Spring operating mechanism of load switch

Abstract

The invention discloses a spring operating mechanism of a load switch. The spring operating mechanism comprises a base, a driving unit, a clutch unit, a crank arm, an energy storage unit, an output unit, a switching-on tripping unit and an opening tripping unit; the driving unit comprises a driving shaft rotationally arranged on the base, and a driving gear is arranged on the driving shaft; the clutch unit comprises a driven shaft rotationally arranged on the base, a driven gear and a clutch disc are arranged on the driven shaft, a clutch bayonet is formed in the outer edge of the clutch disc,and a clutch detent is close to the outer edge of the clutch disc and buckled on the clutch bayonet; the crank arm is rotationally arranged on the base; the energy storage unit is connected with thebase and the driving shaft; and after the driving shaft rotates to enable the energy storage unit to store energy, the crank arm compresses the clutch detent and enables the clutch detent to be separated from the clutch bayonet. By means of the clutch structure, after energy storage of the energy storage unit is completed, input torque cannot be transmitted into the driven shaft any more, the driven shaft idles, the error-tolerant rate is increased, and the situation that a motor or manpower influences the switching-on process on the driving unit is avoided.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a spring operating mechanism of a load switch. Background technique [0002] The load switch is a switching device between the circuit breaker and the isolating switch. It has a simple arc extinguishing device, which can cut off the rated load current and a certain overload current, but cannot cut off the short-circuit current. [0003] At present, the operating mechanism of the load switch applied on the switchgear generally adopts the operating mechanism similar to the isolating switch. For example, most manufacturers use the disc spring structure. This type of structure is only suitable for breaking small current load switches, and cannot be used for high-voltage currents. Moreover, the number of parts is large and the structure is complicated. The mechanical life of this type of mechanism is generally short, and the usable times are mostly 3000-5000 times, which ...

AI Technical Summary

Problems solved by technology

[0002]The load switch is a switching device between the circuit breaker and the isolating switch. It has a simple arc extinguishing device and can cut off the rated load current and a certain overload current. , but cannot cut off the short-circuit current

[0003] At present, the operating mechanism of the load switch applied on the switchgear generally adopts the operating mechanism similar to the isolating switch. For example, most manufacturers use the disc spring structure. This type of structure is only suitable for breaking small current load switches, and cannot be used for high-voltage currents. Moreover, the number of parts is large and the structure is complex. The mechanical life of this type of mechanism is generally short, and the number of times it can be used is mostly 3000-5000 times, which cannot meet the needs of users with high requirements.

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