초록 ▼

The present invention is directed to a pneumatic system for (a) raising and lowering the tag axle assembly and (b) applying a variable downward force to the wheels of the tag axle assembly when the wheels are in their ground engaging position. This system disclosed is intended to be tied into the pn

The present invention is directed to a pneumatic system for (a) raising and lowering the tag axle assembly and (b) applying a variable downward force to the wheels of the tag axle assembly when the wheels are in their ground engaging position. This system disclosed is intended to be tied into the pneumatic brake system which comes standard on most heavy duty work vehicles. The entire system is also controllable from the vehicle\s cab.

대표청구항 ▼

For a work vehicle having a main frame: (a) a tag axle assembly which includes a pair of arms pivotally mounted to the vehicle, at least one tag axle, at least one tag wheel and a cross member, (b) means for moving the tag axle assembly between a first position in which the tag wheels are elevated a

For a work vehicle having a main frame: (a) a tag axle assembly which includes a pair of arms pivotally mounted to the vehicle, at least one tag axle, at least one tag wheel and a cross member, (b) means for moving the tag axle assembly between a first position in which the tag wheels are elevated and a second position in which the tag wheels engage the ground, said means for moving the tag axle assembly including a pneumatic actuator fixed to the vehicle, a pivot member secured to the cross member of the tag axle assembly, and an elongated member secured at one end to the pneumatic actuator and at its other end to said pivot member for transferring force from the pneumatic actuator to the pivot member so that the pivot member, elongated member and pneumatic actuator cause the tag axle assembly to move to said first position when said pneumatic actuator is inflated with air; and (c) pneumatic means for applying a variable downward force on the tag wheels when the tag wheels engage the ground.