CN111547175A

CN111547175A - Inclined four-wheel bicycle

Info

Publication number: CN111547175A
Application number: CN202010502982.XA
Authority: CN
Inventors: 杨松; 杨曦景
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-08-18

Abstract

The invention provides an inclined four-wheel bicycle, which comprises a frame, a steering system, a damping system, a power system, a braking system, a pair of front wheels and a pair of rear wheels, wherein the frame consists of a front frame body, a main frame body and a rear frame body; the upper part of the main frame body is provided with a cushion, and the lower part of the main frame body is provided with a pedal; the front suspension frame is provided with a pair of front suspension frames which are respectively arranged at two sides of the front frame body and a pair of rear suspension frames which are respectively arranged at two sides of the rear frame body; the front suspension consists of a front wheel shaft, an upper rocker arm I and a lower rocker arm I; the rear suspension is composed of a rear wheel shaft, an upper rocker arm II and a lower rocker arm II. The front suspension and the rear suspension can be automatically lifted and lowered according to the terrain, are suitable for various terrains, are safe and stable to run, easy to control and large in load, have the agility of a bicycle and the safety of an automobile, can ensure that four wheels can simultaneously roll and run, the maximum inclination can reach 45 degrees, and simultaneously keep the finished ground holding force and the stability and the comfort during running.

Description

Inclined four-wheel bicycle

Technical Field

The invention relates to the technical field of bicycles, in particular to an inclined four-wheel bicycle.

Background

The bicycle is a green and environment-friendly vehicle taking pedals as power. With the popularization of bicycles, various novel bicycles come into play. At present, common bicycles are two-wheel, three-wheel and four-wheel bicycles, especially tilting four-wheel bicycles, which are more and more favored by people due to safe and stable running and large load, but people find that when the tilting four-wheel bicycle is ridden, the front and the rear pairs of wheels of the tilting four-wheel bicycle are installed on the same rotating shaft to synchronously rotate, so that when the tilting four-wheel bicycle is ridden on paved road surfaces at high speed and needs to turn, or is ridden on uneven terrain surfaces, the phenomenon of skidding of the wheels can be easily caused due to the fact that the rolling radii of the inner side wheels are different from those of the outer side wheels, and different rotating speeds can not be realized, so that the phenomenon of skidding of the wheels is easily caused, the bicycle is difficult to drive and control, the braking performance is reduced, the driving stability is poor.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an inclined quadricycle that is applicable to various terrains, safe and stable in running, easy to handle, and heavy in load.

The specific technical scheme is as follows:

an inclined four-wheel bicycle comprises a frame, a steering system, a damping system, a power system, a braking system, a pair of front wheels and a pair of rear wheels, wherein the frame is composed of a front frame body, a main frame body and a rear frame body; the upper part of the main frame body is provided with a cushion, and the lower part of the main frame body is provided with a pedal; the method is characterized in that: the front suspension frame is provided with a pair of front suspension frames which are respectively arranged at two sides of the front frame body and a pair of rear suspension frames which are respectively arranged at two sides of the rear frame body; the front suspension consists of a front wheel shaft, an upper rocker arm I and a lower rocker arm I; the front wheel shaft is provided with a front wheel; one end of the upper rocker arm I is hinged to the side face of the upper part of the front frame body, and the other end of the upper rocker arm I is hinged to the upper part of the front wheel shaft; the lower rocker arm I is positioned below the upper rocker arm, one end of the lower rocker arm I is hinged to the side surface of the lower part of the front frame body, and the other end of the lower rocker arm I is hinged to the lower part of the front wheel shaft; the rear suspension consists of a rear wheel shaft, an upper rocker arm II and a lower rocker arm II; the rear wheel shaft is provided with a rear wheel; one end of the upper rocker arm II is hinged to the side face of the upper part of the rear frame body, and the other end of the upper rocker arm II is hinged to the upper part of the rear wheel shaft; the lower rocker arm II is positioned below the upper rocker arm II, one end of the lower rocker arm II is hinged to the side face of the lower part of the rear frame body, and the other end of the lower rocker arm II is hinged to the lower part of the rear wheel shaft.

Further, the main frame body is of a pi-shaped structure.

Furthermore, the upper rocker arm I and the upper rocker arm II are both of U-shaped structures; the lower rocker arm I and the lower rocker arm II are both of V-shaped structures.

