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Electric actuator torque protection device

An electric actuator and protection device technology, applied in emergency protection circuit devices, transmission devices, friction transmission devices, etc., can solve the problems of inaccurate slider movement, inaccurate force transmission, and inability to meet the needs of The effect of production, stable operation and simplified structure

Inactive Publication Date: 2015-02-04
TIANJIN JINDA ACTUATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The left and right movement of the slider is realized by the springs set on the left and right sides of the horizontal guide rod, and the force transmission is not very accurate.
At the same time, since the slider swings directly on the guide rod, the movement of the slider is not very precise
Therefore, it cannot meet the occasions with strict overload requirements.

Method used

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  • Electric actuator torque protection device
  • Electric actuator torque protection device
  • Electric actuator torque protection device

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Embodiment Construction

[0015] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Such as figure 1 , figure 2 with image 3 The shown torque protection device for an electric actuator includes a frame 2 , a butterfly spring 3 and a gear 7 . The frame 2 includes a bottom plate, a vertical plate and two side plates. The frame 2 is used to set other equipment for the torque protection device of the entire electric actuator. There are threaded holes 12 on the four corners of the bottom plate. The threaded holes 12 are used for Fix the entire device in some other working position. Side plates are respectively arranged on both sides of the bottom plate, and guide rods 13 are also fixedly arranged on the side plates. The guide rod 13 and the side plate are fixed together by screws 6 , and two butterfly springs 3 are also arranged on the guide rod 13 . The two butterfly springs 3 are separated by the connecting block 4...

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Abstract

Discloses is an electric actuator torque protection device. The electric actuator torque protection device comprises a guide rod, two butterfly-shaped springs, a gear and a machine frame, wherein the two butterfly-shaped springs sleeve the guide rod, the two butterfly-shaped springs are separated through a connection block, a rack is further fixed on the connection block, the guide rod is fixed on the machine frame, radial motion of the two butterfly-shaped springs on the guide rod is limited by the machine frame, the gear is arranged on the rack in matching mode, travel switches are fixedly arranged in two moving directions of the rack, and the rack can touch a trigger of the travel switch when the rack moves in either direction. The electric actuator torque protection device is enabled to stably run due to the fact that common spiral springs are replaced with the butterfly-shaped springs, and simultaneously is high in moving accuracy due to the fact that an original slide block connection is replaced with a gear and rack motion transmission mode, and enables a person to directly observe numerical values on a display screen in torque running due to the fact that a potentiometer is added on the electric actuator torque protection device.

Description

technical field [0001] The invention belongs to the field of industrial instrument control, in particular to an electric actuator torque protection device. Background technique [0002] At present, electric actuators are widely used in many fields such as electric power, chemical industry, petroleum, metallurgy and so on. The motor plays a vital role as the power source of the electric actuator. Electric actuators are in the process of operation, often under the action of certain factors, there will be a phenomenon of stalling, causing the motor to overload and eventually cause the motor to burn out. Therefore, in order to prevent the motor from overloading, the existing electric actuators are usually equipped with an over-torque protection device. The result and working principle are: the over-torque protection device is composed of a bracket and a slider installed in the actuator, and the end of the slider It is clamped on the inner teeth of the planetary reducer between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/085F16H19/04
Inventor 吴健刘伟庞地韩小君范晋蕊
Owner TIANJIN JINDA ACTUATOR CO LTD
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