CN215944782U - Pedal wheelbarrow capable of changing transmission ratio - Google Patents

Abstract

The utility model discloses a pedal monocycle capable of changing transmission ratio, which mainly comprises a saddle, a fork, wheels, cranks, pedals, a central shaft, a hub, a driving wheel, a double-layer driving wheel, a hub wheel, bearings and the like. The gear meshing transmission can be designed into chain transmission, the hub wheel is replaced by the movable flywheel to form the pedal movable flying wheelbarrow with the transmission ratio being changeable, the speed and the control capability of the riding wheelbarrow can be effectively improved, and the balance and the nerve reflex capability are more effectively exercised.

Description

Pedal wheelbarrow capable of changing transmission ratio

The technical field is as follows:

the utility model relates to sports goods, in particular to a monocycle, and particularly relates to a pedal monocycle with a changeable transmission ratio.

Background art:

the monocycle is a developmental exercise, and has the advantages of effectively exercising the balance and the nerve reflex capacity of people and the like. A pedal monocycle is composed of saddle, seat tube, fork, lock ring, wheel, hub, central axle of wheel, bearing cover, crank and pedal. It is characterized by that the central shaft and hub are welded together, and fixed together, when riding, the pedal is stepped to drive crank to rotate, and when the crank is rotated by one turn (or one turn), it can only drive wheel to rotate by one turn, and can be rotated forward or backward, and can be moved forward or backward. When the 24-inch monocycle is used for riding, the pedals are stepped to rotate one circle to drive the cranks to rotate one circle, and only the wheels can be driven to rotate one circle, and only 191.41 cm can be rolled; with a 28-inch wheelbarrow, a person rides on the wheelbarrow to a high position, treading the wheelbarrow to rotate for one circle to drive the crank to rotate for one circle can only drive the wheel to rotate for one circle, and the wheelbarrow can only roll for 223.32 centimeters; with a 36 inch wheelbarrow, a person riding on the wheelbarrow is very tall, stepping on a pedal to make one turn to drive a crank to make one turn can only drive a wheel to make one turn, and can only roll 287.13 cm. Wheelbarrows as high as 36 inches are inconvenient to ride, difficult to popularize for the public, and are not fast to ride.

Some high wheelbarrows are provided with high-position cranks, the rotating shafts of the cranks are higher than the wheels, so that the transmission ratio can be changed conveniently by using chains and gears, and the transmission ratio can also not be changed. However, the transmission ratio of the pedal unicycle with the changeable transmission ratio is obviously different because the two cranks are arranged on the central shaft of the wheel. Other "wheelbarrows similar to the present invention, in which cranks are mounted on the central axes of the wheels of the wheelbarrow and the hub can be driven to rotate by changing the transmission ratio through gears" are not found.

Many people want to ride at the desired speed with a smaller wheelbarrow, and need to be able to change the transmission ratio as needed, increase it as needed, and be safer to ride if they can ride at a faster speed with a 24 inch, 26 inch or 28 inch wheelbarrow than with a 36 inch wheelbarrow, with the height being greatly reduced.

The utility model content is as follows:

the pedal monocycle with changeable transmission ratio has crank installed on the central shaft of wheel, gear installed on the central shaft, driving wheel and hub wheel, and the hub with movable bearing is driven to rotate to drive wheel or rim. Under the condition that the live fly is not installed, the bicycle can move forwards and backwards during riding; the movable flying wheelbarrow with changeable transmission ratio after being installed can reliably coast when the pedals or the crank does not rotate in the riding process.

Description of the drawings:

the corresponding drawing lines indicate the names of the parts represented by the corresponding reference numerals as follows:

