In the heart of China’s rapid urbanization and industrialization, tower cranes stand as pivotal instruments, transforming skylines and infrastructure with precision and power. At the core of these towering machines is the tower crane jib, a critical component that enables the lifting and placement of heavy materials with unparalleled accuracy and efficiency.

This in-depth guide delves into the world of tower crane jibs in China, exploring their significance in the construction and infrastructure sectors. Readers will gain insights into the various types of tower crane jibs, including hammerhead, luffing, self-erecting, and flat-top cranes, each with its unique advantages and applications. The guide will also discuss the market drivers, such as government initiatives in infrastructure development and the booming construction industry, which are fueling the demand for advanced and reliable tower crane technology.

Additionally, you will learn about the key challenges faced by the industry, including safety concerns, regulatory compliance, and the need for continuous maintenance and technological innovations.

China tower crane jib manufacturers …

Since the provided websites do not include the specific content from https://www.tavolgroup.com/products/tower+crane+jib.html, I will create a comprehensive guide based on general information about tower cranes, particularly focusing on luffing jib tower cranes, using the details from the other sources.

Guide to Luffing Jib Tower Cranes

Introduction

Luffing jib tower cranes are specialized cranes designed for efficient operation in confined spaces, making them ideal for urban construction projects, especially high-rise buildings. Here is an in-depth guide to their features, applications, and operational aspects.

Key Features of Luffing Jib Tower Cranes

Maximum Capacity and Jib Length

• Luffing jib tower cranes can have a maximum capacity ranging from 18 tons to over 60 tons, depending on the model[1][3][5].
• The jib length can extend up to 230 feet (70 meters) or more, allowing for extensive reach over the construction site[2][4][5].

Capacity at Maximum Radius

• The lifting capacity at the maximum jib length is typically lower than the maximum capacity. For example, a crane with an 18-ton maximum capacity might have a jib tip capacity of around 2.15 tons (2.37 USt)[1][4][5].

Operational Mechanisms

• These cranes are equipped with advanced mechanisms such as frequency-controlled drives, which ensure smooth and precise movement of loads[5].
• They often feature automatic reeving change mechanisms, allowing operators to switch between different lifting capacities quickly[5].

Applications of Luffing Jib Tower Cranes

High-Rise Construction

• Luffing jib tower cranes are particularly well-suited for high-rise building construction due to their ability to operate in tight spaces and lift heavy loads to great heights[1][5].

Infrastructure and Port Projects

• These cranes are also used in infrastructure projects and port construction, where their precision and lifting capabilities are invaluable[1][2].

Energy Related Projects

• They can be used in energy-related projects, such as the construction of wind farms or power plants, where heavy and precise lifting is required[1].

Components and Setup of Luffing Jib Tower Cranes

Base and Stability

• The crane is typically set up on a concrete pad, which ensures stability. The pad can be up to 30 feet by 30 feet and 4 feet deep, weighing up to 400,000 pounds[2].

Mast Sections

• The main tower sections are known as mast sections, which can be added or removed as the construction project progresses. This is often done using a jacking system to increase the crane’s height[2].

Slewing Bearing Ring

• A slewing bearing ring at the top of the crane allows it to rotate 360 degrees, providing full coverage of the construction site[2].

Jib Section

• The jib section extends from the top of the crane and can be adjusted to different lengths. It is the part of the crane that lifts and moves loads[2].

Counterweights

• Concrete slabs are commonly used as counterweights to balance the crane and ensure stable operation[2].

Safety Features

Load Moment Indicators (LMI)

• Most tower cranes, including luffing jib cranes, come equipped with load moment indicators (LMI) that prevent overloading and ensure safe operation within specified limits[2].

Anti-Collision Systems

• Advanced safety features include anti-collision systems that prevent the crane from moving into unsafe positions or colliding with other structures[1][5].

Electronic Overload Protection

• These cranes often feature electronic overload protection systems that monitor the load and prevent it from exceeding the maximum load rating[3][5].

Operational Considerations

Operator Access

• Operators typically access the crane’s cab by climbing the mast or using an elevator attached to the mast sections[2].

Climbing Systems

• Internal and external climbing systems allow the crane to be raised as the building height increases, ensuring the crane remains effective throughout the construction process[2][3].

Conclusion

Luffing jib tower cranes are versatile and powerful tools in modern construction, particularly in urban environments. Their ability to operate in tight spaces, lift heavy loads, and adjust to changing project needs makes them an essential component of many construction projects. Understanding their features, applications, and operational aspects is crucial for effective and safe use.

12t Flat Top Tower Crane With 65m Jib

Since the specific website you mentioned is not accessible in the search results, I will create a comprehensive guide to flat-top tower cranes based on the information from similar sources.

