A pure electric electric wheel self-unloading vehicle ventilation system

Abstract

The utility model discloses a pure electric electric wheel dump truck ventilation system belongs to dump truck ventilation technical field, including ventilator body, ventilator body sets up on the underframe, and the upper portion one side of ventilator body is provided with the air intake subassembly, and the side away from the air intake subassembly of ventilator body is provided with the air outlet subassembly, and ventilator body and air intake, air outlet subassembly form the efficient air duct through the reasonable arrangement, make air can stably from the outside introduction, after the pressurization of fan, directional delivery to the drive motor heat dissipation cavity in rear axle housing, effectively reduced the phenomenon of the insufficient air volume of fan passive rotation with diesel engine speed in traditional system, realize drive motor under various working conditions sustained heat dissipation, improve motor operation stability.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation technology for dump trucks, specifically a ventilation system for a pure electric wheel dump truck. Background Technology

[0002] Electric wheel dump trucks typically use electric wheels composed of a drive motor and a wheel-side reducer. During vehicle operation, the drive motor converts electrical energy into mechanical energy to drive the wheels, but this process generates a significant amount of heat, especially under high load or long-term operating conditions. Heat accumulation can lead to a significant temperature rise in the motor. If this heat cannot be dissipated in time, it will affect the insulation performance of the motor windings, the working condition of the magnets, and the lifespan of the bearings, and may even trigger the temperature protection mechanism, reducing output power or interrupting operation. Therefore, to ensure reliable operation of the drive motor, extend its service life, and ensure normal vehicle operation, an efficient ventilation and cooling system must be installed to provide the drive motor with a continuous and stable flow of cooling air during operation, effectively removing heat.

[0003] However, most existing traditional electric wheel dump trucks use diesel engines as their power source. The fan connection plate of their ventilation system is coaxially mounted with the main generator, which in turn is rigidly coaxially connected to the diesel engine crankshaft. When the diesel engine is running, the fan can only passively rotate and generate air pressure in accordance with the engine speed. Therefore, the airflow velocity within the ventilation duct is entirely limited by the diesel engine speed. Under low engine speed or idling conditions, the fan speed decreases, resulting in insufficient air pressure and low airflow, making it difficult to deliver enough cooling air to the drive motor in the rear axle housing in a timely manner. This situation easily leads to insufficient heat dissipation and excessive temperature rise in the drive motor, which may not only trigger overheat protection and reduce output performance but also affect the overall vehicle's driving stability and reliability. Utility Model Content

[0004] The purpose of this utility model is to provide a ventilation system for a pure electric wheel dump truck, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0005] A ventilation system for a pure electric wheel dump truck is provided, including a ventilation fan body, which is mounted on a chassis. An air inlet component is provided on one side of the upper part of the ventilation fan body, and an air outlet component is provided on the side of the ventilation fan body away from the air inlet component.

[0006] Furthermore, the air intake assembly includes an air duct, the air duct being connected to an air inlet of the ventilator body, and a second air intake pipe being provided on one side of the upper part of the air duct, the second air intake pipe being connected to a first air intake pipe.

[0007] Furthermore, a crossbeam is provided above the air duct, and the second air inlet duct is connected to the crossbeam by several first shock-absorbing pads.

[0008] Furthermore, a second shock-absorbing pad is installed on the first air inlet pipe.

[0009] Furthermore, several third shock-absorbing pads are provided below the base frame.

[0010] Furthermore, the air outlet assembly includes a first air outlet pipe, which has an air outlet at the location of the ventilator body, and a second air outlet pipe is connected to the first air outlet pipe.

[0011] Furthermore, the fan body is detachably connected to the base frame by bolts.

[0012] Furthermore, the first air inlet pipe and the second air outlet pipe are retractable ventilation pipes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The fan body is independently mounted on the base frame, with air inlet and outlet components arranged on its upper sides. Under electronic control, the fan body can independently adjust its speed according to the actual heat dissipation needs of the drive motor, actively generating stable air pressure and sufficient air volume, no longer limited by the diesel engine speed. The outlet component directionally delivers pressurized cooling air to the drive motor heat dissipation channel in the rear axle housing, ensuring reliable forced ventilation cooling for the motor under any operating condition. This structure reduces the problem of drive motor overheating caused by insufficient fan speed and insufficient heat dissipation due to low or idling diesel engine operation in traditional systems. Moreover, it achieves controllable ventilation volume and stable heat dissipation output, ensuring controlled temperature rise and stable operation of the drive motor under various complex operating conditions, realizing continuous heat dissipation of the drive motor under various operating conditions, and improving the motor's operational stability. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This utility model provides an overall structural schematic diagram of a ventilation system for a pure electric wheel dump truck.

