Frame and motorcycle

Abstract

The frame comprises a main body support, a middle support and a side support, the main body support comprises a handle mounting frame, an oil tank mounting frame and a cushion mounting frame which are sequentially connected, the cushion mounting frame is connected with a suspension system support, and pneumatic springs are arranged on the two sides of the suspension system support. The middle support is connected to the rear half portion of the body support and comprises two pipe sets which are arranged in a bilateral symmetry mode, the rear ends of the pipe sets are used for installing a cushion of a vehicle body, the end portions of the rear ends of the pipe sets are connected with fixing pipes, the fixing pipes are connected with the two pipe sets respectively, and a supporting plate is arranged between the two pipe sets and used for supporting and installing a tail box of the vehicle body. The two side edge supports are connected to the two sides of the middle support respectively, each side edge support comprises two main beam pipes which are arranged in a bilateral symmetry mode, the main beam pipes are arranged in an arc shape, the rear ends of the main beam pipes are provided with horizontally-arranged installation parts, and the installation parts are located over the installation positions and provided with first installation plates.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycles, and in particular to a frame and a motorcycle. Background Art

[0002] With the continuous development of motorcycle technology, consumers have put forward higher requirements for the comfort, safety and functionality of motorcycles. As the core component of a motorcycle, the design of the frame directly affects the overall performance and riding experience of the motorcycle. Traditional frame design often focuses on basic load-bearing and driving functions, but has shortcomings in comfort, shock absorption effect and the convenience of installing additional equipment. Therefore, it is particularly important to develop a frame that can not only ensure structural strength, but also improve riding comfort and functional diversity. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a frame that can enhance the overall stability and load-bearing capacity of the frame, and also significantly improve the riding comfort and the installation flexibility of additional equipment.

[0004] The frame of the embodiment of the first aspect of the present invention comprises a main frame, an intermediate frame and a side frame. The main frame comprises a handlebar mounting frame, a fuel tank mounting frame and a seat cushion mounting frame connected in sequence from front to back, the seat cushion mounting frame is connected to a suspension system bracket, both sides of the suspension system bracket are provided with sliding columns, the sliding columns are provided with pneumatic springs, the top of the pneumatic springs are connected to and support the main frame, and the bottom is connected to the wheels. The intermediate frame is connected to the seat cushion mounting frame, the intermediate frame comprises two groups of pipe groups arranged symmetrically to each other, each group of the pipe groups comprises a front end and a rear end, the front end of the pipe group is provided with a connecting hole for connecting to the main frame, the rear end of the pipe group is used to install the seat cushion of the vehicle body, the end of the rear end of the pipe group is connected to a fixing pipe, the fixing pipe is respectively connected to the two groups of the pipe groups, a support plate is provided between the two groups of the pipe groups, and the support plate is used to support and install the tail box of the vehicle body. There are two side brackets, which are respectively connected to the two sides of the middle bracket. The side bracket includes two main beam tubes that are symmetrically arranged with each other. The main beam tubes are arranged in an arc shape to form a mounting position for accommodating the wheel installation at the bottom. The front end of the main beam tube is located at the lowest position, and a first connecting tube is provided. The first connecting tube connects the two main beam tubes and extends toward the side away from the mounting position to connect the main bracket. The rear end of the main beam tube has a horizontally arranged mounting portion, which is located directly above the mounting position. The mounting portion is provided with a first mounting plate, and the first mounting plate cooperates with the main beam tube to install the fender.

