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Drive with emergency closing function

A driver and emergency technology, applied in the direction of fluid drive clutch, magnetic drive clutch, non-mechanical drive clutch, etc., can solve the problem of cost and achieve the effect of reducing cost

Active Publication Date: 2016-02-03
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of the latter drive is the technical expense of the device for the mechanical release function which must be moved together with the emergency spring

Method used

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  • Drive with emergency closing function

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0049] figure 1 A schematic diagram of a first embodiment of a complete drive according to the invention is shown. The drive has an adjustment drive 44 designed as an electric cylinder, by which the seat valve (in the figure 1 in) the valve body 2 to the right in the closing direction or (in figure 1 Middle) to the left in the opening direction.

[0050] figure 1 The open position of the seat valve 1 , 2 is shown, from which position its valve body 2 can be pressed against the valve seat 1 of the seat valve in the closing direction.

[0051] Furthermore, the drive has a hydraulic system 48 by means of which the drive according to the invention can be switched, in particular, from normal operation to emergency operation. In normal operation, valve body 2 is moved by adjusting drive 44 and, in emergency operation, alternatively by emergency spring 6 integrated into clutch device 46 .

[0052] figure 2 show according to figure 1 Adjustment drive 44 and clutch arrangement ...

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PUM

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Abstract

A drive having an emergency closing function comprises a movable coupling device, which has an emergency spring clamped between an input-side and an output-side spring system. The emergency spring is a compression spring moved along with the coupling device. A distance of the spring systems is defined by a locking device in normal operation of the drive, wherein the emergency spring can relax for an emergency function or emergency movement of the drive after the locking device is released or unlocked. The locking device is operated or triggered hydraulically or pneumatically and / or magnetically.

Description

technical field [0001] The invention relates to a drive with an emergency closing function according to the preamble of claim 1 . Background technique [0002] Various accessories are known in drives with an emergency closing function. [0003] Document DE 10152414 A1 and document DE 19723624 A1 show hydraulic drives for valve bodies of valves with a fixed mechanical coupling between actuating cylinder and valve body. The valve body is pretensioned in the closing direction of the corresponding valve by means of a corresponding emergency spring, which enables the valve to close in the event of a fault. [0004] A disadvantage of such a hydraulic drive is that the emergency spring is loosened or tensioned by the drive during each adjustment movement of the valve body. [0005] Document DE 10308017 B4 shows a hydraulic drive with a mechanical clutch and with an emergency spring, wherein in normal operation the emergency spring moves together with the clutch in a tensioned sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/56
CPCF16K31/56F16D25/06F16D27/02F16K31/1225
Inventor U.弗勒利希R.陶贝尔I.德托卢克
Owner ROBERT BOSCH GMBH
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