CN117002197A

CN117002197A - Waterlogging drainage vehicle

Info

Publication number: CN117002197A
Application number: CN202210613789.2A
Authority: CN
Inventors: 刘胜
Original assignee: Guangdong Shengkun Fire Equipment Co ltd
Current assignee: Guangdong Shengkun Fire Equipment Co ltd
Priority date: 2022-04-30
Filing date: 2022-05-31
Publication date: 2023-11-07
Also published as: CN218929303U; CN217553615U

Abstract

The utility model belongs to the technical field of fire-fighting water supply and drainage devices, in particular to a drainage vehicle, which comprises a casing, a plurality of wheels arranged on the casing, a drainage assembly arranged on the casing, and further comprises: the hydraulic pump is arranged in the shell and is connected with an engine for driving the hydraulic pump to work and an oil tank for providing hydraulic oil; the hydraulic valves are arranged in the shell and are connected with the hydraulic pump; wherein each hydraulic valve respectively controls the movement of the corresponding wheel. This patent is equipped with four hydraulic valves to four wheels altogether, every hydraulic valve drives respectively one the wheel, and four wheels of accessible control its control drainage car rotate forward simultaneously or backward to realize the forward or the backward of drainage car, perhaps through making two preceding wheel differential motions, make the drainage car rotate towards one of them direction, realize the turn of drainage car.

Description

Waterlogging drainage vehicle

Technical Field

The utility model belongs to the technical field of fire-fighting water supply and drainage devices, and particularly relates to a waterlogging drainage vehicle.

Background

The utility model 2019220179544 discloses an amphibious fire-fighting water supply and drainage robot which comprises a chassis part, a buoyancy tank, a drainage assembly, a power device and a traveling device.

The amphibious fire-fighting water supply and drainage robot has the following defects:

1. the drainage robot drives wheels on two sides of the vehicle through the transmission boxes on two sides of the drainage robot, and the whole driving structure is complex, so that the drainage robot is inconvenient to steer and run.

2. When the lower body of the drainage robot is positioned under water, the movement of the drainage robot is difficult to realize only by virtue of wheels.

3. The existing internal equipment of the drainage robot is unscientific, and the normal operation of a drainage assembly and a running gear is easily affected by heat generated by an engine.

Disclosure of Invention

The utility model aims to provide a waterlogging drainage vehicle.

The purpose of the utility model is realized in the following way:

the utility model provides a drainage car, includes casing, a plurality of wheels that set up on the casing and sets up the drainage subassembly on the casing, still includes:

the hydraulic pump is arranged in the shell and is connected with an engine for driving the hydraulic pump to work and an oil tank for providing hydraulic oil; and

a plurality of hydraulic valves disposed in the casing and connected to the hydraulic pump;

wherein each hydraulic valve respectively controls the movement of the corresponding wheel.

Further, the hydraulic valve is a hydraulic proportional valve; the hydraulic valve is connected with a controller, the controller provides different control signals for the hydraulic valve, and the hydraulic valve outputs different pressures or/and pressures in different directions according to the different control signals.

Further, a hydraulic motor is arranged in the wheel, the hydraulic motor is connected with the hydraulic valve, and the hydraulic valve drives the hydraulic motor to work so as to enable the wheel to rotate.

Further, a balance valve is arranged between the hydraulic motor and the hydraulic valve.

Further, the wheels are provided with four wheels which are respectively arranged at four corners of the casing.

Further, the upper end face of the shell is provided with a plurality of radiating holes, and an air cooling device opposite to the radiating holes is arranged in the shell; the air cooling device is connected in an oil return path of the hydraulic valve and is used for cooling the hydraulic oil after working.

Further, the drainage assembly comprises a left pump set and a right pump set which are respectively and independently arranged, and the left pump set and the right pump set are respectively arranged at two sides of the central position of the drainage vehicle; the left pump set and the right pump set are respectively controlled through a single hydraulic valve.

