Hydraulic station assembly of drilling machine
By installing the relief valve and oil return pipeline in the drilling rig hydraulic station assembly, the problem of unstable oil pressure during the oil cylinder return process is solved, and the stable operation of the hydraulic system and the extension of the equipment life are achieved.
Patent Information
- Application Number
- CN202422008277.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-19
AI Technical Summary
During the oil cylinder return process of the existing drilling rig hydraulic station assembly, due to unstable oil pressure, it is easy to cause impact and vibration of the hydraulic system, and damage seals and other key components.
By installing an overflow valve on multiple pipes, the oil pressure is stabilized and the overflowed hydraulic oil is re-transmitted back to the oil tank. The oil return pipeline includes a return pipe, an integrated cooler and an oil return filter to ensure the return filtration and pressure of the hydraulic oil are stable.
It effectively stabilizes the hydraulic return speed, reduces the impact and vibration of the hydraulic system, extends the service life of the equipment, and prevents damage to seals and key components.
Smart Images
Figure CN222910393U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drilling rig hydraulic equipment, in particular to a drilling rig hydraulic station assembly. Background Art
[0002] In the field of modern engineering machinery, drilling rigs, as an important foundation construction equipment, are widely used in many industries such as construction, transportation, and energy. As one of the core components of the drilling rig, the drilling rig hydraulic station assembly is responsible for providing power transmission and control, and its performance directly affects the operating efficiency and safety of the drilling rig.
[0003] Although the current design of drilling rig hydraulic station assembly is relatively mature, there are still some shortcomings in practical application. Especially in the process of oil cylinder return, the return speed is unstable due to oil pressure, which can easily cause shock and vibration of the hydraulic system, affecting the stability and life of the equipment. In addition, the traditional hydraulic station design often lacks an effective buffer mechanism during the process of oil cylinder return to the oil storage cylinder, causing the oil to directly impact the bottom of the oil storage cylinder, damaging seals and other key components. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a drilling rig hydraulic station assembly.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a drilling rig hydraulic station assembly, including a hydraulic oil tank and a diesel engine, the output end coupling of the diesel engine is equipped with a hydraulic pump and a gear pump, the oil outlet end of the hydraulic pump is equipped with a propulsion cylinder and a rotating motor, and the oil outlet end of the gear pump is equipped with a loosening cylinder, a clamping cylinder and a clamping loose cylinder; a first oil supply pipeline is installed between the hydraulic oil tank, the hydraulic pump, the propulsion cylinder and the rotating motor; a second oil supply pipeline is installed between the hydraulic oil tank, the gear pump, the loosening cylinder, the clamping cylinder and the clamping loose cylinder; an oil return pipeline is installed between the hydraulic oil tank, the propulsion cylinder, the rotating motor, the loosening cylinder, the clamping cylinder and the clamping loose cylinder.
[0006] Further: the first oil supply pipeline includes a first oil suction pipe, a first oil outlet pipe, a first one-way valve, a first proportional reversing valve, a second proportional reversing valve, a second overflow valve and a third overflow valve. The oil inlet end of the hydraulic pump is installed with a first oil suction pipe, and the oil inlet end of the first oil suction pipe is installed inside the hydraulic oil tank. The oil outlet end of the hydraulic pump is installed with a first oil outlet pipe, and a first one-way valve is installed on the first oil outlet pipe. The oil outlet end of the first oil outlet pipe is connected to a first proportional reversing valve and a second proportional reversing valve. The A end of the first proportional reversing valve is connected to the thrust cylinder, and the P end of the second proportional reversing valve is connected to the rotating motor. The first overflow valve and the second overflow valve are installed on the first oil outlet pipe in sequence, and the first overflow valve is located at the P end of the second proportional reversing valve, and the second overflow valve is located at the P end of the first proportional reversing valve.
[0007] Further: two third overflow valves are installed at the A end of the second proportional reversing valve, the third overflow valve is connected to the third one-way valve through a pipeline, a first shuttle valve is installed between the two third one-way valves, a first overflow pipeline is installed on the first shuttle valve, a second shuttle valve is installed between the first proportional reversing valve and the thrust cylinder, a second overflow pipeline is installed on the second shuttle valve, a third shuttle valve is installed between the first overflow pipeline and the second overflow pipeline, and a fourth overflow valve is connected to the pipeline on the third shuttle valve.
