CN217294801U

CN217294801U - Self-lever gravity scooter

Info

Publication number: CN217294801U
Application number: CN202221427733.XU
Authority: CN
Inventors: 相磊磊; 相晨阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-08-26
Anticipated expiration: 2032-06-08

Abstract

A self-propelled lever gravity scooter is provided with a frame, a front fork comprises two front fork plates connected with the frame, and a rear fork comprises two rear fork plates connected with the frame; a first bevel gear set is arranged between the two front fork plates, a second bevel gear set is arranged between the two rear fork plates, a frame shaft hole which is through from front to back is formed in the frame, a rolling rod is arranged in the frame shaft hole, and two ends of the rolling rod are in transmission connection with the first bevel gear set and the second bevel gear set through bevel gears respectively; the front end of the pedal is relatively rotatably arranged on the front fork plate, and the front end of the pedal is connected with at least one bevel gear arranged in the first bevel gear set so as to transmit the rotation of the pedal to the bevel gear; at least one bevel gear arranged on the wheel shaft to drive the wheel shaft to rotate is arranged in the second bevel gear set. The driving system is powerful and light, the driving efficiency is high, the structure is simple, the integral strength is high, and the failure rate is low; the stability is good, and the application range is wide; convenient storage and strong aesthetic and entertainment.

Description

Self-lever gravity scooter

Technical Field

The utility model relates to a scooter field, concretely relates to lever gravity scooter by oneself is as vehicle, amusement body-building apparatus, instrument of riding instead of walk etc..

Background

The bicycle in the prior art has some problems, mainly depends on a complex mechanical gear to drive or drives through a pressure rod crank chain mechanism, the lever design wastes power greatly, the system is complex, the driving effect brought is not good, and the experience feeling is poor. For example, CN203946226U discloses a three-wheeled bicycle, which is a sport tool that stands front and back with two feet, and treads a V-shaped pedal up and down in a reciprocating manner as a driving force, thereby realizing continuous forward movement. The three-wheeled bicycle comprises a front steering device, a frame, a transmission system, a rear drive assembly and a braking device; the front steering device is matched and connected with a faucet pipe at the front part of the frame, the two-wheel differential rear drive device is matched and connected with a rear drive mounting frame at the rear part of the frame, the transmission system is matched and assembled with the frame and the rear drive system, and the braking device is connected with the rear drive and the frame. The three-wheel self-propelled scooter has high novelty on the whole. However, the chain transmission and the matching mechanism adopted on the whole structure are complex and easy to break down, the strength of the whole structure is low when the chain is exposed, and the chain failure cannot be immediately processed by a full-wrapping structure.

SUMMERY OF THE UTILITY MODEL

In view of the above circumstances, in order to solve the problems in the prior art, the present invention provides a bicycle lever gravity scooter, which comprises a frame, wherein a front fork and a rear fork are respectively disposed at two ends of the frame, the front fork comprises two front fork plates connected to the frame, and the rear fork comprises two rear fork plates connected to the frame; a first bevel gear set is arranged between the two front fork plates, a second bevel gear set is arranged between the two rear fork plates, a frame shaft hole which is through from front to back is formed in the frame, a rolling rod is arranged in the frame shaft hole, and two ends of the rolling rod are in transmission connection with the first bevel gear set and the second bevel gear set through bevel gears respectively; the front end of the pedal is relatively rotatably mounted on the front fork plate, and the front end of the pedal is connected with at least one bevel gear arranged in the first bevel gear set so as to transmit the rotation of the pedal to the bevel gear; at least one bevel gear which is arranged on the wheel shaft to drive the wheel shaft to rotate is arranged in the second bevel gear set.

According to the self-propelled lever gravity scooter, the first bevel gear set is provided with a driving bevel gear, a transmission bevel gear and a reversing bevel gear, the driving bevel gear comprises a gear outer ring and a ratchet wheel inner ring, the side surface of the gear outer ring is fixedly connected with the side surface of the front end of the pedal, the ratchet wheel inner ring is fixedly connected with the side surface of the transmission bevel gear, and the transmission bevel gear is meshed with a first rolling rod bevel gear fixedly arranged at the end part of a rolling rod; the two groups of driving bevel gears are symmetrically arranged and are respectively connected with two pedals on two sides of the scooter, and the reversing bevel gears are arranged between the two driving bevel gears and are respectively meshed with the outer gear rings of the driving bevel gears.

