Railcar bogie, wheel load adjusting method thereof, and wheel load adjusting system

A wheel load adjusting method of a railcar bogie, the railcar bogie including:

• a cross beam supporting a carbody of a railcar;
• an axle box accommodating a bearing rotatably supporting a wheelset;
• a supporting member provided at an upper portion of the axle box;
• a plate spring supporting a car width direction end portion of the cross beam and extending in a car longitudinal direction, the plate spring including a car longitudinal direction end portion supported by the supporting member;
• and an axle beam coupling the axle box and the cross beam in the car longitudinal direction and opposed to the plate spring in an upward/downward direction,
• the wheel load adjusting method comprising:
• placing a pushing-up device on an installation surface of an installation seat provided at an upper surface of the axle beam, the pushing-up device being configured to push up a lower surface of the plate spring;
• forming a gap between the supporting member and the axle box by pushing up the lower surface of the plate spring by operating the pushing-up device;
• and
• inserting a liner into the gap or pulling out the liner inserted between the supporting member and the axle box.

A wheel load adjusting system comprising:

• a railcar bogie;
• and
• a pushing-up device,
• the railcar bogie including
• a cross beam supporting a carbody of a railcar;
• an axle box accommodating a bearing rotatably supporting a wheelset;
• a supporting member provided at an upper portion of the axle box;
• a plate spring supporting a car width direction end portion of the cross beam and extending in a car longitudinal direction, the plate spring including a car longitudinal direction end portion supported by the supporting member;
• and
• an axle beam coupling the axle box and the cross beam in the car longitudinal direction and opposed to the plate spring in an upward/downward direction,
• the pushing-up device being configured to push up a lower surface of the plate spring,
• an installation seat being provided at an upper surface of the axle beam, the installation seat including an installation surface on which the pushing-up device is placed.