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Clutch type safe switchover hand wheel mechanism of pneumatic actuator

A pneumatic actuator, clutch-type technology, applied in the direction of engine components, devices to prevent accidental or unauthorized action, mechanical equipment, etc., can solve the problem that the handwheel mechanism has no safety protection device, the handwheel mechanism is damaged, and the reliability is reduced. and other problems to achieve the effect of eliminating the possibility of accidents, high safety and reliable work.

Active Publication Date: 2012-11-21
浙江鼎锋流体自控设备有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a safety component, this structure is relatively easy to reduce its reliability due to the influence of external complex working conditions
[0004] So in general, the traditional handwheel mechanism used for pneumatic manual switching has no safety protection device. Once in the manual position, the air source is suddenly connected for some reason, which is very easy to damage the handwheel mechanism, and even cause more serious joint accidents. ACCIDENT

Method used

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  • Clutch type safe switchover hand wheel mechanism of pneumatic actuator
  • Clutch type safe switchover hand wheel mechanism of pneumatic actuator
  • Clutch type safe switchover hand wheel mechanism of pneumatic actuator

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Embodiment Construction

[0019] Next, the clutch-type safety switching handwheel mechanism of the pneumatic actuator of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] The clutch type safety switching handwheel mechanism of the pneumatic actuator, its structure includes the handwheel 3, the switching handle 4, the box body 1, the box cover 2 and the worm gear and worm gear set in the inner cavity formed by the box body and the box cover, Wherein both ends of the worm 8 are connected with an eccentric shaft, and both ends of the switching handle 4 are inserted into the eccentric half shaft. The hand wheel is fixedly connected to the eccentric half shaft on one side. The integrated safety protection device installed on the eccentric half shaft at the far end of the handwheel can automatically cut off the air source pipeline under the manual function state. The safety protection device includes a switching valve core 7, a switching valve body...

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Abstract

The invention discloses a clutch type safety switchover hand wheel mechanism of a pneumatic actuator. The clutch type safety switchover hand wheel mechanism mainly comprises a hand wheel, a switchover handle, a box body, a box cover and a worm and gear transmission device which is arranged in an inner cavity formed by the box body and the box cover, the hand wheel is moved and turned, worms located in two eccentric half shafts are swirled, so that an output shaft located on a worm wheel can be driven to rotate, and a manual driving of a valve device can be achieved by the hand wheel mechanism. The switchover handle is swirled to a manual position, and an integrated safety protective device, namely a gas source pipeline which can automatically shut down pneumatic control, is located on the eccentric half shafts so as to prevent mechanism damages caused by the fact that the gas source is suddenly switched on due to operation faults. Compared with traditional safety devices, the clutch type safety switchover hand wheel mechanism has the advantages that the integration and the safety are high, and the operation is reliable.

Description

technical field [0001] The invention relates to the field of pneumatic control valves, in particular to a clutch-type safety switching handwheel mechanism added between the pneumatic actuator and the valve when the pneumatic actuator fails to work and the pipeline is in danger. Background technique [0002] The handwheel mechanism in the prior art is mainly composed of a box body, a worm wheel arranged inside the box body, a worm screw, and an eccentric half shaft fixedly connected to the two ends of the worm screw in a cylindrical shape and non-coaxially connected with the worm screw. A hand wheel fixedly connected to an eccentric half shaft, and a switching handle fixed on the eccentric half shaft. When the switching handle is at the lower position, the worm is separated from the worm wheel; when the switching handle is moved to the upper position, the worm is combined with the worm gear, and The handwheel then drives the worm to rotate, and the worm then drives the worm w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/14F16K31/53F16K35/00
Inventor 张澄晚
Owner 浙江鼎锋流体自控设备有限公司
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