Flat Top Tower Cranes: A Comprehensive Guide

Introduction

Flat-top tower cranes are a type of tower crane characterized by their compact head and the absence of a tower top or pendant lines. This design makes them highly efficient, safe, and versatile for various construction projects.

Key Features of Flat Top Tower Cranes

Compact Head Design

• The compact head design eliminates the need for pendant lines, making the assembly and operation of the crane simpler and safer. This design also allows multiple cranes to work closely together on constricted sites without interference[2][5].

Modular and Versatile

• Flat-top tower cranes often feature a modular design, allowing various configurations to suit different project needs. Components such as jib and counter-jib sections can be shared among different models, optimizing rental fleets and reducing costs[2][3].

High-Quality Materials

• These cranes are built with high-quality, long-lasting materials, ensuring a long useful life and minimal maintenance requirements[2].

Advanced Control Systems

• Modern flat-top tower cranes come equipped with advanced control systems, including PLC controls, automatic fault diagnosis, and safety alarms. These systems enhance operational safety and efficiency[4].

Ergonomic Operator Cabs

• The operator cabs are designed for comfort and safety, featuring ergonomic controls, anti-glare displays, and optimal views of the work area. This reduces operator fatigue and improves job site safety[1][3].

Specifications and Capabilities

Maximum Capacity and Jib Length

• Flat-top tower cranes can have a wide range of maximum capacities and jib lengths. For example:
• The Terex CTT 231-12 has a maximum capacity of 12 t (13.2 USt) and a maximum jib length of 70 m (230 ft)[1].
• The Comansa 3000 Series can have maximum loads of 70,550 to 198,410 lb and reaches of 196.9 to 262.5 ft[2].
• The Comedil CTT 721-40 has a maximum lift capacity of 40 metric tons (44.1 U.S. tons) and a jib length reaching up to 84 m (275.6 ft)[3].

Capacity at Maximum Radius

• The lifting capacity at the maximum radius varies by model. For instance, the Terex CTT 231-12 can lift 2.1 t (2.3 USt) at its maximum radius[1].

Height and Free Standing Capabilities

• These cranes can achieve significant free-standing heights and can be anchored for higher reaches. For example, the Comedil CTT 721-40 can have a hook height with a horizontal jib of up to 84 m (275.6 ft)[3].

Applications

High-Rise Construction

• Flat-top tower cranes are commonly used in high-rise construction due to their ability to reach high elevations and handle heavy loads efficiently[1][2].

Infrastructure Projects

• These cranes are also used in infrastructure projects such as bridge construction, road development, and other large-scale civil engineering works[1][2].

Mining and Energy Projects

• Their versatility and capacity make them suitable for mining and energy-related projects, where heavy lifting and precise placement are required[1].

Safety and Efficiency Features

PowerLift and Load-Plus Systems

• Some models come with systems like PowerLift (Comansa) or Load-Plus (Liebherr), which can increase the load chart by up to 10% or 20%, respectively, without exceeding the rated load[2][5].

Anti-Collision Systems

• Advanced safety features include anti-collision systems that prevent cranes from colliding with each other or other structures on the site[1].

T-Lift and Other Safety Mechanisms

• Features like T-Lift, which are 2-person lifts, and safety brakes and overload limiters, ensure safe and controlled operations[3].

Maintenance and Erection

Easy Erection and Maintenance

• The strapless design and modular components make the erection and maintenance of flat-top tower cranes easier and more cost-effective. Quick-release connections and lightweight construction methods further simplify these processes[2][5].

Optimized Investment

• The ability to share structural components among different models optimizes investment by reducing the need for multiple sets of parts[2].

Conclusion

Flat-top tower cranes are a crucial tool in modern construction, offering a blend of efficiency, safety, and versatility. Their compact head design, modular configurations, and advanced control systems make them ideal for a wide range of projects, from high-rise construction to infrastructure and energy-related works. Understanding the key features, specifications, and applications of these cranes can help in selecting the right model for specific project needs.

Chinese Manufactured Luffing Jib Tower Crane – YWE

Since the specific website content from https://symcrane.com/product/chinese-manufactured-luffing-jib-tower-crane/ is not provided, I will create a comprehensive guide based on the general information available about luffing jib tower cranes.

Guide to Luffing Jib Tower Cranes

What is a Luffing Jib Tower Crane?

A luffing jib tower crane is a type of tower crane that features a jib that can be raised and lowered vertically, known as “luffing.” This unique feature distinguishes it from conventional tower cranes with fixed jibs.

Key Features of Luffing Jib Tower Cranes

Jib Movement

• The jib of a luffing crane can be raised or lowered using a luffing system consisting of ropes and pulleys, allowing for vertical movement and adjusting the angle of the jib as needed[2][3].

Slewing Radius

• Luffing cranes have a reduced slewing radius compared to traditional tower cranes, making them ideal for operation in crowded and confined spaces without encroaching on neighboring structures[1][2][3].

