| 摘要 |
<p>A roller brake testing apparatus (10) comprises a base frame (12), at least one sub-frame, (16, 18), typically slideably mounted on the base frame (12), the sub- frame (16, 18) supporting a first and a second pair of rollers (20, 22) each having a diameter of 110mm to 155mm, arranged to be driven by a control means including a motor (100). At least one of the sub-frames (16, 18) carrying the pair of rollers may be moved towards and/or away from the second pair of rollers. The control means is arranged to measure or calculate the force or torque applied to turn the rollers to determine either the rolling resistance of the wheels, or the braking force if the brakes are applied. The movement of the sub-frame towards and/or away from the second pair of rollers allows the apparatus to be used with vehicles of differing axle length/wheel track width, enabling the same apparatus to be used with both on road vehicles and off road vehicles having relatively larger wheel track width. The apparatus also includes a wheel shaking assembly (26, 28).</p> |
