Low-wind-resistance suite of gas tractor

Abstract

The invention discloses a low-wind-resistance suite of a fuel gas tractor, and relates to the field of fuel gas tractor arrangement planes.The low-wind-resistance suite of the fuel gas tractor comprises a back assembly, and the back assembly comprises a flow guide unit used for being installed on the rear portion of a vehicle cab and covering a vehicle fuel gas cylinder; the gas cylinder fixing unit is located in the flow guide unit, the bottom of the gas cylinder fixing unit is used for being connected with a vehicle frame, the flow guide unit comprises a supporting framework and a diffusion type flow guide cover located outside the supporting framework, the diffusion type flow guide cover is through in the front-back direction, and one end of the diffusion type flow guide cover is used for abutting against the rear portion of a vehicle cab; the bottle body placing frame is provided with a plurality of vehicle gas bottle placing spaces; the apron board assembly comprises two side apron boards which are located at the two ends of the bottom of the diffusion type air guide cover and used for being connected with a vehicle frame, and the tops of the side apron boards abut against the bottom of the diffusion type air guide cover. Wind resistance can be reduced, turbulence of airflow at a vehicle gas cylinder is avoided, and vehicle power is improved.

Description

Technical Field

[0001] The invention relates to the field of gas tractor layout solutions, and in particular to a low wind resistance kit for a gas tractor. Background Art

[0002] According to domestic and foreign research on the impact of air resistance on vehicles during driving, about 10% of the fuel used to fight air resistance during driving is used. According to a foreign study, when the vehicle speed is less than 60km / h, the impact of air resistance can be ignored, but when the vehicle speed exceeds 60km / h or even faster, the impact of air resistance becomes crucial.

[0003] However, the current domestic gas tractors of various brands, especially the backpack-type gas cylinders, are arranged at the rear of the cab and exposed. Due to the arrangement of the gas cylinders in this area, the airflow is prone to form turbulence here. At the same time, the airflow will also enter the bottom of the vehicle through this area, reducing the vehicle's driving stability and increasing wind resistance. Summary of the invention

[0004] The present application provides a low wind resistance kit for a gas tractor, which can solve the technical problem in the prior art that, due to the arrangement of the gas cylinders in the vehicle, interference airflow is easily formed at the back of the cab, thereby increasing driving wind resistance.

[0005] The embodiment of the present application provides a low wind resistance kit for a gas tractor, comprising:

[0006] A back assembly, the back assembly comprising a guide unit for installation at the rear of a vehicle cab and covering the outside of a vehicle gas cylinder, and a gas cylinder fixing unit located in the guide unit and having a bottom for connecting to a vehicle frame, the guide unit comprising a support frame and a diffuser guide cover located outside the support frame, the diffuser guide cover being through-through front and back and having one end for abutting against the rear of the vehicle cab, the fixing unit comprising a bottle body placement rack connected to the support frame and having a plurality of vehicle gas cylinder placement spaces;

[0007] A skirt assembly comprises two side skirts respectively located at two ends of the bottom of the diffuser air deflector and used for connecting the vehicle frame, and the top of the side skirt is abutted against the bottom of the diffuser air deflector.

[0008] In one embodiment, the support frame includes a horizontally arranged top frame and two side frames arranged along the length direction of the top frame, wherein one of the side frames is connected to one end of the top frame, and the other side frame is connected to the other end of the top frame.

[0009] In one embodiment, the side frame is provided with a plurality of groups of rack connection units arranged along the height direction of the side frame.

[0010] In one embodiment, the rack connection unit includes rack connection rods disposed on both sides of the wide sides of the side frame, and the rack connection rods extend horizontally toward the direction close to the bottle rack and connect the sides of the bottle rack.

[0011] In one embodiment, a first connecting end is provided at one end of the placement rack connecting rod connected to the bottle placement rack.

[0012] In one embodiment, the bottle placement rack includes a supporting vertical plate and a supporting horizontal plate located on the front side of the supporting vertical plate to form a placement space.

[0013] In one embodiment, both sides of the supporting vertical plate and the side surface of one end of the supporting horizontal plate away from the supporting vertical plate are provided with second connecting ends matching the first connecting ends.

[0014] In one embodiment, the supporting cross plate is provided with a matching surface for matching with the outer curved surface of the vehicle gas cylinder.

