Contact fixing block quick-motion expression mechanism for switch machine

Abstract

The invention relates to a contact fixing block quick-motion expression mechanism for a switch machine. The mechanism comprises a starting plate, the staring plate is inserted in locked iron of a transmission locking mechanism, positioning is conducted through positioning pins in the locked iron, and grooves are formed in the two ends of the starting plate; two bosses are arranged below the starting plate, slide blocks are installed on the bosses, and the locking iron is arranged in a linkage body groove; a left fixing block and a right fixing block are arranged at the two sides of the starting plate and connected to the two ends of a tension spring connector through connectors respectively, and the tension spring connector is connected with a tension spring; the left fixing block and theright fixing block move left and right along with the action force of the torsion spring; a left contact rack and a right contact rack are arranged on the left fixing block and the right fixing block,and contact idler wheels are installed on the left contact rack and the right contact rack. The contact fixing block quick-motion expression mechanism for the switch machine has the advantages that it is guaranteed that the contact depth of a contact is not changed and does not need to be adjusted in the switch process, the stability is good, normal work of the switch machine is not influenced, and the maintenance degree is low.

Description

technical field [0001] The invention belongs to the technical field of railway switch machines, and in particular relates to a snap-action mechanism of a switch machine indicating contact fixing block. Background technique [0002] The requirements for the contact system of the switch machine for switching railway switches are that during the switching process, the contact between the static contact and the moving contact at the power electric contact must be guaranteed to be continuously stable, and when the switching is in place, the contact should be quickly disconnected and connected to the indicating circuit. Correctly indicate the position of switch point rail or core rail. [0003] At present, the commonly used indication mechanisms of switch machines mostly use contact rollers to roll on the starting plate or action plate. Since the starting plate or action plate moves together with the action process during the action conversion process of the switch machine, that i...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used indication mechanisms of switch machines mostly use contact rollers to roll on the starting plate or action plate. Since the starting plate or action plate moves together with the action process during the action conversion process of the switch machine, that is, the contact rollers are in the rolling position. state, which caused the problem of contact movement during the action process, so it is necessary to frequently adjust the penetration depth, which increases the workload of daily maintenance

If the amount of movement is too large, it will cause a serious impact of power failure and shutdown during the conversion process

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