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Hydraulic valve device

A technology of hydraulic valves and valve devices, which is applied in the direction of valve devices, fluid pressure actuating devices, valve operation/release devices, etc., and can solve problems such as large structural lengths

Inactive Publication Date: 2018-09-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] All such solutions have the disadvantage that a relatively large number of components are required in order to adjust the spring prestress and to secure the spring seat against adjustment
[0006] Another disadvantage is that due to the required components, such as adjusting screws and lock nuts or expanders, the valve arrangement must be designed with a correspondingly large overall length

Method used

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Examples

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Embodiment Construction

[0030] figure 1 A longitudinal section through a valve arrangement is shown, which in the exemplary embodiment shown is used as a control valve arrangement 1 for pressure regulation and supply flow regulation of an axial piston pump. As explained at the beginning, the pressure regulation and supply flow regulation of the axial piston pump is realized by adjusting the oscillating cradle / swash plate by means of the adjusting cylinder, the pressure chamber of which acts in the adjusting direction via the adjusting valve arrangement Tank pressure or system pressure may be applied, preferably the pressure at the outlet of the pump may be applied. For further details on such an adjustment device of an axial piston pump, reference can be made, for example, to the document DE 10 2010 048 068 A1 mentioned at the outset (see here in particular FIG. 6 and the associated description), the disclosure of which in this regard can be regarded as Disclosure of this application. The regulatin...

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PUM

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Abstract

The invention discloses a hydraulic valve device, in particular a regulating valve device of an axial piston machine with at least two valves, the springs of which are respectively supported on spring seats. According to the invention, the two spring seats are connected to one another in a material-fit, non-positive fit or positive fit manner.

Description

technical field [0001] The invention relates to a hydraulic valve arrangement, for example for pressure regulation and volume flow regulation of an axial piston machine. Background technique [0002] Such a hydraulic valve arrangement is known from document DE 10 2010 048 068 A1 and has a valve housing in which the pressure control valve and the supply flow control valve of the axial piston machine are arranged axially parallel. Each of the control valves has a valve body which is guided in a valve bore and is conductive via a pressure medium connection between a pressure connection to which the pump pressure (system pressure) is applied and a tank connection or a control connection. The pressure chamber of the regulating cylinder is accordingly supplied with system pressure or tank pressure. The valve bodies of the supply flow control valve and the pressure control valve are each acted on by a control spring in one direction, wherein the pressure chamber is connected to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
CPCF15B2211/20553F16K31/1225F16K31/363F16K27/041Y10T137/598G05D7/00
Inventor F.诺特C.迪博尔德D.洛米勒
Owner ROBERT BOSCH GMBH