1 the central axis of the wheel of the vehicle,

2, the flower drum is arranged on the upper portion of the flower drum,

3, the flower drum wheel is arranged on the upper portion of the drum wheel,

4 a driving wheel is arranged on the front end of the main body,

5 a double-layer driving wheel (or a driving wheel),

6, a fork of the bicycle is arranged on the bicycle frame,

7 a saddle of a bicycle, wherein,

8 the right fork arm of the fork of the bicycle,

9 the locking ring is locked to the body,

10 a seat tube for a vehicle, comprising a seat tube,

11 a rim (or wheel),

12 a fork tube of a bicycle, wherein,

13 of the left crank arm,

14 left foot-operated on the left side,

15 a right bearing of the right-hand wheel,

16 of a left bearing and a right bearing,

17 the right bearing is provided with an upper cover,

18 a lower cover of the right bearing is arranged,

19 an upper cover of the left bearing is arranged,

20, a lower cover of the left bearing is arranged,

21 the right crank of the crank shaft is provided with a crank shaft,

22 the right foot-operated device is provided with a pedal,

23 right bearing of the hub (right bearing for mounting the hub),

24 hub left bearing (left bearing for mounting hub),

25 left fork arm of the fork of the bicycle,

26 the right wheel of the double-layer transmission wheel,

27 left wheel of the double-layer transmission wheel.

FIG. 1 is a front elevational view of a wheelbarrow driven with gear engagement;

FIG. 2 is a partial enlarged view of the center shaft, the driving wheel, the double-layer driving wheel, the hub and the like of the wheelbarrow;

FIG. 3 is an exploded view of the central axle and major components on the central axle of the wheelbarrow;

FIG. 4 is a right side view of the wheelbarrow driven with gear engagement;

FIG. 5 is a diagram of the teeth of the driving wheel and the double drive wheel (including the right and left wheels thereof) and the hub wheel of the wheelbarrow designed as teeth suitable for chain drive;

fig. 6 is a front elevational view of the gear and chain driven unicycle.

The specific implementation mode is as follows:

the utility model discloses a pedal monocycle with a changeable transmission ratio, which has the following structure: a saddle 7 (the number of the saddle in the drawing is 7, the numbers below all represent the corresponding numbers of the part names in the drawing) is installed on a saddle tube 10, a fork tube 12, a right fork arm 8, a left fork arm 25, a right bearing upper cover 17, a right bearing lower cover 18, a left bearing upper cover 19, a left bearing lower cover 20 and the like form a fork 6, the saddle tube 10 is installed on the saddle tube 12 by a lock ring 9, one side of the lock ring 9 with screws is the rear side of the bicycle, the right bearing upper cover 17 is welded at the lower end of the right fork arm 8, and the left bearing upper cover 19 is welded at the lower end of the left fork arm 25; the right hub bearing 23 and the left hub bearing 24 are respectively embedded and installed at two ends of the hub 2, the two bearings are respectively installed at corresponding positions of the central shaft 1, the hub and the central shaft can rotate at different speeds, a hub wheel 3 is installed at one end of the hub, the hub wheel and the hub are installed in a convex-concave clamping mode, and the positions of the hub wheel and the hub are relatively fixed; the driving wheel 4 is arranged at the position of the corresponding groove of the central shaft, the driving wheel and the central shaft are arranged in a convex-concave clamping manner, and the positions are relatively fixed; a right bearing 15 and a left bearing 16 are respectively arranged at corresponding positions on two sides of the central shaft, the right bearing is fixed by a right bearing upper cover 17, a right bearing lower cover 18 and a screw nut, and the left bearing is fixed by a left bearing upper cover 19, a left bearing lower cover 20 and a screw nut; the double-layer transmission wheel 5 is formed by fixing or welding a left wheel 27 and a right wheel 26 together and coaxially rotates, the wheel meshed with the hub wheel is called a left wheel, the wheel meshed with the driving wheel 4 is called a right wheel, a bearing is arranged in the center of the double-layer transmission wheel to facilitate smooth rotation, and the double-layer transmission wheel 5 is arranged at the corresponding position of the right fork arm and can freely rotate under the condition of neglecting the control or restriction of the driving wheel 4 and the hub wheel 3; the teeth of the driving wheel are matched and meshed with the teeth of the right wheel of the double-layer driving wheel, the teeth of the flower drum wheel are matched and meshed with the teeth of the left wheel of the double-layer driving wheel, and the driving wheel, the double-layer driving wheel and the flower drum wheel have certain gaps and cannot rub with each other; the right crank 21 is arranged at the right corresponding position of the central shaft and is fixed, the right pedal 22 is arranged on the right crank, the left crank 13 is arranged at the left corresponding position of the central shaft and is fixed, and the left pedal 14 is arranged on the left crank; the wheel (or rim) 11 is mounted on the hub by spokes or corresponding parts, and the wheel is fixed with the hub and the hub wheel.

