CN114522376A

CN114522376A - Double-position rowing machine with multiple exercise modes

Info

Publication number: CN114522376A
Application number: CN202210345835.5A
Authority: CN
Inventors: 吕平军
Original assignee: Jiangxi Meida Educational Equipment Group Co ltd
Current assignee: Jiangxi Meida Educational Equipment Group Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-05-24
Anticipated expiration: 2042-04-02
Also published as: CN114522376B

Abstract

The invention belongs to the technical field of rowing machines, and particularly relates to a multi-exercise-mode double-position rowing machine which comprises two rowing machine monomers, wherein a magnetic control resistance module is shared between the two rowing machine monomers; the output ends of the two rowing machine monomers are in transmission connection with the output shaft of the magnetic control resistance module through a differential; the rowing machine designed by the invention is a double-position rowing machine, and the two rowing machines share one magnetic control resistance module, so that on one hand, the cost is greatly reduced; on the other hand, during exercise, the two rowing machines are subjected to magnetic control resistance no matter how fast the rowing machines are, and the specific resistance needs to be configured during the exercise, so that two persons are required to communicate with the amount of the commodity, and interaction is realized during the commodity process; namely, the double-position rowing machine designed by the invention meets the requirements of people on interactive use of fitness equipment.

Description

Double-position rowing machine with multiple exercise modes

Technical Field

The invention belongs to the technical field of rowing machines, and particularly relates to a multi-exercise-mode double-position rowing machine.

Background

Rowing machines are machines used for training purposes to simulate the movement of water racing boats. Indoor racing boat games have become a professional game. Indoor rowing machines, also commonly referred to as dynamometers, measure the power consumed by a sporter in motion. The rowing machine has good effect on strengthening muscles of legs, waists, upper limbs, chests and backs. Every stroke, the upper limbs, the lower limbs, the waist, the abdomen and the back can complete one-time complete contraction and extension in the process, and the aerobic exercise effect of whole body muscles can be achieved. Especially for people with more fat in waist, abdomen and upper arm.

The existing rowing machine comprises a sliding plate, a track, a pull rope and a magnetic control resistance module; the magnetic control resistance module is arranged at the front end of the track, and the sliding plate is arranged on the track in a sliding manner; one end of the pull rope is connected with the magnetic control resistance module, and the other end of the pull rope extends out of the front end of the track and is fixed with a pull rod.

At present, with the popularization of interactive life style and the increasing emphasis on physical exercise of people; the gymnasium becomes a new interaction place; in such situations, the demand for interactive use of exercise equipment is becoming higher and higher; however, the existing rowing machine can only be used by a single person, and a double-station rowing machine used interactively by two persons does not exist.

In addition, the double-position rowing machine can share one magnetic control resistance module in order to reduce the equipment cost; however, when the magnetic resistance module is used together, it needs to be studied how to enable two users to better and independently obtain the resistance provided by the magnetic resistance module, and related products at present are few.

The present invention is directed to a multi-exercise mode bi-position rowing machine that solves the above problems.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme:

a dibit rowing machine with multiple exercise modes comprises two rowing machine single bodies, wherein a magnetic control resistance module is shared between the two rowing machine single bodies; the output ends of the two rowing machine monomers are in transmission connection with the output shaft of the magnetic control resistance module through a differential.

