Transmission device usable for carrying

Abstract

The present application provides a transmission device for load bearing, which comprises a driving assembly, a linkage assembly, a balancing assembly and a flywheel. The driving assembly rotates in response to external force applied by an operator or an external power facility, thereby outputting a driving force to the linkage assembly, so that two support plates of the linkage assembly swing up and down alternately around a fixed shaft, and the balancing assembly balances the downward pulling force generated when the two support plates swing downward. At this time, the front rods symmetrically arranged on the inner sides of the two support plates are alternately rotated by being abutted by a top post, thereby synchronously pushing the rear rods symmetrically arranged on the inner sides of the two support plates to alternately rotate, so that the tooth portions of the rear rods of the two support plates alternately swing and contact the flywheel, so that the flywheel rotates to generate rotational inertia, and then releases the friction after contacting the tooth portions. Thus, the inertia of the flywheel is utilized to provide power assistance to the linkage assembly, so that the operator can operate with less effort.

Description

Technical Field

[0001] This invention belongs to the technical field of transmission devices, and in particular refers to a transmission device that can be used for load bearing. Background Technology

[0002] During the Northern and Southern Dynasties period in China, a water transport device called the "Thousand-Li Ship" was designed. Historical records indicate that the Thousand-Li Ship could reduce manpower requirements through a special mechanical structure and could travel over a hundred li (approximately 50 kilometers) per day, thus being considered a highly efficient water transport tool at the time. However, detailed technical specifications of the Thousand-Li Ship have been lost to history, with only a few surviving documents mentioning its ability to increase speed using paddle wheels or special mechanical structures.

[0003] Since modern times, scholars and engineers have attempted to reconstruct the structure of the long-distance ship based on historical records, speculating that it might have used paddle wheels, water turbines, or gear mechanisms for propulsion. However, these reconstructions often suffer from problems such as complex structures, high costs, and low power output efficiency. Furthermore, existing water transport devices, such as ordinary sailboats or oarboats, mainly rely on wind power or human rowing for propulsion, failing to fully realize the potential advantages of the long-distance ship's automated mechanical drive.

[0004] On the other hand, some modern technologies have proposed water transport devices driven by paddle wheels. For example, Chinese utility model patent CN201720843648.4 describes a water transport transmission device with a paddle wheel structure.

[0005] However, this technology still requires a significant amount of manpower to maintain the propeller rotation, failing to effectively reduce the physical exertion of the operators. Furthermore, the technology is not optimized for the optimal configuration of the propeller and hull structure, resulting in shortcomings in increasing speed and reducing drag. Therefore, the existing technology still faces many challenges, requiring further technological breakthroughs to improve the efficiency and convenience of power transmission.

[0006] Therefore, how to solve the above problems is the primary issue that this invention aims to address. Summary of the Invention

[0007] The main objective of this invention is to provide a transmission device that can be used for load bearing. It uses the gravitational component of the flywheel as the driving force of the rear rod, which has the characteristics of saving effort. It allows the operator to easily output power, and the structure is simple with few parts, thus saving production costs.

[0008] To achieve the aforementioned objectives, the present invention provides a transmission device that can be used for load bearing, comprising:

[0009] A drive assembly is configured to rotate in response to an external force applied by an operator or an external power device, thereby outputting a drive force;

[0010] A linkage assembly includes two symmetrically arranged support plates. The same side ends of the two support plates are sleeved on a fixed shaft. A front rod and a rear rod are symmetrically hinged to the inward sides of the two support plates, respectively. The facing ends of the front rod and the rear rod are free ends, and the rear rod rests on the upper part of the front rod. The ends of the front rod and the rear rod that are far apart from each other are hinged ends to the support plates. The upper part of the rear rod has a toothed portion that is inclined towards the hinged end of the rear rod. The lower part of each of the two support plates has a top post that can abut against the front rod. The ends of the two support plates that are far apart from the fixed shaft are connected to a drive assembly. The drive assembly drives the two support plates to alternately swing up and down around the fixed shaft, so that the front rods of the two support plates are abutted by the top post and rotate alternately around their hinged ends, thereby synchronously pushing the rear rods of the two support plates to rotate alternately around their hinged ends, causing the teeth of the rear rods of the two support plates to swing alternately.

