Cab micro-boost system and engineering vehicle

Abstract

The utility model relates to vehicle technical field, specifically disclose cab micro -supercharging system and engineering vehicle, this cab micro -supercharging system includes fan and filter equipment, fan is fixed in the outer wall of cab, and the air outlet of fan is communicated with the air inlet of cab, filter equipment includes air filter and connecting pipe, air filter sets up outside cab, and the air outlet of air filter is communicated with the air inlet of fan through connecting pipe. Fan and air filter are connected through connecting pipe to make fan and air filter set up independently respectively, when the air inlet position of cab cannot accommodate fan and air filter simultaneously, only need to set up fan in the air inlet position of cab, air filter can set up other can accommodate installation position, at this moment only need to connect through connecting pipe. The cab micro -supercharging system solves the cab micro -supercharging system difficult to adapt to the complex space layout of engineering machinery car outside, and installation is more flexible.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a cab micro-pressurization system and engineering vehicles. Background Technology

[0002] With the expansion of my country's infrastructure construction and the increasing complexity of the application environment for engineering machinery, the demand for performance optimization of cab micro-boost systems, as a key technology for improving the driving and riding environment, is becoming increasingly prominent.

[0003] Existing micro-boost systems generally adopt a compact design that integrates the air purification device and the fan into a single housing. Outside air is filtered by a filter and then pressurized by the fan before being delivered into the cab, creating a positive pressure environment to adapt to thin air conditions such as tunnels and high altitudes, or to prevent the intrusion of external dust. However, this integrated structure has significant technical drawbacks: current mainstream micro-boost systems typically use an external mounting method; however, the integrated housing structure is bulky and difficult to adapt to the complex spatial layout of construction machinery (such as avoiding hydraulic lines, engine compartments, or auxiliary equipment). Especially on compact equipment (such as wheel loaders and small road rollers), it is prone to interference with surrounding components, resulting in limited installation space or even requiring additional modifications to the vehicle body structure.

[0004] Therefore, a cab micro-pressurization system is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a cab micro-boosting system and an engineering vehicle to solve the problem that the integrated shell structure of the cab micro-boosting system is bulky and difficult to adapt to the complex spatial layout of the engineering machinery vehicle, resulting in limited installation location and even the need for additional modification of the vehicle body structure.

[0006] This utility model provides a cab micro-pressurization system, which includes:

[0007] A fan is configured to be fixed to the outer wall of the cab, and the air outlet of the fan is connected to the air inlet of the cab.

[0008] The filtration device includes an air filter and a connecting pipe. The air filter is located outside the driver's cab, and the air outlet of the air filter is connected to the air inlet of the fan through the connecting pipe.

[0009] As a preferred technical solution for the cab micro-boost system, the connecting pipe is a bendable pipe.

[0010] As a preferred technical solution for the cab micro-boost system, the filtration device further includes a pre-filter, the air outlet of which is connected to the air inlet of the air filter.

[0011] As a preferred technical solution for the cab micro-boost system, the filtration device further includes a filter tube, one end of which is connected to the air outlet of the pre-filter, and the other end of which is connected to the air inlet of the air filter. The filter tube is a flexible hose.

[0012] As a preferred technical solution for the cab micro-pressurization system, the air inlet of the air filter is positioned away from the ground;

[0013] The filtration device also includes a rain cap, which is fixed to the air filter and spaced apart from the air inlet of the air filter in a vertical direction. The projection of the rain cap in the vertical direction covers the air inlet of the air filter.

[0014] As a preferred technical solution for the cab micro-boost system, it also includes a mounting bracket, on which the filter device is fixed, and the mounting bracket is used to fix it to the outer wall of the cab.

[0015] As a preferred technical solution for the cab micro-boost system, the fixing frame includes a frame body and a clamp. The clamp is fitted onto the air filter and holds the air filter tightly. The frame body is fixedly connected to the clamp, and the frame body is used to be fixedly connected to the outer wall of the cab.

[0016] As a preferred technical solution for the cab micro-boosting system, the cab micro-boosting system further includes a controller, which is communicatively connected to the fan. The controller is configured to be installed in the cab and is used to control the start or stop of the fan.

