CN112849345A

CN112849345A - Multifunctional paddle board

Info

Publication number: CN112849345A
Application number: CN202110190718.1A
Authority: CN
Inventors: 吴良友
Original assignee: Hangzhou Guoqiu Sports Culture Co ltd
Current assignee: Hangzhou Guoqiu Sports Culture Co ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-05-28

Abstract

The invention discloses a multifunctional paddle board, which comprises a paddle board, wherein a chute is arranged in the paddle board, two floating blocks are symmetrically arranged on the paddle board from left to right, a cylinder is respectively arranged on each floating block, a backrest device is arranged in the chute, each floating block is respectively provided with a rotating device, and a paddling device is respectively arranged on each cylinder. So that the resistance is reduced in the process of resetting the water skis, and the water skis can be quickly reset.

Description

Multifunctional paddle board

Technical Field

The invention belongs to the field of sports, and particularly relates to a multifunctional paddle board.

Background

The paddle board is a tool commonly used for water games, and helps an operator to exercise water balance force and arm force, however, in the actual use process of the prior art paddle board, the comfort is poor, especially for some novice with insufficient experience, the novice can not ride on the paddle board when launching water and only can adopt kneeling position, or sitting posture, however, kneeling posture affects the balance of the operator on the paddle board, while the width of the two sides of the paddle board is usually large in sitting posture, so that the inner wall of thigh is painful after sitting down, and leg numbness occurs for a while, in addition, when in actual use, a part of novices can not use the paddle-rowing rod, usually stay in place for half a day and can not move forward, and the prior art does not have a paddle board which can improve the comfort of an operator in the using process, while ensuring the balance of the operator and an apparatus to assist the operator in using the rowing bar.

Disclosure of Invention

The invention provides a multifunctional paddle board, aiming at overcoming the problems that the riding comfort and the balance of the paddle board are poor and the use of a paddle rod is not easy to learn in the prior art, and the multifunctional paddle board improves the use comfort of an operator, strengthens the balance of the paddle board and helps the operator to slide on the water surface quickly.

The technical scheme of the invention is as follows: a multifunctional paddle board comprises a paddle board, wherein a sliding groove is formed in the paddle board, two floating blocks are symmetrically arranged on the paddle board from left to right, a cylinder is arranged on each floating block, a backrest device is arranged in the sliding groove, a rotating device is arranged on each floating block, and a paddling device is arranged on each cylinder; the rotating device comprises a floating block fixedly arranged on one end face of a paddle board, a transmission cavity is arranged in the floating block, a ball bearing is arranged on the inner wall of the transmission cavity in a press fit mode, a cylinder is arranged on an inner ring of the ball bearing in a press fit mode, a through hole is formed in the cylinder, a paddle rod is arranged in the through hole, two sets of reset components are symmetrically arranged on the cylinder in a left-right mode, each reset component comprises a fixed reset rod arranged on one end face of the cylinder, an arc groove is formed in one end face of each reset rod, a ball is arranged in the arc groove in a rolling mode, the inner wall of the transmission cavity is provided with a reset cavity, and the front end wall.

After the operator rides on the paddle board in the use, the back butt is to back device, the one end of paddle pole is held respectively to both hands, after the hand bracing piece is held to four fingers, both arms swing and drive the paddle pole and rotate, the paddle pole drives the cylinder and rotates in the transmission intracavity, the paddle pole drives the device of paddling and rotates, make the paddle board advance, drive the release link rotation in the paddle pole rotation, the release link rotation makes first spring store elastic property, after the paddle pole rotates and makes the paddle board advance, first spring resumes initial state, make the paddle pole reset, so that the operator rotates the paddle pole next time.

Preferably, the rowing device comprises a rotating cavity arranged in a cylinder, the rotating cavity is rotatably provided with a transmission shaft, a first gear is fixedly arranged on the cylinder, the transmission cavity is located in the transmission cavity, a second gear is fixedly arranged on the transmission shaft, a reserved cavity is formed in the right end wall of the transmission cavity, a connecting shaft is arranged on the upper end wall and the lower end wall of the reserved cavity in a rotating mode, a third gear is fixedly arranged on the connecting shaft and is meshed with the first gear, the third gear is equal to the first gear in radius, a fourth gear is fixedly arranged on the connecting shaft and is meshed with the second gear, the fourth gear is equal to the second gear in radius, a linkage cavity is arranged in a paddle lever, the upper side of the transmission shaft extends into the linkage cavity, and a single-rail wheel is fixedly arranged on the transmission shaft.

