Vertical power take-off electric pump, pure electric chassis and vehicle

Abstract

The invention provides a vertical power take-off electric pump, a pure electric chassis and a vehicle, and relates to the technical field of electric pumps, the vertical power take-off electric pump comprises a motor pump assembly, an oil tank assembly and at least two support assemblies, the motor pump assembly is connected with the oil tank assembly, the oil tank assembly is located below the motor pump assembly, and the support assemblies are connected with the motor pump assembly; the at least two support assemblies are used for connecting the oil tank assembly and a vehicle. The motor pump assembly comprises a high-voltage motor and an oil pump, the oil pump is vertically arranged below the high-voltage motor and arranged in the oil tank, the oil pump is connected with a motor end cover at the bottom end of the high-voltage motor, and the high-voltage motor is connected with an oil tank shell flange in the oil tank assembly through the motor end cover. The gravity center of the power take-off electric pump can be lowered, the structure is compact, the integration degree is high, and maintenance is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of electric pumps, and in particular to a vertical power take-off electric pump, a pure electric chassis and a vehicle. Background Art

[0002] The power take-off electric pump is an integrated hydraulic power device, which is mainly used in electric vehicles, such as pure electric chassis of light trucks. It provides a stable hydraulic power source for the vehicle's upper equipment such as lifting platforms, hydraulic arms, etc. Its core function is to convert electrical energy into hydraulic energy and drive the load equipment to operate through high-pressure oil.

[0003] The high-voltage motor, oil pump and oil tank of the existing power take-off electric pump are installed separately. The oil pump is connected to the front end of the high-voltage motor, and the oil tank is installed on the top of the high-voltage motor. As a result, the center of gravity of the power take-off electric pump is too high, and the vehicle is prone to shaking during driving. In addition, the structure is loose, resulting in low integration of the power take-off electric pump and inconvenient maintenance. Summary of the invention

[0004] The present invention aims to solve at least one of the above problems.

[0005] In order to solve the above problems, the present invention provides a vertical power take-off electric pump, a pure electric chassis and a vehicle.

[0006] In a first aspect, the present invention provides a vertical power take-off electric pump, comprising a motor pump assembly, a fuel tank assembly and at least two bracket assemblies, wherein the motor pump assembly is connected to the fuel tank assembly, and the fuel tank assembly is located below the motor pump assembly, and at least two of the bracket assemblies are used to connect the fuel tank assembly to a vehicle; The motor pump assembly includes a high-voltage motor and an oil pump. The oil pump is vertically arranged below the high-voltage motor and placed inside the oil tank. The oil pump is connected to the motor end cover at the bottom end of the high-voltage motor, and the high-voltage motor is connected to the oil tank housing flange in the oil tank assembly through the motor end cover.

[0007] Optionally, the motor pump assembly also includes an oil suction pipe, an oil suction filter and an oil outlet pipe, one end of the oil suction pipe is connected to the oil inlet interface of the oil pump, and the other end is connected to the oil suction filter, one end of the oil outlet pipe is connected to the oil outlet interface of the oil pump, and the other end is connected to the motor end cover through a flange.

[0008] Optionally, the motor pump assembly further comprises a hydraulic hinge joint, and the connection between the oil suction pipe and the oil pump, and the connection between the oil outlet pipe and the oil pump are both provided with corresponding hydraulic hinge joints.

[0009] Optionally, the fuel tank assembly further includes at least two anti-surge partitions, and the at least two anti-surge partitions are spaced apart in the fuel tank, and the anti-surge partitions are provided with a plurality of oil-passing through holes.

[0010] Optionally, the fuel tank assembly further includes an air filter, an oil return filter, and a liquid level gauge provided on the fuel tank; The air filter is used to maintain the air pressure balance inside and outside the fuel tank and filter impurities in the air entering the fuel tank; The oil return filter is used to filter contaminants in the oil returning to the fuel tank; The liquid level gauge is used to monitor the liquid level height in the fuel tank.

[0011] Optionally, the bracket assembly includes an L-shaped bracket beam and a cushion block. The horizontal beam of the L-shaped bracket beam is connected to the bottom end of the fuel tank housing, and the vertical beam of the L-shaped bracket beam is used to connect to the vehicle through the cushion block.

