Drawer interlocking device of low voltage distribution cabinet

Abstract

The invention discloses a low-voltage distribution cabinet drawer interlocking device, comprising an interlocking display device, a pushing device, a locking circuit breaker interlocking device, a travel switch, a pin mechanism, and a positioning part which is arranged on a drawer soleplate. The interlocking display device and the pushing device are arranged on the front installation plate of a lock shell in parallel and connected with each other by a connecting gear which is arranged between the interlocking display device and the pushing device. One side of the lock shell is provided with a fixed base; the locking circuit breaker interlocking device is arranged on the fixed base. The low-voltage distribution cabinet drawer interlocking device can arrange the position of advancing or withdrawing required by the drawer in advance under a situation that the drawer is not pushed, and can directly reach the required position by jumping the middle position. The low-voltage distribution cabinet drawer interlocking device pushes the drawer to advance or withdraw by the rotation of a spiral pushing wheel; the locking circuit breaker interlocking device uses a steel wire soft shaft to control the on/off of the circuit breaker; the low-voltage distribution cabinet drawer interlocking device has the advantages of simple structure, reliable and labour-saving actions and stable motion, is not restricted by the distance of the drawer part, can realize the control in long distance and has convenient installation.

Description

technical field [0001] The invention relates to a mechanical interlocking safety device for a drawer of a low-voltage withdrawable power distribution cabinet, which belongs to the technical field of power supply and distribution equipment. Background technique [0002] In the low-voltage withdrawable power distribution cabinet, electrical components such as the drawer unit and the cabinet itself, and the circuit breaker in the unit must realize reliable interlock protection to ensure the safety of equipment components and personal safety and reduce the occurrence of accidents. The existing low-voltage drawer cabinets have a relatively single mechanical interlocking function, which is inconvenient to operate and not high in safety. During the push process of the drawer, rely on manpower to realize the straight in and out of the drawer, and determine the position of the drawer through a locking pin. Because the magnitude of the thrust is difficult to be consistent, the drawer ...

AI Technical Summary

Problems solved by technology

The existing low-voltage drawer cabinets have a relatively single mechanical interlock function, which is inconvenient to operate and not high in safety

During the push process of the drawer, rely on manpower to realize the straight in and out of the drawer, and determine the position of the drawer through a locking pin. Because the magnitude of the thrust is difficult to be consistent, the drawer is often pushed past the position to be positioned and hits the cabinet wall. The positioning of the drawer unit Reliability is not easily guaranteed

At present, the existing drawer units have been changed to rotary and rocking in the push mode, but they must be operated with both hands to unlock the drawer to advance through the test and working positions in sequence, and cannot be locked, which increases the difficulty of operation. The security is not high

In addition, the size of the existing mechanism is large, and the size of the drawer cannot be used universally. In the interlocking of the drawer and the circuit breaker, the existing mechanism is realized by several sections of sheet metal parts plus springs, and there are many transmission links. The smoothness requirement is high, and when the drawer is pushed in, it is easy to cause jamming

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