STRESS MEASUREMENT DEVICE OF RAIL

Japanese Patent JP3944300

B2

PROBLEM TO BE SOLVED: To provide a stress measurement device of rail, which is attached to, and removed from, the rail easily and which obtains a measured result of good reproducibility.
SOLUTION: When a sensor 30 is inserted into the holder 5 of a device 1, the sensor 30 is set to a state that it protrudes from the opening on the side of a rail 50 of the holder 5 by a spring 16 for sensor mounting. Then, both arms 2, 3 are opened against the urging force of springs 4, 4 for rail sandwiching so as to be covered from the upper part of the rail 50. Both arms 2, 3 are closed in a state that respective contact parts 8, 9, 10 are brought into contact with the prescribed face of the rail 50. Then, both arms 2, 3 are set in a state that they are pressed strongly to the rail 50 by the urging force of the springs 4, 4 for rail sandwiching. The sensor face 31 of the sensor 30 is set in a state that it is pressed to a rail belly part 54 via a case 32 by the spring 16 for sensor pressure. As a result, the posture of the sensor face 31 with reference to the rail belly part 54 is not changed in every measurement, and a measured result of good reproducibility can be obtained.

WO/2021/191351	METHOD FOR CALCULATING THE SHIFTING AND/OR LIFTING OF A RAILWAY TRACK, SUITABLE TAMPER
JP2009235698	NOISE REDUCING SYSTEM OF SENSOR FOR FIELD MEASUREMENT OF RAILROAD TRACK

Gen Wato
Yoshitaka Sugiyama
Hidetoshi Iwata
Kamio Kamihira

JP7027998A

July 11, 2007

March 19, 1998

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Tokai Passenger Railway Co., Ltd.

E01B35/00; G01L5/00; G01L1/00; G01N27/72; (IPC1-7): G01L1/00; E01B35/00; G01N27/72

JP58213903A
JP50011125B1
JP4262216A
JP713192Y2

Tsutomu Adachi
Toshihiro Tanaka

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