Cycling transport plane amusement equipment

By designing a bicycle transport amusement equipment that combines bicycles and transmission mechanisms, the safe transport of toys and collaborative exercise are achieved, solving the problem of the single function of existing amusement equipment and providing safety and opportunities for cooperation.

CN223846224UActive Publication Date: 2026-01-30SHANGHAI SOONG CHING LING EARLY CHILDHOOD RES CENT
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Patent Information

Application Number
CN202423194888.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2026-01-30
Estimated Expiration
2034-12-23

AI Technical Summary

Technical Problem

Existing amusement equipment lacks versatility and cannot simultaneously exercise children's bodies and cultivate their teamwork skills.

Method used

Design a ride-on transport amusement device that combines a bicycle, a transmission mechanism, and a conveyor mechanism. The bicycle provides power to the conveyor mechanism to transport toys, while a protective cabinet ensures safety and opportunities for collaboration.

Benefits of technology

Playing helps children exercise, develop teamwork skills, provide a safe play environment, and improve their ability to organize toys.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223846224U_ABST
    Figure CN223846224U_ABST
Patent Text Reader

Abstract

The utility model discloses riding transport plane amusement equipment which comprises a bicycle, a transmission mechanism, a conveying mechanism and a protection cabinet. The bicycle at least comprises a front wheel, a rear wheel, pedals, a rear axle and a bicycle chain assembly. The transmission mechanism is connected with the bicycle and the conveying mechanism and comprises a driving wheel, a transmission wheel, a transmission chain and a transmission shaft; the conveying mechanism comprises a conveying frame, a driving conveying wheel, a driven conveying wheel and a conveying belt; the protection cabinet is used for containing the transmission mechanism and a part of the structure of the bicycle. The bicycle drives the transmission mechanism to operate, the transmission shaft drives the driving conveying wheel to rotate, and the conveying belt rotates around the driving conveying wheel and the driven conveying wheel to convey toys. According to the utility model, a safe amusement environment can be provided, the bodies of players can be fully exercised during playing, and the mutual cooperation ability among the players can be cultivated.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of amusement park amusement equipment technical field, in particular to a kind of bicycle conveyor amusement equipment. BACKGROUND

[0002] Amusement equipment refers to the equipment that can provide amusement play, and the amusement equipment needs to be constantly carefully designed new project for the characteristics of naughty juvenile children.

[0003] The existing amusement equipment such as slide, swing, carousel, roller coaster etc. are all for providing stimulating feeling for players, and most of the amusement equipment only provides amusement effect, and few amusement equipment can have multiple functions.

[0004] In view of the limitation of existing amusement equipment, it is necessary to design a new amusement equipment, which can fully exercise the body of juvenile children and cultivate the mutual cooperation ability among children. CONTENT OF UTILITY MODEL

[0005] The main purpose of the utility model is to provide a kind of bicycle conveyor amusement equipment, which can provide safe amusement environment, and can fully exercise the body of players and cultivate the mutual cooperation ability among players in play.

[0006] Other purposes and advantages of the utility model can be further understood from the technical features disclosed in the utility model.

[0007] To achieve the above object, the utility model discloses the following technical scheme: a kind of bicycle transport machine amusement equipment includes bicycle, transmission mechanism, conveying mechanism and protection cabinet.The bicycle at least includes front wheel, rear wheel, pedal, rear wheel axle and chain assembly;When player applies power to the pedal, the chain assembly transmits the power to the rear wheel axle, the rear wheel axle and the rear wheel rotate together.The transmission mechanism connects the bicycle and the conveying mechanism, and the transmission mechanism includes driving wheel, transmission wheel, transmission chain and transmission shaft;Wherein the driving wheel is fixedly connected to the rear wheel axle;The transmission chain connects the driving wheel and the transmission wheel;One end of the transmission shaft is fixedly connected to the transmission wheel, and the other end of the transmission shaft is fixedly connected to the conveying mechanism;When the rear wheel axle rotates, it drives the driving wheel to rotate together, and drives the transmission wheel to rotate through the transmission chain, and the transmission shaft rotates together with the transmission wheel.The conveying mechanism is used to receive the power and transport toys to designated area;The conveying mechanism includes conveying frame, active conveying wheel, passive conveying wheel and conveying belt, wherein the active conveying wheel is rotatably arranged at one end of the conveying frame, and is fixedly connected to the transmission shaft;The passive conveying wheel is arranged at the other end of the conveying frame;The conveying belt connects the active conveying wheel and the passive conveying wheel, and is used to carry the toys;When the transmission mechanism operates, the transmission shaft rotates with the active conveying wheel, and the active conveying wheel drives the conveying belt to rotate around the active conveying wheel and the passive conveying wheel to transport the toys.The protection cabinet is used to accommodate part of the structure of the transmission mechanism and the bicycle.