Furthermore, the steering system comprises a connecting plate, a steering sleeve, a steering longitudinal pull rod, a steering handle, a central rocker arm, a steering tie rod, a universal joint and a fisheye rod; the two connecting plates are respectively fixed on the two front wheel shafts; the steering sleeve is a hollow cylinder body of which the outer wall is fixed at the rear side of the top of the front frame body; the steering longitudinal pull rod is vertically sleeved in the steering sleeve and can rotate in the steering sleeve, the upper end and the lower end of the steering longitudinal pull rod extend out of the steering sleeve, and the outer side of the steering longitudinal pull rod is provided with an annular block for limiting the longitudinal movement of the steering longitudinal pull rod in the steering sleeve; the steering handle is transversely fixed at the top of the steering longitudinal pull rod; the central rocker arm is vertically fixed at the bottom of the steering longitudinal pull rod, and a first steering bearing is sleeved at the end part of the central rocker arm; the upper end of the steering arm is longitudinally fixed at the bottom of the first steering bearing and can rotate along with the first steering bearing, and the lower end of the steering arm is sleeved with a second steering bearing; the middle part of the steering tie rod is transversely fixed on the two sides of the steering bearing and can rotate along with the steering bearing II; two ends of the steering tie rod are respectively connected with one end of a universal joint; the other end of the universal joint is connected with one end of the fisheye rod respectively; the other end of the fisheye rod is rotatably arranged on the connecting plate through a bolt.

Further, ball bearings are arranged on the inner sides of the top and the bottom of the steering sleeve; the steering longitudinal pull rod is sleeved and fixed in the ball bearing and can rotate in the ball bearing.

Furthermore, the damping system consists of a front damping mechanism and a rear damping mechanism; the front damping mechanism is composed of an adjusting plate, a swing bearing I, a cross rod I, a shock absorber I, a shock absorbing spring I and a return spring I; the upper end of the adjusting plate is fixed on the steering sleeve, the lower end of the adjusting plate is fixed on the top of the front frame body, and an adjusting groove is longitudinally formed in the adjusting plate; the first oscillating bearing is fastened on the adjusting plate through a bolt penetrating through the adjusting groove, and can move up and down along the adjusting groove under the condition that the bolt is loosened; the middle part of the cross rod I is fixed at the bottom side of the swing bearing and is parallel to the central connecting line of the two front wheels, and two ends of the cross rod I are respectively positioned above the two front suspensions; the number of the first shock absorbers is two, the first shock absorbers are respectively and correspondingly arranged above the two front suspensions, the upper end of each shock absorber is hinged to one end of the corresponding cross rod, and the other end of each shock absorber is hinged to a position, close to the front wheel, of the corresponding lower rocker arm I; the shock absorption spring is sleeved outside the first shock absorber, and the upper end and the lower end of the shock absorption spring are respectively fixed on the top part and the outer side of the bottom part of the first shock absorber; the number of the first reset springs is two, the first reset springs are respectively and correspondingly arranged above the two front suspension frames, the upper ends of the first reset springs are fixed at one end part of the cross rod, and the other ends of the first reset springs are fixed at the bottom of the front frame body; the rear damping mechanism consists of a second oscillating bearing, a second cross rod, a second damper, a second shock absorption spring and a second reset spring; the swing bearing II is vertically arranged on one frame rod of the rear frame body, is vertical to the rear wheel shaft and is positioned above the two rear suspension frames; the second cross rod is transversely fixed on the second oscillating bearing and is parallel to a central connecting line of the two rear wheels, and two ends of the second cross rod are respectively positioned above the two rear suspensions; the two second shock absorbers are correspondingly arranged above the two rear suspensions respectively, the upper ends of the second shock absorbers are hinged to one end of the second cross rod, and the other ends of the second shock absorbers are hinged to the position, close to the rear wheel, of the second lower rocker arm; the shock absorption spring is sleeved outside the shock absorber, and the upper end and the lower end of the shock absorption spring are respectively fixed on the top part and the outer side of the bottom part of the shock absorber; the two second reset springs are respectively and correspondingly arranged above the two rear suspension frames, the lower ends of the second reset springs are fixed at the two end parts of the cross rod, and the other ends of the second reset springs are fixed at the top of the rear suspension frame.

Further, the power system is a manpower driving device or an electric driving device.

The electric driving device is composed of a storage battery and a transmission mounted in the rear frame body, a driving motor built in the rear wheel, a power switch mounted outside the steering sleeve, and a speed change control switch mounted on the steering handle.

