Variable-diameter inner wall scanning instrument for cylinder body

Abstract

The invention discloses a variable-diameter inner wall scanning instrument for a cylinder body. The variable-diameter inner wall scanning instrument comprises a supporting disc and an electric rotarytable arranged on the supporting disc, wherein a distance measuring sensor and a camera are arranged on the electric rotary table; at least three telescopic supporting rods for clamping the supportingdisc on the inner wall of the cylinder body are arranged on the supporting disc in the radial direction; and a rotary platform of the electric rotary table, the detection direction of the distance measuring sensor and the shooting direction of the camera are parallel to the telescopic directions of the supporting rods. The supporting rods on the supporting disc can extend out and are supported onthe inner wall of the cylinder body to be detected, so that a detection reference is provided, and the supporting disc is parallel to the radial direction of the cylinder body, and therefore, the laser distance measuring sensor is aligned to the inner wall of the cylinder body to realize direct measurement; the camera can synchronously observe images of the inner wall of the cylinder body, so that synchronous detection of distance measurement and image acquisition can be realized; the camera adopts a mounting mode of being aligned to the inner wall, so that image distortion is small; and measurement of cylinder bodies with different diameter specifications can be realized, and the measurement range is convenient to adjust.

Description

technical field [0001] The invention relates to the technical field of inner wall inspection, and more specifically relates to a variable-diameter inner wall scanner for a cylinder. Background technique [0002] In hydraulic devices, the hydraulic cylinder block is a heavy-duty low-speed component, which has poor working conditions, is prone to wear, and is difficult to maintain. With the development of large-scale equipment, more and more cylinders with larger diameters are used, and the corresponding inspection and inspection equipment is relatively simple, which cannot meet the needs of industrial sites. [0003] Large-scale mechanical bore micrometers are very bulky and difficult to use, and when there are many bores, a full series of bore micrometers, or even more than 10, are often required, and the cost of purchase, use, and maintenance is very high. The three-coordinate measuring machine with high measurement accuracy is too large to be used on site for industrial m...

AI Technical Summary

Problems solved by technology

[0004] At present, hydraulic cylinders are commonly used in hydraulic systems in the mining and oil field industries, with diameters ranging from 100mm to 800mm and lengths up to 6m, which are expensive. Due to low efficiency and inconvenient detection techniques, insufficient maintenance and early scrapping have caused Great waste, and fast work is easy to cause safety accidents

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