A low wind resistance kit for gas tractor

Abstract

The present invention discloses a low-drag kit for a gas-powered tractor, and relates to the field of designing layout solutions for gas-powered tractors. The low-drag kit comprises a back assembly, a guide unit for installation behind a vehicle cab and covering the vehicle's gas cylinder, and a gas cylinder fixing unit located within the guide unit and having a bottom for connection to a vehicle frame. The guide unit comprises a support frame and a diffuser shroud located outside the support frame, the diffuser shroud extending front to back and having one end for abutting the rear of the vehicle cab. The gas cylinder fixing unit comprises a bottle holder connected to the support frame and having a plurality of spaces for placing vehicle gas cylinders. The skirt assembly comprises two side skirts located at either end of the bottom of the diffuser shroud and for connection to the vehicle frame, with the tops of the side skirts abutting the bottom of the diffuser shroud. The kit can reduce wind resistance, prevent turbulence at the vehicle's gas cylinders, and improve vehicle power.

Description

Technical Field

[0001] The present 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 in a vehicle is used to combat air resistance. 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 of a gas tractor with a back-mounted gas cylinder, in which, due to the arrangement of the vehicle's gas cylinder, interference airflow is easily formed at the back of the cab, thereby increasing driving wind resistance.

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

[0006] A back assembly, the back assembly including a guide unit for installation behind the vehicle cab and covering the vehicle gas cylinder, and a gas cylinder fixing unit located within the guide unit and having a bottom for connection to the vehicle frame. The guide unit includes a support frame and a diffuser-type guide cover located outside the support frame, the diffuser-type guide cover extending front to back and having one end for abutting the rear of the vehicle cab. The fixing unit includes a bottle placement rack connected to the support frame and having a plurality of spaces for placing vehicle gas cylinders.

[0007] A skirt assembly, the skirt assembly comprising two side skirts respectively located at both ends of the bottom of the diffuser and used to connect to the vehicle frame, with the tops of the side skirts abutting against the bottom of the diffuser;

[0008] Wherein, the supporting 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, and the side frames are provided with a plurality of groups of placement rack connecting units arranged along the height direction of the side frames, and the placement rack connecting units include placement rack connecting rods arranged on both sides of the wide side of the side frames, and the placement rack connecting rods extend horizontally toward the direction close to the bottle body placement rack and connect the side faces of the bottle body placement rack.

[0009] In one embodiment, a first connecting end is provided at one end of the placement rack connecting rod connected to the bottle placement rack.

[0010] 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.

[0011] 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 that match the first connecting ends.

[0012] In one embodiment, the supporting transverse plate is provided with a matching surface for matching with the outer curved surface of the vehicle gas cylinder.

[0013] 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.

[0014] 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 and the bottom of the diffuser air deflector.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0016] 1. The low wind resistance kit for gas tractors in this application is provided with a diffuser shroud with one end resting against the rear of the vehicle cab and covering the vehicle's gas cylinder. In combination with side skirts provided below the diffuser shroud, the kit can reduce airflow entering the sides of the vehicle when the vehicle is traveling at high speed, thereby preventing turbulence.

[0017] 2. In the low-drag kit for gas tractors of 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-type air guide cover in the air guide unit, which can improve the sealing of the kit itself and between the kit and the vehicle, further preventing airflow from flowing into the rear of the vehicle cab. At the same time, the abutment of the side skirts against the bottom of the diffuser-type air guide cover also means that the outer surface of the side skirts and the two sides of the diffuser-type 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;

[0018] 3. The diffusion-type deflector can also protect the vehicle gas cylinder, 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

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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 any creative work.

[0020] Figure 1 A schematic structural diagram of a low wind resistance kit for a gas tractor provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the support frame structure of a low wind resistance kit for a gas tractor provided in an embodiment of the present application;

[0022] 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;

[0023] Figure 4 A schematic diagram of the side skirt structure of a low wind resistance kit for a gas tractor provided in an embodiment of the present application;

[0024] 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.

