CN109018085B

CN109018085B - Small swing angle and fork rod supporting type supporting leg device for single front wheel vehicle

Info

Publication number: CN109018085B
Application number: CN201810586228.1A
Authority: CN
Inventors: 李锋运
Original assignee: 李锋运
Current assignee: Shanghai Hengji Advertising Co.,Ltd.
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2020-06-12
Anticipated expiration: 2038-06-06
Also published as: CN109018085A

Abstract

The invention relates to the technical field of two-wheeled vehicles and two-wheeled cars, in particular to a small swing angle and fork rod supporting type supporting leg device for a single front-wheel vehicle, which is used for being installed on two sides of an original two-wheeled vehicle body and used for safe driving. The supporting leg device is mainly composed of four parts of a small swing angle and crotch rod supporting type supporting leg mechanism, a swing sole mechanism, a supporting leg upper swing traction mechanism and a supporting leg locking and unlocking mechanism. The pawl type retaining body retaining mechanism can ensure that all supporting legs reliably contact the ground under the condition of uneven ground, the parking is stable, the inertial body locking and unlocking mechanism can be operated without people, and the supporting legs are automatically unlocked, so that the safe operation is more reliable. The device of the invention can make the two-wheel power-assisted vehicle and the two-wheel car extend out of the supporting feet on the two sides of the vehicle to support the vehicle when the two-wheel power-assisted vehicle and the two-wheel car run at high speed to bump the vehicle or brake the vehicle emergently to stop, so as to stop the vehicle stably and greatly reduce the vicious traffic accidents of the two-wheel vehicle.

Description

Small swing angle and fork rod supporting type supporting leg device for single front wheel vehicle

Technical Field

The invention relates to the technical field of two-wheel vehicles and two-wheel cars, in particular to a small swing angle and fork rod supporting type supporting leg device for a single front wheel vehicle.

Background

Currently, the most used passenger vehicles are open-type two-wheel power vehicles, called "two-wheel-assisted vehicles". The two-wheel moped can be overturned as soon as the two-wheel moped is collided, so that the two-wheel moped is a malignant accident, is the most unsafe passenger car and has great social harm. The millions of two-wheel moped families urgently need a two-wheel moped which is safe in driving and does not overturn during bumping, but the supply side is seriously lacked, which is the practical background of the two-wheel moped. On the other hand, in a large city, the number of cars is large, which is a main cause of traffic jam, haze and difficulty in parking, and the serious traffic problem is one of the biggest problems in city development. Most of the five-seat cars are private cars, the riding rate is extremely low, most of the five-seat cars are 1-2 individuals, and the waste is serious. A novel two-wheel car is a two-wheel power car with three performances of a closed, high-speed and safe car, and can be used for riding 1-2 adults and a child. The five-seat car is mainly replaced by two-seat and half-seat (child) cars according to the traffic characteristics of urban roads and the comprehensive performance of two-wheel cars. Because the two wheels are also used when the two-wheel car runs at high speed, the two-wheel car also depends on the solution of the running safety of the two-wheel car. The invention relates to a method for solving the driving safety of a two-wheel moped, which comprises two methods, namely, arranging supporting legs and installing a box cover, wherein the supporting legs are used for solving the problem of rollover of the two-wheel vehicle running at a high speed, and the installing of the box cover is used for further safety protection of the two-wheel vehicle.

Disclosure of Invention

The invention aims to solve the problems of easy turnover and frequent occurrence of serious traffic accidents of the existing two-wheeled vehicle, and adopts a method of mounting the supporting foot bodies on the two sides of the vehicle body to ensure that the supporting foot bodies immediately extend out and support the vehicle body when the two-wheeled vehicle running at high speed collides with the vehicle or is braked to stop the vehicle emergently so as to realize stable parking.

In order to achieve the purpose, the small swing angle and fork rod supporting type supporting leg device for the single front wheel vehicle comprises a vehicle body, wheels, a traveling motor and a controller, wherein one end of a supporting leg body is respectively and rotatably connected with two sides of the vehicle body, one end of the supporting leg body is connected with one end of a first reel spring, the other end of the first reel spring which is screwed is fixedly connected with the vehicle body, so that the first reel spring which is screwed exerts a downward swinging acting force on the supporting leg body, when the supporting leg body is in a horizontal position, an arc-shaped supporting fork rod which extends upwards is arranged on the upper side face of the other end of the supporting leg body, a section of ratchet-shaped concave-convex face is arranged on the supporting fork rod, a fork rod supporting frame is fixedly arranged on the vehicle body, the supporting rod penetrates through the fork rod supporting frame, a stopping body swing shaft is arranged on the vehicle body, a stopping body swing shaft which is provided with a stopping body and a stopping body tail which can swing around the axial lead of the stopping body swing shaft, the end part of the retaining body is in a pawl shape and can be effectively engaged with or separated from a ratchet-shaped concave-convex surface on the supporting fork rod through swinging, the tail of the retaining body is connected with one end of a first tension spring, the other end of the first tension spring is fixed on a vehicle body, a first electromagnet is further arranged on the vehicle body, the first electromagnet is connected with the tail of the retaining body through a first connecting rope, the first electromagnet can drive the first connecting rope to move under the action of electromagnetic force so as to enable the tail of the retaining body to rotate, further the engagement condition between the retaining body and the supporting fork rod and the motion constraint on the supporting fork rod are changed, when the tail of the retaining body is pulled by the electromagnetic attraction of the first electromagnet to enable one end of the retaining body to be disengaged from the concave-convex surface through swinging, the supporting fork rod can move downwards or upwards, and when the first electromagnet is powered off, when the electromagnetic attraction of the first electromagnet disappears, the first tension spring on the other side of the backstop body tail pulls the backstop body tail and the backstop body to swing together, so that one end of the backstop body is meshed with the concave-convex surface, and at the moment, the backstop body does not prevent the support fork rod from moving downwards but prevents the support fork rod from moving upwards.

And a retaining body stop pin is arranged on one side of the tail of the retaining body and used for limiting the swing angle of the retaining body.

The supporting leg device further comprises a swinging sole mechanism, and the swinging sole mechanism is as follows: the supporting legs in be equipped with the opening and be in the hole of the supporting legs body other end, the hole be used for connecting sole balance staff and the outer end of sole balance staff stretch out outside the hole the surface of sole balance staff be equipped with the circumference groove, be equipped with a perforation just to the circumference groove on the wall of the supporting legs body for this perforation on the wall that supplies the locating pin to pass the supporting legs body stretches into the circumference inslot, makes the sole balance staff can rotate in the hole of the supporting legs body, but can not follow axial displacement the outer end of sole balance staff be equipped with the sole of perpendicular to sole balance staff, the sole tip be equipped with the sole wheel, supporting legs body and sole between be connected with the second spool spring of screwing, so that the second spool spring is exerted one and is made the sole outwards swing to the car body side to make the sole can stretch out the car body side, and the other end of the supporting foot body is also provided with a pendulum stopping tile block for limiting the swinging angle of the sole.