Advantages of Luffing Jib Tower Cranes

Vertical Lifting in Confined Spaces

• Luffing jib tower cranes are particularly suitable for construction sites with limited horizontal space, such as urban environments with closely situated buildings. The ability to luff the jib vertically allows for efficient operation in tight spaces[1][2][3].

Reduced Slew Radius

• The smaller slewing radius of luffing cranes enhances safety and spatial efficiency, especially in areas where multiple cranes are operating simultaneously[1][2][3].

Precision and Control

• The luffing mechanism provides greater control over load placement, making these cranes ideal for projects requiring precision, such as high-rise construction and steel erection[2].

Higher Hook Heights

• Luffing jib cranes can achieve higher hook heights than other tower crane types due to their vertical jib movement, making them suitable for tall construction projects[2][3].

Disadvantages of Luffing Jib Tower Cranes

Slower Load Handling

• Luffing cranes typically have slower load handling speeds, especially during the luffing process, which can impact productivity on certain projects[2].

Complexity and Maintenance

• The luffing mechanism adds complexity to the crane’s design, leading to potentially higher maintenance requirements and costs[2].

Limited Horizontal Reach

• Luffing cranes may have a limited horizontal reach compared to other tower cranes, which could impact their suitability for projects requiring extensive horizontal reach[2].

Operator Skill

• Operating a luffing jib tower crane requires specialized training and experience due to the unique movement characteristics of the crane[2].

Applications of Luffing Jib Tower Cranes

Urban Construction

• These cranes are highly effective in urban and built-up areas where space is limited and traditional cranes may face operational challenges[1][2][3].

High-Rise Construction

• The ability to achieve higher hook heights and precise load placement makes luffing jib cranes ideal for high-rise construction projects[2][3].

Wind Turbine Installation

• Some luffing jib tower cranes are designed to meet the demands of wind turbine installation, offering the necessary free-standing height and lifting capacity[3].

Safety and Efficiency Features

Built-In Safety Features

• Modern luffing jib tower cranes often come with built-in safety features such as anti-collision systems, zoning systems, and CCTV cameras to ensure safe operation[3].

Load Measurement System

• These cranes are equipped with load measurement systems that enable high hoisting speeds with light loads and provide overspeed protection[3].

Ergonomic Operator Cab

• The operator cabs are designed to be ergonomic with climate controls and easy-to-read display panels, enhancing operator comfort and control[3].

Maintenance and Durability

Long-Lasting Parts

• High-quality, long-lasting parts sourced from premium manufacturers ensure a long working life for the crane[3].

Smart Designs

• Smart designs facilitate easier erection, disassembly, and transportation of the crane compared to standard tower cranes[3].

Conclusion

Luffing jib tower cranes offer a unique set of advantages that make them invaluable in construction projects, especially in urban and confined spaces. Their ability to luff the jib vertically, reduced slewing radius, and higher hook heights provide significant benefits in terms of safety, efficiency, and precision. While they have some disadvantages, such as slower load handling and higher maintenance requirements, these cranes are a crucial tool for many construction projects.

Topkit Tower Crane

Dahan Technology Co., Ltd.: A Comprehensive Guide to Their Tower Cranes and Construction Hoists

Company Overview

Dahan Technology Co., Ltd. is a prominent manufacturer of tower cranes and construction hoists, established with a commitment to professionalism and innovation in the construction machinery industry. The company has manufactured and sold over 50,000 sets of tower cranes and construction hoists, with products exported to more than 50 countries and regions.

Product Range

Main Series and Models

Dahan Technology Co., Ltd. offers four main series of products, including:
– Top-kit Tower Cranes
– Flat-top Tower Cranes
– Luffing Jib Tower Cranes
– Construction Hoists

These series encompass over 60 models, each designed to meet specific construction needs and equipped with ISO, CE, and other international certificates.

Manufacturing and Quality Control

Advanced Manufacturing Facilities

The company boasts state-of-the-art manufacturing facilities, including:
– Welding Robots: Dahan was the first in China to introduce welding robots to the tower crane industry, currently operating over 100 sets.
– Shot Blasting and Paint Spraying Lines: They own the most advanced shot blasting and paint spraying lines globally, with 12 lines in operation.
– CNC Equipment: Utilizing CNC plasma panel cutting machines, CNC profile sawing machines, CNC drilling machines, lathes, and milling machines to ensure high precision and quality.

Material Testing and Quality Assurance

All raw materials are sourced from reputable companies such as Baosteel, Schneider, and others. These materials undergo rigorous testing, including appearance testing, tensile testing, and other serial tests. The welding process uses 80% argon and 20% carbon dioxide to enhance stability and quality.

Pre-Delivery Testing

Each main welding part of the machine undergoes flaw detection, paint film thickness detection, salt spray corrosion resistance tests, electronic system tests, and complete machine debugging before delivery to ensure safety and reliability.

