Shearer Height Adjustment System Simulation Loading Test Bench
A technology of loading test and system simulation, which is applied to the testing of machines/structural components, measuring devices, instruments, etc., can solve the problems that the cutting medium cannot be changed randomly, and achieve outstanding functions, simple methods, easy installation and operation Effect
Inactive Publication Date: 2015-09-09
XUZHOU NORMAL UNIVERSITY
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Problems solved by technology
Therefore, in the current experimental research, the simulation method of the cutting load of the shearer drum needs to be improved, and these methods cannot realize random changes among various cutting media
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[0011] Such as figure 1 As shown, the shearer drum height adjustment system simulated loading test bench includes two parts: the oil circuit hydraulic system of the left pump unit 5 and the oil circuit hydraulic system of the right pump unit 14. The left and right parts of the test bench are connected together through the connecting device 8; Controller 1, proportional overflow valve 2, oil tank 3, filter 4, left pump unit 5, reversing valve 6, loading cylinder 7, connecting device 8, differential pressure sensor 9, displacement sensor 10, analog height adjustment cylinder 11 , two-way hydraulic lock 12, reversing valve 13, right pump unit 14, overflow valve 15 and filter 16. The oil absorbed by the left pump unit 5 enters the loading cylinder 7 through the oil tank 3, the filter 4 and the reversing valve 6, and loads the simulated height adjustment oil cylinder 11. The oil suction liquid of the right pump unit 14 enters the simulated height adjustment oil cylinder 11 through...
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The invention discloses a loading simulation test bed for a coal cutter lifting system and belongs to the field of coal cutter test beds. The loading simulation test bed for the coal cutter lifting system comprises a left pump unit oil circuit hydraulic system and a right pump unit oil circuit hydraulic system. Oil pumped by a left pump unit enters a loading cylinder through an oil tank, a filter and a reversing valve, and a lifting simulation cylinder is loaded. The oil pumped by a right pump unit enters the lifting simulation cylinder through the oil tank, the filter, the reversing valve and a bidirectional hydraulic lock, and an oil cylinder is driven to move. A cylinder differential pressure sensor is arranged on the test bed, differential pressure signals which are given signals are outputted to the input end of the controller, and the controller is used to control for programmable continuous dynamic simulation of roller load condition. A cylinder displacement sensor is also arranged on the test bed, and the output of the sensor also serves as the input of the controller. The left pump unit oil circuit hydraulic system and the right pump unit oil circuit hydraulic system are connected together through a connecting device. The loading simulation test bed for the coal cutter lifting system is applicable to simulation of the search on coal cutter coal-rock interface recognition and roller lifting performance testing.
Description
technical field [0001] The invention relates to a simulated loading test bench for a coal shearer height adjustment system, which belongs to the field of coal shearer test benches. It is especially suitable for studying coal-rock interface recognition experiments of shearers and drum adjustment performance experiments. Background technique [0002] Shearer is one of the key equipment in fully mechanized mining face, and its automatic control is the key to realize the automatic control of the whole working face. The bottleneck technology to realize automatic control of shearer is drum automatic height adjustment and coal-rock interface automatic identification technology. Now, with the development of science and technology, the shearer drum height adjustment and coal-rock interface automatic recognition technology based on memory cutting control technology have appeared. This technology largely solves the real-time problem of automatic recognition of the coal-rock interface,...
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IPC IPC(8): G05D3/12G01M99/00
Inventor 苏秀平
Owner XUZHOU NORMAL UNIVERSITY