Hydraulic station of drilling machine towing device

Abstract

The utility model discloses a drilling machine towing device hydraulic station which comprises a base assembly, a hydraulic oil tank assembly, a diesel engine power assembly and a multi-way reversing valve assembly, the base assembly is located at the lowermost end of equipment, other assemblies are directly or indirectly fixed to the base assembly, and the hydraulic oil tank assembly is used for storing oil, balancing the pressure of a hydraulic system and the like. The diesel engine power assembly is used for providing power for the whole hydraulic system, and the multi-way reversing valve assembly is used for controlling an execution element to work. Waste hydraulic oil during operation, repair and maintenance enters the oil collecting tank, pollution to the environment is reduced, the device is more environment-friendly, overflow valves and the like are all integrated in the multi-way reversing valve, the structure is simple, the device is convenient to use, the multi-way reversing valve reduces energy consumption and heat generation, higher economic benefits are achieved, and the device is worthy of popularization and application. The engine is adopted for power of the equipment, dependence on electric energy is avoided, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling rig technology, specifically a hydraulic station for a drilling rig trailer device. Background Technology

[0002] With the development of petroleum development technology, people have increasingly higher requirements for the functionality and operational efficiency of oil drilling rigs. In order to improve the working efficiency of drilling rigs and control the development costs of oil and gas resources, in addition to improving drilling rig performance and enhancing its intelligence level, rapid relocation and deployment are also important factors affecting drilling operation efficiency and are one of the important contents of drilling rig research.

[0003] The towing device for a drilling rig mainly includes a trailer chassis, drilling platform, derrick, top drive unit, hydraulic system, power system, electrical control system, and wellhead tools. These components together form a towing structure, making the drilling rig easier and faster to move. The hydraulic system of the towing device is a crucial part, controlling various movements of the towing device during rapid relocation and ensuring smooth and safe operation.

[0004] The hydraulic station of the existing drilling rig trailer is complicated to install and inconvenient to hoist and move. There is an urgent need for a hydraulic station for the drilling rig trailer that is easy to install, hoist, and move. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic station for a drilling rig towing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hydraulic station for a drilling rig trailer includes a base assembly, a hydraulic oil tank assembly, a diesel engine power assembly, and a multi-way directional valve assembly. The base assembly is located at the bottom of the equipment, and the other assemblies are directly or indirectly fixed to the base assembly. The hydraulic oil tank assembly is used to store oil and balance the pressure of the hydraulic system. The diesel engine power assembly is used to provide power to the entire hydraulic system, and the multi-way directional valve assembly is used to control the operation of the actuators.

[0008] As a further embodiment of this utility model: the base assembly mainly includes a base, an oil collection tank and lifting lugs. The base is the foundation of the base assembly. A hydraulic oil tank assembly is provided at one end of the base, and an oil collection tank is provided at the other end. The diesel engine power assembly is fixed in the oil collection tank. A lifting lug is provided at each of the four corners of the base.

[0009] As a further embodiment of this utility model: the hydraulic oil tank assembly mainly includes a hydraulic oil tank, a level and temperature gauge, a return oil filter, a check valve, a throttle valve, a right cleaning port, a left cleaning port, a hook, an air filter, a shockproof pressure gauge, a suction filter, and a drain ball valve. The hydraulic oil tank is the mounting carrier of the hydraulic oil tank assembly, and all other components are mounted on the hydraulic oil tank. A level and temperature gauge is installed on the upper part of the front panel of the hydraulic oil tank, and the return oil filter is located in one corner of the top panel of the hydraulic oil tank. A check valve and a throttle valve for adjusting direct oil return are installed at one end of the top plate of the oil tank. A right cleaning port is provided on the right side plate of the hydraulic oil tank, and a left cleaning port is provided on the left side plate of the hydraulic oil tank. Two hooks are provided at the upper part of the right side plate and the left side plate of the hydraulic oil tank. The air filter is located at the top of the hydraulic oil tank. The shockproof pressure gauge is located at the middle of the front end of the hydraulic oil tank. The suction filter is located at the lower part of the front side plate of the hydraulic oil tank. The drain ball valve is located at the lower part of the front side plate of the hydraulic oil tank.

