Crane Hook Block

Company advantages

Technical team

We have 6 professional engineers and a R&D technical team with rich practical experience and strong development capabilities.

 

Advanced equipment

The company has a complete manufacturing process and tooling for crane parts and 52 sets of processing equipment. It can produce Φ200mm-Φ2000mm ring forged pulleys, rolled pulleys, forged pulleys and other pulley sets and pulley specifications.

Rich experience

The company was established in 2012 and has more than 10 years of production experience and 5 years of export experience.

Our certificate

ISO9001, ISO4001, ISO45001

 

 

 

What is Crane Hook Block

 

Crane hook set is a common spreader in lifting machinery, mainly composed of hooks and other accessories or equipment. The hook set usually includes hooks, pulley blocks, moving pulleys, pulley shafts, bearings and other components, which work together , so that the crane hook group can carry out lifting operations safely and effectively. Hook sets are suitable for a variety of cranes, such as overhead cranes, gantry cranes, etc., and are available in a variety of types and specifications to meet different weights and operating needs

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Benefits of Crane Hook Block

 

Flexible device
One of the most important functions of a hook set is to facilitate the free turning or rotating hook assembly. When lifting a load, it is often necessary to turn the load to position it in a new position or to avoid hitting an obstacle. A crane hook connected directly to a hoisting rope can cause the rope to twist if the load deviates from its original direction. This can have a number of undesirable effects, such as placing excessive stress on the rope and boom pulleys, creating an unbalanced load, and causing the load to swing backwards in an uncontrolled manner when released. The hook set allows the load to rotate freely without changing the direction of the hoisting rope.

 

Improve security
In the case of small and manageable loads, this rotation of the load can be facilitated by hand, or it can be achieved by a powered hook that can be rotated remotely by the crane operator or ground personnel. This allows for very controlled and precise rotation and placement of very large and bulky loads. Powered hook blocks also mean that ground personnel do not need to be involved in the rotation of the load, which greatly improves the safety of this type of operation.

 

Multifunction
The second major benefit of using a hook set is the ability to use multiple lift pulleys. The load rating of the rope used to lift the load is determined based on the overall rating of the crane. If a single rope is used, it must be very thick, which creates many problems related to the design, construction, and operation of the crane. It also creates safety issues because there is no redundancy or safety margin if the rope breaks. Using multiple ropes means that the length or fall of each rope is much thinner than a single rope, the load is better distributed across the top of the boom or jib, and there is a redundant system in the event of a rope break.

 

 
Types of Crane Hook Block
 
01/

Universal hook set
The universal hook group is the most common type of hook group. It is mainly composed of a hook, chain, pulley, wire rope and other connecting parts. It is a hook group used in ordinary lifting situations. The application range is very wide, covering many fields, such as manufacturing, construction, transportation, warehousing, etc. In production and manufacturing, universal hook sets are often used in lifting, loading and unloading, transportation, equipment installation, maintenance and repair, etc. In the field of construction, universal hook sets are widely used in housing construction, bridge construction, high-rise formwork demolition and other projects. In the field of transportation, universal hook sets are mainly used for container lifting, yard cargo loading and unloading, container loading and unloading, etc.

02/

Pallet hook set
The pallet hook set consists of hooks, handles, locking devices, etc. It is mainly used for lifting and hanging goods, especially pallets of various specifications and sizes. It has been widely used in logistics, warehousing, processing and manufacturing and other industries, and it has been widely used in automated warehouses, light logistics and transportation, food processing industry, pharmaceutical industry and other fields.

03/

Electric hook set
The electric hook group is a hook group with lifting function and easy to move. It is mainly used for lifting work at high places. It consists of motor, reduction device, braking mechanism, controller, etc. Electric hook sets are widely used in container terminals, shipyards, steel structures, machinery manufacturing and automated production lines. The electric hook group can be designed and implemented according to different electrical systems and control methods, and various parameters can also be adjusted according to work needs to meet the requirements of different environments and working conditions.

04/

Pneumatic hook set
The pneumatic hook group is a hook group that uses compressed air as power. It consists of a cylinder, a piston, a hook, a gas pipeline, etc. Pneumatic hook sets are mainly used in chemical industry, printing, textile, medicine and other fields. The advantage of the pneumatic hook set is that it is easy to transport, and generally only requires the installation of compressed air pipes. In addition, because compressed air has good adhesion, the pneumatic hook set is suitable for lifting objects that are not easily contaminated by grease.

