A method and device for precise installation of pin shafts for processing wrist arms

Abstract

A method for accurately installing a pin shaft for processing a wrist arm. The wrist arm includes a flat wrist arm and an oblique wrist arm. The flat wrist arm is fixedly connected with two first connecting plates parallel to each other. The first connecting plate has several There are several second pin holes on the second connecting plate, and the method includes the following steps: S1, inserting the second connecting plate between the two first connecting plates; S2, using the camera along the first pin The axial direction of the hole shoots the first pin hole to obtain a relative position image; S3, analyzes the relative position image to obtain the light transmission area of ​​the first pin hole; S4, if the light transmission area of ​​the first pin hole is less than or equal to the preset The threshold value adjusts the position of the second connecting plate and then returns to S2. If the light transmission area of ​​the first pin hole is greater than the preset threshold value, the pin shaft is inserted into the first pin hole. The invention provides a precise installation method and device for a pin shaft used for processing a wrist arm, which can accurately install a pin hole, and further realize the connection between a flat wrist arm and an oblique wrist arm.

Description

technical field [0001] The invention relates to the technical field of wrist arm processing, in particular to a method and device for accurately installing a pin shaft for processing a wrist arm. Background technique [0002] In the traction power supply system, the wrist arm is an important part of the catenary. The wrist arm is usually installed on the upper part of the pillar to support the contact suspension and play the role of load transmission. The wrist arm is generally made of circular steel pipes with a length of It is related to factors such as the structural height of the contact suspension, the side boundary of the pillar, and the location of the pillar. With the development of technology, the structure of the wrist arm is also constantly changing, and the simplified wrist arm has gradually begun to be used. The simplified wrist arm is mainly composed of flat wrist arm, inclined wrist arm, combined load-bearing cable seat, aluminum alloy support, support connec...

AI Technical Summary

Problems solved by technology

In the existing wrist arm processing technology, the assembly process of the flat arm and the inclined arm is a difficult point, because to complete the automatic installation of the pin shaft, the first pin hole and the second pin hole must be completely aligned, which is limited by the Due to component processing errors and errors in the moving process, there is still a lack of methods in the prior art that can achieve precise installation of pin shafts

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