[0008] Further: the second oil supply pipeline includes a second oil suction pipe, a second oil outlet pipe, a second one-way valve, a first solenoid reversing valve, a second solenoid reversing valve and a third solenoid reversing valve. The oil inlet end of the gear pump is installed with a second oil suction pipe, the oil inlet end of the second oil suction pipe is installed inside the hydraulic oil tank, the oil outlet end of the gear pump is installed with a second oil outlet pipe, the second oil outlet pipe is installed with a second one-way valve, the oil outlet end of the second one-way valve is installed with the first solenoid reversing valve, the second solenoid reversing valve and the third solenoid reversing valve in sequence, the A end of the first solenoid reversing valve is connected to the loosening cylinder, the A end of the second solenoid reversing valve is connected to the clamping cylinder, and the A end of the third solenoid reversing valve is connected to the loosening clamping cylinder.
[0009] Further: the oil return pipeline includes an oil return pipe, an integrated cooler and an oil return filter. The T-ends of the second proportional reversing valve, the first proportional reversing valve, the first solenoid reversing valve, the second solenoid reversing valve and the third solenoid reversing valve are equipped with oil return pipes. An integrated cooler is installed on the oil return pipe. The pipeline on the integrated cooler is connected to an oil return filter, and the oil return filter is connected to the hydraulic oil tank pipeline.
[0010] Further: a sixth overflow valve is installed between the third solenoid reversing valve and the loosely clamped cylinder, a seventh overflow valve is installed between the second solenoid reversing valve and the clamping cylinder, the sixth overflow valve and the seventh overflow valve pipelines are connected to the return oil pipe, the fourth solenoid reversing valve and the fifth overflow valve are fixedly connected to the second oil suction pipe, and the fifth overflow valve pipeline is connected to the return oil pipe.
[0011] Further: an air filter is installed at the oil inlet end of the hydraulic oil tank, an oil drain ball valve is installed at the oil outlet end of the hydraulic oil tank, a hydraulic gauge is installed on the outer wall of the hydraulic oil tank, a liquid level relay is fixedly installed inside the hydraulic oil tank, a temperature controller is fixedly installed inside the hydraulic oil tank, and oil suction filters are installed at the oil inlet ends of the first oil suction pipe and the second oil suction pipe.
[0012] Further: a cover plate is installed between the second oil outlet pipe and the oil return pipe.
[0013] The utility model has the following beneficial effects:
[0014] 1. Compared with the prior art, by arranging a hydraulic oil tank, a second oil outlet pipe, a rotary motor, an oil return pipe, a third overflow valve, a third check valve, a first shuttle valve, a first overflow pipe, a second shuttle valve, a second overflow pipe, a third shuttle valve, a fourth overflow valve, a fourth electromagnetic reversing valve, a fifth overflow valve, a sixth overflow valve and a seventh overflow valve, when in use, the third overflow valve can stabilize the oil pressure entering the rotary motor, and then the overflowed hydraulic oil is allowed to enter the first shuttle valve through the third check valve, and then the overflowed hydraulic pressure is allowed to enter the first overflow pipe through the first shuttle valve, and at the same time, the high-pressure hydraulic oil is allowed to enter the second overflow pipe through the control of the second shuttle valve, and then the first overflow pipe and the second overflow pipe are connected. After derrick is finished, shut down and put into operation the derrick of derrick pin, and then turn on derrick pin to stop the derrick of derrick pin.In addition, after derrick pin is turned on, shut down and put into operation the derrick of derrick pin. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall system structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the system structure of the hydraulic oil tank in the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the first oil supply pipeline system in the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the oil return pipeline system in the utility model.
