CN112516556A

CN112516556A - Multifunctional rowing machine

Info

Publication number: CN112516556A
Application number: CN202011482961.2A
Authority: CN
Inventors: 冷云祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-03-19

Abstract

The invention discloses a multifunctional rowing machine, which comprises a frame body, a water tank and a sliding seat, wherein the frame body is provided with a frame body; the middle part of the water tank is rotationally connected with a blade frame; a plurality of blade assemblies are arranged on the blade frame; the blade assembly comprises two blades and a driven gear; the middle part in the blade frame is rotationally connected with two driving gears; the middle part in the blade frame is connected with a stop column in a sliding way; the middle part in the blade frame is longitudinally connected with a driving shaft in a sliding way; a dragging belt is arranged in the frame body; when the driving shaft is positioned at the first position, the driving shaft is in transmission connection with the blade frame, and the stop column is inserted into the two driving gears; when the driving shaft is positioned at the second position, the driving shaft is not in transmission connection with the blade frame, and the driving shaft is inserted into the driving gear positioned above the driving shaft; when the drive shaft is in the third position, the drive shaft is only plugged into the drive gear located below. The invention can carry out physical exercise; the exercise intensity is adjustable; the exercise intensity is convenient to adjust, and the user can adjust the exercise intensity without leaving the sliding seat.

Description

Multifunctional rowing machine

Technical Field

The invention belongs to the technical field of sports equipment, and particularly relates to a multifunctional rowing machine.

Background

Chinese patent document No. CN208694209U discloses that the present invention provides a rowing machine, which includes a resistance adjusting mechanism; the resistance adjusting mechanism comprises a rotating shaft, a connecting rod and an adjusting assembly, and an external spline is arranged on the outer ring of the rotating shaft; the first end of the connecting rod is sleeved on the rotating shaft and is connected with the rotating shaft in a sliding manner; the inner ring of the first end is provided with an internal spline, and the internal spline is meshed with the external spline; the second end of the connecting rod is provided with a blade group which is arranged in the water tank so as to apply resistance to the rotating shaft in the rotating process of the rotating shaft; the adjusting component is connected with the first end and drives the connecting rod to slide relative to the rotating shaft. The utility model discloses a rowing machine through the altitude variation of blading in the water tank, can adjust the size of the resistance that the pivot received to can make the regulation more stable through splined connection, thereby, can satisfy user's different motion demands.

When the invention is used, the resistance of the blades is adjusted according to the height change of the blade group in the water tank, the water in the water tank cannot be filled, in the actual use process, the blades rotate to drive the water in the water tank to generate vortex, the water level around the water tank can rise, the rotating speeds of the blades are different, the water level heights near the blades in the water tank are also different, the resistance of the water borne by the blades is directly changed in real time, and the user can exercise without uniform force consumption in each pulling process, so that the body joints are easily damaged, and the body exercise is not facilitated.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects existing in the prior art, the multifunctional rowing machine with the constant resistance of the blades and the convenient and adjustable blade resistance is provided.

In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a multifunctional rowing machine comprises a frame body, a water tank fixedly connected in the frame body and used for containing water, and a sliding seat connected to the frame body in a sliding manner along the front-back direction and used for a user to sit; the middle part of the water tank is rotationally connected with a blade frame with a rotating shaft longitudinally arranged; the blade frame is located in the water tank along the blade frame circumferencial direction evenly is provided with a plurality of blade subassemblies.

The blade assembly comprises two blades which are longitudinally arranged and are in transmission connection with each other, wherein the blades are arranged along the radial direction of the blade frame, and a driven gear which is fixedly connected to one end, facing the rotating shaft of the blade frame, of each blade and is coaxially arranged with the rotating shaft of each blade.

The middle part in the blade frame is rotationally connected with two driving gears which are longitudinally arranged on rotating shafts and are respectively in transmission connection with the driven gear; the middle part in the blade frame is longitudinally and slidably connected with a stop column which can be inserted with the two driving gears and can enable the two driving gears to be relatively fixed.

The driving shaft which is coaxially arranged with the stopping column and can be in one-way transmission connection with the circumferential direction of the blade frame is longitudinally and slidably connected with the middle part in the blade frame; the driving shaft can be fixedly inserted with the driving gear and simultaneously drives the driving gear to synchronously rotate; the frame body is internally provided with a dragging belt for driving the driving shaft to rotate.

When the driving shaft is located at the first position, the driving shaft is in one-way transmission connection with the blade frame, and the stop column is inserted into the two driving gears.

When the driving shaft is located at the second position, the driving shaft is not in transmission connection with the blade frame, the driving shaft is inserted into the driving gear located above, and the stop column is only inserted into the driving gear located below.

When the driving shaft is located at the third position, the driving shaft is not in transmission connection with the blade frame, the driving shaft is only inserted into the driving gear located below, and the stop column is separated from the driving gear.

As a preferable scheme: an adjusting rod for driving the driving shaft to longitudinally slide is longitudinally and slidably connected in the frame body; two pedals which can drive the adjusting rod to slide downwards are rotatably connected in the frame body, and the pedals are arranged along the left and right directions; when the adjusting rod slides downwards, the driving shaft slides downwards; when the adjusting rod slides upwards, the driving shaft slides upwards.

As a preferable scheme: two pedal through grooves which are rotatably connected with the middle parts of the corresponding pedals are formed in one end, facing the sliding seat, of the frame body; limiting columns which are arranged along the left and right directions and can be abutted against the corresponding pedals are formed in the pedal through grooves; the two limiting columns comprise a second limiting column positioned above the pedal rotating shaft and a first limiting column positioned above the second limiting column; and the left side and the right side of the lower part of the adjusting rod are positioned above the first limiting column, and a pressing rod capable of abutting against the corresponding pedal is formed.

When the driving shaft is located at the first position, the pedal is not contacted with the limiting column; when the driving shaft is located at the second position, the corresponding pedal abuts against the first limiting column; when the driving shaft is located at the third position, the corresponding pedal is abutted against the second limiting column.

As a preferable scheme: a driving sleeve for driving the driving shaft to rotate is rotatably connected in the frame body; and a winding wheel for winding the dragging belt is formed on the outer wall of the driving sleeve close to the upper end.

As a preferable scheme: one end of the dragging belt, which is far away from the driving shaft, is fixedly connected with a pull rod; handles convenient for pulling the pull rod are respectively arranged at the two ends of the pull rod.

As a preferable scheme: two limiting columns which are symmetrically arranged are formed at the front end of the frame body; and the lower end of the limiting column is provided with an anti-falling groove for limiting the movement of the pull rod.

