CN113120132A

CN113120132A - Externally hung connected front double-wheel device with three inverted wheels and fork type swing arm independent suspension

Info

Publication number: CN113120132A
Application number: CN202010056741.7A
Authority: CN
Inventors: 吕榕志
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2021-07-16

Abstract

The invention discloses an externally hung and connected front double-wheel device with three inverted wheels and a fork type swing arm independent suspension. The device comprises a connecting assembly, a steering handle, swing arms on the left side and the right side, a front wheel fixing support, a spring seat, a limiting angle positioning sheet, an upper three-star connecting piece, a lower three-star connecting piece, an upper three-star structure, a lower three-star structure with a main shaft and an auxiliary shaft, a tightening bolt assembly with a bearing, a connecting ball head, an adjusting swing arm, an adjusting screw rod, a brake caliper, a brake disc, a bicycle bell assembly and a tire. And the connection connecting rod welded on the middle shaft fixing column is used for connecting the fork type swing arm independent suspension with the upper three constellations of the steering shaft and the lower three constellations with the main and auxiliary shafts. The double front wheels of the reverse tricycle are placed on the outer sides of the left and right front wheel fixing supports of the fork type swing arm independent suspension, and are connected through tightening bolts by using wheel bells. After the components are connected, the fork type swing arm independent suspension and the double front wheels can do synchronous all-directional axial steering motion with the steering handle, and when the independent suspension does deformation motion, the double front wheels also do proper up-and-down motion along with the independent suspension.

Description

Externally hung connected front double-wheel device with three inverted wheels and fork type swing arm independent suspension

Technical Field

The invention relates to the technical field of inverted three wheels, in particular to an externally hung and connected inverted three-wheel front double-wheel device of a lower independent suspension, which can swing left and right and can automatically return to positive balance.

Background

The inverted three-wheeled (including electric) motorcycle is a novel product, has better stable and safe trafficability than a two-wheeled motorcycle in a complex terrain environment, and particularly has stronger grip on the ground of a turning tire than the two-wheeled motorcycle. Compared with a four-wheel motorcycle, the reverse three-wheel (including electric) motorcycle is obviously simpler in structure and lower in cost, and is very popular with people in recent years.

Such as a standard inverted motor tricycle in france, the steering of which is achieved by electric and mechanical control of the front wheels. But the maneuverability is complex, the cost is high, and the driving is not easy to be habituated to common drivers. The domestic double front wheel assembly of Jili inverted tricycle applies the technology of four-wheel beach vehicle to it, needs the wheel track width of two-wheel great, just can ensure the stability of automobile body, and the road surface of generally narrow is difficult for passing through.

In general, the inverted motor tricycle generally adopts a left-right front double-wheel shock absorber to reduce the impact of a road surface on a vehicle body, has no vehicle body side-leaning self-aligning balancing device, and has low safety and stability when passing through a rugged road surface.

The lateral-tilting deformation device arranged in the common inverted motor tricycle is directly assembled at the lower part of a steering mechanism, can occupy the space for assembling wheels, can only design and use small-sized wheels as front double wheels, and cannot use various large-sized wheels.