[0019] Legend:
[0020] 1. Hydraulic oil tank; 101. Air filter; 102. Oil drain ball valve; 103. Hydraulic gauge; 104. Liquid level relay; 105. Temperature controller; 2. Diesel engine; 3. Hydraulic pump; 4. Gear pump; 5. First oil suction pipe; 6. Second oil suction pipe; 7. First oil outlet pipe; 701. First check valve; 8. Second oil outlet pipe; 801. Second check valve; 9. First proportional reversing valve; 10. Second proportional reversing valve; 11. Propulsion cylinder; 12. Rotation motor; 13. First solenoid reversing valve; 14. Second solenoid reversing valve; 15. Third solenoid reversing valve; 16. Loosen the oil cylinder; 17. Clamp the oil cylinder; 18. Clamp the loose oil cylinder; 19. Cover plate; 20. Return oil pipe; 21. Integrated cooler; 22. Return oil filter; 23. First overflow valve; 24. Second overflow valve; 25. Third overflow valve; 26. Third non-return valve; 27. First shuttle valve; 28. First overflow pipe; 29. Second shuttle valve; 30. Second overflow pipe; 31. Third shuttle valve; 32. Fourth overflow valve; 33. Fourth solenoid reversing valve; 34. Fifth overflow valve; 35. Oil suction filter; 36. Sixth overflow valve; 37. Seventh overflow valve. DETAILED DESCRIPTION
[0021] Reference Figure 1-4 The drilling rig hydraulic station assembly provided by the utility model includes a hydraulic oil tank 1 and a diesel engine 2. The output end coupling of the diesel engine 2 is equipped with a hydraulic pump 3 and a gear pump 4. The oil outlet end of the hydraulic pump 3 is equipped with a propulsion cylinder 11 and a rotation motor 12. The oil outlet end of the gear pump 4 is equipped with a loosening cylinder 16, a clamping cylinder 17 and a loose clamping cylinder 18; a first oil supply pipeline is installed between the hydraulic oil tank 1, the hydraulic pump 3, the propulsion cylinder 11 and the rotation motor 12; a second oil supply pipeline is installed between the hydraulic oil tank 1, the gear pump 4, the loosening cylinder 16, the clamping cylinder 17 and the loose clamping cylinder 18; an oil return pipeline is installed between the hydraulic oil tank 1, the propulsion cylinder 11, the rotation motor 12, the loosening cylinder 16, the clamping cylinder 17 and the loose clamping cylinder 18.
[0022] When in use, start the diesel engine 2, and drive the hydraulic pump 3 and the gear pump 4 to start through the diesel engine 2, and then let the hydraulic oil in the hydraulic oil tank 1 flow into the propulsion cylinder 11 and the rotation motor 12 through the first oil supply pipeline, so as to control the rotation and propulsion of the drill rod, and then let the hydraulic oil in the hydraulic oil tank 1 flow into the loosening cylinder 16, the clamping cylinder 17 and the loosening clamping cylinder 18 through the second oil supply pipeline, so as to clamp the drill rod, and at the same time, the refluxed hydraulic oil flows back into the hydraulic oil tank 1 through the reflux pipeline.
[0023] The first oil supply pipeline includes a first oil suction pipe 5, a first oil outlet pipe 7, a first non-return valve 701, a first proportional reversing valve 9, a second proportional reversing valve 10, a second overflow valve 24 and a third overflow valve 25. The first oil suction pipe 5 is installed at the oil inlet end of the hydraulic pump 3. The oil inlet end of the first oil suction pipe 5 is installed inside the hydraulic oil tank 1. The first oil outlet pipe 7 is installed at the oil outlet end of the hydraulic pump 3. The first non-return valve 701 is installed on the first oil outlet pipe 7. The oil outlet end of the first oil outlet pipe 7 is connected to the first proportional reversing valve 9 and the second proportional reversing valve 10. The A end of the first proportional reversing valve 9 is connected to the thrust cylinder 11, and the P end of the second proportional reversing valve 10 is connected to the rotary motor 12. The first overflow valve 23 and the second overflow valve 24 are installed on the first oil outlet pipe 7 in sequence. The first overflow valve 23 is located at the P end of the second proportional reversing valve 10, and the second overflow valve 24 is located at the P end of the first proportional reversing valve 9.
