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    • 8. 发明授权
    • Independent wheel-lift having a chassis mounted pivot point
    • US06231294B1
    • 2001-05-15
    • US09266742
    • 1999-03-12
    • Charles E. YoungHarry Carbaugh
    • Charles E. YoungHarry Carbaugh
    • B60P312
    • B60P3/125
    • A combination tilting bed carrier and attached wheel-lift apparatus mounted on a chassis of a towing vehicle. The bed carrier includes a first pivot connected to the chassis and a first motive element extending between the chassis and the bed carrier for actuating tilting of the bed carrier about the first pivot. A wheel-lift is positioned below the bed carrier and includes a second pivot for pivotally connecting the wheel-lift to the chassis, with the first pivot and the second pivot concentrically, or substantially concentrically, aligned with each other. A second motive element extends between the wheel-lift and the bed carrier for actuating tilting of the wheel-lift about the second pivot. The second pivot may include a third motive element which may adjust the second pivot point, and which in conjunction with the second motive element, allows the wheel-lift to conform with either a positive or negative ground surface. The second motive element has a control element to maintain the wheel-lift in a predetermined position in the event of a failure of a second motive element. A third pivot is positioned on the chassis for pivotally connecting a stabilizer strut arm between the wheel-lift and the bed carrier.
    • 9. 发明授权
    • Tow truck equipped with a light weight rust resistant body assembly and
an underlift assembly
    • 拖车配备轻质防锈车身组件和隆起组件
    • US5782596A
    • 1998-07-21
    • US555032
    • 1995-11-08
    • Charles E. YoungJames J. Bartel
    • Charles E. YoungJames J. Bartel
    • B60P1/46B60P3/12
    • B60P3/125
    • A tow truck is disclosed equiped with an improved body assembly, underlift assembly and lifting boom assembly. The body assembly includes a left body unit and a right body unit. Each body unit has a structural unit and a plurality of exterior panhed to the structural unit. The structural unit is preferably formed from flanged aluminum panels that are attached by adhesive. The improved underlift assembly comprises a support arm coupled to the vehicle. A base is coupled to an end of the support arm, a boom base is pivotally attached to the base at a first pivot point and a boom is pivotally attached to the boom base at a second pivot point. A first actuator is coupled to the support arm and the boom base. The operation of the first actuator pivots the boom base with respect to the support arm. A second actuator is coupled to the boom base and the boom. The operation of the second actuator pivots the boom with respect to the boom base. The first actuator is used to position the boom during lifting operation, and the second actuator is used to position the boom into a folded rest position. The improved lifting boom includes two lifting hydraulic actuators that are coupled to the lifting boom on each side and angled inward to provide improved stability.
    • 公开了一种牵引车,其具有改进的车身组件,隆起组件和起重臂组件。 主体组件包括左主体单元和右主体单元。 每个主体单元具有结构单元和多个外部平滑至结构单元的外部单元。 结构单元优选由通过粘合剂附接的法兰铝板形成。 改进的提升组件包括联接到车辆的支撑臂。 基座联接到支撑臂的端部,在第一枢转点处,悬臂基座枢转地附接到基座,并且悬臂在第二枢转点枢转地附接到动臂基座。 第一致动器联接到支撑臂和起重臂基座。 第一执行器的操作使悬臂基座相对于支撑臂枢转。 第二致动器联接到动臂基座和起重臂。 第二执行器的操作使吊杆相对于吊杆基座枢转。 第一个致动器用于在提升操作期间定位吊杆,并且第二致动器用于将吊臂定位在折叠的静止位置。 改进的起重臂包括两个提升液压致动器,每个侧面联接到提升吊臂并向内倾斜以提供改进的稳定性。
    • 10. 发明授权
    • Over-center locking mechanism for tow truck wheel-lift or the like
    • 用于牵引车轮升降机等的过中心锁定机构
    • US5722810A
    • 1998-03-03
    • US554826
    • 1995-11-07
    • Charles E. YoungScott A. Watson
    • Charles E. YoungScott A. Watson
    • B60D1/145B60D1/56B60P3/12
    • B60P3/125
    • The present invention relates to a wheel grid assembly and vehicle towing apparatus. The wheel grid assembly includes a wheel boom and a pair of lift arms. Each lift arm consists of an extension arm segment and an engaging arm segment pivotally mounted to the extension arm segment. Each engaging arm segment is made up of an actuating arm segment and a gripping arm segment extending in different directions from the pivot point. A pair of linear actuators rotate the engaging arm segments about their pivot points to engage the wheels of a vehicle to be towed. Each linear actuator is attached to an engaging arm segment through an over-center locking mechanism. The over-center locking mechanisms lock the engaging arm segments in wheel engaging positions without aid of force from the linear actuators. The present invention also relates to a position lock mechanism and a wheel grid self-centering device. Additionally, the present invention provides a wheel spacer for creating adjustability in the lift arms to accommodate variations in wheel size, and an automatic linear actuator control line retractor assembly. The wheel grid assembly of the present invention may be incorporated with an extensible main boom, and utilized with various configurations of tow vehicles.
    • 车轮网格组件和车辆牵引装置技术领域本发明涉及一种车轮网格组件和车辆牵引装置。 车轮网格组件包括轮臂和一对提升臂。 每个提升臂由延伸臂段和可枢转地安装到延伸臂段的接合臂段组成。 每个接合臂段由致动臂段和从枢轴点沿不同方向延伸的夹臂段构成。 一对线性致动器将接合臂段围绕其枢转点旋转以接合待牵引的车辆的车轮。 每个线性致动器通过过中心的锁定机构附接到接合臂段。 超中心锁定机构将啮合臂段锁定在车轮接合位置,而不需要来自线性致动器的力。 本发明还涉及一种位置锁定机构和一个车轮网格自定心装置。 此外,本发明提供了一种用于在提升臂中产生可调节性以适应车轮尺寸的变化的轮间隔件,以及自动线性致动器控制线牵开器组件。 本发明的车轮格栅组件可以结合有可伸展的主起重臂,并且与各种构造的牵引车一起使用。