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Electro-hydraulic system, method for starting it and corresponding starting device

A starting device, electric jet technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system safety, fluid pressure actuation system components, etc., can solve the problem of uncontrolled movement of connected loads

Inactive Publication Date: 2008-01-23
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It is therefore an object of the present invention to provide measures to solve the problem of uncontrolled movement of the connected load when activating the electrofluidic system

Method used

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  • Electro-hydraulic system, method for starting it and corresponding starting device
  • Electro-hydraulic system, method for starting it and corresponding starting device

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Embodiment Construction

[0022] Unless otherwise specified, the following instructions apply to the above two working examples.

[0023] FIGS. 1 and 2 each schematically represent an electrofluidic system, also designated 1 , with a combination of an indirectly actuated multiposition valve 2 and an actuating device 3 , which enables the system to be put into operation particularly well. For the sake of clarity, the starting device 3 is framed by a dotted line in the figure.

[0024] The multiposition valves 2 can be distributed in any desired manner within the electrofluidic system 1 . In particular, they can be fastened to different objects. However, there is a design that is particularly advantageous in that the multiposition valves 2 are assembled together as part of a valve group 4 .

[0025] The valve group 4 consists of an integrated or modular connection plate 5 with multi-position valves 2 . The multi-position valve 2 can be mounted on the connection plate 5 from the outside or can be fully...

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Abstract

The invention discloses a method and an apparatus for starting an electro-hydraulic system. The system comprise a compound device containing some indirect electrically operated multiple manifold valve, which matches the electro-hydraulic system and is designed to make each multiple manifold valve contain a main stage. The main stage activates to electrically drive an input stage. The main stage can distribute the pressure medium generated by an operating pressure supplying source. A fluid admission of a main stage (6) is accomplished such that temporarily after fluid admission of input stage the operating pressure (13) supplying source rests only against the main stage. The input stage switches to main stage for switching pressure, which is developed against the input stage, and initial switching positions of the main stage determines electrical control signals.

Description

technical field [0001] The present invention relates to a method of operating an electro-fluidic system comprising a combination of indirectly electrically driven multi-position valves, wherein in normal operating conditions the jet pilot control pressure is obtained at the electrically-driven pilot pressure level of the multi-position valve and at the Jet pressure can be obtained from the multi-position valve main stage controlled by the pilot pressure stage. [0002] The invention also relates to an actuating device for operating an electro-fluidic system comprising a combination of indirectly electrically driven multi-position valves, wherein the multi-position valve of the system comprises a main stage having a jet operating pressure in normal operating conditions, and at least one pilot control stage having a fluidic pilot control pressure, the latter being actuatable by an electrical control signal. [0003] Finally, the invention contemplates an electro-fluidic system ...

Claims

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Application Information

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IPC IPC(8): F15B21/00F15B13/00
CPCF15B20/00
Inventor M·伯纳
Owner FESTO AG & CO KG