According to the self-propelled lever gravity scooter, the transmission bevel gear comprises a connecting part and a transmission part arranged on the connecting part, two ends of the connecting part are fixedly connected with inner rings of ratchet wheels of two driving bevel gears respectively, and the transmission part is meshed with the first rolling rod bevel gear; the front end of the pedal, the ratchet wheel inner ring and the connecting part are respectively provided with a round hole and are arranged on the front shaft through the round holes; the side surface of the outer ring of the gear is fixedly connected with the side surface of the front end of the pedal through a connecting sleeve, the connecting sleeve is sleeved on the front shaft, and the outer wall of the connecting sleeve is installed on the front fork plate through a bearing in a relatively rotatable mode.

According to the self-propelled lever gravity scooter, the outer ring of the gear and the inner ring of the ratchet wheel are respectively of an annular structure, and the inner ring of the ratchet wheel is arranged in the outer ring of the gear; the inner ring of the gear is provided with a plurality of ratchet teeth, and the outer ring of the inner ring of the ratchet is provided with a plurality of pawls.

According to the application, the self-propelled lever gravity scooter is provided with the pawl groove on the annular outer wall of the inner ring of the ratchet wheel, the pawl is hinged in the pawl groove, and a spring used for pushing the movable end of the pawl to the ratchet wheel teeth is further arranged between the movable end of the pawl and the inner wall of the pawl groove.

According to the application, proper motion lever gravity scooter, second bevel gear group is equipped with the back drive bevel gear, the back drive bevel gear includes back gear outer lane and back ratchet inner circle, back gear outer lane with the fixed second roller bar bevel gear meshing that sets up of tip department behind the roller bar, back ratchet inner circle fixed mounting be in on the axletree.

According to the self-propelled lever gravity scooter, the front ends of two front fork plates of the front fork are further connected and provided with a front barrel, a front wheel connecting shaft is arranged in the front barrel through a bearing device, and the top end of the front wheel connecting shaft is connected and provided with a handlebar.

According to the self-propelled lever gravity scooter, the top end of the front wheel connecting shaft is also provided with a connecting piece, the connecting piece comprises a limiting block and a connecting block, the connecting block is connected and arranged on the limiting block in a relatively rotatable manner through a folding rotating shaft, and the top of the connecting block is fixedly connected with the handle rod; the limiting block comprises a horizontal limiting part and a vertical limiting part, and the horizontal limiting part is fixedly arranged at the top end of the front wheel connecting shaft.

According to the self-propelled lever gravity scooter, the horizontal limiting part and the vertical limiting part are respectively provided with the horizontal limiting groove and the vertical limiting groove, and the connecting block is provided with the handlebar limiting groove; the end part of the folding rotating shaft is also provided with a bayonet lock, and the bayonet lock comprises a bayonet lock rotating part which is rotatably arranged at the end part of the folding rotating shaft through the rotating shaft, and a claw part and a wrench part which are connected with the bayonet lock rotating part; when the handle rod limiting groove rotates to be aligned with the horizontal limiting groove, the claw part is embedded into the handle rod limiting groove and the horizontal limiting groove; when the handle rod limiting groove rotates to be aligned with the vertical limiting groove, the clamping claw part is embedded into the handle rod limiting groove and the vertical limiting groove.

According to the application, the self-propelled lever gravity scooter is characterized in that the handle rod comprises a loop bar connected with the front wheel connecting shaft and a main rod arranged in the loop bar, and a handle is arranged at the top end of the main rod.

After the technology provided by the utility model, according to the utility model discloses proper motion lever gravity scooter has following beneficial effect: the driving system is strong, light and convenient, the driving efficiency is high, the structure is simple, the integral strength is high, and the failure rate is low; the stability is good, and the application range is wide; convenient storage and strong aesthetic feeling entertainment, and is more suitable to be used as an entertainment sightseeing walk-replacing tool.

