A sprinting single scull device

Abstract

The application discloses a sprinting type single-person racing boat device and belongs to the technical field of racing boats, which comprises a boat body, a grab disc part arranged at the front part of the boat body and an adjusting part arranged at the tail part of the boat body; the grab disc part comprises a telescopic disc slidingly connected to the lower part of the boat body, a plurality of grab plates rotatably connected to the lower part of the telescopic disc and a supporting disc slidingly connected to the telescopic disc; a seat is longitudinally slidingly connected to the boat body; a rudder stabilizer is rotatably connected to the tail part of the boat body; the adjusting part comprises a hand rotatably connected to the upper end of the boat body; and the hand rotation can drive the rudder stabilizer to rotate. When the application rushes onto the beach, the athlete can stably stay on the beach after leaving the boat body; the athlete can easily and labor-savingly turn around without the assistance of other personnel; after the athlete gets on the boat body, the application can simulate the assistance process of the personnel, reduces the number of participating personnel; and the application can be used for daily training and has no difference from normal racing boats and does not need the assistance of other working personnel.

Description

Technical Field

[0001] This invention belongs to the field of rowing technology, and more specifically, relates to a sprint-type single-person rowing device. Background Technology

[0002] Coastal rowing beach sprint race is a competition with the start and finish line on the beach. Each of the two participating teams sends one member to start from the starting point, run to the side of the boat on the water, quickly board the boat, start rowing according to the prescribed route, and then return to the beach to run aground. After that, they disembark and rush to the finish line to capture the flag or hit the stop button to end the race. The winning team advances to the next round.

[0003] Chinese patent document CN205287533U discloses a simulated rowing device that can be used for rowing training and fitness. It includes a hull, ratchet, support rod, and rocker arm. A ratchet is provided on each side of the hull. The two ratchets are connected to the hull through the support rod, and the main shaft of each ratchet is connected to a rocker arm. The other end of the rocker arm extends to the top of the hull.

[0004] The above scheme can only simulate training for athletes while they are on the rowing boat. However, coastal rowing includes both beach and water races, and the above scheme does not include the beach race portion. Therefore, the above scheme cannot meet the actual needs to a certain extent. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sprint-type single-person rowing device that enables a single person and a single boat to conduct simulated training for races on water and land without the assistance of other personnel.

[0006] The present invention provides a sprint-type single-person racing boat device, comprising a hull, a gripping disc portion disposed at the front of the hull, and an adjustment portion disposed at the stern of the hull; the gripping disc portion includes a telescopic disc longitudinally slidably connected to the lower part of the hull, a plurality of gripping plates horizontally disposed on a rotating shaft rotatably connected below the telescopic disc and capable of being inserted into the sand, and a support disc longitudinally slidably connected to the telescopic disc and capable of abutting against the sand.

[0007] A seat is longitudinally slidably connected to the hull and is driven by the telescopic disc and the gripper plate; a rudder with a horizontally arranged rotating shaft is rotatably connected to the lower stern of the hull; the adjustment part includes a handle rotatably connected to the upper end of the hull and driven by the support disc; the rotation of the handle can drive the rudder to rotate.

[0008] As a further improvement of the present invention, a sliding base is slidably connected to the hull along its length; a pressure tube is formed at the upper end of the sliding base; a pressure plug is formed at the lower end of the seat and is slidably and sealingly connected to the pressure tube; a support spring is provided between the sliding base and the seat to keep them apart.

[0009] A sealing pipe communicating with the pressure pipe is formed inside the hull; a sealing plug coaxially arranged and slidably connected to the sealing pipe is formed on the telescopic disc.

[0010] As a further improvement of the present invention, the gripping disc includes a linkage column slidably connected to the telescopic disc and drivingly connected to each of the gripping plates, and a linkage pipe fixedly connected to the telescopic disc and communicating with the sealing pipe; a linkage plug is formed on the linkage column and is sealingly and slidably connected to the linkage pipe.

[0011] The gripper plate is formed with an eccentrically arranged groove; the linkage column is formed with a plurality of drive columns that are slidably connected to the eccentric groove and can drive the eccentric groove to rotate.

[0012] As a further improvement of the present invention, a non-cylinder is formed at the center of the upper end of the telescopic disc; a non-circular hole is formed in the hull body and is slidably connected to the non-cylinder; the non-circular hole has the same cross-sectional shape as the non-cylinder.

