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Circuit breaker and transmission device thereof

A technology of transmission device and circuit breaker, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of wear and tear of lateral tie rods, and achieve the effects of small friction force, small wear, and improve transmission efficiency and movement reliability.

Active Publication Date: 2016-06-08
PINGGAO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a transmission device to solve the technical problem in the prior art that the transverse tie rods are subjected to a relatively large vertical component force, which results in long horizontal guides and serious wear of the transverse tie rods.

Method used

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  • Circuit breaker and transmission device thereof
  • Circuit breaker and transmission device thereof

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Embodiment Construction

[0020] The embodiment of circuit breaker in the present invention is such as figure 1 with 2 shown. The circuit breaker includes a transmission device. The transmission device includes a transverse tie rod 1 connected to the movable contact and a crank arm 9 that is connected to the transverse tie rod 1 through a connecting plate 12 to drive the rotation axis of the transverse tie rod 1 to move left and right along the front and rear directions. The connecting plate One end of 12 is hingedly connected with crank arm 9, and the other end of connecting plate 12 is hingedly connected with transverse tie rod 1. The transmission device also includes hinge pin shaft guide 13, and hinge pin shaft guide 13 is provided with hinge pin shaft in left and right direction. The hinge pin shaft guide structure with upper guide movement matching. The crank arm 9 is hinged to the fixed hinge point 8 on the frame of the circuit breaker. The transmission device also includes a transmission rod ...

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Abstract

The invention relates to a circuit breaker and a transmission device thereof. The circuit breaker comprises the transmission device. The transmission device comprises a transverse pull rod connected with a movable contact, and a connecting lever connected with the transverse pull rod in a transmission mode through a connection plate so as to drive the rotation axis of the left-right movement of the transverse pull rod to extend in the front-back direction. One end of the connection plate is connected with the crank arm in a hinged mode, and the other end of the connection plate is connected with the transverse pull rod in a hinged mode through a hinge pin shaft with the axis extending in the front-back direction. The transmission device further comprises a hinge pin shaft guide piece. A hinge pin shaft guide structure matched with the hinge pin shaft in a guide and movement mode in the left-right direction is arranged on the hinge pin shaft guide piece. Due to the constraint of the hinge pin shaft guide structure, the hinge pin shaft only transmits acting force in the left-right direction to the transverse pull rod. The transverse pull rod basically does not bear vertical component force transmitted by the crank arm. Therefore, the friction force between a transverse pull rod guide structure and the transverse pull rod can be small, abrasion to the transverse pull rod guide structure and the transverse pull rod is small, and the improvement of the transmission efficiency and the movement reliability is facilitated.

Description

technical field [0001] The invention belongs to the technical field of high-voltage switches, and in particular relates to a circuit breaker and a transmission device thereof. Background technique [0002] In a circuit breaker, it is usually necessary to convert the up and down movement of the mechanism into the horizontal movement of the moving contact rod. For example, the Chinese patent application publication number CN104465203A, titled A Transmission Device for High-Voltage Circuit Breakers, discloses a transmission device. In this transmission device, the first pull rod converts the up and down motion into the horizontal motion of the second pull rod (equivalent to the horizontal pull rod) through the first pulley, crank arm and the second pulley. The force transmitted from the first tie rod to the second tie rod includes vertical component force and horizontal force component, and the second bushing (equivalent to the horizontal tie rod guide structure) is required t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
CPCH01H71/10
Inventor 江经华贺晶晶张银穗李永林孙清超李俊峰雷传魏建巍
Owner PINGGAO GRP
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