Drive having an emergency closing function

A driver and emergency technology, applied in the direction of fluid-driven clutches, magnetic-driven clutches, non-mechanical-driven clutches, etc., can solve problems such as costs and achieve the effect of reducing costs

Active Publication Date: 2012-11-21
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The disadvantage of the latter drive is the technical expense of the device for

Method used

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  • Drive having an emergency closing function
  • Drive having an emergency closing function
  • Drive having an emergency closing function

Examples

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Embodiment Construction

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

[0050] figure 1 The open position of the seat valve 1 , 2 is shown, from which position the valve body 2 of the seat valve 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 the valve body 2 is moved by the adjustment drive 44 and in emergency operation alternatively by the emergency spring 6 integrated into the clutch device 46 .

[0052] figure 2 show according to fig...

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PUM

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Abstract

The invention relates to a drive having an emergency closing function, comprising a movable coupling device, which has an emergency spring clamped between an input-side and an output-side spring system. The emergency spring is preferably a compression spring moved along with the coupling device. A distance of the spring systems is defined by means of 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. According to the invention, the locking device is operated or can be 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 101 52 414 A1 and in document DE 197 23 624 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 103 08 017 B4 shows a hydraulic drive with a mechanical clutch and an emergency spring, wherein in normal operation the emergency spring moves together with the clutch in a tensioned...

Claims

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Application Information

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