Rotary-digging type coal mining machine and development machine cutting part

Abstract

A rotary-digging type coal mining machine and development machine cutting part comprises a speed reducer, a cutting arm and a cutting head. The speed reducer comprises a two-level planet mechanism, a coupling band and a speed reducer output shaft. The cutting arm comprises a cutting arm main shaft and a cutting arm shell. The cutting head comprises a screw hole drill, cutting teeth, a reamer, an eccentric disc, a pinion, a cutting head main shaft, a bearing block, a planet wheel assembly and an annular gear, wherein the front end of the screw hole drill and the top end of the reamer are welded with the cutting teeth. During work, a motor transmits power to the cutting arm main shaft through the two-level planet mechanism of the speed reducer, and transmits power simultaneously to a cutting head planet mechanism and the pinion through the cutting head main shaft to enable the screw hole drill to cut. Simultaneously, the pinion drives the eccentric disc to rotate to enable the reamer to rotate around the center of the cutting head main shaft and be in reciprocating motion along the radial direction. Therefore, an outline similar to an oval is cut out. The structure is simple and compact in entire mechanism, a user can lead the cut cross section to be in a shape similar to an oval, simultaneously lump coal rate is led to increase, energy consumption is lowered, and dust is reduced.

Description

technical field [0001] The invention relates to a cutting part of a rotary digging coal mining machine and a roadheader, and is especially suitable for the cutting mechanism of the coal mining machine and the roadheader which basically form a horizontal bottom and a parallel top when cutting rocks. technical background [0002] With the development of mechanized tunneling technology in coal mine underground tunnels, the constantly updated mechanized tunneling tools still cannot meet the needs of production. Because the roadheader has a lot of dust when it is working, it is impossible to break the rock into pieces, which increases the specific energy consumption and the work efficiency is low; at the same time, due to the large dust of the working flour, it not only affects the health of the workers, but also the excessive dust It can also cause serious accidents. Second, consider that drilling or rotary drilling is a well-known mining process where first the front cutting h...

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Problems solved by technology

This creates a lot of trouble for the manufacture and production of the product as well as mining

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