The rowing machine monomer comprises a seat, a frame body, a pedal plate, a pull rod, an installation shell, a slide rail, a winding wheel, a cross universal joint, an adjusting screw rod, a telescopic rotating shaft, a second rotating shaft, a third rotating shaft, a one-way clutch, a rack, a transmission gear, a sliding block and a pull rope, wherein the slide rail is fixedly installed on the upper side of the frame body, and the seat is installed on the slide rail in a sliding manner; two pedals are symmetrically arranged on two sides of the slide rail close to the front end; the front end of the frame body is provided with an installation shell, and the third rotating shaft is rotatably arranged in the installation shell; the winding wheel is arranged on the third rotating shaft through a one-way clutch, and a volute spiral spring is arranged between the winding wheel and the shell; a pull rope is wound on the winding wheel, and one end of the pull rope penetrates out of the front end of the frame body upwards and then is fixedly provided with a pull rod; the sliding block is installed in the installation shell in a vertically sliding mode, and the upper end of the installation shell is rotatably provided with an adjusting screw rod; the adjusting screw rod is in threaded fit connection with the sliding block; the second rotating shaft is rotatably arranged on the sliding block, one end of the second rotating shaft is in transmission connection with the third rotating shaft through two cross universal joints and the telescopic rotating shaft, and the other end of the second rotating shaft is connected with the differential mechanism; the transmission gear is fixedly arranged on the second rotating shaft, the two racks which are distributed up and down are arranged in the mounting shell in a front-back sliding mode, and the two racks are located on the upper side and the lower side of the transmission gear and are matched with the transmission gear; the front ends of the two racks are combined and then connected with the seat.

By rotating the adjusting screw rod, the adjusting screw rod controls the sliding block to slide up and down under the thread matching effect, and further controls whether the transmission gear is meshed with the two racks or not.

Preferably, the two rowing machine units share a mounting case, and the differential is mounted in the mounting case.

The differential mechanism comprises a first gear, a second gear, first rotating shafts, a third support, a third gear and a fourth gear, wherein the first gear is fixedly arranged on an output shaft of the magnetic control damping module; a fourth gear is respectively arranged on the two first rotating shafts; two third supports are symmetrically and fixedly arranged on the end surface of the second gear, and the two third gears are symmetrically and rotatably arranged on the two third supports; the two third gears are respectively meshed with the two fourth gears.

The two first rotating shafts are respectively connected with the second rotating shafts in the two rowing machine monomers through two cross universal joints and telescopic rotating shafts.

Preferably, the mounting shell is mounted on the ground through a first support; the magnetic control resistance module is arranged on the ground through the second support.

Preferably, the front ends of the frame bodies of the two rowing machine units are fixedly provided with an installation cover, and the installation covers cover the corresponding winding wheels.

As preferred scheme, open threaded hole on the sliding block, the threaded connection of threaded hole on one end and the sliding block that adjusting screw stretches into the installation shell.

The mounting shell is provided with a scale.

Preferably, a guide rail for guiding the sliding block is installed in the mounting shell.

Preferably, a guide wheel for guiding the pull rope is installed in the frame body.

Preferably, the two racks in the rowing machine body are combined through a connecting plate; one end of the L-shaped pulling plate is fixedly arranged on the connecting plate, and the other end of the L-shaped pulling plate is fixed on the seat.

Preferably, a guide shell for guiding the L-shaped pulling plate is fixedly mounted on the lower side of the sliding rail.

Compared with the prior art, the invention has the advantages that:

1. the rowing machine designed by the invention is a double-position rowing machine, and the two rowing machines share one magnetic control resistance module, so that on one hand, the cost is greatly reduced; on the other hand, during exercise, the two rowing machines are subjected to magnetic control resistance no matter how fast the rowing machines are, and the specific resistance needs to be configured during the exercise, so that two persons are required to communicate with the amount of the commodity, and interaction is realized during the commodity process; namely, the double-position rowing machine designed by the invention meets the requirements of people on interactive use of fitness equipment.

2. In the invention, if the two racks are not meshed with the transmission gear, the exercise mode of the rowing machine is the same as that of the existing rowing machine; if when the rack that is located the downside and drive gear meshing, the pulling stay cord makes the winding wheel rotatory, and the winding wheel rotation can drive gear rotatory through third pivot, second pivot, cross universal joint and flexible pivot, and the drive gear is rotatory to drive the rack and moves, and the rack removes and drives the seat through connecting plate and L template and move forward, and this kind of mode of taking exercise is just opposite with the mode of taking exercise of current rowing machine. If the rack that is located the upside when meshing with drive gear, the pulling stay cord makes the winding wheel rotatory, the winding wheel rotation can drive gear rotatory through third pivot, the second pivot, cross universal joint and flexible pivot, the drive gear is rotatory to drive the rack and moves, the rack removes and drives the seat through connecting plate and L template and move backward, this kind of mode of taking exercise is the same with the mode of taking exercise of current rowing machine, but under this kind of mode of taking exercise, drive gear's rotation provides certain pulling force for the removal of seat, the power that the buttock dragged seat when taking exercise moved drags seat when current rowing machine is taken exercise relatively will be little for the power that the buttock drags seat to remove, the effect of taking exercise is different with the exercise effect of current rowing machine to shank muscle, be used for the exerciser that shank muscle has the damage. The rowing machine provides three different exercise modes for the rowing machine through the designed transmission gear, the designed rack, the designed connecting plate and the designed L-shaped pulling plate.

