CN109895912B - Front wheel suspension tilting mechanism of double front wheel vehicle - Google Patents
Front wheel suspension tilting mechanism of double front wheel vehicle Download PDFInfo
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- CN109895912B CN109895912B CN201910280826.0A CN201910280826A CN109895912B CN 109895912 B CN109895912 B CN 109895912B CN 201910280826 A CN201910280826 A CN 201910280826A CN 109895912 B CN109895912 B CN 109895912B
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Abstract
The invention discloses a front wheel suspension tilting mechanism of a double front wheel vehicle, which comprises a frame, a left suspension assembly, a right suspension assembly, a rocker arm assembly and a steering device, wherein the left suspension assembly is arranged on the frame; the left suspension assembly and the right suspension assembly are symmetrically arranged at the left side and the right side of the frame through rocker arm assemblies; the front end of the frame is provided with a head stand pipe. The rocker arm assembly comprises an upper left rocker arm, an upper right rocker arm, a lower front rocker arm and a lower rear rocker arm, wherein the upper left rocker arm and the upper right rocker arm are symmetrically and rotatably arranged on the left side and the right side of the upper part of the head riser; the lower front rocker arm and the lower rear rocker arm are rotatably arranged on the front side and the rear side of the lower part of the head riser; the steering device is arranged below the rocker arm assembly. The front wheel suspension tilting mechanism realizes the miniaturization of the front part of the vehicle body, reduces the wheel distance of the front wheels, and improves the running stability and the steering flexibility of the vehicle; meanwhile, the whole structure is simplified, the processing and assembling difficulties are reduced, and the manufacturing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of vehicle suspension, and particularly relates to a front wheel suspension tilting mechanism of a double-front-wheel vehicle.
Background
The traditional three-wheel locomotive generally adopts a structure of one front wheel and two rear wheels, and the three-wheel structure has higher stability than the two-wheel structure and is easier to master by a driver when the vehicle runs straight, but the operation is very inflexible during turning, and particularly when turning at a higher speed, the three front and rear wheels are difficult to ensure to land simultaneously, so that side turning is easy to occur due to unstable gravity center.
In recent years, a new type of three-wheeled locomotive has been developed, which adopts a structure of two front wheels and one rear wheel, and the locomotive has two symmetrically arranged front wheels responsible for steering and one rear wheel responsible for driving, and the three wheels form an inverted isosceles triangle, which is also called as an inverted tricycle or a double front wheel vehicle. The vehicle type can effectively solve the potential safety hazard of two points and one line of the two-wheel vehicle by utilizing the triangle principle. Because the double front wheels are not simply added with one wheel, the two front wheels are connected with the frame by utilizing a special front suspension mechanism, and the flexible side-tipping swing is realized by the parallelogram structure, so that the two front wheels of the double front wheels are mutually related and relatively independent, the three wheels can be ensured to be always grounded at the same time, and strong ground grabbing force and good braking effect are provided for the whole vehicle. The two front wheel structures associated with each other can achieve a roll-capable performance almost equivalent to that of a two-wheeled vehicle with a single front wheel, enable the vehicle to perform excellent over-bending at a high speed, and provide stable braking performance. In addition, the two front wheels are independent relatively, so that a horizontal drop is allowed to exist between the two front wheels, and the possibility that the vehicle runs smoothly on uneven road surfaces is realized. Therefore, the double-front wheel vehicle not only inherits and optimizes the driving fun of the two-wheel vehicle, but also greatly improves the bearing capacity and the shock resistance of the vehicle.
In the prior art, in order to enable the double front steering wheels to adapt to various running road conditions, two steering front wheels and a driving rear wheel can always contact uneven ground all the time, a parallelogram multi-shaft multi-rod linkage type front wheel suspension mechanism capable of being inclined is generally adopted, and the mechanism is complex in connection structure and high in cost. In addition, the above-described mechanism requires a sufficient space to be mounted on the vehicle body, and tends to cause an increase in the front volume of the vehicle, particularly the track width of the two front wheels, resulting in deterioration in stability and flexibility of the vehicle at the time of steering.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art, and provides a novel front wheel suspension tilting mechanism of a double-front-wheel vehicle, which realizes the miniaturization of the front part of the vehicle body, reduces the wheel track of the front wheel, and improves the running stability and steering flexibility of the vehicle; meanwhile, the whole structure can be simplified, the processing and assembling difficulty can be reduced, and the manufacturing cost can be effectively reduced.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the device comprises a frame, a left suspension assembly, a right suspension assembly, a rocker arm assembly and a steering device; the left suspension assembly and the right suspension assembly are symmetrically arranged at the left side and the right side of the frame through rocker arm assemblies; the front end of the frame is provided with a head stand pipe. The rocker arm assembly comprises an upper left rocker arm, an upper right rocker arm, a lower front rocker arm and a lower rear rocker arm, wherein the upper left rocker arm and the upper right rocker arm are symmetrically and rotatably arranged on the left side and the right side of the upper part of the head riser; the lower front rocker arm and the lower rear rocker arm are rotatably arranged on the front side and the rear side of the lower part of the head riser; the steering device is arranged below the rocker arm assembly.
