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AC hydraulic impact shearer

A hydraulic shock and shearer technology, applied in cutting machinery, earth drilling, slitting machinery, etc., can solve problems such as low lump coal rate, large vibration of parts and machine body, limited product value, etc., and achieve coal The effects of comprehensive quality improvement, power reduction and energy saving

Active Publication Date: 2017-03-29
TZ COAL MINE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The drum shearer uses the drum to break coal, which has a negative effect on the coal during the operation process, resulting in a low rate of lump coal and limited product value.
[0005] 2. Since the purely mechanical straight-flush shearer transmits action and reaction forces from rigid to rigid, it vibrates the components and the body greatly, resulting in low reliability of the whole machine, unable to form continuous and effective operations, and unable to convert into commercially valuable interests

Method used

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Embodiment Construction

[0020] figure 1 It is the principle diagram of the present invention, which consists of fuel tank, reducer, AC generator, motor, AC hydraulic cylinder, safety valve and liquid replenishing device, electromagnetic reversing valve, hydraulic lock, right rotating oil cylinder, manual hydraulic reversing valve, left rotating The oil cylinder, the hydraulic system of the original drum shearer, etc., the system is divided into two parts, one part is the AC hydraulic shock working hydraulic system, the power of the motor 15 is transmitted to the AC generator 4 after being decelerated by the reducer 3, and the AC generator is a The two plunger cylinders driven by the double crankshaft have a phase difference of 180°, such as figure 1 , 2 Shown is the b1 impact AC hydraulic action cylinder piston drives a row of tool holders to impact upwards, and b2 AC action cylinder piston drives the other row of tool holders to impact down the liquid flow direction (in actual use, the two rows of ...

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Abstract

The invention discloses a coal exploitation device, and particularly relates to an alternative-current hydraulic impact type coal cutter which comprises a barrel coal cutter body, a traction part and rocker arms, wherein one end of each rocker arm is hinged to the barrel coal cutter body; the rocker arms are further connected with height adjusting cylinders; the other ends of the height adjusting cylinders are fixed on the barrel coal cutter body; an alternative-current hydraulic impact part is hinged to each rocker arm at each end of the barrel coal cutter body. By adopting the alternative-current hydraulic impact type coal cutter, the blocking rate of raw coal production can be greater than 70% and can be increased by 40% when being compared with that of a conventional barrel type coal cutter, and the comprehensive quality of coal is also greatly improved.

Description

technical field [0001] The invention belongs to a coal mining device, in particular to an AC hydraulic impact coal shearer. Background technique [0002] Shearer is one of the important equipment to realize the mechanization and modernization of coal mine production. Mechanized coal mining can reduce physical labor, improve safety, and achieve high output, high efficiency, and low consumption. [0003] The coal mining machine is a large and complex system integrating machinery, electricity and hydraulic pressure. The working environment is harsh. If a failure occurs, the entire coal mining work will be interrupted, resulting in huge economic losses. With the development of the coal industry, coal mining The machine has more and more functions, and its own structure and composition are becoming more and more complicated, so the reasons for the failure are also complicated. [0004] 1. The drum shearer uses the drum to break coal, which has a negative effect on the coal duri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C25/52E21C31/02
CPCE21C25/52E21C31/02
Inventor 李维伟刘混举丁志勇王宝孙弋婷刘泽平闫鹏飞周翔鲍师云崔志斌李瑞峰樊超
Owner TZ COAL MINE MACHINERY