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Cutting mechanism of thin seam mining machine

A technology for coal shearers and thin coal seams, which is applied in the direction of cutting machinery, slitting machinery, earthwork drilling and mining, etc. It can solve the problems of small mining height of the rear drum, large impact of force on the whole machine, and heavy weight, and achieve reduction wear, improve transmission accuracy, and simplify the structure

Pending Publication Date: 2022-04-26
SHANGHAI TIANDI MINING EQUIP TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the rear rocker arm of the thin coal seam suspension body shearer picks the upper knife, there will be a problem that the mining height of the rear drum is too small. The reason is that when the mining height increases, the cutting motor of the rear rocker arm will It will interfere with the upper coal platform left behind the bottom cutting knife of the front drum, so the overall mining height of this kind of shearer is too narrow to meet the mining requirements of my country's thin coal seam working face with large changes in seam thickness
[0003] In response to the above problems, the industry once proposed to divide the cutting part into a swing part and a fixed part, and set the cutting motor and the main body of the cutting transmission system in the fixed part, resulting in the structure of the fixed part being too complicated, and the left and right lengths of the overhanging section of the fuselage are skewed. Long and heavy, the problem of the center of gravity of the whole machine still has a great influence on the force of the whole machine
In addition, the shearer with a long body structure cannot perform the straight-feeding knife process similar to the short-wall shearer, and the oblique cutting at both ends takes a long time, which limits the mining efficiency to a certain extent.

Method used

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  • Cutting mechanism of thin seam mining machine
  • Cutting mechanism of thin seam mining machine
  • Cutting mechanism of thin seam mining machine

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Embodiment Construction

[0039] The invention discloses a cutting mechanism of a thin coal seam shearer (which may be referred to simply as a cutting mechanism), such as Figure 1-8 As shown, it includes a cutting motor 3, a swing arm housing 1, and a main body housing 2. The swing arm housing and the main body housing are hinged with the cutting motor 3 as a pin shaft, and the cutting motor is relative to the main body housing. Fixed, swing relative to the swing arm housing. By using the cutting motor as a pin shaft, the left and right lengths of the main body casing are shortened, which is equivalent to shortening the left and right lengths of the suspension body section of the shearer, and the structure of the cutting mechanism is simplified.

[0040]The main body of the swing arm housing is an arm frame 113 extending left and right, and a cutting transmission mechanism 12 is installed in the arm frame. The cutting transmission mechanism adopts the fixed shaft gear transmission mechanism. In orde...

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Abstract

The invention relates to a cutting mechanism of a thin seam mining machine, which is characterized in that a swing arm shell is hinged with a main body shell by taking a cutting motor as a pin shaft, the cutting motor is fixed relative to the main body shell, the main body of the swing arm shell is an arm frame extending left and right, and a connecting arm overhanging forwards from the arm frame is arranged in the middle of the arm frame; a front arm and a rear arm which overhang leftwards or rightwards are arranged on the connecting arm, the front arm, the rear arm and the high-speed end of the arm frame are sequentially arranged at intervals from front to back, the front arm and the rear arm are hinged to a first lug base, a second lug base and a third lug base on the front portion of the main body shell, and loads from the roller are transmitted to the main body shell. An input end gear of a cutting transmission mechanism installed in the high-speed end of the arm frame is in coaxial transmission connection with an output shaft of the cutting motor, a height adjusting oil cylinder is arranged in an inner cavity in the front portion of the main body shell, and the two ends of the height adjusting oil cylinder are hinged to the front arm and the main body shell respectively. A large mining range can be provided, the machine body can be shortened, and the gravity center of the coal mining machine is improved.

Description

technical field [0001] The invention relates to a shearer cutting mechanism, which is especially suitable for the thin coal seam shearer, and can provide the thin coal seam shearer with a larger mining range and larger cutting power. Background technique [0002] On the existing thin coal seam shearer, the cutting motor is usually located on the rocker arm and swings with the swing of the rocker arm. When the rear rocker arm of the thin coal seam suspension body shearer picks the upper knife, there will be a problem that the mining height of the rear drum is too small. The reason is that when the mining height increases, the cutting motor of the rear rocker arm will It will interfere with the upper coal platform left behind the bottom cutting knife of the front drum, so the overall mining height of this kind of shearer is too narrow, and cannot adapt to the mining requirements of large changes in seam thickness in thin coal seam working faces in my country. [0003] In respo...

Claims

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Application Information

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IPC IPC(8): E21C35/00E21C25/06
CPCE21C35/00E21C25/06
Inventor 王振乾章立强郭岱胡璟胡滔钱立全董超顾恩洋马旭
Owner SHANGHAI TIANDI MINING EQUIP TECH CO LTD
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