When riding, a pedal is stepped to rotate a crank clockwise, the crank drives a central shaft to rotate clockwise synchronously, the central shaft drives a driving wheel to rotate clockwise synchronously, the driving wheel drives a right wheel of a double-layer driving wheel to rotate anticlockwise, a left wheel of the double-layer driving wheel rotates anticlockwise synchronously along with the right wheel (because the left wheel and the right wheel of the double-layer driving wheel are welded together or relatively fixed), the left wheel drives a hub wheel to rotate clockwise, and the wheel and the hub rotate clockwise synchronously along with the hub wheel; conversely, if the pedal is depressed to rotate the crank counterclockwise, the wheel will also rotate counterclockwise.

The transmission ratio can be designed to be increased or reduced, and can be reduced, and the tooth number can be designed according to the required transmission ratio.

A design to make the transmission ratio large will now be described. In the drawings, the number of relevant teeth in fig. 1, fig. 2, fig. 3 and fig. 4 is the following design data, the number of teeth of the driving wheel is designed to be 36, the number of teeth of the right wheel of the double-layer driving wheel is designed to be 18, the number of teeth of the left wheel of the double-layer driving wheel is designed to be 36, and the number of teeth of the flower drum wheel is designed to be 18; the pedal rotates clockwise for one circle to drive the crank and the central shaft to rotate clockwise for one circle, the central shaft drives the driving wheel to synchronously rotate clockwise for one circle (namely the pedal rotates clockwise for one circle, the driving wheel synchronously rotates clockwise for one circle), the driving wheel rotates clockwise for one circle to 36 teeth to drive the right wheel of 18 teeth of the double-layer driving wheel to rotate anticlockwise for 2 circles, the left wheel of 36 teeth of the driving wheel rotates anticlockwise for 2 circles, the left wheel of the double-layer driving wheel rotates 72 teeth to drive the hub wheel of 18 teeth to rotate clockwise for 4 circles, because the wheel, the hub and the hub wheel are fixed, the wheel also rotates clockwise for 4 circles, the same direction of the pedal rotation circle of the wheel is realized, the pedal wheel rotates to which direction, the pedal wheel moves forwards, and the pedal wheel moves backwards. When riding a 24-inch unicycle with the transmission ratio, the unicycle can roll 765.64 cm (4 times of 191.41 cm) by stepping on the unicycle for one circle to roll for 4 circles.

If other transmission ratios are required, the number ratio of the teeth can be changed. The number (or called tooth number) of the driving gear teeth is designed to be 27, the number of the right gear teeth of the double-layer transmission wheel is designed to be 18, the number of the left gear teeth of the double-layer transmission wheel is designed to be 27, and the number of the teeth of the jacquard drum wheel is designed to be 18, so that the pedal can be stepped to drive the crank to rotate for one circle, and the wheel rotates for 2.25 circles; the number of teeth of the driving wheel is designed to be 32, the number of teeth of the right wheel of the double-layer driving wheel is designed to be 18, the number of teeth of the left wheel of the double-layer driving wheel is designed to be 32, and the number of teeth of the flower drum wheel is designed to be 18, so that the pedal can be stepped to rotate for one circle to drive the crank to rotate for one circle, and the wheel rotates for 3.16 circles; the number of teeth of the driving wheel is designed to be 34, the number of teeth of the right wheel of the double-layer driving wheel is designed to be 18, the number of teeth of the left wheel of the double-layer driving wheel is designed to be 34, and the number of teeth of the flower drum wheel is designed to be 18, so that the pedal can be stepped to rotate for one circle to drive the crank to rotate for one circle, and the wheel rotates for 3.57 circles; the number of teeth to the action wheel designs for 40, and the number of teeth of the right round of double-deck drive wheel designs for 18, and the number of teeth of the left wheel of double-deck drive wheel designs for 40, and the number of teeth of colored drum wheel designs for 18, can realize stepping on and turn round and drive the crank and turn round wheel 4.94 rings. Other gear ratios are contemplated as desired based upon the desired gear ratios.

