In the bustling construction landscapes of China, tower cranes stand as towering giants, orchestrating the vertical and horizontal transportation of materials with precision and power. These versatile machines are the backbone of modern construction, particularly in the building of multi-story and high-rise structures. Our in-depth guide delves into the world of tower cranes in China, exploring their history, types, and advanced mechanisms.

Readers will gain a comprehensive understanding of the two primary types of tower cranes: upper rotary and lower rotary, each with its unique features and applications. You will learn about the various operating mechanisms, including lifting, slewing, derricking, and jacking, and how these mechanisms combine to achieve high efficiency and flexibility on construction sites.

From the robust metal structures and sophisticated electrical systems to the innovative hydraulic jacking designs and safety protection devices, this guide will cover every aspect that makes tower cranes indispensable in contemporary construction. Whether you are a seasoned engineer, a construction manager, or simply curious about the

Various Types of Tower Cranes And Construction Hoist–DAHAN

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

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 exporting these products to over 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 different models, each designed to meet various construction needs.

Certifications

All products are certified with ISO, CE, and other relevant certifications, ensuring compliance with international standards.

Manufacturing and Technology

Advanced Manufacturing Facilities

The company is equipped with state-of-the-art manufacturing facilities, including:
– Welding Robots: Dahan Technology was the first in China to introduce welding robots in the tower crane industry, currently operating over 100 sets.
– Shot Blasting and Paint Spraying Lines: The company boasts the most advanced shot blasting and paint spraying lines globally, with 12 lines in operation.
– CNC Machines: Utilizing CNC plasma panel cutting machines and CNC profile sawing machines, which provide high cutting performance with precision to less than 1mm.
– Processing Equipment: Over 1,000 sets of processing equipment such as CNC drilling machines, lathes, and milling machines.

Material Quality

Materials are sourced from reputable companies like Baosteel, Schneider, and others. All raw materials undergo rigorous testing, including appearance testing, tensile testing, and other serial tests to ensure superior quality.

Welding Quality

The use of 80% argon and 20% carbon dioxide as welding gas enhances the stability and quality of the welds, with weld penetration 30% deeper than using carbon dioxide alone.

Quality Control and Testing

Before any product leaves the factory, it undergoes a comprehensive series of tests, including:
– Flaw Detection
– Paint Film Thickness Detection
– Salt Spray Corrosion Resistance Test
– Electronic System Test
– Complete Machine Debugging

These rigorous tests ensure that the products delivered to clients are safe and reliable.

Research and Development

Dahan Technology Co., Ltd. employs an intelligent and innovative R&D staff of approximately 100 people. The company has:
– Participated in the Revision of National Standards: Contributed to the revision of the Chinese national tower crane standard (GB13752).
– National Patents: Holds 28 national patents, reflecting its commitment to innovation.

Workforce and Expertise

The company proudly employs 2,300 skilled, talented, and dedicated workers. This workforce includes a robust R&D team and a large pool of skilled labor, ensuring high-quality products and services.

Global Reach and Export

Dahan Technology Co., Ltd. has exported its products to over 50 countries and regions, establishing itself as a globally competitive and specialized tower crane manufacturer.

Transformation and Service Commitment

The company is transforming from a product supplier to a value-added service provider, committed to creating the top Chinese brand of tower cranes. This includes providing comprehensive after-sales service and technical support to ensure customer satisfaction.

Conclusion

Dahan Technology Co., Ltd. stands as a leader in the manufacturing and export of tower cranes and construction hoists, driven by advanced technology, rigorous quality control, and a strong commitment to innovation and customer service. Their extensive product range, global reach, and dedication to quality make them a reliable choice for construction projects worldwide.

Tower Crane,China Construction Machinery …

Guide to Tower Cranes and Construction Hoists by Dahan Technology Co, Ltd.

Company Overview

Dahan Technology Co, Ltd. is a professional manufacturer of tower cranes and construction hoists, committed to delivering high-quality products and innovative solutions. The company has manufactured and sold over 50,000 sets of tower cranes and construction hoists, exporting to more than 50 countries and regions.

Product Series

Main Product Categories

Dahan Technology Co, Ltd. offers four main series of products:

Top-Kit Tower Cranes

Top-kit tower cranes are designed for versatility and ease of assembly. These cranes are ideal for various construction projects, offering a balance between lifting capacity and height.

Flat-Top Tower Cranes

Flat-top tower cranes, also known as topless tower cranes, are renowned for their ease of assembly and are often used in projects where overhead clearance is a concern, such as near airports or in urban areas.

Luffing Jib Tower Cranes

Luffing jib tower cranes are specialized for constructing tall buildings and are particularly useful in confined spaces. They offer high precision and control, making them ideal for “supertall” skyscrapers.

Construction Hoists

Construction hoists, or construction elevators, are driven by gear-and-rack transmission and are widely used to transport personnel and materials on construction sites.