[0008] In one embodiment, a pair of supports are arranged in the protection cabinet;The bicycle includes rear axle rod, which protrudes out of both sides of the rear wheel axle;Wherein, the rear axle rod is erected on the support to raise the rear wheel.

[0009] In one embodiment, the outer periphery of the conveying belt is provided with a plurality of parallel baffles arranged along the conveying direction, and a conveying space is formed between adjacent baffles for placing the toys.

[0010] In one embodiment, the conveying frame has a base and two symmetrical side plates fixed to the base, the base is placed on the ground, and the conveying belt is located between the two side plates, and the side plates are used to protect the toys in conveying.

[0011] In one embodiment, the bicycle further includes a rear wheel fork;The driving wheel is mounted to one side of the rear wheel axle and located between the rear wheel and the rear wheel fork.

[0012] In one embodiment, the transmission wheel and the driving wheel are arranged in an up-down manner, the transmission wheel is arranged above the driving wheel, and the transmission chain vertically connects the transmission wheel and the driving wheel.

[0013] In another embodiment, the rear wheel of the bicycle can serve as the driving wheel of the transmission mechanism, the transmission wheel is located behind the driving wheel, the transmission chain of the transmission mechanism horizontally connects the driving wheel and the transmission wheel, and the transmission wheel and the transmission shaft are driven to rotate together by the transmission chain when the rear wheel of the bicycle rotates.

[0014] In one embodiment, the protection cabinet is made of a light-transmitting material.

[0015] In one embodiment, the top end of the bracket is fork-shaped, the bracket is a separate component and is arranged in the protection cabinet, or the bracket is a bicycle part mounted on the rear axle rod of the bicycle.

[0016] In one embodiment, the side plates of the conveying frame are long strips and are inclined upward, and the driving conveying wheel and the driven conveying wheel are arranged between the two side plates.

[0017] Compared with the prior art, the bicycle conveyor amusement device of the utility model can provide players with an opportunity to exercise while playing, can smoothly transmit the power of the bicycle to the conveying mechanism through the transmission mechanism, and can ensure the safety of players through the protection of the protection cabinet, so as to provide a safe playing environment. Meanwhile, the conveying mechanism can make players arrange toys to a designated area, which not only improves the arrangement ability of players to toys, but also enables players to complete the amusement work of toy storage together, so as to cultivate the mutual cooperation ability of players in the amusement. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a layout schematic view of the bicycle conveyor amusement device of one embodiment of the utility model, in which the transmission mechanism in the protection cabinet is not shown, and only the rear wheel of the bicycle in the protection cabinet is shown;

[0019] Figure 2 Fig. 3 is a three-dimensional structure schematic view of the conveying mechanism and the transmission mechanism of one embodiment of the utility model, in which one cabinet plate of the protection cabinet of the transmission mechanism is removed to simulate the display of the transmission mechanism;

[0020] Figure 3 Fig. 4 is an enlarged view of the protection cabinet shown in Fig. 3; Figure 2 Fig. 5 is an enlarged view of the protection cabinet shown in Fig. 4;

[0021] Figure 4Fig. 1 is a perspective view of a bicycle according to an embodiment of the present application; Figure 2 Fig. 2 is a front view of the transport mechanism and transmission mechanism shown in Fig. 1;

[0022] Figure 5 Fig. 3 is a top view of the transport mechanism and transmission mechanism shown in Fig. 1, wherein the transmission mechanism is shown in the protection cabinet by dotted lines; Figure 2

[0023] Figure 6 Fig. 4 is a perspective view of a bicycle according to another embodiment of the present application;

[0024] Figure 7 Fig. 5 is a top view of the bicycle shown in Fig. 4; Figure 6

[0025] Figure 8 Fig. 6 is a front view of the bicycle shown in Fig. 4, wherein the relative position relationship between a part of structure of the transmission mechanism and the bicycle is shown by dotted lines; Figure 6

[0026] Figure 9 Fig. 7 is a layout schematic view of a bicycle conveyor amusement device according to another embodiment of the present application.