[0024] When in use, turn on the hydraulic pump 3, let the hydraulic oil in the hydraulic oil tank 1 enter the first oil outlet pipe 7 through the first oil suction pipe 5, and then the hydraulic oil is discharged into the first proportional reversing valve 9 and the second proportional reversing valve 10 in sequence through the first oil outlet pipe 7, and a first check valve 701 is installed on the first oil outlet pipe 7 to prevent the hydraulic oil from flowing back. Then the hydraulic oil entering the second proportional reversing valve 10 enters the rotary motor 12 from the output end, so that the rotary motor 12 starts to rotate, which can drive the drill rod to rotate. The hydraulic oil entering the first proportional reversing valve 9 enters the thrust cylinder 11 from the output end to push the drill rod to move downward. At the same time, the oil pressure can be stabilized by the first overflow valve 23 and the second overflow valve 24.
[0025] Two third overflow valves 25 are installed at the A end of the second proportional reversing valve 10, and the third overflow valve 25 is connected to the third check valve 26 through a pipeline, a first shuttle valve 27 is installed between the two third check valves 26, and a first overflow pipeline 28 is installed on the first shuttle valve 27, a second shuttle valve 29 is installed between the first proportional reversing valve 9 and the thrust cylinder 11, a second overflow pipeline 30 is installed on the second shuttle valve 29, a third shuttle valve 31 is installed between the first overflow pipeline 28 and the second overflow pipeline 30, and a fourth overflow valve 32 is connected to the pipeline of the third shuttle valve 31.
[0026] The third overflow valve 25 can stabilize the oil pressure entering the rotary motor 12, and then the overflowing hydraulic oil is allowed to enter the first shuttle valve 27 through the third one-way valve 26, and then the overflowing hydraulic pressure is allowed to enter the first overflow pipe 28 through the first shuttle valve 27. At the same time, the high-pressure hydraulic oil is allowed to enter the second overflow pipe 30 through the control of the second shuttle valve 29. Then the hydraulic oil in the first overflow pipe 28 and the second overflow pipe 30 is controlled to flow back to the hydraulic oil tank 1 through the third shuttle valve 31, and the pressure of the hydraulic oil will be stabilized through the fourth overflow valve 32 during the reflux filtration.
[0027] The second oil supply pipeline includes a second oil suction pipe 6, a second oil outlet pipe 8, a second one-way valve 801, a first solenoid reversing valve 13, a second solenoid reversing valve 14 and a third solenoid reversing valve 15. The oil inlet end of the gear pump 4 is installed with the second oil suction pipe 6, and the oil inlet end of the second oil suction pipe 6 is installed inside the hydraulic oil tank 1. The oil outlet end of the gear pump 4 is installed with the second oil outlet pipe 8, and the second one-way valve 801 is installed on the second oil outlet pipe 8. The oil outlet end of the second one-way valve 801 is installed with the first solenoid reversing valve 13, the second solenoid reversing valve 14 and the third solenoid reversing valve 15 in sequence. The A end of the first solenoid reversing valve 13 is connected to the loosening cylinder 16, the A end of the second solenoid reversing valve 14 is connected to the clamping cylinder 17, and the A end of the third solenoid reversing valve 15 is connected to the loosening clamping cylinder 18.
[0028] When in use, turn on the gear pump 4 to allow the hydraulic oil in the hydraulic oil tank 1 to enter the second oil outlet pipe 8 through the second oil outlet pipe 8. The second one-way valve 801 installed on the second oil outlet pipe 8 can prevent the hydraulic oil from flowing back. At the same time, the oil pressure can be stabilized through the fifth overflow valve 34. Then the hydraulic oil in the second oil outlet pipe 8 enters the first solenoid reversing valve 13, the second solenoid reversing valve 14 and the third solenoid reversing valve 15 in turn, and then the hydraulic oil enters the loosening cylinder 16, the clamping cylinder 17 and the clamping and loosening cylinder 18, so as to achieve the clamping and loosening of the drill pipe.
