Supercharge Your Innovation With Domain-Expert AI Agents!

Quantitative system variable hydraulic system

A hydraulic system and system variable technology, applied in the direction of fluid pressure actuating device, servo motor, servo motor assembly, etc., can solve the problem of high work efficiency and energy consumption, reduce energy consumption, improve work efficiency and high energy consumption Effect

Pending Publication Date: 2019-12-17
XCMG CONSTR MACHINERY
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a hydraulic system with a variable quantitative system, which solves the problems of high working efficiency and energy consumption of the hydraulic system of existing engineering vehicles

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
  • Quantitative system variable hydraulic system
  • Quantitative system variable hydraulic system
  • Quantitative system variable hydraulic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] combine figure 1 As shown, a hydraulic system with variable quantitative system:

[0043] It includes a steering hydraulic cylinder 7 for driving the steering of the wheels, a second hydraulic pump 10 for providing hydraulic fluid to the steering hydraulic cylinder 7, a steering gear 8 for controlling the movement of the steering hydraulic cylinder 7, and providing priority for the steering gear 8. Priority valve 9 for flow rate.

[0044] The steering gear 8 has a first state in which the piston rod of the steering hydraulic cylinder 7 is extended and a second state in which the piston rod of the steering hydraulic cylinder 7 is retracted. The rodless chamber of the steering hydraulic cylinder communicates with the L port of the steering gear 8, and the rod chamber communicates with the R port of the steering gear 8. Therefore, when the piston rods of the two steering hydraulic cylinders extend, the piston of the other steering hydraulic cylinder The rod is retracted,...

Embodiment 2

[0079] The difference between the second embodiment and the first embodiment is:

[0080] combine image 3 As shown, the control unloading valve 22 in the variable variable control valve 3 in the first embodiment is removed;

[0081] It works as follows:

[0082] When the working hydraulic cylinder 5 has no action or the load pressure is less than the predetermined value △P1;

[0083] The load pressure acts on the right end of the buffer valve 61 through the damping part IV62, the force of the spring I64 at the left end of the buffer valve 61 is greater than the load pressure, and the buffer valve 61 is in the first position, so that the fluid generated by the first hydraulic pump 2 passes through the variable control valve first. Outlet T flows to hydraulic tank 1. The effect is to make the first hydraulic pump 2 variable, avoiding the first hydraulic pump 2 and the second hydraulic pump 10 both working under high-power conditions, which is conducive to reducing the energy...

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 quantitative system variable hydraulic system, and belongs to the technical field of engineering machinery. The quantitative system variable hydraulic system comprises a working hydraulic cylinder for driving an operation part to move, a multi-way valve for controlling the working hydraulic cylinder to move, a working hydraulic pump which comprises a first hydraulic pumpand a second hydraulic pump for providing hydraulic fluid for the working hydraulic cylinder, a priority valve communicating with the second hydraulic pump, and a variable control valve communicatingwith the first hydraulic pump, the priority valve and the multi-way valve. According to the quantitative system variable hydraulic system, when the load pressure of the working hydraulic cylinder is smaller than the preset value delta P1 or larger than the preset value delta P2, hydraulic liquid discharged by the first hydraulic pump directly flows back to a hydraulic fluid box instead of being conveyed to the working hydraulic cylinder; through the hydraulic system, the situation that the first hydraulic pump and the second hydraulic pump both operate at the high-power working state can be avoided, and energy consumption of the hydraulic system is reduced advantageously.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a hydraulic system with variable quantitative system. Background technique [0002] In the prior art, the hydraulic systems of construction vehicles such as loaders are mostly quantitative systems, which have overflow losses. However, the fixed variable hydraulic systems that appeared later are basically steering and working systems, and their structures are relatively complicated. When working, the variable displacement pump becomes a quantitative pump, and the system pipeline loss is relatively large, thus resulting in high fuel consumption. [0003] In the existing loader quantitative system, all the flow output by the pump is returned to the oil tank through the multi-way valve of the control motion cylinder under any working condition, resulting in high pressure loss and unable to reflect the variable change. Contents of the invention [0004] In order to so...

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): F15B11/17F15B11/16F15B13/02
CPCF15B11/17F15B11/161F15B13/022
Inventor 乔战战谢朝阳张安民孙志远
Owner XCMG CONSTR MACHINERY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com