Link mechanism for spring operating mechanism and spring operating mechanism

Abstract

The invention relates to connecting rod mechanism used for a spring operating mechanism and the spring operating mechanism. The connecting rod mechanism used for spring operating mechanism includes afirst connecting rod subassembly cooperating with a closing maintenance mechanism and a second connecting rod subassembly used for being connected to an output shaft and an opening spring; the first connecting rod subassembly is in hinged joint with the second connecting rod subassembly through a closing articulated shaft; and the connecting rod mechanism also includes a supporting shaft which isin parallel arrangement with the closing articulated shaft, and the supporting shaft is connected to the closing articulated shaft through a connecting lever of the supporting shaft. Through such a structure, one part of the opening force is borne by the closing maintenance mechanism, and the other part of the opening force is borne by the supporting shaft. Compared with the prior art, the problemthat unreliable performance and poor stability of the closing maintenance mechanism caused by the opening force which is fully borne by the closing maintenance mechanism is avoided.

Description

technical field [0001] The invention belongs to the field of driving and operating devices for circuit breakers in high-voltage switchgear, and in particular relates to a link mechanism for a spring operating mechanism and a spring operating mechanism. Background technique [0002] At present, in the spring operating mechanism of the high-voltage switch circuit breaker, the semi-shaft type tripping method is mostly adopted, and the opening force directly acts on the semi-axis. The spring clutch device includes a cam, a link mechanism, an output shaft and a closing and maintaining mechanism. The closing and maintaining mechanism includes an opening detent and an opening semi-shaft. The connecting rod mechanism includes a first link assembly and a second link assembly. A connecting rod assembly includes a first connecting plate that is a first connecting rod, a second connecting rod assembly includes an output shaft crank arm and a second connecting plate, the second connectin...

AI Technical Summary

Problems solved by technology

[0002] At present, in the spring operating mechanism of the high-voltage switch circuit breaker, the semi-shaft type tripping method is mostly adopted, and the opening force directly acts on the semi-axis. The spring clutch device includes a cam, a link mechanism, an output shaft and a closing and maintaining mechanism. The closing and maintaining mechanism includes an opening detent and an opening semi-shaft. The connecting rod mechanism includes a first link assembly and a second link assembly. A connecting rod assembly includes a first connecting plate that is a first connecting rod, a second connecting rod assembly includes an output shaft crank arm and a second connecting plate, the second connecting plate is a second connecting rod, the first connecting rod and the second connecting rod It is connected by a hinged shaft. The closing roller is set on the hinged shaft. The output shaft is connected with an arc extinguishing chamber. The cam is in contact with the closing roller and acts on the closing roller. The second connecting rod transmits the power to the output shaft for closing. The first connecting rod drives the opening detent to maintain closing. At this time, the opening detent is buckled with the opening half shaft, and the energy release of the closing spring is completed. At this time, the opening spring and the overtravel spring of the interrupter are in the storage position. In the working state, the opening force fully acts on the opening half shaft, the buckle relay force is relatively large, and the requirements for the closing and holding mechanism are relatively high. Under the action of a large force for a long time, it will easily lead to problems such as unreliable performance and poor stability of the closing and holding mechanism.

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