[0005] The frame according to the embodiment of the present invention has at least the following beneficial effects: the main frame includes a handlebar mounting frame, a fuel tank mounting frame and a seat mounting frame from front to back. A suspension system bracket is connected below the seat mounting frame, and sliding columns are arranged on both sides of the suspension system bracket, and pneumatic springs are installed on the sliding columns. The top of the pneumatic spring is connected to and supports the main frame, and the bottom is connected to the wheel. Such a design can effectively absorb vibration during driving and improve riding comfort. The middle bracket is connected to the bottom of the seat mounting frame and is composed of two groups of left-right symmetrical pipe groups. Each group of pipe groups includes a front end and a rear end, and a connecting hole is arranged at the front end for fixed connection with the main frame. The rear end is used to install the seat of the motorcycle, and the rear end end of each group of pipe groups is connected to a fixed pipe, and the two fixed pipes are respectively connected to the two groups of pipe groups, which enhances the stability of the middle bracket. In addition, a support plate is arranged between the two groups of pipe groups to support and install the tail box of the vehicle body, thereby increasing the storage space. A side bracket is provided on each side of the frame. Each side bracket is composed of two left-right symmetrical main beam tubes. The main beam tube is designed in an arc shape, and the bottom forms a mounting position for the wheel. The front end of the main beam tube is located at the lowest point and is provided with a first connecting tube. The first connecting tube connects the two main beam tubes and extends toward the side away from the mounting position to connect the main bracket, thereby enhancing the overall rigidity of the frame. A horizontal mounting portion is provided at the rear end of the main beam tube. The mounting portion is located just above the mounting position, and a first mounting plate is installed thereon. The first mounting plate cooperates with the main beam tube to facilitate the installation of a mud guard, effectively preventing mud and water splashing.

[0006] It is understandable that through the design of the suspension system bracket and pneumatic spring, the road vibration is effectively absorbed, and the stability and comfort of riding are improved. The ingenious design of the middle bracket and the side bracket not only increases the load-bearing capacity of the frame, but also improves the stability and rigidity of the overall structure. The design of the support plate facilitates the installation of the tail box and increases the storage space, while the first mounting plate on the side bracket facilitates the installation of the fender and improves the practicality of the vehicle. In addition, through the ingenious combination of the main bracket, the middle bracket and the side bracket, a stable triangular support system is formed, which is suitable for large-displacement three-wheeled motorcycles and greatly improves the overall stability of the vehicle body. The connection method between the components is reasonably designed, which simplifies the installation process, reduces the difficulty of installation, improves the assembly efficiency, and achieves multiple advantages such as stable structure, convenient installation, strong adaptability and lightweight.

[0007] According to some embodiments of the present invention, a first support rod is provided at the bottom of the rear end of the tube group, the first support rod is connected to the main bracket, the support plate is located between the first support rod and the fixed tube, a reinforcement rod is provided in the middle of the first support rod, the reinforcement rod is inclined toward the mounting plate and is connected to the tube group, and the reinforcement rod, the first support rod and the tube group form a triangular structure.

[0008] According to some embodiments of the present invention, a second support rod is further provided at the rear end of the tube group, and the second support rod is also used to connect to the main body support.

[0009] According to some embodiments of the present invention, a positioning protrusion is further provided between the two tube groups, the positioning protrusion is located between the first support rod and the second support rod, and the top of the positioning protrusion extends out of the top of the tube group to support and position the installation of the seat cushion.

[0010] According to some embodiments of the present invention, wing plates are connected to both sides of the support plate, the wing plates are perpendicular to the support plate and are located at the bottom of the support plate, the wing plates are triangular, and the two wing plates cooperate with the support plate to form a slot for quickly positioning and clamping between the two tube groups.

[0011] According to some embodiments of the present invention, a second mounting plate is provided at the rear end of the mounting portion, and two sides of the second mounting plate are respectively connected to the two main beam tubes, and the second mounting plate cooperates with the first mounting plate and the main beam tube to jointly support and install the fender.

[0012] According to some embodiments of the present invention, a second connecting tube is further provided on the main beam tube facing one side of the main support, the second connecting tube is located on the side of the installation position, the second connecting tube includes two transverse tubes arranged in a horizontal direction and a longitudinal tube connected between the two transverse tubes, and the transverse tube is arranged inclined downward toward one side of the tail end of the main beam tube.

[0013] According to some embodiments of the present invention, the transverse tube located on the upper side extends to the side away from the installation position and has a connecting portion, the connecting portion is used to connect the main support, and a reinforcement tube is also provided at the connection between the connecting portion and the longitudinal tube. The reinforcement tube is set at an angle to the longitudinal tube, and the end portion of the reinforcement tube is connected to the main support.

[0014] According to some embodiments of the present invention, a controller is further included, and the two pneumatic springs are electrically connected to the controller. The controller is used to obtain a steering signal and control the two pneumatic springs to perform lifting and lowering movements within a rated stroke, so that the main body bracket tends to a horizontal state.