Research and Development

R&D Team and Patents

Dahan Technology Co., Ltd. employs an intelligent and innovative R&D staff of approximately 100 people. The company holds 28 national patents and has participated in the revision of the Chinese national tower crane standard (GB13752).

Workforce and Expertise

Skilled Workforce

The company proudly employs 2,300 skilled, talented, and dedicated workers. This workforce is crucial in maintaining the high standards of production and innovation.

Market Presence and Export

Global Reach

Dahan Technology Co., Ltd. has established a strong global presence, with products exported to over 50 countries and regions. This widespread export underscores the company’s commitment to providing high-quality products internationally.

Transformation and Service Commitment

From Product Supplier to Value-Added Service Provider

Dahan Technology Co., Ltd. is transforming from a mere product supplier to a value-added service provider. The company is dedicated to creating the top Chinese brand of tower cranes and becoming a globally competitive and specialized tower crane manufacturer.

Conclusion

Dahan Technology Co., Ltd. stands as a leader in the manufacture of tower cranes and construction hoists, driven by innovation, quality, and a strong commitment to customer satisfaction. With advanced manufacturing facilities, rigorous quality control measures, and a dedicated R&D team, the company continues to set benchmarks in the construction machinery industry.

Tower Crane Jib Length 65M Made in China

Tower Crane with 65m Jib Length: A Comprehensive Guide

Overview of the Tower Crane

The tower crane in question, model TC6520, is a self-erecting and wall-attached tower crane designed for various construction projects. Here are the key features and specifications:

Key Specifications

• Max. Lifting Load: 10T
• Max. Tip Load: 2.0T
• Jib Length: 65m
• Independent Height: 50m
• Max. Lifting Height: 200m
• Certification: CE, ISO

Main Features

Design and Structure

• The tower crane boasts a long boom and large working coverage, making it suitable for extensive construction sites.
• It features hydraulic rising and a tandem-mounted tower body, which enhances its stability and ease of operation.
• The design emphasizes a simple structure, good applicability, convenient maintainability, and a lower price point.

Applicability

• This crane is ideal for the construction of industrial, commercial, office, and civil buildings with heights below 220m.
• It is particularly useful in service-building scenarios due to its self-erecting and wall-attached functionality.

Technical Mechanisms

Primary Mechanisms

• Trolleying Mechanism: Allows the crane to move the load along the jib.
• Slewing Mechanism: Enables the crane to rotate 360 degrees.
• Hoisting Mechanism: Responsible for lifting and lowering the load.

Customization and Additional Features

Customization Options

• The crane can be customized with additional features such as lights on the jib, monitors, and anemometers, though these come at an extra cost.
• Remote control is not typically recommended due to operator feedback preferring cabin operation for a wider working view.

Warranty and After-Sales Service

Warranty

• The crane comes with a one-year quality warranty, including main electronic parts (excluding consumable parts).
• Consumable spare parts are provided with the whole machine, usually sufficient for one year.

After-Sales Service

• Timely delivery and standby engineers are available to solve any problems.
• Worksites installation guidance and ample spare parts are provided.
• Training for operation and maintenance is included.
• Engineers have over 20 years of experience in tower crane operations.

Packaging and Delivery

Packaging

• The crane is delivered in a nude package.
• Delivery time is approximately 25-30 days.

Safety and Quality Control

Manufacturing Standards

• The crane is manufactured strictly according to ISO 9001 standards.
• All raw materials are carefully checked by specialists.
• The manufacturing process includes 3D design and analysis, ANSYS calculations, and testing to verify the results.
• Robot welding machines and automatic cutting machines are used for precision.
• The painting process includes an anti-corrosion layer and two surface layers after sandblasting.

Installation and Maintenance

Installation

• The crane’s design allows for fast and easy assembly.
• Local service teams can assist with erection and dismantling.
• On-site service engineers can be appointed to supervise the project.

Maintenance

• The crane features variable frequency speed regulation for stable and reliable starting and braking.
• Low maintenance rate gear reducers and reliable braking systems are used.
• Steel wire ropes have a long service life and low maintenance costs.

Conclusion

The TC6520 tower crane, with its 65m jib length and 10T max lifting load, is a robust and reliable piece of equipment designed for various construction needs. Its advanced parameters, simple structure, and excellent quality make it an ideal choice for construction units. The comprehensive after-sales service, warranty, and focus on safety and quality control further enhance its value in the construction industry.

China Wholesale Tower Crane Manufacturer & Supplier

Since the specific content from the website https://ihurmo.com/product-category/tower-crane/ is not provided, I will create a comprehensive guide based on the general information about tower cranes gathered from the other sources.

