CAB SUSPENSION AND REPOSITIONING SYSTEM

摘要

A cab suspension and repositioning system (110) for a truck includes a control arm assembly (130) having two control arms (134, 136) with distal ends pivotably attached to a truck chassis (112) and proximal ends pivotably attached to a cab (102), and one or more follower control arms (144, 146) having a distal end pivotably attached to the chassis (112) and a proximal end pivotably attached to the cab (102). Cab suspension assemblies (114, 170) releasably lock the cab (102) to the chassis (112) during operation. The control arm assembly (130) further provides motion control to the cab (102). Hydraulic cylinders (140) engage the control arm assembly (130) and are operable to move the cab (102) between an operating position adjacent the chassis and an access position away from the chassis (112) substantially without rotating the cab (102). A control system (200) powers the cylinders (140) and controls the transition between the operating and access positions.

主权项

1. A cab suspension and repositioning system for a truck having a cab and a chassis, the system comprising:
a control arm structure comprising (i) a first control arm having a distal end configured to be pivotably attached to the chassis and a proximal end configured to be pivotably attached to the cab, (ii) a second control arm having a distal end configured to be pivotably attached the chassis and a proximal end configured to be pivotably attached to the cab, and (iii) a torsion member fixedly connecting the first control arm to the second control arm, wherein the control arm structure is configured to control cab sway during operation of the truck; a third control arm having a distal end configured to be pivotably attached to the chassis and a proximal end configured to be pivotably attached to the cab; a first hydraulic cylinder having a distal end configured to be pivotably attached to the chassis and a proximal end pivotably attached to the first control arm, and a second hydraulic cylinder having a distal end configured to be pivotably attached to the chassis and a proximal end pivotably attached to the second control arm; and an hydraulic pump operably connected to the first and second hydraulic cylinders, and operable to selectively extend the first and second hydraulic cylinders; wherein extending the first and second hydraulic cylinders moves the control arm structure from a first position wherein the cab is adjacent the chassis to a second position wherein the cab is disposed away from the chassis, without pivoting the cab.