US 12,264,989 B2
Wheel test device with rail wheel to contact test wheel while test wheel is rotatably supported
Sigeru Matsumoto, Tokyo (JP); Hiroshi Miyashita, Tokyo (JP); Kazuhiro Murauchi, Tokyo (JP); and Shuichi Tokita, Kanagawa (JP)
Assigned to KOKUSAI KEISOKUKI KABUSHIKI KAISHA, Tokyo (JP)
Filed by KOKUSAI KEISOKUKI KABUSHIKI KAISHA, Tama (JP)
Filed on Oct. 20, 2022, as Appl. No. 18/048,319.
Application 18/048,319 is a continuation in part of application No. PCT/JP2021/017337, filed on May 6, 2021.
Claims priority of application No. 2020-082297 (JP), filed on May 8, 2020.
Prior Publication US 2023/0054417 A1, Feb. 23, 2023
Int. Cl. G01M 17/10 (2006.01)
CPC G01M 17/10 (2013.01) 11 Claims
OG exemplary drawing
 
1. A wheel test device comprising:
a rail wheel support configured to rotatably support a rail wheel;
a wheel support configured to rotatably support a test wheel in a state where the test wheel is in contact with the rail wheel;
a first electric motor configured to rotate the rail wheel and the test wheel;
a power distributor configured to distribute power generated by the first electric motor to the rail wheel and the test wheel; and
a torque generator configured to generate torque to be applied to the test wheel,
wherein the torque generator includes:
a rotating frame rotationally driven by the first electric motor; and
a second electric motor mounted on the rotating frame,
wherein the rail wheel, the test wheel, or both the rail wheel and the test wheel is connected to the first electric motor via the torque generator,
wherein the rail wheel and the test wheel are configured to rotate in opposite directions at substantially the same peripheral speed when the operation of the second electric motor is stopped, and
wherein a rated output of the second electric motor is equal to or more than 3 kW, and moment of inertia of a rotating part of the second electric motor is equal to or less than 0.01 kg·m2.