Dump truck ventilation system and electric drive dump truck

Abstract

This utility model discloses a ventilation system for a dump truck and an electric drive dump truck. The ventilation system includes a front duct, a generator, a blower, a dust collection device, and a rear duct. The outlet of the front duct is connected to the generator, and the generator is connected to the inlet of the blower. The dust collection device is located at the bottom of the blower and is connected to it. The outlet of the blower is connected to the rear duct. The airflow direction is from the front duct to the generator, and then through the blower into the rear duct. By setting up the dust collection device, it is easy for personnel to regularly clean the dust and any metal particles in the duct, thus maintaining a good ventilation environment and indirectly extending the service life of the wheel-side motor. It can also reduce the accumulation of particulate matter and the increase in duct resistance coefficient during long-term operation in harsh environments, thereby optimizing the heat dissipation function of the ventilation system.

Description

Technical Field

[0001] This utility model relates to the field of dump truck technology, and in particular to a dump truck ventilation system and an electric drive dump truck. Background Technology

[0002] Dump trucks are vehicles that unload goods themselves using hydraulic or mechanical lifting; they are also known as tipper trucks. They consist of a truck chassis, a hydraulic lifting mechanism, a cargo box, and a power take-off (PTO). Dump truck cargo boxes are available in two types: rear-tipping and side-tipping. The movement of a piston rod is controlled by a control system; rear-tipping is more common, as it tilts the cargo box by pushing the piston rod. In civil engineering, dump trucks are frequently used in conjunction with excavators, loaders, belt conveyors, and other construction machinery to form loading, transport, and unloading production lines for earthwork, sand, gravel, and bulk materials.

[0003] With the increasing demand for green, intelligent, and large-scale mining, electric drive dump trucks are playing an increasingly important role in mining equipment. The electrical system is the core component of an electric drive dump truck, mainly composed of a generator, converter cabinet, and wheel-side motors. The engine drives the generator, which in turn supplies power to the wheel-side motors, providing the dump truck with powerful performance. The ventilation system is designed to meet the heat dissipation needs of all components. The entire ventilation system generally consists of a converter cabinet, generator, wheel-side motors, rear axle housing, and air ducts. During operation, the fan draws outside air into the generator, delivers it through the air ducts to the wheel-side motors, and finally blows it out from the rear axle housing.

[0004] Currently, ventilation systems mainly come in two forms. One type involves a fan drawing in outside air, delivering it to the generator for cooling, and then to the wheel-side motor for further cooling. The other type uses two separate ducts: one duct delivers air to the generator for cooling before dissipating it, while the other fan draws in outside air directly to the wheel-side motor for cooling. Both of these duct types can generally meet the system's heat dissipation requirements. However, due to the harsh environment, complex road conditions, and bumpy roads in mining areas, long-term exposure to large amounts of dust entering the ducts can lead to particulate matter accumulation, increasing the duct resistance coefficient. In particular, conductive metal dust entering the wheel-side motors can affect their lifespan. Furthermore, the generally harsh and remote location of mines makes maintenance and after-sales service difficult. Therefore, optimizing the design of the duct system, a crucial heat dissipation system for electric drive dump truck motors, to better meet heat dissipation needs is of paramount importance. Utility Model Content

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a ventilation system for dump trucks and an electric drive dump truck, so as to solve the problem that dust removal is relatively troublesome in the existing dump truck ventilation system.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] This utility model provides a ventilation system for a dump truck, including a front air duct, a generator, a blower, a dust collection device, and a rear air duct. The air outlet of the front air duct is connected to the generator, the generator is connected to the air inlet of the blower, the dust collection device is located at the bottom of the blower and communicates with the blower, and the air outlet of the blower is connected to the rear air duct.

[0008] The airflow direction is from the front air duct to the generator, and then through the blower into the rear air duct.

[0009] Furthermore, the dump truck ventilation system includes an upper air duct, the air outlet of which is connected to the blower;

[0010] The upper air duct is equipped with a second dust removal device, which is used to remove dust from the inner wall of the upper air duct.

[0011] This utility model also provides a ventilation system for a dump truck, including a front air duct, a generator, a blower, a dust collection device, a rear air duct, and an upper air duct. The air outlet of the front air duct is connected to the generator, and the generator and the blower are spaced apart from each other. An impeller is provided inside the generator. The dust collection device is located at the bottom of the blower and is connected to the blower. The air outlet of the blower is connected to the rear air duct.