[0016] In the diagram: 1. Fan body; 11. Base frame; 2. Air inlet assembly; 21. First air inlet pipe; 22. Second air inlet pipe; 23. Air guide pipe; 3. Air outlet assembly; 31. First air outlet pipe; 32. Second air outlet pipe; 4. Crossbeam; 5. First shock absorber; 6. Second shock absorber; 7. Third shock absorber. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Please see Figure 1As shown in the embodiment of this utility model, a ventilation system for a pure electric wheel dump truck includes a ventilation fan body 1, which is mounted on a base frame 11. An air inlet assembly 2 is provided on one side of the upper part of the ventilation fan body 1, and an air outlet assembly 3 is provided on the side of the ventilation fan body 1 away from the air inlet assembly 2. The ventilation fan body 1 is powered by a power battery. The speed of the impeller in the ventilation fan can be independently controlled, that is, the fan no longer relies on the speed of the diesel engine to rotate passively. It is independently powered by the power battery. The fan impeller can adjust its speed in real time according to the actual heat dissipation requirements of the drive motor to achieve controllable output of air volume and air pressure. This application constructs an active ventilation system independent of the traditional diesel engine speed by independently mounting a fan body 1 on the underframe 11, and arranging an air intake assembly 2 and an air outlet assembly 3 on its upper two sides respectively. The air intake assembly 2 is used to independently introduce outside air and rectify the airflow, allowing fresh air to stably enter the fan body 1. Under electronic control, the fan body 1 can independently adjust its speed according to the actual heat dissipation requirements of the drive motor, actively generating stable air pressure and sufficient air volume, no longer limited by the diesel engine speed. The independent motor outputs stable air volume. Since diesel cooling relies on engine speed, insufficient cooling may occur under certain operating conditions. The air outlet assembly 3 directionally delivers pressurized cooling air to the drive motor cooling channel in the rear axle housing, ensuring reliable forced ventilation cooling of the motor under any operating condition. Through the above structure, the problem of drive motor overheating caused by insufficient fan speed and insufficient heat dissipation due to low-speed or idling operation of the diesel engine in traditional systems is reduced. Moreover, controllable ventilation volume and stable heat dissipation output are achieved, ensuring controlled temperature rise and stable operation of the drive motor under various complex operating conditions, thereby effectively improving the reliability and continuous working capability of the entire vehicle.

[0024] In one embodiment, see Figure 1 As shown, the air intake assembly 2 includes an air guide duct 23, which is connected to the air inlet of the fan body 1. A second air inlet duct 22 is provided on one side of the upper part of the air guide duct 23, and a first air inlet duct 21 is connected to the second air inlet duct 22. The air intake assembly 2 consists of three channels: the air guide duct 23, the second air inlet duct 22, and the first air inlet duct 21, forming a multi-path parallel or converging air introduction structure. The air guide duct 23 is the main air intake channel, which is directly connected to the air inlet of the fan body 1 and is the main path for air to enter the fan. The second air inlet duct 22 is arranged on the upper side of the air guide duct 23 and can supplement the air guide duct 23 with air. The first air inlet duct 21 is further connected to the second air inlet duct 22, introducing more outside air through a higher position or a wider air intake surface.

[0025] In one embodiment, see Figure 1 As shown, a crossbeam 4 is also provided above the air duct 23, and the second air inlet duct 22 is connected to the crossbeam 4 by several first shock-absorbing pads 5; The second air intake duct 22 is bolted to the crossbeam 4 via the first shock absorber 5. The first shock absorber 5 is arranged in a multi-point distribution to ensure that the air intake duct is subjected to uniform force and has higher stability. The crossbeam 4 can be a welded beam or an integral structural component of the vehicle frame, with mounting holes or welded brackets for arranging the first shock absorber 5. Through the above structure, the second air intake duct 22 is guaranteed to have sufficient rigid support, and vibration isolation and buffering are achieved, so that the air intake channel can remain unobstructed and reliable under the complex working conditions of the vehicle, thereby ensuring that the ventilator continuously obtains a stable air source.

