Unlock instant, AI-driven research and patent intelligence for your innovation.

Hydraulic support PLC (programmable logic controller) electric hydraulic control system

An electro-hydraulic control system and hydraulic support technology, applied in mine roof support, mining equipment, earthwork drilling and other directions, can solve the problems of late development of hydraulic support and the need to continue to improve reliability, so as to reduce external interference factors and improve The effect of operating efficiency and improving operating speed

Inactive Publication Date: 2017-05-24
纪新辉
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of domestic electro-hydraulic control hydraulic supports is relatively late, and the reliability needs to be further improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydraulic support PLC (programmable logic controller) electric hydraulic control system
  • Hydraulic support PLC (programmable logic controller) electric hydraulic control system
  • Hydraulic support PLC (programmable logic controller) electric hydraulic control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with drawings and embodiments.

[0020] Such as figure 1 , The working process of the hydraulic support is mainly divided into actions such as lifting, pushing, lowering, and moving. Pushing is a relatively complicated operation. Its program segment design is relatively lengthy. Because the pushing action needs to check whether the hydraulic support supports the top plate first, if the top plate is not supported, the lifting operation needs to be performed, and then the pushing operation is performed.

[0021] Such as figure 2 , the PLC program adopts a modular design method and is completed by calling a subroutine from the main program. This will not only reduce the complexity of the program, but also make debugging and maintenance easier. The stroke detection of the oil cylinder and the movement of the frame are all designed into corresponding subroutine modules.

[0022] The Siemens S7-200 pro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a hydraulic support PLC (programmable logic controller) electric hydraulic control system. PLC programs adopt a modular design method, and main programs call subprograms. Analog signals are processed by means of multi-sampling averaging, and the influence of external interference factors is decreased. Besides, the running speed of the programs is increased by a shifting substitute division operation method. A support is frequently in a supporting state, pressure values are higher than set pressure, and the running efficiency of the system is improved by the design method of separating pressure detection and support lifting action.

Description

technical field [0001] The invention relates to a PLC electro-hydraulic control system for a hydraulic support, which is suitable for the mechanical field. Background technique [0002] The hydraulic support is a fully mechanized mining face support equipment that is powered by high-pressure emulsion and can move by itself. The hydraulic support has high reliability, good horizontal and vertical stability, strong adaptability to the roof, and fast and convenient support. specialty. In order to improve production efficiency, improve the working environment of workers, and reduce the labor intensity of workers, electro-hydraulic control hydraulic supports began to appear abroad in the 1990s and developed rapidly. The development of domestic electro-hydraulic control hydraulic supports is relatively late, and the reliability needs to be further improved. The average time between failures of Siemens S7-200PLC controller can reach 30,000 to 50,000 hours. Try to use high-reliabi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/12
Inventor 纪新辉
Owner 纪新辉