Specifically, the cross section of the upper left rocker arm is Y-shaped, one end of the Y-shaped opening of the upper left rocker arm forms a semi-enclosed cavity, and two sides of the cavity are coaxially provided with a left mounting hole respectively; the other end of the left upper rocker arm is provided with a right mounting hole, and the left upper rocker arm is rotatably mounted on the head riser through the right mounting hole; the cross section of the right upper rocker arm is Y-shaped, one end of the Y-shaped opening of the right upper rocker arm forms a semi-enclosed cavity, and two sides of the cavity are coaxially provided with a right mounting hole respectively; the other end of the right upper rocker arm is provided with a left mounting hole, and the left rocker arm is rotatably mounted on the vehicle head vertical pipe through the left mounting hole.
Preferably, the left suspension assembly comprises a left steering tube, a left steering column, a left yoke plate and a left shock absorbing device; the left steering tube is arranged in a semi-enclosed cavity formed at one end of the Y-shaped opening of the upper left rocker arm in a penetrating way; the left side of the upper part of the left steering tube is provided with a left upper rocker arm rotating bracket, and the front side and the rear side of the lower part of the left steering tube are respectively provided with a lower front rocker arm left bracket and a lower rear rocker arm left bracket; the left steering column is rotatably installed in the left steering tube; the left yoke plate is fixed at the lower end of the left steering column; the left yoke plate is provided with a left steering arm mounting bracket; the upper part of the left shock absorption device is connected with the left yoke plate;
the right suspension assembly comprises a right steering tube, a right steering column, a right yoke plate and a right shock absorbing device; the right steering tube is arranged in a semi-enclosed cavity formed at one end of the Y-shaped opening of the right upper rocker arm in a penetrating way; the right side of the upper part of the right steering tube is provided with a right upper rocker arm rotating bracket, and the front side and the rear side of the lower part of the right steering tube are respectively provided with a lower front rocker arm right bracket and a lower rear rocker arm right bracket; the right steering column is rotatably mounted in the right steering tube; the right yoke plate is fixed at the lower end of the right steering column; the right yoke plate is provided with a right steering arm mounting bracket; the upper part of the right shock absorbing device is connected with the right yoke plate.
Preferably, the left side and the right side of the upper part of the head stand pipe are respectively provided with an upper left rocker arm mounting bracket and an upper right rocker arm mounting bracket, and the front side and the rear side of the lower part of the head stand pipe are respectively provided with a lower front rocker arm mounting bracket and a lower rear rocker arm mounting bracket; the rotatable middle steering column is penetrated in the head stand pipe, the upper end of the rotatable middle steering column is fixedly connected with a steering handle, the lower end of the rotatable middle steering column is fixedly connected with a middle connecting plate, and the middle connecting plate is provided with a middle steering arm mounting bracket.
Preferably, the lower front rocker arm is provided with a left mounting hole, a middle mounting hole and a right mounting hole, and is rotatably connected with a lower front rocker arm left bracket of the left steering tube, a lower front rocker arm mounting bracket of the head stand pipe and a lower front rocker arm right bracket of the right steering tube respectively through the mounting holes;
the lower rear rocker arm is provided with a left mounting hole, a middle mounting hole and a right mounting hole, and is rotatably connected with a left bracket of the lower rear rocker arm of the left steering tube, a mounting bracket of the lower rear rocker arm of the head stand tube and a right bracket of the lower rear rocker arm of the right steering tube respectively through the mounting holes;
the left and right mounting holes of the left upper rocker arm and the axes of the left mounting hole and the middle mounting hole of the lower front and rear rocker arms form a parallelogram; the left and right mounting holes of the upper right rocker arm, the middle mounting holes of the lower front and rear rocker arms and the axis of the right mounting hole form a parallelogram, and the two parallelograms are distributed left and right along the axis of the head riser of the frame.
