Hydraulic drives and systems

A driving device, hydraulic technology, applied in the direction of fluid pressure actuating device, servo motor, mechanical equipment, etc., can solve the problems of slow response of hydraulic actuator, difficult to meet the expected requirements, etc., to increase the compression volume and increase the pressure. Accuracy, improve work efficiency

Inactive Publication Date: 2018-04-10
BOSCH REXROTH (CHANGZHOU) CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing hydraulic system, as long as the pressure of the hydraulic system is greater than the accumulator, the hydraulic oil will enter the accumulator, even when it is necessary to drive a hydraulic actuator (such as a hydraulic cylinder or a hydraulic motor), the hydraulic oil will It will still be injected into the accumulator, so part of the hydraulic oil originally needed for the hydraulic actuator may be stored in the accumulator, causing the hydraulic actuator to respond slowly and it is difficult to meet the expected requirements

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 drives and systems
  • Hydraulic drives and systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to help those skilled in the art to accurately understand the subject matter claimed by the present invention, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] figure 1 A schematic diagram showing a hydraulic drive device according to a specific embodiment of the present invention, such as figure 1 As shown, a hydraulic drive device 100 according to a specific embodiment of the present invention includes a hydraulic pump 1, an accumulator 3, and a control unit 5. Among them, the hydraulic pump 1 pumps hydraulic fluid from the reservoir 7 into the hydraulic output line 2 for connecting to the hydraulic actuator to be driven. The accumulator 3 is connected to the hydraulic output line 2 through the accumulator line 30. The accumulator line 30 is provided with a flow control device 32. The flow control device 32 may be a system, a valve or other devices. The control unit 5 controls t...

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 drive device and a system. The hydraulic drive device includes a hydraulic pump, an accumulator, and a control unit, wherein the hydraulic pump pumps hydraulic fluid from the accumulator into the hydraulic output line; the accumulator is connected to the hydraulic output line through the energy storage line, and the flow rate is set in the energy storage line Control device; the control unit controls the flow control device to adjust the flow of hydraulic fluid passing through the energy storage circuit according to the operating conditions. In a hydraulic drive system, the hydraulic output lines are connected to one or more hydraulic actuators. Therefore, the hydraulic drive device and system of the present invention can adjust the flow rate and pressure of the hydraulic fluid passing through the energy storage line in real time according to the operating conditions, improve work efficiency, save energy consumption, and improve pressure accuracy.

Description

Technical field [0001] The present invention relates to the technical field of hydraulic driving, in particular to hydraulic driving devices and systems. Background technique [0002] In order to achieve predetermined actions in mechanical equipment, hydraulic drives are often used. For example, on an injection molding machine, after closing the mold, it is necessary to inject the heated and melted plastic into the cavity of the mold. Then, it is necessary to maintain the pressure to maintain the position of the injection hydraulic actuator for a period of time, wait for the injection molded part to cool in the cavity and then open the mold to take out the part, and then close the mold for the next injection. Therefore, in the injection molding machine, it is necessary to realize the actions of injection, mold closing and mold opening, and these actions can be realized by hydraulic driving devices. However, each action has different requirements for the required hydraulic flow ...

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): F15B11/02
Inventor 王伟陈永伯杨大鹏刘洋孙培
Owner BOSCH REXROTH (CHANGZHOU) CO LTD
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