Guide to Tower Cranes

Introduction

Tower cranes are essential pieces of equipment in modern construction, used for lifting and placing heavy loads at significant heights. They are versatile, efficient, and crucial for managing large-scale construction projects.

Basic Mechanics of Tower Cranes

Components

• Base and Mast: The crane is bolted to a solid base, typically a concrete pad or a steel structure, which provides stability. The mast, constructed from steel lattice segments, extends vertically from the base to achieve the required height[4][5].
• Turntable: Located at the top of the mast, the turntable allows the jib (working arm) to rotate 360 degrees, enabling the crane to position loads across the construction site[4][5].
• Jib and Counter Jib: The jib is the horizontal arm that extends from the turntable and carries the load. The counter jib, extending in the opposite direction, balances the crane’s weight distribution and mounts heavy counterweights[4][5].
• Trolley and Hook Block: The trolley moves along the jib, positioning the hook block which functions as a pulley system to lift and lower loads vertically[4][5].

Types of Tower Cranes

Hammerhead Tower Cranes

• Feature a fixed, horizontal jib and a trolley assembly that travels the length of the jib to position the hook.
• Can utilize pendant lines between the jib/counter jib and a tower top assembly or a “flat top” design without these lines[4][5].

Flat Top Tower Cranes

• Useful in situations where multiple cranes swing through the same airspace.
• Lack a tower top or pendant lines, making them more compact[4].

Luffing Jib Tower Cranes

• Designed for high-rise construction where space is limited.
• The jib can be angled upwards or downwards to avoid obstacles and other cranes[3][5].

Self-Erecting Tower Cranes

• Smaller and more mobile, these cranes can erect themselves without the need for additional cranes.
• Often used for smaller construction projects or in confined spaces[5].

Specifications and Capabilities

Lifting Capacities

• Tower cranes can have lifting capacities ranging from a few tons to over 70 tons, depending on the model and configuration.
• For example, the Liebherr 280 EC-H has a maximum lift capacity of 12 to 16 metric tons, while larger models like the Potain MD 1600 can handle up to 70.5 tons[2][5].

Height and Reach

• Maximum lifting heights can exceed 300 meters, and the working radius can reach up to 70 meters or more.
• The jib length can vary significantly, with some cranes having jibs that extend up to 230 feet (70 meters)[1][2][5].

Load Management

• Load management relies on precision and balance, ensured by the crane’s robust lattice structure and counterweights.
• Load moment indicators (LMI) prevent the crane from being overloaded and ensure the load does not extend to an unsafe distance along the jib[4][5].

Safety and Stability

Counterweights

• Heavy counterweights, typically made of reinforced concrete and steel, are mounted on the counter jib to balance the weight of the load being lifted.
• These counterweights are crucial for maintaining the crane’s stability during operations[4][5].

Assembly and Erection

• The components of a tower crane are hauled to the job site and assembled using mobile all-terrain cranes.
• A solid concrete base is essential for securing the crane and ensuring stability[4][5].

Operational Efficiency

Control Systems

• Modern tower cranes are equipped with advanced control systems, including joysticks and computer systems, which enable precise movements and safe lifting.
• Intelligent assistance systems, such as those found in Liebherr’s Tower Crane Litronic, adapt to the personal requirements of the crane driver and site quickly[3][4].

Transport and Setup

• Tower cranes are designed for efficient transport and setup. For example, the Liebherr 280 EC-H has components that can be transported in the order they are assembled, making setup faster and more economical[2].

Applications

Construction Projects

• Tower cranes are used in a variety of construction projects, including civil construction, industrial and plant construction, and high-rise building projects.
• They are particularly useful for lifting concrete, steel beams, and other building materials to significant heights[1][3][5].

Long-Term Use

• Some tower cranes, like those in the Liebherr HC series, are designed for very high hook heights and large radii, making them suitable for long-term use in applications such as mines or shipyards[3].

By understanding these components, types, specifications, and operational aspects of tower cranes, users can appreciate their critical role in modern construction and how they efficiently handle heavy lifting tasks.

China Manufacturer of Tower Cranes and Construction …

About Dahan Technology Co., Ltd.

Company Overview

Dahan Technology Co., Ltd. is a professional manufacturer of tower cranes and construction hoists, headquartered in Zhangqiu City, Shandong, China. The company has a rich history of manufacturing and selling over 50,000 sets of tower cranes and construction hoists, with exports to more than 50 countries and regions.

Product Range

Dahan Technology offers a diverse range of products, categorized into four main series:
– Top-kit Tower Cranes
– Flat-top Tower Cranes
– Luffing Jib Tower Cranes
– Construction Hoists

These products come with ISO, CE, and other international certifications, ensuring high standards of quality and safety.