Preferably, the steering device is arranged above the left damping device and the right damping device and below the rocker arm assembly; the steering device comprises a steering push rod, wherein a left mounting hole, a middle mounting hole and a right mounting hole are formed in the steering push rod; the left mounting hole, the middle mounting hole and the right mounting hole are respectively provided with a left steering push rod bracket, a middle steering push rod bracket and a right steering push rod bracket which can rotate along the axis of the hole position; the left steering push rod bracket, the middle steering push rod bracket and the right steering push rod bracket are respectively and rotatably arranged on the left steering arm, the middle steering arm and the right steering arm; the left steering arm, the middle steering arm and the right steering arm are respectively and fixedly connected to the left yoke plate, the middle yoke plate and the right yoke plate.
In a preferred embodiment, the lower front rocker arm and the lower rear rocker arm are members having rectangular cross sections and extending in the left-right direction, and the length of the cross sections in the up-down direction is greater than the length of the cross sections in the front-rear direction, in order to ensure the rigidity and strength of the rocker arm assembly as a whole.
Preferably, the distance between the left and right mounting hole axes of the steering push rod is greater than the distance between the left and right steering column axes. The trapezoid steering structure can realize that the steering angle of the inner side wheel is larger than that of the outer side wheel when the vehicle steers, so that the vehicle can smoothly turn.
As a preferred embodiment, a left mounting hole, a middle mounting hole and a right mounting hole on the steering push rod are respectively provided with a left steering push rod bracket, a middle steering push rod bracket and a right steering push rod bracket which can rotate along the up and down directions of the axis of the hole position and have a Y-shaped cross section; the left steering push rod bracket, the middle steering push rod bracket and the right steering push rod bracket are respectively rotatably arranged on the left steering arm, the middle steering arm and the right steering arm along the front-back direction.
As another preferred embodiment, a left mounting hole, a middle mounting hole and a right mounting hole on the steering push rod are respectively provided with a left steering push rod bracket, a middle steering push rod bracket and a right steering push rod bracket which can rotate along the front and back directions of the axis of the hole position and have U-shaped cross sections; the left steering push rod bracket, the middle steering push rod bracket and the right steering push rod bracket are respectively and rotatably arranged on the left steering arm, the middle steering arm and the right steering arm along the up-down direction.
Compared with the prior art, the invention has the following advantages:
1. according to the technical scheme, the rocker arm assembly and the steering device are arranged above the front wheels, so that the wheel distance of the front wheels is effectively reduced, the front part of the vehicle body is miniaturized, and the steering flexibility of the vehicle is improved; all the component parts of the mechanism can be compactly connected, the integral structure is effectively simplified, and the machining precision and the assembly difficulty are reduced, so that the production cost is reduced.
2. The connecting mode of the technical scheme can lead the stress distribution of the mechanism to be more reasonable, effectively improve the integral strength and rigidity of the mechanism, reduce the impact of the front wheel on the frame when the vehicle runs on a bumpy road surface, and improve the service life of the mechanism.
3. According to the technical scheme, the steering device is arranged above the damping device and below the rocker arm assembly, so that the influence of the damping device on steering of the vehicle is effectively avoided, and the phenomenon that the vehicle is forced to steer when the damping device is in a compressed or extended state to enable the whole vehicle to roll left and right is prevented.
In order that the invention may be more clearly understood, specific embodiments thereof will be described below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a two-front-wheel vehicle equipped with the front-wheel suspension tilting mechanism described in embodiment 1.
Fig. 2 is a schematic structural view of the front wheel suspension tilting mechanism of embodiment 1.
Fig. 3 is a schematic view of the structure of the rocker arm assembly according to embodiment 1, (a) is a schematic view when the rocker arm assembly is in a horizontal state, and (b) is a schematic view when the rocker arm assembly is in a rocking up and down state.
Fig. 4 is a partial cross-sectional view of the front wheel suspension tilting mechanism described in embodiment 1.
Fig. 5 is a schematic perspective view of the steering device according to embodiment 1.
Fig. 6 is a plan view of the front wheel suspension tilting mechanism described in embodiment 1.
Fig. 7 is a front view of a two-front-wheel vehicle tilting state equipped with the front-wheel suspension tilting mechanism described in embodiment 1.
Fig. 8 is a front view of steering in a tilting state of a two-front-wheel vehicle equipped with the front-wheel suspension tilting mechanism described in embodiment 1.
Fig. 9 is a schematic perspective view of the steering device according to embodiment 2.