[0015] A three-wheeled motorcycle according to an embodiment of the first aspect of the present invention comprises a vehicle body mounting frame as described in any one of the above items.

[0016] The three-wheeled motorcycle according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned body mounting frame, the three-wheeled motorcycle not only improves the overall performance and stability of the vehicle, but also enables the various components of the vehicle to fit together more closely, thereby improving the overall performance and service life of the vehicle, and through the design of the suspension system bracket and the pneumatic spring, effectively absorbs road vibrations, and improves the stability and comfort of riding. On the other hand, through the precise control of the pneumatic spring by the controller, the relative horizontal state of the main body bracket is maintained when the rider turns, thereby significantly improving the vehicle's handling stability and riding safety.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 is a schematic diagram of a frame according to an embodiment of the present invention; Figure 2 The figure is a schematic diagram of the connection between the middle bracket and the side bracket of the frame according to the embodiment of the present invention.

[0019] Figure numerals: main frame 100; handle mounting frame 110; fuel tank mounting frame 120; seat cushion mounting frame 130; suspension system bracket 140; pneumatic spring 141; intermediate bracket 200; pipe group 210; first support rod 211; reinforcement rod 212; second support rod 213; fixing rod 220; support plate 230; wing plate 231; positioning convex plate 240; side bracket 300; main beam tube 310; first mounting plate 311; second mounting plate 312; first connecting tube 320; second connecting tube 330; transverse tube 331; main tube 332; reinforcement tube 333. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the technical personnel in the relevant technical field can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution. In the description of the present invention, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the description of the present specification, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0024] Reference Figure 1 and Figure 2The present invention provides a frame, including a main frame 100, an intermediate frame 200 and a side frame 300. The main frame 100 includes a handlebar mounting frame 110, a fuel tank mounting frame 120 and a seat cushion mounting frame 130 which are sequentially connected from front to back, and the seat cushion mounting frame 130 is connected to a suspension system bracket 140, and both sides of the suspension system bracket 140 are provided with sliding columns, and the sliding columns are provided with pneumatic springs 141, and the top of the pneumatic spring 141 is connected to and supports the main frame 100, and the bottom is connected to the wheel. The middle bracket 200 is connected to the seat cushion mounting frame 130, and the middle bracket 200 includes two groups of tube groups 210 that are symmetrically arranged with each other. Each group of tube groups 210 includes a front end and a rear end, wherein the front end of the tube group 210 is provided with a connecting hole for connecting to the main bracket 100, and the rear end of the tube group 210 is used to install the seat cushion of the vehicle body. The end of the rear end of the tube group 210 is connected with a fixing pipe, and the fixing pipe is respectively connected to the two groups of tube groups 210. A support plate 230 is provided between the two groups of tube groups 210, and the support plate 230 is used to support and install the trunk of the vehicle body. Two side brackets 300 are provided, which are respectively connected to the two sides of the middle bracket 200. The side bracket 300 includes two main beam tubes 310 which are symmetrically arranged with each other. The main beam tube 310 is arranged in an arc shape to form a mounting position for accommodating the wheel installation at the bottom. The front end of the main beam tube 310 is located at the lowest position, and a first connecting tube 320 is provided. The first connecting tube 320 connects the two main beam tubes 310 and extends toward the side away from the mounting position to connect the main bracket 100. The rear end of the main beam tube 310 has a horizontally arranged mounting portion, which is located directly above the mounting position. The mounting portion is provided with a first mounting plate 311, and the first mounting plate 311 cooperates with the main beam tube 310 to install the fender.