Disclosure of Invention

In order to overcome the problems in the common inverted tricycle, reduce the processing cost and simplify the production process, the invention provides a product which is mechanically and simply operated: an externally hung and connected fork type swing arm independent suspension inverted three-wheel front double-wheel device. The fork type swing arm independent suspension is added into the system, the fork type swing arm independent suspension is used for cars, the cars can return to normal balance and the axisymmetric movement is carried out on two sides under the intervention of a central axis, the front wheel fixing support in the independent suspension is connected with tires, so that the left tires and the right tires of the inverted tricycle can move stably, the grabbing force on the ground can be increased when the bodies of the inverted tricycle roll by the front double wheels under the action force of a balance spring, and the cars can safely and stably pass through various uneven road surfaces. Because the fork type swing arm independent suspension in the device is not directly arranged on a steering mechanism, the invention provides a brand-new steering mechanism with main and auxiliary double-shaft steering for connecting with the independent suspension. After the technical scheme is adopted, the independent suspension is connected with the steering mechanism with the main shaft and the auxiliary shaft through the connecting rod, the independent suspension is driven by the rear wheel, the steering handle controls the front parallel two wheels to steer, the inverted motor tricycle can run perpendicularly to the ground or obliquely with the ground under the passive acting force of the uneven road surface on the tire and the active acting force of the driver on the body steering handle. When the inverted motor tricycle stops when meeting a red light through an intersection in normal running, a driver can support the motorcycle body to balance without feet or a motorcycle body support, and when the motorcycle stops, the motorcycle body does not fall down without being supported by the support under the condition that the motorcycle body is basically vertical to the ground. When the motorcycle is driven in a straight line, the motorcycle is supported by the front double wheels, so that the motorcycle is more stable, the front double wheels have higher ground grabbing force in the turning process, the turning speed can be increased, and the motorcycle can safely and stably pass through a turning road section. The steering angle and speed can be controlled by changing the change of the center of gravity during operation and control. The system is suitable for all motorcycles to be changed into inverted motorcycles which can be safely driven without changing the length, width, height and tire size of the prototype motorcycle. The technical scheme can also be applied to four-wheel (including electric) motorcycles or four-wheel portable motor vehicles and electric reverse tricycles.

In order to achieve the purpose, the invention adopts the technical scheme that: the device is formed by connecting a steering mechanism, a connecting rod, an independent suspension and a tire. The steering main shaft bearing device comprises a connecting metal component, a lower end bearing 16 of the steering main shaft, an upper end bearing 17 of the steering main shaft, an upper end bearing seat 18 of the steering main shaft and an upper end bearing 19 of the steering main shaft are tightened on a steering pipe 13 of a vehicle head by a steering main shaft bearing tightening nut 7 through a lower three-star steering main shaft 15 with a lower three-star steering main shaft 10 of a main auxiliary shaft. The upper three-star base 9 is positioned on the upper end of the direction pipe of the vehicle head through a main and auxiliary shaft with a main and auxiliary shaft and a lower three-star auxiliary shaft adjusting nut 8, and then is tightened through a lower three-star auxiliary shaft tightening nut 5 and a lower three-star steering main shaft tightening nut 14. A direction handle fixing seat is preset on the upper three constellations, and a direction handle 1 is fixed on the upper three constellations through a direction handle tightening bolt 2 and a direction handle tightening press block 3. The connection of the above components constitutes the steering mechanism. The fork type swing arm independent suspension is formed by connecting a left upper fork swing arm 20, a right upper fork swing arm 21, a left adjusting swing arm 22, a right adjusting swing arm 23, a left lower fork swing arm 24, a right lower fork swing arm 25 and a middle shaft fixing column 26 through a tightening bolt assembly 35 with a bearing. Wherein the bearing 45 with bearing tightening bolt assembly is placed in the motion fulcrum hole of each swing arm. The angle limiting positioning piece 31 and the upper end seat of the return spring are welded on the middle shaft fixing column, the lower end seat of the return spring is welded on the left lower swing arm and the right lower swing arm, the return spring 29 is placed on the return spring seat 30, the balance spring seat 27 is welded on the upper ends of the left upper swing arm and the right upper swing arm, and the balance spring 28 is arranged on the balance spring seat. Wherein the adjusting screw rod 37 is welded at the outer end of the adjusting swing arm and is connected with the left front wheel fixing bracket 32 or the right front wheel fixing bracket 33. The connecting ball head 34 is connected with the left and right front wheel fixing brackets through the outer ends of the fork type swing arms on the left, right, upper and lower sides. The left and right front wheels 39 are placed on the outer side of the left and right front wheel fixing brackets, and are connected with a wheel bell assembly 40 with a brake disc 43 by wheel bell tightening bolts 41. The fork type swing arm independent suspension and the steering mechanism are connected through a connecting rod. The upper end of the connecting rod is connected with the upper three-constellation of the steering mechanism and the lower three-constellation with the main and auxiliary shafts through welding upper and lower three-constellation connecting pieces. The lower end of the connecting rod is welded with a middle shaft fixing column in the independent suspension through a set angle. The appearance of the connecting rod is of a special-shaped structure, the upper square tube and the lower square tube are parallel, the middle connecting square tube is just placed below the lower three-star steering main shaft with the main shaft and the auxiliary shaft, and the upper square tube and the lower square tube are parallel to the lower three-star steering main shaft.