[0027] The reference signs in the above-mentioned drawings are explained as follows:

[0028] Bicycle conveyor amusement device 1 Bicycle 10, 10a

[0029] Front wheel 11 Rear wheel 12, 12a

[0030] Pedal 13 Rear wheel axle 14

[0031] Chain assembly 15 Bicycle seat 16

[0032] Rear wheel fork 17 Crank 18

[0033] Rear axle rod 19 Transmission mechanism 20, 20a

[0034] Driving wheel 21, 21a Shaft sleeve 210

[0035] Transmission wheel 22, 22a Transmission chain 23, 23a

[0036] Transmission shaft 24, 24a Transport mechanism 30, 30a

[0037] Transport frame 31 Driving transport wheel 32

[0038] Passive transport wheel 33 Transport belt 34

[0039] Base 310 Side plate 311

[0040] Baffle 340 Protection cabinet 40​​​

[0041] support 50 toy 60 DETAILED DESCRIPTION

[0042] The following description of the embodiments with reference to the accompanying drawings is used to illustrate specific embodiments that can be implemented by the present application. The directions mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc. are only the directions of the accompanying drawings. Therefore, the directions used are used to illustrate and understand the present application, not to limit the present application.

[0043] The bicycle conveyor amusement device of the present application can allow one player or multiple players (such as children) to be responsible for placing toys (such as foam boards or building blocks, etc.) on the conveying mechanism, while another player is responsible for riding (or: pedaling or stepping) the bicycle to drive the conveying mechanism to operate, thereby transporting the toys to the designated area. Through the bicycle conveyor amusement device of the present application, players not only can complete the toy transportation and have a strong sense of achievement, but also can find fun in transportation, exercise the body, and cultivate the spirit of unity and cooperation.

[0044] Please refer to Figure 1 and Figure 2 , in one embodiment, the bicycle conveyor amusement device 1 of the present application includes a bicycle 10, a transmission mechanism 20, a conveying mechanism 30, and a protection cabinet 40. In one embodiment, the bicycle 10 is arranged on one side of the conveying mechanism 30, the transmission mechanism 20 is arranged between the bicycle 10 and the conveying mechanism 30, and the protection cabinet 40 is arranged behind the bicycle 10 to protect the transmission mechanism 20 and part of the structure of the bicycle 10.

[0045] The structure and connection relationship of each component of one embodiment of the present application and the operation principle will be described in detail below.

[0046] The bicycle 10 is used to provide power. Specifically, the bicycle 10 is used to drive the player to provide the original power required for the operation of the bicycle conveyor amusement device 1, part of the structure of the bicycle 10 is arranged in the protection cabinet 40, and the other part of the structure is arranged outside the protection cabinet 40.

[0047] Specifically, please refer to Figure 6 and Figure 7As shown, in one embodiment, the bicycle 10 at least includes a front wheel 11, a rear wheel 12, pedals 13, a rear axle 14, and a chain assembly 15, which at least includes a chain, a sprocket (a driving gear), and a freewheel (a driven gear). The bicycle 10 can also include a seat 16, a rear fork 17, a crank 18, etc. The bicycle 10 provided in the present application works as follows: when a player exerts force on the pedals 13, the force is transmitted to the rear axle 14 through the chain assembly 15, and then the rear wheel 12 is driven to rotate. More specifically, for example, a player can step on the pedals 13 with his feet or swing the pedals 13 with his hands, and the force is transmitted to the rear axle 14 through the crank 18, the sprocket, the chain, the freewheel, etc. In the present application, the rear wheel 12 of the bicycle 10 is supported by the support 50 (see Figure 3 ), so even if the rear wheel 12 rotates, the bicycle 10 will not move forward. In the present application, the rotation of the rear axle 14 will drive the transmission mechanism 20 to rotate.