Preferably, the rowing device is still including setting up the arrangement chamber in the oar pole, it rotates to be equipped with the minor axis to settle chamber lower extreme wall, the minor axis with the single track wheel passes through the conveyer belt transmission and connects, the minor axis with the single track wheel radius is the same, the fixed fifth gear that is equipped with on the minor axis, minor axis upper end wall rotates and is equipped with the axis of rotation, the cover is equipped with the sixth gear in the axis of rotation, the sixth gear with fifth gear engagement, the sixth gear with the fifth gear radius equals, the cover is equipped with supplementary hollow post in the axis of rotation, the axis of rotation with supplementary hollow post rotates and connects, the fixed floater that is equipped with on the supplementary hollow post, floater downside and surface of water butt, the fixed mounting plate that is equipped with of terminal surface under the axis of rotation.

Preferably, the paddling device further comprises a bilateral symmetry component, the two water-stirring components are arranged on the lower end face of the mounting plate, each water-stirring component comprises a mounting block fixedly arranged on the lower end face of the mounting plate, a rotating groove is formed in one end face, close to each other, of the mounting block, an open groove is formed in the inner wall of the rotating groove, a rotating shaft is arranged in the rotating groove, a protruding block is fixedly arranged on the rotating shaft, and the protruding block is connected with the inner wall of the open groove through a second spring.

Preferably, the paddling device further comprises a sliding cavity arranged on the upper side face of the paddle rod, a sliding block is arranged in the sliding cavity in a sliding mode, the sliding block is connected with the lower end wall of the sliding cavity through a third spring, a hand support rod is fixedly arranged on the upper end face of the sliding block, two steel wire ropes are fixedly arranged on the right end face of the sliding block, the other ends of the two steel wire ropes are connected with the two ends of the rotating shaft, and a water sliding plate is fixedly arranged on the rotating shaft.

When an operator uses the four fingers to press the hand supporting rod, the hand supporting rod drives the first spring to rotate through the steel wire rope, so that the water skiing board rotates around the first spring, the water skiing board enters the water surface and is vertical to the water surface, when the operator uses arm force to rotate the paddle rod to drive the cylinder to rotate, the cylinder drives the first gear to rotate, the first gear drives the third gear to rotate, the third gear drives the fourth gear to rotate, the fourth gear drives the second gear to rotate, the second gear drives the transmission shaft to rotate, the transmission shaft drives the single-rail wheel to rotate, the single-rail wheel drives the short shaft to rotate through the transmission belt, the short shaft drives the fifth gear to rotate, the fifth gear drives the sixth gear to rotate, the rotating shaft drives the placing plate to rotate, the placing plate drives the water skiing board on the placing plate to rotate, and the paddle rod is rotated in the rotating process through the motion mode, the water skis revolve around the cylinder, self rotation occurs, the water skis are enabled to be in a vertical state with the advancing direction all the time in the advancing process of the paddle boards, a part of force of an operator is avoided to enable the two water skis to be mutually offset in the paddling process, the arm force of the operator is enabled to be completely converted into the advancing power of the paddle boards, the generation of useless work is avoided, meanwhile, in the automatic resetting process of the rotating device, the pressing force of the hand supporting rod can be loosened by four fingers of the operator, the rotating shaft is enabled to be in the initial state under the action of the second spring, the water skis and the water surface are enabled to be in a parallel state in height, the resistance is reduced in the resetting process of the water skis, and the paddle rods are enabled to be rapidly.

Preferably, the backrest device comprises a sliding groove formed in the front end face of the paddle board, two groups of sliding assemblies are symmetrically arranged in the rear end of the sliding groove in a bilateral mode, each sliding assembly comprises a linear groove formed in the rear end wall of the sliding groove, a connecting block is arranged in the linear groove in a sliding mode, the connecting block is connected with the lower end wall of the linear groove through a fourth spring, a connecting cavity is formed in one end face, close to the connecting block, two installing shafts are arranged in the connecting cavity in a rotating mode, the inner walls of the connecting cavities are connected through coil springs, a baffle is fixedly arranged on each installing shaft, and leg installing grooves are formed in the left end face and the right end face of the paddle board respectively.