Manufacturing and Quality Control

Advanced Manufacturing Facilities

Dahan Technology Co, Ltd. employs advanced manufacturing technologies, including:
– Welding Robots: The company was the first in China’s tower crane industry to introduce welding robots, now operating over 100 sets.
– Shot Blasting and Paint Spraying Lines: Equipped with the most advanced lines globally, ensuring superior surface coating and paint quality.
– CNC Processing Equipment: Utilizes CNC plasma cutters, CNC drilling machines, lathes, milling machines, and sawing machines to ensure high precision and interchangeability of materials.

Quality Assurance

Each main welding part of the machine undergoes rigorous testing, including:
– Flaw Detection
– Paint Film Thickness Detection
– Salt Spray Corrosion Resistance Test
– Electronic System Test
– Complete Machine Debugging

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

Materials and Suppliers

Dahan Technology Co, Ltd. sources materials from well-known enterprises such as Baosteel, Anshan Steel, Laiwu Steel, and Wuhan Iron and Steel. All raw materials undergo multiple tests, including appearance testing and tensile testing, to guarantee superior quality.

Certifications and Patents

The company holds ISO, CE, and other certifications, ensuring compliance with international standards. Dahan Technology Co, Ltd. also holds 28 national patents and has participated in the revision of the Chinese national tower crane standard (GB13752).

Workforce and R&D

The company employs 2,300 skilled workers, including an innovative and intelligent R&D staff of approximately 100 people. This strong R&D capability enables the company to continuously innovate and improve its products.

Global Presence

Dahan Technology Co, Ltd. has a significant global presence, with products exported to over 50 countries and regions. The company provides comprehensive support, including online support and overseas service outlets.

Conclusion

Dahan Technology Co, Ltd. stands as a leader in the tower crane and construction hoist industry, offering a wide range of high-quality products backed by advanced manufacturing technologies, rigorous quality control, and a strong commitment to innovation and customer satisfaction. Whether you are looking for top-kit, flat-top, or luffing jib tower cranes, or construction hoists, Dahan Technology Co, Ltd. has the solutions to meet your construction needs.

China Tower cranes manufacturers …

Given that the specific website https://www.tavolgroup.com/products/Tower+cranes.html is not accessible in the search results, the following guide is compiled based on the available information from similar sources about Tavol tower cranes.

Tavol Tower Cranes: An In-Depth Guide

Overview of Tavol Tower Cranes

Tavol tower cranes are manufactured by Shandong Tavol Machinery Co., Ltd., a company with over 30 years of production history and more than 10 years of overseas business experience. Tavol cranes are known for their advanced technical specifications, CE certification, and compliance with international standards.

Key Features and Specifications

Models and Capacities

Tavol offers a wide range of tower crane models with varying capacities to meet different construction needs:
– QTZ5013 Tower Crane:
– Max load: 6 tons
– Tip load: 1.3 tons
– Jib length: 50 meters
– Free standing height: 40 meters[1][4] – QTZ315-7040 Topkit Tower Crane:
– Max load capacity: 18 tons
– Tip load capacity: 4 tons @ 70 meters jib end
– Jib length: 70 meters
– Mast size: 223 meters[3] – Other models include QTZ31.5, QTZ40, QTZ50, QTZ63, and more, each with different load capacities and jib lengths[4].

Technical Specifications

• Hoisting Mechanism:
• Hoisting speed: Varies by model, e.g., 0-40m/min for 3 tons, 0-80m/min for 1.5 tons[1]
• Hoisting motor power: 24KW for the QTZ5013 model[1]
• Trolleying Mechanism:
• Trolleying speed: 0-60m/min[1]
• Trolley motor power: 4.5KW[1]
• Slewing Mechanism:
• Slewing speed: 0~0.7r/min[1]
• Slewing motor power: 2×4.5KW[1]
• Jacking Mechanism:
• Jack climbing speed: 0.4m/min for some models[4]

Safety and Quality

• Materials: High-quality low alloy plate, quenching to ensure durability and stability[1].
• Certifications: CE certification and ISO9001:2000 compliance[3][4].
• Testing: All machines are tested before shipment to ensure 100% quality[3].
• Warranty: 14 months from the bill of lading date[3][4].
• Protective Devices: Includes lifting limiter, slewing limiter, trolley limiter, weight limiter, and moment limiter[3].

Applications and Uses

Tavol tower cranes are primarily used in various construction projects for lifting and hoisting large heavy objects such as building materials. They are versatile and can be employed in different types of construction sites, including high-rise buildings, infrastructure projects, and industrial facilities.

Installation and Maintenance

• Installation Instructions: Each product comes with detailed installation instructions to ensure correct usage[1].
• Installation Support: Tavol provides installation videos and professional guidance to assist in the installation process[3].
• Spare Parts: Free spare parts are provided within the warranty period[3].
• Technical Support: 24/7 technical support is available via email, telephone, or video online[3].

Customization and After-Sales Service

• Customization: Available to meet specific customer requirements[3][4].
• After-Sales Service: Includes 1-year after-sales service, user-friendly English manuals, and professional design drawings based on the installation site[3].