As a preferable scheme: a plurality of pawls are uniformly formed at the lower part of the outer wall of the driving shaft along the circumferential direction; a ratchet gear which can be in one-way transmission connection with the pawl is formed at the upper part of the blade frame; when the driving shaft is located at the first position, the pawl is in one-way transmission connection with the ratchet gear; when the drive shaft is located at the second position or the third position, the pawl is separated from the ratchet gear.

Compared with the prior art, the invention has the beneficial effects that: under initial condition, the water tank is full of water, and the pull rod is located the anticreep inslot, adjusts the pole and is located top extreme position, and the locking post is pegged graft simultaneously with two driven spliced eyes, and the joint post is with the fixed joint in first joint hole.

When the product is used for exercise, the frame body is placed on the horizontal plane, a user sits on the sliding seat, the legs bend knees, feet step on the pedals respectively, and the hands hold the handles respectively. The pedals are pedaled by feet with strength to enable the legs to be straightened, and meanwhile, the handles are pulled backwards by the hands, so that the sliding seat slides backwards to the body of a user along the sliding rail. The handle moves to drive the pull rod to move, so that the pull rod drives the dragging belt to move, the dragging belt drives the belt wheel to rotate, so that the driving sleeve rotates positively, and meanwhile, the spring twists and stores force. The drive sleeve rotates forward to drive the slide hole to drive the drive shaft to rotate forward, the drive shaft rotates forward to drive the pawl to drive the ratchet gear to rotate, the ratchet gear rotates to drive the driven rotary drum to rotate, and the driven rotary drum rotates to drive the blade assembly arranged on the blade frame to rotate.

The pedal is stopped to be pedaled with force, the handle is not pulled backwards any more, the driving sleeve rotates reversely under the elastic force of the spring, the dragging belt is wound on the belt winding wheel again, the dragging belt moves to drive the user to move forwards synchronously, the sliding seat is driven to slide forwards, and the user bends knees with both legs. Meanwhile, the pawl and the ratchet gear form a ratchet and pawl mechanism with one-way transmission, the drive sleeve rotates reversely to drive the drive shaft to rotate reversely, the reverse rotation of the drive shaft cannot enable the pawl to drive the ratchet gear to rotate, namely, the blade frame cannot rotate reversely when the drive sleeve rotates reversely. So reciprocal, the health intermittent type is exerted oneself and is made the sliding seat along slide rail reciprocating sliding, and the blade frame rotates towards same direction, and the blade subassembly rotates and stirs the water that is located the water tank, and the resistance of water has hindered the motion of blade subassembly to make the user have obvious resistance at gliding in-process backward, make the whole body joint of user obtain the motion. In the rotating process of the blade frame, the stop column is simultaneously connected with the two driven inserting holes in an inserting mode, so that the two driving gears are relatively fixed, the driven gears cannot rotate, and the included angle between the upper blade and the lower blade is kept unchanged.

The required motion intensity of different users is different, and when adjusting the motion intensity of this product, user's left foot heel stepped on corresponding footboard lower part for the footboard rotates to offset with first spacing post. The pedal rotates to abut against the pressure rod and drive the pressure rod to slide downwards, the pressure rod moves downwards to enable the adjusting rod to move downwards, and meanwhile the second spring compresses. The adjusting rod moves to enable the sliding clamping groove to downwards drive the sliding clamping head to downwards move, namely the driving shaft moves downwards, the driving shaft moves downwards to abut against the stop column and drive the stop column to downwards move, and meanwhile the first spring is compressed. When the pedal is abutted to the first limiting column, the driving shaft moves downwards until the pawl is separated from the ratchet gear, the driving insertion column is inserted into the driven insertion hole above the driving insertion column, meanwhile, the stop column moves downwards until the driving shaft is separated from the driven insertion hole above the driving insertion column, and the driving shaft can drive the driving gear above the driving insertion column to rotate.

Then, pull the handle backward for drive sleeve pipe forward rotation, the clockwork spring holds power, and drive sleeve pipe forward rotation drives the drive shaft forward rotation, and drive shaft forward rotation makes the drive peg graft post drive the driven spliced eye that is located the top and rotates and then make the drive gear forward rotation that is located the top. The driving gear located above rotates positively to drive the driven gear to rotate positively, the driven gear rotates to drive the upper blade to rotate so as to enable the upper synchronous gear to rotate, the upper synchronous gear rotates to drive the lower synchronous gear to rotate so as to enable the lower blade to rotate, and the included angle between the upper blade and the lower blade is reduced along with the positive rotation of the driven gear. The area of the blade assembly which is just opposite to water in the rotating direction is reduced, and the resistance of the water to the blade assembly is reduced, namely the exercise intensity is reduced. Stopping to stimulate the handle for the handle moves forward under the spring action of clockwork spring, and drive sleeve pipe drives drive shaft antiport, and then makes the drive gear antiport that is located the top, and the drive gear antiport that is located the top drives driven gear antiport, and then makes driven gear antiport, goes up the contained angle of blade and lower blade and rotates and increase along with driven gear direction. The handle is moved to finely adjust the exercise intensity so as to meet the requirements of different users on the exercise intensity.

After the adjustment is completed, the left heel of the user treads on the lower end of the corresponding pedal, so that the pedal rotates to the original position, and the pressing rod moves upwards to the original position under the action of the elastic force of the tension spring. Adjusting the pole upward movement and driving the drive shaft upward movement to initial position, pawl and ratchet gear meshing, drive plug post and driven plug hole separation, the locking post upward movement under the elastic force effect of first spring, and then pegs graft simultaneously with two driven plug holes, and two drive gear relatively fixed continue to temper according to above-mentioned step.

Similarly, the user's right heel steps on the corresponding lower portion of the pedal, so that the pedal rotates to abut against the second limiting column. The pedal rotates to abut against the pressure rod and drive the adjusting rod to move downwards, meanwhile, the second spring is compressed, and the adjusting rod moves to enable the driving shaft to move downwards. When the pedal is abutted to the second limiting column, the driving shaft moves downwards until the pawl is separated from the ratchet gear, the driving insertion column is inserted into the driven insertion hole positioned below, meanwhile, the stop column moves downwards until the stopping column is separated from the driven insertion hole positioned above and below, and the driving shaft can drive the driving gear positioned below to rotate. Then, the handle is pulled backwards, so that the driving sleeve drives the driving shaft to rotate in the forward direction, meanwhile, the spring stores power, the driving shaft rotates in the forward direction to drive the driving gear located below to rotate in the forward direction, and the driving gear located below rotates in the forward direction to drive the driven gear to rotate in the reverse direction. The contained angle of going up blade and lower blade rotates and increases along with driven gear direction, has increased the resistance of water to the blade subassembly promptly, has increaseed exercise intensity promptly. Stopping pulling the handle for the handle moves forward under the spring action of clockwork spring, and the drive sleeve makes the drive gear antiport that is located the below, and then makes driven gear forward rotation. The included angle of going up blade and lower blade is followed driven gear forward and is rotated and reduce, removes the handle, finely tunes the motion intensity to satisfy different users to the requirement of motion intensity.

