Mixing truck

Abstract

The utility model discloses a mixer truck which comprises a truck frame and a plurality of air suspensions, the plurality of air suspensions are arranged along the circumferential direction of the truck frame, and the plurality of air suspensions are respectively connected with the truck frame. According to the mixer truck disclosed by the utility model, the air suspension is adopted, so that the smoothness and the driving comfort of the mixer truck are improved, and the mass center height and the attitude angle of the mixer truck during full load are also optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a mixer truck. Background Art

[0002] A mixer truck is a special vehicle used to transport building concrete. During transportation, the mixing drum of the mixer truck always rotates to ensure that the transported concrete does not solidify.

[0003] In related technologies, a steel plate elastic suspension is adopted for the mixer truck. During the driving process of the mixer truck, the ride comfort and comfort are poor. Moreover, after the mixer truck is fully loaded, the center of mass of the mixer truck becomes higher and the attitude angle becomes smaller, which is not conducive to the use of the mixer truck. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a mixer truck, which improves the ride comfort and driving comfort of the mixer truck by adopting an air suspension, and also optimizes the center of mass height and attitude angle of the mixer truck when it is fully loaded.

[0005] The mixer truck according to the embodiment of the utility model includes: a frame; a plurality of air suspensions, the plurality of air suspensions are arranged along the circumferential direction of the frame, and the plurality of air suspensions are respectively connected to the frame.

[0006] For the mixer truck according to the utility model, the height of the mixer truck can be adjusted by adopting an air suspension, so that the mixer truck can smoothly pass through complex road conditions, thereby improving the ride comfort and driving comfort of the mixer truck. In addition, when the mixer truck is fully loaded, the center of mass height of the mixer truck is reduced, and the attitude angle of the mixer truck is also increased, which helps the mixer truck to be used normally for a long time and improves the use performance of the mixer truck. In addition, the cleanliness of the mixer truck is also improved.

[0007] According to some embodiments of the utility model, each air suspension includes: a mounting bracket connected to the frame; a guiding arm, one end of the guiding arm is connected to the mounting bracket; an airbag, the airbag is installed at the other end of the guiding arm, and the airbag is connected to the frame.

[0008] According to some embodiments of the utility model, the maximum outer diameter of the airbag is 360 mm.

[0009] According to some embodiments of the utility model, the minimum distance between the centers of two airbags opposite to each other in the width direction of the frame is 765 mm.

[0010] According to some embodiments of the present utility model, the guiding arm includes: a first guiding arm segment that extends along the length direction of the vehicle frame, and one end of the first guiding arm segment is connected to the mounting bracket; a second guiding arm segment, one end of the second guiding arm segment is connected to the other end of the first guiding arm segment, and the second guiding arm segment extends along the height direction of the mixer truck; a third guiding arm segment, one end of the third guiding arm segment is connected to the other end of the second guiding arm segment, the third guiding arm segment is located on the side of the second guiding arm segment away from the vehicle frame, the third guiding arm segment extends along the length direction of the vehicle frame, and the airbag is connected to the third guiding arm segment.

[0011] According to some embodiments of the present utility model, the minimum thickness of the first guiding arm segment is h1, where h1 satisfies: 30 mm ≤ h1 ≤ 32 mm; and / or, the minimum thickness of the third guiding arm segment is h2, where h2 satisfies: 30 mm ≤ h2 ≤ 32 mm.

[0012] According to some embodiments of the present utility model, the length of the third guiding arm segment is L, where L satisfies: 331 mm ≤ L ≤ 337 mm.

[0013] According to some embodiments of the present utility model, the thickness of the second guiding arm segment is h3, and the height of the second guiding arm segment is H, where h3 and H respectively satisfy: 56 mm ≤ h3 ≤ 59 mm, 319.5 mm ≤ H ≤ 320.5 mm.

[0014] According to some embodiments of the present utility model, the mixer truck further includes: a height sensor disposed on the air suspension adjacent to the rear side of the mixer truck among the plurality of air suspensions, and the height sensor is connected to the guiding arm of the air suspension; a solenoid valve that communicates with the height sensor, and the solenoid valve is configured to receive a signal from the height sensor and control inflation or deflation of the airbag.

[0015] According to some embodiments of the present utility model, the solenoid valve is an ECAS solenoid valve.