[0013] As a further improvement of the present invention, the telescopic disc is formed with a coaxially arranged annular cavity; the support disc is formed with an annular plug that is slidably and sealingly connected to the annular cavity; the adjustment part includes a transmission pipe that is fixedly connected to the hull and communicates with the annular cavity, and a transmission plug that is slidably and sealingly connected to the transmission pipe and is slidably connected to the handle.

[0014] As a further improvement of the present invention, the outer periphery of the support plate is formed with multiple longitudinally arranged anti-rotation grooves; the hull body is formed with multiple longitudinally arranged anti-rotation columns that can be slidably connected with the anti-rotation grooves; when the anti-rotation column is located in the anti-rotation groove, the length direction of the grab plate is perpendicular to the length direction of the hull.

[0015] As a further improvement of the present invention, the adjusting part includes a worm gear rotatably connected to the hull and connected to the rudder drive, a worm gear rotatably connected to the hull and connected to the worm gear drive, and a ratchet rack fixedly connected to the transmission plug and capable of drively connecting to the worm gear.

[0016] As a further improvement of the present invention, a power-accumulating ratchet is formed on the worm gear; a buoyancy block capable of floating on the water surface is longitudinally slidably connected to the lower end of the hull; a stop pawl capable of restricting the reverse rotation of the power-accumulating ratchet is formed on the buoyancy block; the sliding of the rack and pinion can only drive the worm gear to rotate in the forward direction; a power-accumulating torsion spring is provided between the worm gear and the hull.

[0017] As a further improvement of the present invention, the upper end of the transmission plug is formed with a horizontally arranged adjusting rod; one end of the handle is rotatably connected to the hull and the rotating shaft is horizontally arranged; the middle part of the handle is formed with a lever groove that is slidably connected to the adjusting rod for driving the adjusting rod to slide longitudinally.

[0018] As a further improvement of the present invention, a propeller for driving the hull to navigate on the water surface is longitudinally slidably connected to the lower front part of the hull; an electric push rod for driving the propeller to slide longitudinally is fixedly connected inside the hull.

[0019] Compared to existing technologies, the advantages of this invention are as follows: By incorporating a sealing pipe, when the hydraulic oil in the sealing pipe decreases, the telescopic disc slides downwards, causing the grab plate to rotate and come into contact with the sand. The downward sliding of the telescopic disc increases the contact force between the grab plate and the sand, reducing the buoyancy at the front of the boat, thus allowing the grab plate to be more stably fixed on the sand. Furthermore, the flow of hydraulic oil automatically switches after the athlete leaves their seat, without adding new motion mechanisms or operating steps, reducing the weight of the boat and making it more suitable for competition boats.

[0020] This invention features a handle that, when pulled upwards, causes the support plate to slide downwards until it contacts the sand. This prevents the grab plate and telescopic disc from contacting the sand, allowing the boat to easily rotate and adjust its position. This reduces the difficulty of operation for athletes and saves more effort. Simultaneously, sliding the handle upwards also retracts the rudder into the boat, preventing the protruding rudder from inserting into the sand and protecting the boat's structure. No new operating steps are added, making boat turning simple and effortless.

[0021] This invention features a stabilizer. When the hull is on the sea surface, the buoyancy block is positioned at its upper limit under the buoyancy of the water, while the stabilizer is in the sea surface. Furthermore, the worm gear and worm wheel are self-locked, allowing the stabilizer to stably guide the hull. When the hull is being moved on the beach, pulling the handle causes the stabilizer to rotate into the hull, the buoyancy block leaves the sea surface, and the stop pawl restricts the rotation of the stabilizer, thus preventing the stabilizer from inserting into the sand when the hull is on the beach and protecting the hull structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2This is an exploded structural diagram of the present invention;

[0024] Figure 3 This is a cross-sectional structural diagram of the hull of the present invention;

[0025] Figure 4 This is a schematic diagram of the seat structure of the present invention.

[0026] Figure 5 This is an exploded structural diagram of the gripping disc part of the present invention;

[0027] Figure 6 This is an exploded structural diagram of the adjustment part of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the sea surface training of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the present invention for beach stranding;

[0030] Figure 9 This is a schematic diagram of the structure of the hull of the present invention.