05/

Magnetic hook set
The magnetic hook set is a hook set made using electromagnetic principles. It consists of electromagnets, hooks, wire ropes, controllers, etc. Magnetic hook sets are widely used in steel, machinery, shipbuilding, automobile manufacturing and other fields. The magnetic hook set can lift steel plates, steel materials, copper materials, aluminum materials and other metal products, and its adsorption force is very strong.

06/

Rotating hook set
The rotating hook group is mainly composed of hooks, chains, rotating shafts, etc. It is mainly used in situations where heavy objects need to be flipped and rotated. Rotating hook sets are widely used in refining, steel, shipbuilding, construction and other industries. Rotating hook groups come in different forms such as manipulators, robotic arms and lifting equipment, which can be selected and used according to different work needs.

 

Electric Hoist Crane Hook Block

 

Components of Crane Hook Block

Hook safety card
The hook safety card is an important part of the hook group. Its function is to ensure that the hook will not accidentally fall off during the hanging of goods. The principle of the hook safety card is to add a lock to the hook to prevent shock or vibration from causing the hook to fall off. The hook safety card is set on the top or side of the hook as needed to ensure the safety of the hook.

 

Hook shaft
The hook shaft is the core component of the hook set. Potential damage and wear have a direct impact on the safety of the hook set. The hook shaft is generally made of special alloy materials and processed through multiple processes such as heat treatment and surface treatment. The core of the hook shaft is the hollow part used for loading goods, which is fixed on the hook through locking parts; both ends are mostly processing equipment, one end is connected to the hook seat, and the other end is installed in the wire rope of the hook group.

 

Hook seat
The hook seat is the rotating structure of the hook group. Its main function is to allow the hook group to rotate around a fixed point to continuously generate torque. The hook seat is usually installed at the pole head position on the lifting machinery. There is a fixed connection structure between the lower end of the hook shaft and the hook seat, such as screws, pins, latches, etc.

 

Hanging ring
The hanging ring is the connecting piece of the hook group, which connects the hook base and the wire rope. The connection of the entire hook set is very important and needs to ensure strength, safety and durability to avoid accidents during transportation.

 

Wire rope
The wire rope is another important part of the hook group. It is used to connect the hook base and the wire rope of the hoisting machinery to achieve lifting and transportation of goods. The strength, durability and flexibility of the steel wire rope need to be paid attention to during use; regular inspection and maintenance are required to ensure the integrity and safety of the steel wire rope.

 

Characteristics of Crane Hook Block
 

The hook set can be customized according to actual needs, and the size, quantity and matching of hooks and accessories can be adjusted to adapt to different working scenarios and weight requirements. The main features of the hook group are as follows:

Reasonable structure

Each component of the hook group has been strictly designed and calculated to ensure its structural rationality and stability.

Safe to use

The accessories of the hook set are anti-corrosion and wear-resistant, which can ensure the safety of use.

Flexible use

The accessories of the hook set can be matched as needed, making it flexible and convenient to use.

Simple maintenance

The accessories of the hook set are easy to replace and maintain, which can effectively extend the service life.

 

How to Choose Crane Hook Block

 

Load demand
First determine the maximum load that the lifting hook needs to carry, including the weight and center of gravity location. Select the appropriate hook rated load based on load requirements.

 

Material quality
Lifting hooks should be made of high-strength, wear-resistant materials, such as alloy steel or special steel. Make sure the hook has sufficient strength and durability.

 

Hook shape
Select the appropriate hook shape according to the size and shape of the lifting object, such as single hook, double hook, hoop hook, etc. Make sure the hook can hold the lifted object securely.

 

Safety factor
Choose a hook with an appropriate safety factor to ensure it remains safe under unexpected loads or overload conditions.

 

Standards compliance
Make sure the selected hook complies with national or industry standards, such as GB/T10051-2010 "Hooks for Hoisting Machinery", etc. These standards stipulate the design, manufacturing and use requirements of hooks to ensure their safety performance.

 

Inspection and maintenance convenience
Choose a hook design that is easy to inspect and maintain to facilitate regular inspection and maintenance to ensure the hook is in good working order.