[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0018] Figure 1 is a partial schematic view of a mixer truck according to an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 an enlarged view of part A circled in the figure;

[0020] Figure 3 is a schematic diagram of an air suspension according to an embodiment of the present invention;

[0021] Figure 4 is a top view of a part of a mixer truck according to an embodiment of the present invention, where the frame is not shown.

[0022] Reference numerals:

[0023] 100, mixer truck;

[0024] 1, frame;

[0025] 2, air suspension; 21, mounting bracket; 22, guide arm; 221, first guide arm section;

[0026] 222, second guide arm section; 223, third guide arm section; 23, airbag;

[0027] 3, height sensing member; 4, pneumatic valve. Detailed implementation manners

[0028] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary. Below, reference is made to Figures 1-4 describe the mixer truck 100 according to an embodiment of the present invention.

[0029] Refer to Figure 1 , the mixer truck 100 according to an embodiment of the present invention includes a frame 1 and a plurality of air suspensions 2. In the description of the present invention, the meaning of "a plurality of" is two or more.

[0030] Specifically, the plurality of air suspensions 2 are arranged circumferentially along the frame 1, and the plurality of air suspensions 2 are respectively connected to the frame 1. For example, in Figure 1In the example, four air suspensions 2 are provided. Two air suspensions 2 are located on the right side of the vehicle frame 1, and the two air suspensions 2 on the same side are arranged in the front-rear direction. The other two air suspensions 2 are located on the left side of the vehicle frame 1 and are arranged in the left-right direction, and the two air suspensions 2 arranged in the left-right direction are opposite to each other. Thus, compared with the traditional mixer truck using leaf spring suspensions, by adopting multiple air suspensions 2, it is convenient for the mixer truck 100 to adjust the height of the mixer truck 100 according to the road conditions, which helps to improve the stability of the mixer truck 100 during driving and the passing performance on complex road conditions, and further improves the ride comfort and driving comfort of the mixer truck 100 during driving. In addition, when the mixer truck 100 is fully loaded, the center-of-mass height of the mixer truck 100 is reduced, and the attitude angle is also increased, which reduces the pressure on the vehicle frame 1 and avoids problems such as material spillage, uneven axle load distribution, and easy tilting, and further helps the mixer truck 100 to be used normally for a long time. In addition, the air suspension 2 does not need to use lubricating oil during use, which is beneficial to improving the cleanliness of the mixer truck 100. It should be noted that the number of air suspensions 2 can be specifically set according to actual use to better meet actual applications.

[0031] For the mixer truck 100 according to the present invention, by adopting the air suspension 2, the height of the mixer truck 100 can be adjusted, which is convenient for the mixer truck 100 to smoothly pass through complex road conditions, and further improves the ride comfort and driving comfort of the mixer truck 100. In addition, when the mixer truck 100 is fully loaded, the center-of-mass height of the mixer truck 100 is reduced, and the attitude angle of the mixer truck 100 is also increased, which helps the mixer truck 100 to be used normally for a long time and improves the use performance of the mixer truck 100. In addition, the cleanliness of the mixer truck 100 is also improved.

[0032] According to some embodiments of the present invention, referring to Figure 1 , each air suspension 2 includes a mounting bracket 21, a guiding arm 22, and an airbag 23. The mounting bracket 21 is connected to the vehicle frame 1, one end of the guiding arm 22 is connected to the mounting bracket 21, the airbag 23 is installed at the other end of the guiding arm 22, and the airbag 23 is connected to the vehicle frame 1.

[0033] For example, in Figure 1In the example, the upper side of the mounting bracket 21 is connected to the vehicle frame 1, the front end of the guiding arm 22 is connected to the lower end of the mounting bracket 21, the rear end of the guiding arm 22 is connected to the lower side of the airbag 23, and the upper end of the airbag 23 is connected to the vehicle frame 1. With such an arrangement, the airbag 23 can share the pressure received by the vehicle frame 1, and the guiding arm 22 can share the pressure received by the airbag 23, thereby reducing the pressure received by the vehicle frame 1, further improving the load-bearing capacity of the mixer truck 100, avoiding the material spillage of the mixer truck 100, and also avoiding the problems of uneven axle load distribution and easy tilting of the mixer truck 100. Moreover, the layout of the whole vehicle of the mixer truck 100 is optimized. In addition, the stiffness of the airbag 23 is variable, that is, the airbag 23 can be lifted or lowered according to the height change of the vehicle frame 1 at the corresponding position, so that the vehicle frame 1 can be maintained within a certain height range, thereby improving the stability, comfort and smoothness of the mixer truck 100 during driving, and further improving the service performance of the mixer truck 100. Moreover, the air suspension 2 can also automatically adjust the hardness and other parameters of the airbag 23, thereby optimizing the attitude angle and the height of the center of mass of the mixer truck 100 when fully loaded.