[0025] In a specific embodiment, the main frame 100 includes a handlebar mounting frame 110, a fuel tank mounting frame 120 and a seat cushion mounting frame 130 from front to back. A suspension system bracket 140 is connected below the seat cushion mounting frame 130, and sliding columns are arranged on both sides of the suspension system bracket 140, and pneumatic springs 141 are installed on the sliding columns. The top of the pneumatic spring 141 is connected to and supports the main frame 100, and the bottom is connected to the wheel. Such a design can effectively absorb the vibration during driving and improve riding comfort. The intermediate frame 200 is connected to the bottom of the seat cushion mounting frame 130 and is composed of two groups of bilaterally symmetrical pipe groups 210. Each group of pipe groups 210 includes a front end and a rear end, and the front end is provided with a connecting hole for fixed connection with the main frame 100. The rear end is used to install the seat cushion of the motorcycle, and the rear end of each group of pipe groups 210 is connected to a fixed pipe, and the two fixed pipes are respectively connected to the two groups of pipe groups 210, which enhances the stability of the intermediate frame 200. In addition, a support plate 230 is provided between the two groups of pipes 210 for supporting the rear box of the vehicle body, thereby increasing the storage space. A side bracket 300 is provided on each side of the frame, and each side bracket 300 is composed of two left-right symmetrical main beam tubes 310. The main beam tubes 310 are designed in an arc shape, and the bottom forms a mounting position for wheel installation. The front end of the main beam tube 310 is located at the lowest point, and a first connecting tube 320 is provided. The first connecting tube 320 connects the two main beam tubes 310 and extends toward a side away from the mounting position, and is used to connect the main bracket 100, thereby enhancing the overall rigidity of the frame. A horizontal mounting portion is provided at the rear end of the main beam tube 310, and the mounting portion is located just above the mounting position, on which a first mounting plate 311 is installed. The first mounting plate 311 cooperates with the main beam tube 310 to facilitate the installation of a mud guard, effectively preventing mud and water splashing.

[0026] It is understandable that, through the design of the suspension system bracket 140 and the pneumatic spring 141, the road vibration is effectively absorbed, and the stability and comfort of riding are improved. The ingenious design of the middle bracket 200 and the side bracket 300 not only increases the load-bearing capacity of the frame, but also improves the stability and rigidity of the overall structure. The design of the support plate 230 provides convenience for the installation of the tail box and increases the storage space, while the first mounting plate 311 on the side bracket 300 facilitates the installation of the fender and improves the practicality of the vehicle. In addition, through the ingenious combination of the main bracket 100, the middle bracket 200 and the side bracket 300, a stable triangular support system is formed, which is suitable for large-displacement three-wheeled motorcycles and greatly improves the overall stability of the vehicle body. The connection method between the components is reasonably designed, which simplifies the installation process, reduces the difficulty of installation, improves the assembly efficiency, and achieves multiple advantages such as stable structure, convenient installation, strong adaptability and lightweight.

[0027] It should be noted that the frame proposed by the present invention also includes a control device that electrically connects the two pneumatic springs 141, and can obtain and process signals from the vehicle steering system in real time. When the rider performs a steering operation during driving, the steering signal will be transmitted to the controller. Based on the received signal, the controller quickly calculates the stroke adjustment amount of the pneumatic spring 141 required to keep the main support 100 in a horizontal state.

[0028] Subsequently, the controller sends instructions to the two pneumatic springs 141 to control them to perform lifting and lowering movements within the rated stroke. This adjustment process is intended to offset the body tilt caused by turning, so that the main support 100 and the driving components installed thereon remain in a relatively horizontal state. This not only helps to improve the rider's handling stability, but also reduces the discomfort caused by the body tilt to a certain extent. Through the precise control of the pneumatic spring 141 by the controller, the present invention can maintain the relative horizontal state of the main support 100 when the rider turns, thereby significantly improving the vehicle's handling stability and riding safety. The reduction in body tilt means that the lateral force and discomfort to which the rider is subjected when turning will also be reduced accordingly. This helps to improve the overall comfort and satisfaction of riding, realizes the intelligent control of the pneumatic spring 141, not only improves the handling stability and riding comfort, but also lays a solid foundation for the intelligent development of the frame.

[0029] It should be noted that, during implementation, the controller design must ensure that it can respond to steering signals accurately and quickly, and has sufficient processing power to accurately control the lifting and lowering movement of the pneumatic spring 141. At the same time, the selection of the pneumatic spring 141 must also meet the requirements of fast response and stable movement to ensure the effectiveness and reliability of the entire system.

