Electric cleaning vehicle

Abstract

According to the electric cleaning vehicle, the water pump unit is installed below the tail of the chassis, the power battery assembly is installed below the chassis, and the arrangement mode can reduce the occupied space of the water pump unit and the power battery assembly on the chassis, so that more space is saved for installation of a water tank on the chassis; therefore, the size of the water tank can be increased on the premise that the wheelbase of the electric cleaning vehicle is not changed, and the effects of improving the water loading capacity and the single-tank water operation capacity of the electric cleaning vehicle, reducing the operation cost and improving the cleaning operation efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sanitation mechanical equipment, in particular to an electric cleaning vehicle. BACKGROUND

[0002] The electric cleaning vehicle is a cleaning device driven by electricity, which is specially used for cleaning work in public places such as urban streets, squares, parks, industrial areas and commercial areas. It uses electricity as a power source, and has the advantages of environmental protection, low noise and low operating cost compared with traditional fuel cleaning vehicles.

[0003] The electric cleaning vehicle mainly works in the city, and the overall length needs to be controlled within a reasonable length to ensure good passability, so the wheelbase of different tonnage pure electric cleaning vehicles will be within a reasonable range.

[0004] At present, the mainstream electric cleaning vehicle generally places the water pump driving mechanism or power battery above the rear beam of the vehicle head, so as to occupy the vehicle space. Under a certain wheelbase of the whole vehicle, the length of the water tank and its water storage capacity will be affected. However, the water tank directly affects the water storage capacity and the single-tank water working capacity, and further affects the operating cost and working efficiency. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide an electric cleaning vehicle which can increase the size of the water tank under the premise of keeping the wheelbase of the electric cleaning vehicle unchanged, so as to improve the water storage capacity and single-tank water working capacity of the electric cleaning vehicle, reduce the operating cost and improve the cleaning working efficiency.

[0006] The embodiments of the present application can be implemented as follows:

[0007] In a first aspect, the utility model provides an electric cleaning vehicle, which comprises a chassis, a water tank, a water pump unit and a power battery assembly.

[0008] The water tank is installed on the chassis.

[0009] The water pump unit is installed below the tail of the chassis, and the water pump unit is connected with the water tank through a pipeline.

[0010] The power battery assembly is installed below the chassis, and the power battery assembly is used for supplying power to the water pump unit.

[0011] In an optional embodiment, the water pump unit comprises a hoisting support, a bearing chassis, a water pump and a motor.

[0012] The top of the hoisting support is connected to the tail beam of the chassis.

[0013] The bearing chassis is connected to the bottom of the hoisting support.

[0014] The water pump and the motor are installed on the bearing chassis;

[0015] The power battery assembly is used for supplying power for the motor.

[0016] In an optional embodiment, the lifting supports include a left lifting support and a right lifting support;

[0017] The top of the left lifting support is connected to the left rear beam of the chassis, and the top of the right lifting support is connected to the right rear beam of the chassis;

[0018] The bottom of the left lifting support and the bottom of the right lifting support are connected to the bearing chassis.

[0019] In an optional embodiment, the water pump unit further includes a water pump mounting support and a motor mounting support;

[0020] The water pump is mounted on the bearing chassis through the water pump mounting support;

[0021] The motor is mounted on the bearing chassis through the motor mounting support.

[0022] In an optional embodiment, the water pump includes a first water pump and a second water pump; the first water pump is located on the left side of the left lifting support;

[0023] The number of the motor is one, the second water pump is located between the left lifting support and the right lifting support, and the first water pump and the second water pump are both drivingly connected to the motor; or, the number of the motor is two, which are a first motor and a second motor, the second water pump is located on the right side of the right lifting support, the first water pump is drivingly connected to the first motor, and the second water pump is drivingly connected to the second motor.

[0024] In an optional embodiment, when the number of the motor is one, the second water pump is close to the right lifting support and away from the left lifting support, the motor is located on the right side of the right lifting support, the motor is connected to a transfer case through a first transmission shaft, the transfer case is connected to the first water pump, and the transfer case is connected to the second water pump through a second transmission shaft;

[0025] When the number of the motor is two, the second water pump is located on the right side of the right lifting support, the first motor and the second motor are both close to the left lifting support and away from the right lifting support, the first motor is connected to the first water pump through a bearing body, and the second motor is connected to the second water pump through a transmission shaft.