[0012] One airflow direction is from the front air duct to the generator and out of the generator, while the other airflow direction is from the upper air duct through the blower into the rear air duct.

[0013] Furthermore, a second dust removal device is provided on the upper air duct, which is used to remove dust from the inner wall of the upper air duct.

[0014] Furthermore, the dust collection device includes a dust collection box, a dust collection hopper, and a bottom cover plate. The dust collection hopper is located at the top of the dust collection box and connected to the blower. The bottom cover plate is located at the bottom of the dust collection box and is movably connected to the dust collection box to open or cover the bottom of the dust collection box.

[0015] Furthermore, the dust collection device includes a magnetic suction element, which is disposed on the side wall of the dust collection box and is used to attract ferromagnetic dust.

[0016] And / or, the dust collection device includes an electrostatic dust collection device, which is disposed on the inner wall of the dust collection box and / or the dust collection hopper.

[0017] Furthermore, a monitoring panel is provided on the side wall of the dust collection box, which is used to monitor the amount of dust in the dust collection box.

[0018] Furthermore, the dust collection device is provided with an exhaust port, which is located between the bottom cover plate and the dust collection box.

[0019] Furthermore, a first dust removal device is provided on the front air duct, which is used to remove dust from the inner wall of the front air duct.

[0020] And / or, the dump truck ventilation system includes a converter cabinet, which is connected to the air inlet of the front air duct.

[0021] This application also provides an electric drive dump truck, including the dump truck ventilation system described above.

[0022] The beneficial effects of this utility model are as follows: by setting up a dust collection device, it is convenient for manual cleaning of dust and possible metal particles in the air ducts on a regular basis, which helps to maintain a good ventilation environment and indirectly maintain the service life of the wheel-side motor; it can also reduce the accumulation of particulate matter and increase the air duct resistance coefficient when the ventilation system is running for a long time in harsh environments, and optimize the heat dissipation function of the ventilation system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the ventilation system of the dump truck in Embodiment 1 of this utility model.

[0024] Figure 2 This is a schematic diagram of the dust collection device in Embodiment 1 of this utility model.

[0025] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0026] Figure 4 This is a schematic diagram of the dust collection hopper in Embodiment 1 of this utility model.

[0027] In the diagram: front air duct 10, generator 20, blower 30, dust collection device 40, exhaust port 401, dust collection box 41, monitoring board 411, dust collection hopper 42, bottom cover plate 43, pin 431, bolt 432, magnetic suction component 44, electrostatic dust collection device 45, rear air duct 50, inverter cabinet 60, air suction nozzle 61, upper air duct 70. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation methods, structure, features, and effects of the dump truck ventilation system and electric drive dump truck proposed according to this utility model:

[0029] [Example 1]

[0030] Figure 1 This is a schematic diagram of the ventilation system of the dump truck in Embodiment 1 of this utility model. Figure 2 This is a schematic diagram of the dust collection device in Embodiment 1 of this utility model. Figure 3 yes Figure 2 Enlarged diagram of point A in the middle. Figure 4 This is a schematic diagram of the dust collection hopper in Embodiment 1 of this utility model.

[0031] like Figures 1 to 4 As shown, the first embodiment of this utility model provides a ventilation system for a dump truck, including a front air duct 10, a generator 20, a blower 30, a dust collection device 40, and a rear air duct 50. The air outlet of the front air duct 10 is connected to the generator 20, the generator 20 is connected to the air inlet of the blower 30, the dust collection device 40 is located at the bottom of the blower 30 and is connected to the blower 30, and the dust collection device 40 is used to collect dust. The air outlet of the blower 30 is connected to the rear air duct 50.

[0032] The airflow direction is from the front air duct 10 to the generator 20, and then through the blower 30 into the rear air duct 50.

[0033] This invention provides a dust collection device 40 at the bottom of the blower 30, which allows for regular manual cleaning of dust and any metal particles in the duct, thus maintaining good ventilation and indirectly extending the lifespan of the motor. It also reduces the accumulation of particulate matter and the increase in duct resistance coefficient during long-term operation of the ventilation system in harsh environments, thereby optimizing the heat dissipation function of the ventilation system.

