Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electro-hydraulic system for recycling and releasing potential energy of engineering machinery

A technology of gravitational potential energy and construction machinery, which is applied in the direction of fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc. It can solve the problems of low power density, inability to provide energy instantaneously, high cost of supercapacitors or batteries, and achieve Improve efficiency, low price, and reduce the effect of energy conversion

Active Publication Date: 2015-07-22
ZHEJIANG UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of supercapacitors or batteries used in this system is very high, and the power density is very low, which cannot provide high energy instantaneously, and is not suitable for application in the field of construction machinery with large load fluctuations and frequent movements. widely used

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
  • Electro-hydraulic system for recycling and releasing potential energy of engineering machinery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0031] In order to improve the safety of the electro-hydraulic system of the present invention and reduce energy loss, as a preferred embodiment of the present invention, the reversing mechanism may further include a hydraulically controlled one-way valve 4 and a second hydraulically controlled two-position three-way valve 5 . Such as figure 1 As shown, port B of the hydraulically controlled one-way valve 4, port P of the second hydraulically controlled two-position three-way valve 5, and the rodless chamber of the lifting hydraulic cylinder 8 communicate with each other, and port A of the hydraulically controlled one-way valve 4 is connected to the multi-way The B port of the valve 3 is connected, the A port of the second hydraulically controlled two-position three-way valve 5 is connected with the spring cavity of the hydraulic control check valve 4, and the B port of the second hydraulically controlled two-position three-way valve 5 is connected with the oil tank 27.

[003...

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 an electro-hydraulic system for recycling and releasing the potential energy of an engineering machinery. The electro-hydraulic system comprises a control system, a power source, a performing mechanism, a switching mechanism and an energy recycling releasing mechanism, wherein the control system comprises a controller, a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor; the power source comprises an engine, a main variable pump and an oil tank; the performing mechanism comprises a lifting hydraulic cylinder; the switching mechanism comprises a multiway valve and a pilot control handle; and the energy recycling releasing mechanism comprises an energy accumulator, a first liquid control two-position three-way valve, an electromagnetic two-position three-way valve and a variable pump-motor. With the adoption of the electro-hydraulic system for recycling and releasing the potential energy of the engineering machinery, when the working condition of the engineering machinery is down, a lot of gravitational potential energies can be recycled and is used for driving the main pump, so that the consumption power of the engine is lowered, the energy waste is reduced, and the work efficiency of the engineering machinery is improved.

Description

technical field [0001] The invention relates to an energy recovery system for construction machinery, in particular to an electro-hydraulic system for recovery and release of gravitational potential energy of construction machinery. Background technique [0002] At present, energy saving and environmental protection have become common topics all over the world. Construction machinery is one of the main areas of energy consumption. Therefore, energy conservation and environmental protection are particularly important in the application of construction machinery. The most important working conditions of excavators, loaders, crawler cranes and other equipment widely used in construction machinery are lifting and slewing. However, in most of the existing construction machinery, there is no energy recovery system. A large amount of potential energy and kinetic energy are lost by overflow and throttling during the running process, which not only causes a huge waste of energy, but ...

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 Patents(China)
IPC IPC(8): F15B21/14
Inventor 魏建华李世振杜晓东方锦辉胡波陈莹
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com