Pedal pleasure boat capable of being driven by two persons

By designing the main transmission device, auxiliary transmission device and steering device in the double-person pedal boat, the problems of low tacit understanding and insufficient safety when driving in the prior art are solved, and a higher level of driving tacit understanding and safety are achieved.

CN119659906APending Publication Date: 2025-03-21NANTONG UNIV
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Patent Information

Application Number
CN202411828962.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

The driving structure of the existing double-person pedal boat is simple, which makes it possible for the pedal shaft of the idle tourists to rotate with the propeller when one person provides power, affecting tourists' appreciation of the scenery and rest; at the same time, it is difficult to ensure tacit understanding when driving with double-person, which may lead to safety risks.

Method used

A double-driven pedal boat was designed, using a combination of main transmission and auxiliary transmission to ensure that the pedal shaft of the idle driving position will not rotate when power is provided by the main driver. At the same time, the tacit understanding requirement of double-driving is improved through the steering device and the transmission slide structure.

Benefits of technology

It realizes that when driving in two people, the idle driving seat will not affect tourists' entertainment and sightseeing, improves driving tacit understanding and sense of accomplishment, and effectively improves the safety of ship steering and speed control.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a pedal pleasure boat capable of being driven by two persons, particularly relates to the technical field of entertainment and sightseeing boats, and solves the problems that in the prior art, most of the two-person pedal boats are of simple driving structures, and when one person provides power or a downstream boat does not need to provide power, the driving force is poor. The pedal shaft at the position where the tourist is located can rotate along with the rotation of the propeller if both feet are not put on the pedal plate, so that the tourist is affected when appreciating the scenery along the way and having a rest. According to the technical scheme, the system is divided into a main driving position and an auxiliary driving position, the system can be automatically switched into a double-person driving mode without manual operation, and the main driving position has the higher control right for a ship than the auxiliary driving position; according to the invention, the requirement for tacit consciousness during double-person driving is improved, and a sense of achievement of mutual cooperation at a higher level is provided for tourists.
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Description

Technical Field

[0001] The invention relates to the technical field of recreational sightseeing ships, and in particular to a pedal boat that can be driven by two persons. Background Art

[0002] Pedal boats are a kind of consumer product for water entertainment. They are powered by the pedals of tourists. They integrate sports, entertainment, leisure and other functions to meet the needs of individuals and families to enjoy life. Pedal boats are mostly used as business projects in parks and tourist attractions for people to consume. Double pedal boats are more suitable for parents and children or couples.

[0003] The current two-person pedal boats are mostly simple drive structures. When one person provides power or no power is needed when sailing downstream, the pedal shaft of the idle tourist's position will also rotate with the rotation of the propeller if his feet are not on the pedals, which will affect the tourists when they appreciate the scenery along the way and take a rest. In addition, the tourists have different boat driving experience. When two people drive, it is inevitable that one party will blindly pursue speed and ignore driving safety or drive into narrow waterways. In addition, when the rudder changes direction, due to the resistance of water, the boat driver must use a large force on the steering wheel when changing direction. The existing two-person driven cruise ships have low requirements for the tacit understanding of the two people. There will be a situation where the party with a slow pedaling speed is carried away by the party with a fast speed, which cannot provide tourists with a higher level of sense of accomplishment of mutual cooperation, and the safety of the existing two-person driven pedal cruise ships in the face of certain emergencies still needs to be improved. Summary of the invention

[0004] Therefore, the present invention solves the technical problem that in the prior art, most two-person pedal boats have a simple driving structure. When one person provides power or the boat goes downstream without power, the pedal shaft at the tourist's position will rotate with the rotation of the propeller if the tourists' feet are not placed on the pedals, which affects the tourists' appreciation of the scenery along the way and their rest. The present invention provides a two-person driven pedal boat. When the main driving seat provides power or the boat goes downstream without power, the pedal shaft at the idle driving seat will not rotate, thereby preventing the tourists' mood for entertainment and sightseeing from being affected.

[0005] The present invention provides a pedal boat that can be driven by two persons, comprising a hull, wherein a steering device, a main transmission device and an auxiliary transmission device are arranged in the hull;

[0006] The steering device is used to control the steering of the hull; the main transmission device is used for driving the hull by one person; and the auxiliary transmission device is used to cooperate with the main transmission device to realize double-person driving of the hull.