[0015] In one embodiment, a frame connection unit is provided on the inner side of the side skirt panel facing the frame, and the frame connection unit includes a plurality of connection brackets, and the plurality of connection brackets are spaced apart along the length direction of the side skirt panel.

[0016] In one embodiment, the diffuser air deflector is used to abut against one side of the rear of the vehicle cab, and a sealing unit is provided between the top of the side skirt plate and the bottom of the diffuser air deflector.

[0017] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0018] 1. The low wind resistance kit for gas tractors in the present application is provided with a diffuser deflector having one end against the rear of the vehicle cab and covering the outside of the vehicle gas cylinder, and cooperates with the side skirts provided below the diffuser deflector, so as to reduce the airflow entering the two sides of the vehicle when the vehicle is running at high speed, and avoid the formation of turbulence in the airflow;

[0019] 2. In the low wind resistance kit for gas tractors in the present application, the air guide unit is abutted against the rear of the vehicle cab, and the side skirts are abutted against the bottom of the diffuser air guide cover in the air guide unit, which can improve the sealing of the kit itself and between the kit and the vehicle, and further prevent the airflow from flowing into the rear of the vehicle cab. At the same time, the side skirts abutting against the bottom of the diffuser air guide cover also means that the outer surface of the side skirts and the two sides of the diffuser air guide cover are located on the same longitudinal axis, which helps to guide the airflow to flow smoothly along the side of the vehicle, reduce the turbulence and resistance of the airflow on the side of the vehicle, and thus improve the aerodynamic performance of the vehicle;

[0020] 3. By setting up a diffusion-type deflector, the vehicle gas cylinder can also be protected to prevent the vehicle gas cylinder from being directly hit and avoid direct sunlight on the vehicle gas cylinder, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of the structure of a low wind resistance kit for a gas tractor provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of a support frame structure in a low wind resistance kit for a gas tractor provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a bottle placement rack in a low wind resistance kit for a gas tractor provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the side skirt structure in a low wind resistance kit for a gas tractor provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the position of a sealing unit in a low wind resistance kit for a gas tractor provided in an embodiment of the present application.

[0027] In the figure: 1. Support frame; 101. Top frame; 102. Side frame; 103. Placement rack connecting rod; 104. First connection end; 2. Diffusion-type air guide cover; 3. Bottle placement rack; 301. Support vertical plate; 302. Support horizontal plate; 303. Second connection end; 4. Side skirt plate; 5. Connecting bracket; 6. Sealing unit; 601. First sealing strip; 602. Second sealing strip. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] The embodiment of the present application provides a low wind resistance kit for a gas tractor, which can solve the technical problem in the prior art that, due to the arrangement of the gas cylinders in the vehicle, interference airflow is easily formed at the back of the cab, thereby increasing driving wind resistance.

[0030] The low wind resistance kit for gas tractors in the present application includes a back assembly and a skirt assembly, wherein the back assembly is mainly used to be installed behind the vehicle cab to fix and cover the vehicle gas cylinder and optimize and guide the airflow direction during vehicle driving. The cross-section of the end of the back assembly facing the vehicle cab is consistent with the cross-section at the rear of the vehicle cab and is flush with the vehicle cab. This design ensures a smooth transition between the back assembly and the vehicle cab, helps to reduce the turbulence and resistance of the airflow between the two, and thus reduces the airflow resistance. The skirt assembly is arranged below the back assembly and connected to the frame, and the top of the skirt assembly is in contact with the bottom of the back assembly, further reducing the airflow entering the bottom and back of the vehicle.

[0031] Specifically, the back assembly includes a guide unit for installation at the rear of the vehicle cab and covering the outside of the vehicle gas cylinder, and a gas cylinder fixing unit located in the guide unit and having a bottom for connection with the vehicle frame.

[0032] The gas bottle fixing unit is arranged inside the guide unit, and is used to carry and fix the vehicle gas bottle, so as to reduce the risk of squeezing and bumping of the vehicle gas bottle during driving. After assembly, the guide unit covers the gas bottle fixing unit and the vehicle gas bottle. At the same time, the bottom of the gas bottle fixing unit is connected to the top of the frame behind the vehicle cab through a connector, and the gas bottle fixing unit is connected to the guide unit, which means that the connection between the back assembly and the vehicle relies on the gas bottle fixing unit to form an integral structure. This connection not only enhances the overall stability of the back assembly, simplifies the installation process, and allows the guide unit to be easily disassembled for maintenance or replacement when necessary, facilitating the installation and disassembly of the guide unit.