Further, an embedded groove is formed below the shell, and the drainage assembly is arranged in the embedded groove and is higher than the bottom end of the wheel.

Further, the front end and the rear end of the drainage assembly are respectively connected with a front bracket and a rear bracket, the front bracket is rotationally fixed on the shell, and a lifting cylinder is arranged between the rear bracket and the shell; the drain assembly is oscillated about the rotational connection point of the front bracket and the housing by moving the lift cylinder.

Further, the front support and the rear support comprise a left clamp part, a right clamp part and a connecting part, wherein the connecting part is connected between the two clamp parts, and the two clamp parts are respectively sleeved on the left pump group and the right pump group.

Further, an air suction cavity, an engine cavity and a hydraulic loop cavity are separated in the shell through a heat insulation plate; the engine is arranged in the engine cavity, an air inlet of the engine penetrates through the heat insulation plate to enter the air suction cavity, and the hydraulic pump penetrates through the heat insulation plate to be connected with the engine.

Further, the shell comprises a box body, an opening opposite to the air suction cavity, the engine cavity and the hydraulic circuit cavity is arranged on the upper end face of the box body, a flip is rotatably arranged on the opening, and a plurality of heat dissipation holes are formed in the flip;

when the flip cover is arranged on the box body, the upper end of the baffle plate abuts against the lower end face of the flip cover.

Further, a liquid level sensor and a drainage assembly are further arranged in the box body, the liquid level in the box body is detected through the liquid level sensor, and the drainage assembly is controlled to work for drainage after the liquid level exceeds a certain threshold value.

Further, the surface of the shell is also provided with a hydraulic connector, and the hydraulic connector is connected with a hydraulic valve in the shell.

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

this patent is equipped with four hydraulic valves to four wheels altogether, every hydraulic valve drives respectively one the wheel, and four wheels of accessible control its control drainage car rotate forward simultaneously or backward to realize the forward or the backward of drainage car, perhaps through making two preceding wheel differential motions, make the drainage car rotate towards one of them direction, realize the turn of drainage car. Besides the normal movement of the drainage vehicle, hydraulic pressure can be concentrated to drive one of the front wheels of the drainage vehicle to rotate, so that when the drainage vehicle falls into a pit and cannot move, enough power is provided for the drainage vehicle to enable the drainage vehicle to recover the movement capability.

The hydraulic valve drives the left pump set or the right pump set to work independently, and the independent work of the single pump body is used for assisting the wheels of the waterlogging drainage vehicle to run underwater, so that the waterlogging drainage vehicle is prevented from being paralyzed in water, and the waterlogging drainage operation is influenced.

This patent is through the inner chamber of casing is separated to the heat insulating board prevents the heat that the engine produced to outwards transmit, influences the normal work of hydraulic valve and oil tank in the hydraulic circuit chamber. It should be noted that the size of the connecting ports on the heat insulation boards is adapted to the size of the object correspondingly installed in the connecting ports, so as to ensure the separation effect of each heat insulation board.

Drawings

Fig. 1 is a schematic structural view of a drainage vehicle.

Fig. 2 is an open schematic of the drainage vehicle.

Fig. 3 is a top view of the drainage vehicle.

Figure 4 is a side cross-sectional view of the interior of the drainage truck.

Fig. 5 is a schematic structural view of the end cap.

Fig. 6 is a schematic structural view of a heat shield.

Fig. 7 is a schematic bottom view of the drainage vehicle.

Fig. 8 is a schematic view of a drain assembly.

Fig. 9 is a schematic diagram of the hydraulic oil passage.

Fig. 10 is a side cross-sectional view of a wheel.

