Power surfboard transmission system with speed reduction transmission device

Abstract

The invention relates to a power surfboard transmission system with a speed reduction transmission device. The device structurally comprises a conveying assembly, a transmission shaft and a speed reduction driving mechanism. One end of the conveying assembly is fixedly connected with a transmission shaft, the end, away from the conveying assembly, of the transmission shaft is provided with a speed reduction driving mechanism used for improving the propelling efficiency, and the speed reduction driving mechanism is at least one of an engine speed reduction mechanism and a motor speed reduction mechanism. According to the power surfboard transmission shaft, power transmission of the transmission shaft is more efficient, the vibration and noise reduction effect can be achieved, noise and vibration in the operation process are reduced, meanwhile, the protection effect on the power surfboard transmission system is achieved, and the service life of the power surfboard transmission system is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of power surfboards, and particularly to a power surfboard drive system with a speed reduction drive device. Background Art

[0002] A power surfboard is a water equipment that combines technology and sports. It breaks through the dependence on wave conditions in traditional surfing and provides continuous propulsion for surfers with the help of an internal power system, such as a fuel engine or an electric motor. Surfers can flexibly control the speed and direction of the surfboard by operating devices such as a control handle, achieving free riding. Its appearance is usually designed to be compact, combining a sense of fashion and practicality. Power surfboards are suitable for enthusiasts of different levels.

[0003] At present, the drive systems of power surfboards on the market all adopt a direct drive method, that is, a coupling is used to connect the power source (motor, internal combustion engine) to directly drive the propeller, but there are many problems: First, the power characteristics only depend on the design of the power unit, with great limitations; second, the rotational speed and torque are low, the propulsion efficiency is low, the energy consumption is high, and the drive unit cannot exert its maximum power; third, some split drive structures are complex and occupy a large space, which is not conducive to the lightweight of the surfboard; fourth, the high noise and vibration are obvious during operation; fifth, the load fluctuation of the drive unit is large, affecting its service life.

[0004] Therefore, in view of the above problems, a new power surfboard drive system with a speed reduction drive device is proposed. Summary of the Invention

[0005] To overcome the problems existing in the related art, the present invention provides a power surfboard drive system with a speed reduction drive device, which can adopt various speed reduction drive methods, not only improving the transmission efficiency of the drive system, making power transmission more efficient, but also playing a role in vibration reduction and noise reduction, reducing the noise and vibration during operation, and at the same time protecting the drive system, thereby effectively extending the service life of the power surfboard drive system.

[0006] To achieve the above object, the first aspect of the present invention provides a power surfboard drive system with a speed reduction drive device, including: A conveying assembly, a transmission shaft, and a speed reduction drive mechanism; One end of the conveying assembly is fixedly connected to a transmission shaft, and a speed reduction drive mechanism for improving the propulsion efficiency is installed at the end of the transmission shaft away from the conveying assembly. The speed reduction drive mechanism is at least one of an engine speed reduction mechanism and an electric motor speed reduction mechanism.

[0007] Further, the engine speed reduction mechanism includes an engine main body, an engine crankshaft, a driven wheel support, and a speed reduction assembly; On the side of the transmission shaft away from the conveying assembly, there is an engine main body. Inside the engine main body, an engine crankshaft is installed. A reduction assembly connected to the transmission shaft is installed on the engine crankshaft. The reduction assembly is at least one of a gear reduction mechanism, a belt reduction mechanism, and a sprocket reduction mechanism. Inside the engine main body, a driven wheel support located below the engine crankshaft is bolted, and bearings are symmetrically and fixedly connected to the driven wheel support.

[0008] Further, the gear reduction mechanism includes a driving rod, a driving gear, and a first coupling; A driving rod rotatably connected to the engine main body is fixedly connected to the engine crankshaft. At the end of the driving rod away from the engine crankshaft, a driving gear is bolted. At the end of the transmission shaft away from the conveying assembly, a first coupling is bolted. A gear linkage housing is fixedly connected to the first coupling, and the driving gear is meshed with the gear linkage housing.