[0017] As a preferred technical solution for the cab micro-pressurization system, the cab micro-pressurization system further includes a pressure sensor, which is communicatively connected to the controller. The pressure sensor is configured to detect the real-time pressure inside the cab, and the controller is used to control the start or stop of the fan based on the real-time pressure detected by the pressure sensor.

[0018] On the other hand, this utility model provides an engineering vehicle, including a cab and a cab micro-pressurization system in any of the above-mentioned schemes. The outer wall of the cab is provided with an air inlet communicating with the interior of the cab. The fan is fixed to the outer wall of the cab, and the air outlet of the fan is connected to the air inlet of the cab.

[0019] The cab micro-pressurization system and engineering vehicle provided by this utility model have at least the following beneficial effects:

[0020] The cab micro-pressurization system includes a fan and a filter. The fan is fixed to the outer wall of the cab, and its outlet is connected to the cab's air inlet. The filter includes an air filter and a connecting pipe. The air filter is located outside the cab, and its outlet is connected to the fan's air inlet via the connecting pipe. When the cab micro-pressurization system is working, the fan operates, allowing outside air to pass through the air filter and then enter the cab through the connecting pipe and fan, ensuring sufficient fresh air inside the cab and preventing problems such as thin air or poor air quality. The fan and air filter are connected via the connecting pipe, allowing them to be installed independently. When the cab's air inlet cannot accommodate both the fan and air filter simultaneously, only the fan needs to be installed at the cab's air inlet location, while the air filter can be installed in other suitable locations, simply connected via the connecting pipe. This cab micro-boosting system solves the problem that the integrated shell structure of the cab micro-boosting system is bulky and difficult to adapt to the complex spatial layout of the construction machinery vehicle. It is more flexible to install and does not require additional modification of the vehicle body structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the cab micro-pressurization system in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the assembly of the cab micro-pressurization system and the cab in an embodiment of this utility model.

[0023] In the picture:

[0024] 100. Driver's cab; 101. Mounting plate;

[0025] 1. Fan; 11. Guide pipe;

[0026] 21. Air filter; 22. Connecting pipe; 23. Pre-filter; 24. Filter pipe; 25. Controller; 26. Pressure sensor;

[0027] 3. Fixing frame; 31. Frame body; 32. Clamping hoop. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, 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. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0031] 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.

[0032] Example 1

[0033] like Figure 1 and Figure 2As shown, this embodiment provides a cab micro-pressurization system, which includes a fan 1 and a filter device. The fan 1 is configured to be fixed to the outer wall of the cab 100, and the air outlet of the fan 1 is connected to the air inlet of the cab 100. The filter device includes an air filter 21 and a connecting pipe 22. The air filter 21 is located outside the cab 100, and the air outlet of the air filter 21 is connected to the air inlet of the fan 1 through the connecting pipe 22. When the cab micro-pressurization system is working, the fan 1 operates, thereby allowing outside air to pass through the air filter 21 and then enter the cab 100 through the connecting pipe 22 and the fan 1, so as to ensure sufficient fresh air in the cab 100 and avoid the problem of thin air or poor air quality in the cab 100. The fan 1 and air filter 21 are connected by a connecting pipe 22, allowing them to be installed independently. When the air inlet of the cab 100 cannot accommodate both the fan 1 and the air filter 21 simultaneously, the fan 1 can be placed at the air inlet of the cab 100, while the air filter 21 can be installed in other suitable locations, simply connected by the connecting pipe 22. This cab micro-boosting system only requires consideration of the fan's installation space around the cab, solving the problem of the bulky integrated shell structure of cab micro-boosting systems, which is difficult to adapt to the complex spatial layout of construction machinery vehicles. Installation is more flexible and requires no additional modifications to the vehicle body structure.

[0034] Optionally, the fan 1 is fixedly provided with a guide pipe 11, one end of which is connected to the air outlet of the fan 1, and the guide pipe 11 passes through the air inlet of the cab 100 and the other end is located inside the cab 100. In this embodiment, since the wall of the cab 100 is a hollow structure, if the guide pipe 11 is not provided, some of the gas flowing out of the air outlet of the fan 1 will enter the hollow structure. To avoid this problem, the guide pipe 11 is passed through the air inlet of the cab 100 and the other end is located inside the cab 100, so that all the gas flowing out of the air outlet of the fan 1 enters the cab 100 through the guide pipe 11.