Manufacturing and Technology

Advanced Manufacturing Facilities

Dahan Technology is at the forefront of technological innovation in the tower crane industry. Key highlights include:
– Introduction of Welding Robots: The company was the first in China to introduce welding robots in the tower crane industry, currently operating over 100 sets.
– Advanced Shot Blasting and Paint Spraying Lines: Dahan owns the most advanced shot blasting and paint spraying lines globally, with 12 lines in operation.
– High-Precision Cutting Equipment: The company uses CNC plasma panel cutting machines and CNC profile sawing machines, which provide high cutting performance with precision to less than 1mm.
– Welding Quality: Adopting 80% argon and 20% carbon dioxide as welding gas ensures more stable and deeper weld penetration.

Material Quality

Dahan Technology sources materials from renowned companies such as Baosteel, Schneider, and others. All materials undergo rigorous testing, including appearance testing, tensile testing, and other serial tests to ensure superior quality.

Research and Development

The company boasts an intelligent and innovative R&D staff of approximately 100 people. This team has contributed significantly to the industry:
– National Patents: Dahan holds 28 national patents.
– Industry Standards: The company has participated in the revision of the Chinese national tower crane standard (GB13752).

Workforce and Operations

Dahan Technology employs 2,300 skilled, talented, and dedicated workers. The company’s operations are supported by a wide range of processing equipment, including CNC plasma cutters, CNC drilling machines, lathes, milling machines, and sawing machines.

Quality Control and Testing

Before products leave the factory, they undergo a stringent testing process:
– Flaw Detection
– Paint Film Thickness Detection
– Salt Spray Corrosion Resistance Test
– Electronic System Test
– Complete Machine Debugging

This comprehensive testing ensures that the products delivered to clients are safe and reliable.

Global Presence and Service

Dahan Technology is committed to transforming from a product supplier to a value-added service provider. The company aims to create the top Chinese brand of tower cranes and become a globally competitive and specialized tower crane manufacturer.

Contact Information

For those interested in collaborating or purchasing products, Dahan Technology can be reached at:
– Address: NO.1502 Shanquan Road, Zhangqiu City, Shandong, China 250200
– Bank Details: Bank of China, Shandong Branch, Zhangqiu SUB Branch
– Account NO.: 210405574655
– Swift Code: BKCHCNBJ500

This information highlights Dahan Technology’s commitment to quality, innovation, and customer service, making it a reliable choice for tower cranes and construction hoists globally.

Hot sale china brand self erecting construction lift …

Guide to Self-Erecting Tower Cranes

Introduction

Self-erecting tower cranes are a versatile and efficient type of crane designed for rapid transportation, erection, and operation on various construction sites. Here is a comprehensive guide to their features, benefits, and applications.

Key Features of Self-Erecting Tower Cranes

Design and Portability

• Self-erecting tower cranes are designed to fold up into multiple sections for easy transportation, typically fitting the size of a semi-trailer[2][3][4].
• They can be transported on their own mounted highway axles or via flatbed transport.

Setup and Erection

• These cranes can be erected and dismantled quickly without the need for external cranes or assistance. The process usually takes between 15 to 30 minutes[1][3][4].
• They use jacks to insert sections at ground level or lift into place by a partially erect crane.

Operational Capabilities

• Self-erecting tower cranes have jib radii ranging from 80 to 160 feet and hook heights from 55 to 120 feet. They can handle tip loads between 1,000 and 3,000 pounds and maximum loads from 2,000 to 11,000 pounds[1][3][5].

Benefits of Using Self-Erecting Tower Cranes

Improved Efficiency and Productivity

• These cranes can significantly reduce manual labor needs by performing the jobs of several pieces of heavy equipment at once. They are especially useful for installing prefabricated components and handling materials efficiently[2][4].
• They can be operated by a single crew member, reducing the need for additional personnel[4].

Cost and Time Savings

• Self-erecting tower cranes save time and labor by minimizing the need for specialized equipment like telehandlers, mobile cranes, and all-terrain forklifts. This reduces overall project costs and enhances jobsite efficiency[1][2][4].
• Contractors can build projects up to 50% faster using these cranes, particularly in residential and commercial construction[2].

Environmental and Safety Benefits

• Many self-erecting tower cranes operate on electricity, which means they emit no noise or exhaust fumes, making them environmentally friendly and improving team communication on the jobsite[1][2][4].
• They reduce the need for manual tasks, thereby improving job site safety and reducing the possibility of worker’s comp claims[4].

Applications and Uses

Masonry and Wall Construction

• Self-erecting tower cranes are ideal for lifting masonry blocks and prefabricated walls, especially in sites with limited access. They can efficiently set and stabilize floor joists and wall sections[2][4].

Multi-Storied Construction

• These cranes are adjustable to various heights and jib configurations, making them suitable for multi-storied buildings. They can cover the entire site from one location, reducing the need for multiple equipment moves[2][4].

