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

Pressure medium supplying device for hydrostatic driving device

A pressure medium and supply device technology, applied in the direction of fluid pressure actuation device, transmission device control, accumulator device, etc., can solve the problems of descending function and negative impact, so as to improve efficiency, reduce cost, and avoid empty space hole effect

Active Publication Date: 2016-06-22
ROBERT BOSCH GMBH
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this has the disadvantage that the control pressure drops when a large amount of pressure medium has to be supplied to the hydraulic motor and has a negative effect on other functions

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
  • Pressure medium supplying device for hydrostatic driving device
  • Pressure medium supplying device for hydrostatic driving device
  • Pressure medium supplying device for hydrostatic driving device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] According to the pressure medium supply device 1 for a hydrostatic drive according to the first embodiment of the invention, in figure 1 The circuit diagram shown in contains a hydraulic pump 2 adjustable in its displacement volume, which is fluidically connected to a hydraulic motor 4 in an open circuit and drives it.

[0049]Via the supply connection M, the hydraulic motor 4 can be supplied with pressure medium from the pressure accumulator 6 in order to avoid cavitation. The supply connection M is connected in parallel to the hydraulic motor 4 and has two shut-off valves 8 , which each release the pressure medium flow from the pressure accumulator 6 to the hydraulic motor 4 . The two shut-off valves 8 and the supply connection M are integrated in the hydraulic motor 4 or in its housing.

[0050] A multi-way slide valve 10 designed here as a 4 / 3 bypass valve is provided for controlling the drive direction of the hydraulic motor 4 . One switch-on position of the mult...

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 pressure medium supply device for a hydrostatic drive, which has a hydraulic pump, a hydraulic motor which can be fluidically driven by it, and a supply connection, by means of which the supply connection can be controlled in order to avoid cavitation. A pressure accumulator supplies the hydraulic motor with pressure medium. According to the invention, a multi-way slide valve for controlling the driving direction of the hydraulic motor is provided. Furthermore, according to the invention, the pressure accumulator is arranged between a valve which can be closed by the pressure in the pressure accumulator and the supply connection.

Description

technical field [0001] The invention relates to a pressure medium supply device for a hydrostatic drive according to the preamble of claim 1 . Background technique [0002] In known hydrostatic drives, in particular pivot drives for construction machines, the hydraulic motor of the pivot drive can be supplied with pressure medium via a supply connection to avoid cavitation, said The supply connection is usually connected to the line towards the pressure medium groove, supplying the pressure medium with approx. 2 to 5 bar. However, this is not sufficient in certain cases and can lead to undesired noise generation, especially for hydraulic motors which are designed in the form of radial pistons. [0003] Furthermore, in order to increase the efficiency of the hydrostatic drive, it is desirable to reduce the pressure in the line leading to the pressure medium groove. However, this can lead to an insufficient supply of pressure medium to the hydraulic motor and thus to cavitat...

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): F15B11/08F15B1/02
CPCF16H61/4096F15B21/047F15B2211/20546F15B2211/613F15B2211/625F15B2211/7058F15B2211/715F15B2211/8609F16H61/4148F15B11/08F15B1/022F15B2211/8613
Inventor I·爱德华O·格拉夫
Owner ROBERT BOSCH GMBH
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