According to the scheme, the angle limiting positioning piece is preset in the middle shaft fixing column, so that the vehicle body is controlled at 30 degrees when the vehicle turns and heels, and the vehicle is more stable and safer to drive.

Drawings

Fig. 1 is a front perspective view of an externally hung and connected front double-wheel device with a fork type swing arm independent suspension and an inverted three-wheel.

Fig. 2 is a rear perspective view of an externally hung and connected front double-wheel device with a fork type swing arm independent suspension and an inverted three-wheel.

Fig. 3 is a structural diagram of an externally hung and connected front double-wheel device with a reverse three-wheel with a fork type swing arm independent suspension.

Fig. 4 is a perspective view of a steering mechanism in an externally-hung and connected front three-wheel device with a fork type swing arm independent suspension fork and an inverted three-wheel.

Fig. 5 is a structural diagram of a steering mechanism in an externally-hung and connected front double-wheel device with a fork type swing arm independent suspension fork type inverted three wheels.

Fig. 6 is a perspective view of a fork type swing arm independent suspension in a three-wheel inverted front device with an externally-hung connection type lower fork type swing arm independent suspension.

Fig. 7 is a structural diagram of a fork type swing arm independent suspension in a three-wheel inverted front double-wheel device with an externally-hung connection type lower fork type swing arm independent suspension.

Fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7 are external hanging type lower-mounted fork type swing arm independent suspension inverted three-wheel front double-wheel device, wherein: 1. a direction handle; 2. tightening the bolt by the handlebar; 3. the direction handle tightens the pressing block; 4. a lower three-star countershaft; 5. tightening nuts of the lower three-star auxiliary shaft; 6. upper and lower three-star connection bolts; 7. tightening a nut of the steering main shaft bearing; 8. a lower three-star auxiliary shaft adjusting nut; 9. the upper three constellations; 10. a lower three-constellation with main and auxiliary axes; 11. an upper three-star connecting piece; 12. a lower three-star connector; 13. a headstock direction tube; 14. tightening nuts of the lower three-star steering main shaft; 15. a lower three-star steering main shaft; 16. a steering main shaft lower end bearing; 17. a bearing seat at the lower end of the steering main shaft; 18. a bearing seat at the upper end of the steering main shaft; 19. a bearing at the upper end of the steering main shaft; 20. the left side is forked into a swing arm; 21. the right side is forked into a swing arm; 22. the swing arm is adjusted on the left side; 23. the swing arm is adjusted on the right side; 24. a left lower fork swing arm; 25. the right lower fork swing arm; 26. a middle shaft fixing column; 27. a balance spring seat; 28. a balance spring; 29. a return spring; 30. a return spring seat; 31. a limiting angle positioning sheet; 32. a left front wheel fixing bracket; 33. a right front wheel fixing bracket; 34. connecting a ball head; 35. tightening the bolt assembly with the bearing; 36. a ball head connecting bolt; 37. adjusting the screw rod; 38. a brake caliper; 39. a front wheel; 40. a wheel bell assembly; 41. tightening bolts of the wheel bells; 42. connecting the connecting rod; 43. a brake disc; 44. tightening the connecting hole of the wheel bell; 45. and a bearing.