[0034] In this embodiment, as Figures 2 to 4As shown, the dust collection device 40 includes a dust collection box 41, a dust collection hopper 42, and a bottom cover plate 43. The dust collection hopper 42 is located at the top of the dust collection box 41 and connected to the blower 30. The bottom cover plate 43 is located at the bottom of the dust collection box 41 and is movably connected to the dust collection box 41 to open or cover the bottom of the dust collection box 41. The dust collection box 41 has a tubular structure, forming a barrel-shaped structure with the bottom cover plate 43. The dust collection hopper 42 has a wedge-shaped structure, with the larger opening facing the blower 30 and the smaller opening facing the dust collection box 41, to facilitate dust collection and prevent dust backflow. The top edge of the dust collection hopper 42 has an arc-shaped structure, matching the shape of the blower 30 for better connection between the dust collection hopper 42 and the blower 30. The shaft of the blower 30 is horizontal, and the dust collection device 40 is located at the bottom of the side wall of the blower 30. Firstly, the centrifugal force of the blower 30 can throw the dust into the dust collection device 40, and secondly, the dust can fall into the dust collection device 40 by gravity, so as to better collect the dust.

[0035] Optionally, one end of the bottom cover plate 43 is rotatably connected to the dust collection box 41 via a pin 431, and the other end of the bottom cover plate 43 is fixed to the dust collection box 41 via bolts 432. When the bottom cover plate 43 needs to be opened, simply remove the bolts 432, and the bottom cover plate 43 can rotate at the bottom of the dust collection box 41 via the pin 431 to open the bottom of the dust collection box 41, allowing the dust inside the dust collection box 41 to fall out. When the bottom cover plate 43 needs to be closed, simply rotate the bottom cover plate 43 to cover the bottom of the dust collection box 41, and then fix it to the dust collection box 41 via bolts 432. Of course, in other embodiments, the bottom cover plate 43 can also be slidably connected to the dust collection box 41, opening or covering the bottom of the dust collection box 41 by sliding; or, the bottom cover plate 43 can be detachably connected to the dust collection box 41, opening or covering the bottom of the dust collection box 41 by removing or installing the bottom cover plate 43.

[0036] Furthermore, the dust collection device 40 includes a magnetic suction element 44, which is disposed on the side wall of the dust collection box 41. The magnetic suction element 44 is used to attract ferromagnetic dust. The magnetic suction element 44 is, for example, a magnet or an electromagnet, thereby attracting metal particles that enter or are worn into the air duct to a certain extent, preventing them from entering critical components such as the wheel-side motor, and thus extending the service life of the wheel-side motor to some extent. Preferably, the magnetic suction element 44 is an electromagnet, so that the strength of its magnetism can be controlled by a circuit. When the bottom cover 43 is opened for dust cleaning, the electromagnet can be turned off to facilitate the cleaning of the ferromagnetic dust attracted by the magnetic suction element 44.

[0037] Optionally, the magnetic suction element 44 is disposed on the outer wall of the dust collection box 41, which, while providing magnetic suction, also facilitates cleaning of dust on the inner wall of the dust collection box 41.

[0038] Furthermore, a monitoring plate 411 is provided on the side wall of the dust collection box 41. The monitoring plate 411 is used to monitor the amount of dust in the dust collection box 41. In this embodiment, the monitoring plate 411 is made of transparent material (e.g., glass or acrylic). The monitoring plate 411 is fixed to the middle of the side wall of the dust collection box 41 and extends in the vertical direction. The amount of dust in the dust collection box 41 can be clearly seen through the transparent monitoring plate 411, so as to facilitate timely manual cleaning. Except for the monitoring plate 411, which is made of transparent material, the dust collection device 40 is made of metal. Of course, in other embodiments, the monitoring plate 411 can also be a dust height sensor to monitor the amount of dust in the dust collection box 41 in real time. For example, a distance sensor can be used. The distance sensor is installed in the top area of ​​the dust collection box 41. By detecting the distance between the dust and the distance sensor, the amount of dust in the dust collection box 41 can be calculated.

[0039] Furthermore, the dust collection device 40 is provided with an exhaust port 401, which is located between the bottom cover plate 43 and the dust collection box 41, so as to blow the dust from the air duct into the dust collection device 40 and also blow some of the dust out from the exhaust port 401.