The sole on be equipped with the perforation that radially parallels with the sole wheel for the one end that supplies an N shape balance staff passes, the other end of N shape balance staff be equipped with the auxiliary wheel, and the one end of N shape balance staff is equipped with a balance staff linkage disk, the circumference of balance staff linkage disk on be fixed with the one end of stay cord just the stay cord warp the outer end of balance staff linkage disk link to each other through an auxiliary wheel extension spring and sole balance staff behind the most half circumference, so that the auxiliary wheel extension spring can exert the effort that makes the auxiliary wheel swing downwards to N shape balance staff.

And a swing shaft stop pin is arranged on the sole of the foot close to the lower part of the middle section of the N-shaped swing shaft, and the auxiliary wheel is lower than the sole wheel before the N-shaped swing shaft touches the swing shaft stop pin.

The supporting leg device further comprises a supporting leg upper swing traction mechanism, and the supporting leg upper swing traction mechanism is as follows: the vehicle body is provided with a vehicle bottom box, a rope tidying device body is further arranged in the vehicle bottom box, a rope tidying device cavity is arranged in the rope tidying device body, the front end of the rope tidying device cavity is provided with a traction rope inlet and outlet, the height of the rope tidying device cavity 86 is slightly larger than the diameter of the traction rope, a traction rope push-pull plate is arranged in the rope tidying device cavity, a fourth rope joint is arranged on the traction rope push-pull plate, bearing seats with bearings are respectively arranged on the upper sides of the two ends of the rope tidying device, long screw rods are arranged on the two bearing seats, large nuts matched with the long screw rods are arranged on the long screw rods, the rear ends of the long screw rods extend out of the bearing seats and are in transmission fit with a motor to realize torque transmission, a long hole seam is further arranged on the upper portion of the rope tidying device body and used for a connecting plate to penetrate through and enable the large nuts to be connected with the traction rope push-pull plate, a lower fixed pulley is arranged below the upper fixed pulley, one side of the lower fixed pulley is horizontally provided with a sliding pin guide tube which is consistent with the front and back directions of the vehicle body, the inside of the sliding pin guide tube is connected with a cone head waist groove sliding pin, one end of the sliding pin guide tube is directly communicated with a traction rope inlet and outlet of the rope tidying device cavity, two ends of the cone head waist groove sliding pin are respectively provided with a second rope joint and a third rope joint, the rear section of the traction rope is connected with the third rope joint and a fourth rope joint, one end of the front section of the traction rope is connected with the second rope joint, the other end of the front section of the traction rope penetrates out of the sliding pin guide tube and sequentially bypasses the lower pulley and the upper pulley from bottom to top, downwards bypasses the lower side surface of the supporting foot body from the inner side of the supporting foot body and then is connected with the sole at the outer end of the sole swinging shaft, so that the traction rope can generate a twisting force on the sole swinging shaft in the tangential circumferential direction of the supporting foot, and further the sole and the supporting foot body swing upwards and rotate downwards. And a supporting leg stop pin is arranged on the vehicle body and used for limiting the lifting height of the supporting leg.

The supporting leg device further comprises a supporting leg locking and unlocking mechanism, and the supporting leg locking and unlocking mechanism is as follows: when the conical head waist groove pin is positioned at a position contacting with the stroke electric switch, a pin hole is arranged on the pipe wall at the upper side of the sliding pin guide pipe, an L lever which is horizontally vertical to the pendulum shaft of the sliding pin guide pipe and can swing around the pendulum shaft of the L lever are arranged on the vehicle body at the upper side of the sliding pin guide pipe, a lock pin is arranged at the end part of the front end of the L lever and is aligned with the pin hole, a guide sleeve and a second electromagnet which are in parallel with the direction of the sliding pin guide pipe are arranged on the vehicle body at one side of the rear section of the L lever, a frictional body is arranged in the guide sleeve, the frictional body can slide back and forth in the guide sleeve, the frictional body and the second electromagnet are respectively connected with the rear section of the L lever through connecting ropes, a second tension spring at the rear section of the L lever and at the other side of the rear section of the L lever is connected with the vehicle body, the inertia body, the second electromagnet and the second tension spring are used for realizing the swinging of the L lever, and the lock pin can penetrate through the lock pin hole to be inserted into or pulled out of the waist groove of the cone head waist groove slide pin through the swinging of the L lever so as to lock and unlock the cone head waist groove slide pin.

One end of the backstop body, close to one side of the first tension spring, is provided with a first stop pin electric switch for providing a working signal for the motor, and the upper side of the front section of the L lever is provided with a second stop pin electric switch for providing a working signal for the second electromagnet.

The supporting leg device comprises a front supporting leg device and a rear supporting leg device, the supporting leg body is arranged on the front side of the supporting leg swing shaft and is the front supporting leg device, and the supporting leg body is arranged on the rear side of the supporting leg swing shaft and is the rear supporting leg device.

The invention has the beneficial effects that: .

(1) The device of the invention can ensure that the two-wheel power-assisted vehicle and the two-wheel car can be stably stopped when the two-wheel power-assisted vehicle and the two-wheel car run at high speed and collide with the vehicle or are stopped by emergency braking, thereby greatly reducing the vicious traffic accidents of the two-wheel vehicle. The device has the great beneficial effect that the number of the two-wheel mopeds is large, and the malignant traffic accidents caused by the two-wheel mopeds have great harm to the society.

(2) The structure of the device for two-wheel narrow body driving and multi-wheel wide support parking enables the two-wheel car to be made into an ultra-narrow, ultra-low and ultra-light body under the condition of achieving the high speed, safety and sealing performance of a four-wheel car, and has the advantages of low manufacturing cost, small wind resistance and energy conservation; the car is small and flexible, and the parking is convenient.

(3) Traffic jam and safety are one of the biggest problems in city development, and some big cities have limited car departure days at present. The five-seat car mostly takes 1-2 persons, which is just the passenger capacity of the two-wheel car, and the two-wheel car has high comprehensive social benefit, and most of the two-wheel car can replace the five-seat car, so that the problems of traffic jam relief, difficulty in parking in cities, haze reduction and other urban development are solved by the two-wheel car.

(4) The device of the invention can lead the driving safety of the two-wheeled car to reach the standard and get the road certificate.

