Patent ID: 9567728
Date: 2017-02-14
CPC Classifications: B60S,E02F

Claim:
1. A construction vehicle comprising: a system to stabilize the construction vehicle comprising: a frame to support the construction vehicle; a pair of stabilizing legs having distal ends, with ground-engaging shoes disposed at the distal ends of the pair of stabilizing legs; wherein the pair of stabilizing legs are pivotally connected to the frame on substantially opposing sides of the frame, such that the pair of stabilizing legs pivot upwards to a stowed position close to the construction vehicle and pivot downwards to a stabilizing position where the ground-engaging shoes engages the ground; wherein the pair of stabilizing legs telescope between a retracted position and an extended position, whereby the retracted position locates the ground-engaging shoes closer to the construction vehicle and the extended position locates the ground-engaging shoes further from the construction vehicle; a first pair of hydraulic cylinders connected to the pair of stabilizing legs to power a telescopic movement of the pair of stabilizing legs between the retracted position and the extended position; a second pair of hydraulic cylinders to connect to the pair of stabilizing legs to power a pivoting movement of the pair of stabilizing legs between the stowed position and the stabilizing position; a backhoe bucket, mounted on a stick and boom, pivotally attached to the frame, wherein the pair of stabilizing legs are adapted to overcome the forces of the backhoe bucket scooping and swinging on the stick and boom during excavation; and a controller, attached to the construction vehicle, to control the first air of hydraulic cylinders to extend one of the first pair of hydraulic cylinders and to retract the other of the first pair of hydraulic cylinders to shift the construction vehicle laterally between the ground-engaging shoes when the ground-engaging shoes are engaged with the ground, thereby allowing substantially lateral movement of the construction vehicle while the pair of stabilizing legs are in the stabilizing position.