[0029] The oil return pipeline includes an oil return pipe 20, an integrated cooler 21 and an oil return filter 22. The T end of the second proportional reversing valve 10, the first proportional reversing valve 9, the first solenoid reversing valve 13, the second solenoid reversing valve 14 and the third solenoid reversing valve 15 is installed with the oil return pipe 20. The integrated cooler 21 is installed on the oil return pipe 20. The pipeline on the integrated cooler 21 is connected to the oil return filter 22. The oil return filter 22 is connected to the pipeline of the hydraulic oil tank 1.
[0030] When in use, the return oil of the second proportional reversing valve 10, the first proportional reversing valve 9, the first solenoid reversing valve 13, the second solenoid reversing valve 14 and the third solenoid reversing valve 15 enters the integrated cooler 21 for cooling through the return oil pipe 20 connected to the return oil end, and then passes through the return oil filter 22 for filtration before being discharged back into the hydraulic oil tank 1. At the same time, the output ends of the second solenoid reversing valve 14 and the third solenoid reversing valve 15 are both equipped with a second shuttle valve 29 to stabilize the oil pressure, and the overflow hydraulic oil therein can be directly discharged into the return oil pipe 20 through a pipeline.
[0031] A sixth overflow valve 36 is installed between the third solenoid reversing valve 15 and the loose clamping cylinder 18, a seventh overflow valve 37 is installed between the second solenoid reversing valve 14 and the clamping cylinder 17, the sixth overflow valve 36 and the seventh overflow valve 37 are connected to the return oil pipe 20 by pipeline, the fourth solenoid reversing valve 33 and the fifth overflow valve 34 are fixedly connected to the second oil suction pipe 6, and the fifth overflow valve 34 is connected to the return oil pipe 20 by pipeline.
[0032] When in use, the oil pressure can be stabilized by the sixth overflow valve 36 and the seventh overflow valve 37, and the overflowed hydraulic oil can be delivered to the return oil pipe 20; through the cooperation of the fourth solenoid reversing valve 33 and the fifth overflow valve 34, the oil pressure of the second oil outlet pipe 8 can be stabilized, and the overflowed hydraulic oil can be delivered to the return oil pipe 20.
[0033] An air filter 101 is installed at the oil inlet end of the hydraulic oil tank 1, an oil drain ball valve 102 is installed at the oil outlet end of the hydraulic oil tank 1, a hydraulic gauge 103 is installed on the outer wall of the hydraulic oil tank 1, a liquid level relay 104 is fixedly installed inside the hydraulic oil tank 1, a temperature controller 105 is fixedly installed inside the hydraulic oil tank 1, and oil suction filters 35 are installed at the oil inlet ends of the first oil suction pipe 5 and the second oil suction pipe 6.
[0034] When in use, the interior of the hydraulic cylinder 1 can be filled with oil through the air filter 101; the hydraulic oil in the hydraulic cylinder 1 can be released through the oil drain ball valve 102; the hydraulic oil level in the hydraulic cylinder 1 can be observed through the hydraulic gauge 103; the hydraulic level in the hydraulic cylinder 1 can be detected in real time through the liquid level relay 104; the temperature controller 105 can control the hydraulic oil temperature in the hydraulic cylinder 1.
[0035] A cover plate 19 is installed between the second oil outlet pipe 8 and the oil return pipe 20 .
[0036] After long-term use, the internal pipeline can be cleaned by removing the cover plate 19.
[0037] Working principle: First, the diesel engine 2 is started, and the hydraulic pump 3 and the gear pump 4 are started by the diesel engine 2, so that the hydraulic oil inside the hydraulic oil tank 1 is sucked into the inside of the oil suction pipe 5.