Global Presence and Market

Tavol cranes are exported to many countries worldwide, including the USA, Germany, Brazil, UK, Bangladesh, Philippines, Sri Lanka, Vietnam, Cambodia, and more. The company has an extensive sales and service network, with over 20 sales and after-sales agents within China and international installation teams serving more than 30 countries and regions[2][3].

Conclusion

Tavol tower cranes are renowned for their advanced technology, high-quality materials, and comprehensive safety features. With a wide range of models available, these cranes can cater to various construction needs globally. The company’s commitment to quality, customer service, and continuous innovation makes Tavol a reliable choice for construction companies seeking efficient and reliable lifting solutions.

Standard Tower Crane

Standard Tower Crane: A Comprehensive Guide

Description of Standard Tower Crane

A standard tower crane is a versatile and multipurpose crane designed for various construction sites. It features an upper slewing mechanism, a horizontal jib, a trolley mechanism, and a hydraulic jack-up design. This crane is known for its ease of operation and maintenance, making it an ideal choice for construction projects.

Key Features of Standard Tower Crane

Operating Mechanisms

• The crane is equipped with four different operating mechanisms: lifting, slewing, derricking, and jacking. These mechanisms can work individually or in combination to achieve high efficiency.

Height Adjustment

• The jacking mechanism allows for the increase or decrease of the tower’s height, which is particularly useful as the height of the building changes during construction.

Speed Options

• The crane is equipped with a multi-speed motor, offering rapid, medium, and slow speed options to cater to different construction requirements.

Worktable Scopes

• Multiple worktable scopes are available, enabling the crane to avoid various barriers during operation.

Slewing Capability

• The jib can perform a 540° full-circle slewing to the left and right, providing extensive coverage.

Independent Lifting and Height Adjustment

• The crane has an independent lifting capacity, and its tower body can be increased or decreased in height using the hydraulic jacking system.

Operator’s Cab

• The operator’s cab is independently mounted on the side of the crane, ensuring a large view and a good operation environment.

Detailed Specifications and Capabilities

Lifting and Slewing

• Flexible slewing and standard, accurate lifting are achieved through the crane’s design.
• The crane features a full-circle slewing capability, allowing for 360-degree rotation.

Safety Protection Devices

• The crane is equipped with several safety protection devices, including:
• Weight lifting limiter
• Moment limiter
• Lift height limiter
• Radius limiter
• Slewing limitator
• Additional safety features include rest platforms and guardrails.

Reliability and Sensitivity

• The safety protection devices are sensitive and reliable, ensuring the normal operation of the entire machine.

Specifications Table

Model	Max Load	Working Range	Tip Load	Mast Size
QTZ50-5010-4T	4 tons	50m	1 ton	1.5×1.5×2.5 m
QTZ50-5310-6T	6 tons	53m	1 ton	1.5×1.55×2.5 m
QTZ63-5510-6T	6 tons	55m	1 ton	1.643×1.643×2.5 m
QTZ63-5610-6T	6 tons	56m	1 ton	1.6×1.6×2.8 m or 1.643×1.643×2.5 m
QTZ80-5710-6T	6 tons	57m	1 ton	1.643×1.643×2.5 m
QTZ80-6010-6T	6 tons	60m	1 ton	1.75×1.75×2.5 m
QTZ80-6010-8T	8 tons	60m	1 ton	1.835×1.835×3 m
QTZ100-6012-8T	8 tons	60m	1.2 tons	1.835×1.835×3 m
QTZ100-6014-6T	6 tons	60m	1.4 tons	1.75×1.75×2.5 m
QTZ100-6511-6T	6 tons	65m	1.1 tons	1.75×1.75×2.5 m
QTZ140-7012-10T	10 tons	70m	1.2 tons	2.02×2.02×2.8 m
QTZ250-7030	12/16 tons	70m	3 tons	2×3×3 m
QTZ315-7040	16/20 tons	70m	4 tons	2×3×3 m
QTZ400-7052	20/25 tons	70m	5 tons	2.5×2.5×5.85 m

Design and Appearance

• The crane has a rational arrangement and a beautiful appearance, contributing to its overall functionality and aesthetic appeal.

Conclusion

The standard tower crane is a robust and versatile tool for construction sites, offering a range of features that enhance its efficiency, safety, and operational flexibility. With its advanced mechanisms, safety devices, and customizable specifications, it is well-suited to meet the diverse needs of various construction projects.

China Luffing tower crane manufacturers …

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

Luffing Jib Tower Cranes: A Comprehensive Guide

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 or lowered vertically, unlike conventional tower cranes which have fixed jibs. This unique feature is achieved through a luffing system that uses ropes and pulleys to adjust the angle of the jib.

Key Features of Luffing Jib Tower Cranes

Smart Designs and Easy Transportation

• Luffing jib cranes are designed for easy erection, disassembly, and transportation, making them highly versatile for various construction sites[1][3].

Ergonomic Operator Cab

• These cranes come with ergonomic operator cabs equipped with climate controls, easy-to-read display panels, and stepless motor operation for precise control over the trolley and hoist[1][3].