In the figure: 1-a frame; 11-a head riser; 111-an intermediate steering column; 12-upper left rocker arm mounting bracket; 13-upper right rocker arm mounting bracket; 14-lower front rocker arm mounting bracket; 15-lower rear rocker arm mounting bracket; 16-an intermediate yoke plate; 161-intermediate steering arm mounting bracket; 2-left suspension assembly; 21 left steering tube; 211-lower front rocker left bracket; 212-lower rear rocker left stand; 22-left steering column; 23 left yoke plates; 24-left shock absorbing device; 25-upper left rocker arm rotating bracket; 26-left steering arm; 27-left steering arm mounting bracket; 3-right suspension assembly; 31-right steering tube; 311-lower front rocker right bracket; 312-lower rear rocker right bracket; 32-right steering column; 33-right yoke plate; 34-right shock absorbing means; 35-upper right rocker arm rotating bracket; 36-right steering arm; 37-right steering arm mounting bracket; 4-rocker arm assembly; 41-upper left rocker arm; 42-upper right rocker arm; 43-lower front rocker arm; 44-lower rear rocker arm; 5-steering means; 51-steering pushrods; 52-left steering pushrod support; 53-intermediate steering pushrod support; 54-right steering pushrod support; 55-an intermediate steering arm; 6-steering handle; 7-left front wheel; 8-right front wheel.
Detailed Description
Example 1
In the following description, unless otherwise noted, the terms "up-down, front-back, left-right" and "right" refer to directions that are viewed from a driver driving a vehicle, wherein the up-down direction includes a vertical direction and a substantially up-down direction inclined from the vertical direction; the front-rear-left-right direction includes a horizontal direction and a substantially front-rear-left-right direction inclined from the horizontal direction. In addition, as used in the following description, the following is: the words "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "middle" and the like are merely for descriptive purposes and are not intended to limit the scope of the invention in which the invention may be practiced, but rather the relative relationship of these words should be construed as being within the scope of the invention if not otherwise materially altered.
Fig. 1 is a schematic structural view of a two-front-wheel vehicle equipped with the front-wheel suspension tilting mechanism of embodiment 1, which is illustrated as a vehicle having two front wheels and one rear wheel, and the two-front-wheel vehicle according to the present invention may be a vehicle having two front wheels and more than one rear wheel. The power unit mounted on the vehicle may be a drive unit such as an engine or a motor, a transmission unit, or the like.
Referring to fig. 2 to 6, the front wheel suspension tilting mechanism of the dual front wheel vehicle provided in this embodiment mainly comprises a frame 1, a left suspension assembly 2, a right suspension assembly 3, a rocker arm assembly 4 and a steering device 5. The left suspension assembly 2 and the right suspension assembly 3 are symmetrically arranged on the left side and the right side of the frame 1 through rocker arm assemblies 4; the front end of the frame 1 is provided with a head riser 11. The rocker arm assembly 4 comprises an upper left rocker arm 41, an upper right rocker arm 42, a lower front rocker arm 43 and a lower rear rocker arm 44, wherein the upper left rocker arm 41 and the upper right rocker arm 42 are symmetrically and rotatably arranged at the left side and the right side of the upper part of the head riser 11; the lower front rocker arm 43 and the lower rear rocker arm 44 are rotatably installed at both front and rear sides of the lower portion of the head pipe 11; the steering device 5 is mounted below the rocker arm assembly 4.
Specifically, the left and right sides of the upper part of the head riser 11 are respectively provided with an upper left rocker arm mounting bracket 12 and an upper right rocker arm mounting bracket 13, and the front and rear sides of the lower part of the head riser 11 are respectively provided with a lower front rocker arm mounting bracket 14 and a lower rear rocker arm mounting bracket 15. The rotatable middle steering column 111 is penetrated in the head riser 11, the upper end of the rotatable middle steering column is fixedly connected with a steering handle 6, the lower end of the rotatable middle steering column is fixedly connected with a middle connecting plate 16, and the middle connecting plate 16 is provided with a middle steering arm mounting bracket 161.
Specifically, the cross section of the upper left rocker arm 41 is in a Y shape, one end of the opening of the Y shape forms a semi-enclosed cavity, and two sides of the cavity are coaxially provided with a left mounting hole respectively; the other end of the upper left rocker 41 is provided with a right mounting hole, and is rotatably mounted on the head pipe 11 through the right mounting hole. Similarly, the cross section of the upper right rocker arm 42 is in a Y shape, one end of the opening of the Y shape forms a semi-enclosed cavity, and two sides of the cavity are coaxially provided with a right mounting hole respectively; the other end of the upper right rocker arm 42 is provided with a left mounting hole, and is rotatably mounted on the head pipe 11 through the left mounting hole.