After the adjustment is accomplished, the footboard lower extreme that corresponds is stepped on to user's right foot heel for the footboard rotates to the primary position, the depression bar upward movement is to the primary position under the spring action of extension spring, drive shaft upward movement is to the primary position simultaneously, pawl and ratchet gear meshing, drive peg graft post and driven jack separation, the locking post upward movement under the spring action of first spring, and then peg graft simultaneously with two driven jack, two drive gear relatively fixed, continue to temper according to above-mentioned step, temper the back that finishes, place the anticreep inslot with the pull rod.

According to the invention, the pedal is arranged and is rotatably connected in the frame body, when physical exercise is carried out, feet step on the pedal, and along with the reciprocating motion of the legs, the pedal rotates at a small angle according to the motion of the legs and is attached to the sole plate of a user, so that the motion pressure of the ankles of the user is reduced, and the ankle injury is prevented in the use process; simultaneously the footboard wide-angle rotates, can offset and make depression bar downstream with the depression bar, and then make drive shaft downstream, and then make pawl and ratchet gear separation, the drive peg graft post is pegged graft with driven spliced eye, the locking post is no longer pegged graft simultaneously with two driven spliced eyes simultaneously, the adjustment handle position makes the contained angle between upper leaf blade and the lower leaf blade change, thereby adjusted the resistance size of water to the leaf blade subassembly, adjusted exercise intensity promptly, the user need not to leave the sliding seat and both can simple and convenient completion adjustment.

According to the invention, by arranging the handle, when the clamping column is clamped with the first clamping hole, the blade frame is rotated along the axis of the blade frame by pulling the handle in a reciprocating manner, so that the blade assembly dials water in the water tank, the joints of the whole body of a user can be moved, and the whole body can be exercised; when joint post and second joint hole joint, through reciprocal promotion handle for the reciprocating sliding of sliding seat, and then can make user's waist abdomen muscle obtain taking exercise.

According to the invention, the driving shaft is arranged, when the driving shaft is positioned at the upper limit position, the pawl is meshed with the ratchet gear, the driving shaft rotates to drive the blade frame to synchronously rotate along the axis of the driving shaft, the handle is pulled in a reciprocating manner, and then the blade assembly stirs water in the water tank, so that physical exercise can be carried out; when the drive shaft downstream is pegged graft to drive spliced pole and driven spliced eye when pegging graft, pawl and ratchet gear separation, the position of adjustment handle, and then drive gear rotates, and drive gear rotates and drives driven gear and rotate for contained angle between last blade and the lower blade changes, thereby has adjusted the resistance size of water to the blade subassembly, has adjusted promptly and has tempered intensity, and the user need not to leave the completion adjustment that the sliding seat both can be simple and convenient.

The body exercise can be carried out, the blade assembly stirs water by pulling the first handle in a reciprocating manner, the movement strength is increased, and the exercise effect is improved; the water-saving device has adjustable exercise intensity, and changes the area of the blade component opposite to water in the moving direction, so that the resistance of the water to the blade is changed, and the exercise intensity is adjusted; the exercise intensity of the invention is convenient to adjust, the user can adjust the exercise intensity without leaving the sliding seat, and the operation is simple and convenient.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

Fig. 3 is a schematic exploded view of the present invention.

Fig. 4 is a schematic sectional view of the frame body of the present invention.

Fig. 5 is a schematic structural view of a blade assembly according to the present invention.

Fig. 6 is a schematic cross-sectional view of the blade mount of the present invention.

Fig. 7 is a schematic cross-sectional view of the drive sleeve of the present invention.

Fig. 8 is a schematic view of the construction of the drive shaft of the present invention.

Fig. 9 is an exploded view of the portion a of fig. 3 according to the present invention.

Fig. 10 is a schematic structural view of the tie rod of the present invention.

Fig. 11 is a schematic view of the structure of the adjusting lever of the present invention.

Fig. 12 is a schematic structural view of the sliding seat of the present invention.

Fig. 13 is a schematic view of the structure of the present invention when exercising the body.

Fig. 14 is a schematic view of the present invention with exercise intensity adjusted down.

Fig. 15 is a schematic view of the present invention with exercise intensity adjusted up.

Fig. 16 is a schematic structural view of the waist and abdomen exercise performed in embodiment 2 of the present invention.

11. A frame body; 111. a slide rail; 112. a guide wheel through groove; 113. a limiting column; 1131. a drop-proof groove; 114. a pedal through groove; 1141. a first limit post; 1142. a second limit post; 12. a pedal; 13. a water tank; 131. a positioning column; 14. a guide wheel; 15. a turnover wheel; 16. a moving wheel; 2. a blade assembly; 21. an upper blade; 211. an upper synchronizing gear; 22. a lower blade; 221. a lower synchronizing gear; 23. a driven gear; 31. a sliding seat; 311. a second clamping hole; 3111. a second limiting plate; 32. a sliding wheel; 33. a tape collecting box; 34. an extension band; 341. a plugboard; 41. a blade frame; 411. a support plate; 4111. rotating the hole; 412. a driven drum; 4121. a ratchet gear; 4122. a positioning ring; 4123. a through hole; 42. a positioning ring; 51. a drive sleeve; 511. a drive slide hole; 512. a belt winding wheel; 52. a tow band; 53. a clockwork spring; 6. a drive shaft; 61. a pawl; 62. an extension shaft; 63. driving the splicing column; 64. a sliding chuck; 71. a pull rod; 711. inserting grooves; 712. a first clamping hole; 7121. a first limit plate; 72. a handle; 721. a clamping column; 7211. a clamping and connecting plate; 81. adjusting a rod; 811. a sliding clamping groove; 812. a pressure lever; 82. a second spring; 91. a drive gear; 911. a support ring; 912. a driven jack; 92. a stopper post; 93. a first spring.

Detailed Description

Example 1

Referring to fig. 1 to 15, the multi-functional rowing machine of the present embodiment includes a frame 11, a water tank 13 fixedly connected to the frame 11 for containing water, and a sliding seat 31 slidably connected to the frame 11 in a front-back direction for a user to sit on; the middle part of the water tank 13 is rotatably connected with a blade frame 41 with a rotating shaft longitudinally arranged; a plurality of blade assemblies 2 are uniformly arranged on the blade frame 41 in the water tank 13 along the circumferential direction of the blade frame 41.