Drawings

Fig. 1 is a partial sectional view taken along line a-a of fig. 2.

Fig. 2 is a partial sectional view taken along line B-B of fig. 1.

Fig. 3 is a partial sectional view taken along line C-C of fig. 1.

In the figure: 1. a supporting foot body, 2, a sole swing shaft, 3, a first electromagnet, 4, an indicator light, 5, a supporting fork rod, 6, a concave-convex surface, 7, a fork rod supporting frame, 8, a first connecting rope, 9, a backstop tail, 10, a backstop stop pin, 11, a backstop swing shaft, 12, a first tension spring, 13, a first tension spring seat, 14, a backstop body, 15, a stop pin electric switch I, 16, an upper pulley, 17, a supporting leg stop pin, 18, a backstop block, 19, a front fork, 20, a supporting leg, 21, a first rope joint, 22, a sole, 23, a second coil spring rear seat, 24, a sole wheel shaft, 25, a sole wheel, 26, a swing shaft stop pin, 27, an N-shaped swing shaft, 28, a front wheel, 29, an auxiliary wheel, 30, a lower pulley, 31, a traction rope front section, 32, a sliding pin guide pipe, 33, a second reel spring, 34, a second coil spring front seat, 35, a circumferential groove, 36, a positioning pin, 37. a swing shaft sleeve 38, a supporting foot swing shaft 39, a second rope joint 40, a cone head waist groove sliding pin 41, a third rope joint 42, a travel electric switch I43, a traction rope rear section 44, a long hole seam 45, a rope tidying device body 46, a fourth rope joint 47, a traction rope push-pull plate 48, a large nut 49, a connecting plate 50, a long screw rod 51, a bearing seat 52, a chain wheel 53, a chain 54, a motor 55, a rear wheel 56, a traveling motor 57, a vehicle body 57, a time delay device 58, a controller 59, a cable 60, a battery 61, a travel electric switch II 62, a travel electric switch 63, a vehicle bottom box 64, a locking pin hole 65, a locking pin 66, a second pull spring seat 67, a second tension spring 68, a locking pin II, a locking pin 69, an L lever 70, a second connecting rope 71, a third connecting rope 72, an L lever swing shaft 74, a second crab claw frame 74, 75. inertia body, 76, inertia body, 77, speed-regulating handle, 78, unlocking electric twist, 79, brake handle, 80, steering handle, 81, locking electric twist, 82, front seat of the first spring, 83, back seat of the first spring, 84, spring of the first reel, 85, bell mouth of the rope arranger, 86, cavity of the rope arranger, 88, joint of pull rope, 89, pull rope, 90, spring seat of auxiliary wheel, 92, crab claw frame connecting rod.

Detailed Description

The construction and principles of such a device will be apparent to those skilled in the art from the following further description of the invention taken in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present embodiment discloses a small swing angle and fork rod supporting type supporting leg device for a single front wheel vehicle, which is used for being installed on two sides of an original two-wheel vehicle body for safe driving. The supporting leg device is mainly composed of four parts of a small swing angle and crotch rod supporting type supporting leg mechanism, a swing sole mechanism, a supporting leg upper swing traction mechanism and a supporting leg locking and unlocking mechanism.

The specific structure of the small swing angle and fork rod supporting type supporting foot mechanism is that supporting foot swing shafts 38 which are approximately vertical to the side surface of the vehicle body 57 are respectively arranged at the positions of the two sides of the vehicle body 57 which are approximately at the bottom of the vehicle, then a swing shaft sleeve 37 is sleeved on the supporting foot swing shafts 38, a first reel spring 84 is sleeved at the inner end of the swing shaft sleeve 37, the supporting foot body 1 is tightly attached to the swing shaft sleeve 37 through the first reel spring 84, one end of the supporting foot body 1 which is similar to a straight leg of a person is used for installing the supporting foot body 1 on the swing shaft sleeve 37, and the other end of the supporting foot body 1 is a free end. A sole 22 for contacting the ground is attached to the free end of the supporting foot body 1. For convenience of description, the supporting leg body 1, the sole 22, and the member integrally connected to the supporting leg body 1 and the sole 22 are collectively referred to as a supporting leg 20. When the supporting leg body 1 is in a horizontal position, an arc-shaped supporting fork rod 5 which is approximately vertical to the supporting leg body 1 is arranged on the upper side surface of the supporting leg body 1 which is close to the free end of the supporting leg body 1, and the circle center of the arc-shaped supporting fork rod 5 is the axial lead of the supporting leg pendulum shaft 38. The surface of the supporting fork rod 5 with proper length is arranged into a concave-convex surface 6 similar to a ratchet, and the proper length of the concave-convex surface 6 on the supporting fork rod 5 is determined by the function of the vehicle for adapting to the uneven ground with high bottom. And then the fork rod supporting frame 7 is fixedly arranged on the auxiliary crab claw frame 73 of the vehicle body 57, and the supporting fork rod 5 penetrates through the fork rod supporting frame 7, so that the fork rod supporting frame 7 can guide the supporting fork rod 5 and increase the stability of the supporting fork rod 5 without influencing the trafficability of the supporting fork rod 5 in the fork rod supporting frame 7. The crab claw frame 73 is a vehicle body accessory which is fixedly arranged on the two sides of the vehicle head and is shaped like crab claws. The supporting foot body 1, the sole 22 and the components which are integrally connected with the supporting foot body 1 and the sole 22 can swing together around the axis of the supporting foot swing shaft 38 at a small angle, and the small-angle swing refers to that when the supporting foot body 1, the sole 22 and the components which are integrally connected with the supporting foot body 1 and the sole 22 swing together around the axis of the supporting foot swing shaft 38, the included angle between the central line of the supporting foot body 1 and the horizontal plane is less than 90 degrees. In addition, a retaining body swing shaft 11 is arranged at a proper position of the vehicle body 57 close to the concave-convex surface 6 on the support fork rod 5 or a proper position of an accessory of the vehicle body 57 close to the concave-convex surface 6 on the support fork rod 5, a retaining body 14 similar to a pawl and capable of swinging around the axial lead of the retaining body swing shaft 11 and a retaining body tail 9 are arranged on the retaining body swing shaft 11, and the retaining body 14 arranged on the retaining body swing shaft 11 can be effectively engaged with or separated from the concave-convex surface 6 on the support fork rod 5 through swinging. A first tension spring seat 13 is also arranged on the crab claw frame 73 on one side of the backstop body tail 9, one end of a first tension spring 12 is fixed on the first tension spring seat 13, and the other end of the first tension spring 12 is fixed on the backstop body tail 9. And the first electromagnet 3 is arranged on the crab claw frame 73 on the other side of the stopping body tail 9, the electromagnet is a magnet body wrapped with an electric coil, and the magnet body wrapped in the electric coil can move in a short distance under the action of the electromagnetic force of the electric coil. And then the first electromagnet 3 arranged on the crab claw frame 73 is connected with the backstop body tail 9 through a first connecting rope 8. When the retaining body tail 9 is pulled by the electromagnetic attraction of the first electromagnet 3 to swing to separate the retaining body 14 integrated with the retaining body tail 9 from the concave-convex surface 6, the support fork rod 5 and the member integrated with the support fork rod 5 can smoothly move downwards or upwards, and when the retaining body 14 is just separated from the concave-convex surface 6, a retaining pin electric switch 15 is installed on the crab claw frame 73 closely attached to the retaining body 14 for switching the operation. When the first electromagnet 3 is powered off and the electromagnetic attraction of the first electromagnet 3 disappears, the first tension spring 12 on the other side of the backstop body tail 9 pulls the backstop body tail 9 and the backstop body 14 to swing together, so that the backstop body 14 touches and presses the concave-convex surface 6 with proper force and angle, and at this time, the support fork rod 5 and the part connected with the support fork rod 5 into a whole can smoothly move downwards but cannot move in the opposite direction. When the retaining body 14 is in a position where the concave-convex surface 6 is pressed with proper force and angle, a retaining body retaining pin 10 is further installed on the crab claw frame 73 closely attached to the retaining body tail 9 for limiting the swing angle of the retaining body 14. With respect to the first spool spring 84 fitted around the inner end of the swing sleeve 37, one end of the first spool spring 84 is fixed to the vehicle body 57 or an accessory of the vehicle body 57 by the first spool spring front mount 82, and then the first spool spring 84 is wound and the other end of the first spool spring 84 is fixed to the leg body 1 by the first spool spring rear mount 83, so that the wound first spool spring 84 exerts a downward swinging force on the leg body 1. In addition, for the requirement of changing the action program of each component in the small swing angle and fork lever supporting type supporting leg device, a program controller 59, a cable 60, a locking electric button 81 for locking or unlocking the supporting leg body 1 and the component connected with the supporting leg body 1 into a whole, an unlocking electric button 78 and a stop pin electric switch 15 are also arranged in the mechanism. The electric switch of the stop pin is arranged on the stop pin, wherein the stop pin is a cylindrical part which is fixed on the crab claw frame 73 and stops the supporting fork rod 5.

