Large channel linear guide caving transition hydraulic support

Abstract

A large-channel linear-guided top-coal caving transition hydraulic support, including a column and a top beam and a base hinged at both ends. There are four columns, arranged symmetrically in front and rear rows, and one side of the top beam is provided with a top beam side guard Plate, the front beam hinged at the front end of the top beam, the front beam jack hinged between the top beam and the front beam, the telescopic beam inserted into the front beam, the telescopic beam hinged between the supporting plate and the telescopic beam overlapped by the front beam Jack, the tail beam hinged at the rear end of the top beam, the tail beam side guard plate is provided on one side of the tail beam, the insert plate in the tail beam, the insert plate jack for pushing and pulling the insert plate, the tail beam jack hinged between the base and the tail beam , the pushing mechanism, foot pedal, and sliding mechanism installed on the base, and a linear guide mechanism is provided between the base and the top beam between the front and rear columns. The linear guide mechanism includes a base combination integrated with the base. The box body and its corresponding guide box body, the other end of the guide box body is hinged with the top beam, and a pedestrian passage is provided between the linear guide mechanism and the front column.

Description

technical field [0001] The invention relates to the technical field of coal mining support equipment in coal mines, in particular to a large-channel linear-guided top-coal caving transitional hydraulic support for a top-coal caving mining face. Background technique [0002] The top-coal caving hydraulic support is the key equipment of the top-coal caving mining method. The top-coal caving transition hydraulic support is a special hydraulic support used for the transition section at both ends of the top-coal caving face. The innovation and development of the frame type is the key to the top-coal caving mining technology An important condition and symbol of innovation and development. At present, the frame types of caving transition hydraulic supports mainly include reverse four-link support type, positive link support type and single pendulum support type. These frame types have their own advantages and disadvantages. Accelerating and deepening the understanding of comprehen...

AI Technical Summary

Problems solved by technology

At present, the frame types of caving transition hydraulic supports mainly include reverse four-link support type, positive link support type and single pendulum support type. These frame types have their own advantages and disadvantages. Accelerating and deepening the understanding of comprehensive mechanized mining, the performance of these supports can no longer fully meet the requirements of thick and extra-thick coal seam mining. Under suitable conditions, combined with the top-coal caving mining process, the top-coal caving transition support frame type is improved. , to provide equipment guarantee for safe and efficient fully mechanized mining

[0003] The top-coal caving transition bracket is used for the transition section of the head and tail of the fully-mechanized top-coal caving face. It should provide a safe working space for the front and rear transition sections of the scraper conveyor. Some reducers and motors are large in size, and the driving parts of the front and rear scraper conveyors generally need to be arranged in parallel, which takes up a lot of space. Therefore, the reverse four-link frame transition hydraulic support is generally used instead of the positive four-link frame. Hydraulic support, although this type of frame can provide cover space for the front and rear scraper conveyors, but limited by the characteristics of the frame structure, there is not enough pedestrian space, the top beam is long, the support strength is low, and the whole frame is heavy, especially In the case of large working resistance, the support is limited by the four-link structure, the strength is low, the stability is poor, and the ventilation section of the support is small. Especially in the conditions of large mining and high caving coal face or high gas mine, it is difficult to meet the requirements of coal mine safety production regulations

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