Unlock instant, AI-driven research and patent intelligence for your innovation.

Overhaul method of suspension part of traction motor frame

A technology for traction motors and parts, which is applied in the maintenance field of suspension parts of cast iron machine bases, and can solve problems such as machine base scrapping and economic losses

Active Publication Date: 2016-05-11
BOMBARDIER NUG PROPULSION SYST CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, a considerable number of machine bases that could have been continuously used were forced to be scrapped, which would cause considerable economic losses

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described below with the given examples, but not limited thereto.

[0018] A method for overhauling the suspension part of a traction motor frame, which takes the suspension part of the traction motor frame to be overhauled as the overhaul object; the steps of the overhaul are:

[0019] Step a. Clean the putty on the suspension part of the traction motor frame to be overhauled, try to avoid cleaning the paint layer under the putty surface, and scan with the eddy current detection probe. If no defect is found, go directly to step f. Carry out paint repairs on the machine base, and if defects are detected, mark the signal parts of the defects found with a marker pen; among them, the frequency of the eddy current detection probe is controlled within the range of 200KHz~1000KHz, and its center frequency is 500KHz.

[0020] Since the eddy current detection probe is used for defect scanning, it is not necessary to remove the original surf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for overhauling the hanging part of a traction motor frame. The overhauling steps include: step a, cleaning the hanging part to be overhauled, scanning with an eddy current detection probe, and making a mark; step b, removing surface paint , and then use magnetic particle inspection to find defects and mark them; step c, polish the marked magnetic trace display area, and then use magnetic particle inspection to find defects. If there is no magnetic trace display, the part has been polished; if there are magnetic traces If it is displayed, then mark the magnetic mark display area found, and continue to polish the magnetic mark display area; step d, measure the remaining wall thickness of the polished part, and the actual wall thickness shall not be less than the allowable wall thickness; step e, measure the grinding Under the condition that the actual wall thickness of the part reaches the allowable wall thickness and the magnetic marks disappear, the edge of the polished part is polished to a smooth transition state; step f, touch-up paint. The invention not only has a reasonable maintenance method, but also has high reliability and high maintenance efficiency.

Description

technical field [0001] The invention relates to a method for overhauling the hanging part of a cast iron or cast steel machine base of a traction motor, in particular to a method for overhauling the hanging part of a cast iron machine base for a traction motor on an EMU. Background technique [0002] The traction motor is a component that converts mechanical energy and electrical energy. When in use, it is installed on the bogie of the locomotive / EMU, and connected with the wheel set through the transmission device. However, the impact and vibration (rail joints, turnouts, etc.) generated by the locomotive / EMU during operation are transmitted to the traction motor through the suspension part of the traction motor; therefore, the frame of the traction motor, especially the suspension part of the frame It must have sufficient mechanical strength to ensure the reliability of each component under working conditions. The frame and suspension parts of the existing traction motor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/90G01N27/9093
Inventor 何海军
Owner BOMBARDIER NUG PROPULSION SYST CO LTD