[0007] Furthermore, the steering device comprises a sleeve with a tooth groove on the hull; a rudder stock is arranged in the sleeve; the rudder stock is provided with two first limit sliders symmetrical along the center of the circle; the upper surfaces of the two first limit sliders are provided with trapezoidal grooves symmetrical to each other along the center of the circle of the rudder stock; the two first limit sliders are provided with a limit protrusion at one end away from the center of the circle of the rudder stock, and a first spring is provided at one end close to the center of the circle of the rudder stock. The limit protrusion can be inserted into the tooth groove.

[0008] Furthermore, a baffle plate for mounting the first limit slider is provided on the upper surface of the rudder bar; the first limit slider is slidably connected to the baffle plate; the limit protrusion is tooth-shaped, and the limit protrusions on the two first limit sliders face oppositely. The baffle plates are provided on the left and right sides of the first limit slider and fit the first limit slider so that the first limit slider can slide in the baffle plates.

[0009] Furthermore, the steering device also includes a steering wheel, on which two first cylindrical protrusions are arranged; the two first cylindrical protrusions are respectively located in the trapezoidal grooves on the two limit sliding blocks.

[0010] Furthermore, the main transmission device includes a limit rod connected to the hull for rotation; main pedal rods are provided at both ends of the limit rod; a limit ring is provided on the limit rod; a limit groove is provided in the limit ring; the limit rod passes through the limit ring; a limit disk is provided on the limit rod; the limit disk is in the limit ring, and a second limit slider symmetrical along the axis of the limit rod is provided on the limit disk; the second limit slider is slidably connected to the limit disk; a trapezoidal groove is provided on the second limit slider; a toothed protrusion inserted into the limit groove is provided at the end of the second limit slider away from the center of the limit rod, and a second spring is provided at the end close to the center of the limit rod. The trapezoidal grooves on the two second limit sliders are symmetrical along the center of the limit rod, and the sliding connection between the second limit slider and the limit disk can also adopt the sliding connection between the first limit slider and the baffle.

[0011] Furthermore, the limiting ring is connected to the hull; a pedal protrusion is provided on the main pedal rod; the pedal protrusion is inserted into the trapezoidal groove on the second limiting block; the limiting rod is connected to the paddle wheel shaft chain; and the paddle wheel shaft is rotatably connected to the hull.

[0012] Further, the auxiliary transmission device includes a rotating ring, which is sleeved on the paddle wheel shaft; the rotating ring is provided with a plurality of grooves for placing the transmission slider; the two ends of the transmission slider are provided with a first transmission protrusion and a second transmission protrusion in opposite directions; the upper and lower sides of the middle area of ​​the transmission slider are provided with a first triangular groove and a second triangular groove in opposite directions; the outer sides of the plurality of transmission sliders are sleeved with sprockets; the outer ring of the sprocket is chain-connected with the auxiliary foot pedal, and the inner ring is provided with a second cylindrical protrusion, and the second cylindrical protrusion is located in the gap between different transmission sliders. A partition can be provided in the hull, the main foot pedal and the auxiliary foot pedal are provided above the partition through a shaft sleeve, and the remaining components of the main transmission device and the auxiliary transmission device are provided below the partition, and the chain can pass through the partition when the limit rod on the main foot pedal and the paddle wheel shaft and the outer ring of the sprocket and the auxiliary foot pedal adopt the existing chain gear connection method.

[0013] Furthermore, the paddle wheel shaft is provided with two blocks located on both sides of the transmission slider, and a third spring sleeved on the paddle wheel shaft is provided on the inner side of the block, and drum wheel one and drum wheel two are respectively provided on the side away from the two third springs of the block, and a first drum wheel protrusion and a second drum wheel protrusion corresponding to the first transmission protrusion and the second transmission protrusion are provided on one end of the drum wheel facing the block.

[0014] Furthermore, the resistance to the rotation of the rotating ring is greater than the resistance to the transmission slider sliding in the groove of the rotating ring.

[0015] Furthermore, paddle wheels are arranged at both ends of the paddle wheel shaft.

[0016] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0017] 1. The pedal boat driven by two persons provided by the present invention is divided into two driving positions, a main driving position and a co-driving position. The pedal boat can be switched to a two-person driving mode automatically without manual operation, and the main driving position has a higher control over the boat than the co-driving position. Only when the tourist in the main driving position steps on the pedal to release the locking state, the tourist in the co-driving position can provide power to the boat, which improves the requirement for tacit understanding when driving by two persons and provides tourists with a higher level of sense of accomplishment of mutual cooperation.

