A valve block assembly for a dual-speed main winch of a static pile driver and a static pile driver thereof

Abstract

The invention discloses a valve block group for a double-speed main winch of a static pile driver and the static pile driver thereof, comprising an A valve block, a B valve block and a pressure reducing sequence valve block, wherein the A valve block comprises a first balancing valve and a shuttle valve, the B valve block comprises a second balancing valve, the pressure reducing sequence valve block comprises a first pressure reducing valve, a second pressure reducing valve and a sequence valve, the N oil port of the A valve block is connected to the M oil port of the B valve block, the P oil port of the A valve block is connected to the O oil port of the B valve block, the C oil port of the A valve block is connected to the K1 oil port of the pressure reducing sequence valve block, the K1 oil port sequentially reaches the C1 oil port of the pressure reducing sequence valve block through the first pressure reducing valve and the sequence valve, the K2 oil port of the pressure reducing sequence valve block reaches the C2 oil port of the pressure reducing sequence valve block through the second pressure reducing valve, the B oil port of the B valve block reaches the B' oil port of the B valve block through the second balancing valve, and the A oil port of the B valve block reaches the A' oil port of the A valve block through the shuttle valve and the first balancing valve. The invention is not only fully functional, but also simple in structure and modular, and is easy to use and maintain.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a valve block group for a dual-speed main winch of a static pile driver and the static pile driver. Background Art

[0002] With the in-depth development of intelligent manufacturing, the country vigorously advocates technological innovation for energy conservation and emission reduction, and the dual-speed function is being used more and more widely in various fields. In recent years, the main winch in the static pile driver has been replaced with a dual-speed main winch. When lifting heavy objects, a low-speed high-torque drive is used to ensure the power and safety during the lifting process. A high-speed low-torque drive is used during the lowering of the empty hook to save energy and time. However, the current dual-speed main winch still has the problem of poor brake and motor protection. At the same time, the valve group has a single function and a complex structure, which is not conducive to assembly and maintenance. Summary of the invention

[0003] The object of the present invention is to provide a valve block group for a dual-speed main winch of a static pile driver, so as to solve the above-mentioned problem.

[0004] To achieve the above-mentioned object, the present invention first discloses a valve block group for a dual-speed main winch of a static pile driver, comprising an A valve block, a B valve block and a pressure reducing sequence valve block, wherein the A valve block comprises a first balancing valve and a shuttle valve, the B valve block comprises a second balancing valve, the pressure reducing sequence valve block comprises a first pressure reducing valve, a second pressure reducing valve and a sequence valve, the N oil port of the A valve block is connected to the M oil port of the B valve block, the P oil port of the A valve block is connected to the O oil port of the B valve block, the C oil port of the A valve block is connected to the K1 oil port of the pressure reducing sequence valve block, the K1 oil port sequentially reaches the C1 oil port of the pressure reducing sequence valve block through the first pressure reducing valve and the sequence valve, the K2 oil port of the pressure reducing sequence valve block reaches the C2 oil port of the pressure reducing sequence valve block through the second pressure reducing valve, the B oil port of the B valve block reaches the B' oil port of the B valve block through the second balancing valve, and the A oil port of the A valve block reaches the A' oil port of the A valve block through the shuttle valve and the first balancing valve.

[0005] Furthermore, the pressure reducing sequence valve block is installed on the A valve block or the B valve block.

[0006] Furthermore, the A oil port of the A valve block and the B oil port of the B valve block are connected to a reversing valve.

[0007] Furthermore, the reversing valve is a three-position four-way reversing valve.

[0008] Then, the present invention discloses a static pile driver, comprising the valve block group for the dual-speed main winch of the static pile driver described in the above scheme, characterized in that it includes a brake and a motor, the A' oil port of the A valve block is connected to the first oil port of the motor, the B' oil port of the B valve block is connected to the second oil port of the motor, the C1 oil port of the decompression sequence valve block is connected to the brake, and the C2 oil port of the decompression sequence valve block is connected to the X oil port of the motor.

[0009] Furthermore, the return oil of the first pressure reducing valve, the second pressure reducing valve and the sequence valve are all concentrated at the T' oil port of the pressure reducing sequence valve block, and the T' oil port and the T oil port of the motor are both connected to the return oil tank.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] In the valve block assembly of the present invention, when the brake is closed, the oil in the C1 oil port can quickly return to the oil return port through the sequence valve, eliminating the semi-braking state of the brake friction plate and protecting the internal wear of the brake; at the same time, the K2 oil port enters the oil, and the C2 oil port is connected to the variable oil port X of the dual-speed motor. Since the variable oil port X of the dual-speed motor is low pressure and the K2 oil port is high pressure, connecting a pressure reducing valve between the two is more conducive to protecting the motor. Furthermore, the valve block assembly is not only fully functional, but also simple in structure and modular, and is easy to assemble, disassemble and maintain.

