CN210027727U - Front wheel supporting steering mechanism of double-front-wheel motorcycle - Google Patents
Front wheel supporting steering mechanism of double-front-wheel motorcycle Download PDFInfo
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- CN210027727U CN210027727U CN201920447174.0U CN201920447174U CN210027727U CN 210027727 U CN210027727 U CN 210027727U CN 201920447174 U CN201920447174 U CN 201920447174U CN 210027727 U CN210027727 U CN 210027727U
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Abstract
A front wheel supporting and steering mechanism of a double-front-wheel motorcycle comprises a fixed seat, an upper cross arm, a lower cross arm, a damping device, a wheel mounting seat and a steering device; the upper cross arm comprises a left upper cross arm and a right upper cross arm which are hinged with the fixing seat, the cross arm comprises a left lower cross arm and a right lower cross arm which are hinged with the fixing seat, the damping device comprises a swinging support arm, a left damping column and a right damping column, the middle part of the swinging support arm is hinged with the fixing seat, and the left damping column and the right damping column are arranged between the swinging support arm and the left lower cross arm as well as between the swinging support arm and the right lower cross arm; the steering device comprises a main shaft, a transmission swing rod, a steering shaft sleeve, a steering support seat, a steering support arm, a left swing arm, a right swing arm, a left steering rod and a right steering rod. The fixing seat is of an integral structure, so that the mechanical structure is better, the weight is lighter, and the processing and the assembly are easier. The utility model discloses the integrated configuration by a plurality of parts is accomplished and is turned to the action, makes when having saved the processing cost turn to the flow more smoothly.
Description
Technical Field
The utility model relates to a technical field of motorcycle, a front wheel supports steering mechanism with two front wheel motorcycles of multistage shock-absorbing structure specifically says so.
Background
The existing motorcycle usually adopts a two-wheel or three-wheel structure, the front wheels are the steering mechanism of the motorcycle, the driver changes the advancing direction of the motorcycle by operating and rotating a handle, and the motorcycle with the three-wheel structure is easier to be mastered by the driver than the motorcycle with the two-wheel structure. The traditional motor tricycle generally adopts a structure that a single wheel is arranged in front of the motor tricycle and two wheels are arranged behind the motor tricycle, and the structure has the problem of steering stability, so that the motor tricycle cannot turn under the condition of high speed, and otherwise can turn sideways; in addition, the traditional motor tricycle can only be suitable for relatively flat road surfaces, and when the road surfaces have large fluctuation, the damping structures of the front wheel and the rear wheel of the traditional tricycle have large potential safety hazards.
In recent years, various motorcycle manufacturers have searched for and researched motorcycles with double front wheels, wherein the motorcycles are provided with a left front wheel and a right front wheel which are arranged side by side, the rear wheel is a single wheel, and the left front wheel and the right front wheel are both steering mechanisms, so that the vehicles are guided to steer, the overall gravity center distribution of the vehicles is more reasonable, and the vehicles are more stable during driving.
In patent No. CN103153769, filed by bia joe company, a tiltable motorcycle is disclosed, having two front steering wheels, in which a frame, two front steering wheels, a steering tube rotatably connected to the frame and rigidly connected to a support assembly, one for each steering wheel, is provided, a steering group comprising a steering tube, two side posts, and an upper front cross arm, a lower front cross arm, an upper rear cross arm, and a lower rear cross arm connected to the steering tube and the side posts, respectively, and the upper front cross arm, the lower front cross arm, the upper rear cross arm, and the lower rear cross arm function to support a vehicle body, and the upper front cross arm, the lower front cross arm, the upper rear cross arm, and the lower rear cross arm simultaneously rotate with respect to the steering tube along with a turn or a undulation of a road surface while the motorcycle is traveling, thereby ensuring stability of the vehicle body.
