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    • 6. 发明授权
    • Wear insert for brake shoe trunnion slot
    • 耐磨插件用于制动瓦耳轴槽
    • US06364076B1
    • 2002-04-02
    • US08991592
    • 1997-12-15
    • David A. BraunJon Pidwerbecki
    • David A. BraunJon Pidwerbecki
    • F16D5116
    • F16D65/22F16D2125/30
    • A wear insert is provided for receiving trunnions on the ends of pieces used in affixing brake shoes to a brake shoe assembly. A vehicle brake shoe assembly has brake shoes which may be urged outwardly against a brake drum when a S-cam is rotated. The brake shoe has an arcuate brake table on which friction liners are installed. A brake web, comprising a pair of brake web elements, extends inwardly from the brake table toward the center of radius of the arcuate brake table. Each of these spaced apart web elements has a first and a second end, and each of the ends is provided with a trunnion receiving slot. The trunnion receiving slots at one end receive the trunnions of an anchor pin, and the trunnion receiving slots at the other end receive the trunnions of a cam follower. The wear insert is removably seated in at least one of the trunnion slots to be interposed between the slot and the trunnion. When a hardened spring steel is used for the wear insert, the insert will reduce the wear upon the slot, thereby extending the life of the brake shoe. The preferred wear insert is a U-shaped sleeve with radial lips at the ends to prevent axial movement of the sleeve in the trunnion receiving slot.
    • 提供了一种耐磨插入件,用于在用于将制动蹄固定到制动蹄组件的部件的端部处接收耳轴。 一种车辆制动蹄组件具有制动蹄,当S型凸轮旋转时,该制动蹄可以向外推靠在制动鼓上。 制动蹄具有一个弓形制动台,在其上安装有摩擦衬垫。 包括一对制动腹板元件的制动腹板从制动台朝向弧形制动工作台的半径的中心向内延伸。 这些间隔开的腹板元件中的每一个具有第一和第二端,并且每个端部设置有耳轴接收槽。 在一端的耳轴接收槽容纳锚定销的耳轴,另一端的耳轴接收槽容纳凸轮从动件的耳轴。 耐磨插件可移除地安置在至少一个耳轴槽中,以插入槽和耳轴之间。 当硬化弹簧钢用于耐磨插件时,插入件将减少槽上的磨损,从而延长制动蹄的使用寿命。 优选的磨损插入件是U形套筒,其端部具有径向唇部,以防止套筒在耳轴接收槽中的轴向移动。