When an operator is skilled in the invention, the operator can push the baffle plate by using the back, so that the baffle plate drives the connecting block to drive the linear groove to slide, the two legs of the operator are placed on the paddle rod from the leg arrangement groove, and the back of the operator abuts against the baffle plate, so that the hand support rod can be pressed by the two legs, the paddle rod rotates, the paddle plate moves forwards or backwards, the use pleasure of the invention is improved, and the operator can be helped to exercise the leg strength.

Has the advantages that:

1. according to the invention, the rotating device is arranged, so that after an operator slides the water surface by using the paddle rod to enable the paddle board to advance, the paddle rod automatically restores to the initial state, the operator can be helped to rapidly use the paddle rod to enable the paddle board to advance, the confidence of the operator in using the invention is improved, the interestingness is increased, and meanwhile, the arm strength of the operator is strengthened and exercised;

2. according to the invention, the paddling device is arranged, so that the paddling plates rotate when revolving around the cylinder in the rotation process of the paddle rod, the paddling plates rotate per se, the paddling plates are always in a vertical state with the advancing direction in the advancing process of the paddle plates, a part of force of an operator is avoided, the two paddling plates are mutually offset in the paddling process, the arm force of the operator is completely converted into the advancing power of the paddle plates, the generation of useless work is avoided, and meanwhile, in the automatic resetting process of the rotating device, the paddling plates are in a parallel state with the water surface in height, so that the resistance is reduced in the resetting process of the paddling plates, and the paddling plates are quickly reset;

3. the invention enables an operator to ride on the paddle board for playing by arranging the backrest device, improves the comfort, can lie on the baffle plate, and enables the paddle lever to rotate by pedaling one end of the paddle lever with two legs, thereby improving the use pleasure of the invention and helping the operator to exercise the leg strength.

Drawings

FIG. 1 is an overall cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 4 is an enlarged schematic view at C of FIG. 2;

FIG. 5 is a cross-sectional view taken at D-D of FIG. 4;

FIG. 6 is a cross-sectional view taken at E-E of FIG. 1;

fig. 7 is a sectional view at F-F of fig. 6.

In the figure, a paddle board 11, a sliding chute 12, a fourth spring 13, a straight line groove 14, a connecting block 15, a leg placing groove 16, a floating block 17, a cylinder 18, a paddle rod 19, an auxiliary hollow column 20, a floating ball 21, a baffle 22, a placing shaft 23, a coil spring 24, a sliding cavity 25, a third spring 26, a sliding block 27, a hand supporting rod 28, a steel wire rope 29, a transmission cavity 30, a transmission shaft 31, a second gear 32, a reserved cavity 33, a fourth gear 34, a third gear 35, a connecting shaft 36, a ball bearing 37, a first gear 38, a ball 39, a reset cavity 40, a circular arc groove 41, a reset rod 42, a through hole 43, a linkage cavity 45, a single rail wheel 46, a transmission belt 47, a placing cavity 48, a short shaft 49, a fifth gear 50, a rotating shaft 51, a sixth gear 52, a placing board 55, a water sliding board 56, a first spring 57, a rotating groove 60, a rotating groove 61, a lug 62, a second spring 63, a rotating cavity 64, Connecting cavity 66 and rotating shaft 67.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 7, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. For convenience of description, the specific form of the spring attachment is not described below, and may be provided in the conventional manner of a mechanical design manual, i.e., by providing a groove or protrusion for positioning the spring.

As shown in fig. 1-7, a multifunctional rowing plate comprises a paddle 11, a chute 12 is arranged in the paddle 11, two floating blocks 17 are symmetrically arranged on the paddle 11 from left to right, a column 18 is arranged on each floating block 17, a backrest device is arranged in the chute 12, a rotating device is arranged on each floating block 17, and a rowing device is arranged on each column 18; rotating device is including the fixed kicking block 17 that sets up at a paddle 11 terminal surface, be equipped with transmission chamber 30 in the kicking block 17, the pressure equipment of transmission chamber 30 inner wall is equipped with ball bearing 37, the pressure equipment of ball bearing 37 inner circle is equipped with cylinder 18, be equipped with through-hole 43 in the cylinder 18, be equipped with oar pole 19 in the through-hole 43, bilateral symmetry is equipped with two sets of reset assembly on the cylinder 18, reset assembly is including the fixed release link 42 that sets up at a cylinder 18 terminal surface, circular arc groove 41 has been seted up to release link 42 terminal surface, the roll is equipped with ball 39 in the circular arc groove 41, reset chamber 40 has been seted up to transmission chamber 30 inner wall, ball 39 front and back end wall is connected.