[0038] Next, the hydraulic oil entering the hydraulic pump 3 is discharged into the first proportional reversing valve 9 and the second proportional reversing valve 10 in sequence through the first oil outlet pipe 7, and a first non-return valve 701 is installed on the first oil outlet pipe 7 to prevent the hydraulic oil from flowing back. Then, the hydraulic oil entering the second proportional reversing valve 10 enters the rotary motor 12 from the output end, so that the rotary motor 12 starts to rotate, which can drive the drill rod to rotate, and then the return oil of the rotary motor 12 is discharged back to the hydraulic oil tank 1. At the same time, the oil pressure entering the rotary motor 12 can be stabilized through the third overflow valve 25. Then, the overflowing hydraulic oil is allowed to enter the first shuttle valve 27 through the third non-return valve 26, and then the overflowing hydraulic oil is allowed to enter the first overflow pipe 28 through the first shuttle valve 27;
[0039] The hydraulic oil entering the first proportional reversing valve 9 enters the thrust cylinder 11 from the output end to push the drill rod downward. At the same time, the high-pressure hydraulic oil enters the second overflow pipe 30 through the control of the second shuttle valve 29. Then, the hydraulic oil in the first overflow pipe 28 and the second overflow pipe 30 is controlled to flow back to the hydraulic oil tank 1 through the third shuttle valve 31. The pressure of the hydraulic oil will be stabilized by the fourth overflow valve 32 during the reflux filtration.
[0040] Then, the hydraulic oil entering the gear pump 4 enters the second oil outlet pipe 8. The second one-way valve 801 installed on the second oil outlet pipe 8 can prevent the hydraulic oil from flowing back. At the same time, the oil pressure can be stabilized through the fifth overflow valve 34. Then the hydraulic oil in the second oil outlet pipe 8 enters the first solenoid reversing valve 13, the second solenoid reversing valve 14 and the third solenoid reversing valve 15 in turn, and then the hydraulic oil enters the loosening cylinder 16, the clamping cylinder 17 and the clamping and loosening cylinder 18, so as to realize the clamping and loosening of the drill rod.
[0041] During use, the return oil of the second proportional reversing valve 10, the first proportional reversing valve 9, the first solenoid reversing valve 13, the second solenoid reversing valve 14 and the third solenoid reversing valve 15 enters the integrated cooler 21 for cooling through the return oil pipe 20 connected to the return oil end, and then is filtered by the return oil filter 22 before being discharged back to the hydraulic oil tank 1. At the same time, the output ends of the second solenoid reversing valve 14 and the third solenoid reversing valve 15 are both equipped with a second shuttle valve 29 to stabilize the oil pressure, and the overflow hydraulic oil therein can be directly discharged into the return oil pipe 20 through a pipeline.
[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A drilling rig hydraulic station assembly, comprising a hydraulic oil tank (1) and a diesel engine (2), characterized in that: The output end of the diesel engine (2) is coupled with a hydraulic pump (3) and a gear pump (4); the oil outlet end of the hydraulic pump (3) is equipped with a propulsion cylinder (11) and a rotation motor (12); the oil outlet end of the gear pump (4) is equipped with a loosening cylinder (16), a clamping cylinder (17) and a loose clamping cylinder (18); A first oil supply pipeline is installed between the hydraulic oil tank (1), the hydraulic pump (3), the propulsion cylinder (11) and the rotary motor (12); A second oil supply pipeline is installed between the hydraulic oil tank (1), the gear pump (4), the loosening oil cylinder (16), the clamping oil cylinder (17) and the clamping loosening oil cylinder (18); An oil return pipeline is installed between the hydraulic oil tank (1), the propulsion oil cylinder (11), the rotation motor (12), the loosening oil cylinder (16), the clamping oil cylinder (17) and the clamping loosening oil cylinder (18).
2. The drilling rig hydraulic station assembly according to claim 1, characterized in that: The first oil supply pipeline comprises a first oil suction pipe (5), a first oil outlet pipe (7), a first non-return valve (701), a first proportional reversing valve (9), a second proportional reversing valve (10), a second overflow valve (24) and a third overflow valve (25); the oil inlet end of the hydraulic pump (3) is provided with the first oil suction pipe (5); the oil inlet end of the first oil suction pipe (5) is installed inside the hydraulic oil tank (1); the oil outlet end of the hydraulic pump (3) is provided with the first oil outlet pipe (7); the first non-return valve (701) is installed on the first oil outlet pipe (7); The oil outlet end of an oil outlet pipe (7) is connected to a first proportional reversing valve (9) and a second proportional reversing valve (10); the A end of the first proportional reversing valve (9) is connected to a propulsion cylinder (11); the P end of the second proportional reversing valve (10) is connected to a rotary motor (12); a first overflow valve (23) and a second overflow valve (24) are sequentially mounted on the first oil outlet pipe (7); the first overflow valve (23) is located at the P end of the second proportional reversing valve (10); and the second overflow valve (24) is located at the P end of the first proportional reversing valve (9).
