CN-121983445-A - Double-layer crimping type auxiliary switch and switch cabinet

CN121983445ACN 121983445 ACN121983445 ACN 121983445ACN-121983445-A

Abstract

The double-layer crimping type auxiliary switch and the switch cabinet comprise a double-layer auxiliary switch shell, an upper auxiliary switch, a lower auxiliary switch and an auxiliary switch telescopic shaft which are arranged in the double-layer auxiliary switch shell, and an external lead terminal which is arranged outside the double-layer crimping type auxiliary switch and the switch cabinet, wherein the auxiliary switch telescopic shaft is arranged between the upper auxiliary switch and the lower auxiliary switch, the auxiliary switch telescopic shaft comprises a movable contact, and the movable contact controls the on-off of the upper auxiliary switch and the lower auxiliary switch through self movement. The two telescopic shafts trigger the on-off switching of 12 open points and 12 closed points, so that the problem of asynchronous switching can be effectively solved, and the problem of up-down deviation of the positions of 12 auxiliary switch contacts after the 12 auxiliary switches are assembled can be solved, so that the problem of asynchronous actions when the auxiliary switches are pressed or released is caused.

Inventors

CHEN GUANGFU
LU AIHUA
SHI WENBO
ZHANG ZHIJIAN
LI HONGJUN
CHEN YANG
ZHANG HAOMENG

Assignees

上海置信日港电气有限公司
上海置信电气非晶有限公司

Dates

Publication Date: 20260505
Application Date: 20260204

Claims (10)

1. A double-layer crimping auxiliary switch, comprising: The double-layer auxiliary switch shell (1), an upper auxiliary switch, a lower auxiliary switch and an auxiliary switch telescopic shaft (5) which are arranged in the double-layer auxiliary switch shell, and an outer lead terminal (4) which is arranged outside the double-layer auxiliary switch shell, wherein the auxiliary switch telescopic shaft (5) is arranged between the upper auxiliary switch and the lower auxiliary switch, the auxiliary switch telescopic shaft (5) comprises a movable contact, and the movable contact controls the on-off of the upper auxiliary switch and the lower auxiliary switch through self motion.
2. The dual layer crimping auxiliary switch of claim 1, wherein: the double-layer auxiliary switch shell (1) comprises an upper auxiliary switch shell and a lower auxiliary switch shell, and the upper auxiliary switch shell is connected with the lower auxiliary switch shell in a screw, bolt and/or clamping manner.
3. The dual layer crimping auxiliary switch of claim 2, wherein: The upper auxiliary switch shell comprises an upper layer static contact (3), and the lower layer auxiliary switch shell comprises a lower layer static contact (2), wherein an outer lead terminal (4) is respectively connected with the upper layer static contact (3) and the lower layer static contact (2); the upper layer stationary contact (3) and the lower layer stationary contact (2) are used for contacting with the movable contact to realize the closing and opening of the switch.
4. A double-layer crimping auxiliary switch as claimed in claim 3, wherein: The upper layer stationary contact (3) and the lower layer stationary contact (2) are both made of copper materials.
5. The dual layer crimping auxiliary switch of claim 1, wherein: The auxiliary switch telescopic shaft (5) comprises an upper auxiliary switch telescopic shaft and a lower auxiliary switch telescopic shaft, the movable contact comprises an upper movable contact and a lower movable contact, the upper movable contact is arranged on the upper auxiliary switch telescopic shaft, and the lower movable contact is arranged on the lower auxiliary switch telescopic shaft.
6. The dual layer crimping auxiliary switch of claim 5, wherein: The upper layer movable contact is used for realizing the closing and opening of the upper layer fixed contact (3), and the lower layer movable contact is used for realizing the closing and opening of the lower layer fixed contact (2).
7. The dual layer crimping auxiliary switch of claim 5, wherein: the upper auxiliary switch telescopic shaft is used for driving the upper movable contact to move, and the lower auxiliary switch telescopic shaft is used for driving the lower movable contact to move.
8. The dual layer crimping auxiliary switch of claim 5, wherein: The upper auxiliary switch telescopic shaft and the lower auxiliary switch telescopic shaft are hollow structures in the parallel direction, and the upper movable contact and the lower movable contact penetrate through the hollow structures to be fixed.
9. The dual layer crimping auxiliary switch of claim 5, wherein: the upper auxiliary switch telescopic shaft and the lower auxiliary switch telescopic shaft are a plurality of evenly distributed sealing surfaces in the direction perpendicular to the auxiliary switch telescopic shaft.
10. A switch cabinet, characterized in that: A double-layer crimping auxiliary switch comprising any one of claims 1-9.