Furthermore, the manual driving device comprises a bearing sleeve, a driving shaft, a rotating arm, a driving gear, a driven shaft, a driven gear, a driving chain, a flywheel, a chain wheel, a driven chain and a wheel sleeve; the bearing sleeve is a hollow pipe body which is fixed at the bottom of the main frame and is internally provided with a bearing; the driving shaft is arranged in the bearing sleeve and can rotate, and two ends of the driving shaft extend out of the bearing sleeve; the number of the rotating arms is two, one end of each rotating arm is fixed at the two ends of the driving shaft, and the included angle between the two rotating arms is 180 degrees; the number of the pedals is two, and the pedals are respectively arranged at the other end of the rotating arm; the driving gear is fixed on one end of the driving shaft and can rotate; the driven shaft is rotatably arranged on the front side of the bottom of the rear frame body through a bearing seat; the driven gear is fixed on the driven shaft and is positioned on the same plane with the driving gear; one end of the driving chain is arranged on the driving gear, and the other end of the driving chain is arranged on the driven gear; the number of the flywheels is two, and the flywheels are respectively arranged at two ends of the driven shaft; the number of the chain wheels is two, the chain wheels are respectively arranged on the two wheel sleeves, and the chain wheels positioned on the same side of the frame and the flywheel are positioned on the same plane; one end of the driven chain is arranged on the flywheel, and the other end of the driven chain is arranged on the chain wheel. The manpower driving device and the electric driving device can exist independently or separately; the wheel sleeve is sleeved on the rear wheel shaft and can rotate, and the outer side of the wheel sleeve is fixedly connected with the rear wheel. The driving gear, the driven shaft, the driven gear, the flywheel and the chain wheel are all one-way clutches.

Further, the manual driving device also comprises an automatic chain tensioner (which is a chain automatic tensioner commonly used on the current bicycle and is used for tightening the chain); the upper end of the automatic chain tensioner is arranged at the bottom of the rear frame body and is positioned between the flywheel and the chain wheel (fixed by bolts), and the lower end of the automatic chain tensioner is provided with a tightening gear (meshed with the driven chain) clamped at the bottom of the driven chain.

The front suspension and the rear suspension can be automatically lifted and lowered according to the terrain, are suitable for various terrains, are safe and stable to run, easy to control and large in load, have the agility of a bicycle and the safety of an automobile, can ensure that four wheels can simultaneously roll and run, the maximum inclination can reach 45 degrees, and simultaneously keep the finished ground holding force and the stability and the comfort during running.

Drawings

FIG. 1 is a schematic structural view of a tilting quadricycle in accordance with the present invention;

FIG. 2 is a schematic structural view of a tilting quadricycle of the present invention without wheels mounted thereon;

FIG. 3 is a schematic view of the structure of the frame of the tilting quadricycle of the present invention;

FIG. 4 is a schematic structural view of a front suspension and a front shock absorbing mechanism of the tilting quadricycle in accordance with the present invention;

FIG. 5 is a schematic structural view of a rear suspension and a rear shock absorbing mechanism in a tilting quadricycle in accordance with the present invention;

FIG. 6 is a schematic structural view of a steering mechanism of a tilting quadricycle in accordance with the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is a schematic structural view of a rear suspension in a tilting quadricycle in accordance with the present invention in different terrains;

FIG. 9 is a circuit diagram of an electric drive device in the power system of the tilting quadricycle in accordance with the present invention;

FIG. 10 is a schematic structural diagram of a human power driving apparatus in a power system of a tilting quadricycle in accordance with the present invention;

shown in the figure: 1-vehicle frame, 101-front frame body, 102-main frame body, 103-rear frame body, 2-cushion, 3-pedal, 4-front wheel, 5-steering system, 501-connecting plate, 502-steering sleeve, 503-steering drag link, 504-steering handle, 5065-central rocker arm, 506-steering arm, 507-steering drag link, 508-universal joint, 509-fisheye rod, 5010-steering bearing I, 5011-steering bearing II, 6-front damping mechanism, 601-adjusting plate, 602-adjusting groove, 603-oscillating bearing I, 604-cross rod I, 605-damper I, 606-shock absorbing spring I, 607-return spring I, 7-rear damping mechanism, 701-oscillating bearing II, 702-cross rod II, 703-a second shock absorber, 704-a second shock absorption spring, 705-a second return spring, 8-a rear wheel, 9-a front suspension, 901-a front wheel shaft, 902-a first upper rocker, 903-a first lower rocker, 10-a rear front suspension, 1001-a rear wheel shaft, 1002-a second upper rocker, 1003-a second lower rocker, 1101-a bearing sleeve, 1102-a driving shaft, 1103-a rotating arm, 1104-a driving gear, 1105-a bearing seat, 1106-a driven shaft, 1107-a driven gear, 1108-a driving chain, 1109-a flywheel, 1110-a driven chain, 1111-a chain automatic tensioner, 1112-a chain wheel and 1113-a wheel sleeve.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.

As shown in fig. 1, the tilting four-wheel bicycle of the present invention comprises a frame 1, a steering system 5, a damping system, a power system, a braking system (the braking system is a disc brake system used in a conventional electric vehicle or bicycle, i.e., a brake disc, a brake pad, and a brake are mounted on a wheel axle, a brake handle is mounted on a steering handle 504, the brake handle is connected with the brake through a wrapping steel wire rope, and the brake handle is pressed to realize braking), a pair of front wheels 4, and a pair of rear wheels 8.

