In the heart of China’s industrial landscape, electric overhead traveling (EOT) cranes stand as pivotal instruments, revolutionizing the way heavy materials are handled and moved. These sophisticated machines are the backbone of various industries, including manufacturing, construction, power stations, and more, enhancing safety, efficiency, and productivity in every sector they serve.

This in-depth guide delves into the world of EOT cranes in China, exploring their types, specifications, and applications. Readers will gain a comprehensive understanding of the differences between single and double girder cranes, the advantages of each, and how they are tailored to meet specific industrial needs. From the mechanical processing workshops and metallurgical plants to the oil and chemical industries, this guide will outline the diverse roles EOT cranes play and the innovations that have made Chinese domestic cranes competitive with their international counterparts.

You can expect to learn about the technical parameters, safety features, and maintenance requirements of EOT cranes, as well as how they reduce

Electric Overhead Travelling Crane With Hook – Sinokocrane

QD Steel Structure Use Double Girder Overhead Travelling Crane with Electric Hoist: A Comprehensive Guide

Introduction

The QD Steel Structure Use Double Girder Overhead Travelling Crane is a robust and versatile lifting solution designed for various industrial applications, particularly in workshops and manufacturing facilities. This guide provides an in-depth look at its components, specifications, and operational benefits.

Components and Structure

Girder Frame

• The crane is composed of a strong steel girder frame, which provides the structural integrity necessary for lifting heavy loads.
• The double girder design allows for greater stability and higher lifting capacities compared to single girder cranes.

Crane Travel Device

• The crane travel device enables the crane to move along the workshop or factory, allowing for the transportation of loads across different areas.
• This device is typically mounted on rails installed along the building’s structure.

Trolley with Lifting and Moving Device

• The trolley is a crucial component that moves along the girder frame, carrying the lifting mechanism.
• It includes an electric hoist or other lifting devices that handle the actual lifting and lowering of loads.

Specifications

Lifting Capacity

• The QD double girder overhead crane can handle lifting capacities ranging from 5 tons to 800 tons, making it suitable for a wide range of industrial applications[3].

Span

• The span of the crane, which is the distance between the supporting points, can vary from 7 meters to 31 meters, depending on the specific model and installation requirements[3].

Lifting Height

• The lifting height, which is the maximum height the crane can lift loads to, typically ranges from 16 meters to 28 meters. However, some models can offer lifting heights up to 100 meters[3].

Operational Benefits

Safety and Precision

• The double girder design ensures greater stability and precision in lifting and moving heavy loads, reducing the risk of accidents and improving overall safety.
• The crane is manufactured according to stringent standards such as FEM/DIN, ensuring compliance with international safety regulations[3].

Customization and Adaptability

• These cranes can be adapted to fit various building structures and existing installations, offering flexibility in planning and installation.
• Numerous additional options are available to enhance productivity and safety, such as different types of hoists and control systems[1].

Efficiency and Productivity

• The electric hoist and advanced control systems ensure efficient and smooth operation, reducing the time and effort required for material handling.
• The ability to handle long materials and heavy loads makes these cranes ideal for workshops, manufacturing facilities, and other industrial settings[4].

Applications

Workshops and Manufacturing Facilities

• These cranes are widely used in machinery manufacturing, metallurgy, and other heavy industries where heavy loads need to be lifted and moved frequently[3].

Hazardous Environments

• Some models are developed for hazardous working environments and comply with standards such as CQST, CNEx, IECEx, and ATEx, ensuring safe operation in challenging conditions[3].

Material Handling

• The double trolley feature in some models allows for the handling of long materials such as wood, paper tubes, pipes, and bars, making them ideal for specific material handling needs[4].

Maintenance and Support

Local Partners and Certified Installers

• The cranes are often installed and maintained by competent local partners who are certified to ensure high-quality installation and after-sales support[1].

Customized Solutions

• Manufacturers offer customized solutions tailored to the specific needs of the user, ensuring that the crane is optimized for the particular application and environment.

Conclusion

The QD Steel Structure Use Double Girder Overhead Travelling Crane is a powerful and versatile tool for industrial lifting needs. With its robust structure, high lifting capacity, and customizable features, it is an ideal solution for various industrial applications, ensuring safety, efficiency, and productivity.

40 ton electric overhead bridge crane price …

Since the provided URL does not lead to a specific page with detailed content, and given the context of your query, I will create an in-depth guide based on the information available about Crane Co. from the other sources.

Guide to Crane Co.

Overview

Crane Co. is an American industrial products company founded by Richard Teller Crane in 1855. It has evolved from a leading manufacturer of bathroom fixtures to a diverse global conglomerate with a focus on various industrial and technological sectors.

History

• Founded in 1855, Crane Co. initially became prominent for its bathroom fixtures and plumbing supplies.
• By the late 19th century, it was supplying pipe for central heating systems in Chicago’s skyscrapers and enameled cast-iron products for bathrooms.
• In the early 20th century, Crane expanded overseas and became the world’s leading manufacturer of valves and fittings.
• The Crane family sold their control of the company in 1959, leading to its transformation into a global conglomerate with interests in aerospace and other industries.
• The Crane Plumbing unit was sold off in 1990, and the company has since continued to diversify its portfolio[1].

Business Segments

Aerospace & Electronics

• This segment includes the production of aerospace components such as sensing and control systems.
• Crane Aerospace & Electronics operates through various locations including Lynnwood, Washington; Burbank, California; Elyria, Ohio; and Redmond, Washington.
• The segment provides high-precision technologies for major aviation and space markets, including engines, landing gear, satellites, and electronic countermeasure devices[1][4].

