Abstract:
An axle/suspension system for the trailer of a tractor-trailer vehicle combination includes a device for leveling the trailer floor. A selected one of a pair of suspension assemblies of the system is pivotally attached to a vehicle frame bracket or hanger having vertically-oriented oval sidewall openings and vertically-spaced horizontally extending eccentric collar guide tabs. The frame hanger, upon a certain manual rotational adjustment of an eccentric alignment collar with a breaker bar, causes a bolt which pivotally attaches the suspension assembly beam to the hanger to be vertically adjusted, which in turn causes vertical adjustment of the beam and the axle attached to the beam, resulting in the raising or lowering of a sidewardly leaning trailer floor to a generally horizontally level position.
Abstract:
A spacer (30) apparatus for insulating a beam bushing assembly of an axle/suspension system from direct metal-to-metal contact with the vehicle frame hanger on which the assembly is pivotally mounted. In one embodiment, an integrally-formed one-piece apparatus includes a spacer disk portion (31) and collar portions (32, 33), whereby the collars provide a complementary fit of the spacer apparatus on the bushing assembly mounting tube, and generally prevents or minimizes relative movement between the spacer disk and bushing assembly. In other embodiments, one or more load dissipation structures mounted on or forming a part of the beam and/or its bushing assembly prevent substantially non-planar surfaces of the assembly from contacting spacer disk by increasing the bearing area of those surfaces which contact the disk. These apparatus generally eliminate excessive wear or damage to the spacer disk and possible resulting damage to the axle/suspension system.
Abstract:
A system for automatically and simultaneously controlling one or more vehicle functions by detecting the direction of movement of and the distance traveled by the vehicle. The control system includes an electronic sensor (15) mounted on a selected one of the vehicle axles (11) adjacent to and facing an anti-lock braking system tone ring of a selected one of the wheel hubs mounted on the axle. The sensor is electrically connected to an electronic control unit (30), which in turn is electrically connected to a vehicle function actuation device (40) such as a lift axle solenoid or back-up alarm actuation device. The sensor transmits direction and distance information to the electronic control unit based on the movements of a plurality of teeth formed on the tone ring. The control system is a stand-alone system that is free of interfacing with other vehicle systems, such as the anti-lock braking system.
Abstract:
A suspension component connection assembly in the form of a leaf spring connection assembly is shown to include a leaf spring having a leaf spring eye with a grooved portion positioned intermediate its axial ends. A sleeveless bushing is installed within the leaf spring eye and includes a ribbed portion designed to fit within the grooved portion. Centering and retention consistency is achieved thereby.
Abstract:
A movable subframe or slider (120) for a tractor trailer includes a pair of elongated spaced-apart parallel main members (121) and at least one generally K-shaped cross member structure (122) which extends between and is attached to the main members. Specifically, the K-shaped cross member structure includes a base member (160) which extends perpendicularly between and is attached to the main members, and further includes a pair of inclined members (161), each of which extends angularly between and is attached to a respective one of the main members and the base member. Each of the main members is adapted to be slidably mounted on a respective one of a pair of depending parallel rails of a trailer, and a retractable pin mechanism (124) enables selective positioning of the slider along the rails for variable load distribution of cargo contained in the trailer. A hanger (123) depends from each of the main members adjacent to the ends of the base member for supporting an axle/suspension system. Components of the axle/suspension system also are mounted directly on and adjacent to the inclined members. The K-shaped cross member structure enables the slider to be relatively lightweight yet have improved capability for withstanding the combined vertical and bending lateral and longitudinal loads that the slider is subjected to during operation of the tractor-trailer while being relatively inexpensive to manufacture.
Abstract:
A movable subframe or slider for semi-trailers includes a pair of spaced-apart, parallel and longitudinally extending main members. The main members are interconnected by a pair of longitudinally spaced, parallel and transversely extending horizontal cross members, a horizontally-disposed cross-brace structure, and a pair of longitudinally-spaced, parallel and vertically-disposed cross-brace structures. One or more axle/suspension systems are suspended from hangers which are mounted on and depend from the slider structure, and a retractable pin mechanism enables selective positioning of the slider relative to the trailer body for optimum load distribution and trailer versatility during vehicle operation. The integral slider structure supports the one or more axle/suspension systems, so that concentrated loads imposed on the slider via the axle/suspension systems during operation of the vehicle generally are dissipated throughout the entire slider structure.
Abstract:
An axle/suspension system for a wheeled vehicle, in which the vehicle has a frame, includes an integral arm structure that includes an attachment member for connecting the integral arm structure to the vehicle frame. A flexible transition member is connected to and extends from the attachment member and a truss structure is connected to and extends from the transition member. The flexible transition member may be generally curved or angular and enables pivotal movement of the integral arm structure and cooperates with the truss structure to distribute forces encountered by the axle/suspension system. The truss structure may include a truss member that replaces a conventional axle tube. Optionally, two axle/suspension integral arm structures may be used to capture a conventional axle tube.
Abstract:
A non-torque reactive air suspension exhibiting excellent roll stability characteristics is shown to include frame hangers mounted to frame rails extending longitudinally on opposite sides of a vehicle. Longitudinally extending beams are connected to the frame hangers at one end and extend parallel to the frame rails. At their other ends, the beams are joined by a crossbrace extending laterally across the vehicle centerline. In a central portion thereof, the beams have an axle pivot bore to which an axle clamp assembly is connected, the axle clamp assembly clamping a drive axle housing for the vehicle. The axle pivot bore is generally aligned with the drive axle. A control rod assembly is connected to suspension or frame components. Together with the beams, the control rod assembly forms a parallelogram configuration wherein the beams form the lower linkages of that configuration and the control rods included within the control rod assembly form the upper linkages of that configuration.
Abstract:
A vehicle alignment measurement apparatus includes a first reference member removably mountable on a kingpin of a trailer and a second reference member removably mountable on selected ones of the trailer frame rails typically used to lock a movable slider having front and rear axles in place beneath the trailer. A third reference member is removably mountable on selected ones of wheels mounted on the axles. A distance between the first reference member and the second reference member, which is perpendicular to the rail, is measured to determine the alignment of the frame rails relative to the kingpin. A distance between the first reference member and the third reference member, which is aligned with the axle centerline, is measured to determine the alignment of the front axle relative to the kingpin. A pair of the third reference members can be used to align the rear axle to the front axle.
Abstract:
A control system for a heavy-duty vehicle such as a dump-type straight truck includes a portable radio frequency transmitter and a radio frequency receiver. The radio frequency receiver is operatively connected to a vehicle device or assembly which performs a function such as operation of the vehicle dump bed or raising and lowering of the vehicle axle/suspension system, so that the function can be controlled from the cab of the vehicle by the radio frequency transmitter, and whereby the function occurs substantially instantaneously due to the use of radio frequency and eliminates the need for a custom hard-wired control system.