[0026] In an optional embodiment, the electric cleaning vehicle further comprises a rear work platform, and the rear work platform is located at the rear side of the water tank.

[0027] A lifting point is arranged on the top surface of the second water pump, and the vertical projection of the lifting point on the ground is located between the vertical projections of the water tank and the rear work platform on the ground.

[0028] In an optional embodiment, the number of water pumps and the number of electric machines are both one.

[0029] The water pump is located at the left side of the left lifting support.

[0030] The electric machine is located between the left lifting support and the right lifting support, or the electric machine is located at the right side of the right lifting support.

[0031] In an optional embodiment, when the electric machine is located between the left lifting support and the right lifting support, the electric machine is connected with the water pump through a bearing body.

[0032] When the electric machine is located at the right side of the right lifting support, the electric machine is connected with the water pump through a transmission shaft.

[0033] Compared with the prior art, the beneficial effects of the embodiments of the present application include, for example:

[0034] By installing the water pump unit under the tail of the chassis and installing the power battery assembly below the chassis, this arrangement can reduce the occupied space of the water pump unit and the power battery assembly on the chassis, thereby saving more space for the installation of the water tank on the chassis, so as to increase the size of the water tank under the premise of keeping the wheelbase of the electric cleaning vehicle unchanged, thereby achieving the effects of increasing the water carrying capacity of the electric cleaning vehicle and the single-tank water working capacity, reducing the operating cost, and improving the cleaning operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art of the present application, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0036] Figure 1 It is a schematic diagram of the electric cleaning vehicle of the embodiments of the present application.

[0037] Figure 2 It is a second schematic diagram of the electric cleaning vehicle of the embodiments of the present application.

[0038] Figure 3 for Figure 1 Schematic diagram of a greywater pipeline;

[0039] Figure 4 for Figure 3 Internal structure diagram;

[0040] Figure 5 for Figure 1 Front view of a Type A water pump unit;

[0041] Figure 6 for Figure 5 Top view;

[0042] Figure 7 To be Figure 6 A schematic diagram showing the motor, water pump, motor controller, and transfer case hidden.

[0043] Figure 8 for Figure 6 A schematic diagram of the high-pressure pump and its mounting bracket.

[0044] Figure 9 for Figure 6 AA section view;

[0045] Figure 10 for Figure 1 A partial schematic diagram from a top-down perspective;

[0046] Figure 11 for Figure 1 Front view of the B-type water pump unit;

[0047] Figure 12 for Figure 11 Top view;

[0048] Figure 13 for Figure 1 Front view of a C-type water pump unit;

[0049] Figure 14 for Figure 13 Top view;

[0050] Figure 15 for Figure 1 Front view of a D-type water pump unit;

[0051] Figure 16 for Figure 15 Top view.

[0052] Icons: 10-Chassis; 11-Front end; 12-Rear work platform; 13-Water cannon and rear sprinkler combination device; 14-Rear protection; 15-Low-pressure water system; 16-High-pressure water system; 17-Counter-flushing; 18-Duckbill; 19-High-pressure front spray frame; 20-Water filter; 21-High-pressure spray gun outlet connector; 22-Left side beam; 23-Right side beam; 30-Water tank; 31-Water level pipe; 32-Spherical front end cap; 33-Spherical rear end cap; 34-Corrugated bend baffle; 35-Water tank base frame; 36-Water tank support seat; 37-Overflow air inlet pipe; 40-Water pump unit; 411-Left side lifting bracket; 412-Right side lifting bracket 42-Bearing base frame; 43-Water pump; 431-First water pump; 432-Second water pump; 433-Lifting point; 44-Motor; 441-First motor; 442-Second motor; 45-Motor controller; 46-Water pump mounting bracket; 461-First water pump mounting bracket; 462-Second water pump mounting bracket; 47-Motor mounting bracket; 471-First motor mounting bracket; 472-Second motor mounting bracket; 48-Motor controller mounting bracket; 491-Drive shaft; 492-First drive shaft; 493-Second drive shaft; 494-Transfer case; 495-Bearing body; 50-Power battery assembly. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0055] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0056] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0057] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0058] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0060] refer to Figure 1 and Figure 2 This application discloses an electric cleaning vehicle, which includes a chassis 10 and a front end 11, a water tank 30, a rear work platform 12, a water cannon and rear spraying combined device 13, a rear guard 14, a water pump unit 40, a low-pressure water system 15, a high-pressure water system 16, a power battery pack 50, a counter-flushing device 17, a duckbill 18, a high-pressure front spray frame 19, a water filter 20, a high-pressure spray gun outlet connector 21, and a water level pipe 31, etc.

