Combined excavator and loader - has digging wheel at front oscillated from side to side by hydraulic cylinders

摘要

The excavating and loading system includes an excavating wheel assembly at the front and conveyors for conveying material from the excavating wheel assembly to the rear of the vehicle. The excavating wheel assembly has an excavating wheel which is narrower than the overall width of the following portion of the system. A yoke engages the ends of the excavating wheel and supports the wheel in a horizontal position. The yoke is pivotally attached to the vehicle and hydraulic cylinders are provided to oscillate the excavating wheel assembly from side-to-side transverse to the direction of movement of the vehicle to form a trench wider than the excavating wheel assembly itself.