| 摘要 |
has cam on arm of angled lever, this cam constituting a fixed point when the lever is at rest, separating the segments when the lever is pivoted by the parking brake control. The drum brake comprises a plate (2) carrying two brake segments (3,4) controlled by a brake cylinder (5) acting on one of the segment ends (34,44). The segment other ends (36,46) are supported by pivoting against a fixed point. The plate comprises a bearing (21) for the siting of the fixed point. An angled lever (7) with two arms (71,72) one of which (72) is connected to the parking brake control (73,77). The other arm, which is freely engaged to pivot in the bearing, comprises a cam (712) against which the segment ends are supported. The cam constitutes the fixed point when the lever is at rest, separating the segments when the lever is pivoted by the parking brake control.
|