Drawings

Fig. 1 is an external view of an integral part.

FIG. 2 is a schematic illustration of a differential installation.

Fig. 3 is a schematic view of the differential structure.

FIG. 4 is a schematic diagram of a magnetically controlled resistance module and differential connection.

Fig. 5 is a schematic view of a winding wheel installation.

Fig. 6 is a schematic view of the installation of the second rotating shaft and the third rotating shaft.

Fig. 7 is a rack and pinion mounting schematic.

Fig. 8 is a schematic view of a pull cord installation.

Fig. 9 is an L-shaped pulling plate installation schematic.

Fig. 10 is a schematic view of the connection of the L-shaped pulling plate with the seat.

FIG. 11 is a slider installation diagram.

Number designation in the figures: 1. a rowing machine unit; 2. a seat; 3. a frame body; 4. a foot pedal; 5. a pull rod; 6. mounting a shell; 7. a magnetic control resistance module; 8. a slide rail; 9. a differential mechanism; 10. a first support; 11. a second support; 12. an output shaft; 13. a first gear; 14. a second gear; 15. a first rotating shaft; 16. a third support; 17. a third gear; 18. a fourth gear; 19. a winding wheel; 20. a cross universal joint; 21. adjusting the screw rod; 22. a telescopic rotating shaft; 23. a second rotating shaft; 24. a third rotating shaft; 25. a one-way clutch; 26. mounting a cover; 27. a rack; 28. a transmission gear; 29. a threaded hole; 30. a slider; 31. a guide rail; 32. a connecting plate; 33. an L-shaped pulling plate; 34. pulling a rope; 35. a guide wheel; 36. a guide housing; 37. a spiral spring.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must be of a particular length, orientation, configuration and operation in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, it comprises two rowing machine units 1, and a magnetic control resistance module 7 is shared between the two rowing machine units 1; as shown in FIG. 2, the output ends of the two rowing machine units 1 are in transmission connection with an output shaft 12 of the magnetic control resistance module 7 through a differential 9.

The rowing machine designed by the invention is a double-position rowing machine, and the two rowing machines share one magnetic control resistance module 7, so that on one hand, the cost is greatly reduced; on the other hand, during exercise, the two rowing machines are subjected to magnetic control resistance no matter how fast the rowing machines are, and the specific resistance needs to be configured during the exercise, so that two persons are required to communicate with the amount of the commodity, and interaction is realized during the commodity process; namely, the double-position rowing machine designed by the invention meets the requirements of people on interactive use of fitness equipment.

