A handcart propulsion interlocking device for DC fast circuit breaker

Abstract

The invention relates to a direct current fast breaker handcart advancing interlocking device, and includes a lead screw nut advancing mechanism, a clutch mechanism, a direct current fast breaker switching-off mechanism and an integrated operation interlocking mechanism, wherein the lead screw nut advancing mechanism includes a threaded lead screw and a nut block, and the threaded lead screw penetrates through the nut block; the clutch mechanism includes a clutch device and a clutch shaft sleeve, one end of the threaded lead screw stretched into the clutch device, and the clutch shaft sleeve sleeves one end of the threaded lead screw. The direct current fast breaker handcart advancing interlocking device provided by the invention can avoid occurrence of a circumstance that other frequent operation of the lead screw mechanism causes damage to the lead screw and thus the breaker handcart cannot be operated, reduces the step of artificially judging whether the direct current breaker handcart is in place, ensures that the handcart can reliably switch off the direct current quick breaker through manual operation under various circumstances, is safe and reliable, avoids misoperation circumstances caused by human factors, and ensures personal safety of operating personnel.

Description

technical field [0001] The invention relates to an interlocking device for a circuit breaker, in particular to a handcart propelling interlocking device for a DC fast circuit breaker. Background technique [0002] Circuit breakers are widely used in power transmission and distribution equipment. With the increasing use of circuit breakers in the market, the extensive use of circuit breakers has made a significant contribution to power transmission and distribution. In the electrical cabinet, when the handcart of the medium voltage circuit breaker is moved into the electrical cabinet, a certain position must be reserved, and the stability when pushing in must be ensured. At present, all handcarts use screw rods as the main means of transmission, but there are also Certain problems, if the screw cannot quickly and accurately push or withdraw the circuit breaker to the working position or test position, it will lead to frequent operations of other screw mechanisms, resulting in...

AI Technical Summary

Problems solved by technology

[0002] Circuit breakers are widely used in power transmission and distribution equipment. With the increasing use of circuit breakers in the market, the extensive use of circuit breakers has made a significant contribution to power transmission and distribution. In the electrical cabinet, when the handcart of the medium voltage circuit breaker is moved into the electrical cabinet, a certain position must be reserved, and the stability when pushing in must be ensured. At present, all handcarts use screw rods as the main means of transmission, but there are also Certain problems, if the screw cannot quickly and accurately push or withdraw the circuit breaker to the working position or test position, it will lead to frequent operations of other screw mechanisms, resulting in damage to the screw and making it impossible to operate the handcart of the circuit breaker. The integration level of the current handcart circuit breaker is not very high, its operation is complicated, and it will also cause safety hazards

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