Track fork safety limiter

Abstract

The invention relates to the field of rail safety technologies, and provides a rail fork safety limiter. The rail fork safety limiter comprises rotating shafts rotatably arranged on an upper rail plate, and is characterized in that the upper end of each rotating shaft is connected to a rotating block, the lower end of the rotating shaft is connected to a limit plate through a synchronizing device, the limit plate is rotatably arranged in an open slot, and the rotating blocks are provided with corners which press against each other when two guide rails are engaged so as to enable the rotating blocks to rotate; and each rotating block is connected to a tension spring which is used for enabling the limit plate and a web plate to keep a parallel state when the guide rails are engaged and enabling the limit plate and the web plate to keep a perpendicular state when the guide rails are staggered, or each rotating block is connected to a tension spring which is used for enabling the limit plate and the web plate to form an included angle when the guide rails are staggered and enabling the limit plate and the web plate to keep a parallel state when the guide rails are engaged. The rail fork safety limiter prevents misoperation of a turnout machine through mechanical transmission of the rotating shafts, the rotating blocks, the limit plates and the tension springs, so that occurrence of a safety accident of robot drop is avoided. The rail fork safety limiter is simple in structure, low in cost and safe and reliable in limit. The rail fork safety limiter recovers by using deformation of the tension springs, and is real-time in transmission response and high in sensitivity.

Description

technical field [0001] The invention belongs to the field of rail safety technology, and in particular relates to a safety limiter for rail crossings. Background technique [0002] With the development of cable tunnels, intelligent robots used to inspect cable tunnels are also more and more widely used. The length of the cable tunnel is as short as several hundred meters, as long as several kilometers, or even tens of kilometers. Moreover, the layout of the cable tunnel is complicated and there are many branches. Since the robot only walks on a single track, when the robot is to switch from the main track to each branch track to inspect, a switch machine is used between the main track and the branch track to perform the rail switching operation. [0003] However, there is still such a problem in the above-mentioned track changing operation: the robot runs to the switch formed by the trunk track and the branch track due to performing normal tasks, but the track change is no...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a track switch safety limiter, which aims to solve the problem of robot falling accident caused by the failure of the control system of the switch machine in the existing rail change operation

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