Hydraulic Training of Reach Stacker Medium Level

1. Hydraulic Training of Reach StackerMedium Level Presented by Port Machinery Business Unit

2. Table of Contents Chapter 1: Schematic diagrams of hydraulic system Chapter 2: Working principles of hydraulic circuits Presented by Port Machinery Business Unit

3. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Hydraulic Schematic Diagram of Reach StackerThe hydraulic system of reach stacker is constituted by the following hydraulic circuits: 1. boom telescopic / pitching hydraulic circuit; 2. spreader hydraulic circuit; 3. steering hydraulic circuit; 4. brake hydraulic circuit; 5. cooling hydraulic circuit; 6. control hydraulic circuit; 7. movable hydraulic circuit. Boom hydraulic circuit Spreader hydraulic circuit Pitching hydraulic circuit Control hydraulic circuit Cooling hydraulic circuit Brake hydraulic circuit Steering hydraulic circuit Movable hydraulic circuit Presented by Port Machinery Business Unit

4. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Presented by Port Machinery Business Unit

5. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 二.液压系统的各回路工作原理 1. Oil supply / return system Pipeline layout diagram Presented by Port Machinery Business Unit

6. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Hydraulic pump The hydraulic pump (Parker P2105R) has the characteristics of compact structure, low noise, small pressure fluctuation, quick responding speed, high self-suction speed and high working efficiency. Summit pressure: Pmax=37MPa Nominal pressure: P=32MPa Max. displacement: V=105cm3/r Presented by Port Machinery Business Unit

7. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Double pump Gear pump Adjust the min. outlet pressure Adjust the max. outlet pressure Single pump Gearbox Presented by Port Machinery Business Unit

8. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 2. Boom telescopic circuit Telescopic valve block, fixed directly on the opening of telescopic cylinder, is used to lock the telescopic cylinder and control the telescoping speed of cylinder. To a specific diesel engine rotating ratio, the actuating speed of telescopic cylinder is directly related to the opening degree of the main valve (electro-hydraulic ratio valve). Presented by Port Machinery Business Unit

9. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Measure the pressure of rod chamber B1 Logic valve Measure the pressure of non-rod chamber One-way overflow valve Adjust the balance valve pressure to be 27MPa. S20 A1 S22 S23 S21 T Presented by Port Machinery Business Unit

10. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Pipeline layout diagram of boom telescopic system Presented by Port Machinery Business Unit

11. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Main valve The main valve (ParkerM400LS) has the characteristics of good sealing effect, strong anti-pollution performance, quick response, large flow, small pressure reduction, accurate control, convenient operation and long service life. Presented by Port Machinery Business Unit

12. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Hydraulic schematic diagram of main valve Presented by Port Machinery Business Unit

13. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 4 overflow valves A1,B1 A2,B2 Proportional valve, Also two on the opposite side Main valve Presented by Port Machinery Business Unit

14. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 3. Boom pitching system To a specific diesel engine rotating ratio, pitching speed of the machine is directly related to the opening degree of the main valve (electro-hydraulic proportional switching valve). Presented by Port Machinery Business Unit

15. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Overflow valve: 31MPa S7 Logic valve One-way valve Pressure sensor A2,B2 Left valve block T Presented by Port Machinery Business Unit

16. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits S19 Left valve block One-way valve Presented by Port Machinery Business Unit

17. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Overflow valve: 31MPa S6 Logic valve One-way valve Pressure sensor Right valve block A2,B2 Presented by Port Machinery Business Unit

18. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits S18 T Right valve block Presented by Port Machinery Business Unit

19. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Pipeline layout of boom pitching system Presented by Port Machinery Business Unit

20. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 4.Brake hydraulic system Schematic diagram of brake system Brake hydraulic system consists of two specific systems: parking hydraulic system and service hydraulic system. Presented by Port Machinery Business Unit

21. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Pipeline layout of brake system Presented by Port Machinery Business Unit

22. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits P N S3 BR1 S1 T SW3 Brake valve Presented by Port Machinery Business Unit

23. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits S9 Balancing valve: 175Bar(bottom) SW1 SW2 Ball valve Brake control valve Presented by Port Machinery Business Unit

24. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Fill N2 to the accumulator Add 100BAR of pressure SW5 brake oil filter Presented by Port Machinery Business Unit

25. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Parking brake cylinder Brake oil radiator Presented by Port Machinery Business Unit

26. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Cooling oil inlet & outlet Brake oil inlet Service brake

27. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Parking brake circuit The parking brake actuator, controlled by the parking brake solenoid valve, is of a hydraulic control and spring type. When triggered, the parking brake solenoid valve will be electrified and the pressured oil in the accumulator will run through solenoid valve and drive the parking brake actuator to stop the machine. At the same time, the pressure relay SW1 will actuate and send out a single. Then the parking brake indicator light will be turned off and electrical locking will be shut down to enable the transmission case to drive the machine. Service brake circuit The service brake actuator is also of hydraulic and spring type as the parking brake actuator. When the service brake actuator is triggered, hydraulic oil will be pumped through a service brake valve and actuate the service brake actuator to stop the machine. At the same time, electrical relay SW3 acts and sends a single to turn on the service brake indicator light. Pressure in the service brake actuator features a positive relationship with the pressure on the operation footplate in the cab, so it is very convenient for the driver to feel and control the braking force. Presented by Port Machinery Business Unit