[0061] The front end 11 and chassis 10 are designed as a single unit, which can better optimize space utilization and improve work efficiency. Of course, in some embodiments, the front end 11 can also be mounted on the chassis 10 for easy maintenance and replacement.

[0062] The chassis 10 is a pure electric chassis 10, integrating an electrical control system and an air source, allowing operations to be completed from the cab at the front 11. The air source provides compressed air to the superstructure. The power battery pack 50 is installed on the side of the chassis 10, meaning the battery layout is side-mounted, providing both high-voltage and low-voltage power. The chassis 10's cooling system also meets the cooling needs of the superstructure, providing circulating coolant to the superstructure's motor 44 and controller. Of course, the power battery pack 50 can also be centrally located, as long as it is installed under the chassis 10.

[0063] Combination Figure 1 , Figure 3 and Figure 4 The water tank 30 is mounted on the chassis 10 and located behind the front of the vehicle 11. Specifically, a water tank base 35 is provided at the bottom of the water tank 30. The water tank base 35 is fixedly connected to the chassis 10. A water tank support 36 is connected between the water tank 30 and the water tank base 35. The water tank support 36 is made by stamping. The water tank support 36 can fix the water tank 30 on the water tank 30 bracket to ensure the stability of the water tank 30 on the chassis 10.

[0064] The front and / or rear of the water tank 30 can be end caps made of spherical material. Specifically, the front of the water tank 30 uses a spherical front end cap 32, and the rear of the water tank 30 uses a spherical rear end cap 33. The spherical front end cap 32 and the spherical rear end cap 33 can be formed by stamping, which improves material utilization and reduces production costs, thereby saving on the manufacturing cost of the water tank 30. In addition, the spherical end caps distribute stress evenly, which can improve the overall structural strength and rigidity of the water tank 30.

[0065] The water tank 30 is integrally formed using a tank-encasing molding process. In other words, the water tank 30 can be molded as a single piece, which reduces the number of welds, improves the sealing performance of the water tank 30, and reduces the leakage rate of the water tank 30.

[0066] The water tank 30 may have one or more corrugated baffles 34 inside. These corrugated baffles 34 may have a retaining ring structure to improve their connection strength with the water tank 30. The corrugated baffles 34 can divide the internal space of the water tank 30 into two or more chambers, and each corrugated baffle 34 has a connecting port that connects adjacent chambers. Therefore, during acceleration or deceleration of the electric cleaning vehicle, the contact between the corrugated baffles 34 and the liquid can disperse the liquid impact force, preventing violent sloshing of the liquid inside the water tank 30, ensuring the safety of the water tank 30, and improving the overall strength of the water tank 30. Furthermore, the bent design can increase the structural strength of the baffles without adding too much weight, and can guide liquid flow, further reducing the impact of liquid sloshing.

[0067] An overflow air inlet pipe 37 is provided on the periphery of the water tank 30. The overflow air inlet pipe 37 connects to the internal space of the water tank 30. There is an air intake at the upper part of the overflow air inlet pipe 37, which allows the internal space of the water tank 30 to communicate with the atmospheric environment, thereby avoiding damage to the water tank 30 due to negative pressure. There is an overflow port at the upper part of the overflow air inlet pipe 37. The overflow port ensures that the water level in the pipe will not be higher than the overflow port, thus determining the maximum water capacity and preventing overload.

[0068] A water level indicator pipe 31 is installed at the front of the water tank 30, so that the driver can directly see the water level of the water tank 30 from the cab, which is convenient for arranging work plans.