[0009] Further, on the surface of the end of the driving rod away from the engine crankshaft, slots are symmetrically opened, and blocks slidably inserted through the slots are symmetrically and fixedly connected to the driving gear.

[0010] Further, the belt reduction mechanism includes a secondary transmission wheel, a first driving shaft, a main transmission wheel, and a synchronous belt; A secondary transmission wheel is fixedly connected to the bearing of the driven wheel support. The secondary transmission wheel is bolted to the transmission shaft. A first driving shaft is fixedly connected to the engine crankshaft. A main transmission wheel bolted to the first driving shaft is provided on one side of the secondary transmission wheel. A synchronous belt is meshed with the secondary transmission wheel, and the main transmission wheel is meshed with the synchronous belt.

[0011] Further, the sprocket reduction mechanism includes a driven sprocket, a second driving shaft, a driving sprocket, and a chain; A driven sprocket bolted to the transmission shaft is fixedly connected to the bearing of the driven wheel support. A second driving shaft is fixedly connected to the engine crankshaft. A driving sprocket is bolted to the second driving shaft. A chain is meshed with the driven sprocket, and the driving sprocket is meshed with the chain.

[0012] Further, the motor reduction mechanism includes a motor support, a driving motor, a planetary reduction mechanism, and a second coupling; On the side of the transmission shaft away from the conveying assembly, there is a motor support. A driving motor is installed on the motor support. A planetary reduction mechanism is fixedly installed on the output shaft of the driving motor. A second coupling connected to the transmission shaft is installed on the planetary reduction mechanism, and the reduction ratio of the planetary reduction mechanism is one to three.

[0013] Further, the planetary reduction mechanism includes an internal gear ring, a planetary carrier, planetary gears, and a sun gear; An internal gear ring is installed at one end of the second coupling away from the transmission shaft. A planetary carrier is rotatably connected inside the internal gear ring. Planetary gears are rotatably connected at equal intervals on the planetary carrier. The output shaft of the drive motor is fixedly connected with a sun gear meshed with the planetary gears.

[0014] Further, a circulation pipe communicating with the conveying assembly is connected to the engine speed reduction mechanism.

[0015] Further, the reduction ratio of the gear reduction mechanism is 1:3, the reduction ratio of the belt reduction mechanism is 1:3, and the reduction ratio of the sprocket reduction mechanism is 1:3.

[0016] The technical solutions provided by the present invention may include the following beneficial effects: In this example, by installing the engine speed reduction mechanism and the motor speed reduction mechanism, the reduction drive replaces the direct drive, making the power transmission of the transmission shaft more efficient. It can also play a role in reducing vibration and noise, reducing the noise and vibration during operation. At the same time, it has a protective effect on the power surfboard transmission system, thereby effectively extending the service life of the power surfboard transmission system.

[0017] In this example, by installing the gear reduction mechanism, the belt reduction mechanism, and the sprocket reduction mechanism, the internal combustion engine transmission system can be optimized. These speed reduction mechanisms can effectively improve the transmission efficiency of the internal combustion engine, make the power transmission more efficient, reduce energy loss. At the same time, they can also play a buffering and protective role, reducing the load and wear during the operation of the internal combustion engine, thereby extending the service life of the internal combustion engine.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By describing the exemplary embodiments of the present invention in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present invention will become more obvious. Among them, in the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0020] Figure 1 is a schematic diagram of the overall structure shown in the embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the gear reduction mechanism shown in the embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the belt reduction mechanism shown in the embodiment of the present invention; Figure 4 is a schematic diagram of the structure of the sprocket reduction mechanism shown in the embodiment of the present invention; Figure 5 is a schematic diagram of the structure of the motor reduction mechanism shown in the embodiment of the present invention; Figure 6 This is a schematic structural diagram of the planetary reduction mechanism shown in an embodiment of the present invention.

