Mobile remote-controlled machine for demolition, loading, and digging - has hydraulic cylinders, which are fixed to permit independent control consisting of proportional, path and double return valves

摘要

The first cylinder (9) is fastened pivoted to top frame and the first arm part (3). The second cylinder (10) is fastened to frame and second arm part (4). The centre distances between the bearing points (13,18) in of first arm part and second cylinder in top frame, and the distance of the bearing points (14,19) in the second arm part, are of the same size. The hydraulic control for both cylinders consists of a proportional valve, two path valves, and two releasable double return valves. ADVANTAGE - Requires reduced time for work cycle, improved cantilever arm movement.