[0011] A balancing component is rotatably provided with a roller, on which a transmission belt is mounted. The two ends of the roller are respectively connected to the ends of the two support plates that are different from the fixed shaft. As the two support plates swing up and down alternately, they pull the transmission belt to rotate the roller, thereby balancing the downward pulling force when the two support plates swing up and down alternately.

[0012] A flywheel is rotatably mounted above the rear rod of the two support plates and has two sides facing opposite directions. The edges of the two sides each have a first tooth surface and a second tooth surface protruding radially. The first tooth surface and the second tooth surface are offset from each other so as to cooperate with the teeth to alternately mesh during the alternating swing of the rear rod, thereby driving the flywheel to rotate and generate rotational inertia.

[0013] Preferably, the two support plates have an extension shaft along the axial direction at one end opposite to the fixed shaft, and the end of the extension shaft is connected to the transmission belt.

[0014] Preferably, the rear rod is fixed with a support rod, and the end of the support rod that is relatively away from the rear rod is provided with a plate. The tooth is formed on the top of the plate, and the end of the support rod that is relatively away from the rear rod is inclined toward the hinge end of the rear rod so that the tooth is inclined in the same direction.

[0015] Preferably, the flywheel can pivot up and down relative to the rear lever.

[0016] Preferably, the pressure angles of the first tooth surface and the second tooth surface are 20° and 30°, respectively.

[0017] Preferably, the drive assembly consists of two coaxially connected rollers, which are respectively located below the two support plates. The ends of the two support plates opposite to the fixed shaft are respectively connected to a connecting rod, and the lower ends of the connecting rods are eccentrically connected to the corresponding rollers.

[0018] Preferably, the connection points of the two rollers and the corresponding connecting rods are offset from each other by 180°.

[0019] Preferably, the two support plates are arranged parallel to each other.

[0020] Preferably, when the front rod is rotated by the top post to the point where its free end abuts and lifts the free end of the rear rod to its highest position, the horizontal distance between the hinged end of the front rod and the junction of the front rod and the rear rod is defined as a first distance, the horizontal distance between the abutting point of the front rod and the rear rod and the hinged end of the rear rod is defined as a second distance, and the horizontal distance between the end of the support plate adjacent to the front rod and the hinged end of the front rod is defined as a third distance. The first distance is 1320mm, the second distance is 680mm, and the third distance is 1000mm, and the sum of the first distance, the second distance, and the third distance is equal to the length of the support plate.

[0021] Preferably, when the front rod is rotated by the top post to the point where its free end abuts and lifts the free end of the rear rod to its highest position, the horizontal distance between the hinged end of the front rod and the junction of the front rod and the rear rod is defined as a first distance, the horizontal distance between the abutting point of the front rod and the rear rod and the hinged end of the rear rod is defined as a second distance, and the horizontal distance between the end of the support plate adjacent to the front rod and the hinged end of the front rod is defined as a third distance. The first distance is 3320mm, the second distance is 680mm, and the third distance is 1000mm, and the sum of the first distance, the second distance, and the third distance is equal to the length of the support plate.

[0022] The above-mentioned objects and advantages of the present invention can be readily understood from the following detailed description and accompanying drawings of the selected embodiments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a side view of the structure of the present invention.

[0025] Figure 2 This is a side view schematic diagram of the action structure of the present invention.

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the flywheel of the present invention.

[0027] Figure 4This is a schematic diagram of the gravitational component of the flywheel of the present invention.

[0028] Figure 5 This is a schematic diagram showing the dimensional proportions of the support plate, front rod, and rear rod of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figure 1 The diagram shows a preferred embodiment of the transmission device of the present invention, which includes a drive assembly 1, a linkage assembly 2, a balancing assembly 3, and a flywheel 4. An operator or an external force device applies an external force to rotate the drive assembly 1, thereby outputting a driving force to the linkage assembly 2, which in turn drives the flywheel 4 to rotate.