[0012] Optionally, the horizontal beam is provided with a plurality of fuel tank lateral limiting holes, a plurality of strap fixing holes, and fuel tank straps corresponding to the strap fixing holes. The bottom end of the fuel tank housing is provided with fixing holes corresponding to the fuel tank lateral limiting holes. The horizontal beam is bolted to the bottom end of the fuel tank housing through the fuel tank lateral limiting holes and the fixing holes. The plurality of strap fixing holes are symmetrically arranged at both ends in the length direction of the horizontal beam. One end of the fuel tank strap is connected to the strap fixing hole located at one end of the horizontal beam, and the other end of the fuel tank strap bypasses the outer surface of the fuel tank housing and is connected to the strap fixing hole located at the other end of the horizontal beam.

[0013] Optionally, at least one lifting ring is provided on the motor end cover.

[0014] In a second aspect, the present invention provides an electric chassis including the vertical power take-off electric pump as described in the first aspect.

[0015] In a third aspect, the present invention provides a vehicle including the vertical power take-off electric pump as described in the first aspect, or including the electric chassis as described in the second aspect.

[0016] The beneficial effects of the vertical power take-off electric pump of the present invention are: By vertically arranging the oil pump of the motor pump assembly below the high-voltage motor and integrating it with the interior of the fuel tank of the fuel tank assembly to form a vertical stacked structure, the lateral occupied space can be significantly reduced, which is suitable for the narrow installation environment of the vehicle chassis, improving the rationality and integration of the overall layout. At the same time, the center of gravity of the vertical power take-off electric pump can be reduced, enhancing the anti-overturning ability during vehicle driving. In addition, by placing the oil pump inside the fuel tank, the oil flow path can be shortened, the external leakage points can be reduced, and the oil suction resistance can be lowered, improving the efficiency of the hydraulic system. Furthermore, by flange-connecting the motor end cover of the motor pump assembly to the fuel tank shell of the fuel tank assembly, only the flange bolts need to be loosened for the whole unit to be removed during disassembly, facilitating the quick replacement of components or the maintenance of the oil circuit, and greatly reducing the maintenance difficulty and cost. By connecting the fuel tank assembly to the vehicle frame through at least two support assemblies, the structural shaking during vehicle bumping or sudden stop can be effectively suppressed, reducing the risk of oil surge. Description of the Drawings

[0017] Figure 1 Figure 1 is one of the structural schematic diagrams of the vertical power take-off electric pump provided by the embodiment of the present invention; Figure 2 Figure 2 is another structural schematic diagram of the vertical power take-off electric pump provided by the embodiment of the present invention; Figure 3 Figure 3 is one of the structural schematic diagrams of the motor pump assembly provided by the embodiment of the present invention; Figure 4 Figure 4 is another structural schematic diagram of the motor pump assembly provided by the embodiment of the present invention; Figure 5 Figure 5 is one of the structural schematic diagrams of the fuel tank assembly provided by the embodiment of the present invention; Figure 6 Figure 6 is another structural schematic diagram of the fuel tank assembly provided by the embodiment of the present invention; Figure 7 Figure 7 is the structural schematic diagram of the anti-surge partition provided by the embodiment of the present invention; Figure 8 Figure 8 is the structural schematic diagram of the L-shaped support beam provided by the embodiment of the present invention.

[0018] Description of the Reference Numerals: 1. Motor pump assembly; 11. High-voltage motor; 12. Oil pump; 13. Motor end cover; 14. Suction pipe; 15. Suction filter element; 16. Discharge pipe; 17. Hydraulic hinge joint; 18. Lifting ring; 2. Fuel tank assembly; 21. Fuel tank; 22. Anti-surge partition; 23. Oil passage through hole; 24. Air filter; 25. Return oil filter; 26. Liquid level gauge; 3. Support assembly; 31. L-shaped support beam; 311. Horizontal beam; 312. Vertical beam; 32. Pad; 33. Fuel tank lateral limit hole; 34. Tie-down fixing hole; 35. Fuel tank tie-down. Detailed Embodiments

[0019] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0020] As used herein, the term "comprising" and its variations are open-ended, i.e., "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules, or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules, or units.

[0021] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly specified in the context, it should be understood as "one or more".

[0022] In view of the problems existing in the above related technologies, this embodiment provides a vertical power take-off electric pump, a pure electric chassis, and a vehicle.