As shown in fig. 8 and 9, the rowing machine unit 1 includes a seat 2, a frame 3, a pedal 4, a pull rod 5, a mounting case 6, a sliding rail 8, a winding wheel 19, a cross universal joint 20, an adjusting screw 21, a telescopic rotating shaft 22, a second rotating shaft 23, a third rotating shaft 24, a one-way clutch 25, a rack 27, a transmission gear 28, a sliding block 30, and a pull rope 34, wherein the sliding rail 8 is fixedly mounted on the upper side of the frame 3, and the seat 2 is slidably mounted on the sliding rail 8; two pedals 4 are symmetrically arranged on two sides of the slide rail 8 close to the front end; as shown in fig. 2 and 3, a mounting case 6 is mounted at the front end of the frame body 3, as shown in fig. 5 and 6, a third rotating shaft 24 is rotatably mounted in the mounting case 6, a winding wheel 19 is mounted on the third rotating shaft 24 through a one-way clutch 25, and as shown in fig. 7, a spiral spring 37 is mounted between the winding wheel 19 and the housing; a pull rope 34 is wound on the winding wheel 19, and one end of the pull rope 34 penetrates out of the front end of the frame body 3 upwards and then is fixedly provided with a pull rod 5; as shown in fig. 5 and 6, the sliding block 30 is installed in the installation shell 6 in a vertical sliding manner, and the upper end of the installation shell 6 is rotatably installed with the adjusting screw 21; the adjusting screw 21 is in threaded fit connection with the sliding block 30; as shown in fig. 6, the second rotating shaft 23 is rotatably mounted on the sliding block 30, one end of the second rotating shaft 23 is in transmission connection with the third rotating shaft 24 through two universal joints 20 and the telescopic rotating shaft 22, and as shown in fig. 5, the other end of the second rotating shaft 23 is connected with the differential 9; as shown in fig. 7, the transmission gear 28 is fixedly installed on the second rotating shaft 23, as shown in fig. 11, two racks 27 distributed up and down are installed in the installation housing 6 in a front-back sliding manner, as shown in fig. 8 and 10, the two racks 27 are located on the upper and lower sides of the transmission gear 28 and are matched with the transmission gear 28; the front ends of the two racks 27 are merged and then connected to the seat 2.

The seat 2, the frame body 3, the pedal plate 4, the pull rod 5, the slide rail 8 and the pull rope 34 are all products existing in the existing rowing machine.

The design of wrap spring 37 is such that it acts to return winding wheel 19, i.e. to return pull cord 34. When the pull rope 34 is pulled to enable the pull rope 34 to drive the winding wheel 19 to rotate, the winding wheel 19 can drive the third rotating shaft 24 to rotate through the one-way clutch 25, the third rotating shaft 24 rotates to drive the corresponding second rotating shaft 23 to rotate through the corresponding cross universal joint 20 and the corresponding telescopic rotating shaft 22, the second rotating shaft 23 rotates to drive the transmission gear 28 to rotate, and the corresponding first rotating shaft 15 can be driven to rotate through the cross universal joint 20 and the corresponding telescopic rotating shaft 22.

The one-way clutch 25 is designed in the invention, so that when the winding wheel 19 is driven to rotate by the pull rope 34, the winding wheel 19 can drive the corresponding third rotating shaft 24 to rotate through the one-way clutch 25, and when the winding wheel 19 is reset under the action of the spiral spring 37, the winding wheel 19 cannot drive the second rotating shaft 23 to rotate reversely due to the existence of the one-way clutch 25, namely, the operation of the differential 9 and the magnetic control resistance module 7 is not influenced.

By rotating the adjusting screw 21, the adjusting screw 21 controls the sliding block 30 to slide up and down under the action of thread fit, and further controls whether the transmission gear 28 is meshed with the two racks 27 or not.

As shown in fig. 2 and 3, the two rowing machine units 1 share a mounting case 6, and a differential 9 is mounted in the mounting case 6.

As shown in fig. 3 and 4, the differential 9 includes a first gear 13, a second gear 14, a first rotating shaft 15, a third support 16, a third gear 17, and a fourth gear 18, wherein the first gear 13 is fixedly mounted on the output shaft 12 of the magnetically controlled damping module, two first rotating shafts 15 are rotatably mounted in the mounting case 6, one of the two first rotating shafts 15 is mounted with the second gear 14, and the second gear 14 is meshed with the first gear 13; a fourth gear 18 is respectively arranged on the two first rotating shafts 15; two third supports 16 are symmetrically and fixedly arranged on the end surface of the second gear 14, and two third gears 17 are symmetrically and rotatably arranged on the two third supports 16; the two third gears 17 are engaged with the two fourth gears 18, respectively.

As shown in fig. 5, the two first rotating shafts 15 are connected to the second rotating shaft 23 of the two rowing machine units 1 through two universal joints 20 and a telescopic rotating shaft 22, respectively.