Engineered Materials

• This segment is known for its fiberglass reinforced plastic (FRP) products, which have been pioneered since 1954.
• Products include FRP wall and ceiling systems, exteriors of RV sidewalls, and transportation interiors.
• Crane Composites, a part of this segment, operates in locations such as Florence, Kentucky; Goshen, Indiana; and Joliet, Illinois[1][4].

Fluid Handling

• This segment designs and manufactures highly engineered fluid handling equipment including valves, pumps, lined pipe, and instrumentation.
• Products are used in various industries such as refining, oil and gas, pulp and paper, and chemical processing.
• Brands under this segment include CRANE ChemPharma & Energy, Aloyco, Center Line, Compac-Noz, and Krombach[2].

Controls

• This segment focuses on diagnostic, measurement, and control devices.
• It includes solutions for networking, monitoring, and controlling process valves, such as those provided by AVID[2].

Products and Solutions

Valves and Fittings

• Crane supplies a wide range of valves including bronze, cast iron, and cast steel valves, resilient seated butterfly valves, ball valves, gate, globe, and check valves.
• Specialized valves include high-performance butterfly valves, bellows sealed globe valves, aseptic and industrial diaphragm valves, and multi/quarter-turn valves[2].

Pumps and Lined Pipe

• The company offers air operated diaphragm and peristaltic pumps.
• ROTOmax™ Roto-lined Products provide large diameter plastic-lined pipe and fittings suitable for corrosive and erosion applications[2].

Aerospace Components

• Crane Aerospace & Electronics provides sensing and control systems, as well as other high-precision technologies for the aerospace and defense industries.
• Products include components for engines, landing gear, satellites, and electronic countermeasure devices[1][4].

Engineered Materials

• Crane Composites offers FRP products for industrial and commercial applications, including wall and ceiling systems and transportation interiors[1][4].

Industries Served

Crane Co. serves a variety of industries, including:
– Chemical industries
– Commercial construction
– Food and beverage
– General and commercial aviation
– Power generation
– Refining and oil and gas
– Pulp and paper
– Pharmaceutical processes[1][2].

Innovation and Culture

• Crane Co. is driven by a commitment to innovation, quality, and reliability.
• The company emphasizes proprietary and differentiated technology, deep vertical expertise, and responsiveness to unique customer needs.
• Crane PSE (Philanthropy, Sustainability, and Equality) is an initiative aimed at making a global impact through community outreach, environmentally conscious manufacturing, and a diverse workforce[4].

Recent Developments

• In 2017, Crane Co. acquired Crane Currency, which was later spun off in 2023 to form Crane NXT.
• The company continues to refine its approach to innovation and new product development, maintaining its legacy of engineering excellence and customer satisfaction[1].

Electric Hoist Overhead Traveling Crane Suppliers …

Guide to Electric Overhead Traveling (EOT) Cranes and Electric Hoists

Introduction

Electric Overhead Traveling (EOT) cranes are industrial machines designed to handle the movement of heavy loads within various environments such as construction sites, production halls, assembly lines, and storage areas. These cranes are distinguished by their ability to move loads both vertically and horizontally.

Components of EOT Cranes

Bridge

The bridge is the principal structural component of an EOT crane, spanning the width of the building and comprising one or more load-bearing beams or girders. These girders can be fabricated steel box-girders or rolled-steel joists and carry the hoist trolley along their length during operation.

Runway and Runway Rail

The runway is the track and support system on which the crane operates, often considered part of the building structure. The runway rail is supported by the runway beams and is the path along which the crane travels.

End Trucks

Located on either side of the bridge, end trucks house the wheels that allow the entire crane to move. These trucks consist of structural members, wheels, bearings, axles, and electric drive motors that power the movement.

Hoist

The hoist mechanism is a critical component mounted to the trolley. It consists of a motor drive, coupling, brakes, gearing, drum, ropes, and a load block designed to raise, hold, and lower the maximum rated load.

Trolley

The trolley allows the hoist to be positioned directly above the material for placement. It moves horizontally along the bridge girder, enabling precise positioning of the load.

Controls

Controls for EOT cranes are typically mounted in an operator pendant or remote console and include push buttons and switches that operate relays and contactors. Variable frequency inverters provide speed control for accurate positioning.

Types of EOT Cranes

Single Girder Cranes

• These cranes consist of a single bridge girder supported on two end trucks.
• The trolley hoist mechanism runs on the bottom flange of the bridge girder.
• Suitable for lighter loads and applications where space is limited.

Double Girder Bridge Cranes

• These cranes consist of two bridge girders supported on two end trucks.
• The trolley runs on rails on the top of the bridge girders.
• Capable of lifting heavier loads and often used where high hook lift is required.

Under Running (Under Slung) Cranes

• Supported from the roof structure, these cranes run on the bottom flange of the runway girders.
• Typically used for lighter loads and in spaces with limited headroom.

Motions of EOT Cranes

Hoisting Motion

• The hoist raises and lowers the material, providing vertical movement.

Cross Travel

• The trolley moves the hoist laterally along the bridge girder, allowing horizontal positioning.

Long Travel

• The entire crane moves along the runway, enabling longitudinal movement within the working area.

Electrical Requirements

Voltage and Power

• EOT cranes typically operate on 480 volts, 3-phase, 60 hertz for US requirements.
• The circuit voltage should not exceed 600 volts for AC or DC current.
• Runway power is usually provided by conductor bars, and hoisting trolleys by festoon cables.

Safety Features

Brakes and Limit Switches

• Electrically operated brakes are mounted on the drive motors to prevent uncontrolled loads.
• Electrical limit switches cut power to the drive motors to prevent collisions with the building structure.

