An axle lift assembly includes a beam slidably coupled with and extending on a longitudinal extent of a vehicle frame. A trailing arm has a first end pivotably coupled with the beam. An axle is rotatably coupled with an intermediate portion of the trailing arm. An air spring is disposed between a se
An axle lift assembly includes a beam slidably coupled with and extending on a longitudinal extent of a vehicle frame. A trailing arm has a first end pivotably coupled with the beam. An axle is rotatably coupled with an intermediate portion of the trailing arm. An air spring is disposed between a second end of the trailing arm and the beam for absorbing an upward force from the axle. A support bracket extends down from the beam proximate the first end of the trailing arm. A pneumatic actuator is disposed between the support bracket and the trailing arm for raising the axle from a deployed position to a retracted position that substantially eliminates the upward force on the air spring from the axle.
대표청구항▼
1. An axle lift assembly comprising: a vehicle configured to support a load;a slide assembly having a member movable along a longitudinal extent of the vehicle, the slide assembly operable to secure the member relative to the vehicle at a select position along the longitudinal extent of the vehicle;
1. An axle lift assembly comprising: a vehicle configured to support a load;a slide assembly having a member movable along a longitudinal extent of the vehicle, the slide assembly operable to secure the member relative to the vehicle at a select position along the longitudinal extent of the vehicle;a swing arm having a first end pivotally coupled with the member and an opposing second end biased away from the vehicle, the swing arm configured to support an axle with a tire for contacting a ground surface;an actuator operable between the member and the swing arm for raising the axle toward the vehicle to lift the tire away from the ground surface, wherein the slide assembly and the actuator are operable to respectively adjust longitudinal and vertical positions of the axle relative to the vehicle for accommodating a condition of the load, and wherein the actuator is pneumatically adjustable between a deflated position with the tire contacting the ground surface and an inflated position with the tire lifted away from the ground surface; anda second axle supported by the member in substantially parallel alignment with the axle, wherein the second axle includes a second tire that remains in contact with the ground surface when the actuator is in the inflated position; anda component disposed between the second axle and the member for monitoring a condition indicative of a weight of the load carried by the vehicle, wherein the actuator adjusts to the inflated position when the component is indicative of the weight being less than a threshold weight. 2. The axle lift assembly of claim 1, wherein the condition of the load includes at least one of a weight of the load carried by the vehicle and a distribution of the load over the longitudinal extent of the vehicle. 3. The axle lift assembly of claim 1, wherein the slide assembly includes a locking mechanism between the member and the vehicle for releasably engaging at the select position along the longitudinal extent to prevent movement between the member and the vehicle. 4. The axle lift assembly of claim 3, wherein the locking mechanism includes a retractable lug on one of the member and the vehicle for engaging an aperture on the other of the member and the vehicle to prevent the axle from sliding longitudinally relative to the vehicle. 5. The axle lift assembly of claim 1, further comprising: a support bracket coupled with the member and protruding downward proximate the first end of the swing arm, wherein the actuator is operable between the support bracket and the swing arm. 6. The axle lift assembly of claim 1, wherein the actuator is located between the member and the swing arm. 7. An axle lift assembly comprising: a vehicle configured to support a load;a slide assembly having a member movable along a longitudinal extent of the vehicle, the slide assembly operable to secure the member relative to the vehicle at a select position along the longitudinal extent of the vehicle;a swing arm having a first end pivotally coupled with the member and an opposing second end biased away from the vehicle, the swing arm configured to support an axle with a tire for contacting a ground surface;an actuator operable between the member and the swing arm for raising the axle toward the vehicle to lift the tire away from the ground surface, wherein the slide assembly and the actuator are operable to respectively adjust longitudinal and vertical positions of the axle relative to the vehicle for accommodating a condition of the load; anda support bracket coupled with the member and protruding downward proximate the first end of the swing arm, wherein the actuator is operable between the support bracket and the swing arm, wherein the support bracket includes an upper portion proximate the first end of the swing arm and a lower portion coupled with the actuator, and wherein the vehicle comprises a trailer configured to engage a towing vehicle. 8. The axle lift assembly of claim 7, wherein the actuator is located between the member and the swing arm. 9. An axle lift assembly for a trailer that is configured to support a load, comprising: a member configured to slidably couple with the trailer for adjusting a longitudinal position of the member relative to the trailer;a swing arm having a pivot end coupled with the member;an axle rotatably coupled with the swing arm and configured to support a tire;an air spring disposed between the swing arm and the member for biasing the axle away from the member;a pneumatic actuator operable between the member and the swing arm, wherein the pneumatic actuator is adjustable between a deflated position configured for the tire to contact a ground surface and an inflated position configured to lift the tire away from the ground surface; anda second axle supported by the member in substantially parallel alignment with the axle, wherein the second axle includes a second tire that remains in contact with the ground surface when the actuator is in the inflated position. 10. The axle lift assembly of claim 9, further comprising: a locking mechanism between the member and the trailer for releasably engaging the member along a longitudinal extent of the trailer to prevent movement between the member and the trailer. 11. The axle lift assembly of claim 10, wherein the locking mechanism includes a retractable lug on one of the member and the trailer for engaging a select aperture of a plurality of apertures spaced along the other of the member and the trailer to prevent the axle from sliding longitudinally relative to the trailer. 12. The axle lift assembly of claim 9, further comprising: a support bracket coupled with the member and protruding downward proximate the pivot end of the swing arm, wherein the pneumatic actuator is operable between the support bracket and the swing arm. 13. The axle lift assembly of claim 12, wherein a lower portion of the support bracket includes a substantially planar surface coupled with and supporting the actuator. 14. The axle lift assembly of claim 9, wherein the pneumatic actuator is inflatable to raise the axle closer to the trailer from a lowered position arranged for the tire to contact the ground surface to a lifted position for the tire to rise away from the ground surface. 15. The axle lift assembly of claim 9, further comprising: a component disposed between the second axle and the member for monitoring a condition indicative of a weight of a load carried by the trailer, wherein the actuator adjusts to the inflated position when the component is indicative of the weight being less than a threshold weight. 16. The axle lift assembly of claim 9, wherein the actuator is located between the member and the swing arm. 17. An axle lift assembly for a vehicle, comprising: a member slidably adjustable along a longitudinal extent of the vehicle;a swing arm pivotably coupled with the member and biased away from the vehicle for supporting an axle;an actuator operable between the member and the arm and adjustable to raise the swing arm toward the vehicle for lifting the axle away from a ground surface, anda component for monitoring a condition indicative of a weight of a load carried by the vehicle, wherein the actuator raises the axle away from the ground surface when the component is indicative of the weight being less than a threshold weight. 18. The axle lift assembly of claim 17, wherein the component includes an air pressure sensor for monitoring an air pressure of an air spring of a second axle supporting the vehicle. 19. The axle lift assembly of claim 17, further comprising: a locking assembly having a retractable lug coupled with the member for selectively engaging an aperture on a frame member of the vehicle to prevent the member from sliding relative to the frame member. 20. The axle lift assembly of claim 17, wherein the actuator is located between the member and the swing arm.
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이 특허에 인용된 특허 (14)
Chalin, Thomas N.; Dodd, Cully B.; Hudson, Herbert D., Adjustable run height lift axle suspension system.
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