[0023] As Figures 1 to 5 shown, a vertical power take-off electric pump provided by an embodiment of the present invention includes a motor pump assembly 1, a fuel tank assembly 2, and at least two bracket assemblies 3. The motor pump assembly 1 is connected to the fuel tank assembly 2, and the fuel tank assembly 2 is located below the motor pump assembly 1. At least two of the bracket assemblies 3 are used to connect the fuel tank assembly 2 to the vehicle; The motor pump assembly 1 includes a high-voltage motor 11 and an oil pump 12. The oil pump 12 is vertically disposed below the high-voltage motor 11 and placed inside the fuel tank 21. The oil pump 12 is connected to the motor end cover 13 at the bottom end of the high-voltage motor 11, and the high-voltage motor 11 is flange-connected to the outer shell of the fuel tank 21 in the fuel tank assembly 2 through the motor end cover 13.

[0024] Specifically, the vertical power take-off electric pump includes a motor pump assembly 1, a fuel tank assembly 2, and at least two support assemblies 3. The motor pump assembly 1 and the fuel tank assembly 2 are provided with corresponding flange interfaces so that the motor pump assembly 1 and the fuel tank assembly 2 are flange-connected. The fuel tank assembly 2 is located below the motor pump assembly 1 to form a vertical stacked structure. At least two support assemblies 3 are arranged at the bottom end or side end of the fuel tank assembly 2 for connecting the fuel tank assembly 2 to the vehicle to fix the motor pump assembly 1 and the fuel tank assembly 2 on the vehicle. The motor pump assembly 1 includes a high-pressure motor 11 and an oil pump 12. The oil pump 12 is vertically arranged below the high-pressure motor 11 and placed inside the fuel tank 21. The oil pump 12 is connected to the motor end cover 13 at the bottom end of the high-pressure motor 11, and the high-pressure motor 11 is flange-connected to the outer shell of the fuel tank 21 in the fuel tank assembly 2 through the motor end cover 13 so that the oil pump 12 is placed inside the fuel tank 21. There is also an oil circuit between the high-pressure motor 11 and the oil pump 12. In actual operation, the high-pressure motor 11 operates under rated conditions, converts electrical energy into mechanical kinetic energy to drive the oil pump 12 to rotate. The oil pump 12 operates to form a negative pressure, sucks the oil in the fuel tank 21 into the oil pump 12, and converts it into pressure output, which is transported to the hydraulic load equipment through a hydraulic pipeline to provide power for it.

[0025] In this embodiment, by vertically arranging the oil pump 12 of the motor pump assembly 1 below the high-pressure motor 11 and integrating it with the inside of the fuel tank 21 of the fuel tank assembly 2 to form a vertical stacked structure, the lateral occupied space can be significantly reduced, which is suitable for the installation environment with a narrow vehicle chassis, improves the rationality and integration degree of the overall layout. At the same time, the center of gravity of the vertical power take-off electric pump can be reduced, enhancing the anti-overturning ability during vehicle driving. In addition, by placing the oil pump 12 inside the fuel tank 21, the oil flow path can be shortened, the external leakage points can be reduced, the oil suction resistance can be lowered, and the efficiency of the hydraulic system can be improved. Furthermore, through the flange connection between the motor end cover 13 of the motor pump assembly 1 and the outer shell of the fuel tank 21 of the fuel tank assembly 2, when disassembling, only the flange bolts need to be loosened to remove the whole unit, which is convenient for quickly replacing components or overhauling the oil circuit, greatly reducing the maintenance difficulty and cost. By connecting the fuel tank assembly 2 to the vehicle frame through at least two support assemblies 3, the structural shaking during vehicle bumping or sudden stop can be effectively suppressed, reducing the risk of oil surging.

[0026] Optionally, as Figure 3 and Figure 4 shown, the motor pump assembly 1 further includes a suction pipe 14, a suction filter element 15, and a discharge pipe 16. One end of the suction pipe 14 is connected to the oil inlet interface of the oil pump 12, and the other end is connected to the suction filter element 15. One end of the discharge pipe 16 is connected to the oil outlet interface of the oil pump 12, and the other end is flange-connected to the motor end cover (13).

[0027] Specifically, the motor pump assembly 1 further includes an oil suction pipe 14, an oil suction filter element 15, and an oil discharge pipe 16. The oil suction pipe 14 and the oil discharge pipe 16 are rigid seamless steel pipes. One end of the oil suction pipe 14 is connected to the oil inlet interface of the oil pump 12, and the other end is threadedly connected to the oil suction filter element 15. One end of the oil discharge pipe 16 is connected to the oil outlet interface of the oil pump 12, and the other end is flange-connected to the motor end cover (13).

