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

A Closed Hydraulic System with Multiple and Single Piston Pumps Recombined to Control Asymmetric Hydraulic Cylinders

A hydraulic system and hydraulic cylinder technology, applied in the field of hydraulic cylinder control, can solve the problems of increasing the complexity and design difficulty of the hydraulic system, and achieve the effects of simple structure, high reliability, and elimination of flow and pressure output pulsation.

Active Publication Date: 2017-12-01
HUAQIAO UNIVERSITY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to ensure the effective operation of the asymmetric cylinder, it is often necessary to introduce an additional small-displacement charge pump and charge control valve in the hydraulic system for oil replenishment, which greatly increases the complexity and design difficulty of the hydraulic system

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
  • A Closed Hydraulic System with Multiple and Single Piston Pumps Recombined to Control Asymmetric Hydraulic Cylinders
  • A Closed Hydraulic System with Multiple and Single Piston Pumps Recombined to Control Asymmetric Hydraulic Cylinders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below through specific embodiments.

[0020] refer to figure 1 , a closed hydraulic system in which multiple single-piston pumps are recombined to control an asymmetric hydraulic cylinder, including a fuel tank 10 and a hydraulic cylinder 20, the hydraulic cylinder 20 is an asymmetric hydraulic cylinder, which is provided with a large cavity oil port A and a small cavity oil mouth B. It also includes two one-way valves 30, two safety valves 40 and multiple sets of single plunger pumps. The first oil inlet and outlet ports 56 of the multiple groups of single plunger pumps are all connected with the large cavity oil port A, wherein the second oil inlet and outlet ports 57 of at least two groups of single plunger pumps are connected with the small cavity oil port B, and the remaining groups The second oil inlet and outlet port 57 of the single plunger pump communicates with the oil tank 10 to compensate the flow difference ...

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 closed hydraulic system of a multi-single plunger pump recombination control asymmetric hydraulic cylinder. The closed hydraulic system comprises an oil tank, a hydraulic cylinder, two one-way valves, two safety valves and multiple sets of single plunger pumps; first oil ports of the multiple sets of single plunger pumps are all communicated with a large cavity oil port; second oil ports of at least two sets of single plunger pumps are communicated with a small cavity oil port; second oil ports of the rest sets of single plunger pumps are communicated with an oil tank to compensate a flow difference of the hydraulic cylinder; outlets of the two one-way valves are respectively connected with the large cavity oil port and the small cavity oil port, and inlets of the two one-way valves are communicated with the oil tank; and inlets of the two safety valves are respectively connected with the large cavity oil port and the small cavity oil port, and outlets of the two safety valves are communicated with the oil tank. The closed hydraulic system is simple in structure, high in reliability and low in output flow pressure pulsation.

Description

technical field [0001] The invention relates to the field of hydraulic cylinder control, in particular to a closed hydraulic system in which multiple single plunger pumps recombine and control asymmetrical hydraulic cylinders. Background technique [0002] Hydraulic transmission is widely used in various industrial fields due to its advantages of high power density and easy realization of linear motion. However, the existing hydraulic transmission system often has the problem of low efficiency, among which the throttling loss is one of the main factors causing the low efficiency of the hydraulic system. The traditional closed pump control hydraulic system uses a traditional closed plunger pump to directly drive a single actuator, and controls the speed of the actuator by controlling the displacement and speed of the traditional variable pump. Since the system adopts the volume control instead of the throttling control, the throttling loss of the system can be eliminated, th...

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): F15B15/18
CPCF15B15/18
Inventor 陈其怀任好玲林添良付胜杰陈强吕若曦
Owner HUAQIAO UNIVERSITY
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