Good Quality Xcmg Motor Grader Parts - Power Steering Pump for Motor Grader spare parts – CCMIC

Power Steering Pump

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1. We supply both original and aftermarket products for you
2. From the manufacturer to the customer directly, saving your cost
3. Stable stock for normal parts
4. In Time Delivery Time, with competitive shipping cost
5. Professional and on time after service

Packing  

Carton Boxes, or according to clients’ request.

description

The grader controls the coordinated action of the blade lifting cylinder, blade tilt cylinder, and blade swing cylinder through multi-way valves to realize the adjustment of different positions and angles of the blade to meet the needs of various working conditions. The front wheel steering of the grader Realized by independent steering hydraulic system. In the current prior art, the first type of grader hydraulic system adopts a quantitative hydraulic system with a gear pump + an open center multi-way valve. When the quantitative hydraulic system has compound actions, in the case of inconsistent loads, the cylinder with a small load will act first. The heavy-loaded cylinder moves afterwards, which leads to uncoordinated combined actions of the cylinders, which cannot meet the actual needs of customers. At the same time, when the flow fails to meet the demand during compound actions, the oil will give priority to meeting the needs of the cylinders with low load, and when there is underflow The flow cannot be distributed according to the requirements of the compound action, thereby reducing the leveling accuracy during the compound action and reducing the sensitivity of manipulation. When there is no control, all the oil in the quantitative system returns to the oil tank through the middle position of the multi-way valve, resulting in throttling loss and power loss, increasing engine oil consumption and hydraulic oil heat dissipation. The steering system uses a gear pump + steering gear hydraulic system. When the steering gear pump fails, the entire vehicle loses its steering ability, and there is a certain safety hazard. In view of the problems of the quantitative hydraulic system of gear pump + open center multi-way valve, the second type of grader adopts variable plunger pump + closed center load-sensitive multi-way valve variable hydraulic system, which solves the problem of low load during compound action. When the hydraulic cylinder moves first, and when the flow is insufficient, the hydraulic fluid preferentially flows to the cylinder with a small load. The distribution is realized on demand, and the hydraulic system flow is provided on demand, reducing the heat dissipation, throttling loss and power loss of the hydraulic oil; but the steering system still Using a separate hydraulic system, the cost is relatively high, and at the same time, when the steering pump fails, the entire vehicle still loses its steering ability, which poses a certain safety hazard.

The new variable working steering hydraulic system of motor grader, including load-sensitive variable plunger pump, priority valve, shuttle valve, load-sensitive multi-way valve, steering cylinder, steering gear, check valve B and emergency steering system, steering gear, steering cylinder and The load-sensing multi-way valve is connected to the load-sensing variable plunger pump. The emergency steering system includes check valve A, accumulator, pilot check valve, pressure switch, check valve C, overflow valve, and electric pump. The new system solves the problem of uncoordinated actions when the load is inconsistent during compound actions. When the flow is undersaturated, the flow cannot be distributed as needed, and the actions are not coordinated. At the same time, it avoids the throttling loss and power loss of the excess flow during work, and reduces the hydraulic oil. Heat dissipation and fuel consumption of the engine, while improving the safety of the vehicle’s steering system.

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