[0028] The oil in the fuel tank 21 is successively sucked into the oil pump 12 through the oil suction filter element 15 and the oil suction pipe 14, and is output to the hydraulic load device through the oil discharge pipe 16 to provide power for it. The output end of the oil discharge pipe 16 is fixed to the motor end cover 13 by a flange, which is convenient for connecting with the liquid inlet pipeline of the hydraulic load.

[0029] Optionally, as Figure 3 and Figure 4 shown, the motor pump assembly 1 further includes a hydraulic hinge joint 17. Corresponding hydraulic hinge joints 17 are provided at the connection between the oil suction pipe 14 and the oil pump 12, and at the connection between the oil discharge pipe 16 and the oil pump 12.

[0030] Specifically, the motor pump assembly 1 further includes a hydraulic hinge joint 17. Corresponding hydraulic hinge joints 17 are provided at the connection between the oil suction pipe 14 and the oil pump 12, and at the connection between the oil discharge pipe 16 and the oil pump 12. The hydraulic hinge joint 17 allows the pipeline to deflect at a certain angle during installation or operation, adapts to the relative displacement caused by vehicle bumps, chassis deformation or assembly errors, avoids stress concentration caused by rigid connection. When the vehicle is driving, the hydraulic hinge joint can absorb vibration and shock, reduce fatigue damage of the pipeline and its interface, and extend the service life. The hydraulic hinge joint 17 supports quick connection and separation of the pipeline without special tools, simplifies maintenance operations such as filter element replacement and oil pump maintenance. It is compatible with rigid seamless steel pipes or hoses of different pipe diameters, improving compatibility.

[0031] Optionally, as Figures 5 to 7 shown, the fuel tank assembly 2 further includes at least two anti-surge partitions 22. At least two anti-surge partitions 22 are arranged at intervals in the fuel tank 21, and the anti-surge partitions 22 are provided with a plurality of oil passing through holes 23.

[0032] Specifically, the fuel tank assembly 2 further includes at least two anti-surge partitions 22. At least two anti-surge partitions 22 are arranged at intervals in the fuel tank 21, which can gradually weaken the energy transfer of oil fluid fluctuations and form a "damping" effect. The anti-surge partitions 22 are provided with a plurality of oil passing through holes 23, which can retain the fluidity of the oil, prevent the oil pump from sucking air, and disperse the kinetic energy of the oil fluid through the pores to allow the oil to flow slowly but hinder its rapid sloshing.

[0033] Optionally, as Figure 5As shown, the fuel tank assembly 2 further includes an air filter 24, an oil return filter 25, and a liquid level gauge 26 provided on the fuel tank 21; The air filter 24 is used to maintain the air pressure balance inside and outside the fuel tank 21 and filter impurities in the air entering the fuel tank 21; The oil return filter 25 is used to filter contaminants in the oil returning to the fuel tank 21; The liquid level gauge 26 is used to monitor the liquid level height in the fuel tank 21.

[0034] Specifically, the fuel tank 21 is provided with flange structures corresponding to the air filter 24, the oil return filter 25, and the liquid level gauge 26, so that the air filter 24, the oil return filter 25, and the liquid level gauge 26 are flange-connected to the fuel tank 21. The air filter 24 is located at the top of the fuel tank and communicates with the outside world to ensure that the fuel tank 21 can breathe freely when the oil is consumed or the temperature changes, so as to achieve the air pressure balance inside and outside the fuel tank. Based on the physical interception and adsorption mechanism, it filters the impurities in the air through the filter element to ensure that the air entering the fuel tank 21 is clean. At the same time, it also serves as the fuel filler neck. When refueling, the filter screen can filter the impurities in the oil, and the impurities can be cleaned by removing the filter screen. The oil return filter 25 is installed on the oil return pipeline of the oil pump 12 to filter the contaminants in the oil returning to the fuel tank 21. The liquid level gauge 26 is installed on the side wall or the top of the fuel tank 21 for easy observation by the driver or maintenance personnel to monitor the liquid level height in the fuel tank 21.

