Double girder overhead crane manufacturers introduce the requirements, specifications and classifications of grab cranes; grab crane is an automatic reclaiming machine, and its grabbing and unloading actions are controlled by the driver of the unload without auxiliary personnel, thus avoiding It saves the heavy labor of the workers, saves auxiliary man-hours, and greatly improves the handling efficiency. Grab cranes are generally divided into overhead grab cranes and grab gantry cranes.

Use Grab Overhead Crane Notice

• The crane operator should operate the crane.
• It is forbidden for anyone to stay on the crane and the crane working area while the crane is working.
• The crane should be at least 0.5m higher than the highest obstacle on the running line during heavy-load operation.
• Do not throw things directly from the crane.
• It is forbidden to place flammable objects on the crane. Tools and maintenance supplies must be placed in special boxes, and are not allowed to be placed on winch trolley winch and steel structure to avoid falling and hurting workers.
• Do not lift heavy objects from people’s heads.
• During operation, if the crane is found to be abnormal, it must be stopped and checked immediately, and the fault should be eliminated after work.
• When the lifting brake of the crane suddenly fails, the operator should calm down and take corresponding measures according to the specific situation. If the surrounding environment does not allow, the operator should immediately get off the crane and arrange a dedicated maintenance team or engineer for maintenance.
• Objects that fall directly can be raised repeatedly. After starting the crane, choose a good place to place the object to be dropped, and don’t let it fall freely.
• When lifting the grab, the lifting rope should be the same length as the opening and closing rope to make the wire rope evenly stressed.
• It is not allowed to grab heavy objects that exceed the rated load.
• Before each shift, check the tightness of the rope at the grab hanger and the grab opening and closing rope guide wheel.

Grab Crane Important Parts Grab Presentation

With the development of society, some intensive manual labor is gradually replaced by mechanical production. Cranes are one of the most widely used industrial machinery. It has the functions of reducing labor intensity, saving manpower, reducing construction costs, improving product quality, and accelerating construction speed. It plays a very important role in the mechanization of construction.

Grab and crane loading and unloading of bulk materials is a picking device, mainly used for loading and unloading a large number of bulk materials. The operator operates in the cab to grab and unload, without the assistance of auxiliary personnel, and has high work efficiency. It is widely used in ports, stations, mines, storage yards, grains, etc. The production of the grab crane avoids the heavy labor of the workers, saves production time and working time, greatly improves the handling efficiency, and can avoid the personal injury of the workers, ensure the safety of the workers, and also improve the safety of the operation.

In the mining industry, the use of grabs for underground operations and demolition and loading operations in open-pit mines also shows its unique advantages. At the construction site, good results and feedback were also received. At present, the scope of use of grabs at home and abroad is expanding, and the types of different departments and different objects are gradually increasing, and the trend of specialization is also very obvious.

Grab Crane Domestic Development Status Quo

The research and development of Chinese construction cranes began in the 1950s and 1960s, and experienced the introduction and absorption from the late 1970s to the 1980s and the self-development stage since the 1990s. At present, the overall lifting project is becoming more and more common, which requires the crane’s lifting capacity, operating range and height to be higher and higher. Large-scale hoisting equipment has gradually expanded from the single pole method in the past to a high-performance, safe and reliable large-scale mobile crane as the core lifting equipment. The design of my country’s grab buckets is limited by technology, and most of them are mechanical grabs with single function, large volume and low degree of automation. In recent years, thanks to the efforts of countless technicians, some breakthroughs have been made in the field of grabs, such as side-positioned halberd opening and closing mechanisms, tooth and side plate connection mechanisms, closed grabs, etc.

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