The meaning indicated by the reference numerals in the figures:

1. a housing; 11. a heat radiation hole; 12. an embedded groove; 121. a first connecting rod; 122. a second connecting rod; 13. An air suction cavity; 14. an engine cavity; 15. a hydraulic circuit chamber; 16. a case; 161. an opening; 17. a flip cover; 171. a latch structure; 172. a protruding end; 173. a partition plate; 18. a hydraulic joint; 181. a supercharger; 19. A heat insulating plate; 191. a connection port; 192. an extension end;

2. a wheel; 21. a hydraulic motor;

3. a drainage assembly; 31. a left pump group; 32. a right pump group; 33. a front bracket; 331. a clip part; 332. a connection part; 34. a rear bracket; 35. a lifting cylinder; 36. a water inlet; 361. a filter screen; 37. a water outlet;

41. a hydraulic pump; 42. an engine; 421. a smoke exhaust pipe; 43. an oil tank; 44. a hydraulic valve; 441. a main valve; 45. a balancing valve; 46. an air cooling device; 47. and a fuel tank.

Detailed Description

The utility model is further described with reference to the following specific examples:

a drainage vehicle comprises a casing 1, a plurality of wheels 2 arranged on the casing 1 and a drainage assembly 3 arranged on the casing 1.

As shown in fig. 1 and 2, in this embodiment, the casing 1 includes a case 16 and a flip cover 17, an opening 161 is provided at an upper end of the case 16, one end of the flip cover 17 is rotatably connected to one side of the opening 161, so that the entire flip cover 17 covers the opening 161 to close the opening 161, and a latch structure 171 for locking the flip cover 17 is provided at another end of the flip cover 17. The case 16 is welded with all the plates, so that the case 16 is more firm and waterproof.

The casing 1 is provided with a hydraulic pump 41, an engine 42, an oil tank 43, and a hydraulic valve 44. As shown in fig. 2 and 3, a heat insulation plate 19 is disposed in the casing 1, and the inner cavity of the casing 1 is divided into an air suction cavity 13, an engine cavity 14 and a hydraulic circuit cavity 15 by the heat insulation plate 19. The heat insulating plate 19 includes a metal skeleton welded in the case 16 for supporting and a heat insulating material disposed on a surface of the metal skeleton, and the heat insulating material may be one or more of glass fiber, asbestos, rock wool, and silicate.

In this embodiment, two heat insulation boards 19 are provided, and the front and rear of the heat insulation boards divide the inner cavity of the casing 1 into three; as shown in fig. 3 and 4, the engine 42 is disposed in the engine chamber 14, a connection port 191 is provided on the heat insulation plate 19 between the engine chamber 14 and the hydraulic circuit chamber 15, the hydraulic pump 41 is disposed in the connection port 191, one end of the hydraulic pump 41 is disposed in the engine chamber 14 and connected with the engine 42, and the other end is disposed in the hydraulic circuit chamber 15; a connection port 191 is also arranged on the heat insulation plate 19 between the engine cavity 14 and the air suction cavity 13, and the connection port 191 is used for placing an air inlet pipeline of the engine 42; in fact, the suction cavity 13 is communicated with the outside, and when the air inlet pipeline of the engine 42 is positioned in the suction cavity 13, suction can be performed to ensure heat dissipation of the engine 42 during operation.

As shown in fig. 3, an oil tank 43 and a hydraulic valve 44 for storing hydraulic oil are disposed in the hydraulic circuit chamber 15, the hydraulic pump 41 is respectively connected with the hydraulic valve 44 and the oil tank 43, the hydraulic valve 44 respectively controls the wheels 2 to operate and the drainage assembly 3 to operate, the hydraulic pump 41 is used for sucking hydraulic oil, and the hydraulic valves 44 are used for distributing hydraulic oil to the hydraulic motors 21 in the wheels 2 and the motors of the drainage assembly 3 to realize the drainage of the waterlogging vehicle. A fuel tank 47 is further provided in the hydraulic circuit chamber 15, and the fuel tank 47 supplies fuel to the engine 42 through a plate path penetrating the heat insulating plate 19.