[0031] Explanation of the labels in the diagram: 10. Hull; 101. Sealing pipe; 102. Interface A; 103. Non-circular hole; 104. Anti-rotation column; 105. Reception cavity; 11. Thruster; 12. Electric push rod; 2. Gripping plate; 21. Telescopic plate; 211. Annular cavity; 212. Sealing plug; 213. First connecting pipe; 214. Second connecting pipe; 215. Non-cylindrical; 216. Transmission interface; 22. Gripping plate; 221. Eccentric groove; 23. Linkage column; 231. Drive column; 232. Linkage plug; 24. Linkage pipe; 25. Support plate; 251. Anti-rotation groove ; 252, Annular plug; 31, Sliding base; 311, Pressure tube; 312, Interface B; 32, Seat; 321, Pressure plug; 33, Support spring; 4, Adjustment section; 41, Steerable rudder; 411, Steerable rudder gear; 42, Worm gear; 421, Worm gear; 43, Worm; 431, Power-saving ratchet; 432, Speed-changing ratchet; 433, Gearbox; 44, Power-saving torsion spring; 45, Transmission tube; 46, Adjustment rod; 461, Transmission plug; 462, Racket rack storage; 47, Handle; 471, Lever groove; 48, Buoyancy block; 481, Stop pawl. Detailed Implementation

[0032] Specific Implementation Example 1: Please refer to Figure 1-9A sprint-type single-person racing boat device includes a hull 10, a gripping disc 2 located at the front of the hull 10, and an adjustment part 4 located at the stern of the hull 10. The gripping disc 2 includes a telescopic disc 21 longitudinally slidably connected to the lower part of the hull 10, multiple gripping plates 22 horizontally arranged and capable of being inserted into the sand by rotating shafts rotatably connected below the telescopic disc 21, and a support disc 25 located on the outer periphery of the telescopic disc 21 and capable of abutting against the sand. The lower front end of the hull 10 is formed with a storage cavity 105 for accommodating the telescopic disc 21.

[0033] A seat 32 is longitudinally slidably connected to the hull 10 and is pulsatorically connected to the telescopic disc 21 and the gripper 22; a rudder 41 with a horizontally arranged rotating shaft is rotatably connected to the lower stern of the hull 10; the adjustment part 4 includes a handle 47 rotatably connected to the upper end of the hull 10 and pulsatorically connected to the support disc 25; the rotation of the handle 47 can drive the rudder 41 to rotate.

[0034] A sliding base 31 is slidably connected inside the hull 10 along its length; a plurality of pressure tubes 311 are formed on the upper end of the sliding base 31; a plurality of pressure plugs 321 are formed on the lower end of the seat 32, which are respectively sealed and slidably connected to the corresponding pressure tubes 311; a plurality of support springs 33 are provided between the sliding base 31 and the seat 32 to keep them away from each other.

[0035] The hull 10 has a sealing pipe 101 formed inside, which communicates with the pressure pipe 311; the telescopic disc 21 has a sealing plug 212 formed on it, which is coaxially arranged and slidably connected to the sealing pipe 101; a sliding column is formed at the center of the upper end of the telescopic disc 21; the sealing plug 212 is formed on the outer periphery of the sliding column 212; an interface A102 is formed at the lower end of the inner wall of the sealing pipe 101; an interface B312 is formed on the sliding base 31, which communicates with the pressure pipe 311; the interface A102 and the interface B312 are connected by a first flexible hose.

[0036] The gripping disc 2 includes a linkage column 23 that is slidably connected to the telescopic disc 21 in the horizontal direction and is drivenly connected to each of the gripping plates 22, and a linkage pipe 24 that is fixedly connected to the telescopic disc 21 and communicates with the sealing pipe 101; the linkage column 23 is formed with a linkage plug 232 that is slidably and sealingly connected to the linkage pipe 24.

[0037] The sliding column has a second connecting pipe 214 formed inside; the upper opening of the second connecting pipe 214 is located at the lower end of the sealing plug 212, and thus communicates with the sealing pipe 101; the lower opening of the second connecting pipe 214 communicates with the linkage pipe 24.

[0038] The gripper plate 22 is formed with an eccentrically arranged eccentric groove 221; the linkage column 23 is formed with a plurality of drive columns 231 that are slidably connected to the eccentric groove 221 and can drive the eccentric groove 221 to rotate.

