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

Abstract

The utility model provides a vertical type power take-off electric pump, pure electric chassis and vehicle relates to electric pump technical field, vertical type power take-off electric pump includes motor pump subassembly, oil tank subassembly and at least two support subassembly, motor pump subassembly is connected with oil tank subassembly, oil tank subassembly is located the motor pump subassembly below, and the support subassembly is connected with the motor pump subassembly. 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, and the power take-off electric pump is compact in structure, high in integration level and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of electric pump technology, specifically to a vertical power take-off electric pump, a pure electric chassis, and a vehicle. Background Technology

[0002] A power take-off (PTO) electric pump is an integrated hydraulic power unit mainly used in electric vehicles, such as light truck pure electric chassis, to provide a stable hydraulic power source for the vehicle's superstructure equipment, such as lifting platforms and hydraulic arms. Its core function is to convert electrical energy into hydraulic energy and drive the load equipment through high-pressure oil.

[0003] The existing power take-off electric pumps have separate installations for the high-voltage motor, oil pump, and oil tank. The oil pump is connected to the front end of the high-voltage motor, and the oil tank is mounted on top of the high-voltage motor. This results in a high center of gravity for the power take-off electric pump, making it prone to swaying during vehicle operation. Furthermore, the loose structure leads to low integration of the power take-off electric pump and inconvenient maintenance. Utility Model Content

[0004] This utility model aims to solve at least one of the above-mentioned problems.

[0005] To address the aforementioned problems, this utility model 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, including a motor pump assembly, a fuel tank assembly and at least two bracket assemblies. The motor pump assembly is connected to the fuel tank assembly, and the fuel tank assembly is located below the motor pump assembly. The at least two bracket assemblies are used to connect the fuel tank assembly to the vehicle.

[0007] The motor-pump assembly includes a high-voltage motor and an oil pump. The oil pump is vertically positioned below the high-voltage motor and placed inside the oil tank. The oil pump is connected to the motor end cover at the bottom of the high-voltage motor, and the high-voltage motor is connected to the oil tank outer flange in the oil tank assembly through the motor end cover.

[0008] Optionally, the motor pump assembly further includes an oil suction pipe, an oil suction filter element, and an oil outlet pipe. One end of the oil suction pipe is connected to the oil inlet of the oil pump, and the other end is connected to the oil suction filter element. One end of the oil outlet pipe is connected to the oil outlet of the oil pump, and the other end is connected to the motor end cover via a flange.

[0009] Optionally, the motor pump assembly further includes a hydraulic hinge joint, and the connection between the oil suction pipe and the oil pump, as well as the connection between the oil outlet pipe and the oil pump, are each provided with a corresponding hydraulic hinge joint.

[0010] Optionally, the fuel tank assembly further includes at least two anti-surge baffles, which are spaced apart within the fuel tank, and each anti-surge baffle has a plurality of oil passage holes.

[0011] Optionally, the fuel tank assembly further includes an air filter, a return oil filter, and a level gauge disposed on the fuel tank;

[0012] The air filter is used to maintain the air pressure balance inside and outside the fuel tank and to filter impurities in the air entering the fuel tank.

[0013] The return oil filter is used to filter contaminants in the oil flowing back to the oil tank;

[0014] The level gauge is used to monitor the liquid level in the oil tank.

[0015] Optionally, the bracket assembly includes an L-shaped bracket beam and a pad, wherein 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 via the pad.

[0016] Optionally, the horizontal beam is provided with multiple lateral limiting holes for the fuel tank, multiple strap fixing holes, and fuel tank straps corresponding to the strap fixing holes. The bottom end of the fuel tank shell is provided with fixing holes corresponding to the lateral limiting holes for the fuel tank. The horizontal beam is bolted to the bottom end of the fuel tank shell through the lateral limiting holes for the fuel tank and the fixing holes. The multiple strap fixing holes are symmetrically arranged at both ends of the horizontal beam along its length. 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 passes around the outer surface of the fuel tank shell and is connected to the strap fixing hole located at the other end of the horizontal beam.

[0017] Optionally, the motor end cover is provided with at least one lifting ring.

[0018] Secondly, this utility model provides a pure electric chassis, including the vertical power take-off electric pump as described in the first aspect.

[0019] Thirdly, this utility model provides a vehicle, including the vertical power take-off electric pump as described in the first aspect, or including the pure electric chassis as described in the second aspect.