[0030] Reference Figure 2 Specifically, a first support rod 211 is added to the bottom of the rear end of each tube group 210. These first support rods 211 are connected to the main support 100, providing additional support for the intermediate support 200 and enhancing the stability of the structure. At the same time, the support plate 230 is cleverly designed between the first support rod 211 and the fixed tube to form a stable support area for installing and supporting the seat cushion of the vehicle body. In order to further enhance the strength and stability of the structure, we set a reinforcement rod 212 in the middle of the first support rod 211. These reinforcement rods 212 are tilted toward the mounting plate and connected to the tube group 210, forming a triangular structure together with the first support rod 211 and the tube group 210. This triangular structural design not only improves the overall load-bearing capacity, but also effectively disperses the stress, making the entire mounting frame more stable and durable, and able to better cope with various complex road conditions and driving conditions.

[0031] Furthermore, a second support rod 213 is added to the rear end of each tube group 210. These second support rods 213 are also used to connect the main frame 100, and together with the first support rod 211, provide more comprehensive support for the intermediate frame 200, improve the stability of the structure, and enable the mounting frame to better adapt to seat cushions of different sizes and weights, improve the comfort and riding experience of the vehicle, and further enhance the supporting capacity of the intermediate frame 200, so that the mounting frame can more stably support the seat cushion and other vehicle body parts.

[0032] Furthermore, a positioning convex plate 240 is added between the two tube groups 210. The positioning convex plate 240 is located between the first support rod 211 and the second support rod 213, and its top extends out of the top of the tube group 210, and is used to support and position the installation of the seat cushion, which not only makes the installation of the seat cushion more convenient and quick, but also improves the stability and comfort of the seat cushion, and provides a stable and reliable installation platform for the seat cushion.

[0033] In some embodiments, wing plates 231 are added to both sides of the support plate 230. The wing plates 231 are perpendicular to the support plate 230 and are located at the bottom thereof, forming a triangular design. The two wing plates 231 and the support plate 230 together form a slot for quickly positioning and connecting between the two tube groups 210, which not only simplifies the installation process of the support plate 230, making the installation of the support plate 230 more convenient and quick, but also improves its stability and load-bearing capacity.

[0034] Reference Figure 2 Specifically, in the side bracket 300, a second mounting plate 312 is added to the rear end of the mounting portion. The second mounting plate 312 is connected to the two main beam tubes 310, and together with the first mounting plate 311 and the main beam tube 310, supports and mounts the fender. This design not only improves the stability and load-bearing capacity of the fender, but also makes the installation of the fender more convenient and quick.

[0035] Furthermore, a second connecting tube 330 is added to the main beam tube 310 on the side facing the main support 100. These second connecting tubes 330 are located on the side of the installation position, and include two horizontal tubes 331 arranged in the horizontal direction and a longitudinal tube connected between the two horizontal tubes 331. The horizontal tube 331 is arranged downwardly at a side facing the tail end of the main beam tube 310, so that the connection part can be better connected to the main support 100 and the stability of the connection is improved.

[0036] Furthermore, the transverse tube 331 on the upper side of the second connecting tube 330 extends to the side away from the mounting position to form a connecting portion for connecting the main frame 100. At the same time, a reinforcing tube 333 is added at the connection between the connecting portion and the longitudinal tube. These reinforcing tubes 333 are arranged at an angle with the longitudinal tube, and their ends are connected to the main frame 100. The connection strength between the second connecting tube 330 and the main frame 100 is further enhanced, and the overall stability of the mounting frame is improved.

[0037] Reference Figure 1 It should be noted that the main frame 100 includes a handle mounting frame 110, a fuel tank mounting frame 120 and a seat mounting frame 130 which are connected in sequence from front to back. The intermediate frame 200 is connected to the seat mounting frame 130, and the structure of the entire mounting frame is more compact and reasonable, and it is convenient to install and disassemble various components.

