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Pressure limiting valve for hydrostatic drive systems

A hydrostatic drive, pressure limiting valve technology, applied in fluid pressure actuation system components, control/regulation systems, fluid pressure actuation devices, etc., can solve problems such as high position requirements and high structural consumption of pressure limiting valves.

Active Publication Date: 2022-02-18
LINDE HYDRAULICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Several separate pressure-limiting valves are required for this, resulting in higher construction costs and higher space requirements for the pressure-limiting valves

Method used

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  • Pressure limiting valve for hydrostatic drive systems
  • Pressure limiting valve for hydrostatic drive systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] exist figure 1 A circuit diagram of a pressure limiting valve 1 according to the invention of a hydrostatic drive system is shown in .

[0022] The pressure limiting valve 1 is connected on the input side to the pressure medium line 2 and on the output side to the discharge line 3 . A discharge line 3 is connected to a container 4 . The pressure limiting valve 1 has a blocking position SP in which the connection of the pressure medium line 2 to the discharge line 3 is blocked. The pressure limiting valve 1 also has an open position OF in which the pressure medium line 2 communicates with the discharge line 3 .

[0023] According to the invention, the pressure limiting valve 1 is connected to at least one additional discharge line ZL, at figure 1 In the illustrated embodiment shown, it is connected to the additional discharge line ZL described below, to which the pressure medium reservoir DM is connected.

[0024] The pressure limiting valve 1 has, for each additiona...

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PUM

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Abstract

The invention relates to a pressure limiting valve (1) of a hydrostatic drive system, which is connected on the input side to a pressure medium line (2) and on the output side to a discharge line (3), wherein the pressure limiting valve (1) has: a cut-off position (SP), in which the connection of the pressure medium line (2) to the discharge line (3) is cut off; an open position (OP), in which the pressure medium line ( 2) Communicate with the discharge line (3). The pressure limiting valve (1) is connected to at least one additional discharge line (ZL; ZL1, ZL2) and the pressure limiting valve (1) has a control position (ST; ST1, ST2), in said control position the pressure medium line (2) communicates with the additional discharge line (ZL; ZL1, ZL2).

Description

technical field [0001] The invention relates to a pressure limiting valve for a hydrostatic drive system, which is connected on the input side to a pressure medium line and on the output side to a discharge line, wherein the pressure limiting valve has a cut-off position in which in which the connection of the pressure medium line to the discharge line is blocked; and an open position in which the pressure medium line communicates with the discharge line. Background technique [0002] Pressure limiting valves are installed in hydrostatic drive systems in order to limit the maximum system pressure and thus prevent mechanical damage to components of the hydrostatic drive system. Known pressure-limiting valves are designed as valves which compare the prevailing system pressure in the pressure medium line of the drive system with a predetermined opening pressure at the pressure-limiting valve, which opening pressure is usually determined by the pressure towards the shut-off posi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/04F16K17/164F16K11/07F15B13/02F15B1/02
CPCF15B1/02F15B13/02F16K11/0716F16K17/046F16K17/0473F16K17/048F16K17/164F15B1/027F15B13/024F15B21/14G05D16/106
Inventor J·施米茨
Owner LINDE HYDRAULICS