[0069] Refer again Figure 1 and Figure 2 The rear work platform 12 is installed above the rear of the chassis 10, behind the water tank 30, primarily for facilitating various operations and maintenance tasks for workers. The platform steps are made of 201 stainless steel or aluminum alloy. 201 stainless steel is a chromium-nickel-manganese alloy steel with good corrosion resistance, strength, and durability, suitable for outdoor use and relatively economical. Aluminum alloy is known for its lightweight and high strength, while also possessing good corrosion resistance. For applications requiring reduced vehicle weight, aluminum alloy is an excellent choice. Furthermore, the surface of aluminum alloy can be anodized to further improve its wear resistance and aesthetics. The railings are made of bent carbon steel or aluminum tubing. Carbon steel offers high strength and rigidity, suitable for applications requiring resistance to significant external forces. Bending processes allow for the creation of ergonomically designed railing shapes that are both aesthetically pleasing and practical. Compared to carbon steel, aluminum tubing is lighter and easier to process. Aluminum itself has some corrosion resistance, but its hardness and strength are lower than carbon steel.

[0070] The water cannon and rear sprinkler combined device 13 is installed on the rear side of the rear work platform 12. Its purpose is to integrate the water cannon and rear sprinkler into one system by combining two functions, reducing redundant components in separate systems such as pumps, valves, and pipes, thereby simplifying the overall structure. This not only ensures efficient operation but also simplifies the vehicle's piping structure, reduces weight, and lowers costs.

[0071] The rear guardrail is located on the rear side of the rear work platform 12. The rear guardrail can be made of carbon steel to absorb and disperse impact energy, thereby reducing the direct impact force and providing an additional layer of protection in the event of a rear-end collision, reducing damage to the vehicle's internal structure and occupants.

[0072] The side guardrail is served by the power battery pack 50, employing a battery cover-style integrated side protection design. This design combines the side guardrail with the battery protective cover into a single structure. This not only saves space but also reduces the number of external vehicle components, simplifying the exterior design. The battery cover can be made of carbon steel or aluminum alloy.

[0073] The electric cleaning vehicle in this embodiment has two cleaning modes: high pressure and low pressure. It can also be equipped with spray, greening irrigation, and reel washing devices.

[0074] The high-pressure water jet system 16 can be used to clean old stains and viscous dirt on squares and roads, while the handheld high-pressure spray gun can be widely used to clean general equipment, including product bodies.

[0075] The duckbill 18, counter-flushing 17, and rear sprinkler of the low-pressure water system 15 can be used for washing and sprinkling operations on roads, squares, and other sites, respectively; the water cannon is suitable for long-distance washing and sprinkling operations.

[0076] In this embodiment, the water pump unit 40 is installed below the rear of the chassis 10 and is powered by the power battery pack 50. The water pump unit 40 is connected to the water tank 30 via a pipeline. Its main function is to transport the liquid in the water pipe through power drive.

[0077] In this way, by installing the water pump unit 40 under the rear of the chassis 10 and the power battery pack 50 under the chassis 10, the space occupied by the water pump unit 40 and the power battery pack 50 on the chassis 10 can be reduced, thereby saving more space for the installation of the water tank 30 on the chassis 10. This allows the size of the water tank 30 to be increased without changing the wheelbase of the electric cleaning vehicle, thereby increasing the water capacity and single-tank water operation capacity of the electric cleaning vehicle, reducing operating costs and improving cleaning efficiency.

[0078] Detailed, combined Figure 5 and Figure 6 The water pump unit 40 includes a lifting bracket, a support frame 42, a water pump 43, a motor 44, and a motor controller 45. The top of the lifting bracket is connected to the rear beam of the chassis 10; the support frame 42 is connected to the bottom of the lifting bracket; the water pump 43, motor 44, and motor controller 45 are all mounted on the support frame 42, so the water pump unit 40 can be placed under the rear beam of the vehicle, and integrates the water pump 43 drive motor 44, electrical control, high and low pressure water pumps 43, and related accessories. The motor controller 45 receives signals from the vehicle controller in the cab to control the operation of the motor 44. The operation of the motor 44 drives the water pump 43 to transport the liquid in the water tank 30.

[0079] The motor controller 45 is electrically connected to the motor 44, and the power battery pack 50 is electrically connected to both the motor controller 45 and the motor 44. The power battery pack 50 is used to supply power to the motor controller 45 and the motor 44.

