| 摘要 |
PURPOSE:To enable free setting to be attained of a position by providing an actuator to be arranged almost in parallel with the center of a rotary shaft of a rotary drum in a manner, wherein an acting direction of the actuator is orthogonal with the direction of a brake band in its connecting and releasing action, and suitably setting an arranging position of the actuator, shape of a direction change lever and its length. CONSTITUTION:A brake band 33, supported in its fixed end part 33a by an anchor end pin 6 fixed to a transmission case further in the movable end part 33b by a strut 7, is tightened to a rotary drum by moving the strut 7 in its stroke to the left direction. And a hydraulic actuator 8 is arranged so that its operating direction (b) is in a direction parallel with an axial direction (a) of the rotary drum further orthogonal with an operating direction (c) of the brake band 33. While a piston stem 8a is connected being able to transmit drive power to the strut 7 through a direction change lever 9. By this constitution, a position for providing the hydraulic actuator 8 can be freely set by suitably setting a shape of the direction change lever 9 and its length. |