[0020] The beneficial effects of this utility model of a vertical power take-off electric pump are:

[0021] By vertically mounting the oil pump of the motor pump assembly below the high-voltage motor and integrating it with the oil tank of the oil tank assembly to form a vertical stacked structure, the lateral space occupied can be significantly reduced. This is suitable for installation environments with narrow vehicle chassis, improving the rationality and integration of the overall layout. At the same time, it can also lower the center of gravity of the vertical power take-off electric pump, enhancing the vehicle's anti-tipping ability during driving. In addition, by placing the oil pump inside the oil tank, the oil flow path can be shortened, reducing external leakage points and reducing oil suction resistance, thus improving the efficiency of the hydraulic system. Furthermore, the motor end cover of the motor pump assembly is connected to the oil tank outer flange of the oil tank assembly. Disassembly only requires loosening the flange bolts to remove the entire assembly, facilitating quick component replacement or oil circuit maintenance, and significantly reducing maintenance difficulty and cost. Connecting the oil tank assembly to the vehicle frame through at least two bracket assemblies can effectively suppress structural shaking during vehicle bumps or sudden stops, reducing the risk of oil surge. Attached Figure Description

[0022] Figure 1 One of the structural schematic diagrams of a vertical power take-off electric pump provided in an embodiment of this utility model;

[0023] Figure 2 A second schematic diagram of the structure of the vertical power take-off electric pump provided in an embodiment of this utility model;

[0024] Figure 3 One of the structural schematic diagrams of the motor pump assembly provided in the embodiment of this utility model;

[0025] Figure 4 This is the second schematic diagram of the structure of the motor pump assembly provided in the embodiment of the present utility model;

[0026] Figure 5 One of the structural schematic diagrams of the fuel tank assembly provided in the embodiment of this utility model;

[0027] Figure 6 This is the second structural schematic diagram of the fuel tank assembly provided in the embodiment of the present utility model;

[0028] Figure 7 A schematic diagram of the structure of the wave-blocking baffle provided in the embodiment of this utility model;

[0029] Figure 8 A schematic diagram of the structure of the L-shaped support beam provided in an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Motor pump assembly; 11. High-voltage motor; 12. Oil pump; 13. Motor end cover; 14. Suction pipe; 15. Suction filter element; 16. Oil outlet pipe; 17. Hydraulic articulated joint; 18. Lifting ring; 2. Oil tank assembly; 21. Oil tank; 22. Anti-surge baffle; 23. Oil passage 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. Oil tank lateral limiting hole; 34. Strap fixing hole; 35. Oil tank strap. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0033] The term "comprising" and its variations as used herein are open-ended, meaning "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"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0034] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0035] To address the problems existing in the aforementioned related technologies, this embodiment provides a vertical power take-off electric pump, a pure electric chassis, and a vehicle.

[0036] like Figures 1 to 5As shown in the figure, a vertical power take-off electric pump provided by this utility model embodiment includes a motor pump assembly 1, an oil tank assembly 2 and at least two bracket assemblies 3. The motor pump assembly 1 is connected to the oil tank assembly 2, and the oil tank assembly 2 is located below the motor pump assembly 1. The at least two bracket assemblies 3 are used to connect the oil tank assembly 2 and the vehicle.

[0037] 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 oil tank 21. The oil pump 12 is connected to the motor end cover 13 at the bottom of the high-voltage motor 11, and the high-voltage motor 11 is connected to the outer flange of the oil tank 21 in the oil tank assembly 2 through the motor end cover 13.

[0038] 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 to allow flange connection between them. The fuel tank assembly 2 is located below the motor pump assembly 1, forming a vertical stacked structure. At least two support assemblies 3 are provided at the bottom or side of the fuel tank assembly 2 to connect it to the vehicle, thereby fixing the motor pump assembly 1 and the fuel tank assembly 2 to the vehicle. The motor pump assembly 1 includes a high-voltage motor 11 and a fuel pump 12. The fuel pump 12 is vertically positioned below the high-voltage motor 11 and placed in the fuel tank. Inside tank 21, oil pump 12 is connected to motor end cover 13 at the bottom of high-voltage motor 11, and high-voltage motor 11 is connected to the outer flange of oil tank 21 in oil tank assembly 2 through motor end cover 13, so that oil pump 12 is placed inside oil tank 21. There is also an oil circuit between high-voltage motor 11 and oil pump 12. In actual operation, high-voltage motor 11 operates under rated conditions, converting electrical energy into mechanical kinetic energy to drive oil pump 12 to rotate. Oil pump 12 generates negative pressure, which draws oil from oil tank 21 into oil pump 12 and converts it into pressure output, which is then delivered to hydraulic load equipment through hydraulic pipeline to provide power to it.

