Double height adjusting system for coal cutter

A shearer and height adjustment technology, which is applied in the direction of earthwork drilling, cutting machinery, driving devices, etc., can solve the problems of coal shearer shutdown accidents, affecting the use efficiency of coal shearers, low integration level, etc., and achieve improved The effect of coal output

Inactive Publication Date: 2012-03-14
XIAN COAL MINING MACHINERY
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to the backward technology of the main hydraulic components such as single hand, hydraulic control valve or hand, hydraulic control multi-way valve, solenoid valve, etc., the size of the valve is large and the level of integration is low, resulting in a large volume of the pump box, which is very difficult. Difficult to achieve separate control of the left and right rocker arms
Due to the harsh environmental conditions in coal mines, the above-mentioned valves have a high failure rate during use. Once a failure occurs, it cannot be quickly repaired on the underground working face, which will cause the entire shearer to shut down.
The existing shearer height adjustment braking hydraulic system cannot realize the simultaneous lifting of the left and right rocker arms, which affects the efficiency of the shearer

Method used

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  • Double height adjusting system for coal cutter
  • Double height adjusting system for coal cutter
  • Double height adjusting system for coal cutter

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Embodiment Construction

[0016] The shearer height adjustment and brake hydraulic transmission system of the present invention adopts one shearer to realize left and right rocking of the shearer by two identical height adjustment pump boxes and two sets of identical hydraulic transmission systems and components. The independent control of the arm height, that is, the left and right rocker arms can be operated at the same time. At the same time, each set of hydraulic transmission system has the ability to control the height adjustment of the left and right rocker arms and the braking of the shearer. Therefore, when one set of systems fails, there is no need to stop for maintenance. The system controls the shearer without affecting production.

[0017] figure 2 Schematic diagram of the shearer double height adjustment system of the present invention, such as figure 2 As shown, the drum shearer controls the hydraulic cylinder through the height adjustment pump box arranged in the main body of the she...

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Abstract

A double height adjusting system for a coal cutter comprises two height adjusting pump boxes, two identical hydraulic transmission systems, two hand-operated reversing valves and two height adjusting oil cylinders so as to control left and right rocking arms of the coal cutter. The invention is characterized in that the two height adjusting pump boxes can respectively control their respective hydraulic transmission systems so as to adjust the height of the left and right rocking arms of the coal cutter under normal operating conditions; and if there is any malfunction of one of the two height adjusting pump boxes and / or its corresponding hydraulic transmission system, the height adjusting pump box and its corresponding hydraulic transmission system which are not malfunctioning can be used to control the left and the right rocking arms of the coal cutter.

Description

Technical field: [0001] The invention relates to the technical field of coal shearers, in particular to a double height adjustment system for rocker arms of coal shearers. Background technique: [0002] like figure 1 As shown, the existing shearer height adjustment and braking hydraulic transmission system is controlled by a height adjustment pump box 1 and a set of hydraulic transmission system to control the height adjustment of the left and right rocker arms and the braking of the shearer. Due to the backward technology of the main hydraulic components such as single hand, hydraulic control valve or hand, hydraulic control multi-way valve, solenoid valve, etc., the size of the valve is large and the level of integration is low, resulting in a large volume of the pump box, which is very difficult. It is difficult to realize the independent control of the left and right rocker arms. Due to the harsh environmental conditions in coal mines, the above-mentioned valves have a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C31/08
Inventor 白西训张永权
Owner XIAN COAL MINING MACHINERY
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