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    • 175. 发明授权
    • Axle lift mechanism
    • 轴升降机构
    • US4634141A
    • 1987-01-06
    • US627414
    • 1984-07-03
    • Lyle M. HaganWilliam C. Pierce
    • Lyle M. HaganWilliam C. Pierce
    • B60G9/00B60G11/16B62D61/12D07B1/22F16G1/16B60G11/56
    • F16G1/16B60G11/16B60G9/00B62D61/12D07B1/22B60G2200/31B60G2202/12B60G2204/13B60G2204/1302B60G2204/422B60G2204/4502B60G2204/47
    • An axle lift mechanism (100) is used on a vehicle having a normally lowered axle/wheel assembly to automatically lift and maintain the assembly in a raised position when the vehicle is not heavily loaded. A trailing arm (62) connected to the vehicle axle (12) is pivotably coupled at one end to the vehicle frame (68) and mounts an air spring (26) at its opposing end to transmit load to the axle (12) when the air spring (26) is inflated. The lift mechanism (100) includes a flexible strap (102) secured at one end to the trailing arm (62) and wound around a pivotable cam (108). The opposing end of the strap (102) is coupled to a rod (128) adjustably engaged with a spring cup (130). A tapered coil spring (152) coaxial with the rod (128) bears against the spring cup (130) and exerts forces on the rod (128) and strap (102) sufficient to rotate the cam (108) and lift the trailing arm (62) and axle (12) to a raised position when the air spring (26) pressure is relieved. The spring cup (130) and tapered coil spring (152) are enclosed in a tubular housing (146) and a wear plate (154) is mounted to the outer spring cup surface. The flexible strap (102) comprises spaced apart cords (156) embedded in flexible polyurethane or other suitable material (158) and formed by winding a Kevlar or other suitable cable between a pair of sleeves (160).
    • 车辆提升机构(100)用于具有正常降低的车轴/车轮组件的车辆上,以便在车辆未负载时自动提升并将组件保持在升高位置。 连接到车辆轴(12)的牵引臂(62)在一端可枢转地联接到车辆框架(68),并且在其相对端处安装空气弹簧(26)以将负载传递到轴(12),当 空气弹簧(26)膨胀。 提升机构(100)包括在一端固定到后臂(62)并围绕可枢转凸轮(108)缠绕的柔性带(102)。 带(102)的相对端连接到可调节地与弹簧杯(130)接合的杆(128)。 与杆(128)同轴的锥形螺旋弹簧(152)抵靠弹簧杯(130)并且施加在杆(128)上的力并且足以使凸轮(108)旋转并提升后臂( 62)和轴(12)到空气弹簧(26)压力释放时的升高位置。 弹簧杯(130)和锥形螺旋弹簧(152)被封装在管状壳体(146)中,并且耐磨板(154)安装到外弹簧杯表面。 柔性带(102)包括嵌入在柔性聚氨酯或其它合适材料(158)中的间隔开的帘线(156),并且通过将Kevlar或其它合适的缆线卷绕在一对套筒(160)之间而形成。