[0039] In this embodiment, by vertically positioning the oil pump 12 of the motor pump assembly 1 below the high-voltage motor 11 and integrating it with the oil tank 21 of the oil tank assembly 2 to form a vertical stacked structure, the lateral space occupied can be significantly reduced. This is suitable for installation environments with narrow vehicle chassis, improving the rationality and integration of the overall layout. At the same time, it can also lower the center of gravity of the vertical power take-off electric pump, enhancing the vehicle's anti-overturning ability during driving. In addition, by placing the oil pump 12 inside the oil tank 21, the oil flow path can be shortened, reducing external leakage points and reducing oil suction resistance, thus improving the efficiency of the hydraulic system. Furthermore, the motor end cover 13 of the motor pump assembly 1 is connected to the outer flange of the oil tank 21 of the oil tank assembly 2. During disassembly, only the flange bolts need to be loosened to remove the entire assembly, facilitating quick replacement of components or maintenance of the oil circuit, significantly reducing maintenance difficulty and cost. By connecting the oil tank assembly 2 to the vehicle frame through at least two bracket assemblies 3, structural shaking during vehicle bumps or sudden stops can be effectively suppressed, reducing the risk of oil surge.

[0040] Optionally, such as Figure 3 and Figure 4 As shown, the motor pump assembly 1 also 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 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 of the oil pump 12, and the other end is connected to the motor end cover (13) through a flange.

[0041] Specifically, the motor pump assembly 1 also includes an oil suction pipe 14, an oil suction filter element 15, and an oil outlet pipe 16. The oil suction pipe 14 and the oil outlet pipe 16 are hard 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 threaded 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 connected to the motor end cover (13) through a flange.

[0042] The oil in the oil tank 21 is sequentially drawn into the oil pump 12 through the oil suction filter element 15 and the oil suction pipe 14, and then output to the hydraulic load equipment through the oil outlet pipe 16 to provide power to it. The output end of the oil outlet pipe 16 is fixed to the motor end cover 13 by a flange for easy connection to the hydraulic load's inlet pipeline.

[0043] Optionally, such as Figure 3 and Figure 4 As shown, the motor pump assembly 1 also includes a hydraulic hinge joint 17. The connection between the oil suction pipe 14 and the oil pump 12, and the connection between the oil outlet pipe 16 and the oil pump 12, are all provided with corresponding hydraulic hinge joints 17.

[0044] Specifically, the motor pump assembly 1 also includes a hydraulic hinge joint 17. The connection points of the oil suction pipe 14 and the oil pump 12, as well as the connection points of the oil outlet pipe 16 and the oil pump 12, are each equipped with a corresponding hydraulic hinge joint 17. The hydraulic hinge joint 17 allows the pipeline to deflect at a certain angle during installation or operation, accommodating relative displacement caused by vehicle bumps, chassis deformation, or assembly errors, avoiding stress concentration caused by rigid connections. When the vehicle is in motion, the hydraulic hinge joint can absorb vibration and impact, reducing fatigue damage to the pipeline and interfaces, and extending service life. The hydraulic hinge joint 17 supports quick connection and disconnection of pipelines without the need for special tools, simplifying maintenance operations such as filter replacement and oil pump overhaul. It is compatible with rigid seamless steel pipes or hoses of different diameters, improving compatibility.

[0045] Optionally, such as Figures 5 to 7 As shown, the oil tank assembly 2 also includes at least two anti-surge baffles 22, which are spaced apart inside the oil tank 21, and each anti-surge baffle 22 is provided with a plurality of oil passage holes 23.

[0046] Specifically, the oil tank assembly 2 also includes at least two anti-surge baffles 22. The at least two anti-surge baffles 22 are spaced apart inside the oil tank 21, which can gradually weaken the energy transmission of oil fluctuations and form a "damping" effect. The anti-surge baffles 22 are provided with multiple oil passage holes 23, which can retain the fluidity of the oil and prevent the oil pump from sucking in air. They can also disperse the kinetic energy of the oil through the holes, so as to allow the oil to flow slowly but prevent it from shaking rapidly.