The free ends of the supporting foot bodies 1 on both sides of the body of the two-wheeled vehicle are provided with swing type soles 22, so that the two-wheeled vehicle can be supported in a narrow body and a wide body. The specific structure of the swing type sole mechanism is that an inner hole with an opening at a free end is arranged in a supporting foot body 1, a sole swing shaft 2 matched with the inner hole of the supporting foot body 1 is arranged in the inner hole of the supporting foot body 1, a circumferential groove 35 which surrounds the outer circle is dug on the outer circle of the sole swing shaft 2 in the inner hole of the supporting foot body 1, a through hole is drilled on the wall of the supporting foot body 1 by aligning the circumferential groove 35, a positioning pin 36 is arranged through the through hole, and the inner end of the positioning pin 36 loosely extends into the circumferential groove 35, so that the sole swing shaft 2 can rotate in the inner hole of the supporting foot body 1 but cannot axially move. A second reel spring 33 is then fitted over the support foot body 1. The outer end of the sole pendulum shaft 2 arranged in the inner hole of the supporting foot body 1 extends out of the free end of the supporting foot body 1 by a certain length, a sole 22 with proper length is arranged on the sole pendulum shaft 2 which extends out of the free end of the supporting foot body 1 and is close to the direction vertical to the sole pendulum shaft 2, and a sole wheel shaft 24 provided with a sole wheel 25 is fixedly arranged at the front end of the sole 22. Then, one end of the second reel spring 33 fitted over the supporting leg body 1 is fixed to the supporting leg body 1 by the second coil spring front seat 34, and then the second reel spring 33 is wound and the other end of the second reel spring 33 is fixed to the sole 22 by the second coil spring rear seat 23, so that the second reel spring 33 exerts a force on the sole 22 to swing the sole 22 outward toward the vehicle body side, thereby allowing the sole 22 to protrude out of the vehicle body side. And the free ends of the support foot bodies 1 are fixed with stop pendulum tiles 18 that limit the swings of the soles 22 within 90 degrees, and the stop pendulum tiles 18 are shaped like the ceiling of an ancient die. In addition, when the supporting foot body 1 is at a high position and locked, the sole 22 is vertically suspended at the vehicle bottom position by the sole oscillating axle 2, a horizontal through hole parallel to the vehicle side is drilled on the sole 22, the other end of the N-shaped oscillating axle 27 with the auxiliary wheel 29 at one end is inserted into the through hole on the sole 22 and a first section is output, a oscillating axle linkage disc 88 is fixed at the end part of the N-shaped oscillating axle 27 of the first section, a pull rope 89 is wound around the lower part of the oscillating axle linkage disc 88 and is wound upwards for two thirds of circles on the circumference of the oscillating axle linkage disc 88, the front end of the pull rope 89 is fixed on the circumference of the oscillating axle linkage disc 88 by the pull rope joint 87, an auxiliary wheel tension spring seat 91 is arranged on the outer end surface of the sole oscillating axle 2, the pull rope 89 is connected with the auxiliary wheel tension spring seat 91 by the auxiliary wheel tension spring 90, and the elastic force of the auxiliary wheel tension spring 90 always enables the auxiliary wheel 29 at the end part of the N-shaped oscillating axle 27 to oscillate downwards, in order to make the auxiliary wheel 29 swing downwards to a proper position, a swing shaft stop pin 26 is further fixed on the sole 22 close to the lower part of the middle section of the N-shaped swing shaft 27, the auxiliary wheel 29 swings downwards to a proper position, namely the position where the swing shaft stop pin 26 is fixed on the sole 22, and the position of the auxiliary wheel 29 is slightly lower than that of the sole wheel 25 before the N-shaped swing shaft 27 touches the swing shaft stop pin 26. The auxiliary wheel 29 having the elastic function and lower than the sole wheel 25 can support the ground prior to the sole wheel 25, and can ensure the sole 22 and the sole wheel 25 to operate correctly during the swinging and supporting processes, and the sole wheel 25 will not be locked due to the contact with the ground before rotating 90 degrees.

