A key safety management device

Abstract

The invention discloses a key safety management device, which belongs to the field of railway crossing interlock control. In order to solve the virtual lock phenomenon caused by the key not being inserted in place in the prior art and reduce the safety and reliability of key management, a key safety management device is set up. During the entire process of using the key safety management device , the key is inserted into the key hole, the self-locking part can expand and contract freely when the power is not applied, and the self-locking part is lifted up, and when the key touches the plunger contact position of the spring plunger type micro switch, the self-locking When the parts fall, the key will be automatically locked, and the spring plunger micro switch will transmit the trigger signal to the console, that is, the safe locking of the key is completed. If you need to take the key, press the unlock switch, and then press the confirmation button to self-lock Under the magnetic effect of electrification, the parts are magnetically attracted, and the key can be taken out. This design solves the virtual lock phenomenon in the prior art and improves the accuracy and stability of key management.

Description

technical field [0001] The invention relates to the field of railway crossing interlock control, in particular to a key safety management device. Background technique [0002] On the level crossings of railways and highways, the railing machine at the railway crossing needs to be unlocked with a key to be lifted. Using the key management device can enable the station master's office to remotely manage the keys, better realize the interlocking of the crossing when the train is about to pass, can effectively standardize the management level of the keys, and can avoid misuse of keys leading to misoperations, and at the same time It can also reduce the workload of manual management. [0003] Existing key management devices generally insert the key directly, and use a specific remote control or password to unlock when unlocking. However, the problem is that crossing management has different security states. When the train is about to pass, after the crossing fence is lowered, t...

AI Technical Summary

Problems solved by technology

However, the problem is that crossing management has different safety conditions. When the train is about to pass, after the crossing fence is lowered, the key lock is very important. It is necessary to ensure that the key cannot be used at will to raise the fence.

Images