Cabin door telescopic connecting rod device of low-voltage power distribution cabinet

Abstract

The invention relates to a panel telescopic connecting rod device of a low-voltage power distribution cabinet, comprising a control member and a connecting rod part; the connecting rod part comprises an outer rod with an inner cavity, an inner rod inserted in the inner cavity of the outer rod and a prepressing elastic piece arranged in the inner cavity of the outer rod; the rod wall of the outer rod is provided with an axial elongated slot; and the control member is fixedly arranged on the inner rod extending in the outer rod so that the control member can be clamped on the elongated slot of the outer rod when the inner rod do telescopic motion in the inner cavity of the outer rod. Through the telescopic connecting rod of the invention, the extraction distance between a handle position and a fuse protector can be automatically adjusted, at the moment, when a pushing mechanism unit pushes into the whole set of equipment according to a sequence of a connection position, a test position, a switching off position or draws out of the whole set of equipment in a reverse sequence, a panel can be ensured to be in a closed state, and the switching off and on functions of a drawer type switch cabinet control loop on the connection position, the test position and the switching off position can be achieved.

Description

technical field [0001] The invention relates to a telescopic connecting rod device, in particular to a telescopic connecting rod device for a panel of a low-voltage power distribution cabinet, which is applied to low-voltage switchgear. Background technique [0002] The withdrawable unit device in the domestic low-voltage withdrawable switchgear has three operating positions: connection, test and disconnection, and the operation mode of the withdrawable unit device is mainly manual pulling operation. When operating in this position, the panel of the switchgear needs to be kept in the closed state to achieve protection against coal dust and dust in the external environment. However, in the current domestic withdrawable switchgear, there is a rigid link between the handle outside the panel and the mechanism components in the cabin, so that the panel cannot be completely closed when the withdrawable unit device is in the three operating positions of connection, test and disconn...

AI Technical Summary

Problems solved by technology

However, in the current domestic withdrawable switchgear, there is a rigid link between the handle outside the panel and the mechanism components in the cabin, so that the panel cannot be completely closed when the withdrawable unit device is in the three operating positions of connection, test and disconnection. Therefore, coal dust and dust in the external environment will enter the panel and cause pollution to the electrical equipment in the cabin, affecting its normal work, and seriously causing work accidents

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