[0025] In the figure: 1. Support frame; 101. Top frame; 102. Side frame; 103. Placement rack connecting rod; 104. First connection end; 2. Diffuser 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

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] An 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 of a gas tractor with a backpack-mounted gas cylinder, in which, due to the arrangement of the vehicle's gas cylinder, interference airflow is easily formed at the back of the cab, thereby increasing driving wind resistance.

[0028] The low wind resistance kit for gas tractors in this 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 of 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.

[0029] Specifically, the back assembly includes a guide unit for being installed 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 connecting to the vehicle frame.

[0030] The gas cylinder fixing unit is set inside the guide unit and is used to carry and fix the vehicle's gas cylinder, reducing the risk of the vehicle's gas cylinder being squeezed and bumped during driving. After assembly, the guide unit covers the gas cylinder fixing unit and the vehicle's gas cylinder. At the same time, the bottom of the gas cylinder fixing unit is connected to the top of the frame behind the vehicle's cab via a connector, and the gas cylinder fixing unit is connected to the guide unit. This means that the connection between the back assembly and the vehicle relies on the gas cylinder fixing unit, forming an integral structure. This connection not only enhances the overall stability of the back assembly and simplifies the installation process, but also allows the guide unit to be easily removed for maintenance or replacement when necessary, facilitating the installation and removal of the guide unit.

[0031] 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 is shown as follows: 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 the diffuser air guide cover 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 of the rear of the vehicle cab and achieves a smooth airflow transition.

[0032] The diffuser air deflector 2 is a key component located outside the support 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 trumpet-shaped as a whole 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 is completed, 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.

[0033] 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. At the same time, the liquefied natural gas inside the vehicle gas cylinder needs to control the temperature. The diffusion-type air deflector 2 can also effectively prevent sunlight from directly shining on the gas cylinder, causing the vehicle gas cylinder to heat up abnormally.

[0034] The gas cylinder fixing unit includes a connecting support frame 1 and a bottle body placement rack 3 with a plurality of vehicle gas cylinder placement spaces. Combined with the above description, the back component covers the outer periphery of the vehicle gas cylinder. Therefore, the back component has a certain width, and the bottle body placement rack 3 is used to place the vehicle gas cylinder. Therefore, in a possible embodiment, the bottle body placement rack 3 is the same width as the back component, and the two side edges of the bottle body placement rack 3 are connected to the support frame 1 through connecting parts, and the bottom of the bottle body placement rack 3 is connected to the vehicle frame through connecting parts. While ensuring the stable connection between the back component and the vehicle, the weight of the vehicle gas cylinder is effectively transferred to the vehicle frame.

[0035] At the same time, gas vehicles have various models and multiple 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.

[0036] Furthermore, the skirt panel assembly includes two side skirt panels 4 respectively located at the two ends of the bottom of the diffuser air deflector 2 and used to connect to the frame, and the top of the side skirt panels 4 is against the bottom of the diffuser air deflector 2. There are two groups of side skirt panels 4, which are connected to the two sides of the frame through connecting parts and are spaced a certain distance from the frame. After assembly is completed, the top of the side skirt panels 4 is 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, so as 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.

[0037] Further, Figure 2 This is a structural 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, which improves the convenience and flexibility of installation, and also improves the convenience of installation work.

[0038] In one possible embodiment, the top frame 101 includes two main support rods that face each other along the width of the vehicle, with a plurality of secondary support rods disposed between the two support rods and perpendicular to the main support rods. The secondary support rods are fixedly connected to the two main support rods at both ends to form a single unit. The structure of the side frames 102 can be similar to that 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 side frames 102; other structures are also possible and are not specifically limited here.

[0039] Furthermore, the side frame 102 is provided with several groups of placement rack connection units arranged along the height direction of the side frame 102, and each side frame 102 is provided with at least one group of placement rack connection units, and the placement rack connection units on the two side frames 102 are relatively arranged to respectively connect the two sides of the bottle body placement 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 placement rack connection units, and the three groups of placement 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 placement rack 3.

[0040] 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 diversion 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.