[0039] A non-cylinder 215 is formed at the center of the upper end of the telescopic disc 21; the non-cylinder 215 is formed at the upper end of the sliding column; a non-circular hole 103 is formed inside the hull 10 and is slidably connected to the non-cylinder 215; the non-circular hole 103 has the same cross-sectional shape as the non-cylinder 215.

[0040] The telescopic disc 21 has a coaxially arranged annular cavity 211 formed on it; the support disc 25 has an annular plug 252 formed on it that is slidably connected to the annular cavity 211; the adjustment part 4 includes a transmission pipe 45 fixedly connected to the hull 10 and communicating with the annular cavity 211, and a transmission plug 461 slidably connected to the transmission pipe 45 and pulsively connected to the handle 47.

[0041] The telescopic disc 21 has a transmission interface 216 formed inside, which communicates with the annular cavity 211; the sliding column has a first connecting pipe 213 with its lower end opening communicating with the transmission interface 216; the lower end of the transmission pipe 45 has a lower opening formed, which communicates with the upper end opening of the first connecting pipe 213; the lower opening and the upper end opening of the first connecting pipe 213 are connected through a second flexible hose.

[0042] The outer periphery of the support plate 25 is formed with multiple longitudinally arranged anti-rotation grooves 251; the hull 10 is formed with multiple longitudinally arranged anti-rotation columns 104 that can be slidably connected with the anti-rotation grooves 251; when the anti-rotation column 104 is located in the anti-rotation groove 251, the length direction of the grab plate 22 is perpendicular to the length direction of the hull 10.

[0043] When the support plate 25 is at its upper limit position relative to the telescopic plate 21, the anti-rotation post 104 is slidably connected to the anti-rotation groove 251, and the hull 10 cannot rotate relative to the support plate 25; when the support plate 25 is at its lower limit position relative to the telescopic plate 21, the anti-rotation post 104 is not in contact with the anti-rotation groove 251, and the hull 10 can rotate relative to the support plate 25.

[0044] The adjustment unit 4 includes a worm gear 42 rotatably connected to the hull 10 and driven by the rudder 41, a worm 43 rotatably connected to the hull 10 and driven by the worm gear 42, and a ratchet rack 462 fixedly connected to the transmission plug 461 and capable of being driven by the worm 43.

[0045] One end of the stabilizer 41 is connected to the hull 10 for transmission; a stabilizer gear 411 is formed on the stabilizer 41 and is coaxially arranged with its rotation axis; a worm gear 421 is formed on the worm gear 42 and is coaxially arranged and transmitted with the stabilizer gear 411; a gearbox 433 is provided at one end of the worm 43 near the rack 462; a variable speed ratchet 432 is provided on the gearbox 433 and can be unidirectionally transmitted with the rack 462; the variable speed ratchet 432 is transmitted with the worm 43 through the gearbox 433.

[0046] A coaxially arranged power-storing ratchet 431 is formed on the worm gear 43; a buoyancy block 48 capable of floating on the water surface is longitudinally slidably connected to the lower end of the hull 10; a stop pawl 481 capable of restricting the reverse rotation of the power-storing ratchet 431 is formed on the buoyancy block 48; the sliding of the rack 462 can only drive the worm gear 43 to rotate in the forward direction; a power-storing torsion spring 44 is provided between the worm gear 43 and the hull 10.

[0047] The upper end of the transmission plug 461 is formed with a horizontally arranged adjusting rod 46; one end of the handle 47 is rotatably connected to the hull 10 and the rotating shaft is horizontally arranged; the middle part of the handle 47 is formed with a lever groove 471 for driving the adjusting rod 46 to slide longitudinally, which is slidably connected to the adjusting rod 46.

[0048] The lever groove 471 is located between the pivot of the handle 47 and the holding position of the handle 47, thereby making the adjusting rod 46 easier to pull; a reset torsion spring for rotating the handle 47 downward is provided between the handle 47 and the hull 10.

[0049] The lower front end of the hull 10 is longitudinally slidably connected to a propeller 11 for driving the hull 10 to sail on the water surface; an electric push rod 12 for driving the propeller 11 to slide longitudinally is fixedly connected inside the hull 10.

[0050] A controller is installed inside the hull 10; the controller is electrically connected to the thruster 11 and the electric push rod 12.