The concrete structure of the supporting foot upper swing traction mechanism is that a nearly flat rope arranging device body 45 with a rectangular inner cavity is paved on two sides of the bottom of the vehicle in a vehicle bottom box 63 near the rear end of the bottom of the vehicle, the inner cavity of the rope arranging device body 45 is called a rope arranging device cavity 86, a traction rope inlet and outlet at the front end of the rope arranging device cavity 86 is horn-shaped and called a rope arranging device horn mouth 85, and the height of the rope arranging device cavity 86 is slightly larger than the diameter of a traction rope, so that the traction rope can be stored only in a single layer, and knotting is avoided. A traction rope push-pull plate 47 is arranged in the rope tidying device cavity 86, the gap between the traction rope push-pull plate 47 and the inner wall of the rope tidying device cavity 86 is small, so that a traction rope cannot be embedded, a rope joint four 46 is arranged on the traction rope push-pull plate 47, bearing seats 51 with bearings are arranged at two ends of the central axis of the upper plane of the rope tidying device 45, a long screw 50 is arranged on the bearing of the bearing seat 51, a large nut 48 matched with the long screw 50 is arranged on the long screw 50, the rear end of the long screw 50 extends out of the bearing seat 51, the rear end of the long screw 50 is relative to the front and back of the vehicle body, a chain wheel 52 is arranged at the end of the large screw 50 extending out of the bearing seat 51, a motor 54 is arranged in a vehicle bottom box 63, a chain wheel 52 matched with the chain wheel 52 at the end of the long screw 50 is arranged at the output shaft end of the motor 54, the chain 53 is used for connecting the two chain wheels 52, and a sealing plate of the rope tidying device The long hole seam 44 is penetrated, and a connecting plate 49 is further penetrated through the long hole seam 44 to connect the large nut 48 and the traction rope push-pull plate 47, wherein the lengths of the long hole seam 44, the rope arranging device body 45 and the long screw 50 are all determined by the height of the sole 22 which swings up and down. In addition, the first rope joints 21 are respectively arranged on the soles 22 of the small swing angle and crotch bar supporting type supporting leg mechanisms on the two sides of the vehicle body 57, the fixed pulley 16 is arranged on the crab claw frame 73 at the position with proper height above the soles 22, the proper height of the upper fixed pulley 16 is that when the front section 31 of the traction rope pulls the soles 22 to enable the soles 22 to rise through the guiding of the upper fixed pulley 16, the lowest position of the sole wheel 25 at the front end of the soles 22 is just level with the bottom plane of the vehicle, and the lowest position of the sole wheel 25 is at the position level with the bottom plane of the vehicle, the stop pin 17 is arranged on the crab claw frame 73 at the upper side of the supporting foot body 1, and the stop pin 17 is used for limiting the rising height of the supporting legs 20. The lower fixed pulley 30 is arranged on the crab claw frame 73 which is arranged below the upper fixed pulley 16 and close to the plane of the vehicle bottom, a sliding pin guide pipe 32 which is consistent with the front and back direction of the vehicle body and is horizontally provided with a conical head waist groove sliding pin 40 is laid close to the lower fixed pulley 30, and the other end of the sliding pin guide pipe 32 is directly communicated to a bell mouth 85 of a rope arranging device in the vehicle bottom box 63. In addition, a second rope connector 39 and a third rope connector 41 are arranged at two ends of a cone head waist groove sliding pin 40 in the sliding pin guide tube 32, the third rope connector 41 and a fourth rope connector 46 are connected by a traction rope rear section 43, the rear end of a traction rope front section 31 is connected with the cone head waist groove sliding pin 40 by the second rope connector 39, then the traction rope front section 31 penetrates out of a front outlet of the sliding pin guide tube 32 from the sliding pin guide tube 32, penetrates through a lower pulley 30, penetrates through an upper pulley 16 upwards, bypasses the inner side of the supporting foot body 1 downwards, and then is connected with the sole 22 outwards through a first rope connector 21. The lengths of the front section 31 and the rear section 43 of the hauling cable are determined by field tests. And at this moment, the installation of the respective supporting foot upper swing traction mechanisms on the two sides of the vehicle body is finished. The above-described leading traction rope segment 31 goes down from the upper pulley 16 and goes around the lower surface of the supporting foot body 1 to pull the sole 22, and this has the effect that the leading traction rope segment 31 exerts a twisting force on the sole pivot shaft 2 fixed integrally with the sole 22 in the tangential direction of the circumferential surface of the supporting foot body 1, so that the sole 22 and the supporting foot body 1 swing upward and simultaneously rotate the sole 22 by 90 degrees. In addition, for the requirement of program conversion, a first travel electric switch 42 and a second travel electric switch 62 are also arranged in the mechanism, and the first travel electric switch refers to an electric switch touched by a moving component in the process of travel.

The specific structure of the supporting foot locking and unlocking mechanism is that when the conical head waist groove sliding pin 40 in the sliding pin guide tube 32 is in the position of contacting with the travel electric switch 42, the waist groove of the conical head waist groove sliding pin 40 is aligned, a through hole called a locking pin hole 64 is dug on the upper side tube wall of the sliding pin guide tube 32, an L-shaped lever swinging shaft 72 is arranged on the vehicle body 57 close to the upper surface of the sliding pin guide tube 32 and perpendicular to the sliding pin guide tube 32 in the horizontal direction, and an L-shaped lever 69 capable of swinging around the L-shaped lever swinging shaft 72 is arranged on the L-shaped lever swinging shaft 72. The L-shaped lever 69 is in the form of an L-shaped lever, a pendulum shaft 72 of the L-shaped lever is positioned so as to align an end of a front segment of the L-shaped lever 69 with a latch hole 64, a latch pin 65 is mounted on the end of the front segment of the L-shaped lever 69 such that the latch pin 65 can be inserted into or withdrawn from a corresponding one of the slots of the cone-head slot 40 by swinging of the L-shaped lever 69, a rear segment of the L-shaped lever 69 is vertically perpendicular to the latch guide pipe 32, a body member guide sleeve 76 and a second electromagnet 74 are mounted on a vehicle body on one side of the rear segment of the L-shaped lever 69 in a direction parallel to the latch guide pipe 32, a body member 75 is disposed within the body member guide sleeve 76 such that the body member 75 is slidable within the body member guide sleeve 76, the body member 75 is connected to the rear segment of the L-shaped lever 69 by a second connecting wire 70, the second electromagnet 74 is connected to the rear segment of the L-shaped lever 69 by a third connecting wire 71, a second pull spring seat 66 is mounted on a, the rear section of the L-lever 69 is connected to the second tension spring base 66 by a second tension spring 67 of appropriate dimensions. The supporting foot locking and unlocking mechanism can automatically or manually swing the rear section of the L lever 69 so as to drive the front section of the L lever 69 to swing up and down, and the lock pin 65 at the end part of the front section of the L lever 69 is inserted into or pulled out of the waist groove of the cone head waist groove slide pin 40. When the lock pin 65 is inserted into the waist groove of the countersunk slide pin 40, the lock pin 65 locks the support foot 20 at a desired height position, which is pulled by the countersunk slide pin 40. When the lock pin 65 exits the slot of the countersunk slide pin 40, the support foot 20 at the desired height position, which is pulled by the countersunk slide pin 40, is unlocked. The supporting legs 20 are locked, and the crane can be driven; the supporting legs 20 are unlocked, the supporting legs 20 and the like quickly descend, touch the ground, support the vehicle body, and stably stop the vehicle. In addition, in order to meet the requirement of a component action conversion program in the supporting foot locking and unlocking mechanism, a second stop pin electric switch 68 is further arranged on the vehicle body close to the position above the front section of the L lever 69 in the mechanism.