Detailed description of the preferred embodiments

The preferred mode of the invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the externally hung and connected front double-wheel device with the lower fork type swing arm independent suspension for inverting the three wheels is formed by connecting a steering mechanism, a connection connecting rod, an independent suspension and tires. The steering main shaft bearing device comprises a connecting metal component, a lower end bearing 16 of the steering main shaft, an upper end bearing 17 of the steering main shaft, an upper end bearing seat 18 of the steering main shaft and an upper end bearing 19 of the steering main shaft are tightened on a steering pipe 13 of a vehicle head by a steering main shaft bearing tightening nut 7 through a lower three-star steering main shaft 15 with a lower three-star steering main shaft 10 of a main auxiliary shaft. The upper three-star base 9 is positioned on the upper end of the direction pipe of the vehicle head through a main and auxiliary shaft with a main and auxiliary shaft and a lower three-star auxiliary shaft adjusting nut 8, and then is tightened through a lower three-star auxiliary shaft tightening nut 5 and a lower three-star steering main shaft tightening nut 14. A direction handle fixing seat is preset on the upper three constellations, and a direction handle 1 is fixed on the upper three constellations through a direction handle tightening bolt 2 and a direction handle tightening press block 3. The connection of the above components constitutes the steering mechanism. The fork type swing arm independent suspension is formed by connecting a left upper fork swing arm 20, a right upper fork swing arm 21, a left adjusting swing arm 22, a right adjusting swing arm 23, a left lower fork swing arm 24, a right lower fork swing arm 25 and a middle shaft fixing column 26 through a tightening bolt assembly 35 with a bearing. Wherein the bearing 45 with bearing tightening bolt assembly is placed in the motion fulcrum hole of each swing arm. The angle limiting positioning piece 31 and the upper end seat of the return spring are welded on the middle shaft fixing column, the lower end seat of the return spring is welded on the left lower swing arm and the right lower swing arm, the return spring 29 is placed on the return spring seat 30, the balance spring seat 27 is welded on the upper ends of the left upper swing arm and the right upper swing arm, and the balance spring 28 is arranged on the balance spring seat. Wherein the adjusting screw rod 37 is welded at the outer end of the adjusting swing arm and is connected with the left front wheel fixing bracket 32 or the right front wheel fixing bracket 33. The connecting ball head 34 is connected with the left and right front wheel fixing brackets through the outer ends of the fork type swing arms on the left, right, upper and lower sides. The left and right front wheels 39 are placed on the outer side of the left and right front wheel fixing brackets, and are connected with a wheel bell assembly 40 with a brake disc 43 by wheel bell tightening bolts 41.

A lower three-star steering main shaft and a lower three-star auxiliary shaft 4 are preset on a lower three-star constellation with a main auxiliary shaft in the externally-connected lower fork type swing arm independent suspension inverted three-wheel front double-wheel device, the two shafts are arranged in parallel and are vertically welded on an original bottom plate, the lower three-star steering main shaft is connected with a vehicle head direction pipe, and the lower three-star auxiliary shaft is used for reinforcing and fixing the upper three-star constellation of the vehicle head direction pipe and has a positioning function. The lower end of the connection connecting rod is welded on a middle shaft fixing column of the fork type swing arm independent suspension, the upper end of the connection connecting rod is welded with an upper three-star connecting piece 11 and a lower three-star connecting piece 12 which are used for connecting with an upper three-constellation on a steering shaft and a lower three-constellation seat with a main shaft and an auxiliary shaft of a motorcycle in a direction handle, and the upper three-star connecting piece, the upper three-constellation on the steering shaft and the lower three-constellation with the main shaft and the auxiliary shaft are provided with four bolt holes which can be tightened and connected by eight upper and lower three-star connection bolts.

The three shaft hole points on the middle shaft fixing column in the externally-hung and connected fork type swing arm independent suspension inverted three-wheel front double-wheel device are arranged on the vertical center line of the middle shaft fixing column in the same straight line, the shaft hole radiuses are the same and are arranged from top to bottom, the first shaft hole is used for being connected with bearing holes of a left upper fork swing arm and a right upper fork swing arm, and the other ends of the left upper fork swing arm and the right upper fork swing arm are connected with a connecting ball head and then connected with a left front wheel fixing. The second shaft hole is used for connecting the bearing holes of the left and right adjusting swing arms, the other end of the adjusting swing arm is connected with the front wheel fixing support on the left and right sides after being welded with the adjusting screw rod, and the third shaft hole is used for connecting the bearing holes of the left and right lower fork swing arms. The other end of the left lower fork swing arm and the right lower fork swing arm are connected with the connecting ball head and then connected with the left front wheel fixing support and the right front wheel fixing support. And bearing holes of the swing arm for connecting with the middle shaft fixing column are the same in size.

