| 摘要 |
A level frame has an elevation from the ground which is lower than the centre of rotation for the wheels supporting it. The drive arrangement comprises an electric motor having an output shaft, a mounting ring releasably secured to the motor and a vertical support plate fixed to the frame members and having a circular opening with a centre elevated above the frame members and a flange secured in the opening. Cap screws or bolts releasably secure the ring to the flange. - A planetary reducer has an input connection to receive the output shaft, a rotatable output casing, and a mounting plate rotatably supporting the drive. Bolts releasably secure the mounting plate to the flange, and a ground-engaging drive wheel is fixed to the casing. The brake assembly comprises a brake ring secured to the casing, a sleeve fixed to the brake ring, a rotor fixed to the sleeve and a hydraulically-activated caliper carried by the support plate for engagement with the rotor.
|