The front wheel supporting mechanism of the existing double-front-wheel motorcycle is relatively complex, the middle of the fixing seat part connected with the frame is often hollowed out in a complex manner in order to ensure the cooperative work of the left side mechanism and the right side mechanism, the processing is relatively difficult, and meanwhile, in order to obtain corresponding supporting strength and prevent the breakage in use, all stress parts must also reach a large enough size so as to ensure that the stress position has a large enough solid section, thereby increasing the weight of the motorcycle. The existing steering mechanism generally adopts rigid connecting rod transmission, the weight increasing trend is increased for ensuring the normal work of the steering mechanism of the double-front-wheel motorcycle, and the existing steering mechanism has higher requirement on the matching degree of components, so higher processing precision is needed, the steering operation is not flexible in the use of the motorcycle, and in addition, the energy consumption is also increased relatively.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a front wheel supports steering mechanism of two front-wheel motorcycles.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be:
the utility model discloses a front wheel supporting steering mechanism of a double-front-wheel motorcycle, which comprises a fixed seat, an upper cross arm, a lower cross arm, a damping device, a wheel mounting seat and a steering device; wherein the fixed seat is connected with the frame and used as a foundation for supporting the wheels; the upper cross arm comprises a left upper cross arm and a right upper cross arm, the left upper cross arm and the right upper cross arm are hinged with the fixing seat, the lower cross arm comprises a left lower cross arm and a right lower cross arm, and the left lower cross arm and the right lower cross arm are hinged with the fixing seat; the damping device comprises a swinging support arm, a left damping column and a right damping column, the swinging support arm is of an integrally formed structure, the middle part of the swinging support arm is hinged with the fixed seat, the upper end of the left damping column is hinged with the left end of the swinging support arm, the lower end of the left damping column is hinged with the left lower cross arm, the upper end of the right damping column is hinged with the right end of the swinging support arm, and the lower end of the right damping column is hinged with the right lower cross arm; the wheel mounting seat comprises a left wheel mounting seat and a right wheel mounting seat, the upper end and the lower end of the left wheel mounting seat are respectively provided with an upper left mounting table and a lower left mounting table, an upper left cross arm is hinged with the upper left mounting table, a lower left cross arm is hinged with the lower left mounting table, the left end of the left wheel mounting seat is connected with a left wheel, the upper end and the lower end of the right wheel mounting seat are respectively provided with an upper right mounting table and a lower right mounting table, the upper right cross arm is hinged with the upper right mounting table, the lower right cross arm is hinged with the lower right mounting table, and the right end of the right wheel mounting seat is connected with a right wheel; the steering device comprises a main shaft, a transmission swing rod, a steering shaft sleeve, a steering support seat, a steering support arm, a left swing arm, a right swing arm, a left steering rod and a right steering rod, wherein the steering support seat is fixed with a fixed seat, one end of the steering support arm is connected with the steering support seat, the other end of the steering support arm is fixedly provided with the steering shaft sleeve, the steering shaft is rotatably arranged in the steering shaft sleeve, the upper end and the lower end of a rotating shaft respectively extend out of the steering shaft sleeve, one end of the transmission swing rod is connected with the main shaft, the other end of the transmission swing rod is connected with the upper end of the steering shaft, the lower end of the steering shaft is provided with a steering knuckle, the right end of the left swing arm and the left end of the right swing arm are simultaneously hinged with the steering knuckle, the left end of the left swing arm is connected with the left steering rod, the rear end of a left wheel mounting seat is provided with the left, the right steering rod is movably connected with the right steering seat.
The utility model discloses can also adopt following technical measure:
the fixing base on set up the mounting hole, sway the support arm and articulate with the fixing base in the mounting hole, and sway the articulated position of support arm and fixing base and be higher than the articulated position of upper left swing arm and upper right swing arm and fixing base.
The fixing seat is of a plate-shaped structure, and the central axes of the main shaft and the steering shaft fall into the middle axial surface of the fixing seat.
The left damping column and the right damping column are spring columns respectively, and the arrangement direction of the left damping column and the arrangement direction of the right damping column are parallel to the middle axial plane of the fixing seat respectively.
The left upper cross arm and the right upper cross arm are hinged with the fixing base through upper hinge shafts, the left lower cross arm and the right lower cross arm are hinged with the fixing base through lower hinge shafts, and the swinging support arm is hinged with the fixing base through a swinging hinge shaft.