The front wheel fixing supports on the left side and the right side of the externally-hung and connected fork type swing arm independent suspension inverted three-wheel front double-wheel device are respectively provided with an upper ball head connecting hole and a lower ball head connecting hole, a front adjusting screw rod connecting hole and a rear adjusting screw rod connecting hole, and a wheel bell tightening connecting hole 44 for connecting with wheels. Two connecting holes which are arranged up and down and connected with the connecting ball heads are arranged on the left front wheel fixing bracket and the right front wheel fixing bracket, and the hole diameters are the same. Two connecting holes which are arranged front and back and connected with the swing arm adjusting screw rods are arranged, and the hole radiuses are the same. Brake callipers 38 have been attached for mating with a brake disc in the wheel bell assembly. The front wheel fixing supports on the left side and the right side are similar in appearance but all parameters are the same, and the front wheel fixing supports are placed in a left-right mode and cannot be used in a mixed mode. Under the action of external force, the left and right front wheel fixing supports can independently move up and down or synchronously move up and down in axial symmetry at two sides. The left and right double front wheels are placed on the outer sides of the left and right front wheel fixing supports, and the wheels and the front wheel fixing supports are connected together through wheel bell tightening bolts through wheel bell tightening connecting holes.

The distances from the connecting holes of the middle shaft fixing column in the upper fork swing arm and the lower fork swing arm at the left side and the right side in the externally-hung connected fork type swing arm independent suspension inverted three-wheel front double-wheel device to the connecting holes of the front wheel fixing bracket are the same. The left upper fork swing arm and the right lower fork swing arm are identical. The left and right swing arms are just similar but not identical in shape. The distances from the connecting holes of the middle shaft fixing column in the adjusting swing arms at the left side and the right side to the front wheel fixing supports at the left side and the right side are the same, and the adjusting swing arms at the left side and the right side are only similar in shape and are not completely the same.

The upper ends of the left and right upper fork swing arms in the externally-hung connected fork type swing arm independent suspension inverted three-wheel front double-wheel device are provided with balance springs for balancing and assisting the left and right front wheel fixing supports. When the swing arm moves, the front wheel fixing support is driven to move up and down, the upper fork swing arm has corresponding acting force on the balance spring, and the other front wheel fixing support which is symmetrical to the shaft is correspondingly acted in the opposite direction. No matter the swing arm on the left or right moves up and down independently or simultaneously, the fork type swing arm can not directly push the swing arm on the other side, and only can exert acting force on the swing arm on the other side with axial symmetry through the balance spring.

Four connecting ball heads on the upper fork type swing arm and the lower fork type swing arm on the left side and the right side in the externally-hung connected lower fork type swing arm independent suspension inverted three-wheel front double-wheel device are connected and fixed through ball head connecting bolts 36 and then are connected with front wheel fixing supports on the left side and the right side, and the inclination angle of the front wheel can be adjusted by adjusting the positions of the connecting ball heads, so that the double front wheels can stably run perpendicular to the ground.

The external hanging and connecting lower fork type swing arm independent suspension inverted three-wheel front double-wheel device is characterized in that a front adjusting screw rod and a rear adjusting screw rod are respectively welded at each side of the outer ends of the adjusting swing arms at the left side and the right side, and the front adjusting screws are used for adjusting the front speed of the front wheels, so that the front double wheels are more stable in steering and driving and are easier to control.

The fork type swing arms on the left side and the right side in the externally-connected fork type swing arm independent suspension inverted three-wheel front double-wheel device with the lower fork type swing arm are identical in length, the adjusting swing arms on the left side and the right side are identical in length, the distances from balance spring seats on the two sides to a center shaft fixing column connecting hole of an upper fork swing arm are identical, the left return spring and the right return spring are identical in parameter, the system can swing left and right under the action of external force to movably deform, and when the external force stops acting, the system.