Long-Lasting Parts

• High-quality, long-lasting parts sourced from premium manufacturers ensure durability and a long working life even in heavy workload conditions[1][3].

Load Measurement System and Safety Features

• Luffing jib cranes often include load measurement systems for high hoisting speeds with light loads and built-in encoders for overspeed protection. They also feature anti-collision and zoning systems, as well as the option to install CCTV cameras for enhanced safety[1][3].

Different Foundation Configurations

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

Advantages of Luffing Jib Tower Cranes

Vertical Lifting in Confined Spaces

• The ability to luff the jib vertically makes these cranes ideal for construction sites with limited horizontal space, such as urban environments with closely situated buildings[2][3].

Reduced Slew Radius

• Luffing cranes have a smaller slew radius compared to traditional tower cranes, allowing for more efficient operation in crowded areas without encroaching on neighboring structures[1][2].

Precision and Control

• The luffing mechanism provides greater control over load placement, making it suitable 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 the 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

• Luffing jib cranes are highly suitable for urban construction sites where space is limited and traditional tower cranes may not be feasible. They can operate within a smaller radius and avoid obstacles such as surrounding buildings or power lines[1][2][3].

Wind Turbine Installation

• These cranes are also used in wind turbine developments due to their ability to achieve elevated hook heights, which is essential for wind turbine installation[1].

Auxiliary Cranes

• Using luffing jib cranes as auxiliary cranes to primary tower cranes can increase material handling cycles on the job site, minimizing construction time[3].

Safety and Regulatory Compliance

Public Safety

• Luffing jib cranes ensure that the jib and load remain within the construction site’s limits, enhancing public safety, especially in areas where oversailing rights are restricted[3].

Local Regulations

• In some regions, local regulations necessitate the use of luffing jib cranes to avoid flying over surrounding spaces while operating on a job site[3].

Conclusion

Luffing jib tower cranes offer a unique set of advantages that make them indispensable in modern construction, particularly in urban and confined spaces. Their ability to adjust the jib vertically, reduce the slew radius, and achieve higher hook heights makes them highly versatile and efficient. While they come with some disadvantages such as slower load handling and higher maintenance, their benefits often outweigh these drawbacks, especially in complex and space-restricted construction projects.

T Type Tower Crane

Guide to BQ Tower Cranes: Features, Types, and Selection Principles

Introduction to Tower Cranes

Tower cranes are essential machinery in civil construction and erection jobs, offering the best combination of height and lifting capacity. They are typically fixed to the ground on a concrete slab or sometimes attached to the sides of structures.

Types of BQ Tower Cranes

Luffing Jib Tower Cranes

Characteristics

• Luffing jib tower cranes are distinguished by their ability to raise and lower the jib, reducing the turning radius. This feature makes them ideal for work sites with tight spaces or height restrictions[2].

Models

• BQ GHD5020-10: Features a 50m luffing jib and a rated load of 10 tons.
• BQ GHD5522-12: Equipped with a 55m luffing jib and a rated load of 12 tons.
• BQ GHD5527-14: Offers a 60m luffing jib and a rated load of 14 tons[2].

Fixed Tower Cranes

Characteristics

• Fixed tower cranes are used for bigger construction projects. They have maximum lifting heights of up to 100 meters and a working radius of up to 80 meters[2].

Key Parameters and Features

Height of the Tower Crane

• The height of the tower crane should be 10 to 15 meters higher than the maximum height of the building to ensure adequate coverage and safety[3].

Jib Length

• The jib length should be determined based on the dimensions of the building, ensuring it can cover the entire project area with a little margin[3].

Maximum Load on Jib End

• This is determined by the weight of the objects to be lifted, as specified by the construction personnel[3].

Installation Methods

Fixing Angle in Large Concrete Blocks

• This method involves securing the crane to a large concrete foundation to handle the crane’s weight, which can range from 10 to 200 tons[3].

Large Chassis with Ballast

• This method uses a large chassis with ballast to stabilize the crane, each having different ground pressure requirements[3].

Traveling Type

• This type allows the crane to move around the construction site, suitable for projects requiring flexibility[3].

Determination of Free Standing Height

• The free standing height is crucial as it determines when the crane needs to be anchored to the building. When the height exceeds the free standing height, an anchorage frame is necessary to secure the crane to the building[3].

Considerations for Surrounding Environment

• The selection of a tower crane must consider the surrounding environment, including transportation roads, underground pipelines, the height of surrounding buildings, and high voltage lines. Large transport vehicles and truck cranes are required for installation and dismantling[3].

Additional Considerations

Power Consumption

• Tower cranes consume significant power, often in the range of dozens of kilovolts. Therefore, the installation site should be close to the transformer but avoid proximity to high voltage lines[3].

Multiple Crane Configuration

• For large and complex projects, multiple tower cranes of different sizes and heights may be necessary. The configuration should ensure complete coverage without interference between the cranes[3].

Internal Climbing Tower Cranes

• For very high buildings (over 150 meters), internal climbing tower cranes can be considered to facilitate the construction process[3].