The purpose of the heat shield 19 is to: the engine 42 may generate a large amount of heat during operation, affecting the ambient temperature, and the operation of the hydraulic valve 44 may be affected by the ambient temperature. The heat insulation plate 19 separates the inner cavity of the casing 1 to prevent heat generated by the engine 42 from being transferred outwards, which affects the normal operation of the hydraulic valve 44 and the oil tank 43 in the hydraulic circuit cavity 15. It should be noted that the size of the connecting opening 191 on the heat insulation board 19 is adapted to the size of the object correspondingly installed in the connecting opening 191, so as to ensure the separation effect of each heat insulation board 19.

As shown in fig. 9 and 10, the hydraulic valve 44 is a hydraulic proportional valve, and the hydraulic valve 44 is connected with a controller, which provides different control signals for the hydraulic valve 44, and the hydraulic valve 44 outputs different pressures or/and pressures in different directions according to the different control signals. The hydraulic proportional valve is a novel hydraulic control device, and on a common pressure valve, a flow valve and a directional valve, an original control part is replaced by a proportional electromagnet, and the pressure, the flow or the direction of oil flow is continuously and proportionally controlled in a long distance according to an input electric signal; a reset spring is generally arranged in the proportional valve, the controller controls the electromagnet in the proportional valve to move, and when the controller is no longer controlled, the reset spring works and drives the electromagnet to reset. The controller is typically an integrated circuit arranged on a PCB board and is controlled by means of a number of buttons or remote controls laid on the housing 1.

As shown in fig. 1 and 9, the wheels 2 in the patent are provided with four, the four corners of the casing 1 are provided with mounting seats, and the four wheels 2 are mounted through the mounting seats; in some embodiments, the wheels 2 may be provided in three, which are provided on three corners of the casing; the present patent is provided with four hydraulic valves 44 for the wheels 2, and each hydraulic valve 44 controls movement of one of the wheels 2. As shown in fig. 9 and 10, the hydraulic motor 21 is installed in the wheel 2, the oil inlet end and the oil return end of the hydraulic motor 21 are connected with one of the electromagnetic valves, the hydraulic motor 21 can be moved forward or backward by controlling the direction of the hydraulic valve 44, and the hydraulic valve 44 can be controlled to output different pressures by providing different control signals, such as different current signals, for the hydraulic valve 44, so as to adjust the rotation speed of the wheel 2.

For the drainage vehicle, the four wheels 2 of the drainage vehicle can be controlled to rotate forwards or backwards simultaneously so as to realize the forward or backward movement of the drainage vehicle; or the two front wheels 2 are made to move in a differential mode, so that the waterlogging drainage vehicle rotates towards one direction, and the waterlogging drainage vehicle turns. Besides the normal movement of the drainage vehicle, hydraulic pressure can be concentrated to drive one of the front wheels 2 of the drainage vehicle to rotate, so that when the drainage vehicle falls into a pit and cannot move, enough power is provided for the drainage vehicle to enable the drainage vehicle to recover the movement capability. It should be noted that, in the conventional drainage vehicle, the gear assembly is driven to move by one hydraulic valve 44, and then the plurality of wheels 2 are driven to move simultaneously by the gear assembly, so that when only a single wheel 2 cannot be driven to move, and the plurality of wheels 2 are driven to move simultaneously, the hydraulic pressure distributed to each wheel 2 becomes smaller, so that the drainage vehicle may have insufficient power and stay in a pit.

In general, a balance valve 45 is also provided between the hydraulic motor 21 and the hydraulic valve 44, so that the wheel 2 can stably output by adjusting the relative balance of the pressures on both sides.

