Circuit breaker and double-crank-arm transmission device

A transmission device and circuit breaker technology, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of relatively high mechanical strength requirements of the crank arm, the influence of circuit breaker reliability, and the loss of movement stroke, and improve the mechanical reliability. The effect of reducing the requirements of mechanical strength and mechanical strength and improving the utilization rate

Active Publication Date: 2018-02-16
CHINA XD ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of controlling the opening and closing, the movement stroke of the mechanism has a certain loss, and at the same time, a considerable part of the work of the mechanism acts on the main crank arm connecting the mechanism and the arc extinguishing chamber, resulting in a certain loss in the utilization of the mechanism work, and has a great impact on the crank arm. The mechanical strength requirements are relatively high, which has a certain impact on the overall reliability of the circuit breaker

Method used

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  • Circuit breaker and double-crank-arm transmission device
  • Circuit breaker and double-crank-arm transmission device
  • Circuit breaker and double-crank-arm transmission device

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Embodiment Construction

[0024] In order to make the present invention more obvious and understandable, the present invention will be further described below in conjunction with specific examples, which are explanations rather than limitations of the present invention.

[0025] Such as figure 1 , figure 2 and image 3 As shown, the present invention provides a circuit breaker. The circuit breaker includes a direct connection operating mechanism and its transmission device; the direct connection operation mechanism includes a mechanism pull rod 6 and an arc extinguishing chamber fracture pull rod 8. The mechanism pull rod 6 and the arc extinguishing chamber pull rod 8 pass through the first A rotary pin 5 is directly connected horizontally to ensure that the mechanism pull rod 6 and the main crank arm 1 can move in a straight line and horizontally when connected. The close and open operation directly promote the close and open of the moving side of the arc extinguishing chamber.

[0026] The transm...

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Abstract

The invention discloses a circuit breaker and a double-crank-arm transmission device. A mechanism pull rod is directly connected with a pull rod of an arc-extinguishing chamber; and a resistor port pull rod is in control connection with the mechanism pull rod by double crank arms. The mechanism pull rod serves as a main power output; and the main crank arm and the crank arm serve as slave power outputs. When the mechanism and the arc-extinguishing chamber are connected directly, the closing resistor port is controlled by the double crank arms, so that the operation power losses of the main crank arm are minimized and thus the utilization rate of the mechanism is improved. During the opening and closing processes of the circuit breaker, a small force is applied to the driving crank arm of the mechanism, so that the mechanical strength requirement of the main crank arm is also greatly reduced and thus the mechanical reliability of the circuit breaker is improved.

Description

technical field [0001] The invention belongs to the field of high-voltage electric switchgear, and specifically relates to a circuit breaker and a double crank arm transmission device. Background technique [0002] The tank circuit breaker transmission system is used to realize the control connection between the mechanism and the arc extinguishing chamber and the closing resistor fracture. Through a high-strength crank arm, the opening and closing of the arc extinguishing chamber and the opening of the closing resistor are indirectly controlled according to a certain stroke ratio. In the process of controlling the opening and closing, the movement stroke of the mechanism has a certain loss, and at the same time, a considerable part of the work of the mechanism acts on the main crank arm connecting the mechanism and the arc extinguishing chamber, resulting in a certain loss in the utilization of the mechanism work, and has a great impact on the crank arm. The mechanical stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/42
CPCH01H33/42
Inventor 付杰史俊孙会峰
Owner CHINA XD ELECTRIC CO LTD
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