Selection Principles

Main Parameters

• The selection process starts with determining the main parameters: height of the tower crane, jib length, and maximum load on the jib end[3].

Installation Method

• Choosing the appropriate installation method based on the site conditions and crane type is critical[3].

Free Standing Height and Anchorage

• Ensuring the crane’s free standing height and anchorage requirements are met to maintain stability and safety[3].

Environmental and Operational Factors

• Considering the surrounding environment, power consumption, and operational needs to ensure smooth and safe operation[3].

By following these guidelines and understanding the various types, features, and selection principles of BQ tower cranes, construction teams can make informed decisions to optimize their projects’ efficiency and safety.

Fixed Type Flat Top Tower Crane

Guide to Fixed Type Flat Top Tower Cranes

Introduction

Fixed Type Flat Top Tower Cranes are a specialized type of tower crane designed for efficiency, safety, and ease of operation, particularly in construction projects where overhead clearance is a concern. Here is a comprehensive guide to these cranes, covering their key features, specifications, and operational aspects.

Key Features

Design and Structure

• Flat Top Design: These cranes are characterized by their flat top structure, which eliminates the need for a pull rod. This design reduces the overall height of the crane, making it ideal for sites with restricted overhead clearance, such as near airports or in urban areas[2][5].

Assembly and Disassembly

• Easy Erection and Maintenance: The flat top tower cranes are designed for easy assembly and disassembly. Each section is equipped with a rest platform, and an inclined aluminum alloy ladder ensures safer and more labor-efficient climbing. The frame, lifting cylinder, and lifting beam are pre-assembled at the factory, reducing on-site installation costs[1][5].

Specifications

Load Capacity

• Max Load: The maximum load capacity of these cranes can vary, but common models range from 8 tons to 16 tons. For example, a typical model might have a max load of 8 tons with a tip load of 2.2 tons[1][5].

Jib Length and Free Standing Height

• Jib Length: The jib length can extend up to 85 meters, depending on the model. A common specification includes a jib length of 70 meters[5].
• Free Standing Height: The free standing height, which is the height the crane can reach without being tied to the building, can be up to 60.5 meters[5].

Mast Section and Foundation

• Mast Section: The mast section size varies but is typically around 2.52.55.95 meters or 2.02.03 meters. The material used is often high-strength steel such as Q345b[1][2].
• Foundation: These cranes are fixed to the ground on a concrete slab, sometimes attached to the sides of structures. The base is then connected to the mast section, providing the necessary height[2][5].

Operational Mechanisms

Hoisting and Slewing

• Hoisting Speed: The hoisting speed can range from 0 to 46 meters per minute, depending on the load and configuration. The cranes are equipped with variable frequency motor speed regulation for stable and reliable operation[5].
• Slewing Mechanism: The slewing mechanism is designed for smooth and precise rotation. The use of a semi-circular protective ring on the pulley prevents wire rope groove failure during high-speed lifting and turning[1].

Safety Features

• Weight and Torque Limiters: These cranes are equipped with weight and torque limiters that adopt a tension ring structure. The limiters for lifting, slewing, and trolleying are housed in cast aluminum casings, ensuring long service life and high safety standards[1].
• Braking System: The braking system uses reliable and durable brakes, such as those from Jiaozuo brand, and wheels made of cast steel. Dynamic balance tests ensure safe and reliable braking[1].

Electrical Control System

• Advanced Control System: The electrical control system uses European advanced frequency conversion + PLC + heavy-duty plug-in electrical control box design. This system is simple, easy to install and disassemble, and improves work efficiency[1].

Maintenance and Cost-Effectiveness

• Low Maintenance: The cranes are designed with low maintenance in mind. The gear reducer and other core components are built for reliability and long service life, reducing maintenance costs[1][3].
• Cost-Effectiveness: The easy erection, modular parts, and efficient operation make these cranes highly cost-effective. The pre-assembly of key components at the factory further reduces on-site installation costs[1][3].

Conclusion

Fixed Type Flat Top Tower Cranes offer a combination of high load capacity, ease of assembly, and advanced safety features, making them an ideal choice for various construction projects. Their design and operational mechanisms ensure efficient and safe operation, while their cost-effectiveness makes them a valuable asset for any construction site.

Types Of Tower Cranes China Manufacturer Guide

Given that the specific website you mentioned is not accessible in the search results, I will create a comprehensive guide to the different types of tower cranes based on the available information from other reliable sources.

Guide to Construction Tower Cranes

Introduction

Tower cranes are essential pieces of equipment in the construction industry, particularly for building tall structures such as skyscrapers and high-rise buildings. They are characterized by their vertical tower (mast) and a rotating horizontal jib.

Types of Tower Cranes

Hammerhead Tower Cranes

Description

Hammerhead tower cranes are the most common type of tower crane. They feature a long horizontal jib attached to a vertical tower, with a trolley that runs along the jib to position the hook. This design resembles an upside-down “L” shape.