After an operator rides on the paddle board 11 in the using process and the back of the operator abuts against the backrest device, one end of the paddle rod 19 is respectively held by two hands, after the hand support rod 28 is held by four fingers, the two arms swing to drive the paddle rod 19 to rotate, the paddle rod 19 drives the cylinder 18 to rotate in the transmission cavity 30, the paddle rod 19 drives the paddling device to rotate, the paddle board 11 advances, the reset rod 42 is driven to rotate while the paddle rod 19 rotates, the reset rod 42 rotates to enable the first spring 57 to store elastic performance, and after the paddle rod 19 rotates to enable the paddle board 11 to advance, the first spring 57 restores to the initial state to enable the paddle rod 19 to reset, so that the operator can rotate the paddle rod 19 next time.

As shown in fig. 1-7, the rowing device includes a rotating cavity 64 disposed in the cylinder 18, a transmission shaft 31 is rotatably disposed in the rotating cavity 64, a first gear 38 is fixedly disposed on the cylinder 18, the transmission cavity 30 is disposed in the transmission cavity 30, a second gear 32 is fixedly disposed on the transmission shaft 31, a reserved cavity 33 is disposed on a right end wall of the transmission cavity 30, a connection shaft 36 is rotatably disposed on an upper end wall and a lower end wall of the reserved cavity 33, a third gear 35 is fixedly disposed on the connection shaft 36, the third gear 35 is engaged with the first gear 38, the third gear 35 has the same radius as the first gear 38, a fourth gear 34 is fixedly disposed on the connection shaft 36, the fourth gear 34 is engaged with the second gear 32, the fourth gear 34 has the same radius as the second gear 32, a linkage cavity 45 is disposed in the paddle rod 19, an upper side of the transmission shaft 31 extends into the linkage cavity 45, and a single-rail wheel 46 is fixedly disposed on the transmission.

As shown in fig. 1-7, the rowing device further includes a placement cavity 48 disposed in the paddle 19, a short shaft 49 is rotatably disposed on a lower end wall of the placement cavity 48, the short shaft 49 is in transmission connection with the monorail wheel 46 through a conveyor belt 47, the short shaft 49 has the same radius as the monorail wheel 46, a fifth gear 50 is fixedly disposed on the short shaft 49, a rotating shaft 51 is rotatably disposed on an upper end wall of the short shaft 49, a sixth gear 52 is sleeved on the rotating shaft 51, the sixth gear 52 is meshed with the fifth gear 50, the sixth gear 52 has the same radius as the fifth gear 50, an auxiliary hollow column 20 is sleeved on the rotating shaft 51, the rotating shaft 51 is rotatably connected with the auxiliary hollow column 20, a floating ball 21 is fixedly disposed on the auxiliary hollow column 20, a lower side of the floating ball 21 abuts against a water surface, and a placement plate 55 is fixedly.

As shown in fig. 1-7, the paddling device further comprises two water-stirring assemblies which are arranged on the lower end face of the mounting plate 55 in a bilateral symmetry manner, each water-stirring assembly comprises a mounting block 65 which is fixedly arranged on the lower end face of the mounting plate 55, a rotating groove 60 is formed in one end face, close to each other, of the mounting blocks 65, an open groove 61 is formed in the inner wall of the rotating groove 60, a rotating shaft 67 is arranged on one end wall, close to each other, of the two rotating grooves 60 in a rotating manner, a convex block 62 is fixedly arranged on the rotating shaft 67, and the convex block 62 is connected with the inner wall of the.

As shown in fig. 1-7, the rowing device further includes a sliding cavity 25 formed in the upper side surface of the paddle 19, a sliding block 27 is slidably disposed in the sliding cavity 25, the sliding block 27 is connected to the lower end wall of the sliding cavity 25 through a third spring 26, a hand support bar 28 is fixedly disposed on the upper end surface of the sliding block 27, two steel wire ropes 29 are fixedly disposed on the right end surface of the sliding block 27, the other ends of the two steel wire ropes 29 are connected to the two ends of a rotating shaft 67, and a water sliding plate 56 is fixedly disposed on the rotating shaft 67.