Master Contactors

• A master contactor can cut off all power to the crane in dangerous situations.

Special Features and Configurations

Cabs and Walkways

• Some cranes are equipped with closed, glazed, or air-conditioned cabins for operator comfort.
• Full-length platforms on both girders can be provided for maintenance and inspection.

Lighting and Other Equipment

• Under bridge lighting, crane lights, and other special equipment such as magnet cable reels can be installed.

Control Systems

• Pendant controls, remote consoles, and radio remote controls are available to suit different operational needs.

Selection Criteria for EOT Cranes

Specifications and Codes

• Consider applicable specifications, codes, or local regulations.

Crane Capacity

• Determine the required crane capacity based on the weight and type of loads to be handled.

Span and Lift

• Specify the required span and lift height of the hoist.

Duty Cycle

• Evaluate the usage pattern of the crane, whether it will be used infrequently, intermittently, or continuously.

Hook Approach

• Consider the minimum horizontal distance between the outermost extremities of the crane and the centerline of the hook.

Runway System

• Determine the length and configuration of the runway system needed.

Maintenance and Operation

Operator Training

• Ensure operators are trained to use the crane safely and efficiently.

Regular Maintenance

• Perform regular maintenance to ensure all components, including motors, brakes, and electrical systems, are in good working condition.

Safety Inspections

• Conduct periodic safety inspections to identify and address any potential issues before they become hazardous.

By understanding these components, types, and operational aspects of EOT cranes, users can make informed decisions when selecting and operating these critical pieces of industrial equipment.

NEW Electrical Overhead Traveling Crane | Sinokocrane

Guide to Sinokocrane’s Stepless Speed Overhead Traveling Crane

Overview

Sinokocrane’s Stepless Speed Overhead Traveling Crane is designed to offer smooth, durable, and efficient lifting solutions, optimized for various industrial applications. Here is a comprehensive guide to its features, benefits, and technical specifications.

Key Features

Crane System

• The crane is equipped with strong main beams and double end trucks.
• The main girder is produced using automatic hydraulic pressure assembly machines and double-sided automatic submerged arc welding to ensure technical requirements and pre-camber realization.

Drive Mechanism

• The long traveling and trolley systems utilize a three-in-one drive mechanism with variable frequency stepless speed.
• This mechanism includes hardened surface and disc brakes for enhanced durability and control.

Hoist

• The hoist is designed with a work duty classification of A5, ensuring robust and reliable performance.
• The hoisting motor features stepless inverter control for precise and smooth lifting operations.

Gear Box

• The gear box is integrated with the three-in-one drive mechanism, providing variable frequency stepless speed and hardened surfaces for longevity.

Buffer

• The crane is equipped with light-weight, cost-effective buffers that are easy to maintain.
• These buffers can consume up to 40% of the impact kinetic energy during the buffering process.

Wheels

• The wheels are produced using intermediate quenching by top technique machinery, ensuring high quality and durability.

Technical Specifications

General Specifications

• Span: Up to 35 meters
• Lifting Speed: 5/0.38 m/min or customized
• Traveling Speed: 0~40 m/min
• Cross Speed: 0~100 m/min (VVVF)
• Working Class: M3-M6

Safety and Compliance

• Standards: CE, ISO compliant
• Paint and Finish: Anodized aluminum frame painted with 70 µm epoxy powder

Benefits

Efficiency and Productivity

• The stepless speed control allows for smooth and precise movements, enhancing operational efficiency.
• The variable frequency drive mechanism reduces energy consumption and minimizes idle time, leading to better productivity.

Maintenance and Durability

• The crane is designed with durable components that require less maintenance.
• The use of automatic welding and hydraulic pressure assembly ensures a long-lasting and reliable main girder.

Cost-Effectiveness

• The crane helps reduce the overall investment in the plant by optimizing space and reducing the need for additional structural support.
• Lower maintenance costs and energy consumption contribute to a better return on investment.

Safety Features

• The crane is equipped with safety features such as buffers that absorb impact energy, reducing the risk of damage.
• The stepless speed control and precise hoisting mechanism minimize the risk of accidents and ensure safer load handling.

Quality Guarantee and After-Sale Service

Quality Assurance

• Sinokocrane follows a strict and comprehensive quality control system to ensure each crane meets safety, functionality, and aesthetic standards.
• Each crane is inspected by quality control engineers before delivery.

After-Sale Service

• Sinokocrane provides lifelong tracking service for crane equipment.
• During the warranty period, any manufacturing defects are addressed with free repairs or replacement parts.
• The company offers long-term concessional crane spare parts and regular on-site quality inspections and technical support.

Conclusion

Sinokocrane’s Stepless Speed Overhead Traveling Crane is a cutting-edge solution for industrial lifting needs, offering a blend of efficiency, durability, and safety. With its advanced drive mechanisms, durable components, and comprehensive after-sale service, this crane is designed to maximize productivity and minimize maintenance costs, making it an excellent choice for various industrial applications.

Single girder Electric Overhead Travelling Crane

Single Girder Electric Overhead Travelling (EOT) Cranes: A Comprehensive Guide

Introduction

Single girder EOT cranes are a popular choice for various industrial applications due to their versatility, cost-effectiveness, and ease of maintenance. This guide provides an in-depth look at the features, benefits, and conditions under which single girder EOT cranes are used.