[0051] Beach sprint single-person ocean rowing requires assistance from other staff during the competition. Before the athlete boards the boat or after the race, staff must hold the boat steady to prevent it from being swept away by the waves. In addition, the boat's position needs to be adjusted repeatedly during the training schedule, which is a waste of manpower.

[0052] During daily training with this racing boat, the athlete sits on seat 32 and propels the boat by rowing. Seat 32 is under pressure at its lower limit position, and the support spring 33 is compressed and stores energy. The gripper disc 2 is located within the storage cavity 105, similar to racing boats. After the boat comes to a stop on the beach, the athlete leaves seat 32 and the hull 10. Seat 32 slides upward to its upper limit position under the elastic force of the support spring 33. This sliding motion causes pressure plug 321 to slide away from pressure pipe 311, increasing the volume of pressure pipe 311. Hydraulic oil in sealing pipe 101 enters pressure pipe 311 sequentially through interface A102 and interface B312 under external pressure. Sealing plug 212 slides downward under pressure, causing telescopic disc 21 to slide downward until it touches the beach, thus supporting the front of the racing boat. During this process, the reduction in hydraulic oil in the sealing pipe 101 will cause hydraulic oil in the linkage pipe 24 to enter the sealing pipe 101 through the second connecting pipe 214, thereby causing the linkage plug 232 to slide into the linkage pipe 24. The sliding of the linkage plug 232 drives the drive column 231 to slide, which in turn drives the eccentric groove 221 to rotate, thereby causing the grab plate 22 to rotate. The grab plate 22 will rotate to an inclined state and press against the sand. With the reciprocating waves, the hull 10 will be driven to move. The hull 10 can only slide further towards the sand. As the hull 10 slides towards the sea surface, the grab plate 22 will insert into the sand. The part of the grab plate 22 extending from below the telescopic disc 21 will gradually extend into the sand, further stabilizing the position of the hull 10 and preventing the hull 10 from drifting away with the waves. As a result, the assistance of other personnel can be reduced, and daily training can be carried out by a single person and a single boat, reducing training costs.

[0053] During the next round of daily training, the athlete needs to turn the boat half a turn so that the front of the boat 10 faces the sea. The athlete holds the handle 47 at the stern of the boat 10 and lifts the boat 10 upwards. The handle 47 will also rotate upwards relative to the boat 10. The return torsion spring twists and stores power. The rotation of the handle 47 drives the lever groove 471 to rotate. The rotation of the lever groove 471 drives the adjusting rod 46 to slide upwards. The upward sliding of the lever 46 drives the transmission plug 461 to slide away from the transmission tube 45, increasing the volume of the transmission tube 45. Under the action of external pressure, the hydraulic oil in the annular cavity 211 enters the transmission tube 45 through the transmission interface 216 and the first connecting pipe 213. The annular plug 252 slides into the annular cavity 211, which in turn causes the support plate 25 to extend downwards to abut against the sand. The telescopic plate 21 and the grab plate 22 no longer abut against the sand, and the sand on the grab plate 22 will slide onto the sand. Subsequently, the athlete pulls on handle 47, causing the hull 10 to rotate half a turn, turning the front of the hull 10 towards the sea surface. The rotation of the hull 10 causes the non-circular hole 103 to rotate, which in turn causes the non-cylindrical plate 215 to rotate, thereby causing the telescopic plate 21 to rotate synchronously. There is no need to lift the entire hull 10; the turning process is simple and effortless. With the support plate 25 resting against the sand, the hull 10 will not change position due to the waves, saving the athlete's energy and allowing for better training.

[0054] During this process, after the hull 10 is lifted upwards, the buoyancy block 48 is no longer buoyed by the water and will slide downwards under the action of gravity. The downward sliding of the buoyancy block 48 will cause the stop pawl 481 to slide downwards. The stop pawl 481 will abut against the energy storage ratchet 431 and be connected in one direction, so that the energy storage ratchet 431 can only rotate in the forward direction. At the same time, the upward sliding of the adjusting rod 46 will also cause the storage ratchet 462 to slide upwards. The upward sliding of the storage ratchet 462 will contact the gear shift ratchet 432 and drive the gear shift ratchet 432 to rotate. The rotation of the gear shift ratchet 432 will drive the worm gear 43 to rotate in the forward direction through the gearbox 433, that is, the energy storage ratchet 431 will rotate in the forward direction. The forward rotation of the energy storage ratchet 431 will drive the energy storage torsion spring 44 to twist and store energy. The forward rotation of the worm 43 drives the worm wheel 42 to rotate, which in turn causes the worm gear 421 to rotate in the forward direction. The forward rotation of the worm gear 421 drives the rudder gear 411 to rotate, which in turn causes the rudder 411 to rotate into the hull 10. The rudder 411 no longer extends from the lower end of the hull 10.