When an operator uses the hand support rod 28, the hand support rod 28 drives the first spring 57 to rotate through the steel wire 29, so that the water slide plate 56 rotates around the first spring 57, at the moment, the water slide plate 56 enters the water surface and is vertical to the water surface, when the operator uses arm force to rotate the paddle rod 19 to drive the cylinder 18 to rotate, the cylinder 18 drives the first gear 38 to rotate, the first gear 38 drives the third gear 35 to rotate, the third gear 35 drives the fourth gear 34 to rotate, the fourth gear 34 drives the second gear 32 to rotate, the second gear 32 drives the transmission shaft 31 to rotate, the transmission shaft 31 drives the monorail wheel 46 to rotate, the monorail wheel 46 drives the stub shaft 49 to rotate through the conveyor belt 47, the stub shaft 49 drives the fifth gear 50 to rotate, the fifth gear 50 drives the sixth gear 52 to rotate, the sixth gear 52 drives the rotating shaft 51 to rotate, the rotating shaft 51 drives the placing plate 55 to rotate, the placing plate 55 drives the water sliding plates 56 on the placing plate to rotate, the paddle rod 19 rotates in the moving mode, the water sliding plates 56 rotate around the column 18 and rotate, the water sliding plates 56 are always perpendicular to the advancing direction in the advancing process of the paddle board 11, a part of force of an operator is avoided, the two water sliding plates 56 are offset in the paddling process, arm force of the operator is completely converted into advancing power of the paddle board 11, useless work is avoided, meanwhile, in the automatic resetting process of the rotating device, the pressing force of the hand supporting rod 28 can be released by four fingers of the operator, the rotating shaft 67 is enabled to restore to the initial state under the action of the second spring 63, the water sliding plates 56 are enabled to be parallel to the water surface in height, resistance is reduced in the resetting process of the water sliding plates 56, and the paddle rod 19 is enabled to reset rapidly.

As shown in fig. 1-7, the backrest device includes a sliding slot 12 provided on a front end surface of the paddle board 11, two sets of sliding assemblies are symmetrically provided in a rear end of the sliding slot 12, each sliding assembly includes a linear slot 14 provided on a rear end wall of the sliding slot 12, a connecting block 15 is slidably provided in the linear slot 14, the connecting block 15 is connected to a lower end wall of the linear slot 14 through a fourth spring 13, a connecting cavity 66 is provided on one end surface of the connecting block 15 close to each other, a mounting shaft 23 is rotatably provided in the two connecting cavities 66, the mounting shaft 23 is connected to an inner wall of the connecting cavity 66 through a coil spring 24, a baffle 22 is fixedly provided on the mounting shaft 23, and leg mounting slots 16 are respectively provided on left and right.

When an operator is skilled in the invention, the operator can push the baffle plate 22 by the back, so that the baffle plate 22 drives the connecting block 15 to drive the linear groove 14 to slide, the two legs of the operator are placed on the paddle rod 19 from the leg placement grooves 16, at the moment, the operator can press the hand support rod 28 by the two legs after the back of the operator abuts against the baffle plate 22, so that the paddle rod 19 rotates, the paddle plate 11 moves forward or backward, the use pleasure of the invention is improved, and meanwhile, the operator can be helped to exercise leg strength.

Other parts in the present invention are not described in detail for the prior art.

Claims

1. A multi-functional oar board of drawing, includes oar board (11), its characterized in that: a sliding groove (12) is formed in the paddle board (11), two floating blocks (17) are symmetrically arranged on the paddle board (11) from left to right, a cylinder (18) is arranged on each floating block (17), a backrest device is arranged in the sliding groove (12), a rotating device is arranged on each floating block (17), and a rowing device is arranged on each cylinder (18); the rotating device comprises a floating block (17) fixedly arranged on one end surface of the paddle board (11), a transmission cavity (30) is arranged in the floating block (17), a ball bearing (37) is arranged on the inner wall of the transmission cavity (30) in a press-fitting manner, a cylinder (18) is arranged on the inner ring of the ball bearing (37) in a press-fitting manner, a through hole (43) is arranged in the cylinder (18), a paddle rod (19) is arranged in the through hole (43), two groups of reset components are symmetrically arranged on the left and the right of the column (18), the reset component comprises a reset rod (42) fixedly arranged on one end surface of the cylinder (18), one end surface of the reset rod (42) is provided with an arc groove (41), a ball (39) is arranged in the arc groove (41) in a rolling way, the inner wall of the transmission cavity (30) is provided with a reset cavity (40), and the front end wall and the rear end wall of the ball (39) are connected with the inner wall of the reset cavity (40) through a first spring (57).