Key Features

• The jib rotates 360 degrees horizontally around the mast at a fixed level.
• The trolley moves the load horizontally along the jib without changing its level, a function known as racking.
• Hammerhead cranes can be either A-frame or flat top types, with the latter being useful near airports or in areas where multiple cranes share the same airspace.
• Generally cheaper but take up more space on the construction site[2][4][5].

Luffing Jib Tower Cranes

Description

Luffing jib tower cranes, also known as luffing or luffer cranes, are distinguished by their diagonal arm that extends out from the top of the tower on an angle.

Key Features

• The hook block is located off the end of the jib, which can be raised and lowered.
• This movement allows the crane to fit within tight spaces, making them ideal for urban construction sites.
• Luffing jib cranes have a higher capacity than hammerhead cranes and are more expensive.
• They do not use a trolley; instead, the jib is raised or lowered to adjust the load position[1][2][4].

Self-Erecting Tower Cranes (SETC)

Description

Self-erecting tower cranes are designed to be assembled on site without the need for an assist crane.

Key Features

• These cranes feature an extendable mast and a jib that unfolds via hydraulic cylinders.
• They are often remote-controlled from the ground, though some versions may have a cab on the jib.
• SETCs are time and resource efficient, with lighter frames and lower maximum load capacities.
• Suitable for smaller structures or shorter projects where frequent erection, dismantling, and transportation are required[2][4].

Self-Supporting Tower Cranes

Description

Self-supporting tower cranes are used for shorter structures where tower extensions are not necessary.

Key Features

• These cranes are anchored at the base with weights or reinforced concrete blocks and may require piles to anchor to bedrock.
• The tower extends out of the anchor point and rotates around it.
• Considerations for the tower’s reach must be made prior to installation as they cannot be easily moved once in place[1].

Travelling Tower Cranes

Description

Travelling tower cranes are used on projects with large footprints that require regular relocation of equipment.

Key Features

• These cranes are either track-mounted or rail-mounted, allowing them to travel horizontally along a path.
• The path must be clear and level to prevent the crane from tipping over.
• Depending on the base or track design, loads may or may not be carried during the travelling period[1].

Self-Climbing Tower Cranes

Description

Self-climbing tower cranes are designed to increase their height as the building they are constructing grows.

Key Features

• They start as typical self-supporting tower cranes, anchored to a concrete reinforcing base.
• As the building extends vertically, the tower is anchored to the existing structure.
• When the crane needs to clear the structure, it increases its height by inserting a piece of tower within the existing tower and “climbing” upwards[1].

Derrick Cranes

Description

Derrick cranes are smaller and unique, often used on rooftops or in small spaces.

Key Features

• They are assembled in pieces and often used to assemble or disassemble tower cranes.
• Derrick cranes typically do not have an operator’s cab and are operated by remote control.
• They use outriggers to sit on a surface, making them suitable for tight spaces[1].

Parts of a Tower Crane

Base

• The base support is located at the bottom of the tower, typically attached to a concrete pad on the ground.
• This foundation carries the entire weight of the crane[4].

Mast or Tower

• The mast is the supporting structure that gives the crane its height.
• It is connected to the base through a large triangulated lattice that provides strength.
• The mast extends from the ground up and supports other elements like the hook and counterweights[4].

Slewing Unit

• The slewing unit is attached to the top of the mast, consisting of a gear and motor that allow the crane to rotate along its axis.
• It includes the jib (working arm), machinery arm (with load-lifting motor and counterweights), and the operator’s cabin[4].

Considerations When Choosing a Tower Crane

Required Capacity

• Determine the type of materials or equipment to be lifted.
• Consider whether the crane will be lifting light materials like formwork and concrete buckets or heavier equipment like generators and large steel members.
• Critical lifts, those within 10% of the crane’s total capacity, should be carefully planned[4].

Site Constraints

• Assess the available space on the construction site.
• Consider the need for frequent relocation of the crane and whether a travelling or self-erecting crane would be more suitable.
• Ensure the path for travelling cranes is clear and level[1][4].

Conclusion

Tower cranes are versatile and crucial for modern construction projects, especially in urban environments. Understanding the different types of tower cranes and their specific features and applications is essential for selecting the right equipment for your project. Each type of tower crane offers unique advantages and is suited to different construction needs, ensuring efficient and safe operation on the site.

Topkit Tower Crane GHT7032-12

Hammerhead Tower Crane: A Comprehensive Guide

Introduction

Hammerhead tower cranes are versatile and powerful lifting solutions widely used in various construction and industrial projects. Here is a detailed guide to help you understand the key features, specifications, and applications of these cranes.

Key Features of Hammerhead Tower Cranes

Design and Construction

• Hammerhead tower cranes are known for their robust design and high lifting capacity, making them ideal for heavy lifting tasks in construction, industrial, and port applications[1][3][4].

Load Capacity

• These cranes have a load capacity ranging from 10 to 50 tons, depending on the model. For example, the GHT7032-12 model has a maximum load capacity of 12 tons, while the QTZ 900 – 50T model can handle up to 50 tons[1][3][4].