[0010] As a further embodiment of this utility model: the diesel engine powertrain mainly includes a diesel engine, a water tank radiator, a diesel tank, a starting control box, a battery, rubber shock absorbers, a housing flange, a flywheel flange, a coupling, and a gear pump. The diesel engine serves as the mounting carrier for the diesel engine powertrain, and other components of the diesel engine powertrain are mounted around it. The water tank radiator is located at the front end of the diesel engine, and the diesel tank and battery are located on the left side of the diesel engine. Each of the four support legs of the diesel engine has a rubber shock absorber at its bottom. A housing flange is located on the rear housing of the diesel engine, and a flywheel flange is mounted on the rear flywheel of the diesel engine. A coupling is located in the middle of the flywheel flange, and the coupling connects to the gear pump drive shaft.

[0011] As a further embodiment of this utility model: the multi-way directional valve assembly mainly includes a connecting block, a pressure testing connector, a main relief valve, a first directional valve, a second directional valve, a third directional valve, a fourth directional valve, a fifth directional valve, a tail plate, operating rods for the first, second, third, fourth, and fifth directional valves, a first relief valve, and a second relief valve. The connecting block is located at the front of the multi-way directional valve assembly, and a pressure testing connector and a main relief valve are provided on the connecting block. The pressure connector is connected to the shockproof pressure gauge. The rear end of the connecting block is sequentially connected to the first reversing valve, the second reversing valve, the third reversing valve, the fourth reversing valve, the fifth reversing valve, and the tail plate. The first reversing valve, the second reversing valve, the third reversing valve, the fourth reversing valve, and the fifth reversing valve are respectively equipped with the first reversing valve operating rod, the second reversing valve operating rod, the third reversing valve operating rod, the fourth reversing valve operating rod, and the fifth reversing valve operating rod. The two ends of the fifth reversing valve are respectively equipped with the first relief valve and the second relief valve.

[0012] As a further improvement of this utility model: the pressure oil port of the gear pump is connected to the oil inlet of the connecting block, and the oil return port of the connecting block is connected to the oil return filter.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The waste hydraulic oil from the hydraulic station of the drilling rig towing device of this utility model during operation, maintenance and upkeep all enters the oil collection tank, reducing environmental pollution and making it more environmentally friendly;

[0015] 2. The hydraulic station of the drilling rig towing device of this utility model is entirely installed on the base assembly. The four corners of the base assembly are equipped with lifting lugs for easy hoisting. The installation is simple and the hoisting and transportation are convenient.

[0016] 3. The hydraulic station of the drilling rig towing device of this utility model integrates the overflow valve and other components into the multi-way directional valve, which has a simple structure, makes operation simpler, and is more convenient to use;

[0017] 4. In the hydraulic station of the drilling rig trailer of this utility model, when the multi-way directional valve is in the neutral position, the hydraulic oil is directly discharged and no pressure oil is formed, so the gear pump does not work. Pressure oil is formed only when the multi-way directional valve is working, and the gear pump does work, which reduces energy consumption and heat generation, resulting in higher economic efficiency.

[0018] 5. The flywheel flange and coupling connecting the engine and gear pump of the hydraulic station of the drilling rig trailer device of this utility model are made of nylon and carbon steel respectively. This new combination not only meets the strength requirements of transmission, but also reduces its own weight, resulting in higher economic benefits.

[0019] 6. The hydraulic station of the drilling rig towing device of this utility model is powered by an engine, which eliminates the reliance on electricity and makes it more widely applicable, especially suitable for harsher outdoor environments such as deserts and Gobi.

[0020] The hydraulic station of this drilling rig towing device is more environmentally friendly, has a simple structure, is easy to operate, convenient to use, easy to install, and is convenient to hoist and move. It has higher economic and practical performance and a wider range of applications. Attached Figure Description

[0021] Figure 1 Hydraulic standing body diagram of the drilling rig towing device of this utility model;

[0022] Figure 2 This is an overall three-dimensional drawing of the base of the hydraulic station of the drilling rig towing device of this utility model;

[0023] Figure 3 The hydraulic oil tank assembly of the hydraulic station of the drilling rig trailer device of this utility model is in three dimensions. Figure 1 ;

[0024] Figure 4 The hydraulic oil tank assembly of the hydraulic station of the drilling rig trailer device of this utility model is in three dimensions. Figure 2 ;

[0025] Figure 5 This is a three-dimensional view of the power system of the hydraulic station of the drilling rig towing device of this utility model;

[0026] Figure 6 This is a perspective view of the flange / coupling + gear pump of the hydraulic station of the drilling rig trailer device of this utility model.