Specifically, the left suspension assembly 2 includes a left steering tube 21, a left steering column 22, a left yoke plate 23, and a left damper 24. The left steering tube 21 is arranged in a semi-enclosed cavity formed at one end of the Y-shaped opening of the left upper rocker arm 41 in a penetrating way; the left side of the upper part of the left steering tube 21 is provided with an upper left rocker arm rotating bracket 25, and the front and rear sides of the lower part of the left steering tube 21 are respectively provided with a lower front rocker arm left bracket 211 and a lower rear rocker arm left bracket 212. The left steering column 22 is rotatably mounted in the left steering tube 21. The left yoke plate 23 is fixed to the lower end of the left steering column 22; the left yoke plate 23 is provided with a left steering arm mounting bracket 27. The upper part of the left shock absorbing device 24 is connected with the left yoke plate 23.
The right suspension assembly 3 includes a right steering tube 31, a right steering column 32, a right yoke plate 33, and a right damper 34. The right steering tube 31 is arranged in the semi-enclosed cavity formed at one end of the Y-shaped opening of the right upper rocker arm 42 in a penetrating way; the right side of the upper part of the right steering tube 31 is provided with an upper right rocker arm rotating bracket 35, and the front and rear sides of the lower part of the right steering tube 31 are respectively provided with a lower front rocker arm right bracket 311 and a lower rear rocker arm right bracket 312. The right steering column 32 is rotatably mounted in the right steering tube 31. The right yoke plate 33 is fixed to the lower end of the right steering column 32; the right yoke plate 33 is provided with a right steering arm mounting bracket 37. The upper part of the right damper 34 is connected to the right yoke plate 33.
The lower front rocker arm 43 is provided with a left mounting hole, a middle mounting hole and a right mounting hole, and the lower front rocker arm 43 is rotatably connected with the lower front rocker arm left bracket 211 of the left steering tube 21, the lower front rocker arm mounting bracket 14 of the head riser 11 and the lower front rocker arm right bracket 311 of the right steering tube 31 through the mounting holes.
The lower rear rocker arm 44 is provided with a left mounting hole, a middle mounting hole and a right mounting hole, and the lower rear rocker arm 44 is rotatably connected with the lower rear rocker arm left bracket 212 of the left steering tube 21, the lower rear rocker arm mounting bracket 15 of the head riser 11 and the lower rear rocker arm right bracket 312 of the right steering tube 31 through the mounting holes.
Fig. 3 is a schematic structural diagram of the rocker arm assembly according to embodiment 1, wherein (a) is a schematic diagram of the rocker arm assembly in a horizontal state, and (b) is a schematic diagram of the rocker arm assembly in an up-down swing state. When the vehicle is in an upright state, the projection points of the left mounting hole axis A and the right mounting hole axis B of the left upper rocker arm 41, the left mounting hole axis E of the lower front rocker arm and the rear rocker arm and the middle mounting hole axis F in the vertical direction form a parallelogram as seen from the front of the vehicle; the left mounting hole axis C and the right mounting hole axis D of the upper right rocker arm 42 and the projection points of the middle mounting hole axis F and the right mounting hole axis G of the lower front and rear rocker arms in the vertical direction form one parallelogram, and the two parallelograms are symmetrically distributed along the axis of the head riser 11 left and right as shown in fig. 3 (a).
When the vehicle is in a rolling state, the rocker arm assembly 4 swings up and down, as shown in fig. 3 (b), under the drive of the lower front rocker arm and the lower rear rocker arm, the two parallelograms rotate around the axis F, and as the projection point of B, C, F is fixed on the head riser of the vehicle frame and the projection point of E, F, G is on the same straight line, the left steering tube and the right steering tube are always associated to move along the up and down direction parallel to the axis of the head riser 11 as a result of the rotation of the two parallelograms, and the distance of the upward (downward) movement of the left steering tube is equal to the distance of the downward (upward) movement of the right steering tube, so that the left front wheel and the right front wheel are mutually associated to move up and down, and the two front wheels of the vehicle are ensured to be always landed simultaneously, thereby improving the safety and stability of the vehicle.
In order to improve the rigidity and strength of the rocker arm assembly as a whole, the lower front rocker arm 43 and the lower rear rocker arm 44 are members extending in the left-right direction and having a rectangular cross section, and the length L1 in the up-down direction is longer than the length L2 in the front-rear direction as shown in fig. 4.