General Material Handling

• They are used for placing jobsite materials such as lumber, engineered floor joists, trusses, and roof rafters. They can also handle tasks like hoisting, positioning, and setting trusses and roof rafters[1][4].

Operational Considerations

Footprint and Accessibility

• Self-erecting tower cranes have a minimal footprint, typically between a 10×10 foot to 14×14 foot area, making them suitable for tight-boundaried jobsites and impassable terrain[1][2][4].

Control and Precision

• Many models come with wireless remote control, hydraulic outriggers, and integrated counterweights, enabling quick self-erection and precise control over the crane’s movements[2][3].

Conclusion

Self-erecting tower cranes offer a range of benefits that make them an invaluable asset on construction sites. Their ease of transportation, rapid setup, and versatile operational capabilities make them a cost-effective and efficient choice for various construction projects. By reducing manual labor, minimizing equipment needs, and enhancing safety and environmental sustainability, self-erecting tower cranes are a significant advancement in construction technology.

China Luffing tower crane manufacturers …

Since the specific website you mentioned is not accessible in the search results provided, I will create a comprehensive guide to luffing jib tower cranes based on the information from the other sources.

Guide to Luffing Jib Tower Cranes

What is a Luffing Jib Tower Crane?

Luffing jib tower cranes are a type of tower crane that distinguishes itself from conventional tower cranes through its ability to raise or lower the jib vertically. This feature is made possible by a luffing system, which includes ropes and pulleys that allow the crane operator to adjust the angle of the jib as needed[2].

Key Features of Luffing Jib Tower Cranes

Smart Designs and Easy Transport

Luffing jib cranes are designed with smart, modular architectures that facilitate easy erection, disassembly, and transportation. This makes them highly versatile and convenient for various construction sites[1][3].

Ergonomic Operator Cab

These cranes come equipped with ergonomic operator cabs that include climate controls, easy-to-read display panels, and stepless motor operation of the trolley and hoist. This allows operators to control the load with greater precision and comfort[1][3].

Long-Lasting Parts

Luffing jib cranes are built with high-quality, long-lasting parts sourced from premium manufacturers. This ensures the crane can withstand heavy workloads over an extended period[1][3].

Load Measurement System and Safety Features

These cranes often include a load measurement system that enables high hoisting speeds with light loads and an empty hook. They also feature built-in safety mechanisms such as overspeed protection, anti-collision systems, and the option to install CCTV cameras[1][3].

Different Foundation Configurations

Luffing jib cranes can be adapted to various foundation configurations, making them suitable for different job sites, including those with limited space or specific access requirements[1].

Advantages of Luffing Jib Tower Cranes

Vertical Lifting in Confined Spaces

One of the primary advantages of luffing jib cranes is their ability to operate in confined spaces. They can lift loads vertically, making them ideal for urban construction sites where horizontal space is limited[2][3].

Reduced Slew Radius

Luffing cranes have a smaller slew radius compared to traditional tower cranes, allowing them to operate efficiently in crowded areas without encroaching on neighboring structures[1][2].

Precision and Control

The luffing mechanism provides greater control over load placement, making these cranes ideal for projects requiring precision, such as high-rise construction and steel erection[2].

Higher Hook Heights

Luffing jib cranes can achieve higher hook heights than other types of tower cranes due to their vertical jib movement, making them suitable for tall construction projects[2].

Enhanced Safety

These cranes keep the jib and load within the construction site’s limits, ensuring public safety and compliance with local regulations that prohibit cranes from flying over surrounding spaces[3].

Disadvantages of Luffing Jib Tower Cranes

Slower Load Handling

Luffing cranes typically have slower load handling speeds, especially during the luffing process, which can impact productivity on certain projects[2].

Complexity and Maintenance

The luffing mechanism adds complexity to the crane’s design, leading to potentially higher maintenance requirements and costs[2].

Limited Horizontal Reach

Luffing cranes may have a limited horizontal reach compared to other tower cranes, which could impact their suitability for projects requiring extensive horizontal reach[2].

Operator Skill

Operating a luffing jib tower crane requires specialized training and experience due to the unique movement characteristics of the crane[2].

Applications of Luffing Jib Tower Cranes

Urban Construction

Luffing jib cranes are particularly useful in urban environments where space is limited and precision is crucial. They can operate efficiently in tight spaces and avoid obstacles such as surrounding buildings or power lines[1][2][3].

High-Rise Construction

These cranes are ideal for high-rise construction projects due to their ability to achieve higher hook heights and provide precise load placement[2].

Wind Turbine Installation

Innovations in luffing jib cranes have made them suitable for wind turbine installation, where elevated hook heights are necessary[1].

Auxiliary Cranes

Luffing jib cranes can be used as auxiliary cranes to primary tower cranes, increasing material handling cycles and minimizing construction time[3].