[0031] The linkage assembly 2 includes two parallel and symmetrically arranged support plates 21, with their ends on the same side fitted onto a fixed shaft 22. A front rod 23 and a rear rod 24 are symmetrically hinged to the inner sides of the two support plates 21, respectively. The facing ends of the front rod 23 and the rear rod 24 are free ends 232 and 242, respectively, with the rear rod 24 resting on top of the front rod 23. The ends of the front rod 23 and the rear rod 24 that are furthest from each other are hinged ends 231 and 241, respectively, to the support plates 21. A support rod 25 is fixed to each of the two rear rods 24. A plate 26 is provided at the end of the support rod 25 furthest from the rear rod 24, and a tooth 27 is formed on the top of the plate 26. The end of the support rod 25 furthest from the rear rod 24 is inclined towards the hinged end 241 of the rear rod, causing the tooth 27 to also incline in the same direction. Below each of the two support plates 21, there is a top post 28 that can abut against the front rod 23. The end of the two support plates 21 that is relatively far from the fixed shaft 22 is connected to the drive assembly 1. When the drive assembly drives the two support plates 21 to swing up and down alternately around the fixed shaft 22, the front rod 23 of the two support plates 21 is abutted by the top post 28 and swings up and down alternately around its hinge end 231. This, in turn, synchronously pushes the rear rod 24 of the two support plates 21 to rotate up and down alternately around its hinge end 241, thereby driving the teeth 27 of the two support rods 25 to swing up and down alternately.

[0032] The flywheel 4 is rotatably mounted above the rear rod 24 of the two support plates 21, as shown in Figure 3. It has two sides 43 facing opposite directions. The edges of the two sides 43 each have a first tooth surface 41 and a second tooth surface 42 protruding radially. The first tooth surface 41 and the second tooth surface 42 are staggered and their lengths are both half the circumference of the flywheel 4. That is, the adjacent sides of the first tooth surface 41 and the second tooth surface 42 are smooth arc surfaces 44. This allows them to mesh with the corresponding teeth 27 during the alternating swing of the rear rod 24, thereby driving the flywheel 4 to rotate and generate rotational inertia. When the first tooth surface 41 or the second tooth surface 42 of the flywheel 4 meshes with the teeth 27, the flywheel 4 generates a downward gravity due to its own weight. The first tooth surface 41 or the second tooth surface 42 will then apply a downward contact force to the meshing teeth 27. Because the engagement of the first tooth surface 41 and the second tooth surface 42 with the tooth portion 27 is an inclined contact rather than a vertical contact, the gravity G of the flywheel 4, as shown in Figure 4, is decomposed into a vertical component F1 perpendicular to the tooth portion and a horizontal component F2 parallel to the tooth portion. The vertical component F1 will cause the flywheel 4 to exert a certain pressure on the tooth portion 27 to strengthen the meshing contact between the teeth. The horizontal component F2 acts on the meshing point between the flywheel 4 and the tooth portion 27, thereby pushing the rear rod 24 to swing alternately along the direction of movement of the rear rod 24, improving the gear transmission efficiency between the flywheel 4 and the tooth portion 27, and smoothly driving the front rod 23 and the rear rod 24 to swing alternately, thereby achieving the effect of saving effort. Among them, the pressure angle of the first tooth surface 41 and the second tooth surface 42 is preferably 20° or 30° to achieve the best meshing transmission effect. Furthermore, the flywheel 4 system can pivot up and down relative to the rear rod 24, providing a margin of space for meshing with the two tooth portions 27, ensuring that the flywheel 4 is smoothly driven to rotate.

[0033] The drive assembly 1 is located at the end of the two support plates 21 that is relatively far from the fixed shaft 22. The drive assembly 1 includes two coaxially connected rollers 11, each positioned below the two support plates 21. A connecting rod 12 is connected to the end of each support plate 21 facing away from the fixed shaft 22, and the lower end of each connecting rod 12 is eccentrically connected to the corresponding roller 11. The connections between the two rollers 11 and their corresponding connecting rods 12 are offset from each other by 180°.

