CN114534175A

CN114534175A - Stable rowing machine

Info

Publication number: CN114534175A
Application number: CN202111656406.1A
Authority: CN
Inventors: 柯赛; 林波
Original assignee: Zhejiang Jintuo Mechanical And Electrical Co ltd
Current assignee: Zhejiang Jintuo Mechanical And Electrical Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-27
Anticipated expiration: 2041-12-30
Also published as: CN114534175B

Abstract

The invention discloses a stable rowing machine which comprises a main body plate, wherein a cushion is slidably mounted on the upper surface of the main body plate, supporting columns are symmetrically mounted on two sides of the lower portion of the main body plate, a cross beam fixedly connected with the main body plate is mounted between every two opposite supporting columns, a moving wheel is movably mounted at the lower end of each supporting column, and a transmission assembly used for driving the moving wheel to ascend and descend is arranged inside each supporting column. According to the invention, through the arrangement of the through groove, the sliding seat, the cushion, the traction rope and the balancing weight, the stability of the equipment in use is improved, when a user drives the cushion to move, the traction rope realizes reverse movement of the balancing weight under the action of the guide pulley, so that the gravity center of the equipment is changed, and the stability of the equipment is improved; the lifting frame is driven to descend through the transmission assembly, so that the movable wheels can extend out of the supporting column, the equipment can be moved conveniently, and the convenience is brought to a user.

Description

Stable rowing machine

Technical Field

The invention relates to the technical field of fitness equipment, in particular to a stable rowing machine.

Background

The rowing machine is a machine for simulating water rowing sports, the indoor rowing machine is also commonly called a dynamometer (commonly called ERGO or ERGO abroad), measures the power consumed by a sporter in sports, has a good effect on strengthening muscles of legs, waist, upper limbs, breasts and back, can complete contraction and extension in the process every time of rowing, and can achieve a whole body muscle aerobic exercise effect, and particularly brings unexpected body shaping effect to people in people with more fat in waist, abdomen and upper arms, and the rowing machine is mainly divided into 5 types according to different types of resistance: a water resistance rowing machine, a wind resistance rowing machine, a magnetic control rowing machine, a fan magnetic control double resistance rowing machine and a hydraulic resistance rowing machine.

The hydraulic resistance rowing machine has a simple structure, a small resistance system, and the net weight of most hydraulic resistance rowing machines is no more than 20kg, so the training effect of the equipment is limited, and the training of hip muscle groups cannot be realized, and because the connecting rod device is usually connected with the base, the stability is reduced when the action is severe, and the safety performance of the equipment is reduced, for example, Chinese patent application No. (CN201821032665.0) discloses a rowing machine based on an electrorheological fluid damping device, the structure can realize the stepless regulation of the damping force by regulating the voltage/current of the electrorheological fluid damping device through a controller, the structure is simple, the regulation is convenient, the rowing machine is suitable for different people, but the stability of the equipment is poor, the safety performance of the equipment when in use is reduced, the equipment cannot realize the hip training, and the practicability of the equipment is reduced;

in addition, the current rowing machine usually moves the degree of difficulty after the installation big, like chinese patent application number (CN201811088459.6) has announced a rowing machine for body-building amusement, this structural function is various, can satisfy sit up and simulate rowing and take exercise simultaneously, but this structure is when using, and the flexibility of equipment is poor, needs two people to make a concerted effort to carry during the removal usually, wastes time and energy.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a stable rowing machine, which solves the problems that the hydraulic resistance rowing machine is poor in stability and cannot train hip muscles by arranging the balancing weight connected with the cushion below the main body plate, improves the flexibility of equipment by optimizing the supporting structure of the base, and is convenient to carry and move.

The invention specifically adopts the following technical scheme for realizing the purpose:

the utility model provides a stabilize rowing machine, includes the main part board, slidable mounting has the cushion on the main part board, and the support column is installed to the below bilateral symmetry of main part board, installs the crossbeam with main part board fixed connection between two relative support columns, its characterized in that: the middle part position department of main part board has seted up logical groove, the inside slidable mounting that leads to the groove has the slide with cushion fixed connection, and leads to the one end of groove and install the leading pulley, the inside that leads to the groove is located slidable mounting between leading pulley and the slide and has the balancing weight, install the haulage rope with the leading pulley adaptation between balancing weight and the slide.

Furthermore, the lower extreme movable mounting of support column has the removal wheel, the inside of support column is equipped with the transmission assembly who is used for the drive to remove the wheel and goes up and down.

