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Hydraulic pre-control equipment

A pre-control and equipment technology, applied in mechanical equipment, fluid pressure actuators, buildings, etc., can solve the problem of low response speed, and achieve the effect of reducing vibration excitation, reducing mass, reducing mass and vibration excitation

Inactive Publication Date: 2015-10-21
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the stability of the control loop is increased, but at the same time it has disadvantages such as a lower response speed

Method used

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  • Hydraulic pre-control equipment
  • Hydraulic pre-control equipment

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] figure 1 The essential parts of an exemplary embodiment of the hydraulic pilot control device according to the invention are shown in a side sectional view. Four pre-control valves designed as pressure regulating valves are arranged in the housing 1, in figure 1 Only two of the pressure regulating valves 2a, 2b are shown in . The pressure regulating valves 2a, 2b are actuated by means of a pivotable control disc 4, which can surround a horizontally extending first pivot axis 6a ( figure 1 ) and can be tilted relative to the housing 1 via the second pivot axis 6b arranged perpendicular to the drawing plane. This is realized by the joystick fixed on it above the joystick 4, in figure 1 Only a small part 8 of the joystick is shown in . Attached to this part 8 is a handle, by means of which the control panel 4 can be tilted about the two pivot axes 6 .

[0028] The two pressure regulating valves 2a, 2b are in their respective neutral position, in which the respective r...

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Abstract

A hydraulic pilot control unit includes at least one pressure control valve that can be controlled by means of an actuating device. The pressure control valve includes a control piston connected to a stem by means of a neck. The stem has a resilient operative connection to the actuating device. The neck is fastened to the stem. Thus, the mass of the control piston, which tends to oscillate, is reduced compared to the prior art.

Description

technical field [0001] The invention relates to a hydraulic pilot control device according to the preamble of claim 1 . Background technique [0002] Such hydraulic pilot control devices with pressure regulating valves are used in particular to apply pressure and thus to regulate valves or slide valves of the main stage, on which relatively high pressures are exposed. For this purpose, the pilot control device has a joystick or a handle, by means of which the respective adjusting piston of the pressure regulating valve is adjusted. [0003] DE 196 22 948 A1 describes a pressure regulating valve for such a hydraulic pilot control system. here (according to figure 1 ), if the adjusting piston is displaced in the opening direction by the tappet, the control pressure applied on port P is completely or partially transferred to working joint A. [0004] A disadvantage of this hydraulic pilot control system is that the adjusting piston can be excited to oscillate via different p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/042
CPCF15B13/0422Y10T137/7781Y10T137/87064E02F9/22F15B13/042F15B13/043
Inventor W·克劳斯G·拉罗泽
Owner ROBERT BOSCH GMBH