In addition, an air cooling device 46 is further arranged in the hydraulic circuit, as shown in fig. 2, the air cooling device 46 is fixed on one side close to an opening 161 of the case through a bracket arranged in the case, and a plurality of heat dissipation holes 11 are formed in an end cover above the opening 161; furthermore, the present patent also provides a total valve 441 at one side of the hydraulic valves 44, wherein the total valve 441 is used for distributing hydraulic oil to each hydraulic valve 44, i.e. supplying oil to the hydraulic valve 44 to be operated when the hydraulic valve 44 is operated. In summary, the hydraulic circuit in the drainage vehicle is: the oil tank 43 is connected to the hydraulic pump 41, and the hydraulic pump 41 supplies oil to the main valve 441, and the main valve 441 supplies oil to the hydraulic valve 44 to be operated, and when the hydraulic valve 44 is not operated, the hydraulic oil in the main valve 441 is fed into the air cooling device 46, and returns oil from the air cooling device 46 to the oil tank 43. The air cooling device 46 is a box 16, and a fan is arranged outside the box 16, and faces the heat dissipation opening and is used for cooling hydraulic oil passing through the air cooling device 46.

The drainage assembly 3 in this patent is disposed at the lower end of the casing 1, as shown in fig. 7, an embedded groove 12 recessed toward the inner side of the casing 1 is integrally formed in the middle of the lower end of the casing 1, and the drainage assembly 3 includes a left pump set 31 and a right pump set 32, and the left pump set 31 and the right pump set 32 are respectively mounted on two sides of the central position of the embedded groove 12. The top end of the embedded groove 12 is the bottom surface of the shell 1, the wheels 2 are arranged on two sides of the bottom surface of the shell 1, and the bottom surface of the shell 1 is supported by the wheels 2; when the left pump unit 31 and the right pump unit 32 are installed in the embedded groove 12, the drainage assembly 3 is higher than the bottom end of the wheel 2, so that the drainage assembly 3 is prevented from being too low to collide with the ground during transportation of the drainage vehicle.

The left pump set 31 and the right pump set 32 each comprise a cylindrical drainage pump, one end of the drainage pump is provided with a water inlet 36, the other end of the drainage pump is provided with a water outlet 37, the water inlet 36 is used for absorbing water, a filter screen 361 is fixed on the water inlet 36, impurities are filtered out through the filter screen 361 when the drainage assembly 3 absorbs water, and the impurities are prevented from entering the drainage assembly 3 to influence the normal operation of the drainage assembly 3. In some embodiments, the left pump stack 31 and the right pump stack 32 may include a plurality of drainage pumps, thereby increasing drainage efficiency.

In this patent, the left pump unit 31 and the right pump unit 32 are controlled by a single hydraulic valve 44. Referring to fig. 9, two hydraulic valves 44 are provided in the hydraulic circuit of this patent for the left pump group 31 and the right pump group 32, each hydraulic valve 44 being used to drive the left pump group 31 or the right pump group 32, respectively, to operate.

When the drainage vehicle is in operation, the lower body of the drainage vehicle is basically positioned below the horizontal plane, and the drainage assembly 3 is operated to absorb water from the water inlet 36 of the drainage pump and drain water from the water outlet 37 of the drainage pump. When flood disasters are serious, the lower half parts of the flood drainage vehicles are all positioned below the horizontal plane, so that the operation steering of the flood drainage vehicles is greatly limited. In the patent, the waterlogging drainage vehicle can drive the drainage assembly 3 to work while driving the wheels 2 to work, and the water absorption of the drainage assembly 3 is used for assisting the forward and backward movement of the vehicle; in addition, when the vehicle needs to turn, the left pump set 31 or the right pump set 32 can be driven by the electromagnetic valve to work so as to assist the waterlogging vehicle to turn to one side, and the waterlogging vehicle can walk in water and turn.