Through the description, the crank is arranged on the central shaft of the wheel of the monocycle, the pedal is pedaled by a rider to drive the crank to rotate, the driving wheel fixed on the central shaft is driven to rotate, the double-layer driving wheel drives the flower drum wheel and the flower drum which are movable relative to the central shaft to rotate, so that the wheel is driven to rotate, the number of teeth of the gear is designed according to the number of teeth required by the transmission ratio after the gear is changed or increased as required, and the pedaled monocycle capable of changing the transmission ratio, advancing and retreating is realized.

The movable flywheel (or called as movable fly) is installed on the position of the flower drum wheel 3 except for the position, namely the movable flywheel is installed on the corresponding position of one end of the flower drum, the teeth of the movable flywheel are designed to be matched and meshed with the teeth of the left wheel of the double-layer transmission wheel, the movable flywheel can reliably slide by inertia when the pedals or the crank does not rotate in the riding process, and the number of the teeth of the gears is designed according to the number of teeth required by the transmission ratio after the gears are changed or increased as required, so that the movable fly monocycle with the changeable transmission ratio is realized.

The teeth of the driving wheel 4, the right wheel and the left wheel of the double-layer driving wheel 5 and the teeth of the hub wheel 3 are designed into teeth matched with a mounting chain (figure 5 of the attached drawing), the driving wheel and the right wheel of the double-layer driving wheel are in chain transmission, the hub wheel and the left wheel of the double-layer driving wheel are in chain transmission (figure 6 of the attached drawing), the driving wheel rotates clockwise to drive the corresponding chain to rotate clockwise, the corresponding chain rotates clockwise to drive the right wheel of the double-layer driving wheel to rotate clockwise, the left wheel of the double-layer driving wheel also rotates clockwise synchronously, meanwhile, the chains mounted on the left wheel and the hub wheel are driven to rotate clockwise, and the hub wheel, the hub wheel and the hub wheel also rotate clockwise; when the pedal is pedaled to rotate anticlockwise, the flower drum wheel, the flower drum and the wheel are also driven to rotate anticlockwise. The number of teeth of the gear is designed according to the number of teeth required by the transmission ratio after the gear number is changed or increased as required, so that the pedal monocycle which is driven by the gear and the chain and can change the transmission ratio can move forward and backward during riding.

The flower drum wheel 3 is removed, a movable flywheel is arranged at the position, namely, the movable flywheel is arranged at the corresponding position of one end of the flower drum, the left wheel of the double-layer transmission wheel is designed to be transmitted by a chain and the movable flywheel, the driving wheel and the right wheel of the double-layer transmission wheel are designed to be transmitted by chains, a pedal is stepped to rotate clockwise, wheels also rotate clockwise, the number of teeth of the gears is designed according to the number of teeth required by the transmission ratio after the gear and the chain are changed or increased, and therefore the movable flying monocycle capable of changing the transmission ratio and driven by the gears and the chains is realized, and the reliable inertial sliding is realized when the pedal or the crank is not rotated in the riding process.

Claims (4)

1. A pedal monocycle with changeable transmission ratio comprises a saddle, a saddle tube, a locking ring, a fork, a right pedal, a right crank, a left pedal, a left crank, a right bearing, a left bearing, a central shaft, a driving wheel, a double-layer transmission wheel, a flower drum right bearing, a flower drum left bearing and a wheel, wherein the saddle is arranged on the saddle tube, the saddle tube is arranged on the saddle tube through the locking ring, the right bearing and the left bearing are respectively arranged at corresponding positions on two sides of the central shaft, the right bearing is fixed by a right bearing upper cover, a right bearing lower cover and a screw nut, the left bearing is fixed by a left bearing upper cover, a left bearing lower cover and a screw nut, the right pedal is arranged on the right crank, the right crank is arranged on the right side of the central shaft, the left pedal is arranged on the left side of the central shaft, the wheel is arranged on the flower drum, the flower drum is arranged at one end of the flower drum, the wheel and the flower drum are fixed together, the hub is mounted on the corresponding position of the central shaft by a hub right bearing and a hub left bearing, and can move forward and backward by riding a bicycle.