[0033] Figure 1 A schematic diagram of a low wind resistance kit for a gas tractor provided in an embodiment of the present application is shown in FIG. Figure 1As shown, the air guide unit includes a support frame 1 and a diffuser air guide cover 2 located outside the support frame 1. The diffuser air guide cover 2 is through-through from front to back and one end of which is used to support the rear of the vehicle cab. The support frame 1 is the basic structure of the air guide unit, which provides the necessary strength and stability to support the weight of the entire air guide unit and resist the pressure of the external fluid. In a possible embodiment of the present application, the support frame 1 is made of a lightweight but strong material, such as aluminum alloy or high-strength steel, and its shape and size will also vary depending on the specific application to ensure that it matches the cross-section at the rear of the vehicle cab and achieves a smooth airflow transition.

[0034] The diffuser air deflector 2 is a key component located outside the supporting frame 1. Its main function is to guide the fluid to flow in a specific manner. At the same time, the diffuser air deflector 2 is overall trumpet-shaped and the longitudinal section of the diffuser air deflector 2 is door-shaped, which helps the airflow to gradually diffuse when passing through, reducing turbulence and resistance. After assembly, the longitudinal cross-sectional area of ​​the diffuser air deflector 2 gradually expands in the direction away from the vehicle cab, that is, the end of the diffuser air deflector 2 with a smaller cross-sectional area is against the rear of the vehicle cab, and the end with a larger cross-sectional area faces the rear of the vehicle, so that the airflow can gradually diffuse when passing through the diffuser air deflector 2. This diffusion helps to reduce the turbulence and resistance generated by the fluid when passing through a narrow area, thereby improving the overall flow efficiency. When driving at high speed, the diffuser air deflector 2 can help the vehicle maintain stability. By optimizing the flow path of the fluid, the impact of side winds on the vehicle can be reduced, thereby improving driving safety.

[0035] The setting of the diffusion-type air deflector 2 can not only guide the airflow, but also play a certain protective role. It can prevent objects flying from both sides of the vehicle from hitting the vehicle gas cylinder when the vehicle is driving at high speed, or prevent objects falling from the top of the vehicle from hitting the vehicle gas cylinder when parked, etc. At the same time, the liquefied natural gas inside the vehicle gas cylinder needs to control the temperature, and the diffusion-type air deflector 2 can also effectively prevent sunlight from directly shining on the gas cylinder, causing abnormal heating of the vehicle gas cylinder.

[0036] The gas cylinder fixing unit includes a bottle body rack 3 connected to a supporting frame 1 and having a plurality of vehicle gas cylinder placement spaces. In combination with the above description, the back assembly covers the outer periphery of the vehicle gas cylinder, so the back assembly has a certain width, and the bottle body rack 3 is used to place the vehicle gas cylinder. Therefore, in a possible embodiment, the bottle body rack 3 is the same width as the back assembly, and the two side edges of the bottle body rack 3 are connected to the supporting frame 1 through connecting parts, and the bottom of the bottle body rack 3 is connected to the frame through connecting parts. While ensuring the stable connection between the back assembly and the vehicle, the weight of the vehicle gas cylinder is effectively transferred to the frame.

[0037] At the same time, gas vehicles have various models and various power sources, and may have one, two or even more vehicle gas cylinders. When there are multiple vehicle gas cylinders, they are generally assembled longitudinally. Therefore, the bottle body placement rack 3 also has a placement space consistent with the number of vehicle gas cylinders, and when there are multiple placement spaces, they are consistent with the layout of the vehicle gas cylinders, and are arranged longitudinally, and each placement space is used to place a vehicle gas cylinder.

[0038] Furthermore, the skirt panel assembly includes two side skirt panels 4 which are respectively located at the two ends of the bottom of the diffuser air deflector 2 and are used to connect to the frame, and the top of the side skirt panels 4 is abutted against the bottom of the diffuser air deflector 2. There are two groups of side skirt panels 4, which are respectively connected to the two sides of the frame through connecting parts and are spaced a certain distance from the frame. After assembly, the top of the side skirt panels 4 abuts against the bottom of the diffuser air deflector 2 and the outside of the side skirt panels 4 is on the same longitudinal axis as the outer wall of the diffuser air deflector 2 to ensure the longitudinal smoothness between the diffuser air deflector 2 and the side skirt panels 4, which not only conforms to the principles of aerodynamics, but also gives the vehicle a neater and streamlined appearance.