[0040] In one embodiment, the dust collection device 40 includes an electrostatic dust collection device 45, which is disposed on the inner wall of the dust collection box 41 and / or the dust collection hopper 42. Optionally, the electrostatic dust collection device 45 is disposed on the inner wall of the dust collection hopper 42 to be closer to the blower 30, facilitating the intake of more dust into the dust collection device 40. When the machine is stopped or when the dust in the dust collection device 40 needs to be cleaned, the electrostatic dust collection device 45 can be de-energized or a reverse polarity current can be applied to facilitate the shedding of dust.

[0041] In this embodiment, a first dust removal device is provided on the front air duct 10, which is used to remove dust from the inner wall of the front air duct 10. The first dust removal device can be an electrostatic dust removal device or a vibration dust removal device. The electrostatic dust removal device releases charges with opposite polarity to the dust, causing the dust on the inner wall of the front air duct 10 to detach; or, the vibration dust removal device drives the air duct of the front air duct 10 to vibrate at high frequency, causing the dust on the inner wall of the front air duct 10 to detach.

[0042] In this embodiment, the dump truck ventilation system includes a converter cabinet 60, which is connected to the air inlet of the front air duct 10. The top of the converter cabinet 60 is equipped with an air intake nozzle 61 to facilitate airflow into the converter cabinet 60. An installation interface is provided between the front air duct 10 and the converter cabinet 60, and they are fixed together with bolts. The airflow direction is from the converter cabinet 60 through the front air duct 10 to the generator 20, and then through the blower 30 into the rear air duct 50.

[0043] Optionally, the dump truck ventilation system also includes an upper air duct 70, the air outlet of which is connected to the blower 30, thus forming a two-way air intake ventilation system to increase the air intake volume. The air inlet of the upper air duct 70 is mounted above the inverter cabinet 60 via a bracket, and the airflow direction is from the upper air duct 70 to the blower 30 and then into the rear air duct 50. Of course, in other embodiments, the upper air duct 70 may not be provided, thus forming a single-duct ventilation system for the dump truck.

[0044] Furthermore, a second dust removal device is provided on the upper air duct 70 to remove dust from the inner wall of the upper air duct 70. This second dust removal device can be an electrostatic dust removal device or a vibration dust removal device. The electrostatic dust removal device releases an antipolar charge relative to the dust, causing the dust to detach from the inner wall of the upper air duct 70; alternatively, the vibration dust removal device drives high-frequency vibration of the upper air duct 70, causing the dust to detach from the inner wall of the upper air duct 70.

[0045] The dump truck ventilation system in this application is a dual-intake ventilation system, drawing in cold air from the upper air duct 70 and the front air duct 10 respectively. For the first air duct, the front air duct 10 draws in cold air from the converter cabinet 60 and cools the converter cabinet 60; secondly, it delivers the drawn-in cold air to the generator 20 and cools the generator 20. For the second air duct, the upper air duct 70 is directly connected to the blower 30. Since the blower 30 is connected to the motor 20, the upper air duct 70 can also provide some cooling for the motor 20. The cold air drawn in from both the upper air duct 70 and the front air duct 10 passes through the blower 30 and is finally delivered to the rear axle housing via the rear air duct 50, cooling the wheel-side motors before being discharged. When the cold air from the upper air duct 70 and the front air duct 10 reaches the blower 30, larger dust particles or metal particles will fall into the dust collection device 40 below the blower 30. When the vehicle stops, particles in the upper air duct 70 and the front air duct 10 will fall into the dust collection device 40 due to gravity or the action of the first and second dust removal devices. After the dust is full, the dust collection device 40 can be manually opened for cleaning.

[0046] [Example 2]

[0047] The dump truck ventilation system provided in Embodiment 2 of the present invention is the same as that in Embodiment 1. Figures 1 to 4 The ventilation systems of dump trucks are basically the same, with the following differences:

[0048] In this embodiment, the dump truck ventilation system includes a front duct 10, a generator 20, a blower 30, a dust collection device 40, a rear duct 50, and an upper duct 70. The air outlet of the front duct 10 is connected to the generator 20, and the generator 20 and the blower 30 are spaced apart from each other. An impeller is installed inside the generator 20. The dust collection device 40 is located at the bottom of the blower 30 and communicates with the blower 30. The air outlet of the blower 30 is connected to the rear duct 50. One airflow direction is from the front duct 10 to the generator 20 and out of the generator 20, while the other airflow direction is from the upper duct 70 through the blower 30 into the rear duct 50. That is, the front duct 10 draws in air through the impeller built into the generator 20, while the upper duct 70 draws in air through the blower 30.