As shown in fig. 3, the mounting case 6 is mounted on the ground by a first support 10; the magnetic control resistance module 7 is installed on the ground through a second support 11.

As shown in fig. 6 and 7, the front ends of the frame bodies 3 of the two rowing machine units 1 are fixedly provided with a mounting cover 26, and the mounting covers 26 cover the corresponding winding wheels 19.

As shown in fig. 7, the sliding block 30 is provided with a threaded hole 29, and one end of the adjusting screw 21 extending into the mounting shell 6 is in threaded connection with the threaded hole 29 on the sliding block 30.

The mounting housing 6 has a scale thereon. By means of the scale it can be determined which position the drive gear 28 is in particular, which facilitates a better adjustment of the exercise pattern.

As shown in fig. 7, a guide rail 31 for guiding the slide block 30 is installed in the mounting case 6.

As shown in fig. 8, a guide wheel 35 for guiding the pull rope 34 is installed in the frame body 3.

As shown in fig. 10, the two racks 27 in the rowing machine body are merged by one connecting plate 32; one end of the L-shaped pulling plate 33 is fixedly installed on the connecting plate 32, and the other end of the L-shaped pulling plate 33 is fixed on the seat 2.

As shown in fig. 10, a guide shell 36 for guiding the L-shaped pulling plate 33 is fixedly mounted on the lower side of the sliding rail 8.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

The implementation mode is as follows: when the rowing machine designed by the invention is used for exercise, the pull rod 5 pulls the pull rope 34, so that when the pull rope 34 drives the winding wheel 19 to rotate, the winding wheel 19 can drive the third rotating shaft 24 to rotate through the one-way clutch 25, the third rotating shaft 24 rotates to drive the corresponding second rotating shaft 23 to rotate through the corresponding cross universal joint 20 and the corresponding telescopic rotating shaft 22, the second rotating shaft 23 rotates to drive the transmission gear 28 to rotate on one hand, and the corresponding first rotating shaft 15 can be driven to rotate through the cross universal joint 20 and the corresponding telescopic rotating shaft 22 on the other hand; when the first rotating shafts 15 rotate, if the rotating speeds of the two corresponding first rotating shafts 15 of the two rowing machine units 1 are the same, the two first rotating shafts 15 can simultaneously drive the fourth gears 18 mounted thereon to rotate, the fourth gears 18 rotate to stir the two third gears 17 to revolve around the axis of the second gear 14 through tooth matching, the two third gears 17 revolve to drive the second gear 14 to rotate, the second gear 14 rotates to drive the first gear 13 to rotate, and further the output shaft 12 of the magnetic control resistance module 7 is driven to rotate; in this state, the two persons exercising on the two rowing machine units 1 pull the pulling rope 34 so that the winding wheels 19 rotate at substantially the same speed, the magnetic resistance modules 7 output substantially the same resistance, and the two persons pull the pulling rope 34 substantially the same resistance.

When only one person exercises on the two rowing machine units 1, the first rotating shaft 15 corresponding to the used rowing machine unit 1 drives the two third gears 17 to rotate through the fourth gear 18, the two third gears 17 rotate and revolve around the fourth gear 18 corresponding to the first rotating shaft 15 which does not rotate, the two third gears 17 revolve around the second gear 14 driven by the two third supports 16, and the second gear 14 rotates to drive the first gear 13 to rotate, so that the output shaft 12 of the magnetic control resistance module 7 is driven to rotate; in this state, the magnetically controlled resistance module 7 provides resistance only to the rowing machine unit 1 being used.