[0039] Furthermore, Figure 2 A structural schematic diagram of a support frame 1 in a low wind resistance kit for a gas tractor provided in an embodiment of the present application, as shown in FIG. Figure 2 As shown, the support frame 1 includes a horizontally arranged top frame 101 and two side frames 102 arranged along the length direction of the top frame 101, wherein one side frame 102 is connected to one end of the top frame 101, and the other side frame 102 is connected to the other end of the top frame 101. The support frame 1 extends along the length direction of the vehicle body and has a certain width, and the width is greater than the diameter of the vehicle gas cylinder so as to completely cover the outside of the vehicle gas cylinder. The top frame 101 and the side frames 102 are equal in width and the two side frames 102 are respectively connected to the two ends of the top frame 101 by connecting parts to form a door-type frame. The top frame 101 and the side frames 102 are modularly arranged and can be adjusted according to different vehicle models and needs, thereby improving the convenience and flexibility of installation, and also improving the convenience of installation work.

[0040] In a possible implementation, the top frame 101 includes two main support rods that are opposite to each other along the width direction of the vehicle, and a plurality of auxiliary support rods that are perpendicular to the main support rods are arranged between the two support rods, and the two ends of the auxiliary support rods are respectively fixedly connected to the two main support rods to form an integral body. The structure of the side frame 102 can refer to the setting method of the top frame 101. It should be noted that the above is only an example of the structure of the top frame 101 and the side frame 102, and other structural forms can also be used, and no specific limitation is made here.

[0041] Furthermore, the side frame 102 is provided with a plurality of groups of rack connection units arranged along the height direction of the side frame 102, each side frame 102 is provided with at least one group of rack connection units, and the rack connection units on the two side frames 102 are relatively arranged to be used to respectively connect the two sides of the bottle body rack 3. In a possible embodiment, in order to ensure uniform force and connection stability, each side frame 102 is provided with three groups of rack connection units, and the three groups of rack connection units are equidistantly arranged along the height direction of the side frame 102 to respectively connect the top position, middle position and bottom position of the bottle body rack 3.

[0042] Through the placement rack connecting unit, the bottle body placement rack 3 can be firmly fixed on the support frame 1, ensuring the structural integrity of the entire guide unit. At the same time, it also makes the installation and disassembly of the bottle body placement rack 3 simple and quick, improving the convenience of maintenance.

[0043] Specifically, the rack connection unit includes a rack connection rod 103 arranged on both sides of the wide side of the side frame 102, and the rack connection rod 103 extends horizontally in the direction close to the bottle body rack 3 and connects the side of the bottle body rack 3. Each rack connection unit has two rack connection rods 103. One end of the two rack connection rods 103 in the same rack connection unit is respectively connected to the two sides of the wide side of the same side of the side frame 102, and the other ends of the two rack connection rods 103 are respectively used to connect the two sides of the wide side of the bottle body rack 3. In a possible embodiment, a stiffening rod is provided between one end of the two rack connection rods 103 connected to the wide side of the side frame 102 to improve the overall structural stability of the rack connection unit.

[0044] Furthermore, Figure 3 A schematic diagram of the structure of a bottle holder 3 in a low wind resistance kit for a gas tractor provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, a first connecting end 104 is provided at one end of the placement rack connecting rod 103 connected to the bottle body placement rack 3. In a possible embodiment, the first connecting end 104 is a connecting iron plate, and one side of the connecting iron plate is fixedly connected to the placement rack connecting rod 103 to form a whole, ensuring a firm connection between the connecting iron plate and the placement rack connecting rod 103, thereby improving the strength and stability of the entire connection structure. A plurality of connecting holes for connecting parts (such as bolts, nuts, etc.) to pass through are provided on the connecting iron plate, and connecting parts are provided in these connecting holes to firmly fix the bottle body placement rack 3 on the placement rack connecting rod 103.

[0045] Furthermore, the bottle rack 3 includes a support vertical plate 301 and a support horizontal plate 302 located on the front of the support vertical plate 301 to form a placement space. The support vertical plate 301 is one of the main supporting structures of the bottle rack 3, which has sufficient strength and rigidity to bear the weight of the vehicle gas cylinder and various forces during driving. The support horizontal plate 302 is located on the front of the support vertical plate 301 and is connected to the support vertical plate 301 to form a placement space. It should be noted here that the front of the support vertical plate 301 refers to the side of the support vertical plate 301 facing the vehicle cab after assembly, and the back of the support vertical plate 301 refers to the side facing the rear of the vehicle. The bottle rack 3 provides a stable and easily accessible storage space so that the vehicle gas cylinders can be neatly arranged.

