| 摘要 |
The brake comprises a pair of brake shoe bodies (1) formed of a web alone, without a rim, with at least one recess portion (2) on its outer periphery and a respective friction pad (3) comprising a friction material (3b) to be engaged with a brake drum and a backing plate (3a) adhered to the friction material (3b) inserted into each recess portion (2), the friction pads (3) being detachably fixed by pad clips (5). The number and arrangement of the friction pads provided on the outer periphery of the brake shoe body (1) is appropriately selected according to the loads received by the brake shoe bodies (1) during braking e.g. in the duo-servo brake of Figure 3 or in the leading-trailing brake of Figure 4. The recess portions (2) are shown rectangular although the bottom portions thereof may be curved (Figures 5, 6). The friction material (3b) may have convex surface, and radius of curvature thereof may be slightly smaller than that of drum. <IMAGE> |
