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    • 1. 发明授权
    • Spring brake actuator with mid-located spring
    • 弹簧制动器执行器带中位弹簧
    • US07493994B2
    • 2009-02-24
    • US11012313
    • 2004-12-16
    • Ronald S. PlantanKen E. Scheckelhoff
    • Ronald S. PlantanKen E. Scheckelhoff
    • B60T11/00
    • B60T17/083B60T17/086
    • A spring-type brake actuator for a pneumatically-operated vehicle brake is provided, with a brake actuator spring located on a front side of the actuator's intermediate flange, between a service brake actuator and a parking brake release actuator. The spring is captured between the intermediate flange and a retaining plate which is connected to the parking brake release actuator via a shaft through the intermediate flange. Because the retaining plate and parking brake release actuator are connected to one another on opposite sides of the intermediate flange, spring expansion is checked, thereby increasing safety during actuator production and servicing by virtually eliminating the potential for uncontrolled spring energy release. The actuator configuration also reduces structural loads on the rear portion of the housing and shifts spring and housing weight closer to the vehicle brake, permitting simpler designs and use of alternative materials, such as plastic or aluminum to lower costs.
    • 提供了一种用于气动车辆制动器的弹簧式制动器致动器,其中制动器致动器弹簧位于致动器中间法兰的前侧,在行车制动器致动器和驻车制动器释放致动器之间。 弹簧被夹在中间凸缘和保持板之间,该保持板经由中间凸缘通过轴连接到驻车制动器释放致动器。 由于保持板和驻车制动器释放致动器在中间法兰的相对侧彼此连接,因此检查弹簧膨胀,从而通过实际消除不受控制的弹簧能量释放的可能性来增加执行器生产和维护期间的安全性。 致动器构造还减小了壳体后部的结构负载,并使弹簧和壳体重量更接近车辆制动器,从而允许更简单的设计和使用诸如塑料或铝的替代材料以降低成本。
    • 3. 发明授权
    • Mid-power spring brake actuator having fuse-collar design for safety
    • 具有安全保险丝圈设计的中功率弹簧制动器执行器
    • US07506573B2
    • 2009-03-24
    • US11543192
    • 2006-10-05
    • Ken E. ScheckelhoffRon S. PlantanBrett S. Darner
    • Ken E. ScheckelhoffRon S. PlantanBrett S. Darner
    • F01B7/00
    • B60T17/088
    • A mid-power spring brake actuator includes first, second, and third actuator housing portions, with the first actuator housing portion interposed between the second and third housing portions. A parking brake release actuator is received within the third housing portion, and a connecting shaft is attached at a first end to the parking brake release actuator and extends through a dividing wall defined by the first housing portion. A service brake apply actuator is received within at least one of the first and second housing portions. Between the dividing wall defined by the first housing portion and a second end of the connecting shaft, a brake actuator spring is provided, and a service brake actuation chamber is interposed between the brake actuator spring and the service brake apply actuator. A parking or emergency brake de-actuation chamber is defined between the parking brake release actuator and the first housing portion. Travel of the connecting shaft as a result of force applied by the brake actuator spring upon failure of an interconnection between the connecting shaft and the parking brake release actuator is limited so as to avoid undesired or unsafe power spring expansion or release beyond the rated power spring stroke.
    • 中功率弹簧制动致动器包括第一,第二和第三致动器壳体部分,其中第一致动器壳体部分置于第二和第三壳体部分之间。 驻车制动器释放致动器被容纳在第三壳体部分内,并且连接轴在第一端附接到驻车制动器释放致动器并且延伸穿过由第一壳体部分限定的分隔壁。 在第一和第二壳体部分中的至少一个中容纳有行车制动施加致动器。 在由第一壳体部分限定的分隔壁和连接轴的第二端之间,设置有制动致动器弹簧,并且在制动致动器弹簧和行车制动器施加致动器之间设置有制动器致动室。 在驻车制动器释放致动器和第一壳体部分之间限定了停车或紧急制动解除动作室。 由于连接轴和驻车制动器释放致动器之间的互连故障而由制动器执行器弹簧施加的力的作用导致连接轴的移动受到限制,以避免不必要的或不安全的动力弹簧膨胀或释放超过额定动力弹簧 行程。
    • 5. 发明申请
    • Mid-power spring brake actuator having fuse-collar design for safety
    • 具有安全保险丝圈设计的中功率弹簧制动器执行器
    • US20080083325A1
    • 2008-04-10
    • US11543192
    • 2006-10-05
    • Ken E. ScheckelhoffRon S. PlantanBrett S. Darner
    • Ken E. ScheckelhoffRon S. PlantanBrett S. Darner
    • F01B7/00
    • B60T17/088
    • A mid-power spring brake actuator includes first, second, and third actuator housing portions, with the first actuator housing portion interposed between the second and third housing portions. A parking brake release actuator is received within the third housing portion, and a connecting shaft is attached at a first end to the parking brake release actuator and extends through a dividing wall defined by the first housing portion. A service brake apply actuator is received within at least one of the first and second housing portions. Between the dividing wall defined by the first housing portion and a second end of the connecting shaft, a brake actuator spring is provided, and a service brake actuation chamber is interposed between the brake actuator spring and the service brake apply actuator. A parking or emergency brake de-actuation chamber is defined between the parking brake release actuator and the first housing portion. Travel of the connecting shaft as a result of force applied by the brake actuator spring upon failure of an interconnection between the connecting shaft and the parking brake release actuator is limited so as to avoid undesired or unsafe power spring expansion or release beyond the rated power spring stroke.
    • 中功率弹簧制动致动器包括第一,第二和第三致动器壳体部分,其中第一致动器壳体部分置于第二和第三壳体部分之间。 驻车制动器释放致动器被容纳在第三壳体部分内,并且连接轴在第一端附接到驻车制动器释放致动器并且延伸穿过由第一壳体部分限定的分隔壁。 在第一和第二壳体部分中的至少一个中容纳有行车制动施加致动器。 在由第一壳体部分限定的分隔壁和连接轴的第二端之间,设置有制动致动器弹簧,并且在制动致动器弹簧和行车制动器施加致动器之间设置有制动器致动室。 在驻车制动器释放致动器和第一壳体部分之间限定了停车或紧急制动解除动作室。 由于连接轴和驻车制动器释放致动器之间的互连故障导致由于制动器执行器弹簧施加的力而导致连接轴的移动受到限制,以避免不必要的或不安全的动力弹簧膨胀或释放超出额定动力弹簧 行程。