Drawings

FIG. 1 is a block diagram of a self-propelled lever gravity scooter according to the present application;

FIG. 2 is a bottom block diagram of a self-propelled lever gravity scooter according to the present application;

FIG. 3 is a top plan view of a first bevel gear set in a self-lever gravity scooter according to the present application;

FIG. 4 is a cross-sectional structural view at the front axle of a self-actuating lever gravity scooter according to the present application;

FIG. 5 is a cross-sectional view of a self-lever gravity scooter according to the present application, as viewed from the left to the right direction of the scooter;

FIG. 6 is an internal structure view of the driving bevel gear of FIG. 5 with the guard removed;

FIG. 7 is an internal view of the rear drive bevel gear of FIG. 5 with the guard removed;

FIG. 8 is a cross-sectional view of a self-lever gravity scooter according to the present application, as viewed from the right side to the left side of the scooter;

FIG. 9 is an internal view of the drive bevel gear of FIG. 8 with the guard removed;

FIG. 10 is a cross-sectional structural view at the axle of a bicycle lever gravity scooter according to the present application;

FIG. 11 is a block diagram of a bicycle lever gravity scooter folding front attachment according to the present application;

FIG. 12 is a view of another angle at the connection of FIG. 11;

FIG. 13 is a view of the folding rear connector of a self-actuating lever gravity scooter according to the present application;

fig. 14 is a view of another angle at the connection of fig. 13.

In the figure, the position of the upper end of the main shaft,

frame 1 pedal 5

Frame axle hole 10 bearing 51

Front fork 11 connecting sleeve 53

Front fork plate 110 front cylinder 6

Front wheel connecting shaft 61 of rear fork 12

Back fork plate 120 handle 7

Front axle 13 handle 70

Rolling rod 2 loop bar 71

Main rod 72 of first rolling rod bevel gear 21

Second roll bar bevel gear 22 coupling 8

Folding rotating shaft 80 of first bevel gear set 3

Drive bevel gear 31 stop block 81

Horizontal limiting part 811 of gear outer ring 311

Ratchet tooth 3110 horizontal limiting groove 8110

Pawl 3120 vertical limit portion 812

Vertical limit groove 8120 of pawl groove 3121

Spring 3122 connecting block 82

Ratchet inner ring 312 rod limiting groove 820

Drive bevel gear 32 bayonet 83

Connecting portion 321 latch rotating portion 831

Pawl 832 of transmission 322

Spanner portion 833 of reversing bevel gear 33

Second bevel gear set 4 wheel shaft 9

Front wheel 91 of rear drive bevel gear 41

Rear gear outer ring 411 rear wheel 92

Rear ratchet inner race 412 rear bearing 94

Detailed Description

Various preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in understanding the exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist understanding, but they are to be construed as merely illustrative. Accordingly, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Also, in order to make the description clearer and simpler, a detailed description of functions and configurations well known in the art will be omitted.

As shown in fig. 1-3, a bicycle lever gravity scooter is provided with a frame 1, wherein a front fork 11 and a rear fork 12 are respectively arranged at two ends of the frame 1, the front fork 11 comprises two front fork plates 110 connected with the frame 1, and the rear fork 12 comprises two rear fork plates 120 connected with the frame 1; a first bevel gear set 3 is arranged between the two front fork plates 110, a second bevel gear set 4 is arranged between the two rear fork plates 120, a frame shaft hole 10 which is through from front to back is formed in the frame 1, a rolling rod 2 is arranged in the frame shaft hole 10, and two ends of the rolling rod 2 are in transmission connection with the first bevel gear set 3 and the second bevel gear set 4 through bevel gears respectively; the front fork plate 110 is provided with a pedal 5, the front end of the pedal 5 is relatively rotatably mounted on the front fork plate 110, and the front end of the pedal 5 is connected with at least one bevel gear arranged in the first bevel gear set 3 so as to transmit the rotation of the pedal 5 to the bevel gear; at least one bevel gear is arranged in the second bevel gear set 4 and is arranged on the wheel shaft 9 to drive the wheel shaft 9 to rotate.