For the open type two-wheel vehicle, the vehicle can be normally and temporarily stopped in the driving process, only the two feet of the vehicle are needed to be braked to support the ground, and the supporting foot device is not needed to be started. The supporting foot device is manually or automatically started to perform the parking operation only under the conditions of parking and preventing the overturn.

For the installation positions and directions of the small swing angle and crotch rod support type supporting leg mechanisms on the two sides of the vehicle body, the small swing angle and crotch rod support type supporting leg device is divided into a front-mounted type supporting leg device and a rear-mounted type supporting leg device, and relative to the front-rear direction of the vehicle body, a front-mounted small swing angle and crotch rod support type supporting leg mechanism is arranged in front of a supporting leg swing shaft 38 of a supporting leg body 1; the supporting foot body 1 is positioned behind the supporting foot swing shaft 38 and is a rear-mounted small swing angle and crotch rod supporting type supporting foot mechanism. The front-mounted small swing angle and crotch rod supporting type supporting leg mechanism is used for preventing the vehicle from turning over and parking, and the more the sole 22 is close to the front position of the vehicle, the more the parking safety is facilitated; the rear-mounted small swing angle and fork rod support type supporting leg mechanism is mainly used for low-speed driving and stopping of a fully-closed single front wheel vehicle type. The totally-enclosed single-front-wheel vehicle type adopts two small swing angle and fork rod supporting type supporting leg mechanisms of a front-mounted type and a rear-mounted type at the same time.

The invention relates to a small swing angle and fork rod supporting type supporting foot device for a single front wheel, which is mainly characterized by comprising four wheels or six wheels, namely, a front wheel and a rear wheel during driving, a vehicle body is narrow, the driving is flexible, the occupied road width is small, and the six wheels are used for the vehicle type with four sole wheels 25 and a front wheel and a rear wheel 20 and the front wheel and the rear wheel during parking. When parking, the wheels are supported, and the distance between the foot supporting wheels 22 is large, and the supporting area is large, so that the safety of driving and parking can be ensured. Secondly, the pawl type stopping body 14 stopping mechanism of the supporting leg device with the small swing angle and the fork rod for the single front wheel can ensure that each supporting leg 20 reliably contacts with the ground and stably stops under the condition of uneven ground, and the supporting fork rod is positioned at the front end close to the supporting leg body 1, so the supporting is reasonable and the structure is simple. Thirdly, the loose rope is not knotted by the rope arranging device body 45 of the supporting leg device with the small swing angle and the fork lever for the single front wheel. Fourthly, the locking and unlocking mechanism of the inertia body 75 can be operated without people, and automatically unlocks the supporting leg 20, so that the safe operation is more reliable.

Examples

In this embodiment, the small swing angle and fork rod supporting type supporting leg device for a single front wheel vehicle comprises a conventional vehicle body 57 and a program controller 58, wherein a front wheel 28, a rear wheel 55, a traveling motor 54, a speed regulating handle 77, a brake handle 79, a steering handle 80 and a vehicle front fork 19 are arranged on the conventional vehicle body 57.

In the driving operation, the supporting feet 20 in the ground supporting and vehicle body supporting state are firstly converted into the state of being locked at the high position, and for the open type two-wheel power-assisted vehicle, the driving operation method is as follows: firstly, a driver sits well, stabilizes the vehicle body by pedaling, then touches and presses the locking electric knob 81 by hands, and can adjust the speed regulating handle 77 to make the vehicle advance at low speed for about a few seconds, the indicator light 4 is on, which indicates that the supporting foot 20 in the ground supporting state is converted into the state locked at the high position, the driving operation is finished, and the speed regulating handle 77 and the brake handle 79 can be operated to carry out the driving or high-speed driving operation.

