Anti-deflection self-locking device for the closed state of the limit frame beam

Abstract

The invention relates to a downwarping self locking device for the boundary limiting frame cross beam merging state, and belongs to the field of an auxiliary positioning device of a rail car outer contour boundary detection tooling. The device comprises a self locking bolt hook, two hanging bodies, a bolt hook blocking pin, a tension spring, a bolt hook rotating shaft and a tension spring fixing pin, wherein the self locking bolt hook comprises a bolt hook head, a bolt hook body and a bolt hook rotating arm which are integrally formed. The self locking device has the advantages that a right side cross beam or a left side cross beam can be coaxially clamped inside the clamp hook cavities of the two hanging bodies by the self locking bolt hok, so that the self sliding disengagement cannot occur, so that the self locking and fixation can be realized. Only under the sufficiently strong external force effect, the left and right cross beams can overcome the reset tension of the tension spring, so that the action state of the self locking device can be changed.

Description

technical field [0001] The invention belongs to the field of auxiliary positioning devices for rail vehicle outer contour limit detection tooling, and in particular relates to an anti-deflection self-locking device for a limit frame crossbeam closed state. Background technique [0002] Such as image 3 The rail vehicle outer contour limit detection tool shown is a train cross-sectional contour detection system perpendicular to the center line of the rail line. Invention publication number is that the Chinese patent of CN104386089A discloses a kind of " contour limit switching device suitable for various vehicle types ", such as figure 1 As shown, the contour limit switching device includes two columns 1, top beam 2, multiple positioning clamps 3, two elbow pipe fittings 4, right cross beam 5, left cross beam 6, two tee pipe fittings 7, multiple A horizontal swivel 8, a plurality of vertical swivels 9, and the top crossbeam 2 are fixedly connected to the two columns 1 throu...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the opposite ends of the left crossbeam and the right crossbeam of the existing rail vehicle outer contour limit detection tool form an independent cantilever respectively, both of them will be deflected under the action of gravity during use and cannot Maintain an ideal level state, and the coaxiality of the two will also decrease, and they cannot correspond to each other accurately, so that the outline limit plate group hanging on the left cross beam and the right cross beam will sag to varying degrees, which will affect the vehicle The technical problem of the accuracy of the outer contour limit detection, the present invention provides an anti-deflection self-locking device for the closed state of the limit frame beam

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