Referring to fig. 4 to 9 in conjunction with fig. 1 to 3, the first bevel gear set 3 is provided with a driving bevel gear 31, a transmission bevel gear 32 and a reversing bevel gear 33, the driving bevel gear 31 includes a gear outer ring 311 and a ratchet inner ring 312, a side surface of the gear outer ring 311 is fixedly connected with a side surface of the front end of the pedal 5, the ratchet inner ring 312 is fixedly connected with a side surface of the transmission bevel gear 32, and the transmission bevel gear 32 is engaged with a first rolling rod bevel gear 21 fixedly arranged at an end of the rolling rod 2; the two groups of driving bevel gears 31 are symmetrically arranged and are respectively connected with two pedals 5 at two sides of the scooter, and the reversing bevel gear 33 is arranged between the two driving bevel gears 31 and is respectively meshed with the outer gear rings 311 of the driving bevel gears 31.

The transmission bevel gear 32 includes a connecting portion 321 and a transmission portion 322 disposed on the connecting portion 321, two ends of the connecting portion 321 are respectively fixedly connected to the ratchet inner rings 312 of the two driving bevel gears 31, and the transmission portion 322 is engaged with the first rolling rod bevel gear 21.

The front pedal device further comprises a front shaft 13, and round holes are respectively formed in the front end of the pedal 5, the ratchet wheel inner ring 312 and the connecting portion 321 and are mounted on the front shaft 13 through the round holes.

The side surface of the gear outer ring 311 is fixedly connected with the side surface of the front end of the pedal 5 through a connecting sleeve 53, the connecting sleeve 53 is sleeved on the front shaft 13, and the outer wall of the connecting sleeve 53 is relatively rotatably mounted on the front fork plate 110 through a bearing 51.

The gear outer ring 311 and the ratchet wheel inner ring 312 are respectively of an annular structure, and the ratchet wheel inner ring 312 is arranged in the gear outer ring 311; the inner ring wall of the outer ring 311 of the gear is provided with a plurality of ratchet teeth 3110, and the outer ring wall of the inner ring 312 of the ratchet is provided with a plurality of pawls 3120.

A pawl groove 3121 is formed on an outer circumferential wall of the ratchet inner 312, the pawl 3120 is hinged in the pawl groove 3121, and a spring 3122 for urging the movable end of the pawl 3120 toward the ratchet teeth 3110 is further provided between the movable end of the pawl 3120 and an inner wall of the pawl groove 3121.

As shown in fig. 10, the second bevel gear set 4 is provided with a rear driving bevel gear 41, the rear driving bevel gear 41 includes a rear gear outer ring 411 and a rear ratchet inner ring 412, the rear gear outer ring 411 is engaged with the second roller bevel gear 22 fixedly provided at the rear end portion of the roller bar 2, and the rear ratchet inner ring 412 is fixedly mounted on the wheel axle 9.

The wheel shaft 9 is mounted on the rear fork plates 120 through the rear bearing 94, and the second roll bar bevel gear 22 and the rear drive bevel gear 41 are provided between the two rear fork plates 120.

As shown in fig. 11-14, the front ends of the two front fork plates 110 of the front fork 11 are further connected with a front tube 6, a front wheel connecting shaft 61 is installed in the front tube 6 through a bearing device, and a handle bar 7 is connected to the top end of the front wheel connecting shaft 61.

The top end of the front wheel connecting shaft 61 is further provided with a connecting piece 8, the connecting piece 8 comprises a limiting block 81 and a connecting block 82, the connecting block 82 is connected and arranged on the limiting block 81 in a relatively rotatable manner through a folding rotating shaft 80, and the top of the connecting block 82 is fixedly connected with the handle rod 7; the limiting block 81 comprises a horizontal limiting part 811 and a vertical limiting part 812, and the horizontal limiting part 811 is fixedly arranged at the top end of the front wheel connecting shaft 61.

The folding rotating shaft 80 is arranged at the intersection of the horizontal limiting part 811 and the vertical limiting part 812 on the limiting block 81.

