A Switching Device for Dual Power Automatic Transfer Switch

Abstract

The invention relates to a switching device used for a dual-power automatic change-over switch. The device includes a common side contact driving connecting rod assembly and a standby side contact driving connecting rod assembly, a main shaft penetrating the common side contact driving connecting rod assembly and the standby side contact driving connecting rod assembly, a common side spring energy storage mechanism and a standby side spring energy storage mechanism which sleeve the main shaft in parallel, and a main shaft driving mechanism arranged at one end of the main shaft, the main shaft includes a common side transmission section, a standby side transmission section and a transition section arranged between the common side transmission section and the standby side transmission section, and the common side transmission section and the standby side transmission section form an included angle. Compared with the prior art, through arrangement of the common side transmission section and the standby side transmission section on the main shaft which form the included angle, and matching with limiting convex hulls in a main shaft driving connecting rod, switching-off and switching-on of the common side contact driving connecting rod assembly or the standby side contact driving connecting rod assembly are realized, the structure is simple, machining and assembling are easy, and control precision is high.

Description

technical field [0001] The invention belongs to the technical field of dual-power automatic transfer switches, and relates to a switching device for dual-power automatic transfer switches. Background technique [0002] Dual power automatic transfer switch is mainly used in emergency power supply system, it can automatically switch the load circuit from one power supply to the other to ensure the continuous and reliable operation of the load in important occasions. [0003] The switching mechanism of the existing dual-power automatic transfer switch mainly includes the main shaft gear, the main shaft, the common side spring energy storage mechanism, the spare side spring energy storage mechanism, the common side idle stroke mechanism, the spare side idle stroke mechanism, and the common contact drive connecting rod and spare side contact drive linkage. Among them, since the transmission plane of the main shaft is consistent with the normal side and the standby side, and in t...

AI Technical Summary

Problems solved by technology

In this method, although the mechanical interlock can be realized, when the dual-power automatic transfer switch is in the double-point position, neither the spring energy storage mechanism on the normal side nor the spring energy storage mechanism on the backup side can be completely released, making its main shaft Continuous force, and in the factory assembly stage, the operator needs to overcome a certain torque when packaging, in order to complete the installation, the operation is inconvenient

At the same time, due to the existence of the two mechanisms of the common side empty stroke mechanism and the spare side empty stroke mechanism, the types and quantities of parts and components increase, which increases the manufacturing cost and management cost

[0004] In addition, most of the manual operating handles of the existing dual-power automatic transfer switches are inserted on the intermediate conversion gear, and the contact indicator is also located on the intermediate conversion gear. Due to the influence of manufacturing errors and transmission errors, the tolerance of the indicated position will accumulate. , which affects the control accuracy

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