[0049] Compared to Embodiment 1, in this embodiment, the two ventilation systems of the dump truck's ventilation system are independent of each other. For the first air duct, one is that the front air duct 10 draws in cold air from the inverter cabinet 60 and dissipates heat from the inverter cabinet 60; the other is that it sends the drawn-in cold air to the generator 20 and dissipates heat from the generator 20, and then blows it out from the generator 20, without passing through the blower 30, the rear air duct 50, or the wheel-side motor. For the second air duct, the upper air duct 70 is connected to the blower 30. The cold air drawn in by the upper air duct 70 passes through the blower 30, and finally passes through the rear air duct 50 to deliver the rear axle housing and dissipates heat from the wheel-side motor before being discharged.

[0050] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0051] This application also provides an electric drive dump truck, including the dump truck ventilation system described above.

[0052] In this document, the directional terms such as up, down, left, right, front, and back are defined according to the position of the structures in the accompanying drawings and the relative positions of the structures, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second," etc., used herein are only used for distinction in name and are not used to limit the number or order.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present utility model. These are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A ventilation system for a dump truck, characterized in that, It includes a front air duct (10), a generator (20), a blower (30), a dust collection device (40), and a rear air duct (50). The air outlet of the front air duct (10) is connected to the generator (20), the generator (20) is connected to the air inlet of the blower (30), the dust collection device (40) is located at the bottom of the blower (30) and communicates with the blower (30), and the air outlet of the blower (30) is connected to the rear air duct (50). The airflow direction is from the front air duct (10) to the generator (20), and then through the blower (30) into the rear air duct (50).

2. The dump truck ventilation system according to claim 1, characterized in that, The dump truck ventilation system includes an upper air duct (70), the air outlet of which is connected to the blower (30); The upper air duct (70) is provided with a second dust removal device, which is used to remove dust from the inner wall of the upper air duct (70).

3. A ventilation system for a dump truck, characterized in that, It includes a front air duct (10), a generator (20), a blower (30), a dust collection device (40), a rear air duct (50), and an upper air duct (70). The air outlet of the front air duct (10) is connected to the generator (20). The generator (20) and the blower (30) are spaced apart from each other. The generator (20) is equipped with an impeller. The dust collection device (40) is located at the bottom of the blower (30) and is connected to the blower (30). The air outlet of the blower (30) is connected to the rear air duct (50). One airflow direction is from the front air duct (10) to the generator (20) and blown out from the generator (20), while the other airflow direction is from the upper air duct (70) through the blower (30) into the rear air duct (50).

4. The dump truck ventilation system according to claim 3, characterized in that, The upper air duct (70) is provided with a second dust removal device, which is used to remove dust from the inner wall of the upper air duct (70).

5. The dump truck ventilation system according to claim 1 or 3, characterized in that, The dust collection device (40) includes a dust collection box (41), a dust collection hopper (42), and a bottom cover plate (43). The dust collection hopper (42) is located on the top of the dust collection box (41) and connected to the blower (30). The bottom cover plate (43) is located at the bottom of the dust collection box (41) and is movably connected to the dust collection box (41) to open or cover the bottom of the dust collection box (41).

6. The dump truck ventilation system according to claim 5, characterized in that, The dust collection device (40) includes a magnetic suction element (44), which is disposed on the side wall of the dust collection box (41) and is used to attract ferromagnetic dust. And / or, the dust collection device (40) includes an electrostatic dust collection device (45) disposed on the inner wall of the dust collection box (41) and / or the dust collection hopper (42).

7. The dump truck ventilation system according to claim 5, characterized in that, The dust collection box (41) is provided with a monitoring plate (411) on its side wall, which is used to monitor the amount of dust in the dust collection box (41).

8. The dump truck ventilation system according to claim 5, characterized in that, The dust collection device (40) is provided with an exhaust port (401), which is located between the bottom cover plate (43) and the dust collection box (41).

9. The dump truck ventilation system according to claim 1 or 3, characterized in that, The front air duct (10) is provided with a first dust removal device, which is used to remove dust from the inner wall of the front air duct (10); And / or, the dump truck ventilation system includes a converter cabinet (60) connected to the air inlet of the front air duct (10).

10. An electric drive dump truck, characterized in that, Includes the dump truck ventilation system as described in any one of claims 1-9.

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