[0027] Figure 7 The multi-way directional valve assembly of the hydraulic station of the drilling rig trailer device of this utility model is in three dimensions. Figure 1 ;

[0028] Figure 8 The multi-way directional valve assembly of the hydraulic station of the drilling rig trailer device of this utility model is in three dimensions. Figure 2 ;

[0029] In the diagram: 1-Base assembly, 2-Hydraulic oil tank assembly, 3-Diesel engine powertrain, 4-Multi-way directional valve assembly; 1.1-Base, 1.2-Oil collection trough, 1.3-Lifting lug, 2.1-Hydraulic oil tank, 2.2-Level and temperature gauge, 2.3-Return oil filter, 2.4-Check valve, 2.5-Throttle valve, 2.6-Right cleaning port, 2.7-Left cleaning port, 2.8-Hook, 2.9-Air filter, 2.10-Shockproof pressure gauge, 2.11-Suction filter, 2.12-Drain ball valve, 3.1-Diesel engine, 3.2-Radiator, 3.3-Diesel tank, 3.4-Starting control box, 3.5-Battery, 3.6-Rubber 3.7-Damping pad, 3.8-Cover flange, 3.9-Flywheel flange, 3.10-Gear pump, 4.1-Connecting block, 4.2-Pressure test connector, 4.3-Main relief valve, 4.4-First directional control valve, 4.5-Second directional control valve, 4.6-Third directional control valve, 4.7-Fourth directional control valve, 4.8-Fifth directional control valve, 4.9-Tail plate, 4.10-First directional control valve operating lever, 4.11-Second directional control valve operating lever, 4.12-Third directional control valve operating lever, 4.13-Fourth directional control valve operating lever, 4.14-Fifth directional control valve operating lever, 4.15-First relief valve, 4.16-Second relief valve. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Specifically, please refer to Figure 1-8 This utility model provides a technical solution: a hydraulic station for a drilling rig towing device, including a base assembly 1, a hydraulic oil tank assembly 2, a diesel engine power assembly 3, and a multi-way directional valve assembly 4.

[0032] Specifically, please refer to Figure 1 and Figure 2 The base assembly 1 is located at the lowest end of the hydraulic station equipment of the drilling rig towing device of this utility model. Other assemblies of the hydraulic station equipment of the drilling rig towing device of this utility model are directly or indirectly fixed to the base assembly 1. The base assembly 1 not only serves to place and fix other components of the hydraulic station equipment of the drilling rig towing device, but also facilitates the lifting of the equipment and collects waste liquid to prevent environmental pollution. The base assembly 1 mainly includes a base 1.1, an oil collection tank 1.2, and lifting lugs 1.3. The base 1.1 is the foundation of the base assembly 1. A hydraulic oil tank assembly 2 is provided at one end of the base 1.1, and an oil collection tank 1.2 is provided at the other end. The diesel engine power assembly 3 is fixed in the oil collection tank 1.2. The main function of the oil collection tank 1.2 is to collect and store leaked hydraulic oil to prevent hydraulic oil from dripping directly onto the ground and causing environmental pollution. A lifting lug 1.3 is provided at each of the four corners of the base 1.1 to facilitate the lifting of the equipment.