When two rowing machine units 1 exercise simultaneously and two persons pull the pulling ropes 34 to make the winding wheels 19 rotate at different speeds, the first rotating shaft 15 with the high rotation speed drives the two third gears 17 to rotate through the fourth gear 18, the two third gears 17 revolve around the fourth gear 18 corresponding to the first rotating shaft 15 with the low speed while rotating, and the first rotating shaft 15 with the low speed rotates to provide extra rotation force for the revolution of the two third gears 17 through the fourth gear 18 on the first rotating shaft 15 with the low speed, so that the revolution speed of the two third gears 17 is greater than the speed at which only the first rotating shaft 15 with the high speed drives the two third gears 17 to rotate, and in this state, the resistance provided by the magnetic control resistance module 7 is the superposition of the resistances borne by the two rowing machine units 1; i.e. the magnet hole resistance module provides resistance to both rowing machine cells 1 in this state.

In the invention, the adjusting screw 21 is rotated to control the up-and-down movement of the sliding speed, thereby controlling whether the transmission gear 28 is meshed with the rack 27 or not or which rack 27 is meshed with the transmission gear; if both racks 27 are in a state where they are not engaged with the driving gear 28, the exercise mode of the rowing machine is identical to that of the existing rowing machine at this time; if the rack 27 located at the lower side is engaged with the pinion 28, the winding wheel 19 is rotated by pulling the pulling rope 34, the rotation of the winding wheel 19 rotates the pinion 28 through the third rotating shaft 24, the second rotating shaft 23, the universal joint 20 and the telescopic rotating shaft 22, the rotation of the pinion 28 drives the rack 27 to move, and the rack 27 moves through the connecting plate 32 and the L-shaped plate to drive the seat 2 to move forward, which is the opposite of the exercise mode of the conventional rowing machine. If the rack 27 located at the upper side is meshed with the transmission gear 28, the winding wheel 19 is rotated by pulling the pull rope 34, the winding wheel 19 rotates to drive the transmission gear 28 to rotate through the third rotating shaft 24, the second rotating shaft 23, the universal joint 20 and the telescopic rotating shaft 22, the transmission gear 28 rotates to drive the rack 27 to move, the rack 27 moves to drive the seat 2 to move backwards through the connecting plate 32 and the L-shaped plate, although the exercise mode is the same as that of the existing rowing machine, in the exercise mode, the rotation of the transmission gear 28 provides a certain pulling force for the movement of the seat 2, the force for dragging the seat 2 to move by the buttocks during exercise is smaller than that for dragging the seat 2 to move by the buttocks during the exercise of the existing rowing machine, and the exercise effect is different from that of the existing rowing machine. The invention provides three different exercise modes for the rowing machine through the designed transmission gear 28, the designed rack 27, the designed connecting plate 32 and the designed L-shaped pulling plate 33. In the present invention, if both the racks 27 are in a state where they are not engaged with the driving gear 28, the exercise mode of the rowing machine at this time is the same as that of the existing rowing machine; if the rack 27 located at the lower side is engaged with the pinion 28, the winding wheel 19 is rotated by pulling the pulling rope 34, the rotation of the winding wheel 19 rotates the pinion 28 through the third rotating shaft 24, the second rotating shaft 23, the universal joint 20 and the telescopic rotating shaft 22, the rotation of the pinion 28 drives the rack 27 to move, and the rack 27 moves through the connecting plate 32 and the L-shaped plate to drive the seat 2 to move forward, which is the opposite of the exercise mode of the conventional rowing machine. If the rack 27 positioned at the upper side is meshed with the transmission gear 28, the winding wheel 19 rotates by pulling the pull rope 34, the winding wheel 19 rotates to drive the transmission gear 28 to rotate through the third rotating shaft 24, the second rotating shaft 23, the universal joint cross 20 and the telescopic rotating shaft 22, the transmission gear 28 rotates to drive the rack 27 to move, the rack 27 moves to drive the seat 2 to move backwards through the connecting plate 32 and the L-shaped plate, the exercise mode is the same as that of the existing rowing machine, but in the exercise mode, the rotation of the transmission gear 28 provides certain pulling force for the movement of the seat 2, the force for dragging the seat 2 to move by the buttocks during exercise is smaller than that for dragging the seat 2 to move by the buttocks during the exercise of the existing rowing machine, and the exercise effect is different from that of the existing rowing machine. The invention provides three different exercise modes for the rowing machine through the designed transmission gear 28, the designed rack 27, the designed connecting plate 32 and the designed L-shaped pulling plate 33.