 

Usage environment
Consider the environmental conditions in which the hook is used, such as temperature, humidity, chemical corrosion and other factors. Choose a hook made of a special material suitable for the environment.

 

 

Process Of Crane Hook Block

Material selection
Choose alloy steel or other metal materials with high strength and high wear resistance. The material should have good welding performance and mechanical properties to ensure that the hook will not break or deform during lifting.

 

Heat treatment
Use appropriate heat treatment processes, such as quenching, tempering, etc., to improve the hardness and strength of the hook.
Ensure that the hook can maintain its structural integrity and stability when lifting heavy objects.

 

Forging process
Precision forging technology is used to ensure that the internal structure of the hook is uniform and tight, reducing internal defects.
By forging, the fatigue strength and durability of the hook can be improved.

 

Precision
High-precision processing equipment and technology are used to ensure that each size and shape of the hook meets the design requirements. Make sure the hook's connecting hole, hook tip, and other key parts are sized accurately to ensure proper use and safe operation.

 

Surface treatment
Carry out surface cleaning and rust removal, and then carry out surface coating or plating, such as galvanizing, hot-dip galvanizing, spraying, etc., to improve the corrosion resistance of the hook. Through surface treatment, the service life of the hook is extended and its appearance quality is improved.

 

Qc
Implement a strict quality control system, including raw material testing, production process control and finished product inspection, to ensure that the quality of the hooks meets standard requirements. Conduct mechanical performance testing, fatigue testing, etc. on the finished product to ensure the safety and reliability of the hook in actual use.

Crane Lift Hook Block Assembly

 

How to Maintain Crane Hook Block
 

Check the working status of the hook group

Before use, a comprehensive inspection must be carried out, including whether the various components of the hook group are intact, whether the connections are firm, and whether the lubrication is good, etc. If any damage or abnormality is found, use should be stopped immediately and necessary repairs and replacements should be made.

Correct operation of hook set

During use, correct operation must be performed in accordance with the operation manual or relevant regulations. It is strictly prohibited to overload the hook set to avoid equipment damage and personal injury. At the same time, attention should be paid to the hanging and unloading process of the hook group to ensure stability and safety.

Keep the work environment clean and tidy

When using a semi-enclosed hook set, the working environment should be kept clean and tidy to avoid debris or obstacles from hindering the normal operation of the hook set. At the same time, special attention should be paid to the safety of the working area to prevent people from accidentally entering dangerous areas.

Regular maintenance and upkeep of hook sets

Perform regular maintenance on the semi-enclosed hook set, including lubrication, tightening bolts, checking the electrical system, etc. Discover and solve potential problems in time to extend the service life of the hook set and ensure its safe and reliable operation.

 

 

Our Factory

 

Henan Zhongzao Industry Co., Ltd has a registered capital of 10 million yuan, which is located in Changyuan City, Henan Province, and we are professional manufacturer and seller of crane accessories.Our main products include crane spreader, crane hook sets, pulley sets, rolling pulleys etc.The company covers an area of 9600 square meters and has R & D technical team with rich practical experience and strong development ability.

 

Factory pictures
 

 

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Certificate
 

 

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FAQ
 

 

Q: What is the hook block on a crane?

A: Hook blocks, often called crane blocks or crane bottom blocks, are below-the-hook crane lifting equipment designed for your specific application. Sheave configuration, capacity, special control requirements and unique reeving patterns can be incorporated to improve your industrial lifting equipment operation.

Q: What are the different types of crane blocks?

A: They come in various types, depending on the specific needs of the lifting project. Common hook block types include single-sheave, double-sheave, and multi-sheave blocks. Single-sheave blocks are typically used for lighter loads and have a single pulley to support the lifting line.

Q: What is the function of hook block?

A: The crane hook blcok is a combination of pulley and hook. Use on the crane, through the wire rope and the coil connection, the rise and fall through the pulley's multiplier to decide, the greater the greater, the rise the slower.

Q: What is the function of crane hook?

A: The hook is the main connecting point between the crane and the load it needs to carry. When you need to move large or heavy items around your job site, you can trust the hook to hold them so the rest of the crane can do its work. Hooks should be durable and strong so they can handle substantial loads of materials.

Q: What is a 2 block on a crane?