As shown in fig. 3, the vehicle body frame 1 is composed of a front frame body 101, a main frame body 102, and a rear frame body 103. The illustrated front frame 101 is a rectangular parallelepiped frame structure. The main frame body 102 is of a pi-shaped structure, and a storage box for storing articles or storage batteries and the like can be arranged in the rear frame body 103.

As shown in fig. 1 and 2, a seat cushion 2 is provided on the upper portion of the main frame 102, an installation frame fixed on the main frame 102 for installing and supporting the seat cushion 2 is provided on the lower portion of the seat cushion, the installation frame can be lifted according to the structure of a conventional bicycle, and pedals 3 are installed on the lower portion of the main frame 102, and the pedals 3 are used for placing feet and can be fixed (non-rotatable) or rotatable.

As shown in fig. 1, 2, 4 and 5, the tilting four-wheel bicycle further includes a pair of front suspensions 9 (one for each of the left and right front wheels) respectively mounted on both sides of the front frame body 101 and a pair of rear suspensions 10 (one for each of the left and right front wheels) respectively mounted on both sides of the rear frame body 103; the front suspension 9 consists of a front wheel shaft 901, an upper rocker arm I902 and a lower rocker arm I903; the front wheel shaft 901 is provided with a front wheel 4; one end of the upper rocker arm I902 is hinged to the side surface of the upper part of the front frame body 101, and the other end of the upper rocker arm I902 is hinged to the upper part of the front wheel shaft 901; the first lower rocker arm 903 is positioned below the first upper rocker arm 902, one end of the first lower rocker arm 903 is hinged to the side surface of the lower part of the front frame body 101, and the other end of the first lower rocker arm 903 is hinged to the lower part of the front wheel shaft 901; the rear suspension 10 consists of a rear wheel shaft 1001, an upper rocker arm II 1002 and a lower rocker arm II 1003; a rear wheel 8 is mounted on the rear axle 1001; one end of the second upper rocker arm 1002 is hinged to the side surface of the upper part of the rear frame body 103, and the other end of the second upper rocker arm 1002 is hinged to the upper part of the rear wheel axle 1001; the second lower rocker 1003 is positioned below the second upper rocker 1002, one end of the second lower rocker 1003 is hinged to the side face of the lower portion of the rear frame body 103, and the other end of the second lower rocker 1003 is hinged to the lower portion of the rear wheel axle 1003. The upper rocker arm I902 and the upper rocker arm II 1002 are both of U-shaped structures; the first lower rocker arm 903 and the second lower rocker arm 1003 are both of V-shaped structures.

The left and right groups of front suspensions 9 form a parallelogram structure; the left and right rear suspensions 109 also form a parallelogram structure. Easy operation and can keep stable.

As shown in fig. 6, the steering system 5 includes a connecting plate 501, a steering sleeve 502, a trailing arm 503, a steering handle 504, a central rocker arm 505, a steering arm 506, a tie rod 507, a universal joint 508, and a fisheye bar 509; the two connecting plates 501 are respectively fixed on two front wheel shafts 901 (one each of the left and right front wheel shafts 901); the steering sleeve 502 is a hollow cylinder with an outer wall fixed on the rear side of the top of the front frame body 101; the longitudinal steering tie rod 503 is vertically sleeved in the steering sleeve 502 and can rotate in the steering sleeve 502 (the structure and the connection relationship between the longitudinal steering tie rod 503 and the steering sleeve 502 are equal to those of a conventional bicycle or an electric bicycle at present), the upper end and the lower end of the longitudinal steering tie rod 503 extend out of the steering sleeve 502, and the outer side of the longitudinal steering tie rod 503 is provided with an annular block for limiting the longitudinal movement of the longitudinal steering tie rod 503 in the steering sleeve 502; the steering handle 504 is transversely fixed on the top of the longitudinal tie rod 503; the central rocker arm 505 is vertically fixed at the bottom of the longitudinal steering pull rod 503, a first steering bearing 5010 is sleeved at the end part of the central rocker arm 505, and the first steering bearing 5010 stands on the side; the upper end of the steering arm 506 is longitudinally fixed at the bottom of the first steering bearing 5010 and can rotate along with the first steering bearing 5010, a second steering bearing 5011 is fixedly sleeved at the lower end of the steering arm 506, and the second steering bearing 5011 is horizontally arranged; the middle part of the steering tie rod 507 is transversely fixed on the side surface of the second steering bearing 5011 and can rotate along with the second steering bearing 5011; two ends of the tie rod 507 are respectively connected with one end of a universal joint 508; the other end of the universal joint 508 is connected with one end of a fisheye rod 509 (one end of the fisheye rod 509 is annular, and the other end is rod-shaped, and is connected with the rod-shaped end of the fisheye rod 509); the other end of the fisheye rod 509 is rotatably mounted on the connecting plate 501 through a bolt. The first steering bearing 5010 and the second steering bearing 5011 are ball bearings.

