Cantilever type heading machine for coal mining

A cantilever roadheader and coal mine technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of high cutting tooth wear speed, easy distortion and deformation of cutting teeth, and reduce the working efficiency of roadheader, and achieve wear and tear. The effect of slow speed and improved work efficiency

Pending Publication Date: 2019-04-02
TENGZHOU JINDA COAL CO LTD
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  • Abstract
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Problems solved by technology

[0003] 1. The cutting tooth and the cutting seat are connected by a fixed snap ring, and the cutting tooth is fixed, so that the cutting amount of the cutting tooth cannot be appropriately changed according to the hardness of the inner wall of the roadway. Hard rock formations are cut and broken, and the cutting teeth wear out quickly, requiring frequent shutdowns to replace the cutting teeth, which reduces the working efficiency of the roadheader
[0004] 2

Method used

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  • Cantilever type heading machine for coal mining
  • Cantilever type heading machine for coal mining
  • Cantilever type heading machine for coal mining

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[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] See Figure 1-5 , A cantilever type roadheader used for coal mine development, comprising a connecting seat 1, a cutting seat 2 is provided on the top of the connecting seat 1, and an inner wall of the cutting seat 2 is connected with an elastic member 3, which is in a compressed state , The other end of the elastic member 3 is provided with a piston plate 4, the outer edge of the piston plate 4 is slidably connected with the inne...

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Abstract

The invention relates to the technical field of coal mining equipment, and discloses a cantilever type heading machine for coal mining. The cantilever type heading machine includes a connecting seat,a cutting seat is arranged at the top of the connecting seat, and the inner wall of the cutting seat is connected with an elastic part. The inner wall of a feed control groove is inclined, when cutting teeth are subjected to huge axial force in the left direction, a movable part provides radial force for a feed clamping ring for radial deformation, the inner space of the feed clamping ring is enlarged and separated from the feed control groove, the movable part can move to the left inside the feed clamping ring, then the cutting teeth automatically slide into the cutting seat, the feed amountof the cutting teeth is reduced, and the purpose of changing the feed amount of the cutting teeth is realized according to the hardness of a roadway inner wall rock layer and a coal seam; and the feedamount of the cutting teeth can be changed, the cutting teeth can conduct cutting and breaking according to layers with different hardness, the wear rate of the cutting teeth is low, frequent shutdown is not required to replace the cutting teeth, and the working efficiency of the heading machine is improved.

Description

technical field [0001] The invention relates to the technical field of coal mining equipment, in particular to a cantilever roadheader for coal mining. Background technique [0002] The cantilever type roadheader is an engineering machine for digging roadways in coal mining. It is mainly composed of cutting mechanism, loading mechanism, transportation mechanism, walking mechanism, frame and rotary table, hydraulic system, electrical system, cooling dust removal water supply system and operation control system, etc. The cutting mechanism is composed of a transmission shaft, a cutting head, etc. The cutting head includes a cutting head body, a cutting seat and cutting teeth. The surface of the cutting head body is installed with a cutting seat in a welded or bolted form. Cutting teeth are installed on the cutting block through a fixed snap ring, such as Figure 5 As shown, but this installation method between the cutting seat and the cutting teeth still has the following probl...

Claims

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Application Information

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IPC IPC(8): E21D9/10
CPCE21D9/1006E21D9/104
Inventor 董洪青
Owner TENGZHOU JINDA COAL CO LTD
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