709-62-11101 VALVE ASSY

The lifting and tilting actions of the bulldozer shovel are controlled by the bulldozer shovel directional valve and flow valve inside the valve assembly. For example, when bulldozing, the operator pulls the lowering handle, the reversing valve core moves, and high-pressure oil enters the rodless chamber of the lifting cylinder through the flow valve, pushing the shovel to descend into the soil; If the angle of the shovel needs to be adjusted, the directional valve corresponding to the tilt cylinder will act, and the expansion and contraction speed of the cylinder will be controlled through the flow valve to achieve precise angle adjustment (the error can be controlled within ± 1 °).

When the bulldozer performs multiple actions simultaneously (such as lowering the bulldozer shovel, moving forward, and turning), the flow distribution valve of the valve assembly will dynamically distribute the flow, prioritizing the power demand for key actions. For example, when heavy-duty bulldozing, priority should be given to allocating flow to the bulldozer cylinder, while reserving basic flow for the walking motor to ensure that the equipment does not lag while pushing.