Further, the front and rear ends of the drainage assembly 3 are respectively connected with a front bracket 33 and a rear bracket 34, and the front bracket 33 and the rear bracket 34 are used for connecting the left pump set 31 or the right pump set 32 back and forth; the front bracket 33 is rotatably fixed on the casing 1, and a lifting cylinder 35 is arranged between the rear bracket 34 and the casing 1. As shown in fig. 8, in this patent, the front bracket 33 and the rear bracket 34 each include a left and right clamping portion 331 and a connecting portion 332 between the two clamping portions 331, the clamping portions 331 and the connecting portion 332 are integrally formed, the clamping portions 331 are sleeved on the left pump set 31 or the right pump set 32 to achieve connection, and the connecting portion 332 is connected with the casing 1. The front bracket 33 is arranged at one side of the water discharge assembly 3, which is provided with a water outlet 37, two sides of the front bracket 33 are provided with rotating structures, and the rotating structures are connected with a first connecting rod 121 positioned at the bottom of the embedded groove 12; the rear bracket 34 is arranged on one side of the drain assembly 3 provided with the water inlet 36, and is fixed on the second connecting rod 122 at the bottom of the embedded groove 12 through the lifting cylinder 35. The lifting cylinder 35 is driven by a single hydraulic valve 44, when the lifting cylinder 35 works, the lifting cylinder 35 drives the rear bracket 34 to move, and the rear bracket 34 drives the left pump group 31 and the right pump group 32 to rotate around the front bracket 33, so that the water inlet 36 descends, and the water inlet 36 is submerged below the water level for water absorption when water logging is drained.

To sum up, this patent is through the hydraulic valve 44 alone drive left pump package 31 or right pump package 32 work, through the independent work of single pump body to assist the wheel 2 of drainage car to move under water, prevent that the drainage car paralysis from influencing the drainage operation in water.

Further, the opening 161 of the case 16 is opposite to the suction chamber 13, the engine chamber 14 and the hydraulic circuit chamber 15, and the heat dissipation hole 11 is formed in the lid 17, and when the lid 17 is provided to cover the opening 161, heat dissipation is performed through the heat dissipation hole 11 in the lid 17. As shown in fig. 5, the flip cover 17 has an upward protruding end 172, the heat dissipation hole 11 is provided on the outer edge of the protruding end 172 and the top of the protruding end 172, and the smoke exhaust pipe 421 of the engine 42 is placed in the protruding end 172; in order to adapt to the protruding ends 172, the two heat insulation boards 19 are provided with extending ends 192 located in the protruding ends 172, and a partition 173 overlapping with the extending ends 192 is provided in the protruding ends 172, and the overlapping structure facilitates sealing of the heat insulation boards 19 to the inner cavity of the casing 1. At this time, the suction chamber 13 radiates heat through the radiation holes 11 located at the outer edge of the rear end of the protruding end 172, the engine chamber 14 radiates heat through the radiation holes 11 located at the middle and both sides of the protruding end 172, and the hydraulic circuit chamber 15 radiates heat through the radiation holes 11 located at the front end of the flip 17.

Further, a liquid level sensor and a drainage assembly are further arranged in the tank 16, the liquid level in the tank 16 is detected through the liquid level sensor, and the drainage assembly is controlled to work for drainage after the liquid level exceeds a certain threshold value. The level sensor is typically located at the bottom of the tank 16 and is configured to drive the drain assembly to drain excess liquid when the tank 16 is filled with water and a certain level is exceeded. The drainage vehicle can be a water pump positioned in the tank 16, and accumulated water is drained through the water pump.

Further, a liquid level sensor is also provided in the oil tank 43 and the fuel tank 47, and a temperature sensor is also provided in the oil tank 43 and the fuel tank 47, which is used for detecting the liquid level of the oil tank 43 and the fuel tank 47 in real time to react the quantity of fuel, or detecting the temperature of the oil tank 43 and the fuel tank 47 to react the running condition of the waterlogging vehicle, and alarming is performed when the temperature is too high or the fuel is called.