Fig. 5 is a schematic perspective view of a steering device according to embodiment 1. The steering device 5 of the embodiment comprises a steering push rod 51, wherein a left mounting hole, a middle mounting hole and a right mounting hole are formed in the steering push rod 51; the left mounting hole, the middle mounting hole and the right mounting hole are respectively provided with a left steering push rod bracket 52, a middle steering push rod bracket 53 and a right steering push rod bracket 54 which can rotate along the up and down directions of the axis of the hole position and have a Y-shaped cross section. The left, middle and right steering pushrod brackets 52, 53 and 54 are rotatably mounted on the left, middle and right steering arms 26, 55 and 36, respectively, in the front and rear directions; the left steering arm 26, the middle steering arm 55 and the right steering arm 36 are fixedly connected to the left steering arm mounting bracket 27 of the left yoke plate 23, the middle steering arm mounting bracket 161 of the middle yoke plate 16 and the right steering arm mounting bracket 37 of the right yoke plate 33, respectively.
The left steering column 22 is mounted in the left steering tube 21 by bearing members provided at upper and lower ends thereof, and can only rotate around the axis of the left steering tube 21 without being moved up and down along the axis relative to the left steering tube 21. The middle steering column 111 is installed in the head pipe 11 through bearing parts provided at upper and lower ends, and can only rotate around the axis of the head pipe 11 but cannot move up and down along the axis relative to the head pipe 11. The right steering column 32 is mounted in the right steering tube 31 by bearing members provided at upper and lower ends thereof, and is rotatable only about the axis of the right steering tube 31 and is not movable up and down along the axis relative to the right steering tube 31.
Referring to fig. 6, a top view of the front wheel suspension tilting mechanism according to embodiment 1 is shown. The distance between the left and right mounting hole axes of the steering push rod 51 is greater than the distance between the left and right steering column axes. The projection points of the four axes in the horizontal direction form an isosceles trapezoid, and the trapezoid steering structure can enable the vehicle to turn more smoothly, so that riding comfort of a driver during steering of the vehicle is improved.
Please refer to fig. 7 in conjunction with fig. 3, which is a front view of a tilting state of a two-front-wheel vehicle equipped with the front-wheel suspension tilting mechanism described in embodiment 1. When a two-front-wheel vehicle equipped with the front-wheel suspension tilting mechanism described in embodiment 1 is tilted to the left, the center of gravity of the vehicle will shift to the left and drive the lower front and rear swing arms to rotate about the axis F; simultaneously, the upper left rocker arm rotates upwards around the axis B, and the upper right rocker arm rotates downwards around the axis C; under the drive of rocking arm subassembly, left side hangs the subassembly and right side and hangs the subassembly and move downwards, and the distance that both moved equals, and two front wheels are all the time on the ground in whole slope process to ensure that the vehicle steadily goes.
Referring also to fig. 8, there is shown a front view of a steering in a tilting state of a two-front-wheel vehicle equipped with the front-wheel suspension tilting mechanism described in embodiment 1. When the two-front-wheel vehicle equipped with the front-wheel suspension tilting mechanism described in embodiment 1 is tilted to the left while the driver manipulates the steering handle 6 to turn to the left, the rocker arm assembly 4 drives the left suspension assembly 2 to move upward and the right suspension assembly 3 to move downward in synchronization; meanwhile, the steering device 5 can rotate around the up-down direction and the front-back direction respectively, and the steering action of the steering handle 6 is transmitted to the left suspension assembly and the right suspension assembly, so that the left suspension assembly and the right suspension assembly can rotate left around the respective axes respectively, and the purpose that when the whole vehicle tilts and turns, the left front wheel and the right front wheel can be always grounded at the same time to ensure that the vehicle stably runs is achieved.
Example 2
Embodiment 2 of the present invention is substantially the same as embodiment 1, except that the steering device has a different part of its structure, and the rest of the same parts will not be described herein. The following is a detailed description with reference to fig. 9.
In this embodiment, the steering device 5 'includes a steering pushrod 51' provided with a left mounting hole, a middle mounting hole and a right mounting hole; the left mounting hole, the middle mounting hole and the right mounting hole are respectively provided with a left steering push rod bracket 52', a middle steering push rod bracket 53' and a right steering push rod bracket 54' which can rotate along the front and back directions of the axis of the hole position and have a U-shaped cross section. The left steering push rod bracket 52', the middle steering push rod bracket 53', and the right steering push rod bracket 54 'are rotatably installed on the left steering arm 26', the middle steering arm 55', and the right steering arm 36' in the up-down direction, respectively; the left steering arm 26', the middle steering arm 55' and the right steering arm 36' are fixedly connected to the left steering arm mounting bracket 27' of the left yoke plate 23', the middle steering arm mounting bracket 161' of the middle yoke plate 16' and the right steering arm mounting bracket 37' of the right yoke plate 33', respectively.