Claims

1. A multi-exercise mode dibit rowing machine, comprising: the rowing machine comprises two rowing machine monomers, wherein a magnetic control resistance module is shared between the two rowing machine monomers; the output ends of the two rowing machine monomers are in transmission connection with the output shaft of the magnetic control resistance module through a differential;

the rowing machine monomer comprises a seat, a frame body, a pedal plate, a pull rod, an installation shell, a slide rail, a winding wheel, a cross universal joint, an adjusting screw rod, a telescopic rotating shaft, a second rotating shaft, a third rotating shaft, a one-way clutch, a rack, a transmission gear, a sliding block and a pull rope, wherein the slide rail is fixedly installed on the upper side of the frame body, and the seat is installed on the slide rail in a sliding manner; two pedals are symmetrically arranged on two sides of the slide rail close to the front end; the front end of the frame body is provided with an installation shell, and the third rotating shaft is rotatably arranged in the installation shell; the winding wheel is arranged on the third rotating shaft through a one-way clutch, and a volute spiral spring is arranged between the winding wheel and the shell; a pull rope is wound on the winding wheel, and one end of the pull rope penetrates out of the front end of the frame body upwards and then is fixedly provided with a pull rod; the sliding block is installed in the installation shell in a vertically sliding mode, and the upper end of the installation shell is rotatably provided with an adjusting screw rod; the adjusting screw rod is in threaded fit connection with the sliding block; the second rotating shaft is rotatably arranged on the sliding block, one end of the second rotating shaft is in transmission connection with the third rotating shaft through two cross universal joints and the telescopic rotating shaft, and the other end of the second rotating shaft is connected with the differential mechanism; the transmission gear is fixedly arranged on the second rotating shaft, the two racks which are distributed up and down are arranged in the mounting shell in a front-back sliding mode, and the two racks are located on the upper side and the lower side of the transmission gear and are matched with the transmission gear; the front ends of the two racks are combined and then connected with a seat;

2. The multi-exercise mode dibit rowing machine of claim 1, wherein: the two rowing machine monomers share one mounting shell, and the differential is mounted in the mounting shell;

the differential mechanism comprises a first gear, a second gear, first rotating shafts, a third support, a third gear and a fourth gear, wherein the first gear is fixedly arranged on an output shaft of the magnetic control damping module; a fourth gear is respectively arranged on the two first rotating shafts; two third supports are symmetrically and fixedly arranged on the end surface of the second gear, and the two third gears are symmetrically and rotatably arranged on the two third supports; the two third gears are respectively meshed with the two fourth gears;

3. The multi-exercise mode dibit rowing machine of claim 1, wherein: the mounting shell is mounted on the ground through a first support; the magnetic control resistance module is arranged on the ground through the second support.

4. The multi-exercise mode dibit rowing machine of claim 1, wherein: the front ends of the frame bodies of the two rowing machine monomers are fixedly provided with an installation cover, and the installation cover covers the corresponding winding wheel.

5. The multi-exercise mode dibit rowing machine of claim 1, wherein: the sliding block is provided with a threaded hole, and one end of the adjusting screw rod extending into the mounting shell is in threaded connection with the threaded hole on the sliding block;

the mounting shell is provided with a scale.

6. The multi-exercise mode dibit rowing machine of claim 1, wherein: and a guide rail for guiding the sliding block is arranged in the mounting shell.

7. The multi-exercise mode dibit rowing machine of claim 1, wherein: the frame body is internally provided with a guide wheel which plays a role in guiding the pull rope.

8. The multi-exercise mode dibit rowing machine of claim 1, wherein: the two racks in the rowing machine body are combined through a connecting plate; one end of the L-shaped pulling plate is fixedly arranged on the connecting plate, and the other end of the L-shaped pulling plate is fixed on the seat.

9. The multi-exercise mode dibit rowing machine of claim 8, wherein: and a guide shell which plays a role in guiding the L-shaped pulling plate is fixedly arranged on the lower side of the sliding rail.