[0033] Specifically, please refer to Figure 1 , Figure 3 and Figure 4The hydraulic oil tank assembly 2 is fixed to one end of the base 1.1. The main functions of the hydraulic oil tank assembly 2 include storing hydraulic fluid, dissipating heat, separating air bubbles and impurities, providing an installation location, and balancing the hydraulic system pressure. The hydraulic oil tank assembly 2 mainly includes a hydraulic oil tank 2.1, a level and temperature gauge 2.2, a return oil filter 2.3, a check valve 2.4, a throttle valve 2.5, a right cleaning port 2.6, a left cleaning port 2.7, a hook 2.8, an air filter 2.9, a shockproof pressure gauge 2.10, a suction filter 2.11, and a drain ball valve 2.12. The hydraulic oil tank 2.1 is the mounting carrier of the hydraulic oil tank assembly 2, and all other components are mounted on the hydraulic oil tank 2.1. A level and temperature gauge 2.2 is installed on the upper part of the front panel of the hydraulic oil tank 2.1. The thermometer 2.2 is used to monitor the hydraulic oil level and temperature in the hydraulic oil tank 2.1. The return oil filter 2.3 is located in one corner of the top plate of the hydraulic oil tank 2.1. The return oil filter 2.3 is one of the most important filters for controlling the cleanliness of the system. Its function is to filter out contaminants generated or entering the hydraulic system before they return to the hydraulic oil tank 2.1. The return oil filter 2.3 is equipped with a flooding device for alarming filter element blockage. A check valve 2.4 and a throttle valve 2.5 for regulating direct oil return are installed at one end of the top plate of the hydraulic oil tank 2.1. The function of valve 2.4 is to prevent backflow of hydraulic oil from the direct return valve, ensuring that the hydraulic oil can only flow into the hydraulic oil tank 2.1. The function of valve 2.5 is to regulate the return speed of the hydraulic oil. The right side panel of the hydraulic oil tank 2.1 is provided with a right cleaning port 2.6, and the left side panel is provided with a left cleaning port 2.7. The function of the right cleaning port 2.6 and the left cleaning port 2.7 is to facilitate cleaning of the inner wall of the hydraulic oil tank 2.1. Two lifting devices are provided at the upper end of the right side panel and the left side panel of the hydraulic oil tank 2.1. Hook 2.8 facilitates the hoisting of the hydraulic oil tank assembly 2; the air filter 2.9 is located on the top of the hydraulic oil tank 2.1, and its function is to filter out dust and sand particles from the air, ensuring that sufficient clean air enters the hydraulic oil tank 2.1; the shockproof pressure gauge 2.10 is located in the middle of the front end of the hydraulic oil tank, and is used to display the system pressure of the hydraulic station of the drilling rig towing device; the suction filter 2.11 is located in the lower part of the front panel of the hydraulic oil tank 2.1, and its function is to protect the cleanliness of the hydraulic oil drawn by the oil pump and effectively control the contamination of the hydraulic system. The filter head of the suction filter 2.11 is exposed outside the oil tank and is equipped with a self-sealing valve, a bypass valve, and a filter element contamination and blockage indicator, so that the oil in the tank will not flow out when the filter element is replaced or cleaned; the drain ball valve 2.12 is located in the lower part of the front panel of the hydraulic oil tank, and its function is to release the hydraulic oil in the hydraulic oil tank 2.1 during maintenance and repair.