A horizontal limiting groove 8110 and a vertical limiting groove 8120 are respectively arranged on the horizontal limiting part 811 and the vertical limiting part 812, and a handle limiting groove 820 is arranged on the connecting block 82; a bayonet 83 is further arranged at the end part of the folding rotating shaft 80, and the bayonet 83 comprises a bayonet rotating part 831 rotatably arranged at the end part of the folding rotating shaft 80 through the rotating shaft, and a claw part 832 and a wrench part 833 which are connected with the bayonet rotating part 831; when the rod-limiting groove 820 rotates to be aligned with the horizontal limiting groove 8110, the claw portion 832 is embedded into the rod-limiting groove 820 and the horizontal limiting groove 8110; when the rod-limiting groove 820 rotates to be aligned with the vertical limiting groove 8120, the claw portion 832 is embedded into the rod-limiting groove 820 and the vertical limiting groove 8120.

The handle 7 comprises a sleeve rod 71 connected with the front wheel connecting shaft 61 and a main rod 72 arranged in the sleeve rod 71, and a handle 70 is arranged at the top end of the main rod 72.

The reversing bevel gear 33 is relatively rotatably mounted on the outer wall of the front barrel 6 through a bearing device.

The front fork 11 is connected with a front wheel 91, the rear fork 12 is connected with a rear wheel 92, and the rear wheel 92 is mounted on the wheel shaft 9.

The frame 1, the front fork 11 and the rear fork 12 are of an integrated structure formed integrally or welded integrally. And a bearing is arranged between the rolling rod 2 and the frame shaft hole 10.

According to the self-propelled lever gravity scooter provided by the application, the driving bevel gear 31 adopts a mechanism similar to a ratchet wheel principle, when the pedal 5 swings towards one direction, the outer gear ring 311 of the driving bevel gear 31 rotates along with the pedal, at the moment, the pawl is inserted into ratchet wheel teeth to drive the inner ratchet wheel ring 312 to rotate in the same direction, the driving bevel gear 32 is driven to rotate, the first rolling rod bevel gear 21 is driven to drive the rolling rod 2 to rotate, and power is transmitted to the second bevel gear group 4 to drive the wheel shaft 9 and the rear wheel 92 mounted on the wheel shaft to rotate. The internal components and the working principle of the rear driving bevel gear 41 are similar to those of the driving bevel gear 31, and are not described again.

When the pedal 5 swings in the other direction, the pawls slide over the ratchet teeth, and no transmission is performed between the outer ring 311 and the inner ring 312. The swinging of the pedal 5 in the other direction, i.e., the returning operation of the pedal 5, is performed by a reverse bevel gear 33, and the reverse bevel gear 33 is disposed between the two driving bevel gears 31 and is engaged with the outer gear rings 311 of the driving bevel gears 31, respectively. When one of the outer gear rings 311 rotates, for example, the left pedal 5 is stepped to rotate the outer gear ring 311, the outer gear ring 311 drives the bevel gear 32 to rotate through the inner ratchet ring 312, and further drives the first bevel roller gear 21 to rotate the roller bar 2. Meanwhile, in the rotating process, the left gear outer ring 311 transmits the rotation to the reversing bevel gear 33, the reversing bevel gear 33 transmits the rotation to the right gear outer ring 311, and at the moment, the right gear outer ring 311 rotates reversely to drive the right pedal 5 to return upwards. At this time, since the driving bevel gear 31 is symmetrically arranged, the right gear outer ring 311 slips with the ratchet wheel inner ring 312, and the movement of the transmission bevel gear 32 is not interfered. And vice versa.

According to a proper motion lever gravity scooter of this application, can set up protective measures such as shell or backplate in the outside of transmission part as required when practical application, design according to conventional design principle can, this application is no longer repeated.

According to a proper motion lever gravity scooter of this application, driving system theory of operation lies in, through human gravity pedal, controls the bevel gear group of pedal wrench movement front wheel top in turn about, drives the drive of bevel gear group. One of the bevel gears in the bevel gear component is connected with one bevel gear at one end of the rolling rod, the bevel gear drives one bevel gear on the wheel shaft by the rotating force of the rolling rod, and the bevel gear rotates in one direction all the time to drive one side of the bevel gear teeth on the wheel shaft rod to realize forward driving.