[0021] The corresponding relationship between the reference numerals and component names in the figure is as follows: 1. Conveyor assembly; 2. Transmission shaft 3. Engine reduction mechanism; 31. Engine main body; 32. Engine crankshaft; 33. Driving rod; 34. Driving gear; 35. First coupling; 36. Driven wheel support; 37. Auxiliary transmission wheel; 38. First driving shaft; 39. Main transmission wheel; 310. Synchronous belt; 311. Driven sprocket; 312. Second driving shaft; 313. Driving sprocket; 314. Chain 4. Motor reduction mechanism; 41. Motor support; 42. Driving motor; 43. Planetary reduction mechanism; 431. Internal gear ring; 432. Planet carrier; 433. Planet gear; 434. Sun gear; 44. Second coupling 5. Circulation pipe Detailed implementation manners

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to be able to fully convey the scope of the present invention to those skilled in the art.

[0023] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "said" used in the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0024] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various pieces of information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first piece of information may also be referred to as the second piece of information, and similarly, the second piece of information may also be referred to as the first piece of information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0025] How to design a power surfboard transmission system with a speed reduction transmission device is the primary technical problem that technicians need to solve at present.

[0026] In view of the above problems, the embodiment of the present invention provides a power surfboard transmission system with a speed reduction transmission device. This structure can adopt various speed reduction drive transmission methods, which not only improves the transmission efficiency of the transmission system, making power transmission more efficient, but also plays a role in vibration reduction and noise reduction, reducing noise and vibration during operation, and at the same time protecting the transmission system, thereby effectively extending the service life of the power surfboard transmission system.

[0027] The following details the technical solutions of the embodiment of the present invention (Embodiment 1) in conjunction with the accompanying drawings.

[0028] Figure 1 is the overall structure schematic diagram shown in the embodiment of the present invention; Figure 2 is the structure schematic diagram of the gear reduction mechanism shown in the embodiment of the present invention; Figure 3 is the structure schematic diagram of the belt reduction mechanism shown in the embodiment of the present invention; Figure 4 is the structure schematic diagram of the sprocket reduction mechanism shown in the embodiment of the present invention; Figure 5 is the structure schematic diagram of the motor reduction mechanism shown in the embodiment of the present invention; Figure 6 is the structure schematic diagram of the planetary reduction mechanism shown in the embodiment of the present invention.

[0029] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , the power surfboard transmission system with a speed reduction transmission device specifically includes: a conveying component 1, a transmission shaft 2, and a speed reduction drive mechanism; One end of the conveying component 1 is fixedly connected to a transmission shaft 2, and a speed reduction drive mechanism for improving the propulsion efficiency is installed at the end of the transmission shaft 2 away from the conveying component 1. The speed reduction drive mechanism is at least one of an engine reduction mechanism 3 and a motor reduction mechanism 4.

[0030] Specifically, the engine deceleration mechanism 3 includes an engine body 31, an engine crankshaft 32, a driven wheel support 36, and a deceleration assembly; On one side of the transmission shaft 2 away from the conveying assembly 1, there is an engine body 31. Inside the engine body 31, there is an engine crankshaft 32 installed. On the engine crankshaft 32, there is a deceleration assembly connected to the transmission shaft 2. The deceleration assembly is at least one of a gear deceleration mechanism, a belt deceleration mechanism, and a sprocket deceleration mechanism. Inside the engine body 31, there is a driven wheel support 36 bolted below the engine crankshaft 32. On the driven wheel support 36, there are bearings symmetrically and fixedly connected. The engine body 31 is a 106CC two-stroke engine.

[0031] Specifically, the gear deceleration mechanism includes a driving rod 33, a driving gear 34, and a first coupling 35; On the engine crankshaft 32, there is a driving rod 33 fixedly connected and rotatably connected to the engine body 31. At one end of the driving rod 33 away from the engine crankshaft 32, there is a driving gear 34 bolted. At one end of the transmission shaft 2 away from the conveying assembly 1, there is a first coupling 35 bolted. On the first coupling 35, there is a gear linkage housing fixedly connected. The driving gear 34 is meshed and connected to the gear linkage housing.

[0032] Specifically, on the surface of one end of the driving rod 33 away from the engine crankshaft 32, there are symmetrically arranged card slots. On the driving gear 34, there are symmetrically and fixedly connected clamping blocks that are slidably inserted through the card slots.