[0026] In one embodiment, see Figure 1 As shown, a second shock-absorbing pad 6 is provided on the first air inlet pipe 21. The first air inlet pipe 21 is installed on the frame of the dump truck through the second shock-absorbing pad 6. This structure achieves support, buffering and vibration isolation fixation of the first air inlet pipe 21, so that the first air inlet pipe 21 maintains a relatively stable position under complex working conditions, reduces air supply fluctuations or air duct damage caused by vibration, and ensures the long-term stable operation of the ventilation system.

[0027] In one embodiment, see Figure 1 As shown, several third shock-absorbing pads 7 are provided under the base frame 11. The base frame 11 is fixed to the third shock-absorbing pads 7 by bolts, and the third shock-absorbing pads 7 are connected to the frame of the dump truck to form a shock-absorbing installation system. Through the above structure, the ventilation fan body 1 can maintain stable operation under various vibration conditions of the vehicle, effectively improving the durability and safety of the ventilation system.

[0028] In one embodiment, see Figure 1 As shown, the air outlet assembly 3 includes a first air outlet duct 31, which is installed at the air outlet of the fan body 1 to directly receive the high-velocity cooling air compressed by the fan. The side and end of the first air outlet duct 31 are connected to a second air outlet duct 32, so that the air, after being pressurized by the fan, can be smoothly transported to the rear axle housing or the heat dissipation cavity of the drive motor through a multi-stage air outlet channel. Through the series connection structure of the first air outlet duct 31 and the second air outlet duct 32, the air at the fan outlet can be guided, diverted, and stably transported, reducing air pressure loss, making the airflow more uniform, and ensuring that the cooling airflow can stably reach the motor heat dissipation position under different vehicle postures and vibration conditions.

[0029] In one embodiment, see Figure 1 As shown, the fan body 1 is detachably connected to the base frame 11 by bolts, which facilitates the disassembly and replacement of the fan body 1 during structural installation and subsequent maintenance.

[0030] In one specific embodiment, please refer to Figure 1As shown, the first air inlet pipe 21 and the second air outlet pipe 32 are retractable ventilation pipes. Both the first air inlet pipe 21 and the second air outlet pipe 32 adopt a retractable ventilation pipe structure. Their main function is to adapt to changes in chassis posture, vibration, and structural space during vehicle operation, while also facilitating vehicle assembly and maintenance. The retractable ventilation pipes, through their telescopic joint design, allow the pipe length to be adjusted within a certain range. This ensures the relative positional matching of the air inlet and outlet pipes with the ventilation fan body 1, the base frame 11, and the drive motor cooling cavity, guaranteeing the continuity and sealing of the air passage. This prevents pipe detachment, cracking, or air leakage due to vehicle vibration or thermal expansion and contraction, thus improving the adaptability of the ventilation system.

[0031] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A ventilation system for a pure electric wheel dump truck, comprising a ventilation fan body (1), characterized in that, The ventilator body (1) is mounted on the base frame (11). An air inlet assembly (2) is provided on one side of the upper part of the ventilator body (1), and an air outlet assembly (3) is provided on the side of the ventilator body (1) away from the air inlet assembly (2).

2. The ventilation system for a pure electric wheel dump truck according to claim 1, characterized in that, The air intake assembly (2) includes an air duct (23), the air duct (23) is connected to the air inlet of the fan body (1), and a second air intake pipe (22) is provided on one side of the upper part of the air duct (23), and a first air intake pipe (21) is connected to the second air intake pipe (22).

3. The ventilation system for a pure electric wheel dump truck according to claim 2, characterized in that, A crossbeam (4) is also provided above the air duct (23), and the second air inlet pipe (22) is connected to the crossbeam (4) by a number of first shock-absorbing pads (5).

4. The ventilation system for a pure electric wheel dump truck according to claim 2, characterized in that, A second shock-absorbing pad (6) is provided on the first air inlet pipe (21).

5. The ventilation system for a pure electric wheel dump truck according to claim 4, characterized in that, Several third shock-absorbing pads (7) are provided under the base frame (11).

6. The ventilation system for a pure electric wheel dump truck according to claim 2, characterized in that, The air outlet assembly (3) includes a first air outlet pipe (31), the first air outlet pipe (31) is provided with the air outlet of the fan body (1), and a second air outlet pipe (32) is connected to the first air outlet pipe (31).

7. The ventilation system for a pure electric wheel dump truck according to claim 4, characterized in that, The fan body (1) is detachably connected to the base frame (11) by bolts.

8. A ventilation system for a pure electric wheel dump truck according to claim 6, characterized in that, The first air inlet pipe (21) and the second air outlet pipe (32) are retractable ventilation pipes.

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