[0046] Specifically, in combination with the above description, the connection between the diversion unit and the vehicle relies on the bottle rack 3. At the same time, in addition to connecting the diversion unit, the bottle rack 3 also undertakes the important task of placing and fixing the vehicle gas cylinder. Vehicle gas cylinders usually store high-pressure gas, such as compressed natural gas or liquefied petroleum gas, which is used to provide power for the vehicle. Therefore, the bottle rack 3 needs to have sufficient strength and stability to ensure the safety and reliability of the vehicle gas cylinder during driving. Therefore, the bottle rack 3 is made of wear-resistant metal material as a whole to have higher strength and durability, and can withstand greater loads and vibrations.

[0047] Combined with the above description, the vehicle may have one, two or even more gas cylinders. Therefore, the number of supporting cross plates 302 is based on the number of gas cylinders in the vehicle, and no specific restriction is made in the present application. One end of the supporting cross plate 302 is connected to the supporting vertical plate 301 via a connector, and the other end extends horizontally toward the direction of the vehicle cab, and the extension width of the supporting cross plate 302 does not exceed the width of the diffuser air deflector 2. In a possible embodiment, the supporting cross plate 302 is the same width as the diffuser air deflector 2.

[0048] In combination with the above description, one of the placement rack connecting rods 103 in the same group of placement rack connecting units is provided with one end of a first connecting member connected to one side of the support vertical plate 301, and the other placement rack connecting rod 103 is provided with one end of a first connecting member connected to the side of the support horizontal plate 302 away from the support vertical plate 301.

[0049] Furthermore, in a possible embodiment, the bottle rack 3 also includes a diagonal brace group, which includes two diagonal brace rods, and the two ends of the diagonal brace rods are respectively connected to the side of the supporting vertical plate 301 and the bottom of the supporting horizontal plate 302 to improve the overall stability and bearing capacity of the bottle rack 3.

[0050] Further, in combination with the above description, the bottle body rack 3 is used to connect with the frame. Therefore, in a possible embodiment, a support leg unit is also provided at the bottom of the bottle body rack 3. Specifically, the support leg unit includes four connecting legs, which are respectively located on both sides of the bottom of the supporting vertical plate 301 and a supporting horizontal plate 302 located at the bottom away from both sides of the bottom of the supporting vertical plate 301, and a horizontal connecting plate is provided at the bottom of the connecting legs, and a plurality of threaded holes are provided on the horizontal connecting plate, so that a stable connection between the bottle body rack 3 and the frame is achieved through connecting bolts.

[0051] Furthermore, both sides of the supporting vertical plate 301 and the side surface of the end of the supporting horizontal plate 302 away from the supporting vertical plate 301 are provided with a second connecting end 303 matching the first connecting end 104. Combined with the above description, in a possible embodiment, the second connecting end 303 is a plurality of matching holes, which are opposite to the connecting holes on the connecting iron plate in the first connecting end 104, and the two are mechanically connected via connecting bolts.

[0052] Furthermore, the supporting horizontal plate 302 is provided with a mating surface for matching the outer arc surface of the vehicle gas cylinder. The body of the vehicle gas cylinder is cylindrical. Therefore, in the present application, the mating surface is a concave arc surface. The vehicle gas cylinder can be directly engaged in the mating surface to limit the vehicle gas cylinder and limit the vehicle gas cylinder by physical constraints to prevent shaking during the driving of the vehicle. In actual assembly work, after the vehicle gas cylinder is placed on the supporting horizontal plate 302, it is usually fixed with a cable tie. Therefore, in a possible implementation method of the application, the supporting horizontal plate 302 and the supporting vertical plate 301 are provided with fixing holes for fixing the two ends of the cable tie. The specific setting position and setting number are determined according to the arrangement form of the cable tie, and no specific restrictions are made in the present application. The bottle body placement rack 3 provides stable and reliable support and fixation for the vehicle gas cylinder through the design of the mating surface and the fixing method of the cable tie. At the same time, the setting of the fixing hole also provides convenience and flexibility for the fixation of the cable tie, meeting the safety and stability requirements of the gas cylinder.