2. A multi-function paddle board as claimed in claim 1, wherein: the rowing device comprises a rotating cavity (64) arranged in a cylinder (18), a transmission shaft (31) is arranged in the rotating cavity (64), a first gear (38) is fixedly arranged on the cylinder (18), the transmission cavity (30) is positioned in the transmission cavity (30), a second gear (32) is fixedly arranged on the transmission shaft (31), a reserved cavity (33) is formed in the right end wall of the transmission cavity (30), a connecting shaft (36) is arranged on the upper end wall and the lower end wall of the reserved cavity (33) in a rotating mode, a third gear (35) is fixedly arranged on the connecting shaft (36), the third gear (35) is meshed with the first gear (38), the radius of the third gear (35) is equal to that of the first gear (38), a fourth gear (34) is fixedly arranged on the connecting shaft (36), and the fourth gear (34) is meshed with the second gear (32), the fourth gear (34) and the second gear (32) are equal in radius, a linkage cavity (45) is arranged in the paddle rod (19), the upper side of the transmission shaft (31) extends into the linkage cavity (45), and a monorail wheel (46) is fixedly arranged on the transmission shaft (31).

3. A multi-function paddle board as claimed in claim 2, wherein: the rowing device further comprises a placement cavity (48) arranged in the paddle rod (19), a short shaft (49) is rotatably arranged on the lower end wall of the placement cavity (48), the short shaft (49) is in transmission connection with the monorail wheel (46) through a conveyor belt (47), the short shaft (49) and the monorail wheel (46) have the same radius, a fifth gear (50) is fixedly arranged on the short shaft (49), a rotating shaft (51) is rotatably arranged on the upper end wall of the short shaft (49), a sixth gear (52) is sleeved on the rotating shaft (51), the sixth gear (52) is meshed with the fifth gear (50), the radius of the sixth gear (52) is equal to that of the fifth gear (50), an auxiliary hollow column (20) is sleeved on the rotating shaft (51), the rotating shaft (51) is rotatably connected with the auxiliary hollow column (20), and a floating ball (21) is fixedly arranged on the auxiliary hollow column (20), the lower side of the floating ball (21) is abutted against the water surface, and a mounting plate (55) is fixedly arranged on the lower end face of the rotating shaft (51).

4. A multi-function paddle board as claimed in claim 2, wherein: the rowing device further comprises bilateral symmetry, the two water-stirring assemblies are arranged on the lower end face of the mounting plate (55), each water-stirring assembly comprises a mounting block (65) fixedly arranged on the lower end face of the mounting plate (55), a rotating groove (60) is formed in one end face of the mounting block (65) close to each other, an open groove (61) and two open grooves (61) are formed in the inner wall of the rotating groove (60), one end wall of each rotating groove (60) close to each other rotates to be provided with a rotating shaft (67), a lug (62) is fixedly arranged on the rotating shaft (67), and the lug (62) is connected with the inner wall of the open groove (61) through a second spring (63).

5. A multi-function paddle board as claimed in claim 2, wherein: the rowing device is characterized by further comprising a sliding cavity (25) formed in the upper side face of the paddle rod (19), a sliding block (27) is arranged in the sliding cavity (25) in a sliding mode, the sliding block (27) is connected with the lower end wall of the sliding cavity (25) through a third spring (26), a hand supporting rod (28) is fixedly arranged on the upper end face of the sliding block (27), two steel wire ropes (29) are fixedly arranged on the right end face of the sliding block (27), the other ends of the two steel wire ropes (29) are connected with the two ends of the rotating shaft (67), and a water sliding plate (56) is fixedly arranged on the rotating shaft (67).

6. A multi-function paddle board as claimed in claim 1, wherein: the backrest device comprises sliding grooves (12) formed in the front end face of a paddle board (11), two groups of sliding assemblies are symmetrically arranged in the rear end of each sliding groove (12) in a bilateral mode and comprise linear grooves (14) formed in the rear end wall of each sliding groove (12), connecting blocks (15) are arranged in the linear grooves (14) in a sliding mode, the lower end walls of the connecting blocks (15) are connected through fourth springs (13), a connecting cavity (66) is formed in one end face, close to each other, of each connecting block (15), a mounting shaft (23) is arranged in the connecting cavity (66) in a rotating mode, the mounting shaft (23) is connected with the inner wall of the connecting cavity (66) through a coil spring (24), a baffle (22) is fixedly arranged on the mounting shaft (23), and leg mounting grooves (16) are formed in the left end face and right end face of the paddle board (11) respectively.