[0080] The lifting brackets include a left lifting bracket 411 and a right lifting bracket 412. The top of the left lifting bracket 411 can be connected to the left rear beam 22 of the chassis 10 by bolts or other means, and the top of the right lifting bracket 412 can be connected to the right rear beam 23 of the chassis 10 by bolts or other means. The bottom of the left lifting bracket 411 and the bottom of the right lifting bracket 412 can be connected to the load-bearing underframe 42 by bolts or other means. In this way, the load-bearing underframe 42 is lifted under the rear beam of the vehicle by the left and right lifting brackets 412, ensuring reliability.

[0081] To ensure the stability and reliability of the water pump 43, motor 44, and motor controller 45 mounted on the support frame 42, and to facilitate modular assembly and disassembly, the water pump unit 40 also includes a water pump mounting bracket 46, a motor mounting bracket 47, and a motor controller mounting bracket 48 (see reference). Figures 7 to 9 The water pump 43 is mounted on the support frame 42 via the water pump mounting bracket 46, the motor 44 is mounted on the support frame 42 via the motor mounting bracket 47, and the motor controller 45 is mounted on the support frame 42 via the motor controller mounting bracket 48. This allows the water pump 43 and water pump mounting bracket 46 to be assembled into one unit, the motor 44 and motor mounting bracket 47 to be assembled into one unit, and the motor controller 45 and motor controller mounting bracket 48 to be assembled into one unit, before being sequentially installed onto the support frame 42. The water pump mounting bracket 46, motor mounting bracket 47, and motor controller mounting bracket 48 can all be bolted to the support frame 42, facilitating disassembly and maintenance and improving the ease of maintenance for the motor 44, motor controller 45, and water pump 43 (high and low pressure water pumps 43).

[0082] The motor controller 45 is located between the left-side lifting bracket 411 and the right-side lifting bracket 412 to maximize the use of space on the support frame 42 and improve structural compactness. Of course, in some embodiments, the motor controller 45 may also be installed in other locations on the vehicle; this application does not impose specific restrictions on its installation location.

[0083] It should be noted that in this application, the directions of front, back, left, and right are taken with reference to the direction of the washing vehicle, that is, the vehicle's length in the front-back direction, its width in the left-right direction, and its height in the vertical direction.

[0084] The layout of the water pump 43, motor 44, and motor controller 45 in the water pump unit 40 mainly includes the following forms A to D. It should be noted that, in this application, one of the first water pump 431 and the second water pump 432 is a low-pressure pump, and the other is a high-pressure pump. For example, in forms A to D below, the first water pump 431 is a low-pressure pump, and the second water pump 432 is a high-pressure pump. Forms A to D are described in detail below:

[0085] like Figure 5 and Figure 6 As shown in form A, a single motor 44 drives high and low pressure water pumps 43:

[0086] The water pump 43 includes a first water pump 431 and a second water pump 432; the first water pump 431 is located on the left side of the left-side hoisting bracket 411;

[0087] There is one motor 44. The second water pump 432 is located between the left hoisting bracket 411 and the right hoisting bracket 412. The first water pump 431 and the second water pump 432 are both driven by one motor 44.

[0088] In detail, the motor controller 45 is located near the left-side lifting bracket 411 and away from the right-side lifting bracket 412. The second water pump 432 is located between the motor controller 45 and the right-side lifting bracket 412, that is, the second water pump 432 is near the right-side lifting bracket 412 and away from the left-side lifting bracket 411. The motor 44 is located to the right of the right-side lifting bracket 412. The motor 44 is connected to the transfer case 494 via the first drive shaft 492. The transfer case 494 is connected to the first water pump 431 and to the second water pump 432 via the second drive shaft 493. In this way, the transfer case 494 allows one motor 44 to drive both the low-pressure pump and the high-pressure pump, reducing the number of power sources.

[0089] Since there are two water pumps 43, the water pump mounting bracket 46 includes a first water pump mounting bracket 461 and a second water pump mounting bracket 462. The first water pump 431 is mounted on the support base 42 through the first water pump mounting bracket 461, and the second water pump 432 is mounted on the support base 42 through the second water pump mounting bracket 462.