The left steering seat is provided with a left steering joint, the left steering rod is hinged with the left steering joint, the right steering seat is provided with a right steering joint, and the right steering rod is hinged with the right steering joint.
The transmission swing rod comprises a first transmission swing rod and a second transmission swing rod, the first transmission swing rod is connected with the second transmission swing rod, the first transmission swing rod is fixedly connected with the main shaft, the second transmission swing rod is fixedly connected with the transmission shaft, and when the main shaft rotates, the first transmission swing rod and the second transmission swing rod drive the transmission shaft to synchronously rotate.
The left swing arm and the right swing arm are hinged with the steering knuckle through rotating hinge shafts.
The steering device is arranged on the rear side of the fixed seat.
The fixing seat is vertical to the horizontal plane.
The utility model has the advantages and positive effects that:
the utility model discloses an among the front wheel support steering mechanism of two front wheel motorcycles, the fixing base is platelike structure, goes up the xarm, the xarm down and sways the support arm and is connected with the fixing base, keeps the fixing base to an overall structure, and mechanics structure is better, adds man-hour and all easier when assembling. The steering structure is provided with a plurality of movable connecting structures from the main shaft to the wheel mounting seat, the steering action is completed by the combined structure of a plurality of parts, the movable connecting structures of the parts can make up the accuracy deficiency of part processing and assembly, and the steering process is smoother while the processing cost is saved. In addition, the spring columns arranged between the swing supporting arms and the lower cross arm can save materials, reduce the vehicle weight and effectively reduce the vehicle body vibration when the vehicle runs on a complex road surface, and improve the comfort of a driver.
Drawings
FIG. 1 is a schematic structural view of a front wheel supporting steering mechanism of a motorcycle with two front wheels according to the present invention;
FIG. 2 is a schematic view of the front wheel support steering mechanism of the dual front wheel motorcycle of the present invention in assembled use;
FIG. 3 is a front schematic view of the front wheel support steering mechanism of the dual front wheel motorcycle of the present invention;
FIG. 4 is a rear schematic view of the front wheel support steering mechanism of the dual front wheel motorcycle of the present invention;
FIG. 5 is a side schematic view of the front wheel support steering mechanism of the dual front wheel motorcycle of the present invention;
FIG. 6 is a top schematic view of the front wheel support steering mechanism of the dual front motorcycle of the present invention;
FIG. 7 is a bottom view of the front wheel support steering mechanism of the dual front wheel motorcycle of the present invention;
fig. 8 is a schematic view of a connection structure of a center main shaft and a steering shaft of a front wheel support steering mechanism of a motorcycle with two front wheels according to the present invention.
Detailed Description
The technical solution of the present invention is explained in detail by the accompanying drawings and the specific embodiments.
The directions of all the parts in the utility model are forward directions which are the directions of the motorcycle when the motorcycle normally runs forward, and backward directions which are the directions deviating from the forward directions; the utility model provides a left side and right side all correspond with the driver visual angle that is located the motorcycle driving position.