Furthermore, the transmission assembly comprises a linkage shaft rotatably mounted in the beam, two ends of the linkage shaft extend into the support column and are provided with first bevel gears, a partition plate is mounted in the middle of the inside of the support column, a threaded sleeve is rotatably mounted on the partition plate, a second bevel gear meshed with the first bevel gear is mounted at the upper end of the threaded sleeve, a threaded lifting rod is connected in the threaded sleeve through threads, and one end of the linkage shaft penetrates through the support column and is provided with a knob;

or the transmission assembly comprises an electric telescopic rod fixedly arranged in the support column, and the upper end of the electric telescopic rod is connected with the top end in the support column in a welding manner; preferably, the number of the electric telescopic rods is four.

Further, the crane of being connected with the removal wheel rotation is installed to transmission assembly's output, the limiting plate is installed to the bilateral symmetry of crane, the inner wall symmetry of support column offer with limiting plate sliding connection's spacing groove.

Further, the lower extreme of main part board is close to middle part position department and installs the connecting plate, the spring is installed to the symmetry between connecting plate and the balancing weight.

Furthermore, the bottom of logical groove has seted up the spout, the inside slidable mounting of spout has with balancing weight upper end fixed connection's T type slider.

Furthermore, a rear supporting plate is rotatably arranged at one end of the main body plate, foot pads are symmetrically and rotatably arranged at the other end of the main body plate above the cross beam, and elastic binding bands are arranged at the middle sections of the foot pads; preferably, the surface of the foot pad is provided with anti-skidding teeth.

Furthermore, rocker arms are symmetrically and movably mounted on one of the cross beams, hydraulic dampers are symmetrically and movably mounted on the other cross beam, and the telescopic ends of the hydraulic dampers are connected with the rocker arms through hinges.

Furthermore, universal joints are arranged at the connecting part of the cross beam and the rocker arm and the connecting part of the cross beam and the hydraulic damper.

Further, the upper end of rocking arm is equipped with the ball groove, and the upper end movable mounting of rocking arm has the linking arm, rotate on the linking arm and install the handle, and the lower extreme of linking arm install with the spheroid of ball groove adaptation.

Compared with the prior art, the stable rowing machine provided by the invention has the following beneficial effects:

1. according to the invention, through the arrangement of the through groove, the sliding seat, the cushion, the traction rope and the balancing weight, the stability of the equipment in use is improved, when a user drives the cushion to move, the traction rope realizes reverse movement of the balancing weight under the action of the guide pulley, so that the gravity center of the equipment is changed, the phenomenon of 'heavy head and light feet' is avoided, and the stability of the equipment is improved;

2. the invention is favorable for the reset of the balancing weight by the traction of the spring, and the resistance of the cushion during the movement is improved under the tension of the spring and the balancing weight, thereby improving the training effect of the equipment and being favorable for the training of the hip muscle group of a user;

3. drive the crane through drive assembly and descend to be favorable to removing the wheel and stretch out from the support column is inside, thereby be favorable to the removal of equipment, the person of facilitating the use promotes, makes the crane rise through drive assembly, thereby be favorable to removing accomodating of wheel, stability when then having improved equipment and placing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary and that other implementation drawings may be derived from the drawings provided to one of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, shall fall within the scope covered by the technical contents disclosed in the present invention.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the universal joint of the present invention;

FIG. 3 is a schematic view of a footpad in the present invention;

FIG. 4 is a schematic view of the internal structure of the support column of the present invention;

FIG. 5 is an enlarged schematic view of the invention at A of FIG. 4;

FIG. 6 is a schematic view of the driving structure of the electric telescopic rod of the present invention;

FIG. 7 is a schematic view of the mounting structure of the handle of the present invention;

FIG. 8 is a schematic view of the installation structure of the seat cushion of the present invention;

FIG. 9 is a schematic view of a cushion according to the present invention;

FIG. 10 is a schematic drawing of a traction structure of the weight member of the present invention;

FIG. 11 is an enlarged schematic view of the invention at B of FIG. 10;

fig. 12 is a schematic structural view of a weight member according to the present invention.

In the figure: 1. a main body plate; 2. a cushion; 3. a foot pad; 4. a cross beam; 5. a support pillar; 6. a rocker arm; 7. A hydraulic damper; 8. a universal joint; 9. a handle; 10. a moving wheel; 11. a linkage shaft; 12. a first bevel gear; 13. a partition plate; 14. a threaded bushing; 15. a second bevel gear; 16. a lifting frame; 17. a limiting plate; 18. a limiting groove; 19. a threaded lifting rod; 20. an electric telescopic rod; 21. a connecting arm; 22. a sphere; 23. a ball groove; 24. a through groove; 25. a slide base; 26. a rear support plate; 27. a connecting plate; 28. a balancing weight; 29. a spring; 30. a hauling rope; 31. a T-shaped slider; 32. a chute; 33. a guide pulley.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention is further described in detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

In the description of the present invention, the terms "comprises/comprising," "consisting of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.