[0034] Specifically, please refer to Figure 1 , Figure 5 and Figure 6The diesel engine powertrain 3 is centrally located in the middle of the oil collection tank 1.1 in the base assembly 1. The function of the diesel engine powertrain 3 is to convert the heat energy released by fuel combustion into the pressure energy of the liquid, providing power to the entire hydraulic system. The diesel engine powertrain 3 mainly includes a diesel engine 3.1, a water tank radiator 3.2, a diesel tank 3.3, a starting control box 3.4, a battery 3.5, rubber shock absorbers 3.6, a cover flange 3.7, a flywheel flange 3.8, a coupling 3.9, and a gear pump 3.10. The gear pump 3.10 pumps hydraulic oil from the hydraulic oil tank assembly 2 through an oil suction filter 2.11. The diesel engine 3.1 serves as the mounting platform for the diesel engine powertrain 3, around which other components of the diesel engine powertrain 3 are installed. The function of the diesel engine 3.1 is to convert the heat energy released from diesel combustion into mechanical energy. A water tank radiator 3.2 is installed at the front end of the diesel engine 3.1, which provides sufficient coolant and cooling air for the large and small cooling cycles of the diesel engine 3.1. A diesel tank 3.3 and a battery 3.5 are located on the left side of the diesel engine 3.1. The diesel tank 3.3 provides fuel to the diesel engine 3.1, and the battery 3.5 provides power to the diesel engine 3.1 and the starter control box 3.4. Each of the four support legs of the diesel engine 3.1 has a rubber shock-absorbing pad 3.6 at its bottom. The main functions of the rubber shock-absorbing pad 3.6 include shock absorption, vibration isolation, and noise reduction. Noise reduction and buffering; a cover flange 3.7 is provided on the tail end cover of the diesel engine 3.1, whose main function is to prevent dust, moisture and other external substances from entering the machine; a flywheel flange 3.8 is installed on the flywheel at the tail end of the diesel engine 3.1, which rotates with the flywheel, and its main function is to protect the smooth operation and service life of the coupling 3.9; a coupling 3.9 is provided in the middle of the flywheel flange 3.8, which is connected to the drive shaft of the gear pump 3.10. Its main function is to transmit the torque of the diesel engine to the gear pump 3.10. The main function of the gear pump 3.10 is to convert mechanical energy into liquid pressure energy. The cover flange 3.7 and the flywheel flange 3.8 are made of nylon, while the coupling 3.9 is made of carbon steel. The new form of combining nylon and carbon steel has higher rigidity than that of both being carbon steel, which fully meets the strength requirements of the drive.

[0035] Specifically, please refer to Figure 1 , Figure 7 and Figure 8The multi-way directional valve assembly 4 is located on the hydraulic oil tank 2.1 and is the control mechanism of the hydraulic station of the drilling rig towing device. Its function is to control the work of the actuator and convert the hydraulic energy of the liquid into the mechanical energy of the machine. The multi-way directional valve assembly 4 mainly includes a connecting block 4.1, a pressure test connector 4.2, a main relief valve 4.3, a first directional valve 4.4, a second directional valve 4.5, a third directional valve 4.6, a fourth directional valve 4.7, a fifth directional valve 4.8, a tail plate 4.9, a first directional valve operating lever 4.10, a second directional valve operating lever 4.11, a third directional valve operating lever 4.12, a fourth directional valve operating lever 4.13, a fifth directional valve operating lever 4.14, a first relief valve 4.15, and a second relief valve 4.16. The pressure port of the gear pump 3.10 is directly connected to the oil inlet of the connecting block 4.1 to provide pressurized oil to the multi-way directional valve assembly 4. The return port of the connecting block 4.1 is connected to the return oil filter 2.3 to directly return oil to the hydraulic oil tank assembly 2. The connecting block 4.1 is located at the front of the multi-way directional valve assembly 4. Its main function is to connect and fix the various parts of the multi-way directional valve assembly 4, ensuring the normal operation of the hydraulic system. The connecting block 4.1 is equipped with a pressure test connector 4.2 and a main relief valve 4.3. The pressure test connector 4.2 is connected to a shockproof pressure gauge 2.10, displaying the system pressure of the drilling rig trailer hydraulic station. The main relief valve 4.3 is a safety valve group of the drilling rig trailer hydraulic station system. Its main function is to automatically open the relief channel when the system pressure exceeds the set value, allowing excess hydraulic oil to flow back to the oil tank to maintain stable system pressure. The rear end of the connecting block 4.1 is sequentially connected to the first directional valve 4.4, the second directional valve 4.5, the third directional valve 4.6, the fourth directional valve 4.7, the fifth directional valve 4.8, and the tailplate 4.9. Valve 4.6, the fourth directional valve 4.7, and the fifth directional valve 4.8 are respectively equipped with a first directional valve operating lever 4.10, a second directional valve operating lever 4.11, a third directional valve operating lever 4.12, a fourth directional valve operating lever 4.13, and a fifth directional valve operating lever 4.14. The main function of the first directional valve 4.4, the second directional valve 4.5, the third directional valve 4.6, the fourth directional valve 4.7, and the fifth directional valve 4.8 is to control the flow direction of the liquid in the hydraulic system, thereby realizing the communication, cut-off, and reversal of the hydraulic oil flow, as well as pressure unloading and sequential action control. The tail plate 4.9 is mainly used to adjust, cut off, or change the flow direction of the fluid and is an indispensable part of the fluid transmission and control process. The fifth directional valve 4.8 is equipped with a first relief valve 4.15 and a second relief valve 4.16 at both ends, the main function of which is to control the oil pressure at the inlet of the fifth directional valve 4.8.When the first reversing valve 4.4, the second reversing valve 4.5, the third reversing valve 4.6, the fourth reversing valve 4.7, and the fifth reversing valve 4.8 are in the neutral position, they are directly connected to the oil outlet and oil inlet of the connecting block 4.1, and the hydraulic oil overflows directly without forming pressurized oil. Only when any one of the five reversing valves is working, the hydraulic oil passage is disconnected from the working reversing valve, and the hydraulic oil overflows from the main relief valve 4.3 to form pressurized oil, which is then used to control the actuator of that reversing valve.