Description

Double-layer crimping type auxiliary switch and switch cabinet Technical Field The invention relates to the technical field of gas-insulated switchgear, in particular to a double-layer crimping auxiliary switch and a switch cabinet. Background The switch cabinet is one of important equipment in the distribution network, and the main function of the switch cabinet is to open and close, control and protect electric equipment in the process of generating, transmitting, distributing and converting electric energy of a power system. The switch cabinet is widely used in a power distribution system, and can be used for receiving and distributing electric energy, so that a part of power equipment or circuits can be put into or out of operation according to the operation requirement of a power grid, and fault parts can be rapidly cut off from the power grid when the power equipment or the circuits are in fault, thereby ensuring the normal operation of the fault-free parts in the power grid and the safety of equipment and operation maintenance personnel. The environment-friendly gas-insulated metal-enclosed switchgear is used as an indispensable part of the switchgear, and for the environment-friendly gas-insulated metal-enclosed switchgear, a three-station mechanism is a core component, so that whether a position signal given by the mechanism is accurate or not is particularly important for the operation and maintenance of the equipment after the three-station mechanism is mechanically driven in place. The auxiliary switch for the conventional gas-insulated switchgear has the problems of poor contact, misoperation, low reliability, poor stability, few contact points and the like of auxiliary contacts in use. The prior art discloses a switch cabinet (CN 209981886U) with double auxiliary switches, which comprises a cabinet body, a closing cam, a separating brake cam, a closing auxiliary switch and a separating brake auxiliary switch, wherein a grounding switch and an operating main shaft are arranged in the cabinet body, a separating brake state indicating lamp and a closing brake state indicating lamp are also arranged on the cabinet body, the closing cam is fixedly sleeved on the operating main shaft, the separating brake cam is also fixedly sleeved on the operating main shaft, the closing auxiliary switch is fixed on the inner side wall of the cabinet body and corresponds to the closing brake cam, one contact of the closing brake auxiliary switch is connected in series with a power circuit of the closing brake state indicating lamp, the separating brake auxiliary switch is fixed on the inner side wall of the cabinet body and corresponds to the separating brake cam, and one contact of the separating brake auxiliary switch is connected in series with the power circuit of the separating brake state indicating lamp. However, this prior art has the disadvantages: 1. the auxiliary switch has only 6 contacts which are opened or closed, the contact signals of the opening and closing are only 6 groups, and when the requirement of the opening and closing signals exceeds 6 groups, the problem of insufficient contact points is caused. 2. The contacts of the auxiliary switch are driven by two groups of transmission components, and when any one of the operation components fails in driving, the auxiliary contact signals are incorrectly sent; 3. the contact of the auxiliary switch is used for displaying the opening and closing position of the grounding switch, the opening or closing state of the grounding switch is reflected, and when the opening or closing state of the grounding switch is required to be grounded, the auxiliary switch cannot give out a signal at the moment; therefore, it is highly desirable to provide a two-layer crimp type auxiliary switch. Disclosure of Invention In order to solve the defects in the prior art, the invention provides a double-layer crimping auxiliary switch and a switch cabinet to solve the technical problems in the background art. The invention adopts the following technical scheme. The first aspect of the present invention provides a double-layer crimping auxiliary switch, which is characterized by comprising: The double-layer auxiliary switch shell, the upper auxiliary switch, the lower auxiliary switch and the auxiliary switch telescopic shaft which are arranged in the double-layer auxiliary switch shell, and the double-layer auxiliary switch shell also comprises an external lead terminal which is arranged outside the double-layer auxiliary switch shell, wherein the auxiliary switch telescopic shaft is arranged between the upper auxiliary switch and the lower auxiliary switch, the auxiliary switch telescopic shaft comprises a movable contact, and the movable contact controls the on-off of the upper auxiliary switch and the lower auxiliary switch through self motion. Preferably, the double-layer auxiliary switch shell comprises an upper auxiliary switch shell and a lower auxiliary switch shell