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    • 1. 发明公开
    • WET BRAKE DEVICE
    • 湿式制动装置
    • EP2626590A1
    • 2013-08-14
    • EP11830555.6
    • 2011-09-29
    • Hitachi Construction Machinery Co., Ltd.
    • OKUNO NaoyukiKOMARU YutakaNIIDOME Takashi
    • F16D65/853B60T5/00E02F9/12F16D55/40F16D59/02H02K7/102
    • A plurality of rotating side brake disks (47) and a plurality of non-rotating side brake disks (48) are arranged outside in the radial direction from a motor shaft (25) in a brake case (32) while alternately overlapping with each other. A frictional material (48B) is provided on the non-rotating side brake disk (48), and an oil groove (48F) is provided in a frictional engaging surface (48E) of this frictional material (48B). It is configured such that, when a braking force is applied by a brake piston (49) to the motor shaft (25), lubricant oil (59) flowing into the brake case (32) from a lubricant oil inlet port (40) flows from the outer diameter side to the inner diameter side between the rotating side brake disk (47) and the non-rotating side brake disk (48) only through the oil groove (48F). As a result, the lubricant oil (59) having flowed into the brake case (32) efficiently cools the frictional engaging surface (48E).
    • 多个旋转侧制动板(47)和多个非旋转侧制动板(48)在交替重叠的状态下从制动箱(32)的电动机轴(25)向径向外侧 。 摩擦材料(48B)设置在非旋转侧制动盘(48)上,油槽(48F)设置在该摩擦材料(48B)的摩擦接合表面(48E)中。 在通过制动活塞(49)向电动机轴(25)施加制动力时,从润滑油流入口(40)流入制动器壳体(32)的润滑油(59) 从旋转侧制动板47与非旋转侧制动板48之间的外径侧向内径侧仅通过油槽48F。 其结果是,流入制动器壳体32的润滑油59有效地冷却摩擦接合面48E。