As shown in fig. 1 to 8, the front wheel supporting steering mechanism of a double-front-wheel motorcycle of the present invention comprises a fixing base 1, an upper cross arm, a lower cross arm, a damping device, a wheel mounting base and a steering device; wherein the fixed seat is connected with the frame 2 and is used as a foundation for supporting wheels; the upper cross arm comprises a left upper cross arm 3 and a right upper cross arm 4, the left upper cross arm and the right upper cross arm are hinged with the fixed seat, the left upper cross arm can be provided with a left upper front cross arm 3a and a left upper rear cross arm 3b which are integrally formed, the left upper front cross arm and the left upper rear cross arm are hinged with the fixed seat at the same time, because the upper cross arm bears less force relative to the lower cross arm, one of the left upper front cross arm and the left upper rear cross arm can be omitted according to the actual situation, correspondingly, the right upper cross arm can be provided with a right upper front cross arm 4a and a right upper rear cross arm 4b which are integrally formed, the right upper front cross arm and the right upper rear cross arm are hinged with the fixed seat at the same time, one of the right upper front cross arm and the right upper rear cross arm can also be omitted, the lower cross arm comprises a left lower cross arm 5 and a right lower cross arm 6, the left lower cross arm is hinged with the fixed seat, the left lower front cross arm and the left lower rear cross arm are hinged with the fixed seat, the right lower cross arm can be provided with a right lower front cross arm 6a and a right lower rear cross arm 6b which are integrally formed, and the right lower front cross arm and the right lower rear cross arm are simultaneously hinged with the fixed seat; the damping device comprises a swinging supporting arm 7, a left damping column 8a and a right damping column 8b, the swinging supporting arm is of an integrated structure, the middle part of the swinging supporting arm is hinged with a fixed seat, the upper end of the left damping column is hinged with the left end of the swinging supporting arm, the lower end of the left damping column is hinged with a left lower cross arm, the upper end of the right damping column is hinged with the right end of the swinging supporting arm, the lower end of the right damping column is hinged with a right lower cross arm, the left damping column is arranged from the upper left to the front cross arm, a gap between the left upper rear cross arm and the left lower rear cross arm penetrates through the gap, a left shock absorption seat 9 integrated with the left lower cross arm is arranged between the left lower front cross arm and the left lower rear cross arm, the lower end of a left shock absorption column is hinged with the left shock absorption seat, a right shock absorption column penetrates through the gap between the right upper front cross arm and the right upper rear cross arm, a right shock absorption seat 10 integrated with the right lower cross arm is arranged between the right lower front cross arm and the right lower rear cross arm, and the lower end of the right shock absorption column is hinged with the right shock absorption seat; the wheel mounting seat comprises a left wheel mounting seat 11 and a right wheel mounting seat 12, the upper end and the lower end of the left wheel mounting seat are respectively provided with an upper left mounting table 13 and a lower left mounting table 14, an upper left cross arm is hinged with the upper left mounting table, a lower left cross arm is hinged with the lower left mounting table, the left end of the left wheel mounting seat is connected with a left wheel, the upper end and the lower end of the right wheel mounting seat are respectively provided with an upper right mounting table 16 and a lower right mounting table 17, the upper right cross arm is hinged with the upper right mounting table, the lower right cross arm is hinged with the lower right mounting table, and the right end of the right wheel mounting seat is connected with a right wheel 15; the steering device comprises a main shaft 18, a transmission swing rod 19, a steering shaft 20, a steering shaft sleeve 21, a steering support seat 22, a steering support arm 23, a left swing arm 24, a right swing arm 25, a left steering rod 26 and a right steering rod 27, wherein the steering support seat is fixed with a fixed seat, one end of the steering support arm is connected with the steering support seat, the other end of the steering support arm is fixedly provided with the steering shaft sleeve, the steering shaft is rotatably arranged in the steering shaft sleeve, the upper end and the lower end of a rotating shaft respectively extend out of the steering shaft sleeve, one end of the transmission swing rod is connected with the main shaft, the other end of the transmission swing rod is connected with the upper end of the steering shaft, the lower end of the steering shaft is provided with a steering knuckle 28, the right end of the left swing arm and the left end of the right swing arm are simultaneously hinged with the steering knuckle, the left end of the left swing arm is connected with the left steering rod, the rear end of, the rear end of the right wheel mounting seat is provided with a right steering seat 30, and a right steering rod is movably connected with the right steering seat.
The fixing seat is provided with a mounting hole 31, the swing support arm is hinged with the fixing seat in the mounting hole, and the hinged position of the swing support arm and the fixing seat is higher than the hinged position of the upper left swing arm and the hinged position of the upper right swing arm and the fixing seat. The swing support arm is of an integral structure, a left shock absorption column and a right shock absorption column which are connected with the two ends of the swing support arm form an integral stress structure, and the shock absorption columns on the two sides deform and absorb shock together.
The fixing base is of a plate-shaped structure, the central axes of the main shaft and the steering shaft fall into the central axis surface of the fixing base, so that the mechanical stability of the whole structure is guaranteed, and the main shaft, the fixing base and the steering shaft are located at the positions of the central axis surface relative to the motorcycle, so that deviation cannot occur during steering.