Further, ball bearings are mounted on the inner sides of the top and bottom of the steering sleeve 502; the drag link 503 is fixed in the ball bearing and can rotate in the ball bearing (reduce the friction between the steering sleeve 502 and the drag link 503).

As shown in fig. 1, 2, 4 and 5, the damping system is composed of a front damping mechanism and a rear damping mechanism.

As shown in fig. 4, the front shock absorbing mechanism 6 is composed of an adjusting plate 601, a first swing bearing 603, a first cross bar 604, a first shock absorber 605, a first shock absorbing spring 606 and a first return spring 607; the upper end of the adjusting plate 601 is fixed on the steering sleeve 502, the lower end of the adjusting plate is fixed on the top of the front frame body 101, and an adjusting groove 602 is longitudinally arranged on the adjusting plate 601; the first oscillating bearing 603 is fastened on the adjusting plate 601 through a bolt passing through the adjusting groove 602, and the first oscillating bearing 603 can move up and down along the adjusting groove 602 under the condition that the bolt is loosened; the middle part of the first cross rod 604 is fixed at the bottom side of the first oscillating bearing 603 and is parallel to a central connecting line of the two front wheels 4, and the two ends of the first cross rod 604 are respectively positioned above the two front suspensions 9; the number of the first shock absorbers 605 is two, the first shock absorbers are respectively and correspondingly arranged above the two front suspensions 9 (the first shock absorbers 605 adopt conventional shock absorbers for electric vehicles), the upper ends of the first shock absorbers 605 are hinged to one end of a cross bar 604, and the other ends of the first shock absorbers are hinged to the parts, close to the front wheels 4, of a lower rocker arm 903; the shock absorbing spring I606 is sleeved outside the shock absorber I605, and the upper end and the lower end of the shock absorbing spring I are respectively fixed on the top side and the bottom side of the shock absorber I605; the number of the first return springs 607 is two and the first return springs 607 are respectively and correspondingly arranged above the two front suspensions 9 (for assisting the return operation after the two front suspensions 9 and the front damping mechanism 6 are deflected), the upper ends of the first return springs 607 are fixed at the end parts of the first cross rods 604, and the other ends of the first return springs 607 are fixed at the bottom of the front frame body 101. The first oscillating bearing 603 is a ball bearing.

As shown in fig. 5, the rear shock absorbing mechanism 7 is composed of a second swing bearing 701, a second cross bar 702, a second shock absorber 703, a second shock absorbing spring 704 and a second return spring 705; the second swing bearing 701 is vertically arranged on one frame rod of the rear frame body 103, is vertical to the rear wheel shaft 1001 and is positioned above the two rear suspensions 10; the second cross rod 702 is transversely fixed on the second swing bearing 701 and is parallel to a central connecting line of the two rear wheels 8, and two ends of the second cross rod 702 are respectively positioned above the two rear suspensions 10; the two second shock absorbers 703 are respectively and correspondingly arranged above the two rear suspensions 10 (the second shock absorbers 703 adopt conventional shock absorbers for electric vehicles), the upper ends of the second shock absorbers 703 are hinged to one end of the second cross rod 702, and the other ends of the second shock absorbers 703 are hinged to the part of the second lower rocker 1003, which is close to the rear wheels 8; the second shock absorbing spring 704 is sleeved outside the second shock absorber 703, and the upper end and the lower end of the second shock absorbing spring 704 are respectively fixed on the top side and the bottom side of the second shock absorber 703; the two second return springs 705 are respectively and correspondingly arranged above the two rear suspensions 10, the lower ends of the two second return springs 705 are fixed to the end portions of the second crossbars 702, and the other ends of the two second return springs are fixed to the top of the rear frame body 103 (for assisting the return operation of the two rear suspensions 10 and the rear shock absorption mechanism 7 after deflection). The second oscillating bearing 701 is a ball bearing.

Fig. 8 is a schematic structural diagram of the bicycle in different terrains, when the rear suspension 10 is automatically deformed to adapt to the terrains:

fig. a is a schematic view showing the structure of the rear suspension 10 and the rear suspension 7 when traveling on a horizontal straight road.