[0034] According to some embodiments of the present invention, the maximum outer diameter of the airbag 23 is 360 mm. Thus, compared with the maximum outer diameter of the airbag in the prior art, the maximum outer diameter of the airbag 23 is reduced, that is, the cross-sectional area of the airbag 23 is reduced, thereby increasing the gas pressure in the airbag 23, improving the stiffness of the airbag 23, improving the load-bearing capacity of the mixer truck 100, and further facilitating the mixer truck 100 to better meet the requirements for the load-bearing capacity and the vehicle handling ability. In addition, the material consumption of the airbag 23 is also reduced, thereby reducing the production cost of the airbag 23.

[0035] According to some embodiments of the present invention, referring to Figure 4 , along the width direction of the vehicle frame 1 (such as Figure 4 the left-right direction shown), the minimum distance between the centers of the two airbags 23 opposite to each other (such as Figure 4 the d in

[0036] According to some embodiments of the present invention, referring to Figure 3 is 765 mm. With such an arrangement, the distance between the two airbags 23 in the left-right direction is reduced, so that the multiple airbags 23 are arranged more compactly, and further the layout space of the mixer truck 100 is optimized, facilitating the space arrangement of the mixer truck 100.

[0037] Specifically, the first guiding arm segment 221 extends along the length direction of the vehicle frame 1 (i.e., the front-rear direction). One end of the first guiding arm segment 221 is connected to the mounting bracket 21. One end of the second guiding arm segment 222 is connected to the other end of the first guiding arm segment 221. The second guiding arm segment 222 extends along the height direction of the mixer truck 100 (such as Figure 3 the up-down direction shown). One end of the third guiding arm segment 223 is connected to the other end of the second guiding arm segment 222. The third guiding arm segment 223 is located on the side of the second guiding arm segment 222 away from the vehicle frame 1. The third guiding arm segment 223 extends along the length direction of the vehicle frame 1 (i.e., the front-rear direction). The airbag 23 is connected to the third guiding arm segment 223.

[0038] For example, in the Figure 3 example, the front end of the first guiding arm segment 221 is connected to the lower end of the mounting bracket 21. The upper end of the second guiding arm segment 222 is connected to the rear end of the first guiding arm segment 221. The lower end of the second guiding arm segment 222 extends towards the side of the first guiding arm segment 221 away from the vehicle frame 1. The front end of the third guiding arm segment 223 is connected to the lower end of the second guiding arm segment 222. The third guiding arm segment 223 extends along the direction of the second guiding arm segment 222 away from the first guiding arm segment 221. The third guiding arm segment 223 is connected to the lower end of the airbag 23. The cross-section of the guiding arm 22 is generally in a "Z" shape. With such a setting, the structural strength of the guiding arm 22 is improved, thereby enhancing the supporting effect of the guiding arm 22 on the airbag 23. Furthermore, it helps to improve the ability of the guiding arm 22 to disperse the load of the airbag 23, improving the driving comfort of the mixer truck 100 and also enhancing the safety performance of the mixer truck 100 during driving. In addition, the structure of the guiding arm 22 is simple, which helps to improve the production efficiency of the guiding arm 22 and thus the production efficiency of the air suspension 2. It should be noted that the layout of the material is changed by using the topology optimization method to optimize the structure of the guiding arm 22.

[0039] According to some embodiments of the present invention, referring to Figure 3, the minimum thickness of the first guiding arm segment 221 is h1, where h1 satisfies: 30 mm ≤ h1 ≤ 32 mm. For example, when the minimum thickness h1 of the first guiding arm segment 221 is less than 30 mm, the thickness of the first guiding arm segment 221 is relatively small, thus reducing the structural strength of the first guiding arm segment 221. The first guiding arm segment 221 is prone to fracture, thereby shortening the service life of the first guiding arm 22 and also reducing the supporting effect of the guiding arm 22 on the airbag 23. When the minimum thickness h1 of the first guiding arm segment 221 is greater than 32 mm, the thickness of the first guiding arm 22 is relatively large, increasing the material consumption of the first guiding arm segment 221, thereby increasing the production cost of the guiding arm 22. Therefore, by setting the minimum thickness h1 of the first guiding arm segment 221 to satisfy 30 mm ≤ h1 ≤ 32 mm, the minimum thickness of the first guiding arm segment 221 is reasonably set, improving the structural strength of the first guiding arm 22, so that the first guiding arm segment 221 is not prone to fracture, extending the service life of the first guiding arm segment 221, and also improving the supporting effect of the guiding arm 22 on the airbag 23, thereby improving the performance of the air suspension 2 and also improving the safety performance during the driving of the mixer truck 100. For example, h1 = 31 mm, but it is not limited thereto.