According to a lever gravity scooter by oneself of this application, overall structure simplifies, moves bevel gear group drive through trampling the board, and including the roll bar inertial action, it is fast than general scooter by oneself power big speed, lets roll bar continuous energy storage make power stronger, and the bevel gear group link structure size proportion is ingenious, and the roll bar rolls towards a direction, easy maintenance, and it is laborsaving to travel, portable, recreational strong.

According to the application, the folding system is arranged at the joint of the front wheel and the handlebar, the folding position is folded towards the direction of the rear tail of the bicycle, and the folding position can be conveniently folded and stored. The bayonet lock is arranged at the rotary folding position, so that the stability of the handlebar in the fixing process can be enhanced, the position of the handlebar can be fixed in the folding process, the handlebar is prevented from shaking, and the handlebar is convenient to carry. The handle bar is provided with a loop bar, and the length of the telescopic main rod can be adjusted to adjust the height of the handle.

According to the self-propelled lever gravity scooter, when the self-propelled lever gravity scooter is used, the gravity center of a human body is located in the middle of the scooter body, the power input mechanism located at the front end and the bevel gear set located at the front end are controlled, the scooter body is driven to move forwards by the bevel gear set at the rear end through the transmission device, the gravity center of the human body and the matching of the control position and the transmission position are achieved, and the inertia rotation of the rolling rod in the driving system is influenced, so that the whole stability is high, and labor is saved.

According to the self-propelled lever gravity scooter, the driving system is strong, light and convenient, the driving efficiency is high, the structure is simple, the overall strength is high, and the failure rate is low; the stability is good, and the application range is wide; convenient storage and strong aesthetic feeling entertainment, and is more suitable to be used as an entertainment sightseeing walk-replacing tool.

The present invention has been described in detail, and the principle and the implementation of the present invention have been explained by using specific examples, and the explanation of the above examples is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

From the above description of the embodiments, it will be apparent to those skilled in the art that the present invention may be practiced. Of course, the above listed cases are only examples, and the present invention is not limited thereto. It should be understood by those skilled in the art that other variations or simplifications according to the technical solution of the present invention may be appropriately applied to the present invention, and should be included in the scope of the present invention.

Claims

1. A self-propelled lever gravity scooter is characterized by being provided with a frame (1), wherein a front fork (11) and a rear fork (12) are respectively arranged at two ends of the frame (1), the front fork (11) comprises two front fork plates (110) connected with the frame (1), and the rear fork (12) comprises two rear fork plates (120) connected with the frame (1); a first bevel gear set (3) is arranged between the two front fork plates (110), a second bevel gear set (4) is arranged between the two rear fork plates (120), a frame shaft hole (10) which is through from front to back is formed in the frame (1), a rolling rod (2) is arranged in the frame shaft hole (10), and two ends of the rolling rod (2) are in transmission connection with the first bevel gear set (3) and the second bevel gear set (4) through bevel gears respectively; the front end of the pedal (5) is relatively rotatably mounted on the front fork plate (110), and the front end of the pedal (5) is connected with at least one bevel gear arranged in the first bevel gear set (3) so as to transmit the rotation of the pedal (5) to the bevel gear; at least one bevel gear which is arranged on the wheel shaft (9) to drive the wheel shaft (9) to rotate is arranged in the second bevel gear set (4).

2. A self-propelled lever gravity scooter according to claim 1, wherein the first bevel gear set (3) is provided with a drive bevel gear (31), a drive bevel gear (32) and a reverse bevel gear (33), the drive bevel gear (31) comprises a gear outer ring (311) and a ratchet inner ring (312), the side of the gear outer ring (311) is fixedly connected with the front end side of the pedal (5), the ratchet inner ring (312) is fixedly connected with the side of the drive bevel gear (32), and the drive bevel gear (32) is engaged with a first rolling rod bevel gear (21) fixedly arranged at the end of the rolling rod (2); the two groups of driving bevel gears (31) are symmetrically arranged and are respectively connected with two pedals (5) at two sides of the scooter, and the reversing bevel gear (33) is arranged between the two driving bevel gears (31) and is respectively meshed with the outer gear rings (311) of the driving bevel gears (31).