[0055] After the hull 10 is turned around, the stern of the hull 10 is lowered. At this time, the stern of the hull 10 is on the beach, and the front of the hull 10 is in the sea. The handle 47 rotates downward to its original position under the elastic force of the return torsion spring, that is, the adjusting rod 46 slides downward to its original position. The downward sliding of the adjusting rod 46 drives the transmission plug 461 to slide to the original position of the transmission tube 45, which in turn causes the support plate 25 to slide relative to the telescopic plate 21 to its original position. The grab plate 22 is once again in contact with the beach. After the hull 10 has rotated half a turn, when the hull 10 slides towards the sea, the grab plate 22 can no longer be inserted into the beach. The adjusting rod 46 slides, causing the rack 462 to slide back to its original position. The rack 462 can no longer drive the gear shift ratchet 432 to rotate. The rack 462 slides until it is no longer connected to the gear shift ratchet 432. At this time, the stop pawl 481 restricts the power storage ratchet 431 from rotating in the opposite direction. The rudder 41 is stored inside the hull 10 and will not come into contact with the beach.

[0056] When the athlete trains again, boarding the hull 10 and sitting on seat 32, seat 32 slides downwards to its lower limit under gravity. Support spring 33 compresses and stores power, causing hydraulic oil in pressure pipe 311 to return to sealing pipe 101. Sealing plug 212 slides upwards to its original position, causing telescopic disc 21 to return to storage cavity 105. Hydraulic oil in sealing pipe 101 enters linkage pipe 24, causing linkage plug 232 to slide relative to linkage pipe 24. This causes grab plate 22 to rotate upwards into telescopic disc 21, no longer extending from the lower end of hull 10. Simultaneously, the controller controls electric push rod 12 to extend, pushing propeller 11 downwards until it touches the sand. Because the lower front of hull 10 has a sloped structure that conforms to the sand, at this point, the stern of hull 10 touches the sand, while the front of hull 10 tilts upwards relative to the sand, with propeller 11 positioned in the sea. At the same time, propeller 11 activates, propelling hull 10 towards the sea surface without the need for assistance from personnel.

[0057] After the hull 10 enters the sea, the buoyancy block 48 at the stern slides upward under the buoyancy of the water, which in turn causes the stop pawl 481 to slide until it is no longer in contact with the power-accumulating ratchet 431. The worm gear 43 rotates in the opposite direction under the elastic force of the power-accumulating torsion spring 44, which in turn causes the rudder 41 to rotate downward to its original position. Immediately afterwards, the controller controls the propeller 11 to stop working and controls the electric push rod 12 to retract. The propeller 11 is then stored inside the hull 10, and the hull 10 changes to normal competition mode, allowing the athletes to conduct normal training.

[0058] When athletes disembark on the beach, this invention allows them to remain firmly on the sand after leaving the boat, preventing them from drifting with the waves. It enables easy and effortless turning without the need for assistance from other personnel, and the waves do not cause the boat to move during the turning process. After athletes board the boat, it provides short-term propulsion towards the sea, simulating the assistance required from other personnel and reducing the number of people involved. When used for daily training, this invention functions like a normal racing boat once on the sea surface, and requires no assistance from other staff after leaving the sea, reducing training costs and contributing to improved competition results.