[0041] Specifically, the placement rack connection unit includes a placement rack connecting rod 103 arranged on both sides of the wide side of the side frame 102, and the placement rack connecting rod 103 extends horizontally toward the direction close to the bottle body placement rack 3 and connects the side faces of the bottle body placement rack 3. Each placement rack connection unit has two placement rack connecting rods 103. One end of the two placement rack connecting rods 103 in the same placement 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 placement rack connecting rods 103 are respectively used to connect the two sides of the wide side of the bottle body placement rack 3. In a possible embodiment, a stiffening rod is provided between one end of the two placement rack connecting rods 103 connected to the wide side of the side frame 102 to improve the overall structural stability of the placement rack connection unit.

[0042] Further, Figure 3 This is a structural diagram of a bottle placement rack 3 in a low wind resistance kit for a gas tractor provided in an embodiment of the present application, as 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 number of connecting holes are provided on the connecting iron plate for connecting parts (such as bolts, nuts, etc.) to pass through, 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.

[0043] Furthermore, the bottle rack 3 includes a support vertical plate 301 and a support horizontal plate 302 located in front of the support vertical plate 301 to form a storage space. The support vertical plate 301 is one of the main supporting structures of the bottle rack 3 and has sufficient strength and rigidity to withstand the weight of the vehicle gas cylinder and various forces during driving. The support horizontal plate 302 is located in front of the support vertical plate 301 and is connected to the support vertical plate 301 to form a storage space. It should be noted 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, allowing vehicle gas cylinders to be neatly arranged.

[0044] Specifically, in combination with the above description, the connection between the diversion unit and the vehicle relies on the bottle placement rack 3, and at the same time,

[0045] In addition to connecting the diversion unit, the bottle rack 3 also serves the important task of accommodating and securing the vehicle's gas cylinders. Vehicle gas cylinders typically store high-pressure gas, such as compressed natural gas or liquefied petroleum gas, which is used to power the vehicle. Therefore, the bottle rack 3 must possess sufficient strength and stability to ensure the safety and reliability of the vehicle's gas cylinders during driving. Therefore, the entire bottle rack 3 is constructed of wear-resistant metal for increased strength and durability, capable of withstanding greater loads and vibrations.

[0046] 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 restrictions are made in this 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 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.

[0047] 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.

[0048] Furthermore, in a possible embodiment, the bottle rack 3 also includes a diagonal support group, which includes two diagonal support rods, and the two ends of the diagonal support rods are respectively connected to the side of the support vertical plate 301 and the bottom of the support horizontal plate 302 to improve the overall stability and bearing capacity of the bottle rack 3.

[0049] Further, in combination with the above description, the bottle body rack 3 is used to connect with the vehicle 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 support vertical plate 301 and a support horizontal plate 302 located at the bottom away from both sides of the bottom of the support vertical plate 301, and a horizontal connecting plate is provided at the bottom of the connecting legs, and a number of threaded holes are provided on the horizontal connecting plate, so that a stable connection between the bottle body rack 3 and the vehicle frame is achieved through connecting bolts.

[0050] Furthermore, both sides of the supporting vertical plate 301 and the side surface of the supporting horizontal plate 302 away from the supporting vertical plate 301 are provided with a second connecting end 303 that matches 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.

[0051] 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 through physical constraints to prevent shaking during the vehicle's driving. 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 one possible embodiment 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 are not specifically limited in this 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.

[0052] Further, Figure 4 This is 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, as shown in FIG. Figure 4As shown, the side skirt panel 4 is provided with a frame connection unit on the inner side facing the frame, and the frame connection unit includes a plurality of connection brackets 5, and the plurality of connection brackets 5 are spaced apart 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 connectors. Each side skirt panel 4 includes an outer panel body and a plate body skeleton located on the inner side of the outer panel body. It should be noted here that the inner side of the outer panel body refers to a side facing the frame, and the connection bracket 5 is also located on the inner side of the side skirt panel 4. One end of the connection bracket 5 is mechanically connected to the plate body skeleton, and the other end extends horizontally and is mechanically connected to the frame, effectively fixing the side skirt panel 4 to the frame to prevent loosening or falling off due to vibration or impact. At the same time, the connection 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 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.