[0047] Optionally, such as Figure 5 As shown, the oil tank assembly 2 also includes an air filter 24, an oil return filter 25, and a level gauge 26 disposed on the oil tank 21;

[0048] The air filter 24 is used to maintain the internal and external air pressure balance of the oil tank 21 and filter impurities in the air entering the oil tank 21.

[0049] The return oil filter 25 is used to filter contaminants in the oil returning to the oil tank 21;

[0050] The level gauge 26 is used to monitor the liquid level in the oil tank 21.

[0051] Specifically, the fuel tank 21 is equipped with flange structures corresponding to the air filter 24, the return oil filter 25, and the level gauge 26, so that the air filter 24, the return oil filter 25, and the level gauge 26 are flanged and connected to the fuel tank 21. The air filter 24 is located at the top of the fuel tank and is in contact with the outside environment, ensuring that the fuel tank 21 can breathe freely when the fuel is consumed or the temperature changes, so as to achieve pressure balance inside and outside the fuel tank. Based on a physical interception and adsorption mechanism, it filters impurities in the air through the filter element to ensure that the air entering the fuel tank 21 is clean. It also serves as the filler port, where the filter screen can filter impurities in the fuel during refueling, and the impurities can be cleaned by removing the filter screen. The return oil filter 25 is installed on the return oil line of the fuel pump 12 to filter contaminants in the fuel returning to the fuel tank 21. The level gauge 26 is installed on the side wall or top of the fuel tank 21 for easy observation by the driver or maintenance personnel to monitor the liquid level in the fuel tank 21.

[0052] For example, in actual operation, the high-voltage motor 11 operates under rated conditions, converting electrical energy into mechanical kinetic energy to drive the oil pump 12 to rotate. The operation of the oil pump 12 creates negative pressure, which filters impurities in the oil through the suction filter element 15 installed at the oil inlet and then draws it into the oil pump 12. The oil is then discharged through the oil outlet, converted into pressure output, and transported to the hydraulic load equipment through the hydraulic pipeline to provide power. After the oil enters the return oil filter 25 from the system return oil pipeline, it passes through the pores or filter media layer inside the filter element of the return oil filter 25, such as glass fiber, metal mesh, paper, etc., to intercept solid particles, such as metal shavings and rubber fragments, as well as impurities, on the surface or inside of the filter element of the return oil filter 25. The cleaned oil returns to the oil tank 21 through the outlet of the return oil filter 25, completing the circulation.

[0053] Optionally, such as Figure 8 As shown, the bracket assembly 3 includes an L-shaped bracket beam 31 and a pad 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 pad 32.

[0054] Specifically, the bracket assembly 3 includes an L-shaped bracket beam 31 and a pad 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 pad 32. The horizontal beam 311 and the connection are in an L-shape.

[0055] Optionally, such as Figure 2 and Figure 8As shown, the horizontal beam 311 is provided with multiple lateral limiting holes 33 for the fuel tank, multiple 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 lateral limiting holes 33 for the fuel tank. The horizontal beam 311 is bolted to the bottom end of the outer shell of the fuel tank 21 through the lateral limiting holes 33 for the fuel tank and the fixing holes. The multiple strap fixing holes 34 are symmetrically arranged at both ends of the horizontal beam 311 along its length. 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 passes around the outer surface of the outer shell of the fuel tank 21 and is connected to the strap fixing hole 34 located at the other end of the horizontal beam 311.

[0056] Specifically, the horizontal beam 311 is provided with multiple lateral limiting holes 33 for the fuel tank, multiple strap fixing holes 34, and fuel tank straps 35 corresponding to the strap fixing holes 34. The bottom end of the fuel tank 21 shell is provided with fixing holes corresponding to the lateral limiting holes 33 for the fuel tank. The horizontal beam 311 is bolted to the bottom end of the fuel tank 21 shell through the lateral limiting holes 33 and fixing holes. The multiple strap fixing holes 34 are symmetrically arranged at both ends of the horizontal beam 311 along its length. One end of the fuel tank strap 35 is connected to the bottom end of the horizontal beam 311. The other end of the tank strap 35 is connected to the strap fixing hole 34. It wraps around the outer surface of the tank 21 shell and is connected to the strap fixing hole 34 at the other end of the horizontal beam 311. The tank strap 35 is a steel strap with a rubber sleeve. Both ends of the tank strap 35 are provided with screws. The strap fixing holes 34 at both ends of the horizontal beam 311 are provided with multiple nuts corresponding to the screws. The tank strap 35 is threadedly connected to the strap fixing holes 34 at both ends of the horizontal beam 311 through the screws and nuts to achieve a double nut or multi-nut connection.

