Lowing control system for movable arm of hydraulic excavator for mines

A technology of control system and mobile arm, which is applied in the direction of mechanically driven excavators/dredgers, etc., can solve the problems of energy waste, failure to impact energy utilization, etc., and achieve the effects of improving work efficiency, reducing heat generation, and accelerating decentralization

Active Publication Date: 2011-06-22
TAIYUAN HEAVY IND
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a hydraulic excavator arm lowering control system for mining, to solve the problem that the existing h

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
  • Lowing control system for movable arm of hydraulic excavator for mines
  • Lowing control system for movable arm of hydraulic excavator for mines
  • Lowing control system for movable arm of hydraulic excavator for mines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Such as figure 2 As shown, a mining hydraulic excavator arm lowering control system consists of a left diverter block 1, a right diverter block 2, a left one-way throttle valve 3, a left boom cylinder 4, a safety valve 5, and a right movable arm cylinder. The main pressure oil circuit composed of the arm cylinder 6, the right one-way throttle valve 7 and the hydraulic pipeline, and the remote control valve 8, the electromagnetic switching valve 9, the left boom cylinder one-way valve 10, and the left boom cylinder regeneration valve 11. The right boom cylinder regeneration valve 12, the right boom cylinder one-way valve 13, the oil tank 14 and the pilot control oil circuit composed of hydraulic pipelines are composed of two parts.

[0012] The specific connection of the main pressure oil circuit is: the main pressure oil from the A port is connected to the rod chambers of the left boom cylinder 4 and the right boom cylinder 6 through the pipeline at the same time; the ...

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 lowering control system for a movable arm of a hydraulic excavator for mines, and relates to a hydraulic excavator. The system solves the problems that the prior art can only control the lowering speed of the movable arm and cannot utilize the impact energy generated by dead weight so as to cause energy waste. The system consists of a main pressure oil passage and a pilot control oil passage, wherein the main pressure oil passage consists of a left shunt block, a right shunt block, a left one-way throttling valve, a left movable arm cylinder, a safety valve, a right movable arm cylinder, a right one-way throttling valve and a hydraulic pipeline; and the pilot control oil passage consists of a remote control valve, an electromagnetic switching valve, a left movable arm cylinder one-way valve, a left movable arm cylinder regeneration valve, a right movable arm cylinder regeneration valve, a right movable arm cylinder one-way valve, an oil tank and a hydraulic pipeline. In the process of lowering the movable arm, the impact energy generated by lowering due to the dead weight of the movable arm is fully utilized for regeneration, so energy is saved, heating of a hydraulic system is reduced, lowering of the movable arm is quickened, and the work efficiency of the hydraulic system of the hydraulic excavator for mines is improved.

Description

technical field [0001] The invention relates to a hydraulic excavator, in particular to a control system for lowering the arm of the mining hydraulic excavator. Background technique [0002] Mining hydraulic excavators are widely used in large open-pit mines, and the boom is an important part of hydraulic excavators. When the boom is lowered, the boom will drop rapidly due to its own weight, and the boom will be damaged if it falls too fast. In the hydraulic system of the mining hydraulic excavator, the boom cylinder is responsible for the lifting and lowering of the boom. Therefore, in order to realize the controllable lowering speed of the boom, buffer elements such as balance valves and one-way throttle valves are added to the hydraulic system of the existing mining hydraulic excavator, so that the boom can be lowered safely and reliably. [0003] The boom lowering control system of the prior art is as figure 1 As shown, the system includes: left diverter block 1, righ...

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
IPC IPC(8): E02F3/43
Inventor 吕晓林
Owner TAIYUAN HEAVY IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap