Patent ID: 9494494
Filing Date: 2016-11-15
CPC Classification: G01M

Claim Text:
1. A calibrating apparatus that performs calibration of force components along a lateral direction of a load cell on a tire testing machine having a cylindrical rotary drum that is rotatably mounted around a shaft portion oriented in a vertical direction, and the load cell that is mounted to the shaft portion of the rotary drum and capable of measuring force applied to the rotary drum, the calibrating apparatus comprising: a hook member that is hooked on an outer peripheral edge of the rotary drum; a linear body, one end side of which is connected to the hook member; a load applying member that is connected to the other end side of the linear body and capable of generating a reference load for calibrating the load cell toward a downward direction; and a pulley device around which the linear body is wound to convert the downward force applied to the other end side of the linear body by the load applying member into an upward force on the hook member side of the linear body.