A: Two blocking refers to a situation when a crane's lower load block for instance the hook assembly, comes in contact with its upper load block, i.e. the boom tip. This can cause the hoist line to fail as it puts a lot of stress on the assembly and damages it.

Q: How many types of crane hooks are there?

A: Before we dive into the individual specs and features of crane hooks, note that all kinds of crane hooks are divided into two broad categories: single crane and double crane hooks. When looking for the right hook for your crane, assess your needs and operational requirements.

Q: How shall the load be attached to the hook block?

A: Question: The language in §1910.179(n)(2)(ii) states: "The load shall be attached to the load block hook by means of slings or other approved devices." Is it permissible to attach the load above the block hook to the running rope (cable) itself? Response: No.

Q: What is sheaves in hook block?

A: A block is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift or pull heavy loads. A sheave is a pulley with a grooved wheel for holding a belt, wire rope, or rope. Sheaves can be used to redirect a cable or rope, lift loads, and transmit power.

Q: Why are crane hooks forged?

A: Forging is always better for hooks because of the part size (same strength from a smaller part), weight, strength, toughness and ductility properties. Cast parts are larger, heavier, weaker, more brittle and require more expensive inspection techniques due to the probability of internal defects.

Q: What are the different types of hook blocks?

A: According to different standards, hook blocks can be classified into different types, the single hook blocks and double hook blocks, the forging hook blocks and laminated hook blocks, closed hook blocks and semi-closed hook blocks, and other hooks, such as, electric rotary hook blocks, etc.

Q: Are crane hooks forged?

A: The crane hooks forged by are proven and reliable. Steel is a very malleable substance. It can be cast or forged into just about any shape. The limitations of what it can do are really only restricted to its structure at an atomic level.

Q: What are the advantages of crane hook?

A: An optimal crane hook approach maximizes the use of your crane and building space, and also increases productivity. In warehouses, factories or facilities that employ cranes for material handling, greater productivity and efficiency is often the key to increased profitability.

Q: What is the ball on a crane called?

A: A headache ball is a weighted sphere attached to a lifting hook; the assembly is fastened to a wire rope for crane lifting operations (Figure 1). Figure 1. Headache balls, also known as overhaul hook balls, are used to keep tension on load lines — usually, single-part or “whip” lines.

Q: Is a crane hook considered a suspended load?

A: As stated in that letter, "The OSHA standard on overhead and gantry cranes, §1910.179, defines a load as 'The total superimposed weight on the load block or hook. ' Since below the hook devices or slings would be part of the weight on the load block or hook, these would be considered a suspended load."

Q: Should crane hooks that get heavy service be inspected?

A: The frequency of inspections depends on the crane's usage. For example, a crane that operates under normal service should be inspected monthly, a crane under heavy service should be inspected weekly to monthly basis, and a crane in severe service must be inspected daily to weekly basis.

Q: Why are crane hooks forged?

A: Forging is always better for hooks because of the part size (same strength from a smaller part), weight, strength, toughness and ductility properties. Cast parts are larger, heavier, weaker, more brittle and require more expensive inspection techniques due to the probability of internal defects.

Q: How often do crane hooks need to be inspected?

A: The frequency and documentation requirement of the periodic inspection shall be dependent on the type of equipment in which the hook is used, but at least annually. During the inspection, some of the conditions that should be looked for include: Deformation. Wear or Corrosion.Crane hook block weights are very accurate weighing systems that are integrated into the crane hook block. They are powered by easily exchangeable rechargeable batteries. Their advantage over normal weighing hooks is that they do not lose space through integration.

Q: Can you weld on a crane hook?

A: Repairs by welding or reshaping are not generally recommended. If such repairs are attempted they shall only be done under competent supervision and the hook shall be tested to the load requirements of paragraph (k)(2) of this section before further use.

Q: Why do cranes have two hooks?

A: The two-hook magnetic lifting device is better than the single hook crane lifting device in handling large heavy steel plates in performance, that's because the latter tends to shake up and down during the moving and transfer process of plate.

Q: Can I tie off to a crane hook?

A: For general industry, OSHA can allow direct attachment to a crane only if you are following OSHA's hierarchy of controls. This means that the crane attachment point, crane controls and administrative controls must be engineered or validated by a qualified person.

We're professional crane hook block manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy high-grade crane hook block made in China here from our factory.

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