[0048] The transmission mechanism 20 is connected to the bicycle 10 and the conveying mechanism 30, and is used to transmit the power of the bicycle 10 to the conveying mechanism 30. Specifically, please refer to Figure 3 , Figure 4 and Figure 5 , in one embodiment, the transmission mechanism 20 includes a driving wheel 21, a transmission wheel 22, a transmission chain 23, and a transmission shaft 24. The driving wheel 21 is fixedly connected to the rear axle 14 of the bicycle 10, for example, an axle sleeve 210 (see Figure 3 and Figure 5 ) is arranged at the center of the driving wheel 21, and the driving wheel 21 is fixedly connected to the rear axle 14 by sleeving the axle sleeve 210 on the rear axle 14. The driving wheel 21 is installed on one side of the rear axle 14, for example, the driving wheel 21 can be installed on the left side or the right side of the rear axle 14, and located between the rear wheel 12 and the rear fork 17; the transmission chain 23 connects the driving wheel 21 and the transmission wheel 22; one end of the transmission shaft 24 is fixedly connected to the transmission wheel 22, and the other end of the transmission shaft 24 is fixedly connected to the conveying mechanism 30, for example, the transmission shaft 24 is fixedly connected to the driving wheel 32 of the conveying mechanism 30.

[0049] Further, in one embodiment, the transmission mechanism 20 is fixed and installed by fixing the transmission shaft 24 to the conveying mechanism 30, connecting the transmission wheel 22 to the transmission shaft 24, and then connecting the driving wheel 21 and the transmission wheel 22 through the transmission chain 23. As shown in Figure 3 and Figure 8As shown, in one embodiment, the drive wheel 21 and the transmission wheel 22 are arranged vertically, and the drive wheel 21 is fixed to one side of the rear wheel shaft 14, and the transmission wheel 22 is arranged above the drive wheel 21, and the transmission chain 23 is arranged vertically to vertically connect the drive wheel 21 and the transmission wheel 22, which can ensure the normal operation of the bicycle 10 and the transmission mechanism 20. The so-called "vertically arranged drive wheel 21 and transmission wheel 22" can be that the transmission wheel 22 is directly above or obliquely above the drive wheel 21, and the vertically arranged transmission chain 23 is not only in a completely vertical state, but also in a slightly inclined state, which is relative to the completely horizontal arrangement. In addition, Figure 3 In the middle, only the models of the drive wheel 21, the transmission wheel 22 and the transmission chain 23 are drawn to show the connection relationship therebetween, so that the working principle of the transmission mechanism 20 can be understood. Figure 3 The structural details of the transmission mechanism 20 are not drawn, such as the teeth of the drive wheel 21 and the transmission wheel 22, and the chain details of the transmission chain 23 are not shown.

[0050] When the rear wheel shaft 14 of the bicycle 10 rotates, since the drive wheel 21 is fixed to the rear wheel shaft 14, the drive wheel 21 will rotate with the rear wheel shaft 14, and then the transmission wheel 22 will also rotate under the action of the transmission chain 23, and the transmission shaft 24 will also rotate. In one embodiment, the drive wheel 21 and the transmission wheel 22 are both gears, and the transmission chain 23 is a toothed chain. In other embodiments, the drive wheel 21 and the transmission wheel 22 can also be belt pulleys, and the transmission chain 23 can be a transmission belt. Therefore, the application is not limited to the structure of the transmission mechanism 20, as long as the power of the bicycle 10 can be transmitted to the conveying mechanism 30.

[0051] The conveying mechanism 30 is used to receive power and convey toys to a designated area by power. Specifically, please refer to Figure 2 and Figure 5 As shown, in one embodiment, the conveying mechanism 30 includes a conveying frame 31, a driving conveying wheel 32, a driven conveying wheel 33 and a conveying belt 34.