[0018] 2. The present invention provides a pedal boat that can be driven by two people. When the main driving position provides power or the boat does not need to provide power when sailing downstream, the pedal shaft where the idle driving position is located will not rotate, so as to prevent the mood of tourists for entertainment and sightseeing from being affected.

[0019] 3. The pedal boat that can be driven by two persons provided by the present invention does not need to keep hands on the steering wheel to provide force to maintain the course when controlling the steering of the boat; at the same time, the rotation speed of the paddle wheel can be effectively limited to prevent tourists from getting into danger due to the excessive speed of the boat. At the same time, the present invention also has the ability to quickly change the forward or backward state of the boat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A partial enlarged view of middle A;

[0023] Figure 3 This is a structural diagram of the transmission slider of the present invention;

[0024] Figure 4 The sprocket structure diagram of the present invention;

[0025] Figure 5 This is a structural diagram of the steering wheel of the present invention;

[0026] Figure 6 This is a structural diagram of the main transmission device of the present invention;

[0027] Figure 7 For the present invention Figure 6 Middle B view;

[0028] Figure 8 The overall structural diagram of the hull of the present invention;

[0029] Fig. 9 This is a structural diagram of the auxiliary pedal rod of the present invention;

[0030] Fig.10 is a structural diagram of the rotating ring of the present invention;

[0031] Description of reference numerals:

[0032] 1. Hull; 1a. Bushing; 2. Rudder stock; 3. First spring; 4. First limit slider; 5. Paddle wheel shaft; 5a. Paddle wheel; 6. Stopper; 7. Third spring; 8. Drum wheel one; 8a. First drum wheel protrusion; 9. Sprocket; 9a. Second cylindrical protrusion; 10. Transmission slider; 10a. First transmission protrusion; 10b. Second transmission protrusion; 10c. First triangular groove; 10d. Second triangular groove; 11. Drum wheel two; 11a. Second drum wheel protrusion; 12. Steering wheel; 12a. First cylindrical protrusion; 13. Main foot lever; 13a. Foot protrusion; 14. Limit rod; 15. Second limit slider; 16. Limit ring; 16a. Limit groove; 17. Second spring; 18. Limit plate; 19. Second foot lever; 20. Rotating ring. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] This embodiment provides a pedal boat that can be driven by two people, such as Figures 1 to 10 It mainly comprises a hull 1, in which a steering device, a main transmission device and an auxiliary transmission device are arranged;

[0035] The steering device is used to control the steering of the hull 1; the main transmission device is used to drive the hull 1 by one person; and the auxiliary transmission device is used to cooperate with the main transmission device to realize double-person driving of the hull 1. Fig.10 Among them, 1b is the shaft seat for placing the main transmission device, 1d is the shaft seat for placing the auxiliary foot pedal, and 1c is the shaft seat for placing the auxiliary transmission device.

[0036] In this embodiment, the steering device includes a shaft sleeve 1a with a tooth groove on the hull 1; a rudder bar 2 is arranged in the shaft sleeve 1a; two first limit sliders 4 symmetrical along the center of the circle and with a first spring 3 are arranged on the rudder bar 2; the upper surfaces of the two first limit sliders 4 are provided with trapezoidal grooves symmetrical to each other along the center of the circle of the rudder bar 2; the two first limit sliders 4 are provided with a limiting protrusion at one end away from the center of the circle of the rudder bar 2, and a first spring is arranged at one end close to the center of the circle of the rudder bar 2.

[0037] The upper surface of the rudder bar 2 is provided with a baffle plate for mounting the first limit slider 4; the first limit slider 4 is slidably connected to the baffle plate; the limit protrusion is tooth-shaped, and the limit protrusions on the two first limit sliders 4 face opposite directions. The steering device also includes a steering wheel 12, and the steering wheel 12 is provided with two first cylindrical protrusions 12a; the two first cylindrical protrusions 12a are respectively located in the trapezoidal grooves on the two limit sliders.