Jib Length and Working Range

• The jib length of hammerhead tower cranes can vary, but common lengths include 60m to 70m. For instance, the GHT7032-12 model has a jib length of 70m, and the GHT6024-10 model has a jib length of 60m[3][4].

Free Standing Height

• The free standing height of these cranes is typically between 50m to 60m. The GHT7032-12 model has a free standing height of 52.4m, and the GHT6024-10 model has a free standing height of 59.7m[3][4].

Tip Load

• The tip load, which is the load at the end of the jib, varies by model. For example, the GHT7032-12 model has a tip load of 3.2 tons, and the GHT6024-10 model has a tip load of 2.4 tons[3][4].

Specifications

Hoisting, Trolleying, and Slewing Mechanisms

• Hammerhead tower cranes are equipped with advanced hoisting, trolleying, and slewing mechanisms. For example, the GHT7032-12 model uses a 55JLF30 hoisting mechanism, a 120JXL trolleying mechanism, and an RCV145 slewing mechanism[3].

Mast Section

• The mast sections are typically square or angel steel seamless tubes. The GHT7032-12 and GHT6024-10 models use a 2.0m2.0m3.0m mast (L68B2)[3][4].

Operating Heights

• When used independently, the free-standing height can range from 29m to 59.7m. When anchored, the maximum lifting height can reach up to 120m to 180m, depending on the model[2][3][4].

Industry Applications

Construction

• Hammerhead tower cranes are extensively used in construction projects for lifting heavy materials such as concrete, steel beams, and other construction elements[1][3][4].

Industrial

• These cranes are also used in industrial settings for tasks like assembling and moving heavy machinery and equipment[1].

Port

• In port applications, hammerhead tower cranes are utilized for loading and unloading cargo and handling heavy containers[1].

Pre-Cast

• They are particularly useful in pre-cast construction for lifting and placing pre-cast concrete elements[1].

Selection and Installation

Height Considerations

• The height of the hammerhead tower crane should be 10 to 15 meters above the maximum height of the building to ensure safe and efficient operation[2].

Arm Length

• The arm length should be long enough to cover the entire project area with a slight margin for maneuverability[2].

Maintenance and Support

Warranty and After-Sales Service

• Most hammerhead tower cranes come with a one-year warranty for core components such as bearings, gearboxes, motors, and pumps. Manufacturers often provide online support, video technical support, and mechanical test reports[3][4].

Overseas Service Outlets

• Some manufacturers have overseas service outlets, such as in the UAE, to provide local support and services[3][4].

Conclusion

Hammerhead tower cranes are powerful and versatile tools essential for various heavy lifting tasks in construction and industrial settings. Understanding their specifications, features, and applications can help you choose the right crane for your project needs and ensure efficient and safe operation.

China Wholesale Tower Crane Manufacturer & Supplier

Given that the specific website https://ihurmo.com/product-category/tower-crane/ is not accessible in the provided search results, the following guide will be based on the general information about tower cranes gathered from the other sources.

Guide to Tower Cranes

Introduction

Tower cranes are essential tools in modern construction, known for their ability to handle heavy lifting tasks efficiently and precisely. Here is a comprehensive guide to understanding the components, types, and operational mechanics of tower cranes.

Basic Mechanics of Tower Cranes

Base and Stability

Tower cranes begin their operation by being bolted to a solid base, which can be a concrete pad or a steel structure. This base provides the necessary stability and anchoring for the crane. For large tower cranes, the concrete pad can be up to 30′ by 30′ and 4′ deep, with a weight of up to 400,000 lb to ensure stability[2][4].

Mast (Tower)

The mast, or tower, is the vertical structure that gives the crane its height. It is constructed using steel lattice segments assembled on-site to achieve the required height. These segments provide additional strength and rigidity, allowing the crane to reach lofty heights without compromising stability[2][4].

Turntable

At the top of the mast, the turntable is installed, enabling the jib (the working arm) to rotate a full 360 degrees. This mechanism is crucial for positioning loads accurately across the construction site[2][5].

Jib and Counter Jib

• Jib: The jib stretches horizontally from the top of the tower and carries the load. It can be fixed, as in hammerhead cranes, or adjustable, as in luffing jib cranes.
• Counter Jib: The counter jib extends in the opposite direction of the jib and balances the crane’s weight distribution by mounting heavy counterweights, typically made of reinforced concrete and steel[2][4].

Trolley and Hook Block

The trolley is a movable part that travels back and forth along the jib, carrying the hook block. The hook block functions as a pulley system, allowing the hook to move vertically up and down the tower, facilitating the lifting and lowering of loads[2][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.
• Often used in situations where multiple cranes operate in the same airspace or where space is limited.
• Can have a “flat top” design without a tower top or pendant lines, making them suitable for projects with multiple cranes[2][3][5].

Luffing Jib Tower Cranes

• Have an adjustable jib that can be raised or lowered to change the angle.
• Ideal for construction sites with limited space or where the crane needs to operate below a certain height due to obstacles like power lines or nearby buildings[3][5].