Design and Components

• Main Girder: The single girder EOT crane features a single main girder supported by end carriages on either side. This girder serves as the primary load-bearing beam[4][5].
• Trolley and Hoist: The trolley and hoist mechanism are typically mounted on the lower flange of the girder. This design makes the crane compact and efficient[4][5].
• End Carriages: The crane has end carriages that support the main girder and facilitate movement along the runway. These carriages usually have a four-wheel arrangement[1].
• Motors and Gearboxes: Single girder EOT cranes are equipped with mounted motors and vertical gearboxes, which enable smooth operation and efficient power transmission[1].

Features of Single Girder EOT Cranes

Lifting Capacity

• Single girder EOT cranes are capable of lifting loads up to 20 tons, making them suitable for light to medium-duty applications[1][3][4].

Construction and Space Utilization

• These cranes have a compact construction that minimizes the building load and optimizes space utilization. They are ideal for facilities with limited headroom[1][4][5].

Cost-Effectiveness

• Single girder cranes are generally less expensive to acquire and install compared to double girder cranes. They require less material and simpler support structures, resulting in lower overall costs[4][5].

Ease of Maintenance

• Due to their simpler construction, single girder cranes require less maintenance. Maintenance tasks such as inspection, lubrication, and repairs can be carried out more efficiently, minimizing downtime[4][5].

Operational Flexibility

• These cranes can be operated through various control methods, including push-button pendant stations, radio remote control, and in some cases, can be adapted for specific control needs[1][2][4].

Applications and Conditions of Use

Lifting Capacity and Speed

• Single girder EOT cranes are suitable for applications where the lifting capacity is between 1 to 20 tons. They typically have a long travel speed of 200 fpm, a hoisting speed of 10-60 fpm, and a crossing speed of 100 fpm[1][3].

Environmental and Working Conditions

• These cranes are designed for general material handling in various environments such as factories, warehouses, and stockyards. However, they are not recommended for use in combustible or explosive environments without specific modifications[3].

Installation Requirements

• Single girder cranes can be installed on existing building structures or may require additional steel columns and rail support beams if the building cannot support the crane’s load[3].

Benefits of Single Girder EOT Cranes

Cost Savings

• Lower acquisition and installation costs due to the use of less material and simpler support structures[4][5].

Versatility

• Suitable for both indoor and outdoor applications and can be designed to fit various industrial needs[2][4].

Ease of Installation and Maintenance

• Easier installation, service, and maintenance compared to double girder cranes[4][5].

Space Efficiency

• Works well in buildings where headroom is limited, and the lower overall weight can reduce support structure costs[5].

Drawbacks of Single Girder EOT Cranes

Capacity and Span Limitations

• Single girder cranes have limitations in terms of capacity (typically up to 20 tons) and span (usually up to 65 feet). They are not ideal for heavy-duty lifting or applications requiring long spans[5].

Reduced Hook Height

• The hook height is generally lower compared to double girder cranes, which can limit their use in applications requiring higher lifting heights[5].

Special Features

• Adding special features such as walkways and operator cabs is more difficult and costly compared to double girder cranes[5].

Conclusion

Single girder EOT cranes offer a reliable, cost-effective, and versatile solution for light to medium-duty material handling needs. While they have limitations in terms of capacity and span, their ease of maintenance, space efficiency, and lower overall costs make them an attractive option for many industrial applications. By understanding the features, benefits, and conditions under which these cranes are used, businesses can make informed decisions to optimize their material handling operations.

Electric Overhead Traveling Crane Suppliers …

Guide to Electric Overhead Traveling (EOT) Cranes

Introduction

Electric Overhead Traveling (EOT) cranes are essential components in various industrial settings, including production, assembly, logistics, and construction. These cranes are designed to optimize space and time, facilitating the efficient movement of materials.

How EOT Cranes Operate

Basic Components and Operation

• An EOT crane consists of a bridge that spans the width of the workshop, supported by two parallel runway beams.
• The crane operates along these runways, enabling “down-shop” travel and the movement of goods along the shop’s length.
• Electric power is transferred from a stationary source to the moving crane bridge, typically through a Conductor Bar System, or alternatives like Cable Festoons, Cable Chains, or Cable Reels[1][4][5].

Movement and Control

• The energy from the runway conductors powers the crane’s bridge, allowing the hoist trolley to move perpendicularly to the runways.
• This movement positions the hoist directly over the goods for precise handling.
• The hoist lifts and transports the goods, controlled via a push-button pendant, radio remote control, or an operator cabin attached to the crane[1][2][4].

Types of EOT Cranes

Single Girder EOT Cranes

• These cranes feature a single bridge girder supported on two end trucks.
• The trolley hoist mechanism runs on the bottom flange of the bridge girder.
• Single girder cranes are lighter, easier to maintain, and suitable for handling typical to medium objects and materials. They are often operated using a push-button pendant or radio remote control[2][4][5].

Double Girder EOT Cranes

• These cranes have two bridge girders supported on two end trucks.
• The trolley runs on rails on the top of the bridge girders.
• Double girder cranes are more robust, can handle heavier loads, and are suitable for applications requiring high hook lift and specialized equipment like walkways, crane lights, and cabs. They can be operated using a push-button pendant, radio remote control, or an operator cabin[2][4][5].

Critical Components of EOT Cranes

Bridge and Runway

• The bridge is the principal structural component, spanning the width of the building and carrying the hoist trolley.
• The runway is the track and support system on which the crane operates, usually part of the building structure[5].

End Trucks and Wheels

• End trucks are located on either side of the bridge and house the wheels that enable the crane to travel along the runway.
• These trucks include structural members, wheels, bearings, and axles, and are powered by electric drive motors[5].

Hoist Mechanism

• The hoist mechanism consists of a motor drive, coupling, brakes, gearing, drum, ropes, and load block, designed to raise, hold, and lower the maximum rated load.
• The hoist is mounted to the trolley and is crucial for precise load handling[5].