A driven drum 412 is formed in the center of the upper end of the blade frame 41; a positioning column 131 rotatably connected with the driven drum 412 is formed at the center of the bottom end in the water tank 13; two symmetrically arranged slide rails 111 which are slidably connected with the slide seat 31 are formed at the front end of the frame body 11; sliding wheel sets are symmetrically arranged at the left end and the right end of the sliding seat 31 at the upper ends of the corresponding sliding rails 111 respectively; the sliding wheel set comprises two sliding wheels 32 which are symmetrically arranged and are abutted against the corresponding sliding rails 111; the support body 11 is kept away from the one end of slide rail 111 is located the support body 11 left and right sides swivelling joint has the symmetry to set up be convenient for the removal wheel 16 that support body 11 removed.

The blade assembly 2 comprises two blades which are arranged longitudinally and are in transmission connection with each other, rotating shafts are arranged along the radial direction of the blade frame 41, and a driven gear 23 which is fixedly connected to one end of one blade, facing the rotating shaft of the blade frame 41, and is arranged coaxially with the rotating shaft of the blade; the two blades comprise a lower blade 22 positioned below and an upper blade 21 positioned above; the driven gear 23 is positioned in the driven drum 412 and is fixedly connected to one end of the upper blade 21 close to the driven drum 412; a through hole 4123 which penetrates through the driven drum 412 and is connected with the blade 21 in a rotating way is formed on the outer wall of the driven drum 412; a gear column fixedly inserted with the upper blade 21 is formed at the central position of one end of the driven gear 23 facing the corresponding upper blade 21; the gear column passes through the through hole 4123 outwards.

The upper end of the blade frame 41 is uniformly formed with supporting plates 411 which are as many as the blade assemblies 2 near the outer circumference; a rotating hole 4111 rotatably connected with the blade is formed at one side of the supporting plate 411 facing the driven drum 412 near the upper end; an upper synchronizing gear 211 which is coaxially arranged with the rotating shaft of the upper blade 21 is formed at one end of the upper blade 21 far away from the driven drum 412 and positioned on the inner side of the supporting plate 411; one end of the lower blade 22 far away from the driven drum 412 is positioned inside the supporting plate 411 and is formed with a lower synchronizing gear 221 which is coaxially arranged with the rotating shaft of the lower blade 22 and is in transmission connection with the upper synchronizing gear 211.

The middle part in the blade frame 41 is rotationally connected with two driving gears 91 which are longitudinally arranged on rotating shafts and are respectively in transmission connection with the driven gear 23; a stop column 92 which can be inserted into the two driving gears 91 and can fix the two driving gears 91 relatively is connected to the middle part of the blade frame 41 in a longitudinal sliding manner.

The driving gear 91 is rotatably connected to the inner middle part of the driven drum 412; a positioning ring 4122 protruding inward and abutting against the lower driving gear 91 is formed on the inner wall of the driven drum 412; a positioning ring 42 is fixedly connected to the upper end of the driving gear 91 positioned above the driven drum 412; the positioning ring 42 is fixed relative to the driven drum 412 by screws; one end of the driving gear 91 facing the other driving gear 91 is formed with a support ring 911 arranged coaxially with the driving gear 91; the two support rings 911 are abutted so that the driving gear 91 positioned above is meshed with the upper part of the driven gear 23, and the driving gear 91 positioned below is meshed with the lower part of the driven gear 23.

A driving shaft 6 which is coaxially arranged with the stop column 92 and can be in circumferential unidirectional transmission connection with the blade frame 41 is longitudinally and slidably connected to the middle part in the blade frame 41; the driving shaft 6 can be fixedly inserted into the driving gear 91 and simultaneously drives the driving gear 91 to synchronously rotate; a dragging belt 52 for driving the driving shaft 6 to rotate is arranged in the frame body 11.

A driven insertion hole 912 which penetrates through the driving gear 91 and can be inserted into the stop column 92 is formed in the center of the upper end of the driving gear 91; an extension shaft 62 is formed at the center of the lower end of the driving shaft 6; a driving plug-in column 63 capable of being plugged with the driven plug-in hole 912 is formed in the center of the lower end of the extension shaft 62; a first spring 93 for enabling the stop column 92 to move upwards is arranged between the stop column 92 and the positioning column 131; naturally, the stop posts 92 are plugged into the two driven plugging holes 912 simultaneously.

The horizontal sections of the driven plug hole 912, the stop column 92 and the plug column 63 are non-circular structures with the same shape; the diameter of the inner contact of the driving plug column 63 is larger than or equal to the diameter of the extension shaft 62; an arc-shaped structure which is convenient for the insertion column 63 to be inserted into the driven insertion hole 912 is formed at the peripheral edge of the lower end of the insertion column 63; the peripheral edge of the upper end of the stop column 92 is formed with an arc structure for facilitating the insertion of the stop column 92 into the driven insertion hole 912.

When the driving shaft 6 is located at the first position, the driving shaft 6 is located at the upper limit position, the driving shaft 6 is in one-way transmission connection with the blade frame 41, and the stop columns 92 are inserted into the two driving gears 91; the two driving gears 91 are relatively fixed, so that the included angle between the upper blade 21 and the lower blade 22 is constant; the drag strap 52 is pulled back and forth to make the blade assembly 2 stir the water in the water tank 13, and the resistance of the water hinders the movement of the blade assembly 2, so that the user can increase the movement intensity when doing exercise, which is beneficial to the body joint movement, and the body can be exercised.

When the driving shaft 6 is located at the second position, the driving shaft 6 is not in transmission connection with the blade frame 41, the driving shaft 6 is plugged with the driving gear 91 located above, and the stop column 92 is only plugged with the driving gear 91 located below; the two driving gears 91 can rotate relatively, the dragging belt 52 is pulled to drive only the driving gear 91 positioned above to rotate, and then the driven gear 23 rotates positively, so that the included angle between the upper blade 21 and the lower blade 22 is reduced, and the resistance of water to the blade assembly 2 is reduced, that is, the exercise intensity is reduced.

When the driving shaft 6 is located at the third position, the driving shaft 6 is not in transmission connection with the blade frame 41, the driving shaft 6 is only inserted into the driving gear 91 located below, and the stop column 92 is separated from the driving gear 91. The two driving gears 91 can rotate relatively, the dragging belt 52 is pulled to only drive the driving gear 91 positioned below to rotate, and then the driven gear 23 rotates reversely, so that the included angle between the upper blade 21 and the lower blade 22 is increased, the resistance of water to the blade assembly 2 is increased, and the exercise intensity is improved.

An adjusting rod 81 for driving the driving shaft 6 to longitudinally slide is longitudinally and slidably connected in the frame body 11; two pedals 12 which are symmetrically arranged and can drive the adjusting rod 81 to slide downwards are rotatably connected in the frame body 11 and are arranged along the left and right direction; when the adjusting lever 81 slides downward, the driving shaft 6 slides downward; when the adjustment lever 81 is slid upward, the driving shaft 6 is slid upward.