Fig. b is a diagram of adaptive deformation of the rear suspension 10 and the rear shock absorption mechanism 7 when one rear wheel 8 of the bicycle encounters a step or an obstacle, in the diagram, the left rear wheel 8 is lifted, the left upper rocker arm two 1002 and the left lower rocker arm two 1003 are lifted along with the lifting of the left rear wheel 8, the lower rocker arm two 1003 is lifted, meanwhile, the shock absorber two 703 on the left side of the rear shock absorption mechanism 7 is synchronously pushed to lift, the left end of the cross bar two 702 is pushed to move upwards, the cross bar two 702 rotates around the swing bearing two 701, the right rear wheel 8 horizontally lands, the downward rotation of the right upper rocker arm two 1002 and the right lower rocker arm two 1003 is limited, and the shock absorber two 703 on the right side of the rear shock absorption mechanism 7 rotates towards the left side along with the horizontal grounding of. After the step or the obstacle is fallen, the rear suspension 10 and the rear shock absorbing mechanism 7 are reset to the state shown in the figure a under the self-gravity of the rear wheel 8 and the action of the second return spring 705.

And c, the self-adaptive deformation diagram of the rear suspension 10 and the rear damping mechanism 7 when the bicycle passes through a curve in the running process, and the diagram c shows that the frame deflects leftwards due to the action of centrifugal force when the bicycle turns leftwards, the rear suspension and the rear wheel deflect leftwards, part of the centrifugal force is converted into pressure on the ground, the ground gripping force of the wheels is increased, and the bicycle body is prevented from sliding out of the road surface. Similarly, after the road surface is normal (the road surface is flat), the rear suspension 10 and the rear shock absorbing mechanism 7 are reset to the state shown in the figure a under the self-gravity of the rear wheel 8 and the action of the second return spring 705.

Similarly, the adaptive principle of the front wheel 4 and the front suspension 9 is similar to that of the configuration shown in fig. 8.

Further, the electric drive device is composed of a battery and a transmission mounted in the rear frame body 103, a drive motor built in the rear wheel 8, a power switch mounted outside the steering sleeve 502, and a shift control switch mounted on the steering handle 504. Of course, accessories such as vehicle lamps and the like can be added correspondingly. The circuit diagram is shown in fig. 9.

As shown in fig. 10, the manual driving apparatus includes a bearing housing 1101, a driving shaft 1102, a rotating arm 1103, a driving gear 1104, a driven shaft 1106, a driven gear 1107, a driving chain 1108, a flywheel 1109, a sprocket 1112, a driven chain 1110, and a wheel housing 1113; the bearing sleeve 1101 is a hollow pipe body which is fixed at the bottom of the main frame 102 and is internally provided with a bearing; the driving shaft 1102 is installed in the bearing sleeve 1101 and can rotate, and two ends of the driving shaft 1102 extend out of the bearing sleeve 1101; the number of the rotating arms 1103 is two, one end of each rotating arm is fixed to two ends of the driving shaft 1102, and an included angle between the two rotating arms 1103 is 180 degrees; the number of the pedals 3 is two, and the two pedals are respectively arranged at the other end of the rotating arm 1103; the driving gear 1104 is fixed on one end of the driving shaft 1102 and can rotate; the driven shaft 1106 is rotatably arranged at the front side of the bottom of the rear frame body 103 through a bearing seat 1105; the driven gear 1107 is fixed on the driven shaft 1106 and is positioned on the same plane with the driving gear 1104; one end of the driving chain 1108 (an annular closed chain) is mounted (meshed) on the driving gear 1104, and the other end is mounted on the driven gear 1107; the number of the flywheels 1109 is two and the flywheels are respectively arranged at two ends of the driven shaft 1106; the number of the chain wheels 1112 is two, the two chain wheels 1112 are respectively arranged on the two wheel sleeves 1113, and the chain wheels 1112 and the flywheel 1109 which are positioned on the same side of the frame 1 are positioned on the same plane; one end of the driven chain 1110 (annular closed chain) is mounted (meshed) on the flywheel 1109, and the other end is mounted on the chain wheel 1112; the wheel sleeve 1113 is sleeved on the rear wheel shaft 1001 and can rotate (a bearing is also arranged in the wheel sleeve 1113, the rear wheel shaft 1001 is fixed in an inner ring of the bearing), and the outer side of the wheel sleeve 1113 is fixedly connected with the rear wheel 8. The manual driving device and the electric driving device can be independent or separated. The pedal is trampled ceaselessly by the foot of a person, the driving shaft 1102 and the driving gear 1104 are driven to rotate, the driving chain 1108 is used for transmission, the driven gear 1107 and the driven shaft 1106 rotate, the two flywheels 1109 are driven to rotate, the chain wheel 1112 rotates along with the driven chain 1110, the wheel sleeve 1113 of the rear wheel 8 fixedly connected with the chain wheel is driven to rotate along with the chain wheel, and the rear wheel 8 rotates along with the wheel sleeve 1113 in a synchronous mode when the wheel sleeve 1113 rotates.