Further, the surface of the casing 1 is also provided with a hydraulic joint 18, and the hydraulic joint 18 is connected with a hydraulic valve 44 positioned in the casing 1; as shown in fig. 1 and 9, the hydraulic connector 18 is disposed at the front end of the casing 1, and the hydraulic connector 18 is internally connected with a booster 181, and is connected with a hydraulic valve 44 through the booster 181. In the hydraulic circuit of the drainage vehicle, a hydraulic valve 44 is specially provided as the hydraulic connector 18, and the hydraulic connector 18 is used for externally connecting hydraulic tools, such as a hydraulic wrench, a hydraulic impact drill and the like, so as to meet different use requirements in the drainage operation.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a drainage car, includes casing (1), a plurality of wheels (2) that set up on casing (1) and sets up drainage subassembly (3) on casing (1), its characterized in that still includes:

a hydraulic pump (41) provided in the housing (1), the hydraulic pump (41) being connected to an engine (42) that drives the hydraulic pump to operate and to a tank (43) for supplying hydraulic oil; and

a plurality of hydraulic valves (44) provided in the casing (1) and connected to the hydraulic pump (41);

wherein each hydraulic valve (44) controls movement of a corresponding wheel (2) respectively.

2. The drainage vehicle of claim 1, wherein: the hydraulic valve (44) is a hydraulic proportional valve; the hydraulic valve (44) is connected with a controller, the controller provides different control signals for the hydraulic valve (44), and the hydraulic valve (44) outputs different pressures or/and pressures in different directions according to the different control signals.

3. The drainage vehicle of claim 1, wherein: the wheel (2) is provided with a hydraulic motor (21), the hydraulic motor (21) is connected with the hydraulic valve (44), and the hydraulic valve (44) drives the hydraulic motor (21) to work so as to rotate the wheel (2).

4. The drainage vehicle of claim 1, wherein: a plurality of radiating holes (11) are formed in the upper end face of the shell (1), and an air cooling device (46) opposite to the radiating holes (11) is arranged in the shell (1); the air cooling device (46) is connected in an oil return path of the hydraulic valve (44) and is used for cooling the working hydraulic oil.

5. A drainage vehicle according to any of claims 1-4, wherein: the drainage assembly (3) comprises a left pump set (31) and a right pump set (32) which are respectively and independently arranged, and the left pump set (31) and the right pump set (32) are respectively arranged on two sides of the central position of the drainage vehicle; the left pump group (31) and the right pump group (32) are respectively controlled by a single hydraulic valve (44).

6. The drainage vehicle of claim 5, wherein: an embedded groove (12) is formed below the shell (1), and the drainage assembly (3) is arranged in the embedded groove (12) and is higher than the bottom end of the wheel (2).

7. The drainage vehicle of claim 5, wherein: the front end and the rear end of the drainage assembly (3) are respectively connected with a front support (33) and a rear support (34), the front support (33) is rotationally fixed on the shell (1), and a lifting cylinder (35) is arranged between the rear support (34) and the shell (1); the drain assembly (3) is swung around the rotational connection point of the front bracket (33) and the casing (1) by moving the lifting cylinder (35).

8. The drainage vehicle of claim 7, wherein: the front support (33) and the rear support (34) comprise a left clamp part (331) and a right clamp part (331) and a connecting part (332) connected between the two clamp parts (331), and the two clamp parts (331) are respectively sleeved on the left pump set (31) and the right pump set (32).

9. A drainage vehicle according to any of claims 1-4, characterized in that the casing (1) is divided by a heat insulating plate (19) into a suction chamber (13), an engine chamber (14) and a hydraulic circuit chamber (15); the engine (42) is arranged in the engine cavity (14), an air inlet of the engine (42) penetrates through the heat insulation plate (19) to enter the air suction cavity (13), and the hydraulic pump (41) penetrates through the heat insulation plate (19) to be connected with the engine (42).

10. The drainage vehicle of claim 9, wherein: the casing (1) comprises a casing body (16), an opening (161) opposite to the air suction cavity (13), the engine cavity (14) and the hydraulic circuit cavity (15) is formed in the upper end face of the casing body (16), a flip cover (17) is rotatably arranged on the opening (161), and a plurality of heat dissipation holes (11) are formed in the flip cover (17);

when the flip cover (17) is arranged on the box body (16), the upper end of the heat insulation plate (19) is abutted against the lower end face of the flip cover (17).