Controls and Safety Features

• Controls are typically mounted in an operator pendant or remote console and include push buttons and switches that operate relays and contactors.
• Safety features such as electrical limit switches, brakes, and variable frequency inverters ensure safe and accurate positioning[1][5].

Advanced Features and Safety Innovations

Sway Control

• Limits the load swing, reducing production delays and downtime, and allowing operators to focus on a safe traveling path[3].

Inching

• Allows operators to move the load in small increments for precise positioning[3].

Microspeed

• Enables operators to preprogram the controls to move the crane at a fraction of the full speed range, enhancing control and safety[3].

Snag Prevention

• Monitors the rope angle and stops crane movement if the hook, sling, or load catches on something, minimizing damage and risk[3].

Target Positioning

• Moves the load to preset target positions within a predefined area, reducing cycle times and enhancing safety[3].

Protected Areas

• Allocates “no-go” zones to limit the crane’s movements to preset working areas, reducing the risk of accidents and equipment collisions[3].

End Positioning

• Allows operators to set the exact destination of a load and manually lower it to complete the movement safely[3].

Applications of EOT Cranes

EOT cranes are widely used in various industries, including:
– Power Plants
– Transport Industry
– Construction Industry
– Petrochemical Industry
– Chemical Industries
– Steel Plants
– Ceramic Industries
– Dairy Industries
– Foundries
– Textile Industry
– Cement Industry[2].

Maintenance and Operation Considerations

Duty Cycle and Usage

• The duty cycle (usage) of the crane is crucial in determining its specifications and maintenance needs[4].

Electrical Requirements

• Specify the circuit voltage, typically not exceeding 600 volts for AC or DC current, with ideal settings such as 480 volts, 3 phase, 60 hertz for US requirements[4].

Regular Maintenance

• Regular maintenance is essential to ensure the crane operates safely and efficiently. This includes checking electrical systems, motors, brakes, and limit switches[5].

Conclusion

Electric Overhead Traveling (EOT) cranes are sophisticated machines that play a critical role in industrial material handling. Understanding their components, types, and advanced safety features is essential for optimizing their use and ensuring safe, efficient operations. Whether you are selecting a new crane or maintaining an existing one, considering the specific needs of your operation will help you maximize the benefits of these powerful machines.

China Eot Crane Suppliers and Manufacturers

Guide to Electric Overhead Traveling (EOT) Cranes

Introduction

Electric Overhead Traveling (EOT) cranes, also known as overhead cranes or bridge cranes, are essential tools in various industries for the efficient and safe handling of heavy loads. These cranes are powered by electricity and are designed to operate within a defined area, making them highly versatile and efficient.

What is an EOT Crane?

An EOT crane consists of a horizontal bridge that spans the width of the crane bay, supported by end trucks that travel along a set of rails fixed on a runway. The bridge carries a trolley that moves horizontally, and the trolley is equipped with a hoist that lifts and lowers the load. This setup allows the crane to cover a large rectangular area, making it ideal for indoor use in factories, warehouses, and construction sites.

Types of EOT Cranes

Single Girder EOT Cranes

• Construction: Single girder EOT cranes have one main bridge girder supported by end trucks. The hoist trolley travels on the bottom flange of the bridge girder.
• Applications: Suitable for lighter loads and more economical. They are often used in light industrial applications due to their compact construction and lower weight limits.
• Features:
• Lifting capacity up to 20 tons.
• Compact construction minimizes building loads.
• Lower total crane cost on components, building, and runway structure.
• Ergonomic design allows for manual long travel (LT) using an electric hoist or motorized chain pulley block[2][4][5].

Double Girder EOT Cranes

• Construction: Double girder EOT cranes have two main bridge girders supported by end trucks. The hoist trolley runs on rails mounted on top of the bridge girders.
• Applications: Ideal for heavier loads and offer greater lifting height. They are robust and sturdy, making them suitable for heavy-duty operations.
• Features:
• Lifting capacity up to 250 tons.
• Cost-effective for handling heavy loads.
• Utilized for high hook lift requirements.
• Made with alloy steel, hardened, precision-cut gears.
• Equipped with foot-mounted hydraulic thruster brakes for the hoist[2][4][5].

Key Components of EOT Cranes

Bridge

• The primary structure that spans the width of the crane bay, supporting the trolley and hoist and moving along the runway.

Runway

• The tracks or rails on which the bridge travels, usually fixed to the building’s structure.

Hoist

• The mechanism that lifts and lowers the load, which can be electric or manual and is mounted on the trolley.

Trolley

• The component that carries the hoist along the bridge, allowing horizontal movement of the hoist.

End Trucks

• The structures that support the bridge girders and house the wheels that travel on the runway.

Control System

• The interface for operating the crane, which can be a pendant control, radio remote control, or an operator cabin[1][3][4].

Applications of EOT Cranes

EOT cranes are widely used across various industries due to their versatility and efficiency.

Manufacturing Plants

• Used for handling raw materials, components, and finished products, ensuring a smooth production flow.

Steel Mills

• Employed for lifting and transporting heavy steel coils, plates, and other products.

Warehouses

• Aid in loading and unloading goods, optimizing storage space, and ensuring quick and efficient logistics operations.

Construction Sites

• Utilized for lifting construction materials and equipment, improving construction efficiency and safety.

Shipyards and Ports

• Vital for handling cargo containers and loading/unloading goods on ships.

Automotive and Aerospace Industries

• Used for assembling vehicles and handling automotive parts, as well as for handling aircraft components and other heavy equipment[1][3][4].