Further, the manual driving device further comprises an automatic chain tensioner 1111 (which adopts a currently common automatic chain tensioner); the upper end of the automatic chain tensioner 1111 is installed at the bottom of the rear frame 103 and located between the flywheel 1109 and the chain wheel 1112, and the lower end of the automatic chain tensioner 1111 is provided with a tightening gear clamped at the bottom of the driven chain 1110.

The scope of the present invention is not limited to the technical solutions disclosed in the embodiments, and any modifications, equivalent substitutions, improvements, etc. made to the above embodiments according to the technical spirit of the present invention fall within the scope of the present invention.

Claims

1. An inclined four-wheel bicycle comprises a frame, a steering system, a damping system, a power system, a braking system, a pair of front wheels and a pair of rear wheels, wherein the frame is composed of a front frame body, a main frame body and a rear frame body; the upper part of the main frame body is provided with a cushion, and the lower part of the main frame body is provided with a pedal; the method is characterized in that: the front suspension frame is provided with a pair of front suspension frames which are respectively arranged at two sides of the front frame body and a pair of rear suspension frames which are respectively arranged at two sides of the rear frame body; the front suspension consists of a front wheel shaft, an upper rocker arm I and a lower rocker arm I; the front wheel shaft is provided with a front wheel; one end of the upper rocker arm I is hinged to the side face of the upper part of the front frame body, and the other end of the upper rocker arm I is hinged to the upper part of the front wheel shaft; the lower rocker arm I is positioned below the upper rocker arm, one end of the lower rocker arm I is hinged to the side surface of the lower part of the front frame body, and the other end of the lower rocker arm I is hinged to the lower part of the front wheel shaft; the rear suspension consists of a rear wheel shaft, an upper rocker arm II and a lower rocker arm II; the rear wheel shaft is provided with a rear wheel; one end of the upper rocker arm II is hinged to the side face of the upper part of the rear frame body, and the other end of the upper rocker arm II is hinged to the upper part of the rear wheel shaft; the lower rocker arm II is positioned below the upper rocker arm II, one end of the lower rocker arm II is hinged to the side face of the lower part of the rear frame body, and the other end of the lower rocker arm II is hinged to the lower part of the rear wheel shaft.

2. A tilting quadricycle according to claim 1, wherein: the main frame body is of a pi-shaped structure.

3. A tilting quadricycle according to claim 1, wherein: the upper rocker arm I and the upper rocker arm II are both of U-shaped structures; the lower rocker arm I and the lower rocker arm II are both of V-shaped structures.

4. A tilting quadricycle according to any one of claims 1 to 3, wherein: the steering system consists of a connecting plate, a steering sleeve, a steering longitudinal pull rod, a steering handle, a central rocker arm, a steering tie rod, a universal joint and a fisheye rod; the two connecting plates are respectively fixed on the two front wheel shafts; the steering sleeve is a hollow cylinder body of which the outer wall is fixed at the rear side of the top of the front frame body; the steering longitudinal pull rod is vertically sleeved in the steering sleeve and can rotate in the steering sleeve, the upper end and the lower end of the steering longitudinal pull rod extend out of the steering sleeve, and the outer side of the steering longitudinal pull rod is provided with an annular block for limiting the longitudinal movement of the steering longitudinal pull rod in the steering sleeve; the steering handle is transversely fixed at the top of the steering longitudinal pull rod; the central rocker arm is vertically fixed at the bottom of the steering longitudinal pull rod, and a first steering bearing is sleeved at the end part of the central rocker arm; the upper end of the steering arm is longitudinally fixed at the bottom of the first steering bearing and can rotate along with the first steering bearing, and the lower end of the steering arm is sleeved with a second steering bearing; the middle part of the steering tie rod is transversely fixed on the two sides of the steering bearing and can rotate along with the steering bearing II; two ends of the steering tie rod are respectively connected with one end of a universal joint; the other end of the universal joint is connected with one end of the fisheye rod respectively; the other end of the fisheye rod is rotatably arranged on the connecting plate through a bolt.

5. A tilting quadricycle according to claim 4, wherein: ball bearings are arranged on the inner sides of the top and the bottom of the steering sleeve; the steering longitudinal pull rod is sleeved and fixed in the ball bearing and can rotate in the ball bearing.