The adjusting rod 81 comprises a horizontally arranged cross rod and an inclined rod which is formed at the lower end of the cross rod and is connected with the frame body 11 in a sliding manner; a sliding clamping groove 811 arranged along the front-back direction is formed at the lower end of the cross rod; a sliding chuck 64 connected with the sliding clamping groove 811 in a sliding manner is formed at the upper end of the driving shaft 6; the driving shaft 6 and the adjusting rod 81 are longitudinally fixed relative to each other and can horizontally slide in the transverse direction.

When the body is exercised, the feet step on the pedal 12, and along with the reciprocating motion of the legs, the pedal 12 rotates at a small angle according to the motion of the legs and is attached to the sole plate of the user, so that the motion pressure of the ankles of the user is reduced, and the injury in the use process is prevented; meanwhile, the pedal 12 rotates at a large angle, the adjusting rod 81 can be driven to longitudinally slide, the position of the driving shaft 6 can be adjusted, the resistance of water to the blade assembly 2 can be adjusted, and a user does not need to leave the sliding seat 31, so that adjustment can be simply and conveniently completed.

Two symmetrically arranged pedal through grooves 114 which are rotatably connected with the middle parts of the corresponding pedals 12 are formed in one end of the frame body 11 facing the sliding seat 31; a limit column which is arranged along the left-right direction and can be abutted against the corresponding pedal 12 is formed in the pedal through groove 114; the two limiting columns comprise a second limiting column 1142 positioned above the rotating shaft of the pedal 12 and a first limiting column 1141 positioned above the second limiting column 1142; the left and right sides of the lower part of the adjusting rod 81 are positioned above the first limit column 1141, and a pressing rod 812 capable of abutting against the corresponding pedal 12 is formed.

A second spring 82 for sliding the adjusting rod 81 upwards is arranged between the lower end of the adjusting rod 81 and the frame body 11; in the natural state, the adjustment lever 81 is located at the upper limit position.

When the driving shaft 6 is located at the first position, the pedal 12 is not in contact with the limit column; when the driving shaft 6 is located at the second position, the corresponding pedal 12 abuts against the first position-limiting post 1141; when the driving shaft 6 is located at the third position, the corresponding pedal 12 abuts against the second position-limiting post 1142. The setting of spacing post makes the user more directly perceived when taking exercise intensity adjustment, and the operation is simple and convenient more.

A driving sleeve 51 for driving the driving shaft 6 to rotate is rotatably connected in the frame body 11; a winding pulley 512 for winding the dragging belt 52 is formed on the outer wall of the driving sleeve 51 near the upper end.

A driving sliding hole 511 which penetrates through the driving sleeve 51 and is only connected with the driving shaft 6 in a longitudinal sliding manner is respectively formed in the central position of the upper end of the driving sleeve 51; the cross section of the sliding connection part of the driving sliding hole 511 and the driving shaft 6 is a non-circular structure with the same shape; the driving shaft 6 can only slide longitudinally in the driving slide hole 511, and the driving sleeve 51 rotates to drive the driving shaft 6 to rotate synchronously.

A guide wheel through groove 112 communicated with the inside of the frame body 11 is formed at the upper end of the frame body 11; the guide wheel through groove 112 is rotatably connected with a guide wheel 14 with a rotating shaft arranged along the left-right direction; the frame body 11 is connected with a turnover wheel 15 with a rotating shaft longitudinally arranged in a rotating way near the belt winding wheel 512; the dragging belt 52 sequentially passes through the turnover wheel 15 and the guide wheel 14 and penetrates out of the frame body 11.

A spring 53 is arranged between the driving sleeve 51 and the frame body 11; in the initial state, the drag belt 52 is wound around the outer periphery of the take-up pulley 512, and when the drag belt 52 is pulled out, the drive sleeve 51 is rotated while the wind spring 53 is torsionally charged.

A pull rod 71 is fixedly connected to one end of the dragging belt 52 far away from the driving shaft 6; handles 72 convenient for pulling the pull rod 71 are respectively arranged at two ends of the pull rod 71.

The towing belt 52 is fixedly connected to the middle position of the pull rod 71, the user pulls the handle 72 through two arms respectively to pull out the towing belt 52, the resistance force on the two arms is equal, and the two arms obtain the same exercise intensity, which is beneficial for the user to do physical exercise.

Two limiting columns 113 which are symmetrically arranged are formed at the front end of the frame body 11; an anti-falling groove 1131 for limiting the movement of the pull rod 71 is formed at the lower end of the limiting column 113; in an initial state, the pull rod 71 is tightly abutted to the anti-drop groove 1131 under the elastic force of the spiral spring 53, and the positions of the pull rod 71 and the handle 72 are relatively fixed, so that the pull rod and the handle are convenient to store and arrange.

A plurality of pawls 61 are uniformly formed at the lower part of the outer wall of the driving shaft 6 along the circumferential direction; the upper part of the blade frame 41 is positioned in the driven drum 412 and is formed with a ratchet gear 4121 which can be in one-way transmission connection with the pawl 61; when the driving shaft 6 is located at the first position, the pawl 61 is in one-way transmission connection with the ratchet gear 4121; when the drive shaft 6 is located at the second position or the third position, the pawl 61 is separated from the ratchet gear 4121.

The pawl 61 and the ratchet gear 4121 constitute a ratchet-pawl mechanism; when the pawl 61 is engaged with the ratchet gear 4121, the driving shaft 6 rotates in the forward direction to rotate the driven drum 412 in the forward direction, the driving shaft 6 rotates in the reverse direction to rotate the driven drum 412, and the user only needs to pull the handle 72 back and forth to rotate the blade assembly 2 in the same direction continuously for physical exercise.

In the initial state, the water tank 13 is filled with water, the pull rod 71 is located in the anti-drop groove 1131, the adjusting rod 81 is located at the upper limit position, the stop column 92 is simultaneously inserted into the two driven insertion holes 912, and the clamping column 721 is fixedly clamped with the first clamping hole 712.

When the product is used for exercise, the frame body 11 is placed on a horizontal plane, a user sits on the sliding seat 31, the legs bend knees, the feet step on the pedals 12 respectively, and the hands hold the handles 72 respectively. The two feet pedal the pedals 12 with force to straighten the two legs, and simultaneously the two hands pull the handles 72 backwards, so that the sliding seat 31 slides backwards along the sliding rail 111 towards the user. The movement of the handle 72 drives the pull rod 71 to move, so that the pull rod 71 drives the dragging belt 52 to move, the dragging belt 52 drives the winding wheel 512 to rotate, so that the driving sleeve 51 rotates in the positive direction, and the winding spring 53 stores the torsional force. The forward rotation of the driving sleeve 51 causes the driving slide hole 511 to drive the driving shaft 6 to rotate in the forward direction, the forward rotation of the driving shaft 6 causes the pawl 61 to drive the ratchet gear 4121 to rotate, the rotation of the ratchet gear 4121 causes the driven drum 412 to rotate, and the rotation of the driven drum 412 drives the blade assembly 2 mounted on the blade frame 41 to rotate.