[0053] Furthermore, Figure 4 A schematic diagram of the structure of the side skirt 4 in a low wind resistance kit for a gas tractor provided in an embodiment of the present application is shown in FIG. Figure 4As shown, a frame connecting unit is provided on the inner side of the side skirt panel 4 facing the frame, and the frame connecting unit includes a plurality of connecting brackets 5, and the plurality of connecting brackets 5 are spaced along the length direction of the side skirt panel 4. There are two groups of side skirt panels 4, which are respectively located on the two sides of the frame behind the vehicle cab and are connected to the frame via connecting pieces. Each side skirt panel 4 includes an outer panel body and a panel body skeleton located on the inner side of the outer panel body. It should be noted that the inner side of the outer panel body refers to a side facing the frame, and the connecting bracket 5 is also located on the inner side of the side skirt panel 4. One end of the connecting bracket 5 is mechanically connected to the panel body skeleton, and the other end extends horizontally and is mechanically connected to the frame, so as to effectively fix the side skirt panel 4 on the frame to prevent loosening or falling off due to vibration or impact. At the same time, the connecting bracket 5 has A certain length makes the side skirt panel 4 and the frame spaced a certain distance apart, so that the outside of the side skirt panel 4 and the outer wall of the diffuser air deflector 2 are in the same axial direction, which not only provides the necessary installation space for the side skirt panel 4, ensures the relative independence between the side skirt panel 4 and the frame, and helps to reduce the transmission of vibration and noise, but also ensures the longitudinal smoothness between the diffuser air deflector 2 and the side skirt panel 4, helps to guide the airflow to flow smoothly along the side of the vehicle, reduces the turbulence and resistance of the airflow on the side of the vehicle, thereby improving the aerodynamic performance of the vehicle. At the same time, the top of the side skirt panel 4 abuts against the bottom of the diffuser air deflector 2, and the contact relationship between the two can form an effective airflow barrier, minimizing the possibility of airflow entering the rear of the vehicle cab through the gap.

[0054] Furthermore, based on the stress on the side skirt panel 4 and the overall stability of the structure, in a possible implementation, the number of connecting brackets 5 on the same side skirt panel 4 is at least two, which are respectively located at the head and tail ends of the side skirt panel 4, to ensure that the side skirt panel 4 can be evenly distributed when subjected to stress, thereby avoiding damage or deformation of the side skirt panel 4 caused by excessive stress at a single point, and the specific form of the connecting bracket 5 is not specifically limited in the present application, and can be flexibly adjusted according to different vehicle models, frame structures and the shape of the side skirt panel 4, as long as the stable connection between the side skirt panel 4 and the frame is guaranteed.

[0055] The side skirts 4 can also play a certain protective role. They can prevent people from being rolled under the vehicle from the side, prevent the vehicle's fuel tank, battery, gas cylinder and other safety-related parts from being directly hit, and can also improve the overall appearance of the vehicle, protect the integrity of the vehicle body appearance, and make the vehicle look neater.

[0056] Furthermore, Figure 5 A schematic diagram of the position of the sealing unit 6 in a low wind resistance kit for a gas tractor provided in an embodiment of the present application, as shown in FIG. Figure 5As shown, a sealing unit 6 is provided on one side of the diffuser air deflector 2 that abuts against the rear of the vehicle cab and between the top of the side skirt 4 and the bottom of the diffuser air deflector 2. In combination with the above description, one end of the diffuser air deflector 2 facing the vehicle cab abuts against the rear of the vehicle cab, and the top of the side skirt 4 abuts against the bottom of the diffuser air deflector 2, so as to reduce the gap between the kit itself and between the kit and the vehicle, and further reduce the airflow entering. Therefore, in a possible embodiment of the present application, the sealing unit 6 includes a first sealing strip 601 that is horizontally arranged and located between the top of the side skirt 4 and the bottom of the diffuser air deflector 2, which can fill the tiny gap between the two and prevent airflow from entering from this area. Furthermore, the sealing unit 6 includes a second sealing strip 602 that is also located on one side of the diffuser air deflector 2 that abuts against the rear of the vehicle cab. The longitudinal section of the diffuser air deflector 2 is door-shaped, so the second sealing strip 602 is also door-shaped, ensuring that the second sealing strip 602 can fit tightly on the complex curved surface between the diffuser air deflector 2 and the vehicle cab, thereby improving the sealing between the structures. It should be noted that although the above describes a possible implementation, in actual application it can be adjusted according to the specific design and needs of the vehicle. For example, the material, shape and size of the sealing strip can be optimized as needed to achieve the best sealing effect.

