Telescopic machine tail self-adaptive adjustment electro-hydraulic composite control system and method

An adaptive adjustment, electro-hydraulic composite technology, applied in the direction of general control system, control/regulation system, electrical program control, etc., can solve problems such as too loose or too tight, to increase effective power, reduce loss, and improve equipment start-up rate effect

Inactive Publication Date: 2019-08-16
TAIYUAN INST OF CHINA COAL TECH & ENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the tension force of the chain is always in the optimal tension state, make the chain mesh with the sprocket normally, prevent the chain from being too loose or

Method used

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  • Telescopic machine tail self-adaptive adjustment electro-hydraulic composite control system and method

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Embodiment Construction

[0020] The present invention adopts the following technical solutions: an electro-hydraulic compound control system and strategy for self-adaptive adjustment of a retractable tail, which features a PLC calculation control center 1, stroke signal transmission line I2, stroke signal transmission line II3, and pressure signal transmission line I4 , Pressure signal transmission line Ⅱ5, pressure sensor Ⅰ6, tensioning cylinder Ⅰ7, stroke sensor Ⅰ8, chain 9, retractable tailstock 10, stroke sensor Ⅱ11, tensioning cylinder Ⅱ12, pressure sensor Ⅱ13, safety valve Ⅰ14, pressure gauge 15 , Double hydraulic control check valve 16, overflow valve 17, speed control valve Ⅰ18, reversing solenoid valve Ⅰ19, stop valve Ⅰ20, stop valve Ⅱ21, filter 22, reversing solenoid valve Ⅱ23, speed control valve Ⅱ24 and safety valve II 25.

[0021] The pressure sensor I6 and the pressure sensor II13 are respectively arranged between the piston rodless chamber side of the tensioning cylinder I7 and the tens...

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Abstract

The present invention relates to the technical field of equipment design and manufacture of coal mine underground fully mechanized mining face, in particular to a telescopic machine tail self-adaptiveadjustment electro-hydraulic composite control system and method. A piston rod of the tensioning cylinder I and a piston rod of the tensioning cylinder II are connected with a telescopic machine tailframe, a travel sensor I and a travel sensor II are respectively arranged inside the piston rod of the tensioning cylinder I and inside the piston rod of the tensioning cylinder II, the travel sensorI and the travel sensor II are respectively connected with a PLC calculation control center through a travel signal transmission line I and a travel signal transmission line II, the tensioning cylinder I and the tensioning cylinder II are connected with a double-hydraulic-control one-way valve, a pressure sensor I and a pressure sensor II are respectively arranged on a pipeline which is connectedwith the tensioning cylinder I and the tensioning cylinder II and the double-hydraulic-control one-way valve, and the pressure sensor I and the pressure sensor II are respectively connected with thePLC calculation control center through a pressure signal transmission line I and a pressure signal transmission line II. The system and method is safe and reliable, has a simple mechanism, and adoptsmicrocomputer control and information feedback.

Description

technical field [0001] The invention belongs to the technical field of equipment design and manufacture of underground fully mechanized mining face in coal mines, and in particular relates to an electro-hydraulic compound control system and method for self-adaptive adjustment of a retractable machine tail. Background technique [0002] Conveyor is one of the key equipment in fully mechanized coal mining face. Its main components include nose frame, chute, scraper chain, telescopic tail frame and transmission device, etc. The coal is transported by chains installed with scrapers. The main function of the conveyor is that the shearer rides on the conveyor as the running track of the shearer and runs reciprocatingly; the second is to transport the coal cut by the shearer; the third is to serve as the fulcrum for the push-pull movement of the hydraulic support. [0003] Factors such as the reciprocating speed of the shearer on the conveyor, the running distance, the movement of...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCG05B19/058
Inventor 周开平张学荣王学成张明秀石涛桑盛远姜翎燕张洮王赟侯林徐志刚张君
Owner TAIYUAN INST OF CHINA COAL TECH & ENG GROUP
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