[0090] It should also be noted that in form A, such as Figure 10 As shown, a lifting point 433 is provided on the top surface of the second water pump 432. The vertical projection of the lifting point 433 on the ground is located between the vertical projections of the water tank 30 and the rear working platform 12 on the ground. This allows the hook to be easily lowered from the gap between the rear working platform 12 and the water tank 30 onto the second water pump 432 to hook the lifting point 433, thereby facilitating the disassembly and maintenance of the second water pump 432.

[0091] like Figure 11and Figure 12 As shown in form B, dual motors 44 drive high and low pressure water pumps 43:

[0092] Compared to form A, the main changes are in the number of motors 44 and the layout of the motors 44 and motor controller 45, as well as the transmission mechanism. Specifically, in form B, there are two motors 44: a first motor 441 and a second motor 442. The second water pump 432 is located on the right side of the right-side lifting bracket 412. The first water pump 431 is driven by the first motor 441, and the second water pump 432 is driven by the second motor 442. Thus, each water pump 43 is driven by one motor 44.

[0093] In detail, the motor controller 45 is close to the right-side hoisting bracket 412 and far away from the left-side hoisting bracket 411. The second water pump 432 is located to the right of the right-side hoisting bracket 412. The first motor 441 and the second motor 442 are both located between the left-side hoisting bracket 411 and the motor controller 45. That is, the first motor 441 and the second motor 442 are both close to the left-side hoisting bracket 411 and far away from the right-side hoisting bracket 412. The first motor 441 is connected to the first water pump 431 through the bearing body 495, and the second motor 442 is connected to the second water pump 432 through the drive shaft 491.

[0094] Since there are two motors 44, the motor mounting bracket 47 includes a first motor mounting bracket 471 and a second motor mounting bracket 472. The first motor 441 is mounted on the support base 42 through the first motor mounting bracket 471, and the second motor 442 is mounted on the support base 42 through the second motor mounting bracket 472.

[0095] like Figure 13 and Figure 14 In form C shown, a single motor 44 directly drives a low-pressure water pump 43 via a bearing housing 495.

[0096] There is one water pump 43 and one motor 44. In this configuration, the water pump 43 is a low-pressure water pump, located to the left of the left lifting bracket 411. The motor 44 is located between the left lifting bracket 411 and the right lifting bracket 412. Specifically, the motor controller 45 is located near the right lifting bracket 412 and away from the left lifting bracket 411, and the motor 44 is connected to the water pump 43 via a bearing body 495.

[0097] like Figure 15 and Figure 16 In form D shown, a single motor 44 drives a low-pressure water pump 43 via a drive shaft 491.

[0098] Compared to form C, the main changes are in the position of the motor 44, the transmission method, and the position of the motor controller 45. Specifically, the motor 44 is located on the right side of the right-side lifting bracket 412. More specifically, the motor controller 45 is closer to the left-side lifting bracket 411 and farther from the right-side lifting bracket 412, and the motor 44 is connected to the water pump 43 via the drive shaft 491.

[0099] The electric cleaning vehicle of this embodiment has at least the following advantages compared to the prior art:

[0100] 1. The water pump unit 40 is placed under the rear beam of the vehicle, which greatly increases the effective space of the water tank 30 above the rear beam of the front 11 and increases the effective length of the water tank 30.

[0101] 2. The overall vehicle structure has been significantly simplified:

[0102] 1) Compared to the traditional side-mounted battery chassis 10 pure electric cleaning truck, the water pump unit 40 cover of the traditional pure electric cleaning truck with transmission is eliminated; 2) Compared to the traditional rear-mounted power battery chassis 10, a set of water pump unit 40 brackets and side guardrails are eliminated, simplifying the overall vehicle structure. In summary, the curb weight and production cost are reduced; with the same wheelbase, the water tank 30 is larger in size and has a larger water capacity.

[0103] 3. In the industry, all new energy (pure electric) water trucks have the water level indicator pipe 31 located behind the water tank 30, which is not visible to the driver from the cab. This application places the water level indicator pipe 31 at the front of the water tank 30, which is a low-cost and extremely reliable liquid level display solution.