[0034] like Figure 1 and Figure 2As shown, this embodiment uses the movement of a single-sided support plate 21 as an example: the drive assembly 1 rotates the roller 11 in response to an external force applied by an operator or an external power facility such as a pedal component, a crank component, or an electric motor (not shown). Under the action of the connecting rod 12, the support plate 21 rotates around the fixed shaft 22, thereby synchronously driving the front rod 23 downward. However, due to the push of the top column 28, the front rod 23 lifts the rear rod 24 around its hinge end 231, causing the support rod 25 of the rear rod 24 to engage with the first tooth surface 41 on the opposite side of the flywheel 4 through the tooth 27, thereby driving the flywheel 4 to rotate. The movement of the other symmetrically arranged support plate 21 is the opposite of that of the first support plate 21. In this way, the two support plates 21 alternately swing up and down to contact the flywheel 4. During the continuous contact process, the rotational motion of the flywheel 4 generates a moment of inertia, i.e., a moment of inertia. During the contact friction with the teeth 27 of the two support rods 25, the stored moment of inertia is released to transmit power. At the same time, when the flywheel 4 and the tooth 27 mesh with each other, the gravity G of the flywheel 4 is decomposed into a vertical component F1 and a horizontal component F2. The horizontal component F2 acts on the meshing point of the flywheel 4 and the tooth 27, thereby pushing the rear rod to swing alternately along the direction of movement of the rear rod 24, improving the gear transmission efficiency of the flywheel 4 and the tooth 27. The rotational inertia generated by the rotation of the flywheel 4 and its own gravity are used as the auxiliary drive power source to smoothly drive the front rod 23 and the rear rod 24 to swing alternately, thereby allowing the operator to drive the rotation of the two rollers with less effort.

[0035] To further explain, such as Figure 4 As shown, when the front rod 23 rotates under the pressure of the top column 28 until its free end 232 presses against the free end 242 of the rear rod 24 to its highest position, the horizontal distance between the hinge end 231 of the front rod 23 and the point where the front rod 23 and the rear rod 24 press against each other is defined as the first distance D1; the horizontal distance between the point where the front rod 23 and the rear rod 24 press against each other and the hinge point of the rear rod is defined as the second distance D2; and the horizontal distance between the end of the support plate adjacent to the front rod and the hinge end of the front rod is defined as the third distance D3. In this embodiment, the first distance D1 is 1320 mm, the second distance D2 is 680 mm, and the third distance D3 is 1000 mm. In another embodiment of the present invention, the first distance D1 is 3320 mm, the second distance D2 is 680 mm, and the third distance D3 is 1000 mm.

[0036] To balance the downward pulling force generated by the reciprocating up-and-down swing of the two support plates 21, a roller 31 is rotatably mounted above the end of the two support plates 21 away from the fixed shaft 22 in the balancing assembly 3. A transmission belt 32 is mounted on the roller 31. The transmission belt 32 is connected to the first support plate and the second support plate at its two ends, respectively. As the two support plates 21 swing up and down alternately, the transmission belt 32 is pulled, causing the roller 31 to rotate, thereby balancing the pulling force when the support plates 21 rotate downward. An extension shaft 29 is provided axially at the end of the two support plates 21 away from the fixed shaft 22, and the extension shaft 29 is connected to the transmission belt 32.

[0037] Based on the above description, the transmission device for load bearing provided by the present invention achieves the following improvements:

[0038] First, it is easy to operate; the invention utilizes the inertia of the flywheel to assist the linkage components, so that the operator can operate the transmission device with less effort.

[0039] Secondly, it has excellent operational stability; the present invention uses a balancing component to balance the downward force generated by the alternating up and down swinging of the linkage component, thus avoiding the instantaneous downward force from causing the entire transmission device to shake and affecting operation.

[0040] Third, the structure is simple; the present invention simplifies the structure, reduces assembly parts, is easy to assemble, and has low production costs.

