Short circuit device for plug-in relay and plug-in relay

Abstract

The invention discloses a plug-in relay and a short-circuit device used for the plug-in relay, and the short-circuit device comprises a mounting base used for being connected with the relay, an electric conductor and at least two short-circuit pieces, wherein the electric conductor is mounted in the mounting base; the short-circuit piece is provided with a through hole used for being connected with a male pin of a relay, and one end of the short-circuit piece is clamped between the installation base and the electric conductor. According to the invention, the internal contact of the relay is short-circuited through the short-circuiting device, so that the problems of large workload, damage to the original line and the like in the trimming junction process in the transformation process are solved; the device can save manpower and time cost, improves transformation efficiency, and is convenient to operate and high in universality.

Description

technical field [0001] The invention belongs to the technical field of circuit control tools, and in particular relates to a plug-in relay and a short-circuit device for the plug-in relay. Background technique [0002] The relay is an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input quantity meets the specified requirements. [0003] Plug-in relays are often used in rail transit vehicles to control the fresh air ventilation volume of passenger cars. For some special cases, when it is necessary to temporarily increase the fresh air ventilation volume of passenger cars, the existing transformation plan is to shield the vehicle speed signal so that the ventilation device Working at the highest frequency, that is, shorting the normally closed contacts of the relay makes the ventilation device receive high-speed signals all the time. ...

AI Technical Summary

Problems solved by technology

[0005] 1. The workload is heavy and time-consuming;

[0006] 2. The renovation measures are temporary measures, and the original wiring needs to be restored in the future;

[0007] 3. The transformation requires a large amount of materials to be temporarily used. Each group needs 16 male pins, a large amount of insulating tape, etc., and the cost is relatively high

[0008] Another method is to withdraw the two female pins from the QE connector, and directly use the wire core to bind the female pins, but the disadvantage is that it is easy to cause losses to the cables, and the workload is large, which is not conducive to later recovery.

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