The angle limiting positioning piece of the externally-connected reverse three-wheel front double-wheel device of the lower fork type swing arm independent suspension is welded on the middle shaft fixing column, the position of the angle limiting positioning piece is shown in the lower portion of the upper fork type swing arm and the upper portion of the lower fork type swing arm, a limiting angle is preset, and the deformation space of the fork type swing arm in the fork type swing arm independent suspension and the deformation movement range of the front wheel fixing support can be limited. The safe control and running of the two wheels in a reasonable side-tipping angle before the reverse three wheels are ensured.

The fork type swing arm independent suspension in the externally-hung and connected fork type swing arm independent suspension inverted three-wheel front double-wheel device is connected with a steering mechanism through a connecting rod. The upper end of the connecting rod is connected with the upper three-constellation of the steering mechanism and the lower three-constellation with the main and auxiliary shafts through welding upper and lower three-constellation connecting pieces. The lower end of the connecting rod is welded with a middle shaft fixing column in the independent suspension through a set angle. The appearance of the connecting rod is of a special-shaped structure, the upper square tube and the lower square tube are parallel, the middle connecting square tube is just placed below the lower three-star steering main shaft with the main shaft and the auxiliary shaft, and the upper square tube and the lower square tube are parallel to the lower three-star steering main shaft. The welding point of the lower end of the connecting rod and the middle shaft fixing column can be moved up and down to a proper position for positioning welding when aiming at a specific vehicle type. The device is suitable for all two-wheeled motorcycles to be changed into novel inverted three-wheeled motorcycles under the condition of not changing the length, width and height of the original motorcycle and the size of tires.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone with the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present application, fall within the protection scope of the present invention.

Claims

1. The utility model provides a two rounds of devices before going into of fork swing arm independent suspension of putting down of external connection, its characterized in that: the device is formed by connecting a steering mechanism, a connecting rod, an independent suspension and a tire. The steering main shaft steering device comprises a lower three-star steering main shaft (15) which is connected with a metal component and is provided with a lower three-star steering main shaft (10) of a main shaft and an auxiliary shaft, wherein a steering main shaft lower end bearing (16), a steering main shaft lower end bearing seat (17), a steering main shaft upper end bearing seat (18) and a steering main shaft upper end bearing (19) are tightened on a headstock direction pipe (13) by a steering main shaft bearing tightening nut (7). The upper three-star constellation (9) is positioned at the upper end of the steering tube of the vehicle head through a main and auxiliary shaft with a main and auxiliary shaft and a lower three-star auxiliary shaft adjusting nut (8), and then is tightened by a lower three-star auxiliary shaft tightening nut (5) and a lower three-star steering main shaft tightening nut (14). A direction handle fixing seat is preset on the upper three constellations, and a direction handle (1) is fixed on the upper three constellations through a direction handle tightening bolt (2) and a direction handle tightening pressing block (3). The connection of the above components constitutes the steering mechanism.

The fork type swing arm independent suspension is formed by connecting a left upper fork swing arm (20), a right upper fork swing arm (21), a left lower fork swing arm (24), a right lower fork swing arm (25), a left adjusting swing arm (22), a right adjusting swing arm (23) and a middle shaft fixing column (26) through a tightening bolt assembly (35) with a bearing. Wherein, a bearing (45) with a bearing tightening bolt assembly is arranged in a movement fulcrum hole of each swing arm. The angle limiting positioning piece (31) and an upper end seat of a return spring are welded on the middle shaft fixing column, a lower end seat of the return spring is welded on the left lower swing arm and the right lower swing arm, the return spring (29) is placed on a return spring seat (30), a balance spring seat (27) is welded on the upper ends of the left upper swing arm and the right upper swing arm, and a balance spring (28) is arranged on the balance spring seat. Wherein the adjusting screw rod (37) is welded at the outer end of the adjusting swing arm and is connected with the left front wheel fixing bracket (32) or the right front wheel fixing bracket (33). The connecting ball head (34) is connected with the left and right front wheel fixing brackets after being connected with the outer ends of the fork type swing arms on the left, right, upper and lower sides. The left front wheel (39) and the right front wheel (39) are placed on the outer sides of the left front wheel fixing bracket and the right front wheel fixing bracket, and a wheel bell tightening bolt (41) is connected with a wheel bell assembly (40) with a brake disc (43).