[0038] In the initial state, the first limiting slider 4 in the steering device keeps the limiting protrusion on the first limiting slider 4 in the tooth groove on the limiting ring 16 under the action of the first spring 3. When the ship needs to turn, the driver only needs to rotate the steering wheel 12 by a certain angle, whether clockwise or counterclockwise. At this time, one of the first cylindrical protrusions 12a on the steering wheel 12 moves from the longer bottom side of the trapezoidal groove to the shorter bottom side, which will push the first limiting slider 4 that hinders the rotation of the rudder bar 2 to move closer to the center of the rudder bar 2, so that the limiting protrusion on the first limiting slider 4 is disengaged from the tooth groove, thereby pushing the rudder bar 2 to rotate. After rotating to a certain angle, it only needs to stop rotating. The first limiting slider 4 will reinsert the limiting protrusion on it into the tooth groove under the action of the first spring 3, limit the rudder bar 2, and keep the steering angle of the rudder bar 2. When the turn is completed, it is only necessary to reset the steering wheel 12 according to the same operation as above; therefore, when controlling the steering of the ship, it is not necessary to keep your hands on the steering wheel 12 to provide a force to maintain the heading.

[0039] In this embodiment, the main transmission device includes a limit rod 14 rotatably connected to the hull 1; main foot pedals 13 are arranged at both ends of the limit rod 14; a limit ring 16 is arranged on the limit rod 14; a limit groove 16a is arranged in the limit ring 16; the outer ring of the limit ring 16 is fixedly connected to the hull 1; the limit rod 14 passes through the limit ring 16; a limit disk 18 is arranged on the limit rod 14; the limit disk 18 is in the limit ring 16, and a second limit slider 15 symmetrical along the center of the limit rod 14 is arranged on the limit disk 18; the second limit slider 15 is slidably connected to the limit disk 18; a trapezoidal groove is arranged on the second limit slider 15; the second limit slider 15 is provided with a toothed protrusion inserted into the limit groove 16a at one end away from the center of the limit rod 14, and a second spring 17 is arranged at one end close to the center of the limit rod 14. The limiting ring 16 is connected to the hull 1; the main pedal rod 13 is provided with a pedal protrusion 13a; the pedal protrusion 13a is inserted into the trapezoidal groove on the second limiting block; the limiting rod 14 is chain-connected to the paddle wheel shaft 5; the paddle wheel shaft 5 is rotationally connected to the hull 1.

[0040] In the initial state, the second limit slider 15 in the main transmission device keeps the toothed protrusion on the second limit slider 15 in the limit groove 16a on the limit ring 16 under the action of the second spring 17, so that the main pedal rod 13 will not rotate in the moored state. When the tourist in the main driving seat starts to drive the boat forward, he steps on the main pedal rod 13, which drives the limit plate 18 to rotate through the limit rod 14. At the same time, one of the pedal protrusions 13a moves from the longer bottom edge of the trapezoidal groove to the shorter bottom edge, which will drive the second limit block that hinders the rotation of the limit plate 18 to move toward the center of the limit rod 14, so that its toothed protrusion is separated from the limit groove 16a, thereby driving the limit rod 14 to rotate. The chain teeth on the limit rod 14 drive the paddle wheel shaft 5 to rotate through the chain drive, thereby pushing the boat forward. During the process of the boat moving forward, if the tourist feels that the speed is too fast, he only needs to slow down the pedal speed or stop pedaling. At this time, the paddle wheel shaft 5 will drive the limit rod under the action of inertia. 14 rotates forward a certain angle, the second limit slider 15 will rotate a certain angle more than the main foot pedal 13 under the action of the limit rod 14, the foot pedal protrusion 13a moves to the longer side of the trapezoidal groove, and the foot pedal protrusion 13a will no longer limit the second limit slider 15 under the action of the second spring 17. When the toothed protrusion on the second limit slider 15 is inserted into the limit groove 16a on the limit ring 16, the paddle wheel shaft 5 will not be able to continue to rotate to achieve the purpose of deceleration. If it is necessary to quickly reduce the speed in an emergency, just step on the main foot pedal 13 in the opposite direction after slowing down the pedal, and the paddle wheel shaft 5 can be rotated in the opposite direction by the same principle as above to achieve the purpose of rapid deceleration. The rotation speed of the paddle wheel can be effectively limited to prevent tourists from being in danger due to the excessive speed of the ship. At the same time, the present invention also has the ability to quickly change the forward or backward state of the ship.