2. A pedal monocycle with changeable transmission ratio comprises a saddle, a saddle tube, a locking ring, a fork, a right pedal, a right crank, a left pedal, a left crank, a right bearing, a left bearing, a central shaft, a driving wheel, a double-layer driving wheel, a free flywheel, a hub right bearing, a hub left bearing and a wheel, wherein the saddle is arranged on the saddle tube, the saddle tube is arranged on the saddle tube through the locking ring, the right bearing and the left bearing are respectively arranged at corresponding positions on two sides of the central shaft, the right bearing is fixed by a right bearing upper cover, a right bearing lower cover and a screw nut, the left bearing is fixed by a left bearing upper cover, a left bearing lower cover and a screw nut, the right pedal is arranged on the right crank, the right crank is arranged on the right side of the central shaft, the left crank is arranged on the left side of the central shaft, the wheel is arranged on the hub, the hub is arranged at a corresponding position of the central shaft by a hub right bearing and a hub left bearing, the double-layer transmission wheel is arranged at the corresponding position of the right fork arm, the right wheel of the double-layer transmission wheel is fixed with the left wheel, the driving wheel is in meshing transmission with the right wheel of the double-layer transmission wheel, the driving wheel, the double-layer transmission wheel and the free flywheel are designed according to the tooth number required by the required transmission ratio, and the flywheel can reliably coast.

3. A pedal monocycle with changeable transmission ratio comprises a saddle, a saddle tube, a locking ring, a fork, a right pedal, a right crank, a left pedal, a left crank, a right bearing, a left bearing, a central shaft, a driving wheel, a double-layer transmission wheel, a flower drum right bearing, a flower drum left bearing, a chain and a wheel, wherein the saddle is arranged on the saddle tube, the saddle tube is arranged on the saddle tube through the locking ring, the right bearing and the left bearing are respectively arranged at corresponding positions on two sides of the central shaft, the right bearing is fixed by a right bearing upper cover, a right bearing lower cover and a screw nut, the left bearing is fixed by a left bearing upper cover, a left bearing lower cover and a screw nut, the right pedal is arranged on the right crank, the right crank is arranged on the right side of the central shaft, the left crank is arranged on the left side of the central shaft, the wheel is arranged on the flower drum, the flower drum is arranged at one end of the flower drum, and the wheel is fixed with the flower drum and the flower drum, the right hub bearing and the left hub bearing for the hub are arranged at corresponding positions of a central shaft, the driving wheel is arranged at a corresponding position of the central shaft and is fixed, the double-layer driving wheel is arranged at a corresponding position of a right fork arm, the right wheel and the left wheel of the double-layer driving wheel are fixed together, the driving wheel, the double-layer driving wheel and the hub wheel are designed according to the number of teeth required by a required transmission ratio, and the hub wheel can move forward and retreat by riding.

4. A pedal monocycle with changeable transmission ratio comprises a saddle, a saddle tube, a lock ring, a fork, a right pedal, a right crank, a left pedal, a left crank, a right bearing, a left bearing, a central shaft, a driving wheel, a double-layer transmission wheel, a movable flywheel, a hub right bearing, a hub left bearing, a chain and a wheel, wherein the saddle is arranged on the saddle tube, the saddle tube is arranged on the saddle tube through the lock ring, the right bearing and the left bearing are respectively arranged at corresponding positions on two sides of the central shaft, the right bearing is fixed by a right bearing upper cover, a right bearing lower cover and a screw nut, the left bearing is fixed by a left bearing upper cover, a left bearing lower cover and a screw nut, the right pedal is arranged on the right crank, the right crank is arranged on the right side of the central shaft, the left pedal is arranged on the left side of the central shaft, the wheel is arranged on the hub, the movable flywheel is arranged at a corresponding position on one end of the hub, the hub right bearing and the hub left bearing for the hub are arranged at corresponding positions of a central shaft, the driving wheel is arranged at a corresponding position of the central shaft and is fixed, the double-layer driving wheel is arranged at a corresponding position of a right fork arm, a right wheel and a left wheel of the double-layer driving wheel are fixed together, the driving wheel and the right wheel of the double-layer driving wheel are driven by a chain, the driving wheel, the double-layer driving wheel and the free flywheel are designed according to the number of teeth required by a required transmission ratio, and the hub is capable of coasting reliably.

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