The pedal 12 is stopped to be pedaled with force, the handle 72 is not pulled backwards any more, the driving sleeve 51 rotates reversely under the elastic force of the spring 53, so that the dragging belt 52 is wound on the winding pulley 512 again, the dragging belt 52 moves to drive the user to move forwards, and further the sliding seat 31 is driven to slide forwards, and the user bends his knees. Meanwhile, the pawl 61 and the ratchet gear 4121 form a unidirectional transmission ratchet and pawl mechanism, the driving sleeve 51 rotates in reverse to drive the driving shaft 6 to rotate in reverse, and the reverse rotation of the driving shaft 6 cannot enable the pawl 61 to drive the ratchet gear 4121 to rotate, i.e., the blade frame 41 cannot rotate in reverse when the driving sleeve 51 rotates in reverse. So reciprocal, the health intermittent type is hard to make sliding seat 31 along slide rail 111 reciprocating sliding, and blade frame 41 rotates towards same direction, and blade subassembly 2 rotates and stirs the water that is located water tank 13, and the resistance of water has hindered blade subassembly 2's motion to make the user have obvious resistance at gliding in-process backward, make the whole body joint of user obtain the motion. During the rotation of the blade frame 41, the stop posts 92 are simultaneously inserted into the two driven insertion holes 912, so that the two driving gears 91 are relatively fixed, and the driven gears 23 cannot rotate, i.e. the included angle between the upper blade 21 and the lower blade 22 is kept unchanged.

The exercise intensity required by different users is different, and when the exercise intensity of the product is adjusted, the lower part of the corresponding pedal 12 is stepped on by the left heel of the user, so that the pedal 12 rotates to be abutted against the first limit column 1141. The pedal 12 rotates to abut against the pressing rod 812 and drive the pressing rod 812 to slide downwards, and the pressing rod 812 moves downwards to enable the adjusting rod 81 to move downwards, and meanwhile, the second spring 82 compresses. The adjustment rod 81 moves so that the sliding block groove 811 moves downward to move the sliding block head 64 downward, i.e. so that the driving shaft 6 moves downward, the driving shaft 6 moves downward to abut against the stop post 92 and drive the stop post 92 to move downward, and the first spring 93 compresses. When the pedal 12 abuts against the first position-limiting column 1141, the driving shaft 6 moves downward until the pawl 61 is separated from the ratchet gear 4121, the driving insertion column 63 is inserted into the driven insertion hole 912 located above, and meanwhile, the stopping column 92 moves downward until the stopping column is separated from the driven insertion hole 912 located above, so that the driving shaft 6 can drive the driving gear 91 located above to rotate.

Then, the handle 72 is pulled backwards, so that the driving sleeve 51 rotates forwards, the spring 53 stores force, the driving sleeve 51 rotates forwards to drive the driving shaft 6 to rotate forwards, and the driving shaft 6 rotates forwards to drive the driving plug column 63 to drive the driven plug hole 912 located above to rotate so as to drive the driving gear 91 located above to rotate forwards. The driving gear 91 located above rotates positively to drive the driven gear 23 to rotate positively, the driven gear 23 rotates to drive the upper blade 21 to rotate so as to enable the upper synchronizing gear 211 to rotate, the upper synchronizing gear 211 rotates to drive the lower synchronizing gear 221 to rotate so as to enable the lower blade 22 to rotate, and the included angle between the upper blade 21 and the lower blade 22 is reduced along with the positive rotation of the driven gear 23. The area directly opposite to water on the blade assembly 2 rotation direction is reduced, and the resistance of water to the blade assembly 2 is reduced, and the exercise intensity is reduced. Stopping pulling handle 72 for handle 72 moves forward under the spring action of clockwork spring 53, and drive sleeve 51 drives drive shaft 6 antiport, and then makes the drive gear 91 antiport that is located the top, and the drive gear 91 antiport that is located the top drives driven gear 23 antiport, and then makes driven gear 23 antiport, and the contained angle of upper leaf 21 and lower leaf 22 rotates and increases along with driven gear 23 direction. The handle 72 is moved to fine-tune the exercise intensity to meet the exercise intensity requirements of different users.

After the adjustment is completed, the user steps on the lower end of the corresponding pedal 12 with the heel of the left foot, so that the pedal 12 rotates to the original position, and the pressing rod 812 moves upward to the original position under the elastic force of the tension spring 82. The adjusting rod 81 moves upwards to drive the driving shaft 6 to move upwards to the initial position, the pawl 61 is meshed with the ratchet wheel 4121, the driving insertion column 63 is separated from the driven insertion hole 912, the stop column 92 moves upwards under the action of the elastic force of the first spring 93 and is further simultaneously inserted into the two driven insertion holes 912, the two driving gears 91 are relatively fixed, and the exercise is continued according to the steps.

Similarly, the user's right heel steps on the corresponding lower portion of the pedal 12, so that the pedal 12 rotates to abut against the second position-limiting post 1142. The pedal 12 rotates to abut against the pressing rod 812 and drive the adjusting rod 81 to move downwards, and meanwhile, the second spring 82 compresses, and the adjusting rod 81 moves to enable the driving shaft 6 to move downwards. When the pedal 12 abuts against the second limit post 1142, the driving shaft 6 moves downward until the pawl 61 is separated from the ratchet gear 4121, the driving plug post 63 is plugged into the driven plug hole 912 located below, and meanwhile, the stop post 92 moves downward until the pawl is separated from the driven plug hole 912 located above and below, so that the driving shaft 6 can drive the driving gear 91 located below to rotate. Then, pulling the handle 72 backward causes the driving sleeve 51 to drive the driving shaft 6 to rotate in the forward direction, and the spring 53 stores the force, so that the driving shaft 6 rotates in the forward direction to drive the driving gear 91 located below to rotate in the forward direction, and the driving gear 91 located below rotates in the forward direction to drive the driven gear 23 to rotate in the reverse direction. The included angle between the upper blade 21 and the lower blade 22 increases with the rotation of the driven gear 23, i.e. the resistance of water to the blade assembly 2 is increased, i.e. the exercise intensity is increased. The pulling of the knob 72 is stopped, so that the knob 72 moves forward by the elastic force of the clockwork spring 53, and the driving sleeve 51 rotates the driving gear 91 located below in the reverse direction, thereby rotating the driven gear 23 in the forward direction. The included angle between the upper blade 21 and the lower blade 22 is reduced along with the positive rotation of the driven gear 23, and the handle 72 is moved to finely adjust the exercise intensity so as to meet the requirements of different users on the exercise intensity.

