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Valve Actuator Handwheel Mechanism

A technology of valve actuators and handwheels, which is applied in the direction of instruments, control components, mechanical control devices, etc., can solve the problems of inaccurate axial force, poor working reliability, and susceptibility to temperature, and achieve the effect of improving assembly efficiency

Inactive Publication Date: 2016-07-27
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the valve actuator in the prior art uses a mechanical method to judge the size of the axial force, but the axial force measured by this method is not accurate and is easily affected by temperature, and the mechanism Complicated, very difficult to install, less reliable in operation

Method used

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  • Valve Actuator Handwheel Mechanism
  • Valve Actuator Handwheel Mechanism

Examples

Experimental program
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Embodiment Construction

[0027] Such as figure 1 , 2 As shown, the valve actuator handwheel mechanism of the present invention includes a handwheel shaft assembly and a force measuring assembly connected with the handwheel shaft assembly.

[0028] The handwheel shaft assembly includes a hand 3, the end of the handwheel 3 is connected to the handwheel shaft housing 5, and the second bushing 4 is arranged inside the handwheel shaft housing 5, and the second bushing 4 is connected to the handwheel shaft housing 5 through a transition fit. together, and then clamped with the second circlip 6, preventing the bushing 4 from moving axially. The handwheel shaft 7 passes through the bushing 4 and is connected with the handwheel 3 through the second flat key 25 located at the front of the handwheel shaft 7. The outer end of the wheel 3 is used to prevent the axial movement of the hand wheel 3. The end of the handwheel shaft 7 is fixedly connected with the inner spline sleeve 12 through a cylindrical pin 24, ...

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Abstract

The invention discloses a valve actuator handwheel mechanism, which comprises a handwheel shaft assembly and a force measuring assembly connected with the handwheel shaft assembly, and the force measuring assembly includes a worm arranged on a main casing (17) The shaft mounting seat (18) is provided with a worm shaft (15) in the worm shaft mounting seat (18), and a measuring sensor mechanism and a worm fixing device are arranged between the worm shaft (15) and the worm shaft mounting seat (18). The present invention uses an axial force sensor to replace the original mechanical force measuring device, can accurately measure the magnitude of the axial force on the worm shaft, and the measurement accuracy is not affected by temperature. efficiency.

Description

technical field [0001] The invention relates to a handwheel mechanism, especially a valve actuator handwheel mechanism. Background technique [0002] In the field of valve actuators, the handwheel mechanism is generally used in manual operation when the power is off. The worm is used to drive the worm wheel to rotate, and then the output is output through the main shaft. When the motor is working, in order to prevent the motor from being overloaded, it is necessary to judge the magnitude of the axial force on the worm. If the axial force is too large, the central processing unit will cut off the power of the motor and stop working. [0003] At present, in the field of valve actuators, mechanical methods are generally used to judge the magnitude of the axial force. It calculates the magnitude of the axial force by measuring the deformation of the disc spring mounted on the worm shaft after being subjected to the axial force. The axial force measured by this method is inaccura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05G1/08G01L5/00
Inventor 聂建军李辉杨辉王英杰鄢鸿桢
Owner ZHONGYUAN ENGINEERING COLLEGE
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