[0057] Optionally, such as Figure 3 and Figure 4 As shown, the motor end cover 13 is provided with at least one lifting ring 18.

[0058] Specifically, the motor end cover 13 is provided with at least one lifting ring 18. Before installation or after removing the mounting bolts of the flange, the motor pump assembly 1 can be removed and put in through the lifting ring 18 to facilitate installation and maintenance.

[0059] This utility model provides a pure electric chassis, including the vertical power take-off electric pump as described above.

[0060] The present invention provides a vehicle comprising, as described above, a vertical power take-off electric pump, or, as described above, a pure electric chassis.

[0061] The beneficial effects of the pure electric chassis and vehicle in this embodiment compared to the prior art are the same as those of the vertical power take-off electric pump described above, and will not be repeated here.

[0062] Although the present invention has been disclosed above, its protection scope 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 all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A vertical power take-off electric pump characterized by, It includes a motor pump assembly (1), a fuel tank assembly (2) and at least two bracket assemblies (3), wherein 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), and 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 oil tank (21). The oil pump (12) is connected to the motor end cover (13) at the bottom of the high-voltage motor (11), and the high-voltage motor (11) is connected to the outer flange of the oil tank (21) in the oil tank assembly (2) through the motor end cover (13).

2. The in-line mechanical pump of claim 1, wherein, The motor pump assembly (1) also 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 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 of the oil pump (12), and the other end is connected to the motor end cover (13) via a flange.

3. The in-line mechanical pump of claim 2, wherein, The motor pump assembly (1) also includes a hydraulic hinge joint (17). The connection between the oil suction pipe (14) and the oil pump (12), as well as the connection between the oil outlet pipe (16) and the oil pump (12), are all provided with corresponding hydraulic hinge joints (17).

4. The in-line mechanical pump of claim 1, wherein, The oil tank assembly (2) further includes at least two anti-surge baffles (22), which are spaced apart inside the oil tank (21), and each anti-surge baffle (22) has a plurality of oil passage holes (23).

5. The in-line mechanical pump of claim 1, wherein, The oil tank assembly (2) also includes an air filter (24), a return oil filter (25), and a level gauge (26) disposed on the oil tank (21). The air filter (24) is used to maintain the internal and external air pressure balance of the oil tank (21) and filter impurities in the air entering the oil tank (21); The return oil filter (25) is used to filter contaminants in the oil flowing back to the oil tank (21); The level gauge (26) is used to monitor the liquid level in the oil tank (21).

6. The in-line mechanical pump of claim 1, wherein, The bracket assembly (3) includes an L-shaped bracket beam (31) and a pad (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 pad (32).

7. The in-line mechanical pump of claim 6, wherein, The horizontal beam (311) is provided with multiple oil tank lateral limiting holes (33), multiple strap fixing holes (34), and oil tank straps (35) corresponding to the strap fixing holes (34). The bottom end of the outer shell of the oil tank (21) is provided with fixing holes corresponding to the oil tank lateral limiting holes (33). The horizontal beam (311) is bolted to the bottom end of the outer shell of the oil tank (21) through the oil tank lateral limiting holes (33) and the fixing holes. Multiple strap fixing holes (34) are symmetrically arranged at both ends of the horizontal beam (311) in the length direction. One end of the oil tank strap (35) is connected to the strap fixing hole (34) located at one end of the horizontal beam (311). The other end of the oil tank strap (35) passes around the outer surface of the outer shell of the oil tank (21) and is connected to the strap fixing hole (34) located at the other end of the horizontal beam (311).

8. The in-line mechanical pump of claim 1, wherein, At least one lifting ring (18) is provided on the motor end cover (13).

9. An electric-only chassis, characterized in that Including the vertical power take-off electric pump as described in any one of claims 1 to 8.

10. A vehicle characterized by comprising: Includes the vertical power take-off electric pump as described in any one of claims 1 to 8, or includes the pure electric chassis as described in claim 9.

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