Title:
MEASURING METHOD AND DEVICE FOR VERTICAL CREEP FORCE BETWEEN WHEEL OF RAILWAY VEHICLE AND RAIL
Document Type and Number:
Japanese Patent JP2017181061
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make it possible to measure vertical creep force working on a contact portion between a wheel of a railway vehicle and a rail from a ground side.SOLUTION: Strain gauges 4A1, 4B1, 4A2, and 4B2 are pasted symmetrically forth and aft in a laid direction of a rail 1 on front and back surfaces of a web 1a in two positions P1, P2 which are each equally separated in the front and aft in a laid direction of a rail from an intermediate position Pc between adjacent sleepers 2 in a central position in height direction of the rail 1. A main stress or a main strain is measured by strain gauges 4A1, 4B1, 4A2, and 4B2 when a wheel 3 of the railway vehicle passes an intermediate position Pc. A difference of the measured main stress or the main strain is converted based on a relationship between weight of the wheel and the vertical creep force previously obtained and then the vertical creep force is obtained.EFFECT: Measured result is capable of timely feedback.SELECTED DRAWING: Figure 1
Inventors:
SHIMOKAWA YOSHIYUKI
KUBO NAHOMI
KUBO NAHOMI
Application Number:
JP2016063528A
Publication Date:
October 05, 2017
Filing Date:
March 28, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
NIPPON STEEL & SUMIKIN RAILWAY TECH CO LTD
NIPPON STEEL & SUMIKIN RAILWAY TECH CO LTD
International Classes:
G01L5/00
Domestic Patent References:
| JP2002357492A | 2002-12-13 | |||
| JPH10185666A | 1998-07-14 |
Foreign References:
| WO2015110361A2 | 2015-07-30 |
Attorney, Agent or Firm:
Tetsuya Mizogami
Susumu Yamamoto
Hideki Kawahara
Susumu Yamamoto
Hideki Kawahara