[0012] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0014] Figure 1 It is a schematic front view of a valve block assembly for a dual-speed main winch of a static pile driver disclosed in a preferred embodiment of the present invention;

[0015] Figure 2 It is a left side schematic diagram of a valve block assembly for a dual-speed main winch of a static pile driver disclosed in a preferred embodiment of the present invention;

[0016] Figure 3 The present invention is a schematic diagram of the hydraulic principle of a valve block group for a dual-speed main winch of a static pile driver disclosed in a preferred embodiment of the present invention.

[0017] Legend:

[0018] 1. A valve block; 11. First balancing valve; 12. Shuttle valve; 13. N oil port; 14. P oil port; 15. C oil port; 16. A' oil port; 17. A oil port;

[0019] 2. B valve block; 21. Second balance valve; 22. M oil port; 23. O oil port; 25. B oil port; 26. B' oil port;

[0020] 3. Pressure reducing sequence valve block; 31. First pressure reducing valve; 32. Second pressure reducing valve; 33. Sequence valve; 34. C1 oil port; 35. K2 oil port; 36. C2 oil port; 37. T' oil port; 38. K1 oil port;

[0021] 4. Motor; 41. X oil port; 42. T oil port;

[0022] 5. Brake;

[0023] 6. Directional valve;

[0024] 7. Return to the fuel tank. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0026] like Figure 1-3As shown, the embodiment of the present invention first discloses a valve block group for a dual-speed main winch of a static pile driver, including an A valve block 1, a B valve block 2 and a pressure relief sequence valve block 3, wherein the A valve block 1 includes a first balancing valve 11 and a shuttle valve 12, the B valve block 2 includes a second balancing valve 21, the pressure relief sequence valve block 3 includes a first pressure relief valve 31, a second pressure relief valve 32 and a sequence valve 33, the N oil port 13 of the A valve block 1 is connected to the M oil port 22 of the B valve block 2, and the P oil port 14 of the A valve block 1 is connected to the O oil port 23 of the B valve block 2, so that whether the A oil port 17 is filled with oil to rise or lower the heavy object or the B oil port 25 is filled with oil to rise or lower the heavy object, the balancing valve can be opened to make the heavy object rise and lower slowly and uniformly. When an empty hook operation is required, the X oil port 41 is controlled by the K2 oil port 35 so that the motor 4 enters a fast operation state. The C oil port 15 of the A valve block 1 is connected to the K1 oil port 38 of the pressure reducing sequence valve block 3, the K1 oil port 38 reaches the C1 oil port 34 of the pressure reducing sequence valve block 3 through the first pressure reducing valve 31 and the sequence valve 33 in turn, the K2 oil port 35 of the pressure reducing sequence valve block 3 reaches the C2 oil port 36 of the pressure reducing sequence valve block 3 through the second pressure reducing valve 32, the B oil port 25 of the B valve block 2 reaches the B' oil port 26 of the B valve block 2 through the second balancing valve 21, the A oil port 17 of the A valve block 1 reaches the A' oil port 16 of the A valve block 1 through the shuttle valve 12 and the first balancing valve 11, wherein the X oil port 41 represents the variable oil port of the motor 4, the T oil port 42 represents the drain port of the motor 4, and the A oil port 17 represents the A valve block 1 oil inlet, P oil port 14 is communicated with the pilot oil port of the balance valve on the A valve block 1, N oil port 13 is communicated with the oil inlet of the A valve block 1, C oil port 15 is communicated with the shuttle valve 12 of the A valve block 1, B oil port 25 represents the oil inlet of the B valve block 2, M oil port 22 is communicated with the pilot oil port of the balance valve on the B valve block 2, O oil port 23 is communicated with the oil inlet of the B valve block 2, K1 oil port 38 and C1 oil port 34 are the oil inlet and oil outlet of the first pressure reducing valve 31 and the sequence valve 33 respectively, K2 oil port 35 and C2 oil port 36 are the oil inlet and oil outlet of the second pressure reducing valve 32 respectively, and T' oil port 37 is the oil drain assembly oil port of the first pressure reducing valve 31, the second pressure reducing valve 32 and the sequence valve 33.

[0027] In this embodiment, the pressure reducing sequence valve block 3 is installed on the A valve block 1 or the B valve block 2 .

