Checking fixture for track template

Abstract

The invention discloses a checking fixture for a track template, which comprises a base plate, and is characterized in that: two groups of supports are parallelly arranged on the base plate; outer sides of the two groups of supports are provided with two support upright posts respectively; the middle parts of the two groups of supports are provided with positioning tables; each support is provided with an angle scaleplate; the angle scaleplate comprises a first scaleplate and a second scaleplate which form a preset fixed angle; the front end of the first scaleplate is connected with the bottom end of the second scaleplate; connecting parts of first scaleplates and second scaleplates are hinged with the supports; and a return spring is arranged below each first scaleplate. The checking fixture solves the problem that when the concave surface of the track template is downward, the dimension of the concave surface is difficult to detect. The angle scaleplate with the fixed size extends into the concave surface of the template, the dimension of the concave surface of the template is calculated through trigonometric function conversion of a displacement distance of the scaleplate relative to a part outside the concave surface, and the checking fixture has the advantages that the checking fixture is convenient to use, easy to operate, and ensures accurate detection results.

Description

technical field [0001] The invention relates to a checking tool, in particular to a checking tool for testing the size of a concave surface. Background technique [0002] The track construction of high-speed railway requires high precision of track slabs, especially the rail platform. Because of the curved surface of the rail platform, the corresponding rail platform mold has a curved concave surface. When the rail platform template is in use, Usually the concave arc faces downward, so it brings a lot of inconvenience when measuring the size. At present, there is no effective way to precisely measure the size of the concave surface of the rail platform template when the concave surface of the rail platform template is downward. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a formwork inspection tool for a rail platform, including a bottom plate, which is characterized in that two sets of support...

AI Technical Summary

Problems solved by technology

[0002] The track construction of high-speed railways requires high precision of track slabs, especially the rail platform. Because of the curved surface of the rail platform, the corresponding rail platform mold has a curved concave surface. When the rail platform template is in use, Usually the concave arc faces downward, so it brings a lot of inconvenience when measuring the size

At present, there is no effective way to precisely measure the size of the concave surface of the rail platform template when the concave surface of the rail platform template is downward.

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