28. Working Principles of Hydraulic Circuits Hydraulic Schematic Diagram 5.Hydraulic steering circuit Schematic diagram of steering system Presented by Port Machinery Business Unit

29. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Steering mechanism Presented by Port Machinery Business Unit

30. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Flow amplifier Presented by Port Machinery Business Unit

31. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Pipeline layout of steering system Presented by Port Machinery Business Unit

32. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 6. Boom system To spreader D port To spreader P port To spreader T port To main valve To oil-return hose Pipeline layout of boom system Presented by Port Machinery Business Unit

33. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Overflow valve: 28MPa Spreader multi- channel block Pressure-reducing valve: 14MPa Spreader multi-channel block Presented by Port Machinery Business Unit

34. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 7. Control system This circuit controls the whole hydraulic system on the machine, and it is capable of controlling the working condition and reacting speed of the boom, spreader and steering system. The main valve is an electro-hydraulic proportional reversing valve, and it contains four electro-hydraulic proportional relief valves (S1, S2, S3, S4). When the electrical control handle in the cab is operated, signal will be sent to the main electrical control center to control the opening degree of the main valve, and ultimately control the reacting speeds of the above hydraulic systems. The electrical handle’s operation degree in the cab is in a position connecting with the opening degree of the main valve, which makes it very convenient to control the hydraulic control system. Pipeline layout of control system Presented by Port Machinery Business Unit

35. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Schematic diagram of control system Presented by Port Machinery Business Unit

36. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Certain part of steering schematic diagram Presented by Port Machinery Business Unit

37. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Spreader feedback overflow valve: 17.5MPa One-way throttle valve Pressure-reducing valve: 2.5MPa Pilot overflow valve: 3.5MPa Pilot valve block Presented by Port Machinery Business Unit

38. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 8. Cooling system Hydraulic oil is most likely to be heated up under a frequently-operated condition because oil has a relatively high viscosity. Oil will be heated greatly by friction during pumping and transmitting. So in a SANY reach stacker, hydraulic cooling system is fitted to keep the oil at appropriate low temperature. When the oil temperature rising up to 60°C, cooling fan fitted in the hydraulic cooling system will be actuated, and the whole cooling system begins to work simultaneously. In oil cooling condition, high-temperature hydraulic oil from “T” outlet of the main valve will be directed to the air cooler, where the oil is cooled. When the oil is cooled to a temperature as low as 48°C, the hydraulic cooling system will be shut down automatically. Cooler To oil return steel tube Motor To oil return steel tube Pipeline layout of cooling system Presented by Port Machinery Business Unit

39. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits S15or S15a Schematic diagram of cooling system Cooling switching valve block Presented by Port Machinery Business Unit

40. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 9. Movable system (1) Cab moving hydraulic circuit When the solenoid valves S10 and S14 are electrified meanwhile, certain pressurized oils, directed from oil pump to the rod chamber of the cab moving cylinder, drive the piston rod to extend outward and the cab to move forward. As soon as the solenoid valves are dis-electrified, oil pump stops supplying oil and the cylinder will be locked under the function of dual balance valve. Thus the cab can keep its position. Similarly, when the solenoid valves S12 and S14 are electrified meanwhile, the cab moves backward. (2) Counterweight moving hydraulic circuit When the solenoid valves S13 and S14 are electrified meanwhile, certain pressurized oils, directed from oil pump to the non-rod chamber of the counterweight moving cylinder, drive the piston rod to extend outward and the counterweight to move outward. As soon as the solenoid valves are dis-electrified, oil pump stops supplying oil and the cylinder will be locked under the function of dual balance valve. Thus the counterweight can keep its position. Similarly, when the solenoid valves S12 and S13 are electrified meanwhile, the counterweight moves inward. Presented by Port Machinery Business Unit

41. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Schematic diagram of moving system Presented by Port Machinery Business Unit

42. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Spreader feedback control valve Moving feedback control valve Cab moving control valve Counterweight moving control valve Moving valve group Moving valve group Presented by Port Machinery Business Unit

43. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits 10.Spreader system Schematic diagram of spreader system Presented by Port Machinery Business Unit

44. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Overflow valve: 8Mpa Pressure-reducing valve: 3Mpa Damping valve block Presented by Port Machinery Business Unit

45. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Y16,17 Overflow valve Y18 Y15 Throttle valve ELME817 spreader slewing valve group SANY450 spreader slewing valve group Presented by Port Machinery Business Unit

46. Hydraulic Schematic Diagram Working Principles of Hydraulic Circuits Y5,6,7,8 Y1,2,3,4 Y13,14 Spreader telescopic twistlock valve group Spreader side-shifting valve group Presented by Port Machinery Business Unit

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