The procedure for converting the parking state of the support leg 20 for supporting the vehicle body by touching the ground to the driving state locked at the high position is as follows: when the locking electric knob 81 is pressed down, the first electromagnet 3 is electrified by the locking electric knob 81 through the controller 59 and the cable 60, and the electromagnetic attraction of the electrified first electromagnet pulls the retaining body tail 9 to enable the retaining body 14 to swing and lift off the concave-convex surface 6 on the support fork rod until the retaining pin electric switch 15 is touched. The lifting of the retaining body 14 off the supporting fork lever 5 is prepared for the next step of swinging the supporting fork lever 5 and the supporting legs 20. The retaining body 14 is lifted to directly touch the first stop pin electric switch 15, the first stop pin electric switch 15 enables the motor 54 to be electrified to rotate in the positive direction, the chain wheel 52 fixed on the output shaft of the motor 54 drives the long screw 50 to rotate through the chain 53 and the chain wheel fixed at the end part of the long screw 50, the rotating long screw 50 enables the large nut 48 to move towards the chain wheel end of the long screw 50, the large nut 48 also drives the connecting plate 49 and the traction rope push-pull plate 47 to move towards the rear end of the vehicle bottom box 63, the traction rope push-pull plate 47 drives the traction rope rear section 43 through the fourth rope joint 46 to drive the cone head waist groove sliding pin 40 to move from the front end to the rear end in the sliding pin guide pipe 32 through the third rope joint 41, and the front end and the rear end in the sliding pin guide pipe 32 are relative to the front end and the rear end of the vehicle body 57. The conical head waist groove sliding pin 40 moving in the sliding pin guide pipe 32 pulls the front section 31 of the traction rope through the second rope joint 39, the front section 31 of the traction rope is guided by the lower pulley 30 and the upper pulley 16, then downwards winds the lower surface of the supporting foot body 1 from the inner side of the supporting foot body 1, and then ascends together with the supporting foot body 1 and the supporting fork rod 5 which are integrated with the foot body 22 through the first rope joint 21 after passing by the lower surface of the supporting foot body 1 and the front side surface of the supporting foot body 1 until the supporting foot body 1 touches or is close to touch the supporting foot stop pin 17; meanwhile, the soles 22 swing by about 90 degrees towards the lower direction of the supporting foot bodies 1 until the soles 22 swing to touch or approach the anti-swing tiles 18 and are suspended on the sole swing shafts 2 positioned at the bottoms of the cars; at the same time, the above-mentioned cone-head kidney slot slide pin 40 in the components pulled by the motor 54 to lift the support foot 20 also moves towards the rear end of the slide pin guide tube 32 in the slide pin guide tube 32 at the same time until the cone-head kidney slot slide pin 40 reaches the first travel electric switch 42. The cone head waist groove sliding pin 40 touches the first travel electric switch 42 to play the following three roles: firstly, as mentioned above, the supporting foot body 1 is lifted, the sole 22 is lifted and rotates basically in place, and the preparation is provided for driving and high-speed driving; secondly, the waist groove of the conical head waist groove sliding pin 40 is opposite to the lock pin hole 64, so that the lock pin 65 is inserted into the waist groove of the conical head waist groove sliding pin 40, and the lock pin 65 replaces the traction force of the motor 54 to lock the supporting leg 20. And thirdly, the first travel electric switch 42 is triggered to start, and the motor 54 rotates reversely by changing the positive pole and the negative pole of the power supply of the motor 54 and delaying through the delayer 58. The motor 54 rotating reversely drives the wheel 52, the big nut 48 and the connecting plate 49 to make the pulling rope push-pull plate 47 move reversely, the pulling rope push-pull plate 47 moving reversely pushes and squeezes the pulling rope rear section 43 to bend and store the pulling rope rear section 43 in the rope arranging cavity 86 in order until the big nut 48 contacts the stroke electric switch II 62. The second travel electric switch 62 enables the motor 54 and the first electromagnet 3 to be powered off, the motor stops rotating, the pulling force of the powered-off first electromagnet 3 on the retaining body tail 9 disappears, and the first tension spring 12 pulls the retaining body tail 9 to swing so that the retaining body 14 touches and presses the concave-convex surface 6 on the support fork rod 5 with proper force. The conical head waist groove sliding pin 40 contacts the travel electric switch 42 to play three roles, namely, the first two roles are convenient for driving operation, and the last role is convenient for next parking operation.

When the parking operation is required, the supporting leg 20 locked at the high position needs to be quickly and timely converted into the state that the supporting leg 20 supports the ground and supports the vehicle body, and the parking operation method and the parking operation action conversion program of the open type two-wheel moped have the following two manual and automatic modes.

The manual parking operation method is that a driver presses the unlocking electric button 78 and operates the brake handle 79 to brake the vehicle, the unlocking electric button 78 unlocks the supporting foot 20, the supporting foot 20 immediately descends to support the ground and support the vehicle body, the vehicle is parked stably, and the parking operation is finished.

The manual parking operation switching program is that the driver presses the unlocking electric button 78, the second electromagnet 74 is electrified, the electromagnetic attraction of the electrified second electromagnet 74 pulls the rear section of the L lever 69 to drive the front section of the L lever 69 to swing until the front section of the L lever 69 touches the stop pin electric switch II 68. The upward swing of the forward section of the L-lever 69 also pulls the locking pin 64 out of the slot of the countersunk tongue slot slide pin 40, thereby unlocking the support foot 20, resulting in the following interlocking action. The conical head waist groove sliding pin 40 locked by the lock pin 64, the foot sole 22 which is connected with the traction rope waist groove sliding pin 40 and is suspended at a high position by the traction rope front section 31, the supporting foot body 1, the crotch bar 5 and components connected with the supporting foot body 1 rapidly swing downwards under the self gravity and the elastic force of the first reel spring 84, wherein the traction rope rear section 43 which is orderly bent and stored in the rope tidying device cavity 86 is pulled out and straightened without hindrance, the foot sole 22 in the traction rope rear section swings about 90 degrees to the extending direction of the vehicle side by taking the foot sole swinging shaft 2 as an axis under the elastic force of the second reel spring 33 until the traction rope rear section touches the swing stop block 18 on the free end of the supporting foot body 1, and finally the foot sole 22 touches the ground. Once the sole 22 contacts the ground, the sole 22 will act on the supporting fork rod 5 of the supporting fork body 1 to make the supporting fork rod 5 move upwards, at this time, the retaining body 14 installed on the vehicle body 57 and specially matched with the concave-convex surface 6 on the supporting fork rod 5 can engage or wedge with the concave-convex surface 6 on the supporting fork rod 5 in one direction through proper contact pressure and contact angle, so that the supporting fork rod 5 can not move upwards, and the vehicle body 57 can be supported to stably stop the vehicle. Wherein, because the sole 22 swings about 90 degrees towards the extending direction of the vehicle side while descending, the distance between the two sole wheels 25 contacting the ground at the two sides of the vehicle body 57 is greatly larger than the width of the vehicle body, thereby realizing narrow vehicle body and wide support. As mentioned above, the front section of the L-lever 69 swings until it touches the second stopper electric switch 68, the second electromagnet 74 is powered off by the touched stopper electric switch 68, the electromagnetic attraction of the powered-off second electromagnet 74 disappears, and the second tension spring 67 drags the rear section of the L-lever 69 to drive the front section of the L-lever 69 to insert the lock pin 65 downward into the lock pin hole 64 for the next use of locking the countersunk head kidney slot slide pin 40. In addition, the auxiliary wheel 29 mounted on the N-shaped swing shaft 27 having the elastic function on the sole 22 can support the sole wheel 25 in advance when the sole wheel 25 is not subjected to the vehicle body weight pressure, and the sole wheel 25 is supported by the elastic force of the auxiliary wheel tension spring 90 on the N-shaped swing shaft 27, thereby preventing the sole wheel 25 from being locked due to early contact when descending, and ensuring that the sole wheel 25 reliably contacts the vehicle body 57 along with the reliable swing of the sole 22 by 90 degrees.