[0033] Specifically, the belt deceleration mechanism includes a secondary transmission wheel 37, a first driving shaft 38, a main transmission wheel 39, and a synchronous belt 310; On the bearing of the driven wheel support 36, there is a secondary transmission wheel 37 fixedly connected. The secondary transmission wheel 37 is bolted to the transmission shaft 2. On the engine crankshaft 32, there is a first driving shaft 38 fixedly connected. On one side of the secondary transmission wheel 37, there is a main transmission wheel 39 bolted to the first driving shaft 38. The secondary transmission wheel 37 is meshed with a synchronous belt 310, and the main transmission wheel 39 is meshed with the synchronous belt 310.

[0034] Specifically, the sprocket deceleration mechanism includes a driven sprocket 311, a second driving shaft 312, a driving sprocket 313, and a chain 314; On the bearing of the driven wheel support 36, there is a driven sprocket 311 fixedly connected and bolted to the transmission shaft 2. On the engine crankshaft 32, there is a second driving shaft 312 fixedly connected. On the second driving shaft 312, there is a driving sprocket 313 bolted. The driven sprocket 311 is meshed with a chain 314, and the driving sprocket 313 is meshed with the chain 314.

[0035] Specifically, the motor reduction mechanism 4 includes a motor support 41, a driving motor 42, a planetary reduction mechanism 43, and a second coupling 44; On one side of the transmission shaft 2 away from the conveying assembly 1, there is a motor support 41. A driving motor 42 is installed on the motor support 41. The output shaft of the driving motor 42 is fixedly installed with a planetary reduction mechanism 43. A second coupling 44 connected to the transmission shaft 2 is installed on the planetary reduction mechanism 43. The reduction ratio of the planetary reduction mechanism 43 is 1:3.

[0036] Specifically, the planetary reduction mechanism 43 includes an internal gear ring 431, a planetary carrier 432, planetary gears 433, and a sun gear 434; One end of the second coupling 44 away from the transmission shaft 2 is installed with an internal gear ring 431. The planetary carrier 432 is rotatably connected inside the internal gear ring 431. The planetary gears 433 are rotatably connected to the planetary carrier 432 at equal intervals. The output shaft of the driving motor 42 is fixedly connected to a sun gear 434 meshing with the planetary gears 433.

[0037] Specifically, a circulation pipe 5 communicating with the conveying assembly 1 is connected to the engine reduction mechanism 3.

[0038] Specifically, the reduction ratio of the gear reduction mechanism is 1:3, the reduction ratio of the belt reduction mechanism is 1:3, and the reduction ratio of the sprocket reduction mechanism is 1:3.

[0039] In the first embodiment, how to use the reduction drive mechanism, combined with Figure 1 and Figure 5 , the specific implementation method is: the reduction drive replaces the direct drive, making the power transmission of the transmission shaft 2 more efficient, and can also play a role in reducing vibration and noise, reducing the noise and vibration during operation, and at the same time protecting the power surfboard drive system, thereby effectively extending the service life of the power surfboard drive system.

[0040] In the second embodiment, how to use the gear reduction mechanism, combined with Figure 2 , the specific implementation method is: move the driving gear 34 close to the driving rod 33, the block enters the card slot, the bolt passes through the driving gear 34 and enters the inside of the driving rod 33. The engine crankshaft 32 inside the engine body 31 starts, driving the driving gear 34 to rotate. The driving gear 34 drives the impeller inside the conveying assembly 1 to rotate. First, the structure is compact and does not occupy too much installation space inside the surfboard, avoiding changing the surfboard shape due to space problems; second, the transmission efficiency is high, and the internal gear transmission efficiency can reach more than 95%, which is better than other transmission methods; third, the load capacity is strong, the internal gear transmission torque transmission ability is high and stable, can bear a large load, and has good durability.

