Measuring tool

Abstract

The invention provides a measuring tool which is used for measuring the distance from the side face of a lug plate of a frog to a working edge. The measuring tool comprises a first ruler body and a first ruler frame which are connected in a sliding manner, wherein scale marks are arranged on the first ruler body; the measuring tool further comprises a second ruler frame and a second ruler body insliding connection, wherein the second ruler body is provided with scale marks, and the first ruler body and the second ruler body are connected and perpendicular to each other; the measuring tool further comprises a first positioning body which is connected with the first ruler frame and moves along with the first ruler frame and is used for abutting against the working edge of the frog for positioning, and a second positioning body which is connected with the second ruler frame and moves along with the second ruler frame and is used for abutting against the side face of the lug plate of thefrog for positioning; the first positioning body is provided with a reference surface which matches the working edge and abuts against the working edge for positioning. According to the technical scheme, the detection precision of the distance from the side face of the lug plate of the frog to the working edge is effectively improved, a workbench or other auxiliary tools do not need to be matched,and the detection convenience and the detection efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a measuring instrument. Background technique [0002] Frogs include 43kg, 50kg, 60kg, 75kg and other types of specifications. The distance from the side of the ear plate to the working edge requires a dimensional deviation of ±1mm, which is the main factor affecting the installation size of the frog gauge. [0003] At present, one way to detect the distance from the side of the ear plate of the frog to the working side is to use a special gauge block and a vernier caliper for detection. During the detection, the frog and the gauge block need to be placed on the workbench, and the positioning surfaces of the gauge block are aligned. On the side of the ear plate of the frog, a vernier caliper is placed on the top surface of the gauge block for detection. This detection method requires the use of two measuring tools, the special gauge block and the vernier caliper, which is inconv...

AI Technical Summary

Problems solved by technology

[0003] At present, one way to detect the distance from the side of the ear plate of the frog to the working side is to use a special gauge block and a vernier caliper for detection. During the detection, the frog and the gauge block need to be placed on the workbench, and the positioning surfaces of the gauge block are aligned. On the side of the ear plate of the frog, a vernier caliper is placed on the top surface of the gauge block for detection. This detection method requires the use of two measuring tools, the special gauge block and the vernier caliper, which is inconvenient to operate; and the frog and the gauge block must be placed on the working On the platform, the frog has a length and width of 7m×1m, so it must be hoisted and placed by a crane, which is extremely time-consuming; in addition, the placement surface should be flat during measurement, but the frog is a long piece, and the bottom surface (that is, the placement surface) exists objectively The uneven phenomenon can reach 2mm, and the measurement error will generally reach 0.5mm, or even more

[0004] Another current detection method integrates a special gauge block and a vernier caliper. During the detection, the caliper also needs to be placed on the workbench. Inspection, the special caliper for this kind of frog is easy to operate, can be adjusted in height, and can adapt to various rail types of frogs, but the frog must still be placed on the workbench during inspection, and the placement surface needs to be flat

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