The automatic vehicle stopping operation is accomplished by means of inertia force. The automatic vehicle stopping operation change over procedure is accomplished through a inertia force acting on the vehicle to impart a force thereon to the vehicle inertia force communicating through the inertia force communicating member 75 in a manner that the inertia force communicating member 75 is in communication with the second tension spring 67, such that the inertia force communicating member 75 is in communication with the inertia force communicating member in the inertia force communicating member 76, such that the inertia force communicating member 75 moving in a forward direction pulls the rear segment of the L lever 69 through the second connecting rope 70 to pull the front segment of the L lever 69 to swing upward to disengage the latch pin 64 from the waist groove of the cone-head waist groove sliding pin 40, thereby unlocking the support leg 20. The unlocked support foot 20 is switched from the driving state locked at the high position to the parking state in which the support foot 20 supportably supports the vehicle body. The detailed procedure for converting the automatic parking operation is the same as the procedure for converting the manual parking operation, and will not be described again.

For the open type two-wheel vehicle, the vehicle can be normally and temporarily stopped in the driving process, only the two feet of the vehicle are needed to be braked to support the ground, and the supporting foot device is not needed to be started. The supporting foot device is manually or automatically started to perform the parking operation only under the conditions of parking and preventing the overturn. In terms of parking frequency, the number of the supporting foot devices is reduced compared with the number of temporary parking in the driving process, and the parking is adopted when a driver leaves the vehicle.

Claims

1. A small swing angle and fork rod supporting type supporting leg device for a single front wheel vehicle comprises a vehicle body, wheels, a driving motor and a controller of the existing single front wheel vehicle, and is characterized in that supporting leg swing shafts which are approximately vertical to the side surface of the vehicle body are respectively arranged at the positions, close to the bottom, of two sides of the vehicle body, one end of each supporting leg body is connected to the corresponding supporting leg swing shaft, the other end of each supporting leg body is a free end, a sole is arranged at the free end of each supporting leg body, the supporting leg bodies arranged on the supporting leg swing shafts and the soles arranged on the supporting leg bodies can swing around the axial lead of the supporting leg swing shafts at small angles, the swinging refers to that when the supporting leg bodies and the soles arranged on the supporting leg bodies swing around the axial lead of the supporting leg swing shafts, the maximum included angle between the supporting leg bodies and the horizontal plane is smaller than 90 degrees, when the supporting leg bodies are in the horizontal position, the upper side of the supporting foot body close to the free end of the supporting foot body is approximately vertical to the supporting foot body and is provided with a supporting fork rod, a section of the supporting fork rod with proper length is provided with a rugged concave-convex surface, in addition, a backstop body is movably connected on the vehicle body close to the concave-convex surface on the supporting fork rod or on an accessory of the vehicle body close to the concave-convex surface on the supporting fork rod, when the retaining body movably connected with the vehicle body is pressed against the concave-convex surface on the supporting fork rod with proper force and angle, the retaining body does not prevent the supporting fork rod from moving downwards, but the retaining body prevents the supporting fork rod from moving upwards, when the retaining body is separated from the concave-convex surface on the supporting fork rod, the retaining body does not prevent the supporting fork rod from moving downwards or upwards completely, the supporting leg device further comprises a swinging sole mechanism, and the swinging sole mechanism comprises the following components: the supporting legs in be equipped with the opening and be in the hole of the supporting legs body other end, hole in-connection have the sole balance staff just the outer end of sole balance staff stretch out outside the hole stretch out to one section sole balance staff outside the hole on be equipped with the sole that is close to in perpendicular to sole balance staff, this kind of erection joint can use supporting legs internal hole axis to rotate as the axle center together at the sole balance staff and the sole balance staff that stretches out outside the hole, nevertheless can not remove along supporting legs internal hole axis direction, supporting legs body and sole between be connected with the second spool spring of screwing to make the second spool spring exert one to the sole and make the sole to car body side outside direction wobbling power, thereby make the sole can stretch out to car body side outside through the swing of about 90 degrees.

2. The small swing angle, fork rod supporting type supporting leg device for a single front wheel vehicle as claimed in claim 1, wherein a retaining body stop pin is provided at one side of the retaining body tail for limiting the swing angle of the retaining body.

3. The small swing angle and crotch bar supporting type supporting leg device for the single front wheel vehicle as claimed in claim 1, wherein the supporting leg device further comprises a supporting leg upper swing traction mechanism, and the supporting leg upper swing traction mechanism is as follows: a rope arranging device body is also arranged in the vehicle bottom box, a rope arranging device cavity is arranged in the rope arranging device body, a traction rope inlet and a traction rope outlet are arranged at the front end of the rope arranging device cavity, the height of the rope arranging device cavity (86) is slightly larger than the diameter of the traction rope so that the traction rope is arranged in a single layer and is not knotted, a traction rope push-pull plate is arranged in the rope arranging device cavity, a fourth rope connector is arranged on the traction rope push-pull plate, bearing seats with bearings are respectively arranged on the upper sides of the two ends of the rope arranging device, long screw rods are arranged on the two bearing seats, large nuts matched with the long screw rods are arranged on the long screw rods, the rear ends of the long screw rods extend out of the bearing seats and are in transmission fit with a motor to realize torque transmission, a long hole seam is also arranged on the upper part of the rope arranging device body and is used for the connecting plate to pass through and enable the large nuts to be connected with the traction rope push-, a lower fixed pulley is arranged below the upper fixed pulley, one side of the lower fixed pulley is horizontally provided with a sliding pin guide tube which is consistent with the front and back directions of the vehicle body, the inside of the sliding pin guide tube is connected with a cone head waist groove sliding pin, one end of the sliding pin guide tube is directly communicated with a traction rope inlet and outlet of the rope tidying device cavity, two ends of the cone head waist groove sliding pin are respectively provided with a second rope joint and a third rope joint, the rear section of the traction rope is connected with the third rope joint and a fourth rope joint, one end of the front section of the traction rope is connected with the second rope joint, penetrates out of the sliding pin guide tube, sequentially bypasses the lower pulley and the upper pulley from bottom to top, downwards bypasses the lower side surface of the supporting foot body from the inner side of the supporting foot body and is connected with the sole at the outer end of the sole rotating shaft, so that the traction rope can generate a torsional force on the sole swinging shaft in the tangential direction of the circumferential surface of the supporting foot body, thereby leading the sole to rotate 90 degrees downwards when the front section of the traction rope pulls and rises.

4. The small swing angle, crotch bar supporting type supporting leg device for a single front wheel vehicle as claimed in claim 1, wherein a supporting leg stopper pin for limiting the rising height of the supporting leg is installed on the vehicle body.

5. The small swing angle, crotch bar supporting foot device for a scooter according to claim 1, wherein said supporting foot means comprises a front supporting foot means and a rear supporting foot means, and wherein the supporting foot body is provided on the front side of the supporting foot swing shaft with respect to the front-rear direction of the scooter body as the front supporting foot means, and the supporting foot body is provided on the rear side of the supporting foot swing shaft as the rear supporting foot means.