[0053] Furthermore, based on the stress on the side skirt panel 4 and the overall stability of the structure, in one possible embodiment, the number of connecting brackets 5 on the same side skirt panel 4 is at least two, which are located at the head and tail ends of the side skirt panel 4 respectively, to ensure that the side skirt panel 4 can be evenly distributed when subjected to stress, and to avoid damage or deformation of the side skirt panel 4 caused by excessive stress at a single point. The specific form of the connecting bracket 5 is not specifically limited in this application and can be flexibly adjusted according to different vehicle models, frame structures and the shape of the side skirt panel 4, so as to ensure a stable connection between the side skirt panel 4 and the frame.

[0054] The side skirts 4 can also play a certain protective role. They can prevent people from being rolled under the vehicle from the side, and prevent safety-related parts such as the vehicle's fuel tank, battery, and gas cylinder from being directly hit. They can also improve the overall appearance of the vehicle, protect the integrity of the vehicle body, and make the vehicle look neater.

[0055] Further, Figure 5 This is 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. Combined with the above description, the 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 the 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 method, 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.

[0056] The low wind resistance kit for gas tractors in the present application is provided with a guide unit, which includes a diffuser guide hood 2 with one end pressed against the rear of the vehicle cab and covering the outside of the vehicle's gas cylinder, and cooperates with the side skirts 4 provided below the diffuser guide hood 2, which can 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 turbulence in the airflow. At the same time, the guide unit is pressed against the rear of the vehicle cab, and the side skirts 4 are pressed against the bottom of the diffuser guide hood 2, and cooperates with the sealing unit 6, which can significantly improve the fuel efficiency and driving stability of the vehicle.

[0057] In the description of this application, it should be noted that the terms "upper" and "lower" and the like 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 this application and simplifying the description, and do not indicate or imply 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 this 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 an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0058] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0059] The above are merely specific embodiments of the present application to enable those skilled in the art to 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 may 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 rather is intended to conform to the widest scope consistent with the principles and novel features of the present application.

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 being installed 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 diffusion-type guide cover (2) located outside the support frame (1), the diffusion-type guide cover (2) being through-through from front to back and having one end for abutting 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 assembly, the skirt assembly comprising two side skirts (4) respectively located at two ends of the bottom of the diffuser air deflector (2) and used for connecting to the vehicle frame, and the tops of the side skirts (4) are abutted against the bottom of the diffuser air deflector (2); 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), and the side frames (102) are provided with a plurality of groups of placement rack connection units arranged along the height direction of the side frames (102), and the placement rack connection units comprise placement rack connection rods (103) arranged on both sides of the wide sides of the side frames (102), and the placement rack connection rods (103) extend horizontally toward the direction close to the bottle placement rack (3) and connect the side faces of the bottle placement rack (3).

2. A low wind resistance kit for a gas tractor as claimed in claim 1, 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).

3. A low wind resistance kit for a gas tractor as claimed in claim 2, 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) for forming a placement space.

4. A low wind resistance kit for a gas tractor as claimed in claim 3, characterized in that: Both sides of the supporting vertical plate (301) and the side surface of one end of the supporting horizontal plate (302) away from the supporting vertical plate (301) are provided with second connecting ends (303) that match the first connecting ends (104).

5. A low wind resistance kit for a gas tractor as claimed in claim 4, characterized in that: The supporting horizontal plate (302) is provided with a matching surface for matching the outer arc surface of the vehicle gas cylinder.

6. A low wind resistance kit for a gas tractor as claimed in claim 1, characterized in that: A frame connection unit is provided on the inner side of the side skirt plate (4) facing the frame, and the frame connection unit includes a plurality of connection brackets (5), and the plurality of connection brackets (5) are spaced apart along the length direction of the side skirt plate (4).

7. 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 support one side of the rear of the vehicle cab, and a sealing unit (6) is provided between the top of the side skirt (4) and the bottom of the diffuser air deflector (2).

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