After the steering mechanism is connected with a connecting rod (42) welded on a middle shaft fixing column of the fork type swing arm independent suspension, a steering handle of the motorcycle is rotated, the independent suspension and the double front wheels can do synchronous shaft steering motion with the steering handle, and when the independent suspension does deformation motion, the double front wheels also do proper up-and-down motion.

2. The lower-arranged externally-hung connecting fork-type swing arm independent suspension inverted three-wheel front double-wheel device according to claim 1, which is characterized in that: the lower three-star steering main shaft and the lower three-star auxiliary shaft (4) are preset on the lower three-star constellation with the main shaft and the auxiliary shaft, the two shafts are arranged in parallel and are vertically welded on an original bottom plate, the lower three-star steering main shaft is connected with a headstock direction pipe, and the lower three-star auxiliary shaft is used for reinforcing and fixing the upper three-star constellation steering headstock direction pipe and has a positioning effect. The lower end of the connection connecting rod is welded on a middle shaft fixing column of the fork type swing arm independent suspension, the upper end of the connection connecting rod is welded with an upper three-star connecting piece (11) and a lower three-star connecting piece (12) which are used for connecting an upper three-star constellation on a steering shaft and a lower three-star base with a main shaft and an auxiliary shaft in the direction of the motorcycle, and the upper three-star connecting piece, the upper three-star constellation on the steering shaft and the lower three-star constellation with the main shaft and the auxiliary shaft are preset with four bolt holes and can be tightened and connected by eight upper and lower three-star connection bolts (6.

3. The externally hung and connected front double-wheel device with three inverted wheels and a fork type swing arm independent suspension according to claim 1, is characterized in that: three shaft hole points on the middle shaft fixing column are arranged on a vertical central line of the middle shaft fixing column in the same straight line, the radius of the shaft holes is the same, the shaft holes are arranged from top to bottom, the first shaft hole is used for being connected with bearing holes of the left upper fork swing arm and the right upper fork swing arm, and the other end of the left upper fork swing arm and the right upper fork swing arm are connected with a connecting ball head and then connected with a left front wheel fixing. The second shaft hole is used for connecting the bearing holes of the left and right adjusting swing arms, the other end of the adjusting swing arm is connected with the front wheel fixing support on the left and right sides after being welded with the adjusting screw rod, and the third shaft hole is used for connecting the bearing holes of the left and right lower fork swing arms. The other end of the left lower fork swing arm and the right lower fork swing arm are connected with the connecting ball head and then connected with the left front wheel fixing support and the right front wheel fixing support. And bearing holes of the swing arm for connecting with the middle shaft fixing column are the same in size.

4. The externally hung docked front three-wheel device with a fork-type swing arm independent suspension and three inverted wheels according to claim 1, wherein: the front wheel fixing supports on the left side and the right side are respectively provided with an upper ball head connecting hole and a lower ball head connecting hole, a front adjusting screw rod connecting hole and a rear adjusting screw rod connecting hole, and a wheel bell tightening connecting hole (44) for connecting with a wheel. Two connecting holes which are arranged up and down and connected with the connecting ball heads are arranged on the left front wheel fixing bracket and the right front wheel fixing bracket, and the hole diameters are the same. Two connecting holes which are arranged front and back and connected with the swing arm adjusting screw rods are arranged, and the hole radiuses are the same. Brake calipers (38) have been attached for mating with a brake disc in a wheel bell assembly. The front wheel fixing supports on the left side and the right side are similar in appearance but all parameters are the same, and the front wheel fixing supports are placed in a left-right mode and cannot be used in a mixed mode. Under the action of external force, the left and right front wheel fixing supports can independently move up and down or synchronously move up and down in axial symmetry at two sides. The left and right double front wheels are placed on the outer sides of the left and right front wheel fixing supports, and the wheels and the front wheel fixing supports are connected together through wheel bell tightening bolts through wheel bell tightening connecting holes.