Benefits of EOT Cranes

Increased Efficiency

• Enable quick and precise handling of heavy loads, reducing downtime and increasing productivity.

Enhanced Safety

• Automate the lifting process, minimizing the risk of accidents and injuries associated with manual handling.

Versatility

• Can be customized to suit specific needs, making them suitable for various applications and industries.

Cost-Effective

• While the initial investment might be significant, the long-term benefits of improved efficiency and safety result in cost savings.

Space Utilization

• Make use of the overhead space, freeing up floor space for other operations[1][4][5].

Features of EOT Cranes

Operational Movements

• EOT cranes have three functional movements:
• Crane Hook Up and Down Lifting
• Trolley Lateral Movement
• Crane Long Traveling Longitudinal Motion[2][4][5].

Control and Operation

• Can be operated through a control pendant, radio/IR remote pendant, or an operator cabin attached to the crane itself, ensuring precision and safety.

Safety Features

• Equipped with emergency stop buttons, limit switches, and overload protection to ensure the safety of the operator and the load. They also have built-in safety features such as anti-collision systems to prevent accidents[5].

Maintenance

• Designed to be easy to maintain and have a long service life. They are easy to access and repair, requiring minimal maintenance[5].

Conclusion

EOT cranes are indispensable tools in many industries, offering unparalleled efficiency, safety, and versatility. Understanding the different types, components, and applications of these cranes can help businesses make informed decisions about their material handling needs. Investing in a high-quality EOT crane can significantly enhance operational capabilities and contribute to overall productivity and safety.

European Type Single Girder Electric Overhead Traveling …

European Single Girder Overhead Crane: A Comprehensive Guide

Introduction

European single girder overhead cranes are designed to meet the demands of modern industrial settings, emphasizing efficiency, safety, and durability. These cranes are widely used in various industries for their versatility and advanced features.

Structure and Components

Main Components

• Main Girder: The primary structural element, typically made of a European standard square box structure.
• End Trucks: These are the units that support the main girder and facilitate the crane’s movement along the runway.
• Electric Hoist Trolley: This includes the lifting mechanism, which can be either a wire rope electric hoist or a chain electric hoist.
• Traveling Mechanism: This component allows the crane to move along the runway.
• Electrical Equipment: Includes control systems, motors, and safety devices[1][2][4].

Advantages and Features

Design and Construction

• Lightweight and Compact: These cranes are designed to be light and compact, reducing energy consumption and initial construction costs.
• Low Headroom: Ideal for facilities with limited vertical space, they offer a small size and low wheel pressure.
• Advanced Coating: The steel structure is polished and coated with a two-layer primer and one top-coat, ensuring long-lasting appearance and resistance to rust[1][2].

Performance and Efficiency

• Variable Speed: Many models come with variable speed controls for the hoisting, trolley, and crane traveling, enhancing operational efficiency.
• High Lifting Capacity: Capacities range from 1 ton to 20 tons, with some customized models reaching up to 35 tons[3][4][5].
• Wide Span and Lifting Height: Spans can range from 7.5 meters to 31.5 meters, and lifting heights can go up to 100 meters, depending on the model and configuration[3][5].

Safety and Reliability

• Safety Devices: Equipped with safety features such as crane traveling limit switches, weight overload protection devices, lifting height limit devices, voltage lower protection functions, and phase sequence protection functions.
• High Protection Grade: Electrical parts often have a high protection grade, such as IP54, ensuring reliable operation in various environments[1][2][4].

Applications

Industrial Use

• These cranes are widely used in multiple industries, including manufacturing, maintenance, steel plants, oil industries, plastic plants, cement plants, power plants, mines, food industries, chemical industries, and more[1][2].

Specific Environments

• Suitable for factories, warehouses, yards, and other different occasions for lifting goods.
• Not recommended for use in inflammable, explosive, or corrosive environments[2].

Specifications and Parameters

General Specifications

• Capacity: Ranges from 1 ton to 20 tons, with some models up to 35 tons.
• Span: Typically between 7.5 meters to 31.5 meters.
• Lifting Height: Can range from 6 meters to 100 meters.
• Working Class: Often classified as A3 to A5 under ISO standards[3][4][5].

Electrical and Mechanical Parameters

• Power Supply: Usually 380V 50Hz 3Phase, but can be customized.
• Hoisting Speed: Dual speed options, such as 0.8m/min and 5m/min.
• Trolley and Crane Speed: Often variable, with speeds up to 30m/min.
• Control Method: Can be ground or cab control[4][5].

Customization and Configuration

Top Running and Under Running Cranes

• Top Running Cranes: Ideal for facilities with high ceilings and heavy loads, running on rails mounted on top of the building structure.
• Under Running Cranes: Suitable for facilities with low ceilings, running on rails mounted underneath the building structure[3].

Freestanding Cranes

• Can be installed without the need for existing building structures, providing flexibility in installation[3].

Maintenance and After-Sales Service

Durability and Maintenance

• Designed for long-term use, with some models guaranteed to maintain their appearance and functionality for up to 20 years without significant maintenance[1].

After-Sales Support

• Many manufacturers offer after-sales services, including a 1-year warranty and technical support[2].

Conclusion

European single girder overhead cranes are a robust and efficient solution for various industrial material handling needs. Their advanced design, safety features, and customizable configurations make them a valuable asset in modern manufacturing and maintenance environments. By understanding the structure, advantages, applications, and specifications of these cranes, users can make informed decisions to enhance their operational efficiency and safety.

China overhead travelling crane

Since the provided websites do not include the specific content from the URL https://www.ecer.com/china-overhead-travelling-crane, I will create a comprehensive guide based on the general information about overhead travelling cranes from the other sources.