[0036] Operating Principle: Before starting, ensure the diesel fuel in the diesel tank 3.3, the oil dipstick in the diesel engine 3.1, and the coolant in the radiator 3.2 are normal. Use the key to turn on the power switch of the start control box 3.4. The battery 3.5 supplies power to the diesel engine 3.1 and the start control box 3.4. Press the start button on the start control box 3.4 and wait a few seconds; the diesel engine 3.1 will start automatically. Check the oil pressure and coolant temperature displayed on the start control box 3.4 to ensure they are within the normal range. First, run the diesel engine 3.1 at low speed to gradually increase its temperature. Once the temperature reaches the normal range, gradually increase the speed. The diesel engine 3.1 drives the gear pump 3.10 through the flywheel flange 3.8 and coupling 3.9 to pump hydraulic oil from the hydraulic oil tank assembly 2 and supply pressurized oil to the multi-way directional valve assembly 4. The hydraulic oil tank assembly 2 discharges oil through the suction filter 2.11 and draws in air through the air filter 2.9 to achieve pressure balance in the hydraulic oil tank 2.1. The actuators are controlled by the single-plate directional valve inside the multi-way directional valve assembly 4.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic station of a rig trailer unit, characterized in that, It includes base assembly (1), hydraulic oil tank assembly (2), diesel engine power assembly (3) and multi-way reversing valve assembly (4), the base assembly (1) is located at the lowermost end of the equipment, other assemblies are directly or indirectly fixed on the base assembly (1), the hydraulic oil tank assembly (2) is used for storing oil and balancing hydraulic system pressure, the diesel engine power assembly (3) is used for providing power for the whole hydraulic system, and the multi-way reversing valve assembly (4) is used for controlling the work of the executing element.

2. The hydraulic station of a drilling rig trailer device according to claim 1, characterized in that, The base assembly (1) mainly includes base (1.1), oil collecting groove (1.2) and lifting lug (1.3), the base (1.1) is the basis of the base assembly (1), one end of the base (1.1) is provided with the hydraulic oil tank assembly (2), the other end is provided with the oil collecting groove (1.2), and the diesel engine power assembly (3) is fixed in the oil collecting groove (1.2), and one lifting lug (1.3) is arranged at each corner of the base (1.1).

3. The hydraulic station of a drilling rig trailer device according to claim 2, characterized in that, The hydraulic oil tank assembly (2) mainly includes hydraulic oil tank (2.1), liquid level and temperature gauge (2.2), oil return filter (2.3), check valve (2.4), throttle valve (2.5), right cleaning port (2.6), left cleaning port (2.7), lifting hook (2.8), air filter (2.9), shockproof pressure gauge (2.10), oil suction filter (2.11) and oil drain ball valve (2.12), the hydraulic oil tank (2.1) is a containing carrier of the hydraulic oil tank assembly (2), and other elements are arranged on the hydraulic oil tank (2.1), the liquid level and temperature gauge (2.2) is arranged on the upper portion of the front tank plate of the hydraulic oil tank (2.1), the oil return filter (2.3) is arranged at a corner of the top plate of the hydraulic oil tank (2.1), the check valve (2.4) and the throttle valve (2.5) are arranged at one end of the top plate of the hydraulic oil tank (2.1), the right cleaning port (2.6) is arranged on the right side tank plate of the hydraulic oil tank (2.1), the left cleaning port (2.7) is arranged on the left side tank plate of the hydraulic oil tank (2.1), two lifting hooks (2.8) are arranged on the upper end of the right side tank plate and the left side tank plate of the hydraulic oil tank (2.1), the air filter (2.9) is arranged on the top of the hydraulic oil tank (2.1), the shockproof pressure gauge (2.10) is arranged at the middle portion of the front end of the hydraulic oil tank, the oil suction filter (2.11) is arranged on the lower portion of the front side tank plate of the hydraulic oil tank (2.1), and the oil drain ball valve (2.12) is arranged on the lower portion of the front side tank plate of the hydraulic oil tank.