[0052] In one embodiment, as shown in Figure 5As shown, the conveying frame 31 has a base 310, which is placed on the ground to provide stability, and two symmetrical side plates 311 fixed to the base 310. The conveying belt 34 is located between the two side plates 311, which can be used to protect the toys being conveyed from falling off from the sides. In one embodiment, the side plates 311 of the conveying frame 31 are long and inclined upward. The driving conveying wheel 32 is rotatably arranged at one end (e.g., the low end) of the conveying frame 31 and located between the two side plates 311, and is connected to the transmission shaft 24 of the transmission mechanism 20. The passive conveying wheel 33 is arranged at the other end (e.g., the high end) of the conveying frame 31 and located between the two side plates 311. The conveying belt 34 is connected to the driving conveying wheel 32 and the passive conveying wheel 33 to carry and transport the toys. In one embodiment, the driving conveying wheel 32 and the passive conveying wheel 33 can be only one shaft or a cylindrical conveying wheel installed on the shaft. When the driving conveying wheel 32 is a shaft, it can be connected to the transmission shaft 24 or directly made as one shaft member with the transmission shaft 24. In one embodiment, the length of the conveying frame 31 can be set according to the size of the site, and a toy storage box (not shown) or a designated toy storage area can be set below the high end of the conveying frame 31.

[0053] When the transmission mechanism 20 is in operation, the transmission shaft 24 rotates with the driving conveying wheel 32, which drives the conveying belt 34 to rotate around the driving conveying wheel 32 and the passive conveying wheel 33. In the process of the conveying belt 34 rotating, the toys can be conveyed from one end of the conveying frame 31 to the other end and then dropped into the designated area. In one embodiment, as shown in Figure 2 , the outer periphery of the conveying belt 34 is provided with a plurality of parallel baffles 340 arranged along the conveying direction. The conveying space is formed between adjacent baffles 340 to place the toys 60 to be conveyed.

[0054] The protection cabinet 40 is used to accommodate the transmission mechanism 20 and part of the structure of the bicycle 10 to avoid potential risks, such as avoiding the player from being pinched or injured by the transmission mechanism 20, while ensuring the normal operation of the transmission mechanism 20. In one embodiment, as shown in Figure 1 , Figure 2 and Figure 3 , a pair of supports 50 (see Figure 2), the top end of the support 50 is fork-shaped, and is used to prop up or lift the rear wheel 12 of the bicycle 10. Of course, the pair of supports 50 can be separate components and can be accommodated in the protection cabinet 40; or the supports 50 can be directly arranged on the bicycle 10, for example, the supports 50 can be a bicycle 10 part mounted to the rear axle rod 19 of the bicycle 10, as long as the rear wheel 12 of the bicycle 10 can be lifted. In one embodiment, the protection cabinet 40 can be made of a light-transmitting material (for example, using inorganic and organic transparent materials) to facilitate observation by the players, increase the interest in the game, and arouse the interest and knowledge of the players.

[0055] Specifically, the bicycle 10 includes a rear axle rod 19 (see Figure 7 ), which protrudes out of both sides of the rear wheel shaft 14, and is arranged on the support 50 of the protection cabinet 40, thereby lifting the rear wheel 12 of the bicycle 10, so that the bicycle 10 cannot move forward due to the rotation of the rear wheel 12.

[0056] In another embodiment, as shown in Figure 9 , the transmission mechanism 20a includes a drive wheel 21a, a transmission wheel 22a, a transmission chain 23a, and a transmission shaft 24a. The drive wheel 21a is directly replaced by the rear wheel 12a of the bicycle 10a; that is, the rear wheel 12a of the bicycle 10a can serve as the drive wheel 21a of the transmission mechanism 20a; or in other words, the rear wheel 12a of the bicycle 10a and the drive wheel 21a of the transmission mechanism 20a are the same wheel. At this time, the drive wheel 21a (i.e., the rear wheel 12a) and the transmission wheel 22a are arranged in the front-rear direction, i.e., the transmission wheel 22a is located behind the drive wheel 21a. The transmission wheel 22a can be replaced by the end of the transmission shaft 24a, or can be a separate component mounted to one end of the transmission shaft 24a. The transmission chain 23a is horizontally arranged to horizontally connect the drive wheel 21a and the transmission wheel 22a. When the rear wheel 12a of the bicycle 10a rotates, the transmission wheel 22a and the transmission shaft 24a will be rotated together under the action of the transmission chain 23a, thereby transmitting power to the conveying mechanism 30a.