By adopting the structure and the connecting mode, the steering device can also rotate around the up-down direction and the front-back direction respectively, and the left suspension assembly and the right suspension assembly can still be pushed to rotate left or right around the respective axes respectively when the rocker arm assembly swings up and down, so that the left front wheel and the right front wheel are always kept simultaneously on the ground when the vehicle tilts and turns.
The foregoing detailed description of various embodiments of the invention is provided merely for the purpose of facilitating understanding of the technical solutions and working principles disclosed herein, and is not intended to limit the embodiments and application scope of the invention. If various changes, modifications and/or combinations of the present invention can be made without departing from the spirit and scope of the present invention, the present invention also includes such changes, modifications and/or combinations if they fall within the scope of the claims and the equivalents thereof.
Claims (6)
1. A front wheel suspension tilting mechanism of a double front wheel vehicle comprises a frame, a left suspension assembly, a right suspension assembly, a rocker arm assembly and a steering device; the left suspension assembly and the right suspension assembly are symmetrically arranged at the left side and the right side of the frame through rocker arm assemblies; the front end of the frame is provided with a head stand pipe; the method is characterized in that: the rocker arm assembly comprises an upper left rocker arm, an upper right rocker arm, a lower front rocker arm and a lower rear rocker arm, wherein the upper left rocker arm and the upper right rocker arm are symmetrically and rotatably arranged on the left side and the right side of the upper part of the head riser; the lower front rocker arm and the lower rear rocker arm are rotatably arranged on the front side and the rear side of the lower part of the head riser; the steering device is arranged below the rocker arm assembly; the cross section of the upper left rocker arm is Y-shaped, one end of the Y-shaped opening of the upper left rocker arm forms a semi-enclosed cavity, and two sides of the cavity are coaxially provided with a left mounting hole respectively; the other end of the left upper rocker arm is provided with a right mounting hole, and the left upper rocker arm is rotatably mounted on the head riser through the right mounting hole; the cross section of the right upper rocker arm is Y-shaped, one end of the Y-shaped opening of the right upper rocker arm forms a semi-enclosed cavity, and two sides of the cavity are coaxially provided with a right mounting hole respectively; the other end of the right upper rocker arm is provided with a left mounting hole, and the right upper rocker arm is rotatably mounted on the head riser through the left mounting hole;
the left suspension assembly comprises a left steering tube, a left steering column, a left yoke plate and a left damping device; the left steering tube is arranged in a semi-enclosed cavity formed at one end of the Y-shaped opening of the upper left rocker arm in a penetrating way; the left side of the upper part of the left steering tube is provided with a left upper rocker arm rotating bracket, and the front side and the rear side of the lower part of the left steering tube are respectively provided with a lower front rocker arm left bracket and a lower rear rocker arm left bracket; the left steering column is rotatably installed in the left steering tube; the left yoke plate is fixed at the lower end of the left steering column; the left yoke plate is provided with a left steering arm mounting bracket; the upper part of the left shock absorption device is connected with the left yoke plate;
the right suspension assembly comprises a right steering tube, a right steering column, a right yoke plate and a right shock absorbing device; the right steering tube is arranged in a semi-enclosed cavity formed at one end of the Y-shaped opening of the right upper rocker arm in a penetrating way; the right side of the upper part of the right steering tube is provided with a right upper rocker arm rotating bracket, and the front side and the rear side of the lower part of the right steering tube are respectively provided with a lower front rocker arm right bracket and a lower rear rocker arm right bracket; the right steering column is rotatably mounted in the right steering tube; the right yoke plate is fixed at the lower end of the right steering column; the right yoke plate is provided with a right steering arm mounting bracket; the upper part of the right shock absorption device is connected with the right yoke plate;
the left side and the right side of the upper part of the head stand pipe are respectively provided with an upper left rocker arm mounting bracket and an upper right rocker arm mounting bracket, and the front side and the rear side of the lower part of the head stand pipe are respectively provided with a lower front rocker arm mounting bracket and a lower rear rocker arm mounting bracket; a rotatable middle steering column is arranged in the head vertical pipe in a penetrating way, the upper end of the rotatable middle steering column is fixedly connected with a steering handle, the lower end of the rotatable middle steering column is fixedly connected with a middle connecting plate, and the middle connecting plate is provided with a middle steering arm mounting bracket;
the lower front rocker arm is provided with a left mounting hole, a middle mounting hole and a right mounting hole, and is rotatably connected with a lower front rocker arm left bracket of a left steering tube, a lower front rocker arm mounting bracket of a vehicle head vertical tube and a lower front rocker arm right bracket of a right steering tube respectively through the mounting holes;
the lower rear rocker arm is provided with a left mounting hole, a middle mounting hole and a right mounting hole, and is rotatably connected with a left bracket of the lower rear rocker arm of the left steering tube, a mounting bracket of the lower rear rocker arm of the head stand tube and a right bracket of the lower rear rocker arm of the right steering tube respectively through the mounting holes;
the left and right mounting holes of the left upper rocker arm and the axes of the left mounting hole and the middle mounting hole of the lower front and rear rocker arms form a parallelogram; the left and right mounting holes of the upper right rocker arm, the middle mounting holes of the lower front and rear rocker arms and the axis of the right mounting hole form a parallelogram, and the two parallelograms are distributed left and right along the axis of the head riser of the frame.
