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Characteristics of flexible lifting belts

Characteristics of flexible lifting belts

1. Selection of rigging specifications and types When selecting rigging specifications, the size, weight, shape of the load to be lifted, as well as the service mode coefficient jointly affected by the lifting method to be used must be included in the calculation, and the requirements for the ultimate working force given must be considered. At the same time, the working environment and the type of load must be considered. Rigging with adequate capacity and proper length to meet the use mode must be selected. If multiple riggings are used for lifting loads at the same time, the same type of rigging must be selected; The raw materials of the flat rigging shall not be affected by the environment or load. Whether accessories or soft lifting lugs are required, it must be carefully considered that the end of the rigging is matched with the auxiliary accessories and lifting equipment.

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09

Analysis of the development and change of lifting appliances

Analysis of the development and change of lifting appliances

As the supporting equipment of metallurgical cranes and the essential key equipment for safe production in the metallurgical industry, the reliability, safety and progressiveness of lifting appliances have always been highly valued by people. Due to the constraints of traditional metallurgical processes, domestic metallurgical lifting appliances were basically produced or made some small improvements and development under the process mode of the former Soviet Union 30 years before the reform and opening up. With the deepening of domestic reform and opening up policies, The introduction of a large number of foreign advanced technologies and the improvement of metallurgical processes in domestic metallurgical enterprises put forward higher requirements for the production and manufacture of metallurgical slings. The improvement of metallurgical process, such as the transformation of steelmaking process from the former Soviet Union model to the continuous casting and rolling model in the industrial developed countries, has also brought about great changes in the types and forms of metallurgical slings. The clamps used in old metallurgical slings, such as ingot stripping cranes, and soaking pits have gradually been eliminated.

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2021

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09

Transportation advantages and characteristics of safety rope in winch

Transportation advantages and characteristics of safety rope in winch

In order to give better play to the transportation advantages of the endless safety rope winch, standardize the use of safety ropes in the air lane of the 426 fully mechanized mining face, and reduce and eliminate mechanical and above accidents, we need to explain the safety technical measures. 1. The driver of the stepless safety rope continuous traction winch must receive professional technical training, obtain the operation qualification certificate, and work with the certificate; 2. The driver of the continuous traction winch must be familiar with the structure, performance, principle, main technical parameters, integrity standards and other relevant provisions of the equipment, and be able to conduct general inspection and troubleshooting; 3. Be familiar with the basic conditions of the roadway, such as the constant speed of the roadway, the number of tractors, etc; 4. The relevant electromechanical maintenance workers must be equipped to manage the equipment with tags and carry out maintenance as required; 5. Collect the leaking intercom in strict accordance with the regulations of the Work Safety Information Center, and timely submit it to the wellhead information station for management and charging after use; In addition to these accidents, our preparation and inspection before use are also important. For example, check whether electric control equipment such as starter is normal; Whether the transmission and reception of communication signals are normal, whether there are sundries in the track that affect the operation of vehicles, and a series of important factors. Therefore, we should thoroughly understand a series of structures of safety ropes.

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2021

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09

Precautions and maintenance of slings

Precautions and maintenance of slings

(1) If the rotation of the rotary lock is not flexible or in place during the use of the spreader, check and adjust the adjusting nut, and then check other parts. (2) During use, the paint on the indicator board of the spreader shall be prevented from falling off. (3) Clean and apply lubricating oil or grease, especially at the bend of wire rope. (4) The main stressed components, rings, rotary locks, padeyes and rigging shackles shall be inspected at least once every 3 months under normal use and cleaning conditions, without cracks and serious deformation. (5) All oil cups, including the oil cup of ratchet mechanism, the oil cup on the sliding bearing seat and the oil cup of the rotary lock box, shall be filled with lubricating oil at the main movable joints according to the service conditions. (6) Frequently check whether the rope clip is loose and whether the buffer spring is over stretched. (7) Each lifting appliance shall not exceed the rated lifting capacity, and the buffer spring shall not be overstretched. (8) Prevent collision and deformation during lifting.

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