[0057] In summary, the bicycle conveyor amusement device 1 of the present application can provide players with the opportunity to exercise while playing by applying the bicycle 10 to the game, and the power of the bicycle 10 can be smoothly transmitted to the conveying mechanism 30 through the transmission mechanism 20, and the safety of the players can be ensured by the protection cabinet 40, thereby providing a safe game environment. At the same time, by arranging the conveying mechanism 30, the players can sort the toys into a designated toy storage area, which not only improves the players' ability to sort toys, but also enables the players riding the bicycle 10 to jointly complete the toy storage game, thereby cultivating the players' ability to cooperate with each other in the game.

Claims

1. A bicycle conveyor amusement apparatus characterized by, The bicycle, transmission mechanism, conveying mechanism and protection cabinet are included. The bicycle at least includes a front wheel, a rear wheel, pedals, a rear axle and a chain assembly, when the player applies power to the pedals, the chain assembly transmits the power to the rear axle, and the rear wheel rotates together with the rear axle. The transmission mechanism connects the bicycle and the conveying mechanism, and includes a driving wheel, a transmission wheel, a transmission chain and a transmission shaft. The driving wheel is fixedly connected to the rear axle, the transmission chain connects the driving wheel and the transmission wheel, one end of the transmission shaft is fixedly connected to the transmission wheel, and the other end of the transmission shaft is fixedly connected to the conveying mechanism. When the rear axle rotates, the driving wheel rotates together, the transmission chain drives the transmission wheel to rotate, and the transmission shaft rotates together with the transmission wheel. The conveying mechanism is used to receive the power and convey toys to a designated area, and includes a conveying frame, a driving conveying wheel, a driven conveying wheel and a conveying belt. The driving conveying wheel is rotatably arranged at one end of the conveying frame and is fixedly connected to the transmission shaft, the driven conveying wheel is arranged at the other end of the conveying frame, and the conveying belt connects the driving conveying wheel and the driven conveying wheel and is used to carry the toys. When the transmission mechanism operates, the transmission shaft drives the driving conveying wheel to rotate, the driving conveying wheel drives the conveying belt to rotate around the driving conveying wheel and the driven conveying wheel to convey the toys. The protection cabinet is used to accommodate the transmission mechanism and part of the structure of the bicycle.

2. The bicycle conveyor amusement device according to claim 1, wherein: A pair of supports are arranged in the protection cabinet. The bicycle includes a rear axle rod which protrudes out of both sides of the rear axle. The rear axle rod is arranged on the supports to elevate the rear wheel.

3. The bicycle conveyor amusement device according to claim 1, wherein: The outer periphery of the conveying belt is provided with a plurality of parallel baffles arranged along the conveying direction, and conveying spaces are formed between adjacent baffles to place the toys.

4. The bicycle conveyor amusement device according to claim 3, wherein: The conveying frame has a base and two symmetrical side plates fixed to the base, the base is placed on the ground, the conveying belt is located between the two side plates, and the side plates are used to protect the toys in the conveying process.

5. The bicycle conveyor amusement device according to claim 1, wherein: The bicycle further includes a rear wheel fork. The driving wheel is installed to one side of the rear axle and is located between the rear wheel and the rear wheel fork.

6. The bicycle conveyor amusement device according to claim 5, wherein: The transmission wheel and the driving wheel are arranged vertically, the transmission wheel is arranged above the driving wheel, and the transmission chain vertically connects the transmission wheel and the driving wheel.

7. The bicycle conveyor amusement device according to claim 1, wherein: The rear wheel of the bicycle serves as the driving wheel of the transmission mechanism, and the transmission wheel is located behind the driving wheel; The transmission chain of the transmission mechanism horizontally connects the driving wheel and the transmission wheel, and when the rear wheel of the bicycle rotates, the transmission chain drives the transmission wheel and the transmission shaft to rotate together.

8. The bicycle conveyor amusement device according to claim 1, wherein: The protection cabinet is made of a light-transmitting material.

9. The bicycle conveyor amusement device according to claim 2, wherein: The top end of the support is fork-shaped; The support is a separate component and is arranged in the protection cabinet, or the support is a bicycle part mounted on the rear axle rod of the bicycle.

10. The bicycle conveyor amusement device according to claim 4, wherein: The side plates of the conveying frame are long strips and are upwardly inclined; The driving conveying wheel and the driven conveying wheel are arranged between the two side plates.