Guide to Overhead Travelling Cranes in China

Introduction

Overhead travelling cranes, also known as bridge cranes or overhead travelling cranes, are essential pieces of equipment in various industrial settings. They are designed to lift, move, and position heavy loads both horizontally and vertically, making them a cornerstone in material handling operations.

Types of Overhead Cranes

According to Structure

• Single Girder Overhead Crane: These cranes have one girder and are suitable for lighter loads. They are compact, cost-effective, and often used in workshops and warehouses[1][4].
• Double Girder Overhead Crane: These cranes have two girders and are used for heavier loads. They offer more lifting capacity and are commonly used in mechanical processing workshops, metallurgical plants, and power stations[1][4].
• Multi-Girder Overhead Crane: Less common, these cranes are used for very heavy loads and specific industrial applications.
• Double Trolley Overhead Crane: These cranes have two trolleys on a single girder, allowing for more precise load handling.
• Multiple Trolley Overhead Crane: These cranes have multiple trolleys on a single or double girder, enhancing the efficiency of load handling[1].

According to Pick-Up Device

• Hook Overhead Crane: The most common type, using a hook to lift loads.
• Grab Overhead Crane: Equipped with a grab bucket for handling bulk materials.
• Electromagnetic Overhead Crane: Uses an electromagnetic lifter for handling ferrous metals[1].

According to Purpose

• General Overhead Crane: Used in various general industrial applications.
• Steel Mill Crane: Designed for the specific demands of steel mills.
• Explosion-Proof Overhead Crane: Used in hazardous environments where there is a risk of explosion[1].

Specifications and Lifting Capacity

Overhead cranes can be customized to meet various lifting capacities, ranging from 1 ton to 500 tons. Here are some common specifications:
– Lifting Capacity: Ranges from 5 tons to 50 tons and beyond, depending on the type and configuration of the crane[1][4].
– Span: Can be up to 35 meters or more, depending on the design and application[5].
– Lifting Speed: Typically ranges from 5/0.38 m/min and can be customized[5].
– Traveling Speed: Can range from 0 to 40 m/min[5].
– Cross Speed: Can range from 0 to 100 m/min (VVVF)[5].

Advantages of Chinese Overhead Crane Manufacturers

Cost-Effectiveness

Chinese manufacturers offer competitive pricing due to lower labor costs and efficient production processes, making them a cost-effective option for buyers[2][3].

Wide Range of Suppliers and Options

China has a vast pool of overhead crane suppliers, providing buyers with an extensive selection of options in terms of specifications, designs, and features[2][3].

Quality and Innovation

Chinese manufacturers are known for their commitment to quality and continuous innovation in overhead crane technology. They adhere to international standards such as FEM, ISO, and DIN standards[1][3].

Access to Cutting-Edge Technology

China leads in adopting and advancing cutting-edge technology in overhead crane manufacturing, ensuring buyers have access to the latest advancements and innovations[3].

Manufacturing Process

The manufacturing process for overhead cranes involves several stages:
– Design: Using computer-aided design (CAD) software to create detailed designs.
– Fabrication: Using advanced machinery such as robotic welding systems and precision machining tools.
– Assembly: Assembling the crane components.
– Testing: Rigorous testing to ensure the crane meets quality and safety standards[2].

Key Components and Features

Crane System

• Strong main beams and double end trucks ensure stability and durability[5].

Wheel and Travel Mechanism

• Intermediate quenching and advanced machinery ensure the wheels are durable and efficient[5].

Hoist

• Work duty classifications such as A5 ensure the hoist is suitable for heavy-duty operations[5].

Gear Box and Drive Mechanism

• Three-in-one drive mechanisms with variable frequency stepless speed and hardened surface disc brakes enhance efficiency and reliability[5].

Buffer

• Light weight, easy maintenance, and high buffer capacity to absorb impact kinetic energy[5].

Quality Guarantee and After-Sale Service

Reputable Chinese manufacturers like Sinokocrane emphasize a strict quality control system to ensure each crane is safe, functional, and meets user satisfaction. They also provide lifelong tracking service, free repair or replacement of parts during the warranty period, and long-term concessional spare parts[5].

Conclusion

Overhead travelling cranes from Chinese manufacturers offer a combination of cost-effectiveness, high quality, and innovative technology. Whether you are looking for a single girder or double girder crane, or need a crane for a specific industrial application, Chinese manufacturers can provide customized solutions that meet your needs. Ensuring you select a reputable manufacturer and communicate effectively throughout the process is crucial for a successful procurement experience.

Chinese Standard Single Girder Overhead Crane

Chinese Standard Single Girder Overhead Crane Guide

Overview

A Chinese Standard Single Girder Overhead Crane is a versatile and widely used lifting solution in various industrial settings. Here is a comprehensive guide to help you understand its components, specifications, and applications.

Components and Structure

Main Girder

• The main girder is the primary structural component, supported on each side by end trucks. It can be either a universal design or a box-type girder design, depending on the application and load requirements[3].

End Trucks

• These are the wheeled carriages that support the main girder and allow the crane to move along the runway beams.

Electric Hoist

• The electric hoist, which can be either an electric wire rope hoist or an electric chain hoist, is typically underhung, meaning it runs on the bottom flange of the single girder. This design simplifies the hoist and trolley system and reduces costs[3].

Trolley and Hoist Mechanism

• The trolley carries the hoist and moves along the main girder, allowing for lateral movement of the load. The hoist mechanism includes the lifting motor, wire rope or chain, and the hook with a safety lock[3].