[0040] According to some other embodiments of the present invention, referring to Figure 3 , the minimum thickness of the third guiding arm segment 223 is h2, where h2 satisfies: 30 mm ≤ h2 ≤ 32 mm. For example, when the minimum thickness h2 of the third guiding arm segment 223 is less than 30 mm, the thickness of the third guiding arm segment 223 is relatively small, thus reducing the structural strength of the third guiding arm segment 223. The third guiding arm segment 223 is prone to fracture, thereby shortening the service life of the third guiding arm segment 223 and also reducing the supporting effect of the guiding arm 22 on the airbag 23. When the minimum thickness h2 of the third guiding arm segment 223 is greater than 32 mm, the thickness of the third guiding arm 22 is relatively large, increasing the material consumption of the third guiding arm segment 223, thereby increasing the production cost of the guiding arm 22. Therefore, by setting the minimum thickness h2 of the third guiding arm segment 223 to satisfy 30 mm ≤ h2 ≤ 32 mm, the minimum thickness of the third guiding arm segment 223 is reasonably set, improving the structural strength of the third guiding arm segment 223, so that the third guiding arm segment 223 is not prone to fracture, extending the service life of the third guiding arm segment 223, and also improving the supporting effect of the guiding arm 22 on the airbag 23, thereby improving the performance of the air suspension 2 and also improving the safety performance during the driving of the mixer truck 100. For example, h2 = 31 mm, but it is not limited thereto.

[0041] According to still some other embodiments of the present invention, referring to Figure 3, the minimum thickness of the first guiding arm segment 221 is h1, and the minimum thickness of the third guiding arm segment 223 is h2, where h1 and h2 respectively satisfy: 30 mm ≤ h1 ≤ 32 mm, 30 mm ≤ h2 ≤ 32 mm. Thus, by setting the minimum thickness h1 of the first guiding arm segment 221 and the minimum thickness h2 of the third guiding arm segment 223 to satisfy 30 mm ≤ h1 ≤ 32 mm, 30 mm ≤ h2 ≤ 32 mm, the thicknesses of the first guiding arm segment 221 and the third guiding arm segment 223 are increased, and the minimum thicknesses of the first guiding arm segment 221 and the third guiding arm segment 223 are reasonably set, improving the structural strength of the first guiding arm segment 221 and the third guiding arm segment 223. As a result, the guiding arm 22 is not easily broken during use, extending the service life of the guiding arm 22, and also improving the supporting effect of the guiding arm 22 on the airbag 23, thereby contributing to improving the performance of the air suspension 2 and also improving the safety performance of the mixer truck 100 during driving. For example, h1 = 31 mm, h2 = 31 mm, but not limited thereto.

[0042] According to some embodiments of the present invention, referring to Figure 3 , the length of the third guiding arm segment 223 is L, where L satisfies: 331 mm ≤ L ≤ 337 mm. For example, when the length L of the third guiding arm segment 223 is less than 331 mm, the length of the third guiding arm segment 223 is relatively small, shortening the minimum distance between the second guiding arm segment 222 and the outer peripheral surface of the airbag 23 and reducing the contact area between the airbag 23 and the third guiding arm segment 223, which is not conducive to the installation of the airbag 23. When the length L of the third guiding arm segment 223 is greater than 337 mm, the layout compactness of the second guiding arm segment 222 and the airbag 23 is reduced, increasing the occupied space of the air suspension 2 and making it inconvenient for the overall layout of the mixer truck 100. In addition, it also increases the material consumption of the third guiding arm segment 223, thereby increasing the production cost of the third guiding arm segment 223 and further increasing the material consumption of the guiding arm 22. Thus, by setting the length L of the third guiding arm segment 223 to satisfy 331 mm ≤ L ≤ 337 mm, the length of the third guiding arm segment 223 is reasonably set, which is beneficial to the installation of the airbag 23 and can also ensure the structural strength of the guiding arm 22. In addition, the layout compactness of the second guiding arm segment 222 and the airbag 23 is improved, reducing the space occupied by the air suspension 2 on the mixer truck 100, thereby facilitating the overall layout of the mixer truck 100. In addition, it also reduces the material consumption of the third guiding arm segment 223, thereby reducing the production cost of the third guiding arm segment 223 and further reducing the production cost of the guiding arm 22. For example, L = 334 mm, but not limited thereto.