4. The hydraulic station of a drilling rig trailer device according to claim 3, characterized in that, The diesel engine power assembly (3) mainly includes a diesel engine (3.1), a water tank radiator (3.2), a diesel tank (3.3), a starting control box (3.4), a storage battery (3.5), a rubber shock pad (3.6), a cover flange (3.7), a flywheel flange (3.8), a shaft coupling (3.9) and a gear pump (3.10), the diesel engine (3.1) is a bearing of the diesel engine power assembly (3), and other components of the diesel engine power assembly (3) are mounted around the diesel engine (3.1), the water tank radiator (3.2) is arranged at the front end of the diesel engine (3.1), the diesel tank (3.3) and the storage battery (3.5) are arranged at the left side of the diesel engine (3.1), one rubber shock pad (3.6) is arranged at the bottom of each supporting leg of the diesel engine (3.1), the cover flange (3.7) is arranged on the cover at the tail end of the diesel engine (3.1), the flywheel flange (3.8) is mounted on the flywheel at the tail end of the diesel engine (3.1), the shaft coupling (3.9) is arranged in the middle of the flywheel flange (3.8), and the shaft coupling (3.9) is connected with the driving shaft of the gear pump (3.10).

5. The hydraulic unit of a drilling rig trailer according to claim 4, characterized in that, The multi-way reversing valve assembly (4) mainly includes a connecting block (4.1), a pressure measuring connector (4.2), a main overflow valve (4.3), a first piece of reversing valve (4.4), a second piece of reversing valve (4.5), a third piece of reversing valve (4.6), a fourth piece of reversing valve (4.7), a fifth piece of reversing valve (4.8), a tail plate (4.9), a first piece of reversing valve operating rod (4.10), a second piece of reversing valve operating rod (4.11), a third piece of reversing valve operating rod (4.12), a fourth piece of reversing valve operating rod (4.13), a fifth piece of reversing valve operating rod (4.14), a first overflow valve (4.15) and a second overflow valve (4.16), the connecting block (4.1) is located at the front of the multi-way reversing valve assembly (4), the connecting block (4.1) is provided with the pressure measuring connector (4.2) and the main overflow valve (4.3), the pressure measuring connector (4.2) is connected with the shockproof pressure gauge (2.10), the rear end of the connecting block (4.1) is sequentially connected with the first piece of reversing valve (4.4), the second piece of reversing valve (4.5), the third piece of reversing valve (4.6), the fourth piece of reversing valve (4.7), the fifth piece of reversing valve (4.8) and the tail plate (4.9), the first piece of reversing valve (4.4), the second piece of reversing valve (4.5), the third piece of reversing valve (4.6), the fourth piece of reversing valve (4.7) and the fifth piece of reversing valve (4.8) are respectively provided with the first piece of reversing valve operating rod (4.10), the second piece of reversing valve operating rod (4.11), the third piece of reversing valve operating rod (4.12), the fourth piece of reversing valve operating rod (4.13) and the fifth piece of reversing valve operating rod (4.14), and the two ends of the fifth piece of reversing valve (4.8) are respectively provided with the first overflow valve (4.15) and the second overflow valve (4.16).

6. A hydraulic unit for a mobile drilling rig according to claim 5, c h a r a c t e r i s e d in that The pressure oil port of the gear pump (3.10) is connected with the oil inlet port of the connecting block (4.1), and the oil return port of the connecting block (4.1) is connected with the oil return filter (2.3).

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