3. The drilling rig hydraulic station assembly according to claim 2, characterized in that: Two third overflow valves (25) are installed at the A end of the second proportional reversing valve (10), a third check valve (26) is connected to the third overflow valve (25) through a pipeline, a first shuttle valve (27) is installed between the two third check valves (26), a first overflow pipeline (28) is installed on the first shuttle valve (27), a second shuttle valve (29) is installed between the first proportional reversing valve (9) and the propulsion cylinder (11), a second overflow pipeline (30) is installed on the second shuttle valve (29), a third shuttle valve (31) is installed between the first overflow pipeline (28) and the second overflow pipeline (30), and a fourth overflow valve (32) is connected to the pipeline of the third shuttle valve (31).
4. The drilling rig hydraulic station assembly according to claim 1, characterized in that: The second oil supply pipeline comprises a second oil suction pipe (6), a second oil outlet pipe (8), a second non-return valve (801), a first electromagnetic reversing valve (13), a second electromagnetic reversing valve (14) and a third electromagnetic reversing valve (15); the oil inlet end of the gear pump (4) is provided with the second oil suction pipe (6); the oil inlet end of the second oil suction pipe (6) is installed inside the hydraulic oil tank (1); the oil outlet end of the gear pump (4) is provided with the second oil outlet pipe (8); the second oil outlet pipe (8) A second one-way valve (801) is installed on the oil outlet end of the second one-way valve (801), and a first electromagnetic reversing valve (13), a second electromagnetic reversing valve (14) and a third electromagnetic reversing valve (15) are installed in sequence. The A end of the first electromagnetic reversing valve (13) is connected to the loosening cylinder (16), the A end of the second electromagnetic reversing valve (14) is connected to the clamping cylinder (17), and the A end of the third electromagnetic reversing valve (15) is connected to the clamping loosening cylinder (18).
5. The drilling rig hydraulic station assembly according to claim 2, characterized in that: The oil return pipeline comprises an oil return pipe (20), an integrated cooler (21) and an oil return filter (22); the T ends of the second proportional reversing valve (10), the first proportional reversing valve (9), the first electromagnetic reversing valve (13), the second electromagnetic reversing valve (14) and the third electromagnetic reversing valve (15) are provided with an oil return pipe (20); an integrated cooler (21) is provided on the oil return pipe (20); a pipeline on the integrated cooler (21) is connected to an oil return filter (22); and the oil return filter (22) is connected to a pipeline of the hydraulic oil tank (1).
6. The drilling rig hydraulic station assembly according to claim 4, characterized in that: A sixth overflow valve (36) is installed between the third electromagnetic reversing valve (15) and the loosely clamped oil cylinder (18), a seventh overflow valve (37) is installed between the second electromagnetic reversing valve (14) and the clamping oil cylinder (17), the sixth overflow valve (36) and the seventh overflow valve (37) are connected to the oil return pipe (20) through pipelines, the second oil suction pipe (6) is fixedly connected to a fourth electromagnetic reversing valve (33) and a fifth overflow valve (34), and the fifth overflow valve (34) is connected to the oil return pipe (20) through a pipeline.
7. The drilling rig hydraulic station assembly according to claim 2, characterized in that: An air filter (101) is installed at the oil inlet end of the hydraulic oil tank (1), an oil drain ball valve (102) is installed at the oil outlet end of the hydraulic oil tank (1), a hydraulic gauge (103) is installed on the outer wall of the hydraulic oil tank (1), a liquid level relay (104) is fixedly installed inside the hydraulic oil tank (1), a temperature controller (105) is fixedly installed inside the hydraulic oil tank (1), and oil suction filters (35) are installed at the oil inlet ends of the first oil suction pipe (5) and the second oil suction pipe (6).
8. The drilling rig hydraulic station assembly according to claim 4, characterized in that: A cover plate (19) is installed between the second oil outlet pipe (8) and the oil return pipe (20).