Shock absorbing device for coal mining machine

Abstract

The invention discloses a shock absorbing device for a shearer used in a coal mine, which comprises a fuselage, the end of the fuselage is movably connected with a rocker, the rocker is movably connected with a cylinder, and the other end of the cylinder is movably socketed. There is a piston rod; through the energy-absorbing device, the vibration energy received by the rocker arm is weakened many times and then transmitted to the fuselage, the vibration energy received by the fuselage is greatly reduced, and the vibration generated by the fuselage is more peaceful. It helps to extend the service life of mechanical gears, bearings and other components, and effectively reduces the adverse effects on the connection performance of the whole machine and the anti-loosening performance of electrical components in the electric control box. Through the cooperation of the fuselage, transfer device and energy-absorbing device, the The roller on the rocker arm can pass over the super-hard rock, avoiding the problem that the pick on the roller directly cuts the super-hard rock forcibly and wears out quickly, prolongs the service life of the pick, reduces the replacement frequency of the pick, and increases the Coal mining efficiency is improved, and the practicability of the shock absorbing device for the shearer used in the coal mine is improved.

Description

technical field [0001] The invention relates to the field of coal mining machines, and more specifically relates to a shock absorbing device for coal mining machines used in coal mines. Background technique [0002] Shearer is one of the important equipments to realize the mechanization and modernization of coal mine production. Mechanized coal mining can reduce physical labor, improve safety, and achieve the purpose of high output, high efficiency and low consumption. The pick on the top cuts the coal wall. The coal loading of the shearer is loaded through the helical surface of the helical blade of the drum. The axial thrust of the helical blade is used to throw the coal cut from the coal wall to the scraper. It is a large and complex system integrating machinery, electricity and hydraulic pressure. The shearer is composed of picks, rollers, fuselage and rocker arm. The fuselage and rocker arm of the shearer The connection adopts a hinged structure, and the height of the ...

AI Technical Summary

Problems solved by technology

[0003] However, when the shearer cuts coal underground, especially when the pick cuts coal or rock with relatively high hardness, the shearer will generate a lot of vibration, and the vibration force is mainly transmitted from the shearer drum to the rocker arm. , the rocker arm transmits the vibration to the whole machine through its hinged structure with the fuselage, causing the fuselage to vibrate violently. If the vibration amplitude is too large, it will not only shorten the service life of mechanical gears, bearings and other components, but also affect the connection performance of the whole machine and The anti-loose performance of the electrical components in the electric control box, and at the same time, when encountering superhard rocks in the coal mining process, the wear speed of the pick will be accelerated, the frequency of pick replacement will be increased, and the coal mining efficiency will be reduced. Therefore, it is urgent to design a Shock absorbing device for shearer used in coal mine

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