[0043] According to some embodiments of the present invention, referring to Figure 3, the thickness of the second guiding arm segment 222 is h3, and the height of the second guiding arm segment 222 is H, where h3 and H respectively satisfy: 56 mm ≤ h3 ≤ 59 mm, 319.5 mm ≤ H ≤ 320.5 mm. For example, when the thickness h3 of the second guiding arm segment 222 is less than 56 mm, the thickness of the second guiding arm segment 222 is relatively thin, thus reducing the structural strength of the second guiding arm segment 222, and further reducing the supporting effect of the guiding arm 22 on the airbag 23 and the service performance of the guiding arm 22. When the thickness h3 of the second guiding arm segment 222 is greater than 59 mm, the material consumption is increased, thus increasing the production cost of the second guiding arm segment 222, and further increasing the production cost of the guiding arm 22. When the height H of the second guiding arm segment 222 is less than 319.5 mm, the height of the second guiding arm segment 222 is relatively small, that is, the distance between the third guiding arm segment 223 and the vehicle frame 1 is reduced, thus reducing the space for placing the airbag 23 between the third guiding arm segment 223 and the vehicle frame 1, and further increasing the installation difficulty of the airbag 23. When the height H of the second guiding arm segment 222 is greater than 320.5 mm, the height of the second guiding arm segment 222 is relatively large, thus increasing the distance between the third guiding arm segment 223 and the vehicle frame 1, which will reduce the layout compactness among the vehicle frame 1, the airbag 23 and the guiding arm 22, and further reduce the overall layout of the mixer truck 100. In addition, the material consumption of the second guiding arm segment 222 is also increased, thus increasing the production cost of the guiding arm 22 segment.

[0044] Therefore, by setting the thickness of the second guiding arm segment 222 to h3 and the height of the second guiding arm segment 222 to H, which respectively satisfy: 56 mm ≤ h3 ≤ 59 mm, 319.5 mm ≤ H ≤ 320.5 mm, the thickness and height of the second guiding arm segment 222 are reasonably set, increasing the structural strength of the second guiding arm segment 222, thus increasing the supporting effect of the guiding arm 22 on the airbag 23, and further improving the service performance of the guiding arm 22. In addition, the material consumption of the second guiding arm segment 222 is reduced, thus reducing the production cost of the guiding arm 22. Moreover, the guiding arm 22, the airbag 23 and the vehicle are arranged compactly, and the installation difficulty of the airbag 23 is also reduced, thus improving the overall layout of the mixer truck 100. For example, h3 = 56 mm, H = 320 mm, but not limited thereto.

[0045] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 , the mixer truck 100 further includes a height sensor 3 and a solenoid valve (not shown in the figure).

[0046] Specifically, the height sensor 3 is provided on the air suspension 2 adjacent to the rear side of the mixer truck 100 among the multiple air suspensions 2. The height sensor 3 is connected to the guiding arm 22 of the air suspension 2. The solenoid valve communicates with the height sensor 3 and is used to receive the signal from the height sensor 3 and control the inflation or deflation of the airbag 23. For example, in Figure 1 and Figure 2 example, height sensors 3 are provided on the air suspensions 2 on both the left and right sides at the rear end of the mixer truck 100, and a solenoid valve is integrated on each height sensor 3.

