Stationary contact group

Abstract

The invention discloses a stationary contact group. The stationary contact group comprises stationary contact seats, wiring terminal bolts arranged on the stationary contact seats and stationary contact pieces which are arranged on the wiring terminal bolts in a sleeving manner and are fixed by nuts; limiting spiral springs are arranged at the positions, on the outer sides of the stationary contact pieces, of the stationary contact seats; cover plates are arranged on the positions, on the front sides of the wiring terminal bolts, of the top surfaces of the stationary contact seats; through holes extending in the thickness direction of the stationary contact seats are formed in the back sides of the stationary contact seats in the width direction; a hole opening of the bottom surface of each through hole comprises an outwards-bulging arc-shaped avoiding part and a round hole part which is externally tangent with the arc-shaped avoiding part and communicates with the arc-shaped avoidingpart; anti-separating bulge blocks are arranged on the inner side walls, opposite to the arc-shaped avoiding parts, of the round hole parts; one end, arranged on the corresponding wiring terminal bolt in a sleeving manner, of each stationary contact piece is a circular surface, one end of a lead is welded on the circular surface, and the other end of the lead is fixedly connected with a conducting ring; the wiring terminal bolts are sleeved with the conducting rings; and the conducting rings are fixed by nuts. Upper flexible connecting leads are adopted, so that the defect of creepage phenomena due to connection of the leads with the bottom ends of the wiring terminal bolts at present is overcome.

Description

technical field [0001] The invention relates to a constant-voltage static contact seat for controlling the action of an electric switch machine, indicating the position and state of a turnout, and realizing electromechanical interlocking. Background technique [0002] In the present railway transportation, the train runs on the track according to the signal, constantly passing through the turnout or passing through the turnout. The signal of the opening direction of the transfer line is realized by the action of the static contact group on the electric switch machine of the turnout, the moving contact group matched with it, and the indicating rod and other components. The electric point machine pulls the switch for positioning or anti-position locking, and whether the stop position between the switch rail and the basic rail is correct and close is indicated by the static contact system to determine whether the train passes. Therefore, it is required that the static contact ...

AI Technical Summary

Problems solved by technology

[0003] Existing static contact seats such as figure 1 As shown, in actual use, since the bottom of the terminal bolt 2, that is, the lower stud 22, is connected to the copper wire or the bridge wire 23, creepage is likely to occur between adjacent contact pieces in rain or humid environments. , causing the contact seat to leak and burn, seriously affecting normal operation; moreover, this wiring method has the phenomenon of loose copper wire or bridge wire after multiple times of use, resulting in poor electrical connection and operational failure

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