Self-Erecting Tower Cranes

• Smaller and more mobile, these cranes can erect themselves without the need for additional cranes.
• Suitable for short-term construction projects and can be easily transported and set up.
• Often used for smaller-scale projects where the maximum height does not exceed 150 meters[3][4].

Operating Components

Operator’s Cab

The operator’s cab is where all the controls are located, allowing operators to manage the crane’s operations. Inside, operators use joysticks and computer systems to execute precise movements and ensure safe lifting[2].

Load Management

Load management relies heavily on precision and balance. The crane’s design ensures that tension is managed effectively during lifting operations. Load moment indicators (LMI) are used to prevent overloading and ensure the load does not extend to an unsafe distance along the jib[2][4].

Key Considerations for Choosing a Tower Crane

Working Radius

The working radius is the horizontal distance from the root of the tower crane boom to the far end of the boom. It is determined according to the diagonal length of the building plan[3].

Maximum Height

The height required under the hook of the tower crane needs to be 6-10 meters more than the highest height of the building to ensure adequate clearance[3].

Maximum Lifting Capacity

The maximum lifting capacity depends on the weight of the heaviest cargo lifted in a single lifting operation and its location on the floor plan[3].

Mast Section Types

Mast sections can be fixed or split types. Fixed types are cheaper but less convenient to transport, while split types are more expensive but easier to transport[3].

Installation and Operation

Installation Location

The installation location is critical and must be chosen based on the boom length, height, and maximum lifting capacity of the crane. Different types of cranes (stationary, traveling chassis, etc.) are suited for different installation needs[3].

Assembly and Disassembly

For large tower cranes, the components are hauled to the job site and assembled using a mobile all-terrain crane. The mast sections, jib sections, slewing unit, and counterweights are all carefully assembled to ensure stability and functionality[4].

Conclusion

Tower cranes are complex machines that play a vital role in modern construction. Understanding their components, types, and operational mechanics is crucial for efficient and safe use. By considering factors such as working radius, maximum height, and maximum lifting capacity, construction teams can select the most suitable tower crane for their project needs.

Frequently Asked Questions (FAQs)

What are the main types of tower cranes and their characteristics?

Tower cranes can be categorized into several main types based on their design and functionality. The primary types include:
– Horizontal Boom Tower Cranes: These cranes, which include flat-top and hammerhead (or topkit) designs, are suitable for most construction projects where the crane can rotate freely. Flat-top cranes are a newer trend, offering more flexibility in changing boom lengths and are ideal for environments with multiple cranes and high density[1][3][5].
– Luffing Jib Tower Cranes: These cranes are more suitable for restricted and crowded spaces because they do not require wide swing clearance. They adjust the angle of the jib to lift loads, making them ideal for urban construction sites[3][5].
– Upper and Lower Rotary Tower Cranes: Upper rotary tower cranes have the boom and balance arm rotating around the center line of the tower body, while lower rotary tower cranes have the slewing support installed between the base and the turntable, allowing the entire working mechanism to rotate together[2].

How do I choose the right tower crane for my construction project?

Choosing the right tower crane involves several key considerations. First, determine the maximum lifting capacity required based on the heaviest cargo to be lifted and its location on the floor plan. Consider the available working radius and whether the construction site provides sufficient clearance for the crane’s rotation. The height and working clearance above the crane, as well as the required clearance under the hook, are also crucial factors. Additionally, evaluate the installation location and whether the crane will be free-standing, anchored to the building, or internally climbing. For projects with limited space or super high-rise buildings, internal climbing cranes may be the best choice[1][3][4].

What are the key components of a tower crane?

A tower crane is composed of several critical components. The mast is the vertical tower structure made of steel sections bolted together, providing height and stability. The jib is the horizontal arm that extends from the top of the mast, carrying the lifting mechanism and allowing the crane to reach different areas of the construction site. Counterweights are used to balance the load being lifted, typically made of concrete or steel. The slewing mechanism enables the crane to rotate horizontally, while the hoisting mechanism is responsible for lifting and lowering loads. Other essential components include the controls for operating the crane and the trolley for moving the load along the jib[2][4][5].

What are the differences between fixed, traveling, and internal climbing tower cranes?

Tower cranes can be classified based on their installation and operation methods:
– Fixed Tower Cranes: These cranes are installed on a prefabricated foundation and do not move once set up. They are suitable for projects where the crane does not need to cover a large area[1][2].
– Traveling Tower Cranes: These cranes need to lay tracks and are suitable for projects requiring the crane to cover a longer construction area. They are commonly used in projects like airport terminals and industrial plants[1][2].
– Internal Climbing Tower Cranes: These cranes are installed inside the elevator shaft of the building and are suitable for super high-rise buildings or projects where external installation is impossible. They offer the advantage of climbing as high as the building requires but involve more complex and expensive installation and dismantling processes[1][3].

How do tower cranes ensure stability and balance during operation?

Tower cranes ensure stability and balance through several mechanisms. The mast provides the vertical structure and stability, while counterweights attached to the counter jib balance the load being lifted. The slewing mechanism allows the crane to rotate, compensating for the balance