After the adjustment is completed, the heel of the right foot of the user steps on the lower end of the corresponding pedal 12, so that the pedal 12 rotates to the original position, the pressing rod 812 moves upwards to the original position under the elastic force of the tension spring 82, meanwhile, the driving shaft 6 moves upwards to the original position, the pawl 61 is meshed with the ratchet gear 4121, the driving plug-in post 63 is separated from the driven plug-in hole 912, the stop post 92 moves upwards under the elastic force of the first spring 93, and then is plugged into the two driven plug-in holes 912 simultaneously, the two driving gears 91 are relatively fixed, the exercise is continued according to the steps, and after the exercise is completed, the pulling rod 71 is placed in the anti-drop groove 1131.

According to the invention, the pedal 12 is arranged, the pedal 12 is rotatably connected in the frame body 11, when physical exercise is carried out, feet step on the pedal 12, along with the reciprocating motion of legs, the pedal 12 rotates at a small angle according to the motion of the legs and is attached to the sole plate of a user, the motion pressure of ankles of the user is reduced, and the injury in the use process is prevented; meanwhile, the pedal 12 rotates at a large angle, the pedal can abut against the pressure lever 812 and enables the pressure lever 812 to move downwards, the driving shaft 6 further moves downwards, the pawl 61 is separated from the ratchet gear 4121, the driving insertion column 63 is inserted into the driven insertion hole 912, meanwhile, the stop column 92 is not simultaneously inserted into the two driven insertion holes 912, the position of the handle 72 is adjusted, so that the included angle between the upper blade 21 and the lower blade 22 is changed, the resistance of water to the blade assembly 2 is adjusted, the exercise intensity is adjusted, and a user does not need to leave the sliding seat 31 and can simply and conveniently complete adjustment.

According to the invention, by arranging the handle 72, when the clamping column 721 is clamped with the first clamping hole 712, the handle 72 is pulled to and fro, so that the blade frame 41 rotates along the axis of the blade frame, the blade assembly 2 stirs water in the water tank 13, the joints of the whole body of a user can be moved, and the whole body can be exercised; when the clamping column 721 is clamped with the second clamping hole 311, the handle 72 is pushed to reciprocate, so that the sliding seat 31 slides to reciprocate, and the waist and abdomen muscles of the user can be exercised.

According to the invention, by arranging the driving shaft 6, when the driving shaft 6 is positioned at the upper limit position, the pawl 61 is meshed with the ratchet gear 4121, the driving shaft 6 rotates to drive the blade frame 41 to synchronously rotate along the axis of the driving shaft, the handle 72 is pulled in a reciprocating manner, and then the blade assembly 2 stirs water in the water tank 13, so that physical exercise can be carried out; when drive shaft 6 moves down to drive peg 63 and peg graft with driven spliced eye 912, pawl 61 and ratchet 4121 separation, the position of adjustment handle 72, and then drive gear 91 rotates, drive gear 91 rotates and drives driven gear 23 and rotate for the contained angle between upper blade 21 and the lower blade 22 changes, thereby adjusted the resistance size of water to blade subassembly 2, adjusted exercise intensity promptly, the user need not to leave the completion adjustment that sliding seat 31 both can be simple and convenient.

Example 2

As shown in fig. 16, the present embodiment is modified from embodiment 1 in the following manner: first clamping holes 712 which can be clamped with the handle 72 are respectively formed at two ends of the pull rod 71 facing the handle 72; a first limiting plate 7121 is formed on one side of the inner wall of the first clamping hole 712, close to the corresponding handle 72; a clamping column 721 capable of being inserted into the corresponding first clamping hole 712 is formed at one end of the handle 72 facing the pull rod 71; a clamping plate 7211 is formed on one side of the outer wall of the clamping column 721 close to the pull rod 71; the clamping plate 7211 can be abutted against the inner bottom end of the first clamping hole 712 and the inner side of the first limiting plate 7121 at the same time; when the click plate 7211 is not aligned with the corresponding first stopper plate 7121, the handle 72 can be inserted into the first click hole 712; when the snap plate 7211 is aligned with the corresponding first stopper plate 7121, the handle 72 and the lever 71 are fixed relative to each other.

Second clamping holes 311 capable of being clamped with the handle 72 are formed in the left end and the right end of the sliding seat 31 respectively; a second limiting plate 3111 is formed on one side of the inner wall of the second clamping hole 311 away from the sliding seat 31; the clamping plate 7211 can be abutted against the inner bottom end of the second clamping hole 311 and the inner side of the second limiting plate 3111 at the same time; when the click plate 7211 is not aligned with the corresponding second stopper plate 3111, the handle 72 can be inserted into the second click hole 311; when the click plate 7211 is aligned with the corresponding second stopper plate 3111, the handle 72 is fixed relative to the slide holder 31.

A ribbon collecting box 33 is arranged at the center of one end of the sliding seat 31 facing the water tank 13; an extension belt 34 is arranged in the tape collecting box 33; an inserting plate 341 is fixedly connected to one end of the extension belt 34 far away from the tape-collecting box 33; a torsion spring for winding the extension belt 34 into the tape-receiving box 33 is arranged between one end of the extension belt 34 away from the plug plate 341 and the tape-receiving box 33; an insertion groove 711 capable of being inserted into the insertion plate 341 is formed at one end of the pull rod 71 away from the towing belt 63.

In the initial state, the click plate 7211 faces the first stopper plate 7121. This product can also carry out the waist abdomen and take exercise, places the horizontal plane with support body 11 on, rotates handle 72 along handle 72 axial and makes joint plate 7211 no longer just right with first limiting plate 7121, takes off two handles 72 respectively in proper order. Then, the handle 72 is held, so that the clamping posts 721 are opposite to the second clamping holes 311, the clamping plate 7211 is staggered with the second limiting plate 3111, the clamping posts 721 are inserted into the second clamping holes 311, the handle 72 is rotated by ninety degrees, so that the clamping plate 7211 is opposite to the second limiting plate 3111, and the other handle 72 is installed in the other second clamping hole 311 in the same step. The hand-held socket plate 341 is pulled out to store the torsion spring, and at the same time, the other hand holds the pull rod 71, and the socket plate 341 is inserted into the socket groove 711, so that the socket plate 341 and the pull rod 71 are fixed relatively, i.e., the towing belt 52 and the extension belt 34 are fixed relatively. The user faces down, straightens the two legs, steps on the frame body 11 with the two feet, holds the handle 72 with the two hands, pushes the handle 72 forward, and slides the sliding seat 31 forward along the sliding rail 111. The sliding seat 31 slides forward to move the extension belt 34 and further the dragging belt 52, so that the driving sleeve 51 rotates forward and the spring 53 stores the torsional force. Subsequently, the handle 72 is pulled backward, so that the shoe 31 slides backward, and the driving sleeve 51 is rotated reversely by the elastic force of the wind spring 53 while the drag belt 52 is wound around the winding pulley 512. So reciprocate, through pushing away pulling handle 72 for sliding seat 31 slides reciprocally, and then makes blade subassembly 2 stir the water motion, makes the waist abdomen obtain taking exercise.