[0041] In this third embodiment, how to use the belt deceleration mechanism, combined with Figure 3 The specific implementation is as follows: the engine crankshaft 32 drives the main transmission wheel 39 to rotate, the main transmission wheel 39 contacts the synchronous belt 310, the synchronous belt 310 drives the auxiliary transmission wheel 37 to rotate, and then drives the impeller inside the conveying component 1 to rotate. First, it has a buffering and vibration absorption function. The elastic belt body can absorb the impact load and reduce the vibration when the surfboard is transmitted; second, it has an overload protection mechanism. When overloaded, the belt slips, which can prevent other components from being damaged and protect the transmission system; third, the structure is simple and the cost is low, the installation and maintenance are convenient, and the manufacturing cost is lower than that of gear transmission; fourth, the noise is low during operation and the transmission process is smooth.

[0042] In this fourth embodiment, how to use the sprocket reduction mechanism, combined with Figure 4 The specific implementation is as follows: the engine crankshaft 32 drives the second driving shaft 312 to rotate, the second driving shaft 312 drives the driving sprocket 313 to rotate, the driving sprocket 313 contacts the chain 314, the chain 314 drives the driven sprocket 311 to rotate, and the driven sprocket 311 drives the impeller inside the conveying component 1 to rotate. This transmission method has high transmission efficiency and high reliability, the average transmission ratio is stable, and there is no elastic sliding phenomenon. The transmission efficiency can reach up to 94%.

[0043] In this fifth embodiment, how to use the motor reduction mechanism 4, combined with Figure 5 and Figure 6 The specific implementation method is as follows: the driving motor 42 on the motor support 41 is started, and the output shaft of the driving motor 42 drives the sun gear 434 to rotate, the sun gear 434 contacts the planetary gear 433, and the planetary gear 433 contacts the inner wall of the inner gear ring 431, driving the inner part of the inner gear ring 431 to rotate, driving the second coupling 44 to rotate, and then driving the impeller inside the conveying component 1 to rotate. First, the structure is compact and the transmission is efficient. It adopts a multi-point meshing design, has a small size, and a transmission efficiency of more than 97%, which can achieve a high reduction ratio in a limited space; second, it has a strong load-bearing capacity and stable operation, the gears are evenly stressed, can still operate stably under heavy load conditions, and has a long service life.

[0044] In this sixth embodiment, how to cool down the engine speed reduction mechanism 3 is combined with Figure 1 The specific implementation method is as follows: a circulation pipe 5 is added to the water outlet of the conveying component 1, and cooling water enters the shell from the water inlet of the engine body 31 to take away the heat generated by the operation of the reduction gear. At the same time, engine oil can be added to the engine body 31 through the oil filling port to lubricate and cool the gear. After the cooling water flows out from the cooling outlet of the engine body 31, it enters the cylinder box from the cylinder cooling inlet again to take away the heat of the piston and the box, and finally flows out from the cylinder cooling outlet.

[0045] The solutions of the present invention have been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have their own focuses. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily essential to the present invention. Additionally, it can be understood that the steps in the method embodiments of the present invention can be adjusted, combined, and deleted according to actual needs, and the structures in the device embodiments of the present invention can be combined, divided, and deleted according to actual needs.

[0046] The various embodiments of the present invention have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skilled persons in the technical field to understand the embodiments disclosed herein.

Claims

1. A power surfboard drive system with a speed reduction drive device, characterized in that, Comprising: A conveying assembly (1), a transmission shaft (2), and a reduction drive mechanism; One end of the conveying assembly (1) is fixedly connected to a transmission shaft (2). At the end of the transmission shaft (2) away from the conveying assembly (1), a reduction drive mechanism for improving the propulsion efficiency is installed. The reduction drive mechanism is at least one of an engine reduction mechanism (3) and a motor reduction mechanism (4).

2. The power surfboard transmission system with a reduction transmission device according to claim 1, characterized in that: The engine reduction mechanism (3) includes an engine body (31), an engine crankshaft (32), a driven wheel support (36), and a reduction assembly; On the side of the transmission shaft (2) away from the conveying assembly (1), there is an engine body (31). Inside the engine body (31), an engine crankshaft (32) is installed. On the engine crankshaft (32), a reduction assembly connected to the transmission shaft (2) is installed. The reduction assembly is at least one of a gear reduction mechanism, a belt reduction mechanism, and a sprocket reduction mechanism. Inside the engine body (31), a driven wheel support (36) located below the engine crankshaft (32) is bolted. On the driven wheel support (36), bearings are symmetrically and fixedly connected.