[0057] The low wind resistance kit for gas tractors in the present application is provided with a guide unit, wherein the guide unit includes a diffuser guide hood 2 with one end pressed against the rear of the vehicle cab and covering the outside of the vehicle gas cylinder, and cooperates with the side skirt panels 4 arranged below the diffuser guide hood 2, so as to reduce the airflow entering both sides of the vehicle when the vehicle is traveling at high speed, and the diffusion of the diffuser guide hood 2 can guide the fluid to flow in a specific manner to avoid the formation of turbulent airflow. At the same time, the guide unit is pressed against the rear of the vehicle cab, and the side skirt panels 4 are pressed against the bottom of the diffuser guide hood 2, and cooperates with the sealing unit 6, so as to significantly improve the fuel efficiency and driving stability of the vehicle.

[0058] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0059] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A low wind resistance kit for a gas tractor, characterized in that: include: A back assembly, the back assembly comprising a guide unit for installation at the rear of a vehicle cab and covering the outside of a vehicle gas cylinder, and a gas cylinder fixing unit located in the guide unit and having a bottom for connecting to a vehicle frame, the guide unit comprising a support frame (1) and a diffuser guide cover (2) located outside the support frame (1), the diffuser guide cover (2) being through-through from front to back and one end of which is used to abut against the rear of the vehicle cab, the gas cylinder fixing unit comprising a bottle body placement rack (3) connected to the support frame (1) and having a plurality of vehicle gas cylinder placement spaces; A skirt panel assembly, the skirt panel assembly comprising two side skirt panels (4) respectively located at two ends of the bottom of the diffuser air deflector (2) and used for connecting to a vehicle frame, and the top of the side skirt panel (4) is abutted against the bottom of the diffuser air deflector (2).

2. A low wind resistance kit for a gas tractor as claimed in claim 1, characterized in that: The support frame (1) comprises a horizontally arranged top frame (101) and two side frames (102) arranged along the length direction of the top frame (101), wherein one of the side frames (102) is connected to one end of the top frame (101), and the other side frame (102) is connected to the other end of the top frame (101).

3. A low wind resistance kit for a gas tractor as claimed in claim 2, characterized in that: The side frame (102) is provided with a plurality of groups of placement frame connection units arranged along the height direction of the side frame (102).

4. A low wind resistance kit for a gas tractor as claimed in claim 3, characterized in that: The rack connection unit comprises rack connection rods (103) arranged on both sides of the wide sides of the side frame (102), and the rack connection rods (103) extend horizontally in a direction close to the bottle rack (3) and connect the side surfaces of the bottle rack (3).

5. A low wind resistance kit for a gas tractor as claimed in claim 4, characterized in that: One end of the placement rack connecting rod (103) connected to the bottle placement rack (3) is provided with a first connection end (104).

6. A low wind resistance kit for a gas tractor as claimed in claim 5, characterized in that: The bottle placement rack (3) comprises a supporting vertical plate (301) and a supporting horizontal plate (302) located on the front side of the supporting vertical plate (301) and used to form a placement space.

7. A low wind resistance kit for a gas tractor as claimed in claim 6, characterized in that: Second connecting ends (303) matching with the first connecting ends (104) are provided on both sides of the supporting vertical plate (301) and on the side surface of one end of the supporting horizontal plate (302) away from the supporting vertical plate (301).

8. A low wind resistance kit for a gas tractor as claimed in claim 7, characterized in that: The supporting transverse plate (302) is provided with a matching surface for matching with the outer arc surface of the vehicle gas cylinder.

9. A low wind resistance kit for a gas tractor as claimed in claim 1, characterized in that: The inner side surface of the side skirt plate (4) facing the frame is provided with a frame connection unit, the frame connection unit comprises a plurality of connection brackets (5), and the plurality of connection brackets (5) are arranged at intervals along the length direction of the side skirt plate (4).

10. A low wind resistance kit for a gas tractor as claimed in claim 1, characterized in that: The diffuser air deflector (2) is used to abut against one side of the rear of the vehicle cab, and a sealing unit (6) is provided between the top of the side skirt plate (4) and the bottom of the diffuser air deflector (2).

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