Claims

1. A sprint-type single-person rowing device, characterized in that: It includes a hull (10), a gripping disc (2) located at the front of the hull (10), and an adjustment part (4) located at the stern of the hull (10); the gripping disc (2) includes a telescopic disc (21) longitudinally slidably connected to the lower part of the hull (10), a plurality of horizontally arranged gripping plates (22) rotatably connected to a rotating shaft below the telescopic disc (21) and capable of being inserted into the sand, and a support disc (25) longitudinally slidably connected to the telescopic disc (21) and capable of abutting against the sand. A seat (32) is longitudinally slidably connected to the hull (10) and is drivenly connected to the telescopic disc (21) and the gripper plate (22); a rudder (41) with a horizontally arranged rotating shaft is rotatably connected to the lower end of the hull (10); the adjustment part (4) includes a handle (47) rotatably connected to the upper end of the hull (10) and drivenly connected to the support disc (25); the rotation of the handle (47) can drive the rudder (41) to rotate; A sliding base (31) is slidably connected inside the hull (10) along its length; a pressure tube (311) is formed at the upper end of the sliding base (31); a pressure plug (321) is formed at the lower end of the seat (32) and is slidably connected to the pressure tube (311); a support spring (33) is provided between the sliding base (31) and the seat (32) to keep them apart. The hull (10) has a sealing pipe (101) that communicates with the pressure pipe (311); the telescopic disc (21) has a sealing plug (212) that is coaxially arranged and slidably connected to the sealing pipe (101). The gripping disc (2) includes a linkage column (23) slidably connected to the telescopic disc (21) and drivenly connected to each of the gripping plates (22), and a linkage pipe (24) fixedly connected to the telescopic disc (21) and communicating with the sealing pipe (101); the linkage column (23) is formed with a linkage plug (232) that is slidably and sealedly connected to the linkage pipe (24). The gripper plate (22) is formed with an eccentrically arranged eccentric groove (221); the linkage column (23) is formed with a plurality of drive columns (231) that are slidably connected to the eccentric groove (221) and can drive the eccentric groove (221) to rotate.

2. The sprint-type single-person rowing device as described in claim 1, characterized in that: The telescopic disc (21) has a non-cylinder (215) formed at the center of its upper end; the hull (10) has a non-circular hole (103) formed inside it that is slidably connected to the non-cylinder (215); the non-circular hole (103) has the same cross-sectional shape as the non-cylinder (215).

3. The sprint-type single-person rowing device as described in claim 1, characterized in that: The telescopic disc (21) has a coaxially arranged annular cavity (211); the support disc (25) has an annular plug (252) that is slidably connected to the annular cavity (211); the adjustment part (4) includes a transmission pipe (45) that is fixedly connected to the hull (10) and communicates with the annular cavity (211) and a transmission plug (461) that is slidably connected to the transmission pipe (45) and is slidably connected to the handle (47).

4. The sprint-type single-person rowing device as described in claim 3, characterized in that: The outer periphery of the support plate (25) is formed with multiple longitudinally arranged anti-rotation grooves (251); the hull (10) is formed with multiple longitudinally arranged anti-rotation columns (104) that can slide with the anti-rotation grooves (251); when the anti-rotation column (104) is located in the anti-rotation groove (251), the length direction of the grab plate (22) is perpendicular to the length direction of the hull (10).

5. The sprint-type single-person rowing device as described in claim 3, characterized in that: The adjustment unit (4) includes a worm gear (42) rotatably connected to the hull (10) and driven by the rudder (41), a worm (43) rotatably connected to the hull (10) and driven by the worm gear (42), and a ratchet rack (462) fixedly connected to the transmission plug (461) and driven by the worm (43).

6. The sprint-type single-person rowing device as described in claim 5, characterized in that: A coaxially arranged power-storing ratchet (431) is formed on the worm (43); a buoyancy block (48) that can float on the water surface is longitudinally slidably connected to the lower end of the hull (10); a stop pawl (481) that can restrict the reverse rotation of the power-storing ratchet (431) is formed on the buoyancy block (48); the sliding of the rack (462) can only drive the worm (43) to rotate in the forward direction; a power-storing torsion spring (44) is provided between the worm (43) and the hull (10).

7. The sprint-type single-person rowing device as described in claim 3, characterized in that: The upper end of the transmission plug (461) is formed with a horizontally arranged adjusting rod (46); one end of the handle (47) is rotatably connected to the hull (10) and the rotating shaft is horizontally arranged; the middle part of the handle (47) is formed with a lever groove (471) that is slidably connected to the adjusting rod (46) for driving the adjusting rod (46) to slide longitudinally.

8. The sprint-type single-person racing boat device as described in claim 1, characterized in that: The lower front end of the hull (10) is longitudinally slidably connected to a propeller (11) for driving the hull (10) to sail on the water surface; an electric push rod (12) for driving the propeller (11) to slide longitudinally is fixedly connected inside the hull (10).

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