[0035] Optionally, the connecting pipe 22 is a bendable pipe. In this embodiment, the connecting pipe 22 includes multiple straight pipe sections and multiple elbow sections. The straight pipes and elbows are connected in combination to achieve bending of the connecting pipe 22, thereby connecting the air inlet of the fan 1 and the air outlet of the air filter 21 located at different positions. In other embodiments, the connecting pipe 22 can be a corrugated pipe.

[0036] Optionally, the filtration device also includes a pre-filter 23, the outlet of which is connected to the inlet of the air filter 21. The external space containing dust and impurities first undergoes preliminary dust filtration through the pre-filter 23, making the air entering the air filter 21 relatively clean. Then, the air undergoes further purification and filtration through the air filter 21, achieving two-stage filtration of the air. This results in cleaner air entering the cab 100 and extends the service life of the air filter 21.

[0037] In this embodiment, the pre-filter 23 is the first-stage filter in the filtration system, mainly used to intercept large particulate impurities or contaminants to protect subsequent precision filters or equipment from damage, while also extending the service life of the entire system. Its core principle is that the centrifugal force generated by the high-speed rotation of the fan 1 throws denser impurities or particles against the equipment wall, causing them to accumulate and thus achieving separation from the gas. This is existing technology and will not be elaborated further here.

[0038] Optionally, the filtration device further includes a filter tube 24, one end of which is connected to the air outlet of the pre-filter 23, and the other end of which is connected to the air inlet of the air filter 21. The filter tube 24 is a flexible tube. In this embodiment, the filter tube 24 is a flexible tube so that the position of the pre-filter 23 relative to the air filter 21 can be adjusted. This allows the relative positional relationship between the pre-filter 23 and the air filter 21 to be adjusted according to the specific conditions of the installation space, further improving the adaptability of the installation space.

[0039] Optionally, the cab micro-pressurization system also includes a mounting bracket 3, which is used to fix the filter device to the outer wall of the cab 100. In this embodiment, the filter device is fixed to the outer wall of the cab 100 by the mounting bracket 3. In other embodiments, it can also be fixed to a component outside the cab 100, such as the chassis.

[0040] Optionally, the mounting bracket 3 includes a frame 31 and a clamp 32. The clamp 32 is fitted onto and holds the air filter 21 tightly. The frame 31 is fixedly connected to the clamp 32, and the frame 31 is also fixedly connected to the outer wall of the cab 100. In this embodiment, the clamp 32 and the frame 31 can be integrally formed or detachably connected. The frame 31 and the outer wall of the cab 100 are detachably connected. This configuration facilitates the quick disassembly of the air filter 21.

[0041] Optionally, a mounting plate 101 is fixed to the outer wall of the cab 100, and a mounting bracket 3 is fixed to the mounting plate 101. In this embodiment, the mounting plate 101 and the mounting bracket 3 are fixed together to fix the filter device, so that the filter device and the fan 1 can be fixed separately.

[0042] Optionally, the cab micro-pressurization system also includes a controller 25, which is communicatively connected to the fan 1. The controller 25 is configured to be located inside the cab 100 and is used to control the start or stop of the fan 1. In this embodiment, the driver can actively turn the fan 1 on or off via the controller 25 according to the thinness and freshness of the air inside the cab 100, facilitating driver operation.

[0043] Optionally, the cab micro-pressurization system also includes a pressure sensor 26, which is communicatively connected to a controller 25. The pressure sensor 26 is configured to detect the real-time pressure inside the cab 100, and the controller 25 controls the start or stop of the fan 1 based on the real-time pressure detected by the pressure sensor 26. In this embodiment, when the fan 1 is in the start-up state, the pressure sensor 26 detects the real-time pressure inside the cab 100 and automatically adjusts the start and stop of the fan 1, as well as the operating power of the fan 1, based on the real-time pressure inside the cab 100, so as to maintain the most comfortable pressure for the human body inside the cab 100.