Specifications

Capacity

• Single girder overhead cranes typically have capacities ranging from 0.5 tons to 32 tons, although common models include 1 ton, 2 tons, 5 tons, 10 tons, and 20 tons[1][3][4].

Span

• The span of the crane, which is the distance between the two end trucks, can vary from 6 meters to 31.5 meters. Some models can have spans up to 28.5 meters or more depending on the design[1][3][4].

Lifting Height

• The lifting height can range from 3 meters to 60 meters, with common heights including 6 meters, 9 meters, 12 meters, 18 meters, 24 meters, and 30 meters[1][3][4].

Lifting Speed

• Lifting speeds vary but are typically in the range of 0.8 to 8 meters per minute, with some models offering dual speeds (e.g., 0.8/8 m/min)[1][3][4].

Trolley and Crane Speed

• Trolley speeds and crane traveling speeds are usually around 20 meters per minute, with some models offering speeds up to 30 meters per minute[1][3][4].

Work Duty

• The work duty classification ranges from A3 to A6, depending on the frequency and intensity of use. For example, A3 is for light to medium duty, while A6 is for heavy-duty applications[1][3].

Control and Electrical Systems

Control Methods

• Cranes can be controlled using remote control or pendant control, offering flexibility and safety in operation[3].

Electrical Parts

• Electrical components such as motors, control systems, and other electrical parts are often from reputable brands like CHINT or Schneider[3].

Motors

• Motors used in these cranes are typically from reliable manufacturers such as China Nanjing brand[3].

Applications

Industrial Settings

• Single girder overhead cranes are widely used in various industries including manufacturing, maintenance, pre-engineered steel buildings, steel plants, oil industry, plastic plants, cement plants, power plants, mines, food industry, chemical industry, cable plants, machine tool factories, car/truck industries, transport companies, construction companies, electrical companies, and shipyards[3].

Benefits

• These cranes are preferred due to their:
• Reduction in freight expenses
• Faster installation
• Simpler hoist and trolley design
• Lighter runway beams, which reduce overall costs[3].

Installation and Maintenance

Installation

• The installation process is generally faster and simpler compared to double girder cranes due to the lighter and more straightforward design of single girder cranes[3].

Maintenance

• Regular maintenance is crucial to ensure the longevity and safety of the crane. This includes checking electrical systems, lubricating moving parts, and inspecting the hoist and trolley mechanisms[3].

Safety Features

Hook Safety Lock

• The hook is equipped with a safety lock to prevent accidental load drops[3].

Overload Protection

• Many modern single girder cranes come with overload protection systems to prevent lifting loads beyond the crane’s capacity[3].

Conclusion

Chinese Standard Single Girder Overhead Cranes are robust, versatile, and cost-effective solutions for a wide range of industrial lifting needs. Understanding their components, specifications, and applications can help in selecting the right crane for your specific requirements. Always ensure proper installation, maintenance, and adherence to safety protocols to maximize the crane’s efficiency and lifespan.

Frequently Asked Questions (FAQs)

What are the primary uses and applications of electric overhead traveling cranes in China?

Electric overhead traveling cranes are widely used in various industrial settings in China, including warehouses, factories, open stock yards, workshops, and essential ports. These cranes are crucial for improving work efficiency and loading conditions. They are particularly suitable for medium to large-scale projects that require the lifting and moving of heavy goods. Their versatility and reliability make them an essential piece of equipment in modern industrial operations.

What are the key parameters and specifications to consider when selecting an electric overhead traveling crane?

When selecting an electric overhead traveling crane, several key parameters need to be considered. These include the lifting capacity, which is the maximum weight the crane can lift, typically measured in tons (t) or kilograms (kg). Other important specifications include the span length, which is the horizontal distance between the centerlines of the crane’s main girder running tracks; the lifting height, which is the distance from the ground to the highest lifting position; and the lifting speed, which is the vertical displacement speed of the rated load. Additionally, the crane traveling speed, trolley traveling speed, and working class (which indicates the frequency of use and load size) are critical factors to evaluate.

How do electric overhead traveling cranes ensure safety and compliance with regulations?

Electric overhead traveling cranes in China are designed and manufactured with numerous safety features to ensure compliance with international and local regulations. These cranes are equipped with overtravel limit switches, guards for live electrical parts, and enclosures to protect against dirt, grease, oil, and moisture. The electrical equipment is designed to prevent accidental contact with live parts, and features such as undervoltage trips and emergency stop buttons are included. Regular inspections and maintenance schedules are also essential to ensure ongoing compliance with safety standards set by bodies like OSHA and ISO.

What maintenance and testing procedures are necessary for electric overhead traveling cranes?

To ensure the proper functionality and longevity of electric overhead traveling cranes, rigorous maintenance and testing procedures are mandatory. After assembly and installation, the crane must undergo load testing, endurance testing, and safety feature checks. Regular maintenance includes inspecting critical components such as wire ropes, hooks, and safety devices to identify potential hazards. A maintenance schedule should be established to ensure the crane’s reliable performance and extend its lifespan. Operators and maintenance personnel should also receive proper training on the crane’s operation and maintenance procedures.

Can electric overhead traveling cranes be customized to meet specific user requirements?

Yes, electric overhead traveling cranes can be customized to meet specific user requirements. Manufacturers in China offer customized services where the crane can be designed and manufactured according to the user’s needs. This includes adjusting parameters such as lifting capacity, span length, lifting height, and speed. Custom designs can also incorporate special features like wireless remote control for enhanced safety and efficiency. Additionally, manufacturers can provide special large electric hoist models and other customized components to fit the specific demands of the user’s project.