[0035] Exemplarily, during actual operation, the high-voltage motor 11 operates under the rated working condition, converts electrical energy into mechanical kinetic energy to drive the oil pump 12 to rotate. The oil pump 12 operates to form a negative pressure, filters the impurities in the oil through the oil suction filter element 15 installed at the oil inlet interface, sucks the oil into the oil pump 12, and then discharges it through the oil outlet interface, converts it into pressure output, and transports it to the hydraulic load equipment through the hydraulic pipeline to provide power for it. After the oil enters the oil return filter 25 from the system oil return pipeline, through the pores or filter material layers inside the filter element of the oil return filter 25, such as glass fiber, metal mesh, paper, etc., solid particles, such as metal chips and rubber debris, and impurities are intercepted on the surface or inside of the filter element of the oil return filter 25. The cleaned oil returns to the fuel tank 21 through the outlet of the oil return filter 25 to complete the cycle.

[0036] Optionally, as Figure 8 shown, the bracket assembly 3 includes an L-shaped bracket beam 31 and a cushion block 32. The horizontal beam 311 of the L-shaped bracket beam 31 is connected to the bottom end of the outer shell of the fuel tank 21, and the vertical beam 312 of the L-shaped bracket beam 31 is used to connect to the vehicle through the cushion block 32.

[0037] Specifically, the bracket assembly 3 includes an L-shaped bracket beam 31 and a cushion block 32. The horizontal beam 311 of the L-shaped bracket beam 31 is connected to the bottom end of the outer shell of the fuel tank 21, and the vertical beam 312 of the L-shaped bracket beam 31 is used to be connected to the vehicle through the cushion block 32, and the horizontal beam 311 and the connection form an approximate "L" shape.

[0038] Optionally, as Figure 2 and Figure 8 shown, the horizontal beam 311 is provided with a plurality of fuel tank lateral limiting holes 33, a plurality of strap fixing holes 34, and fuel tank straps 35 corresponding to the strap fixing holes 34. The bottom end of the outer shell of the fuel tank 21 is provided with fixing holes corresponding to the fuel tank lateral limiting holes 33. The horizontal beam 311 is bolted to the bottom end of the outer shell of the fuel tank 21 through the fuel tank lateral limiting holes 33 and the fixing holes. The plurality of strap fixing holes 34 are symmetrically arranged at both ends in the length direction of the horizontal beam 311. One end of the fuel tank strap 35 is connected to the strap fixing hole 34 located at one end of the horizontal beam 311, and the other end of the fuel tank strap 35 bypasses the outer surface of the fuel tank 21 and is connected to the strap fixing hole 34 located at the other end of the horizontal beam 311.

[0039] Specifically, the horizontal beam 311 is provided with a plurality of fuel tank lateral limiting holes 33, a plurality of strap fixing holes 34, and fuel tank straps 35 corresponding to the strap fixing holes 34. The bottom end of the outer shell of the fuel tank 21 is provided with fixing holes corresponding to the fuel tank lateral limiting holes 33. The horizontal beam 311 is bolted to the bottom end of the outer shell of the fuel tank 21 through the fuel tank lateral limiting holes 33 and the fixing holes. The plurality of strap fixing holes 34 are symmetrically arranged at both ends in the length direction of the horizontal beam 311. One end of the fuel tank strap 35 is connected to the strap fixing hole 34 located at one end of the horizontal beam 311, and the other end of the fuel tank strap 35 bypasses the outer surface of the fuel tank 21 and is connected to the strap fixing hole 34 located at the other end of the horizontal beam 311. The fuel tank strap 35 is a steel strip with a rubber sleeve outside, and both ends of the fuel tank strap 35 are provided with screws. The strap fixing holes 34 at both ends of the horizontal beam 311 are provided with a plurality of nuts corresponding to the screws. The fuel tank strap 35 is threadedly connected to the strap fixing holes 34 at both ends of the horizontal beam 311 through the screws and the nuts to achieve double-nut or multi-nut connection.

[0040] Optionally, as Figure 3 and Figure 4 shown, at least one lifting ring 18 is provided on the motor end cover 13.

[0041] Specifically, at least one lifting ring 18 is provided on the motor end cover 13. Before installation or after removing the installation bolts of the flange, the motor pump assembly 1 can be taken out and put in through the lifting ring 18, so as to facilitate installation and maintenance.

[0042] An all-electric chassis provided by an embodiment of the present invention includes the vertical power take-off electric pump as described above.

[0043] A vehicle provided by an embodiment of the present invention includes the vertical power take-off electric pump as described above, or includes the all-electric chassis as described above.