[0041] In this embodiment, the auxiliary transmission device includes a rotating ring 20, which is sleeved on the paddle wheel shaft 5; the rotating ring 20 is provided with a plurality of grooves for placing the transmission slider 10; the transmission slider 10 is provided with a first transmission protrusion 10a and a second transmission protrusion 10b in opposite directions at both ends; Figure 3 As shown, the transmission slider 10 has a first triangular groove 10c and a second triangular groove 10d with opposite directions on the upper and lower sides of the middle area. Figure 2The first triangular groove 10c and the second triangular groove 10d are blocked by the sprocket 9; the sprockets 9 are sleeved on the outer sides of the plurality of transmission sliders 10; the outer ring of the sprocket 9 is chain-connected with the auxiliary pedal rod 19, and the inner ring is provided with a second cylindrical protrusion 9a, and the second cylindrical protrusion 9a is located in the gap between different transmission sliders 10. The paddle wheel shaft 5 is provided with two stoppers 6 located on both sides of the transmission slider 10, and the inner side of the stoppers 6 is provided with a third spring 7 sleeved on the paddle wheel shaft 5, and the two third springs 7 are provided with a drum wheel 1 8 and a drum wheel 2 11 respectively on the side away from the stoppers 6, and the drum wheel is provided with a first drum wheel protrusion 8a and a second drum wheel protrusion 11a corresponding to the first transmission protrusion 10a and the second transmission protrusion 10b at one end thereof facing the stoppers 6.

[0042] In the initial state, the first transmission protrusion 10a and the second transmission protrusion 10b on the transmission slider 10 in the auxiliary transmission device are separated from the first drum protrusion 8a and the second drum protrusion 11a on the drum one 8 and the drum two 11, so that the auxiliary pedal rod 19 will not rotate. When the tourists adopt the two-person driving mode to move forward, the auxiliary driver's seat must unlock the paddle wheel shaft 5 on the basis of the main driver's seat, and the auxiliary driver's seat can provide driving force. When the two-person driving cruise ship moves forward, the auxiliary driver's seat first steps on the auxiliary pedal rod 19 clockwise or counterclockwise, and the auxiliary pedal rod 19 drives the sprocket 9 to rotate under the action of the chain drive. The second cylindrical protrusion 9a on the sprocket 9 is inserted into the first triangular groove 10c or the second triangular groove 10d on the transmission slider 10 as the sprocket 9 rotates, which will squeeze and push the transmission slider 10 to move left or right, and the transmission slider 10 will be inserted into the groove between the protrusions of drum one 8 and drum two 11, and then cooperate with drum one 8 or drum two 11 to move forward. The force of the auxiliary pedal rod 19 is transmitted to the paddle wheel shaft 5, and the main driving position tourist steps on the main pedal rod 13 to release the locked state of the paddle wheel shaft 5. At this time, the control of the cruise ship forward requires mutual cooperation between the two tourists. If the rotation provided by the co-pilot position exceeds the main driving position, the paddle wheel shaft 5 will drive the limit rod 14 in the main rotating device to rotate a certain angle, and the second limit slider 15 will rotate a certain angle more than the main pedal rod 13 under the action of the limit rod 14. At this time, the pedal protrusion 13a will no longer limit the second limit slider 15, and its trend of recovery under the action of the second spring 17, the paddle wheel shaft 5 will not be able to continue to rotate. If the speed provided by the main driving position is greater than the speed provided by the co-pilot position, the transmission slider 10 will exit the matching state under the action of the protrusion on the drum wheel 1 8 or the drum wheel 2 11, so that it returns to the single-person driving mode. This move improves the requirements for the tacit understanding of the two-person driving cruise ship, and can provide tourists with a sense of accomplishment of completing mutual cooperation at a higher level. The two-person driving cruise ship is the same as the above-mentioned operation when retreating.

[0043] In this embodiment, the resistance to the rotation of the rotating ring 20 is greater than the resistance to the transmission slider 10 sliding in the groove of the rotating ring 20; for example, a friction ring is added, the size of the gap is controlled, etc.; thus, when the sprocket 9 rotates, the transmission slider 10 will be moved first and then the rotating ring 20 will start to rotate. Paddle wheels 5a are provided at both ends of the paddle wheel shaft 5, thereby driving the hull 1.

[0044] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pedal boat that can be driven by two persons, characterized in that: It comprises a hull (1), wherein a steering device, a main transmission device and an auxiliary transmission device are arranged in the hull (1); The steering device is used to control the steering of the hull (1); the main transmission device is used to drive the hull (1) by one person; and the auxiliary transmission device is used to cooperate with the main transmission device to realize double-person driving of the hull (1).

