Electric locomotive key chain alarm device

Abstract

The invention provides an electric locomotive key interlocking alarm device. Each electrical switch is in mechanical linkage with a corresponding locomotive key. One end of each electrical switch is connected with the +5 V direct current power end of a microprocessor, and the other end of the electrical switch is connected with the signal input end of the microprocessor. The output end of the microprocessor is connected with an alarm unit and an execution mechanism. Fault combination states of various locomotive keys are written into the microprocessor. The microprocessor receives level signals of all the electrical switches. When the level signal combination of all the electrical switches accords with a certain locomotive key fault combination state, the alarm unit is driven to give an alarm, and the execution mechanism is driven to execute a protection action. Through logical judgment of the mechanical interlocking electrical switches, the locomotive key fault combination states can be found accurately in time, the alarm unit is driven to give the alarm, the protection action is executed, and equipment burning loss and personal injury and death accidents caused by human factors of operation staff are completely and reliably avoided.

Description

technical field [0001] The invention relates to a key chain alarm device for an electric locomotive, which belongs to the technical field of locomotive manufacturing. Background technique [0002] In order to facilitate the safe and smooth progress of bow raising, power supply, grounding and maintenance of electric locomotives, key switches are provided for related equipment of the locomotive in the prior art: blue key, which is used for raising the bow position of the brake cabinet and the main grounding position of the high-voltage cabinet ; The yellow key is used for the working position of the high-voltage cabinet; the green key is used for the switch lock of each cabinet door. The mechanical interlocking relationship of these keys is as follows. [0003] When the blue key controls the bow raising state: the yellow key is in the working position, and the green key cannot be pulled out at this time when the key box has been pulled out; pull out the yellow key on the key ...

AI Technical Summary

Problems solved by technology

[0005] However, because the blue key can be inserted and function at the same time in the brake cabinet lifting bow and the main grounding position of the high-voltage cabinet; the yellow key can control the main grounding of the high-voltage cabinet and the green key of the key box respectively; the green key can open and close the cabinet door at will , which can lead to the following problems:

[0006] 1. When there is a blue key in the brake cabinet and the locomotive lifts the bow and touches the grid, the operator holds another blue key and inserts it into the main grounding position of the high-voltage cabinet and the main grounding works, causing a short circuit in the catenary or even a burnout of the equipment. damage or personal injury;

[0007] 2. When the locomotive is raised and the yellow key of the high-voltage cabinet is in the working position, the operator holds a yellow key for the locomotive, inserts it into the key box, twists it and pulls out the green key, and can open various high and low-voltage cabinet doors at will. At this time, it is easy to cause casualties;

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