The exercise intensity can be adjusted according to the similar steps in embodiment 1, when the exercise intensity needs to be reduced, the lower portion of the pedal 12 is stepped to enable the pedal 12 to abut against the first limiting column 1141, so that the pawl 61 is separated from the ratchet wheel 4121, the driving insertion column 63 is inserted into the driven insertion hole 912 located above, meanwhile, the stop column 92 moves downwards to be separated from the driven insertion hole 912 located above, the sliding seat 31 is pushed and adjusted to adjust the included angle between the upper blade 21 and the lower blade 22, and the exercise intensity meets the requirements of users. Similarly, when the exercise intensity needs to be improved, the lower portion of the pedal 12 is stepped to enable the pedal 12 to abut against the second limiting column 1141, so that the pawl 61 is separated from the ratchet gear 4121, the driving insertion column 63 is inserted into the driven insertion hole 912 located below, meanwhile, the stop column 92 moves downwards to be separated from the driven insertion hole 912 located below, the sliding seat 31 is pushed and adjusted to adjust the position, so that the exercise intensity meets the requirements of a user by adjusting the included angle between the upper blade 21 and the lower blade 22, and the exercise is continued according to the waist and abdomen exercise steps.

After the exercise is completed, the handles 72 are held and rotated ninety degrees so that the snap plate 7211 is no longer in contact with the second stopper plate 3111 and the handles 72 are removed. The clamping column 721 is aligned to the first clamping hole 712, the clamping plate 7211 is staggered with the first limiting plate 7121, the clamping column 721 is inserted into the first clamping hole 712, the handle 72 is rotated by ninety degrees, the clamping plate 7211 is aligned to the first limiting plate 7121, and the other handle 72 is mounted in the other first clamping hole 712 according to the same steps. The inserting plate 341 is pulled out from the inserting groove 711, the pull rod 71 is placed in the anti-drop groove 1131, the inserting plate 341 is loosened, and the extension belt 34 is wound into the take-up belt box 34 under the elastic force of the torsion spring.

This product both can take exercise as rowing machine and use, and reciprocal pulling handle 72 drives shank joint and both arms joint reciprocating motion, and then makes the health obtain taking exercise, and this product can also regard as the exercise wheel to use simultaneously, reciprocal promotion handle 72 for waist abdomen reciprocating motion, and then makes waist abdomen muscle obtain taking exercise.

Claims

1. A multifunctional rowing machine comprises a frame body, a water tank fixedly connected in the frame body and used for containing water, and a sliding seat connected to the frame body in a sliding manner along the front-back direction and used for a user to sit; the method is characterized in that: the middle part of the water tank is rotationally connected with a blade frame with a rotating shaft longitudinally arranged; a plurality of blade assemblies are uniformly arranged on the blade frame in the water tank along the circumferential direction of the blade frame;

the blade assembly comprises two blades which are longitudinally arranged and are arranged along the radial direction of the blade frame through mutually transmission connected rotating shafts, and a driven gear which is fixedly connected to one end of one blade, facing the rotating shaft of the blade frame, and is coaxially arranged with the rotating shaft of the blade;

the middle part in the blade frame is rotationally connected with two driving gears which are longitudinally arranged on rotating shafts and are respectively in transmission connection with the driven gear; the middle part in the blade frame is longitudinally and slidably connected with a stop column which can be inserted with the two driving gears and can relatively fix the two driving gears;

the driving shaft which is coaxially arranged with the stopping column and can be in one-way transmission connection with the circumferential direction of the blade frame is longitudinally and slidably connected with the middle part in the blade frame; the driving shaft can be fixedly inserted with the driving gear and simultaneously drives the driving gear to synchronously rotate; a dragging belt for driving the driving shaft to rotate is arranged in the frame body;

when the driving shaft is located at the first position, the driving shaft is in one-way transmission connection with the blade frame, and the stop column is inserted into the two driving gears;

when the driving shaft is located at the second position, the driving shaft is not in transmission connection with the blade frame, the driving shaft is inserted into the driving gear located above, and the stop column is only inserted into the driving gear located below;

2. A multi-functional rowing machine in accordance with claim 1, further comprising: an adjusting rod for driving the driving shaft to longitudinally slide is longitudinally and slidably connected in the frame body; two pedals which can drive the adjusting rod to slide downwards are rotatably connected in the frame body, and the pedals are arranged along the left and right directions; when the adjusting rod slides downwards, the driving shaft slides downwards; when the adjusting rod slides upwards, the driving shaft slides upwards.

3. A multi-functional rowing machine in accordance with claim 2, further comprising: two pedal through grooves which are rotatably connected with the middle parts of the corresponding pedals are formed in one end, facing the sliding seat, of the frame body; limiting columns which are arranged along the left and right directions and can be abutted against the corresponding pedals are formed in the pedal through grooves; the two limiting columns comprise a second limiting column positioned above the pedal rotating shaft and a first limiting column positioned above the second limiting column; the left side and the right side of the lower part of the adjusting rod are positioned above the first limiting column, and a pressing rod capable of abutting against the corresponding pedal is formed on the left side and the right side of the lower part of the adjusting rod;

4. A multi-functional rowing machine in accordance with claim 1, further comprising: a driving sleeve for driving the driving shaft to rotate is rotatably connected in the frame body; and a winding wheel for winding the dragging belt is formed on the outer wall of the driving sleeve close to the upper end.

5. A multi-functional rowing machine in accordance with claim 1, further comprising: one end of the dragging belt, which is far away from the driving shaft, is fixedly connected with a pull rod; handles convenient for pulling the pull rod are respectively arranged at the two ends of the pull rod.

6. The multi-functional rowing machine of claim 5, further comprising: two limiting columns which are symmetrically arranged are formed at the front end of the frame body; and the lower end of the limiting column is provided with an anti-falling groove for limiting the movement of the pull rod.

7. A multi-functional rowing machine in accordance with claim 1, further comprising: a plurality of pawls are uniformly formed at the lower part of the outer wall of the driving shaft along the circumferential direction; a ratchet gear which can be in one-way transmission connection with the pawl is formed at the upper part of the blade frame; when the driving shaft is located at the first position, the pawl is in one-way transmission connection with the ratchet gear; when the drive shaft is located at the second position or the third position, the pawl is separated from the ratchet gear.