The left shock absorption column and the right shock absorption column are spring columns respectively, the setting direction of the left shock absorption column and the setting direction of the right shock absorption column are parallel to the middle axial plane of the fixing seat respectively, and the left shock absorption column and the right shock absorption column are extruded by the left lower cross arm and the right lower cross arm when the road surface is uneven to deform and the deformation direction is formed.
The upper left cross arm and the upper right cross arm are hinged to the fixing base through the upper hinge shaft 32, the lower left cross arm and the lower right cross arm are hinged to the fixing base through the lower hinge shaft 33, and the swing support arm is hinged to the fixing base through the swing hinge shaft 34, so that the connection structure is simplified.
The left steering seat is provided with a left steering joint 35, the left steering rod is hinged with the left steering joint, the right steering seat is provided with a right steering joint 36, and the right steering rod is hinged with the right steering joint. The left steering joint can be for the left steering seat rotary drum, and the right steering joint can be for the right steering seat rotation.
The transmission swing rod comprises a first transmission swing rod 19a and a second transmission swing rod 19b, the first transmission swing rod is connected with the second transmission swing rod, the first transmission swing rod is fixedly connected with the main shaft, the second transmission swing rod is fixedly connected with the transmission shaft, and when the main shaft rotates, the first transmission swing rod and the second transmission swing rod drive the transmission shaft to synchronously rotate. The utility model discloses an in the embodiment, in order to reach better shock attenuation effect, fixing base and left and right shock attenuation post all are perpendicular and horizontal plane setting, so the steering spindle is the vertical direction setting equally, and in order to guarantee the comfort level that the motorcycle was controlled, the main shaft all sets up for the incline direction with the handlebar that is connected with the main shaft, is not parallel between main shaft and the steering spindle, but forms an angle, so need come the main shaft rotation that the handlebar drove through the transmission pendulum rod to convert the synchronous rotation of steering spindle into. The two-section transmission swing rod is more convenient to assemble.
The left swing arm and the right swing arm are hinged with a steering knuckle through a rotating hinged shaft 37, and the steering knuckle connected with the main shaft synchronously drives the left swing arm and the right swing arm to move, so that the left steering rod and the right steering rod drive wheels to steer.
When the fixing base adopts perpendicular mode of setting up, turn to the structure of device setting in the rear side of fixing base simpler, the transmission structure between main shaft and the steering spindle with easily realize and difficult and other parts take place mutual interference.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, but the present invention is not limited to the above embodiments, and any person skilled in the art can make some modifications or changes to equivalent embodiments by using the disclosed technical content without departing from the technical scope of the present invention.
Claims (10)
1. A front wheel supporting and steering mechanism of a double-front-wheel motorcycle is characterized by comprising a fixed seat, an upper cross arm, a lower cross arm, a damping device, a wheel mounting seat and a steering device; wherein the fixed seat is connected with the frame and used as a foundation for supporting the wheels; the upper cross arm comprises a left upper cross arm and a right upper cross arm, the left upper cross arm and the right upper cross arm are hinged with the fixing seat, the lower cross arm comprises a left lower cross arm and a right lower cross arm, and the left lower cross arm and the right lower cross arm are hinged with the fixing seat; the damping device comprises a swinging support arm, a left damping column and a right damping column, the swinging support arm is of an integrally formed structure, the middle part of the swinging support arm is hinged with the fixed seat, the upper end of the left damping column is hinged with the left end of the swinging support arm, the lower end of the left damping column is hinged with the left lower cross arm, the upper end of the right damping column is hinged with the right end of the swinging support arm, and the lower end of the right damping column is hinged with the right lower cross arm; the wheel mounting seat comprises a left wheel mounting seat and a right wheel mounting seat, the upper end and the lower end of the left wheel mounting seat are respectively provided with an upper left mounting table and a lower left mounting table, an upper left cross arm is hinged with the upper left mounting table, a lower left cross arm is hinged with the lower left mounting table, the left end of the left wheel mounting seat is connected with a left wheel, the upper end and the lower end of the right wheel mounting seat are respectively provided with an upper right mounting table and a lower right mounting table, the upper right cross arm is hinged with the upper right mounting table, the lower right cross arm is hinged with the lower right mounting table, and the right end of the right wheel mounting seat is connected with a right wheel; the steering device comprises a main shaft, a transmission swing rod, a steering shaft sleeve, a steering support seat, a steering support arm, a left swing arm, a right swing arm, a left steering rod and a right steering rod, wherein the steering support seat is fixed with a fixed seat, one end of the steering support arm is connected with the steering support seat, the other end of the steering support arm is fixedly provided with the steering shaft sleeve, the steering shaft is rotatably arranged in the steering shaft sleeve, the upper end and the lower end of a rotating shaft respectively extend out of the steering shaft sleeve, one end of the transmission swing rod is connected with the main shaft, the other end of the transmission swing rod is connected with the upper end of the steering shaft, the lower end of the steering shaft is provided with a steering knuckle, the right end of the left swing arm and the left end of the right swing arm are simultaneously hinged with the steering knuckle, the left end of the left swing arm is connected with the left steering rod, the rear end of a left wheel mounting seat is provided with the left, the right steering rod is movably connected with the right steering seat.
2. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 1, characterized in that: the fixing seat is provided with a mounting hole, the swing support arm is hinged with the fixing seat in the mounting hole, and the hinged position of the swing support arm and the fixing seat is higher than the hinged position of the upper left swing arm and the hinged position of the upper right swing arm and the fixing seat.
3. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 1 or 2, characterized in that: the fixing seat is of a plate-shaped structure, and the central axes of the main shaft and the steering shaft fall into the central axis surface of the fixing seat.
4. A front wheel supporting steering mechanism of a motorcycle with two front wheels as set forth in claim 3, wherein: the left shock absorption column and the right shock absorption column are spring columns respectively, and the arrangement direction of the left shock absorption column and the arrangement direction of the right shock absorption column are parallel to the middle axial plane of the fixed seat respectively.
5. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 4, characterized in that: the left upper cross arm and the right upper cross arm are hinged to the fixing base through upper hinge shafts, the left lower cross arm and the right lower cross arm are hinged to the fixing base through lower hinge shafts, and the swinging support arm is hinged to the fixing base through a swinging hinge shaft.
6. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 5, characterized in that: the left steering seat is provided with a left steering joint, the left steering rod is hinged with the left steering joint, the right steering seat is provided with a right steering joint, and the right steering rod is hinged with the right steering joint.
7. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 6, characterized in that: the transmission swing rod comprises a first transmission swing rod and a second transmission swing rod, the first transmission swing rod is connected with the second transmission swing rod, the first transmission swing rod is fixedly connected with the main shaft, the second transmission swing rod is fixedly connected with the transmission shaft, and when the main shaft rotates, the first transmission swing rod and the second transmission swing rod drive the transmission shaft to synchronously rotate.
8. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 7, wherein: the left swing arm and the right swing arm are hinged with the steering knuckle through rotating hinge shafts.
9. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 1, characterized in that: the steering device is arranged at the rear side of the fixed seat.
10. The front wheel support steering mechanism of a motorcycle with two front wheels according to claim 1, characterized in that: the fixing seat is vertical to the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920447174.0U CN210027727U (en) | 2019-04-04 | 2019-04-04 | Front wheel supporting steering mechanism of double-front-wheel motorcycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920447174.0U CN210027727U (en) | 2019-04-04 | 2019-04-04 | Front wheel supporting steering mechanism of double-front-wheel motorcycle |
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| CN210027727U true CN210027727U (en) | 2020-02-07 |
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| CN201920447174.0U Active CN210027727U (en) | 2019-04-04 | 2019-04-04 | Front wheel supporting steering mechanism of double-front-wheel motorcycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109878615A (en) * | 2019-04-04 | 2019-06-14 | 天津内燃机研究所（天津摩托车技术中心） | The front wheel supporting steering mechanism of two front wheels motorcycle |
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2019
- 2019-04-04 CN CN201920447174.0U patent/CN210027727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109878615A (en) * | 2019-04-04 | 2019-06-14 | 天津内燃机研究所（天津摩托车技术中心） | The front wheel supporting steering mechanism of two front wheels motorcycle |
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