[0044] The beneficial effects of the all-electric chassis and the vehicle of this embodiment compared with the prior art are the same as those of the vertical power take-off electric pump described above, and will not be elaborated here.

[0045] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A vertical power take-off electric pump, characterized in that It includes a motor pump assembly (1), a fuel tank assembly (2), and at least two bracket assemblies (3). The motor pump assembly (1) is connected to the fuel tank assembly (2), and the fuel tank assembly (2) is located below the motor pump assembly (1). At least two of the bracket assemblies (3) are used to connect the fuel tank assembly (2) to the vehicle; The motor pump assembly (1) includes a high-pressure motor (11) and an oil pump (12). The oil pump (12) is vertically arranged below the high-pressure motor (11) and placed inside the fuel tank 21. The oil pump 12 is connected to the motor end cover (13) at the bottom end of the high-pressure motor (11), and the high-pressure motor (11) is flange-connected to the outer shell of the fuel tank (21) in the fuel tank assembly (2) through the motor end cover (13).

2. The vertical power take-off electric pump according to claim 1, characterized in that The motor pump assembly (1) further includes an oil suction pipe (14), an oil suction filter element (15), and an oil outlet pipe (16). One end of the oil suction pipe (14) is connected to the oil inlet interface of the oil pump (12), and the other end is connected to the oil suction filter element (15). One end of the oil outlet pipe (16) is connected to the oil outlet interface of the oil pump (12), and the other end is flange-connected to the motor end cover (13).

3. The vertical power take-off electric pump according to claim 2, characterized in that, The motor pump assembly (1) further includes a hydraulic hinge joint (17). Corresponding hydraulic hinge joints (17) are provided at the connection between the oil suction pipe (14) and the oil pump (12), and at the connection between the oil outlet pipe (16) and the oil pump (12).

4. The vertical power take-off electric pump according to claim 1, characterized in that, The fuel tank assembly (2) further includes at least two anti-surge partitions (22). At least two of the anti-surge partitions (22) are arranged at intervals inside the fuel tank (21), and the anti-surge partitions (22) are provided with a plurality of oil-passing through holes (23).

5. The vertical power take-off electric pump according to claim 1, characterized in that, The fuel tank assembly (2) further includes an air filter (24), a return oil filter (25), and a liquid level gauge (26) provided on the fuel tank (21); The air filter (24) is used to keep the internal and external air pressures of the fuel tank (21) balanced and filter impurities in the air entering the fuel tank (21); The return oil filter (25) is used to filter contaminants in the oil fluid flowing back to the fuel tank (21); The liquid level gauge (26) is used to monitor the liquid level height in the fuel tank (21).

6. The vertical power take-off electric pump according to claim 1, characterized in that, The bracket assembly (3) includes an L-shaped bracket beam (31) and a cushion block (32). The horizontal beam (311) of the L-shaped bracket beam (31) is connected to the bottom end of the outer shell of the fuel tank (21), and the vertical beam (312) of the L-shaped bracket beam (31) is used to be connected to the vehicle through the cushion block (32).

7. The vertical power take-off electric pump according to claim 6, characterized in that, The horizontal beam (311) is provided with a plurality of transverse fuel tank limiting holes (33), a plurality of strap fixing holes (34), and fuel tank straps (35) corresponding to the strap fixing holes (34). The bottom end of the outer shell of the fuel tank (21) is provided with fixing holes corresponding to the transverse fuel tank limiting holes (33). The horizontal beam (311) is bolted to the bottom end of the outer shell of the fuel tank (21) through the transverse fuel tank limiting holes (33) and the fixing holes. The plurality of strap fixing holes (34) are symmetrically arranged at both ends in the length direction of the horizontal beam (311). One end of the fuel tank strap (35) is connected to the strap fixing hole (34) at one end of the horizontal beam (311). The other end of the fuel tank strap (35) bypasses the outer surface of the fuel tank (21) and is connected to the strap fixing hole (34) at the other end of the horizontal beam (311).

8. The vertical power take-off electric pump according to claim 1, characterized in that, At least one lifting ring (18) is provided on the motor end cover (13).

9. An all-electric chassis, characterized in that, It includes the vertical power take-off electric pump according to any one of claims 1 to 8.

10. A vehicle, characterized in that, It includes the vertical power take-off electric pump according to any one of claims 1 to 8, or includes the pure electric chassis according to claim 9.

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