[0044] This embodiment also provides an engineering vehicle, including a cab 100 and the cab micro-pressurization system in the above scheme. The outer wall of the cab 100 is provided with an air inlet that connects to the interior of the cab 100. The fan 1 is fixed to the outer wall of the cab 100, and the air outlet of the fan 1 is connected to the air inlet of the cab 100.

[0045] Example 2

[0046] This embodiment is basically the same as Embodiment 1, except that the air inlet of the air filter 21 is set away from the ground; the filter device also includes a rain cap, which is fixed to the air filter 21 and spaced apart from the air inlet of the air filter 21 in the vertical direction, and the projection of the rain cap in the vertical direction covers the air inlet of the air filter 21.

[0047] In this embodiment, the working environment of engineering vehicles is harsh, typically operating on unpaved ground, which generates a large amount of dust. Therefore, the air near the ground contains a significant amount of dust, burdening the air filter 21. To address this, the air inlet of the air filter 21 is positioned away from the ground, allowing it to filter air further away from the surface. This air contains less dust than the air near the ground, reducing the burden on the air filter 21 and extending its lifespan. However, because the air inlet of the air filter 21 is positioned away from the ground, rain and snow can easily enter the air inlet, affecting its filtration efficiency. Therefore, a rain cap is installed on the air inlet of the air filter 21, with its vertical projection covering the air inlet to prevent rain and snow from entering.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A cab micro-pressurization system, characterized in that, include: A fan (1) is configured to be fixed to the outer wall of the cab (100), and the air outlet of the fan (1) is connected to the air inlet of the cab (100). The filtration device includes an air filter (21) and a connecting pipe (22). The air filter (21) is located outside the cab (100), and the air outlet of the air filter (21) is connected to the air inlet of the fan (1) through the connecting pipe (22).

2. The cab micro-pressurization system according to claim 1, characterized in that, The connecting pipe (22) is a bendable pipe.

3. The cab micro-pressurization system according to claim 1, characterized in that, The filtration device also includes a pre-filter (23), the air outlet of which is connected to the air inlet of the air filter (21).

4. The cab micro-pressurization system according to claim 3, characterized in that, The filtration device also includes a filter tube (24), one end of which is connected to the air outlet of the pre-filter (23), and the other end of which is connected to the air inlet of the air filter (21). The filter tube (24) is a flexible tube.

5. The cab micro-pressurization system according to claim 1, characterized in that, The air inlet of the air filter (21) is positioned away from the ground; The filter device also includes a rain cap, which is fixed to the air filter (21) and spaced apart from the air inlet of the air filter (21) in the vertical direction. The projection of the rain cap in the vertical direction covers the air inlet of the air filter (21).

6. The cab micro-pressurization system according to any one of claims 1-5, characterized in that, It also includes a mounting bracket (3), to which the filter device is fixed, and the mounting bracket (3) is used to fix it to the outer wall of the cab (100).

7. The cab micro-pressurization system according to claim 6, characterized in that, The fixing frame (3) includes a frame body (31) and a clamp (32). The clamp (32) is fitted onto the air filter (21) and holds the air filter (21). The frame body (31) is fixedly connected to the clamp (32), and the frame body (31) is used to be fixedly connected to the outer wall of the cab (100).

8. The cab micro-pressurization system according to any one of claims 1-5, characterized in that, The cab micro-boost system also includes a controller (25), which is communicatively connected to the fan (1). The controller (25) is configured to be located in the cab (100) and is used to control the start or stop of the fan (1).

9. The cab micro-pressurization system according to claim 8, characterized in that, The cab micro-pressurization system also includes a pressure sensor (26), which is communicatively connected to the controller (25). The pressure sensor (26) is configured to detect the real-time pressure inside the cab (100), and the controller (25) is used to control the start or stop of the fan (1) based on the real-time pressure detected by the pressure sensor (26).

10. An engineering vehicle, characterized in that, The system includes a cab (100) and a cab micro-pressurization system as described in any one of claims 1-9. The outer wall of the cab (100) is provided with an air inlet communicating with the interior of the cab (100). The fan (1) is fixed to the outer wall of the cab (100), and the air outlet of the fan (1) is connected to the air inlet of the cab (100).

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