Rolling body

Abstract

The invention relates to a rolling body. The rolling body is a bucket-shaped structural part, the ends where a shovel opening and a shovel back are located are called the far end and the near end correspondingly, the working face of a body of the rolling body is a smooth space curved surface with the inwards-recessed middle, the height of the working face of the body is gradually increased from the far end to the near end, and the portion, close to the far end, of the working face of the body is a smooth concave curved surface with the front portion lower than the rear portion; the portion, close to the near end, of the working face of the body is a smooth concave curved surface with the front portion higher than the rear portion, the bottom face of the body is located above a rail of a conveyor, a top eave overhung from the near end to the far end is arranged on the upper portion of the rolling body, and the length of the top eave in the left-and-right direction is gradually increasedfrom back to front starting from zero and smaller than the total left-and-right length of the working face of the body; and the lower surface of the top eave is a part of the working face of the body, and the side face of the overhung end of the top eave is a vertical surface. The rolling body is used in cooperation with a protective net, blocky mineral aggregate with the size larger than a certain size can be prevented from entering rail tooth sockets, and rapid abrasion and crushing of a walking meshing system by the blocky mineral aggregate are avoided from the source.

Description

technical field [0001] The invention relates to a tool for automatically turning over the protective net. The protective net is covered on the walking track of the mining machine, which can prevent the blocky mineral material from entering the tooth socket of the track from hindering the walking of the mining machine and causing serious wear and tear of the walking meshing system of the mining machine. The purpose of the protection net is to prevent the passage of mining machines from being obstructed by the protection net in a covered state, and belongs to the technical field of underground mining machinery. Background technique [0002] When the drum type mining machine is used to mine high-hardness mineral materials, the reaction force (especially impact) generated by cutting hard mineral materials has a great influence on the walking meshing system of the mining machine, and the larger ore has a greater impact on the mining machine walking meshing system. The greater the...

AI Technical Summary

Problems solved by technology

[0002] When the drum type mining machine is used to mine high-hardness mineral materials, the reaction force (especially impact) generated by cutting hard mineral materials has a great influence on the walking meshing system of the mining machine, and the larger ore has a greater impact on the mining machine walking meshing system. The greater the impact, such as Figure 13 As shown, especially high-hardness and large-sized mineral materials cannot be crushed and discharged after entering the track tooth socket, and the traveling gear teeth are too late to break the rock blocks, resulting in serious wear of the guide shoe (such as the bottom hook part of the guide shoe) of the mining machine, which in turn leads to Severe wear and crushing of the walking meshing system, significantly shortened service life, and significantly longer time required for troubleshooting, seriously affecting the economics of mining

[0003] In response to the above problems, the industry has proposed increasing the thickness and length of the wear-resistant layer on the contact surface of the guide shoe of the mining machine, and at the same time taking further surface hardening measures on the contact surface of the track. Although these measures have improved and enhanced the walking performance of the existing mining machine to a certain extent The service life of the meshing system, but the above problems have not been fundamentally resolved, and still affect the walking speed of the mining machine, which is still an important factor restricting production capacity and economical mining

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