[0028] In this embodiment, the A oil port 17 of the A valve block 1 and the B oil port 25 of the B valve block 2 are connected to a reversing valve 6. Specifically, the reversing valve 6 is a three-position four-way reversing valve.

[0029] Then, the present invention discloses a static pile driver, including the valve block group for the dual-speed main winch of the static pile driver of the above scheme, including a brake 5 and a motor 4, the A' oil port 16 of the A valve block 1 is connected to the first oil port of the motor 4, the B' oil port 26 of the B valve block 2 is connected to the second oil port of the motor 4, the C1 oil port 34 of the pressure reducing sequence valve block 3 is connected to the brake 5, and the C2 oil port 36 of the pressure reducing sequence valve block 3 is connected to the X oil port 41 of the motor 4. Therefore, since the oil pressure of the C oil port 15 is the same as the oil pressure of the A oil port 17 and the B oil port 25, which is high pressure, the oil inlet of the brake 5 is low pressure. , connecting a pressure reducing valve between the two is more conducive to the protection of the brake 5, and a sequence valve 33 is connected after the first pressure reducing valve 31. When the brake 5 is closed, the oil in the C1 oil port 34 can quickly return to the oil return port through the sequence valve 33, eliminating the semi-braking state of the friction plate of the brake 5 and protecting the internal wear of the brake 5; the other way is a single pressure reducing valve, the K2 oil port 35 enters the oil, and the C2 oil port 36 is connected to the X oil port 41 of the dual-speed motor 4. Since the X oil port 41 of the dual-speed motor 4 is low pressure and the K2 oil port 35 is high pressure, connecting a pressure reducing valve between the two is more conducive to the protection of the motor 4. In this embodiment, the return oil of the first pressure reducing valve 31, the second pressure reducing valve 32 and the sequence valve 33 are all concentrated in the T' oil port 37 of the pressure reducing sequence valve block 3, and the T' oil port 37 and the T oil port 42 (return oil port) of the motor 4 are both connected to the return oil tank 7.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve block assembly for a dual-speed main winch of a static pile driver, characterized in that: The invention comprises an A valve block (1), a B valve block (2) and a pressure reducing sequence valve block (3), wherein the A valve block (1) comprises a first balancing valve (11) and a shuttle valve (12), the B valve block (2) comprises a second balancing valve (21), the pressure reducing sequence valve block (3) comprises a first pressure reducing valve (31), a second pressure reducing valve (32) and a sequence valve (33), the N oil port (13) of the A valve block (1) is connected to the M oil port (22) of the B valve block (2), the P oil port (14) of the A valve block (1) is connected to the O oil port (23) of the B valve block (2), the C oil port (15) of the A valve block (1) is connected to the K1 oil port (38) of the pressure reducing sequence valve block (3), and the K1 oil port (38) is connected to the pressure reducing valve (31) and the sequence valve (33) in sequence. The oil port (17) of the A valve block (1) is connected to the C1 oil port (34) of the pressure reducing sequence valve block (3); the oil port (17) of the A valve block (1) is connected to the C2 oil port (36) of the pressure reducing sequence valve block (3) through the second pressure reducing valve (32); the oil port (17) of the A valve block (1) is connected to the A' oil port (16) of the A valve block (1) through the second balancing valve (21); the oil port (17) of the A valve block (1) is connected to the A' oil port (16) of the A valve block (1) through the shuttle valve (12) and the first balancing valve (11); the pressure reducing sequence valve block (3) is mounted on the A valve block (1) or the B valve block (2); the oil port (17) of the A valve block (1) and the oil port (25) of the B valve block (2) are connected to a reversing valve (6).

2. The valve block assembly for the dual-speed main winch of a static pile driver according to claim 1, characterized in that: The reversing valve (6) is a three-position four-way reversing valve.

3. A static pile driver, characterized in that: A valve block group for a dual-speed main winch of a static pile driver comprising any one of claims 1 to 2, characterized in that it comprises a brake (5) and a motor (4), the A' oil port (16) of the A valve block (1) being connected to the first oil port of the motor (4), the B' oil port (26) of the B valve block (2) being connected to the second oil port of the motor (4), the C1 oil port (34) of the pressure reducing sequence valve block (3) being connected to the brake (5), and the C2 oil port (36) of the pressure reducing sequence valve block (3) being connected to the X oil port (41) of the motor (4).

4. The static pile driver according to claim 3, characterized in that: The return oil of the first pressure reducing valve (31), the second pressure reducing valve (32) and the sequence valve (33) are all concentrated at the T' oil port (37) of the pressure reducing sequence valve block (3), and the T' oil port (37) and the T oil port (42) of the motor (4) are both connected to an oil return tank (7).

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