[0038] The second aspect of the present invention also proposes a three-wheeled motorcycle, especially a large-displacement three-wheeled motorcycle, including a body mounting frame as described in any of the above items. By adopting the above-mentioned body mounting frame, this three-wheeled motorcycle not only improves the overall performance and stability of the vehicle, but also enables the various components of the vehicle to fit together more closely, thereby improving the overall performance and service life of the vehicle, and through the design of the suspension system bracket 140 and the pneumatic spring 141, effectively absorbs road vibrations and improves the stability and comfort of riding. On the other hand, through the precise control of the pneumatic spring 141 by the controller, the relative horizontal state of the main frame 100 is maintained when the rider turns, thereby significantly improving the vehicle's handling stability and riding safety.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A frame, characterized in that: include: The main body bracket comprises a handlebar mounting bracket, a fuel tank mounting bracket and a seat cushion mounting bracket which are sequentially connected from front to back, the seat cushion mounting bracket is connected to a suspension system bracket, both sides of the suspension system bracket are provided with sliding columns, the sliding columns are provided with pneumatic springs, the top of the pneumatic springs are connected to and support the main body bracket, and the bottom is connected to the wheels; The middle bracket is connected to the cushion mounting frame, and the middle bracket includes two groups of tube groups that are symmetrically arranged with each other, and each group of the tube groups includes a front end and a rear end, wherein the front end of the tube group is provided with a connection hole for connecting to the main bracket, and the rear end of the tube group is used to install the seat cushion of the vehicle body, and the end of the rear end of the tube group is connected with a fixing tube, and the fixing tube is respectively connected to the two groups of the tube groups, and a support plate is provided between the two groups of the tube groups, and the support plate is used to support and install the tail box of the vehicle body; There are two side brackets, which are respectively connected to the two sides of the middle bracket. The side brackets include two main beam tubes that are symmetrically arranged with each other. The main beam tubes are arranged in an arc shape to form a mounting position for accommodating the wheel installation at the bottom. The front end of the main beam tube is located at the lowest position, and a first connecting tube is provided. The first connecting tube connects the two main beam tubes and extends toward the side away from the mounting position to connect the main bracket. The rear end of the main beam tube has a horizontally arranged mounting portion, which is located directly above the mounting position. The mounting portion is provided with a first mounting plate, and the first mounting plate cooperates with the main beam tube to install the fender.

2. The vehicle body mounting bracket according to claim 1, characterized in that: A first support rod is provided at the bottom of the rear end of the tube group, the first support rod is connected to the main support, the support plate is located between the first support rod and the fixed tube, a reinforcement rod is provided in the middle of the first support rod, the reinforcement rod is inclined toward the mounting plate and connected to the tube group, and the reinforcement rod, the first support rod and the tube group form a triangular structure.

3. The vehicle body mounting bracket according to claim 2, characterized in that: A second support rod is also provided at the rear end of the tube group, and the second support rod is also used to connect the main body support.

4. The vehicle body mounting bracket according to claim 3, characterized in that: A positioning convex plate is also provided between the two tube groups, the positioning convex plate is located between the first support rod and the second support rod, and the top of the positioning convex plate extends out of the top of the tube group to support and position the installation of the seat cushion.

5. The vehicle body mounting bracket according to claim 4, characterized in that: Wing plates are connected to both sides of the support plate, the wing plates are perpendicular to the support plate and are located at the bottom of the support plate, the wing plates are triangular, and the two wing plates cooperate with the support plate to form a slot for quickly positioning and clamping between the two tube groups.

6. The vehicle body mounting bracket according to claim 4, characterized in that: A second mounting plate is provided at the rear end of the mounting portion, and two sides of the second mounting plate are respectively connected to the two main beam tubes, and the second mounting plate cooperates with the first mounting plate and the main beam tube to jointly support and install the fender.

7. The vehicle body mounting bracket according to claim 1, characterized in that: A second connecting tube is also provided on the main beam tube facing the side of the main support, and the second connecting tube is located on the side of the installation position. The second connecting tube includes two transverse tubes arranged in a horizontal direction and a longitudinal tube connected between the two transverse tubes. The transverse tube is arranged inclined downward toward one side of the tail end of the main beam tube.

8. The vehicle body mounting bracket according to claim 7, characterized in that: The transverse tube located on the upper side extends to the side away from the installation position and has a connecting portion, which is used to connect the main support. A reinforcement tube is also provided at the connection between the connecting portion and the longitudinal tube. The reinforcement tube is arranged at an angle to the longitudinal tube, and its end is connected to the main support.

9. The frame according to claim 1, characterized in that: It also includes a controller, and the two pneumatic springs are electrically connected to the controller. The controller is used to obtain a steering signal and control the two pneumatic springs to perform lifting and lowering movements within a rated stroke, so that the main body bracket tends to a horizontal state.

10. A three-wheeled motorcycle, characterized in that: Comprising the vehicle body mounting bracket as claimed in claim 9.

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