Circuit breaker position indicating device of middle-high circuit breaker advancing mechanism

Abstract

The invention relates to a circuit breaker position indicating device of middle-high circuit breaker advancing mechanism, which belongs to the technology field of circuit breakers. The advancing mechanism comprises a chassis with a panel and a screw rod, a first indicating stem hole is arranged on the panel, a second indicating stem hole is arranged on the chassis, the circuit breaker position indicating device comprises a supporting seat, a limit plate, a guide rod and an indicating stem, the supporting seat is fixed on the chassis, the limit plate is fixed on the circuit breaker and corresponds to the supporting seat, one end of the guide rod is arranged on the supporting seat and the other end is arranged on the limit plate in a penetrating way, the indicating stem is articulated on the supporting seat and is connected with the guide rod, the first indicating stem hole is stretched of the other end of the indicating stem, a first limit piece and a second limit piece are fixedly arranged on the guide rod and an energy storage mechanism is also arranged on the guide rod. The indicating device has advantages of being convenient for operators to view, improving the operating efficiency of the circuit breaker, avoiding the situation that working position or test position is not in place and preventing electricity of the advancing mechanism and the circuit breaker and the damage to the related components for interlocking the mechanism.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a circuit breaker position indicating device of a medium and high voltage circuit breaker propulsion mechanism. Background technique [0002] As is well known in the industry, voltages above 1000 volts are usually called medium and high voltages, so circuit breakers used in power transmission and transformation lines above 1000 volts are habitually called medium and high voltage circuit breakers. The function of the medium and high voltage circuit breaker propulsion mechanism is to drive the circuit breaker to move, so that the circuit breaker reaches the working position or the test position or switches between the two positions. The structure of the known medium and high voltage circuit breaker propulsion mechanism is as follows: image 3 shown. The applicant describes its working principle below in conjunction with this figure. [0003] When the operator...

AI Technical Summary

Problems solved by technology

Obviously, in the prior art, it is judged that the circuit breaker is in the working position or the test position by testing whether the sealing plate 13 can close the operating hole 3. If the sealing plate 13 cannot close the operating hole 3, it means that the circuit breaker has not yet been closed. To reach the working position or test position, you need to continue to shake the handle 1, and vice versa

Therefore, there are the following extreme phenomena: especially due to the difference in individual strength (strength) of the operator, as far as the operator with relatively strong strength is concerned, in order to avoid continuing to shake the handle 1 when the circuit breaker has reached the working position or test position, causing the machine Therefore, the operation is often stopped when the handle 1 is felt to be under force, (especially when the circuit breaker 4 and the static contact for power transmission of the external circuit start to contact and during the contact process, the circuit breaker is under a lot of force) try to seal the hole Plate 13 to test, so that the action that can be completed in one go or called one-time completion is suspended, which affects the work efficiency; as far as the operator with relatively weak strength is concerned, in order to fully ensure that the circuit breaker is in the required working position or test position, it is also necessary to The operation of the sealing plate 13 is tested, so the operating efficiency is also affected

In particular, there are the following technical problems: when the circuit breaker does not reach the working position or the test position and forcibly closes the operation hole 3, not only the closing plate 13, the rotating arm 14 and even the interlocking lever 6 and the fixing plate 8 will be damaged, but also the It will affect other parts of the propulsion mechanism, and then affect the judgment of whether the circuit breaker is in place (working position or test position). In serious cases, the electrical and mechanical interlock between the propulsion mechanism and the circuit breaker will be unreliable, and even the propulsion mechanism cannot be operated.

Therefore, the existing literature does not give any technical inspiration for indicating the working position or test position of the circuit breaker

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