[0047] During the driving of the mixer truck 100, after the height sensor 3 detects a change in the height of the guiding arm 22, it can transmit the information to the solenoid valve. After the solenoid valve controls the inflation of the airbag 23, the mixer truck 100 rises. After the solenoid valve controls the deflation of the airbag 23, the mixer truck 100 descends. That is to say, when the mixer truck 100 is loaded with more goods, the height of the vehicle frame 1 decreases. At the same time, when the airbag 23 is under pressure, the height of the guiding arm 22 decreases. At this time, the height sensor 3 detects the decrease in the height of the guiding arm 22, and the solenoid valve transmits the information to the airbag 23 and controls the inflation of the airbag 23 to lift the vehicle frame 1 so that the rear side of the vehicle frame 1 can be maintained at a certain height. Correspondingly, the airbag 23 can also exhaust air to reduce the height of the vehicle frame 1, so that the vehicle frame 1 is maintained within a certain height range. Thus, it is convenient to adjust the height of the mixer truck 100 according to the road conditions, thereby improving the ride comfort of the mixer truck 100 and also improving the comfort of the driver. Moreover, through the elasticity of the airbag 23, the attitude angle and the height of the center of mass of the fully loaded mixer truck 100 are optimized, improving the load-carrying capacity of the mixer truck 100, and thus improving the performance of the mixer truck 100. For example, the height sensor 3 can be set as a height sensor, but it is not limited thereto.

[0048] According to some embodiments of the present invention, the solenoid valve is an ECAS solenoid valve. The ECAS solenoid valve can limit the height and safety control of the mixer truck 100, so that it is convenient for the solenoid valve to adjust the height of the mixer truck 100 according to the road conditions during the driving of the mixer truck 100, and thus improve the performance of the mixer truck 100.

[0049] Optionally, referring to Figure 1 and Figure 4 , a pneumatic valve 4 is provided on the inner side wall of the vehicle frame 1, and the pneumatic valve 4 is opposite to one of the two air suspensions 2 arranged in the left-right direction at the front end of the vehicle frame 1. The solenoid valve is provided with an air inlet (not shown in the figure) and an air outlet (not shown in the figure), and the air inlet and the air outlet have a large cross-section. Thus, the rate of fluid passing through the solenoid valve is increased, thereby improving the working efficiency of the solenoid valve and also improving the response time, and further making the lifting and lowering process of the mixer truck 100 very rapid. For example, the optimized response time can reach 0.02 s.

[0050] Other configurations and operations of the mixer truck 100 according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.

[0051] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0053] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A mixer truck, characterized in that, Comprising: Frame; Multiple air suspensions, the multiple air suspensions are arranged circumferentially along the frame, the multiple air suspensions are respectively connected to the frame, each air suspension includes an airbag, and the airbag is connected to the frame; Height sensor, the height sensor is arranged on the air suspension adjacent to the rear side of the mixer truck among the multiple air suspensions; Solenoid valve, the solenoid valve communicates with the height sensor, and the solenoid valve is used to receive the signal of the height sensor and control the inflation or deflation of the airbag.

2. The mixer truck according to claim 1, wherein Each air suspension further includes: Mounting bracket, the mounting bracket is connected to the frame; Guide arm, one end of the guide arm is connected to the mounting bracket, the other end of the guide arm is connected to the airbag, and the height sensor is connected to the guide arm.

3. The mixer truck according to claim 1, wherein, The maximum outer diameter of the airbag is 360 mm.

4. The mixer truck according to claim 1, characterized in that, The minimum distance between the centers of two airbags opposite to each other in the width direction of the frame is 765 mm.

5. The mixer truck according to claim 2, characterized in that, The guide arm includes: First guide arm section, the first guide arm section extends along the length direction of the frame, and one end of the first guide arm section is connected to the mounting bracket; Second guide arm section, one end of the second guide arm section is connected to the other end of the first guide arm section, and the second guide arm section extends along the height direction of the mixer truck; Third guide arm section, one end of the third guide arm section is connected to the other end of the second guide arm section, the third guide arm section is located on the side of the second guide arm section away from the frame, the third guide arm section extends along the length direction of the frame, and the airbag is connected to the third guide arm section.

6. The mixer truck according to claim 5, wherein The minimum thickness of the first guide arm section is h1, where h1 satisfies: 30 mm ≤ h1 ≤ 32 mm; and / or The minimum thickness of the third guide arm section is h2, where h2 satisfies: 30 mm ≤ h2 ≤ 32 mm.

7. The mixer truck according to claim 5, characterized in that, The length of the third guide arm section is L, where L satisfies: 331 mm ≤ L ≤ 337 mm.

8. The mixer truck according to claim 5, wherein The thickness of the second guide arm section is h3, and the height of the second guide arm section is H, where h3 and H respectively satisfy: 56 mm ≤ h3 ≤ 59 mm, 319.5 mm ≤ H ≤ 320.5 mm.

9. The mixer truck according to any one of claims 1-8, characterized in that, The solenoid valve is an ECAS solenoid valve.

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