3. A self-propelled lever gravity scooter according to claim 2, wherein the transmission bevel gear (32) comprises a connecting part (321) and a transmission part (322) arranged on the connecting part (321), both ends of the connecting part (321) are respectively fixedly connected with the ratchet inner rings (312) of the two driving bevel gears (31), and the transmission part (322) is meshed with the first rolling rod bevel gear (21); the front end of the pedal (5), the ratchet wheel inner ring (312) and the connecting part (321) are respectively provided with a round hole, and the front shaft (13) is mounted on the front shaft (13) through the round holes; the side surface of the gear outer ring (311) is fixedly connected with the side surface of the front end of the pedal (5) through a connecting sleeve (53), the connecting sleeve (53) is sleeved on the front shaft (13), and the outer wall of the connecting sleeve (53) is installed on the front fork plate (110) through a bearing (51) in a relatively rotatable manner.

4. A self-lever gravity scooter according to claim 2, wherein the gear outer ring (311) and the ratchet inner ring (312) are each of annular configuration, the ratchet inner ring (312) being mounted within the gear outer ring (311); the ratchet wheel is characterized in that a plurality of ratchet wheel teeth (3110) are arranged on the annular inner wall of the gear outer ring (311), and a plurality of pawls (3120) are arranged on the annular outer wall of the ratchet wheel inner ring (312).

5. A self-lever gravity scooter according to claim 4, wherein the inner ratchet ring (312) is provided with a pawl groove (3121) on the outer annular wall, the pawl (3120) is hinged within the pawl groove (3121), and a spring (3122) for urging the movable end of the pawl (3120) towards the ratchet teeth (3110) is further provided between the movable end of the pawl (3120) and the inner wall of the pawl groove (3121).

6. A bicycle lever gravity scooter according to claim 1, wherein the second bevel gear set (4) is provided with a rear drive bevel gear (41), the rear drive bevel gear (41) comprising a rear gear outer race (411) and a rear ratchet inner race (412), the rear gear outer race (411) being engaged with a second roller bar bevel gear (22) fixedly arranged at the rear end of the roller bar (2), the rear ratchet inner race (412) being fixedly mounted on the wheel axle (9).

7. A bicycle lever gravity scooter according to claim 1, wherein the front ends of the two front fork plates (110) of the front fork (11) are further connected with a front barrel (6), a front wheel connecting shaft (61) is installed in the front barrel (6) through a bearing device, and the top end of the front wheel connecting shaft (61) is connected with a handle bar (7).

8. The self-propelled lever gravity scooter as claimed in claim 7, wherein a connecting member (8) is further provided at the top end of the front wheel connecting shaft (61), the connecting member (8) comprises a limiting block (81) and a connecting block (82), the connecting block (82) is relatively rotatably connected to the limiting block (81) through a folding rotating shaft (80), and the top of the connecting block (82) is fixedly connected to the handle bar (7); the limiting block (81) comprises a horizontal limiting part (811) and a vertical limiting part (812), and the horizontal limiting part (811) is fixedly arranged at the top end of the front wheel connecting shaft (61).

9. The self-propelled lever gravity scooter according to claim 8, wherein the horizontal (811) and vertical (812) stops are provided with a horizontal (8110) and vertical (8120) stop grooves, respectively, and the connecting block (82) is provided with a lever stop groove (820); a bayonet (83) is further arranged at the end part of the folding rotating shaft (80), and the bayonet (83) comprises a bayonet rotating part (831) which is rotatably arranged at the end part of the folding rotating shaft (80) through a rotating shaft, and a claw part (832) and a wrench part (833) which are connected with the bayonet rotating part (831); when the handlebar limiting groove (820) rotates to be aligned with the horizontal limiting groove (8110), the claw part (832) is embedded into the handlebar limiting groove (820) and the horizontal limiting groove (8110); when the rod limiting groove (820) rotates to be aligned with the vertical limiting groove (8120), the clamping claw part (832) is embedded into the rod limiting groove (820) and the vertical limiting groove (8120).

10. A self-propelled lever gravity scooter according to claim 7, wherein the handlebar (7) comprises a loop bar (71) connected to the front wheel connection shaft (61) and a main bar (72) arranged in the loop bar (71), the top end of the main bar (72) being provided with a handle (70).