Method for detecting shrinkage porosity hole of root of motor barrel of rocker arm of cutting unit of coal mining machine

A technology for cutting part of a shearer and a detection method, which is applied in directions such as detecting the appearance of fluid at the leak point and using liquid/vacuum degree for liquid tightness measurement, etc. , oil leakage and other problems, to ensure the quality, low detection cost, simple operation effect

Active Publication Date: 2014-09-10
XIAN COAL MINING MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing detection methods cannot detect defects in advance, most of the defects are only found when the surface is visible to the naked eye after finishing, and some small defects cannot be identified by the naked eye
Cause oil leakage when the coal shearer is installed and loaded during the loading test or during the user's use

Method used

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  • Method for detecting shrinkage porosity hole of root of motor barrel of rocker arm of cutting unit of coal mining machine
  • Method for detecting shrinkage porosity hole of root of motor barrel of rocker arm of cutting unit of coal mining machine
  • Method for detecting shrinkage porosity hole of root of motor barrel of rocker arm of cutting unit of coal mining machine

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Embodiment Construction

[0029] Such as figure 1 , figure 2 and image 3 Shown is a detection method for shrinkage holes at the root of the rocker arm motor cylinder of the shearer cutting section, the motor cylinder 1 is located above the gear chamber 5 of the rocker arm, the upper part of the motor cylinder 1 is open and the bottom is opened There is a motor hole 1-1, and the detection method includes the following steps:

[0030] Step 1. Installation of the blocking device: the blocking device includes a plug 2 for plugging the motor hole 1-1 and a ring 2-3 fixedly installed on the upper surface of the plug 2. Preferably, the The ring 2-3 is integrally formed on the plug 2, and the plug 2 is provided with a threaded through hole 2-2 for communicating with the inside of the motor cylinder 1 and the gear chamber 5, and the outer portion of the ring 2-3 The diameter is larger than that of the motor hole 1-1, and the sealing plug 2 is put into the motor hole 1-1 from the top of the motor hole 1-1, ...

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Abstract

The invention discloses a method for detecting a shrinkage porosity hole of a root of a motor barrel of a rocker arm of a cutting unit of a coal mining machine. The motor barrel is positioned above a gear cavity of the rocker arm, an opening is arranged on the upper portion of the motor barrel, and a motor hole is arranged at the bottom of the motor barrel. The method comprises following steps: 1, mounting a plugging device; 2, injecting leaking liquid and detecting a leaking position; and 3, recycling the leaking liquid and detaching the plugging device. The method is simple and convenient to operate and low in detection cost, the shrinkage porosity hole can be found out timely, and the quality of a product is ensured.

Description

technical field [0001] The invention relates to a method for detecting shrinkage holes, in particular to a method for detecting shrinkage holes at the root of a rocker arm motor barrel of a shearer cutting part. Background technique [0002] The rocker shell of the cutting part of the shearer is affected by the existing casting technology level and shell structure, and internal casting defects such as shrinkage porosity, pores, and sand inclusions often appear at the root of the motor hole. Existing detection methods cannot detect defects in advance, and most defects are only found when the surface is visible to the naked eye after finishing, and some small defects cannot be identified by the naked eye. Cause the coal shearer to leak oil when the loading test is completed after installation or during the user's use. Contents of the invention [0003] The object of the present invention is to overcome the shortcomings in the above-mentioned prior art, and provide a detecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/06
Inventor 高新荣秦玉京屈婵婵赵晓辉史仁贵杜凤来
Owner XIAN COAL MINING MACHINERY
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