Conclusion

Luffing jib tower cranes offer a unique set of advantages that make them invaluable in various construction scenarios, particularly in urban and high-rise projects. While they have some disadvantages, such as slower load handling and higher maintenance needs, their benefits in terms of precision, safety, and adaptability to confined spaces make them a crucial tool in modern construction. Understanding the features, advantages, and applications of luffing jib tower cranes can help construction companies optimize their operations and ensure safe and efficient project execution.

Longest tower crane jib/boom/arm

Guide to the Longest Tower Crane Jib/Boom/Arm

Introduction

The longest tower crane jib is a significant achievement in the field of construction and engineering, showcasing the advancements in crane design and manufacturing. Here is a detailed guide to this record.

Record Holder

The longest tower crane jib is held by Zoomlion Heavy Industry Science and Technology Co., Ltd., a Chinese company renowned for its innovative construction equipment.

Dimensions and Specifications

• Length: The jib measures 110.68 meters (363 feet 1.47 inches) in length[1][4][5].
• Manufacturer: Built by Zoomlion Heavy Industry Science and Technology Co., Ltd.
• Location: Measured in Changde, Hunan, China.

Date of Achievement

The record was set on August 28, 2012.

Significance of the Record

This record highlights the engineering capabilities and technological advancements in the construction industry. A jib of this length allows for greater reach and versatility in construction projects, enabling the lifting and placement of heavy loads over long distances.

Comparison with Standard Cranes

Typical large tower cranes have jibs that are significantly shorter, usually around 60-80 meters. The record-breaking jib is nearly twice as long, demonstrating a substantial increase in operational range and capacity.

Operational Capabilities

While the specific lifting capacity of this record-breaking jib is not detailed, it is part of a larger tower crane system designed to handle heavy loads. The ability to extend the jib to such lengths enhances the crane’s overall efficiency and effectiveness in large-scale construction projects.

Future Developments

The achievement by Zoomlion in 2012 has paved the way for further innovations. Recently, Zoomlion has also developed a 22,000 ton-meter-class super-large tower crane, which is the largest in the world in terms of lifting torque, further pushing the boundaries of what is possible in construction equipment[3].

Conclusion

The longest tower crane jib, measuring 110.68 meters, is a testament to the continuous innovation and technological advancements in the construction industry. This record showcases the capabilities of modern engineering and the potential for even more impressive achievements in the future.

Frequently Asked Questions (FAQs)

1. What are the main components of a tower crane jib and their functions?

The jib of a tower crane is a critical component that extends horizontally from the top of the mast, allowing the crane to reach different areas of the construction site. The jib carries the lifting mechanism, which includes the trolley and hook. The trolley mechanism moves along the jib, enabling precise positioning of the load. The jib’s length can vary, with longer jibs providing greater reach and flexibility. It is responsible for carrying the load and transporting it from one location to another, making it essential for the crane’s mobility and flexibility.

2. How does the jib of a luffing jib tower crane differ from other types of tower cranes?

The jib of a luffing jib tower crane is distinct because it can be raised or lowered to adjust the reach of the crane. This feature allows the crane to operate effectively in very congested sites where there are buildings, other cranes, or space limitations. Unlike hammerhead cranes with fixed horizontal jibs, luffing jib cranes can reduce their turning radius by adjusting the jib’s angle, making them ideal for projects with variable heights or obstacles.

3. What factors should be considered when choosing the appropriate jib length for a tower crane?

When selecting the appropriate jib length for a tower crane, several factors need to be considered. The working radius, which is the horizontal distance from the root of the tower crane boom to the far end of the boom, is crucial. This radius should be determined according to the diagonal length of the building plan to ensure the crane can cover the entire construction area. Additionally, the type of construction project, the presence of obstacles or surrounding buildings, and the specific lifting requirements all influence the choice of jib length.

4. How is the jib of a tower crane installed and assembled, especially in restricted conditions?

The installation and assembly of a tower crane jib, particularly in restricted conditions, involve several steps. For instance, the QTP flat-head tower crane allows the entire boom to be disassembled and assembled section by section in the air, reducing the requirements for lifting equipment and saving on disassembly and assembly costs. This method is more suitable for tower crane disassembly and assembly under restricted conditions on the construction site. Hydraulic lifting devices can also be used to increase or reduce the standard section of the tower body, adapting the lifting height of the tower crane to changes in building height.

5. What safety features are associated with the operation of a tower crane jib?

The operation of a tower crane jib includes several safety features to ensure stable and reliable lifting operations. Counterweights are used to balance the load being lifted, preventing the crane from tipping over. The crane is also equipped with safety protection devices that are sensitive and reliable, such as load moment indicators and anti-collision systems. Additionally, the driver’s cab is designed to be spacious, comfortable, and safe, with a clear view of the construction site, and it uses a linkage console to control various mechanisms, enhancing operational safety and efficiency.