[0041] However, the above embodiments are only for illustrating the present invention and are not intended to limit the present invention. Therefore, any changes in numerical values ​​or substitutions of equivalent elements should still fall within the scope of the present invention.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission device that can be used for load bearing, characterized in that: A drive assembly is configured to rotate in response to an external force applied by an operator or an external power device, thereby outputting a drive force; A linkage assembly includes two symmetrically arranged support plates. The same side ends of the two support plates are sleeved on a fixed shaft. A front rod and a rear rod are symmetrically hinged to the inward sides of the two support plates, respectively. The facing ends of the front rod and the rear rod are free ends, and the rear rod rests on the upper part of the front rod. The ends of the front rod and the rear rod that are far apart from each other are hinged ends to the support plates. The upper part of the rear rod has a toothed portion that is inclined towards the hinged end of the rear rod. The lower part of each of the two support plates has a top post that can abut against the front rod. The ends of the two support plates that are far apart from the fixed shaft are connected to a drive assembly. The drive assembly drives the two support plates to alternately swing up and down around the fixed shaft, so that the front rods of the two support plates are abutted by the top post and rotate alternately around their hinged ends, thereby synchronously pushing the rear rods of the two support plates to rotate alternately around their hinged ends, causing the teeth of the rear rods of the two support plates to swing alternately. A balancing component is rotatably provided with a roller, on which a transmission belt is mounted. The two ends of the roller are respectively connected to the ends of the two support plates that are different from the fixed shaft. As the two support plates swing up and down alternately, they pull the transmission belt to rotate the roller, thereby balancing the downward pulling force when the two support plates swing up and down alternately. A flywheel is rotatably mounted above the rear rod of the two support plates and has two sides facing opposite directions. The edges of the two sides each have a first tooth surface and a second tooth surface protruding radially. The first tooth surface and the second tooth surface are offset from each other to cooperate with the teeth to alternately mesh during the alternating swing of the rear rod, so as to drive the flywheel to rotate and generate rotational inertia.

2. The transmission device for bearing loads according to claim 1, characterized in that, The two support plates have an extension shaft along the axial direction at one end opposite to the fixed shaft, and the end of the extension shaft is connected to the transmission belt.

3. The transmission device for bearing loads according to claim 1, characterized in that, The rear rod is fixed with a support rod, and the end of the support rod that is relatively away from the rear rod has a plate. The tooth is formed on the top of the plate. The end of the support rod that is relatively away from the rear rod is inclined toward the hinge end of the rear rod so that the tooth is inclined in the same direction.

4. The transmission device for bearing loads according to claim 1, characterized in that, The flywheel can pivot up and down relative to the rear lever.

5. The transmission device for bearing loads according to claim 1, characterized in that, The pressure angles of the first tooth surface and the second tooth surface are 20° and 30°, respectively.

6. The transmission device for bearing loads according to claim 1, characterized in that, The drive assembly consists of two coaxially connected rollers, which are respectively located below the two support plates. The ends of the two support plates opposite to the fixed shaft are respectively connected to a connecting rod, and the lower ends of the connecting rods are eccentrically connected to the corresponding rollers.

7. The transmission device for bearing loads according to claim 6, characterized in that, The two rollers are offset from the corresponding connecting rods at their connection points, with a difference of 180°.

8. The transmission device for bearing loads according to claim 1, characterized in that, The two support plates are arranged parallel to each other.

9. The transmission device for bearing loads according to claim 1, characterized in that, When the front rod is rotated by the top column until its free end abuts and lifts the free end of the rear rod to its highest position, the horizontal distance between the hinge end of the front rod and the junction of the front rod and the rear rod is defined as the first distance, the horizontal distance between the abutment point of the front rod and the rear rod and the hinge end of the rear rod is defined as the second distance, and the horizontal distance between the end of the support plate adjacent to the front rod and the hinge end of the front rod is defined as the third distance. The first distance is 1320mm, the second distance is 680mm, and the third distance is 1000mm. The sum of the first distance, the second distance, and the third distance is equal to the length of the support plate.

10. The transmission device for bearing loads according to claim 1, characterized in that, When the front rod is rotated by the top column until its free end abuts and lifts the free end of the rear rod to its highest position, the horizontal distance between the hinge end of the front rod and the point where the front rod and the rear rod abut each other is defined as the first distance, the horizontal distance between the junction of the front rod and the rear rod and the hinge end of the rear rod is defined as the second distance, and the horizontal distance between the end of the support plate adjacent to the front rod and the hinge end of the front rod is defined as the third distance. The first distance is 3320mm, the second distance is 680mm, and the third distance is 1000mm. The sum of the first distance, the second distance, and the third distance is equal to the length of the support plate.

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