3. The power surfboard transmission system with a reduction transmission device according to claim 2, characterized in that: The gear reduction mechanism includes a drive rod (33), a drive gear (34), and a first coupling (35); On the engine crankshaft (32), a drive rod (33) rotatably connected to the engine body (31) is fixedly connected. At the end of the drive rod (33) away from the engine crankshaft (32), a drive gear (34) is bolted. At the end of the transmission shaft (2) away from the conveying assembly (1), a first coupling (35) is bolted. On the first coupling (35), a gear linkage housing is fixedly connected. The drive gear (34) is meshed with the gear linkage housing.

4. The power surfboard transmission system with a reduction transmission device according to claim 3, characterized in that: On the surface of the end of the drive rod (33) away from the engine crankshaft (32), clamping grooves are symmetrically formed. On the drive gear (34), clamping blocks symmetrically and fixedly connected to the clamping grooves are slidably inserted.

5. The power surfboard transmission system with a reduction transmission device according to claim 2, characterized in that: The belt reduction mechanism includes a secondary transmission wheel (37), a first driving shaft (38), a primary transmission wheel (39), and a synchronous belt (310); On the bearing of the driven wheel support (36), a secondary transmission wheel (37) is fixedly connected. The secondary transmission wheel (37) is bolted to the transmission shaft (2). On the engine crankshaft (32), a first driving shaft (38) is fixedly connected. On one side of the secondary transmission wheel (37), a primary transmission wheel (39) bolted to the first driving shaft (38) is provided. The secondary transmission wheel (37) is meshed with a synchronous belt (310). The primary transmission wheel (39) is meshed with the synchronous belt (310).

6. The power surfboard transmission system with a speed reduction drive device according to claim 2, wherein: The sprocket reduction mechanism includes a driven sprocket (311), a second driving shaft (312), a driving sprocket (313) and a chain (314); A driven sprocket (311) bolted to the transmission shaft (2) is fixedly connected to the bearing of the driven wheel support (36). A second driving shaft (312) is fixedly connected to the engine crankshaft (32). A driving sprocket (313) is bolted to the second driving shaft (312). A chain (314) is meshed with the driven sprocket (311), and the driving sprocket (313) is meshed with the chain (314).

7. The power surfboard transmission system with a speed reduction drive device according to claim 1, wherein: The motor reduction mechanism (4) includes a motor support (41), a driving motor (42), a planetary reduction mechanism (43) and a second coupling (44); A motor support (41) is provided on the side of the transmission shaft (2) away from the conveying assembly (1). A driving motor (42) is installed on the motor support (41). The output shaft of the driving motor (42) is fixedly installed with a planetary reduction mechanism (43). A second coupling (44) connected to the transmission shaft (2) is installed on the planetary reduction mechanism (43). The reduction ratio of the planetary reduction mechanism (43) is 1:

3.

8. The power surfboard transmission system with a speed reduction drive device according to claim 7, wherein: The planetary reduction mechanism (43) includes an internal gear ring (431), a planetary carrier (432), planetary gears (433) and a sun gear (434); An internal gear ring (431) is installed at one end of the second coupling (44) away from the transmission shaft (2). A planetary carrier (432) is rotatably connected inside the internal gear ring (431). Planetary gears (433) are rotatably connected to the planetary carrier (432) at equal intervals. The output shaft of the driving motor (42) is fixedly connected to a sun gear (434) meshed with the planetary gears (433).

9. The power surfboard transmission system with a speed reduction drive device according to claim 1, wherein: A circulation pipe (5) communicating with the conveying assembly (1) is communicated with the engine reduction mechanism (3).

10. The power surfboard transmission system with a speed reduction drive device according to claim 7, wherein: The reduction ratio of the gear reduction mechanism is 1:3, the reduction ratio of the belt reduction mechanism is 1:3, and the reduction ratio of the sprocket reduction mechanism is 1:3.

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