5. The externally hung docked front three-wheel device with a fork-type swing arm independent suspension and three inverted wheels according to claim 1, wherein: the distances from the connecting holes of the center shaft fixing column in the upper fork swing arm and the lower fork swing arm on the left side and the right side to the connecting holes of the front wheel fixing bracket are the same. The left upper fork swing arm and the right lower fork swing arm are identical. The left and right swing arms are just similar but not identical in shape. The distances from the connecting holes of the middle shaft fixing column in the adjusting swing arms at the left side and the right side to the front wheel fixing supports at the left side and the right side are the same, and the adjusting swing arms at the left side and the right side are only similar in shape and are not completely the same. The left fork type swing arm and the right fork type swing arm are the same in length, the left adjusting swing arm and the right adjusting swing arm are the same in length, the distances from the balance spring seats on the two sides to the middle shaft fixing column connecting holes of the upper fork type swing arm are the same, the left return spring and the right return spring are the same in parameter, the system can swing left and right under the action of external force to movably deform, and when the external force stops acting, the system can automatically return.

6. The externally hung docked front three-wheel device with a fork-type swing arm independent suspension and three inverted wheels according to claim 1, wherein: the upper ends of the left upper fork swing arm and the right upper fork swing arm are provided with balance springs for balancing and assisting the left front wheel fixing support and the right front wheel fixing support. When the swing arm moves, the front wheel fixing support is driven to move up and down, the upper fork swing arm has corresponding acting force on the balance spring, and the other front wheel fixing support which is symmetrical to the shaft is correspondingly acted in the opposite direction. No matter the swing arm on the left or right moves up and down independently or simultaneously, the fork type swing arm can not directly push the swing arm on the other side, and only can exert acting force on the swing arm on the other side with axial symmetry through the balance spring.

7. The externally hung docked front three-wheel device with a fork-type swing arm independent suspension and three inverted wheels according to claim 1, wherein: four connecting ball heads on the upper fork type swing arm and the lower fork type swing arm on the left side and the right side are connected and fixed through ball head connecting bolts (36) and then are connected with front wheel fixing supports on the left side and the right side, and the inclination angle of the front wheel can be adjusted by adjusting the positions of the connecting ball heads, so that the double front wheels can stably run perpendicular to the ground.

8. The externally hung docked front three-wheel device with a fork-type swing arm independent suspension and three inverted wheels according to claim 1, wherein: two front and back adjusting screw rods are welded on each side of the outer ends of the left and right adjusting swing arms and used for adjusting the front speed of the front wheels, so that the front two wheels can steer and run more stably and can be controlled easily.

9. The externally hung docked front three-wheel device with a fork-type swing arm independent suspension and three inverted wheels according to claim 1, wherein: the angle limiting positioning sheet is welded on the middle shaft fixing column, the position of the angle limiting positioning sheet is shown on the lower portion of the upper fork swing arm and the upper portion of the lower fork swing arm, a limiting angle is preset, and the deformation space of the fork swing arm in the fork swing arm independent suspension and the deformation movement range of the front wheel fixing support can be limited. The safe control and running of the two wheels in a reasonable side-tipping angle before the reverse three wheels are ensured.

10. The externally hung docked front three-wheel device with a fork-type swing arm independent suspension and three inverted wheels according to claim 1, wherein: the fork type swing arm independent suspension and the steering mechanism are connected through a connecting rod. The upper end of the connecting rod is connected with the upper three-constellation of the steering mechanism and the lower three-constellation with the main and auxiliary shafts through welding upper and lower three-constellation connecting pieces. The lower end of the connecting rod is welded with a middle shaft fixing column in the independent suspension through a set angle. The appearance of the connecting rod is of a special-shaped structure, the upper square tube and the lower square tube are parallel, the middle connecting square tube is just placed below the lower three-star steering main shaft with the main shaft and the auxiliary shaft, and the upper square tube and the lower square tube are parallel to the lower three-star steering main shaft.