6. A tilting quadricycle according to claim 4, wherein: the damping system consists of a front damping mechanism and a rear damping mechanism; the front damping mechanism is composed of an adjusting plate, a swing bearing I, a cross rod I, a shock absorber I, a shock absorbing spring I and a return spring I; the upper end of the adjusting plate is fixed on the steering sleeve, the lower end of the adjusting plate is fixed on the top of the front frame body, and an adjusting groove is longitudinally formed in the adjusting plate; the first oscillating bearing is fastened on the adjusting plate through a bolt penetrating through the adjusting groove, and can move up and down along the adjusting groove under the condition that the bolt is loosened; the middle part of the cross rod I is fixed at the bottom side of the swing bearing and is parallel to the central connecting line of the two front wheels, and two ends of the cross rod I are respectively positioned above the two front suspensions; the number of the first shock absorbers is two, the first shock absorbers are respectively and correspondingly arranged above the two front suspensions, the upper end of each shock absorber is hinged to one end of the corresponding cross rod, and the other end of each shock absorber is hinged to a position, close to the front wheel, of the corresponding lower rocker arm I; the shock absorption spring is sleeved outside the first shock absorber, and the upper end and the lower end of the shock absorption spring are respectively fixed on the top part and the outer side of the bottom part of the first shock absorber; the number of the first reset springs is two, the first reset springs are respectively and correspondingly arranged above the two front suspension frames, the upper ends of the first reset springs are fixed at one end part of the cross rod, and the other ends of the first reset springs are fixed at the bottom of the front frame body; the rear damping mechanism consists of a second oscillating bearing, a second cross rod, a second damper, a second shock absorption spring and a second reset spring; the swing bearing II is vertically arranged on one frame rod of the rear frame body, is vertical to the rear wheel shaft and is positioned above the two rear suspension frames; the second cross rod is transversely fixed on the second oscillating bearing and is parallel to a central connecting line of the two rear wheels, and two ends of the second cross rod are respectively positioned above the two rear suspensions; the two second shock absorbers are correspondingly arranged above the two rear suspensions respectively, the upper ends of the second shock absorbers are hinged to one end of the second cross rod, and the other ends of the second shock absorbers are hinged to the position, close to the rear wheel, of the second lower rocker arm; the shock absorption spring is sleeved outside the shock absorber, and the upper end and the lower end of the shock absorption spring are respectively fixed on the top part and the outer side of the bottom part of the shock absorber; the two second reset springs are respectively and correspondingly arranged above the two rear suspension frames, the lower ends of the second reset springs are fixed at the two end parts of the cross rod, and the other ends of the second reset springs are fixed at the top of the rear suspension frame.

7. A tilting quadricycle according to claim 4, wherein: the power system is a manpower driving device or an electric driving device.

8. A tilting quadricycle according to claim 6, wherein: the electric driving device consists of a storage battery and a speed changer which are arranged in the rear frame body, a driving motor which is arranged in the rear wheel, a power switch which is arranged outside the steering sleeve and a speed change control switch which is arranged on the steering handle.

9. A tilting quadricycle according to claim 6, wherein: the manual driving device comprises a bearing sleeve, a driving shaft, a rotating arm, a driving gear, a driven shaft, a driven gear, a driving chain, a flywheel, a chain wheel, a driven chain and a wheel sleeve; the bearing sleeve is a hollow pipe body which is fixed at the bottom of the main frame and is internally provided with a bearing; the driving shaft is arranged in the bearing sleeve and can rotate, and two ends of the driving shaft extend out of the bearing sleeve; the number of the rotating arms is two, one end of each rotating arm is fixed at the two ends of the driving shaft, and the included angle between the two rotating arms is 180 degrees; the number of the pedals is two, and the pedals are respectively arranged at the other end of the rotating arm; the driving gear is fixed on one end of the driving shaft and can rotate; the driven shaft is rotatably arranged on the front side of the bottom of the rear frame body through a bearing seat; the driven gear is fixed on the driven shaft and is positioned on the same plane with the driving gear; one end of the driving chain is arranged on the driving gear, and the other end of the driving chain is arranged on the driven gear; the number of the flywheels is two, and the flywheels are respectively arranged at two ends of the driven shaft; the number of the chain wheels is two, the chain wheels are respectively arranged on the two wheel sleeves, and the chain wheels positioned on the same side of the frame and the flywheel are positioned on the same plane; one end of the driven chain is arranged on the flywheel, and the other end of the driven chain is arranged on the chain wheel. The manpower driving device and the electric driving device can exist independently or separately; the wheel sleeve is sleeved on the rear wheel shaft and can rotate, and the outer side of the wheel sleeve is fixedly connected with the rear wheel.

10. A tilting quadricycle according to claim 9, wherein: the manual driving device also comprises an automatic chain tensioner; the upper end of the automatic chain tensioner is arranged at the bottom of the rear frame body and is positioned between the flywheel and the chain wheel, and the lower end of the automatic chain tensioner is provided with a tightening gear clamped at the bottom of the driven chain.