2. The pedal boat capable of driving two persons according to claim 1, characterized in that: The steering device comprises a shaft sleeve (1a) with tooth grooves on a hull (1); a rudder stock (2) is arranged in the shaft sleeve (1a); the rudder stock (2) is provided with two first limit sliders (4) symmetrical along the horizontal diameter direction and provided with first springs (3); the upper surfaces of the two first limit sliders (4) are provided with trapezoidal grooves symmetrical to each other along the horizontal diameter direction of the rudder stock (2); and the two first limit sliders (4) are provided with limit protrusions at one end away from the center of the rudder stock (2).

3. The pedal boat capable of driving two persons according to claim 2, characterized in that: The upper surface of the rudder bar (2) is provided with a baffle plate for mounting a first limiting slider (4); the first limiting slider (4) is slidably connected to the baffle plate; the limiting protrusion is tooth-shaped, and the limiting protrusions on the two first limiting sliders (4) face opposite directions.

4. The pedal boat capable of driving two persons according to claim 3, characterized in that: The steering device also includes a steering wheel (12), on which two first cylindrical protrusions (12a) are arranged; the two first cylindrical protrusions (12a) are respectively located in trapezoidal grooves on the two limit sliding blocks.

5. The pedal boat capable of driving two persons according to claim 4, characterized in that: The main transmission device comprises a limit rod (14) rotatably connected to the hull (1); main pedal rods (13) are arranged at both ends of the limit rod (14); a limit ring (16) is arranged on the limit rod (14); a limit groove (16a) is arranged in the limit ring (16); the limit rod (14) passes through the limit ring (16); a limit plate (18) is arranged on the limit rod (14); the limit plate (18) is located in the limit ring (16) The limiting plate (18) is provided with a second limiting slider (15) symmetrical along the axis of the limiting rod (14); the second limiting slider (15) is slidably connected to the limiting plate (18); a trapezoidal groove is provided on the second limiting slider (15); the second limiting slider (15) is provided with a toothed protrusion inserted into the limiting groove (16a) at one end away from the center of the limiting rod (14), and a second spring (17) is provided at one end close to the center of the limiting rod (14).

6. The pedal boat capable of driving two persons according to claim 5, characterized in that: The limiting ring (16) is connected to the hull (1); a pedal protrusion (13a) is provided on the main pedal rod (13); the pedal protrusion (13a) is inserted into a trapezoidal groove on the second limiting block; the limiting rod (14) is chain-connected to the paddle wheel shaft (5); and the paddle wheel shaft (5) is rotatably connected to the hull (1).

7. The pedal boat capable of driving two persons according to claim 6, characterized in that: The auxiliary transmission device comprises a rotating ring (20), wherein the rotating ring (20) is sleeved on the paddle wheel shaft (5); the rotating ring (20) is provided with a plurality of grooves for placing the transmission sliders (10); the two ends of the transmission sliders (10) are provided with a first transmission protrusion (10a) and a second transmission protrusion (10b) in opposite directions; the middle area of ​​the transmission slider (10) is provided with a first triangular groove (10c) and a second triangular groove (10d) in opposite directions on the upper and lower sides; the outer sides of the plurality of transmission sliders (10) are sleeved with sprockets (9); the outer ring of the sprocket (9) is chain-connected with the auxiliary pedal rod (19), and the inner ring is provided with a second cylindrical protrusion (9a), and the second cylindrical protrusion (9a) is located in the gap between different transmission sliders (10).

8. The pedal boat capable of driving two persons according to claim 7, characterized in that: The paddle wheel shaft (5) is provided with two blocks (6) located on both sides of the transmission slider (10); a third spring (7) sleeved on the paddle wheel shaft (5) is provided inside the block (6); a drum wheel one (8) and a drum wheel two (11) are provided on the side away from the block (6); and a first drum wheel protrusion (8a) and a second drum wheel protrusion (11a) are provided on the ends of the drum wheel one (8) and the drum wheel two (11) facing the block (6), respectively corresponding to the first transmission protrusion (10a) and the second transmission protrusion (10b).

9. The pedal boat capable of driving two persons according to claim 8, characterized in that: The resistance to the rotation of the rotating ring (20) is greater than the resistance to the transmission slider (10) sliding in the groove inside the rotating ring (20).

10. The pedal boat capable of driving two persons according to claim 6, characterized in that: Paddle wheels (5a) are arranged at both ends of the paddle wheel shaft (5).