2. The front wheel suspension tilting mechanism of a two-front wheel vehicle according to claim 1, wherein: the steering device is arranged above the left damping device and the right damping device and below the rocker arm assembly; the steering device comprises a steering push rod, wherein a left mounting hole, a middle mounting hole and a right mounting hole are formed in the steering push rod; the left mounting hole, the middle mounting hole and the right mounting hole are respectively provided with a left steering push rod bracket, a middle steering push rod bracket and a right steering push rod bracket which can rotate along the axis of the hole position; the left steering push rod bracket, the middle steering push rod bracket and the right steering push rod bracket are respectively and rotatably arranged on the left steering arm, the middle steering arm and the right steering arm; the left steering arm, the middle steering arm and the right steering arm are respectively and fixedly connected to the left yoke plate, the middle yoke plate and the right yoke plate.
3. The front wheel suspension tilting mechanism of a two-front wheel vehicle according to claim 1 or 2, characterized in that: the lower front rocker arm and the lower rear rocker arm are members which extend in the left-right direction and have rectangular cross sections, and the length of the cross sections in the up-down direction is greater than the length of the cross sections in the front-rear direction.
4. The front wheel suspension tilting mechanism of a two-front wheel vehicle according to claim 2, wherein: the distance between the left mounting hole axis and the right mounting hole axis of the steering push rod is larger than the distance between the left steering column axis and the right steering column axis.
5. The front wheel suspension tilting mechanism of a two-front wheel vehicle according to claim 2, wherein: the left mounting hole, the middle mounting hole and the right mounting hole on the steering push rod are respectively provided with a left steering push rod bracket, a middle steering push rod bracket and a right steering push rod bracket which can rotate around the axes in the upper and lower directions of the hole site and have a Y-shaped cross section; the left steering push rod bracket, the middle steering push rod bracket and the right steering push rod bracket are respectively rotatably mounted on the left steering arm, the middle steering arm and the right steering arm around rotation axes extending in the front-rear direction.
6. The front wheel suspension tilting mechanism of a two-front wheel vehicle according to claim 2, wherein: the left mounting hole, the middle mounting hole and the right mounting hole on the steering push rod are respectively provided with a left steering push rod bracket, a middle steering push rod bracket and a right steering push rod bracket which can rotate around the axes of the front and rear directions of the hole site and have U-shaped cross sections; the left steering push rod bracket, the middle steering push rod bracket and the right steering push rod bracket are respectively rotatably arranged on the left steering arm, the middle steering arm and the right steering arm around rotating axes extending along the up-down direction.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110217331B (en) * | 2019-07-12 | 2023-12-22 | 浙江森铃摩托车有限公司 | Tilting mechanism of electric motor car split type front wheel |
| CN110539834A (en) * | 2019-08-08 | 2019-12-06 | 吕榕志 | Front double-wheel self-return balancing assembly universal plate deformable device of reverse tricycle |
| CN110562370A (en) * | 2019-08-09 | 2019-12-13 | 吕榕志 | Rocker arm plate deformable device of reverse three-wheel front double-wheel self-return positive balance assembly |
| CN114194289A (en) * | 2020-09-17 | 2022-03-18 | 深圳市皓颢智能科技有限公司 | Double-wheel linkage mechanism |
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