[0104] 4. The arrangement of the high and low pressure water pumps 43, motor controller 45, and motor 44 in this application fully considers maintainability, and the maintainability is better than the two traditional arrangement schemes.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electrically powered cleaning cart, characterized in that, The water tank (30) is installed on the chassis (10); The water pump unit (40) is installed below the tail of the chassis (10), and the water pump unit (40) is connected with the water tank (30) through a pipeline; The power battery assembly (50) is installed below the chassis (10), and the power battery assembly (50) is used for supplying power for the water pump unit (40). The water pump unit (40) comprises a lifting support, a bearing chassis (42), a water pump (43) and a motor (44); 2. The electrically powered cleaning cart of claim 1, wherein, The top of the lifting support is connected to the tail beam of the chassis (10); The bearing chassis (42) is connected to the bottom of the lifting support; The water pump (43) and the motor (44) are both installed on the bearing chassis (42); The power battery assembly (50) is used for supplying power for the motor (44). The lifting support comprises a left lifting support (411) and a right lifting support (412); 3. The electrically powered cleaning cart of claim 2, wherein, The top of the left lifting support (411) is connected to the left tail beam (22) of the chassis (10), and the top of the right lifting support (412) is connected to the right tail beam (23) of the chassis (10); The bottom of the left lifting support (411) and the bottom of the right lifting support (412) are both connected with the bearing chassis (42). The water pump unit (40) further comprises a water pump mounting support (46) and a motor mounting support (47); 4. The electrically powered cleaning cart of claim 3, wherein, The water pump (43) is installed on the bearing chassis (42) through the water pump mounting support (46); The motor (44) is installed on the bearing chassis (42) through the motor mounting support (47). The water pump (43) comprises a first water pump (431) and a second water pump (432); the first water pump (431) is located on the left side of the left lifting support (411); 5. The electrically powered cleaning cart of claim 3 or 4, wherein, The number of the motor (44) is one, the second water pump (432) is located between the left lifting support (411) and the right lifting support (412), and the first water pump (431) and the second water pump (432) are both drivingly connected to one motor (44); or, the number of the motor (44) is two, which are a first motor (441) and a second motor (442), the second water pump (432) is located on the right side of the right lifting support (412), the first water pump (431) is drivingly connected to the first motor (441), and the second water pump (432) is drivingly connected to the second motor (442). ​ 6. The electrically powered cleaning cart of claim 5, wherein, In the case where the number of the electric machines (44) is one, the second water pump (432) is located close to the right-side hoisting support (412) and away from the left-side hoisting support (411), and the electric machine (44) is located to the right of the right-side hoisting support (412), and the electric machine (44) is connected with the transfer case (494) through a first transmission shaft (492), the transfer case (494) is connected with the first water pump (431), and the transfer case (494) is connected with the second water pump (432) through a second transmission shaft (493); In the case where the number of the electric machines (44) is two, the second water pump (432) is located to the right of the right-side hoisting support (412), and the first electric machine (441) and the second electric machine (442) are both located close to the left-side hoisting support (411) and away from the right-side hoisting support (412), the first electric machine (441) is connected with the first water pump (431) through a bearing body (495), and the second electric machine (442) is connected with the second water pump (432) through a transmission shaft (491).

7. The electrically powered cleaning cart of claim 5, wherein, The electrically-driven cleaning vehicle further comprises a rear work platform (12), and the rear work platform (12) is located at the rear side of the water tank (30); A lifting point (433) is arranged on the top surface of the second water pump (432), and the vertical projection of the lifting point (433) on the ground is located between the vertical projections of the water tank (30) and the rear work platform (12) on the ground.

8. The electrically powered cleaning cart of claim 3 or 4, wherein, The number of the water pumps (43) and the number of the electric machines (44) are both one; The water pump (43) is located to the left of the left-side hoisting support (411); The electric machine (44) is located between the left-side hoisting support (411) and the right-side hoisting support (412), or the electric machine (44) is located to the right of the right-side hoisting support (412).

9. The electrically powered cleaning cart of claim 8, wherein, In the case where the electric machine (44) is located between the left-side hoisting support (411) and the right-side hoisting support (412), the electric machine (44) is connected with the water pump (43) through a bearing body (495); In the case where the electric machine (44) is located to the right of the right-side hoisting support (412), the electric machine (44) is connected with the water pump (43) through a transmission shaft (491).

10. The electrically powered cleaning cart of claim 2, wherein, The water pump unit (40) further comprises an electric machine controller (45), and the electric machine controller (45) is installed on the load-carrying chassis (42).

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