It is to be understood that, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," "secured," and the like are intended to be inclusive and mean, for example, that any suitable arrangement may be utilized and that any suitable connection, whether permanent or removable, or integral, may be utilized; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "center," and the like are used in an orientation or positional relationship illustrated in the drawings for convenience in describing and simplifying the invention, and do not indicate or imply that the device, component, or structure being referred to must have a particular orientation, be constructed in a particular orientation, or be operated in a particular manner, and should not be construed as limiting the invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The following describes the implementation of the present invention in detail with reference to preferred embodiments.

Example 1

As shown in fig. 1 to 12, a stable rowing machine according to an embodiment of the present invention includes a main body plate 1, a seat cushion 2 is slidably installed on an upper surface of the main body plate 1, support columns 5 are symmetrically installed on both sides of a lower portion of the main body plate 1, a cross beam 4 fixedly connected to the main body plate 1 is installed between the two support columns 5, a through groove 24 is formed in a middle portion of the main body plate 1, a slide carriage 25 fixedly connected to the seat cushion 2 is slidably installed inside the through groove 24, a guide pulley 33 is installed at one end of the through groove 24, a weight block 28 is slidably installed inside the through groove 24 between the guide pulley 33 and the slide carriage 25, a traction rope 30 adapted to the guide pulley 33 is installed between the weight block 28 and the slide carriage 25, when a user uses the stable rowing machine, buttocks are seated on the seat cushion 2, both feet are placed on the foot cushion 3, the seat cushion 2 moves backward under the sliding connection between the slide carriage 25 and the through groove 24, make then the focus of equipment change, slide 25 stimulates haulage rope 30 when removing, under the setting of leading pulley 33, change haulage rope 30's pulling force direction, thereby make balancing weight 28 remove, further make balancing weight 28 opposite with the moving direction of cushion 2, further avoid the focus of equipment to change, stability when the improve equipment uses, under the pulling force effect of spring 29 and balancing weight 28, resistance when improving cushion 2 motion, thereby the training effect of improve equipment, be favorable to the training of user's buttock muscle crowd.

The invention further comprises a movable wheel 10 movably arranged at the lower end of the support column 5, and a transmission assembly for driving the movable wheel 10 to ascend and descend is arranged in the support column 5. As shown in fig. 4 and 5, in some embodiments, the transmission assembly includes a linkage shaft 11 rotatably installed inside the cross beam 4, both ends of the linkage shaft 11 extend into the support column 5 and are provided with a first bevel gear 12, a partition plate 13 is installed at a middle position inside the support column 5, installation of a threaded sleeve 14 is facilitated through arrangement of the partition plate 13, a threaded sleeve 14 is rotatably installed on the partition plate 13, a second bevel gear 15 meshed with the first bevel gear 12 is installed at an upper end of the threaded sleeve 14, a threaded lifting rod 19 is connected inside the threaded sleeve 14 through a thread, one end of the linkage shaft 11 penetrates through the support column 5 and is provided with a knob, the knob is pulled to rotate the linkage shaft 11, so that the first bevel gear 12 rotates, the threaded sleeve 14 rotates through meshing between the first bevel gear 12 and the second bevel gear 15, and the threaded sleeve 14 rotates through threaded connection between the threaded sleeve 14 and the threaded lifting rod 19, the lifting of the thread lifting rod 19 is realized, and the lifting frame 16 drives the moving wheel 10 to lift.

As shown in fig. 4, 5 and fig. 6, in some embodiments, the output end of the transmission assembly is provided with a lifting frame 16 rotatably connected with the movable wheel 10, the two sides of the lifting frame 16 are symmetrically provided with limiting plates 17, the inner wall of the support column 5 is symmetrically provided with limiting grooves 18 connected with the limiting plates 17 in a sliding manner, and through the sliding connection between the limiting grooves 18 and the limiting plates 17, the stability of the lifting frame 16 during movement is improved, so that the movable wheel 10 can be conveniently extended (accommodated) from the inside of the support column 5, the movement (fixation) of the equipment is facilitated, and the convenience is brought to users.

As shown in fig. 8 and 10, in some embodiments, the lower end of the main body plate 1 is close to the middle position and is provided with the connecting plate 27, which is mainly beneficial to the installation of the spring 29, so as to realize the limit of the counterweight block 28, the spring 29 is symmetrically installed between the connecting plate 27 and the counterweight block 28, which is beneficial to the restoration of the counterweight block 28 after the movement, and can also improve the resistance of the cushion 2 during the use and improve the training effect of the hip muscle group of the user.

As shown in fig. 10 and 12, in some embodiments, a sliding groove 32 is formed at the bottom of the through groove 24, a T-shaped sliding block 31 fixedly connected with the upper end of the counterweight block 28 is slidably installed inside the sliding groove 32, and the stability of the movement of the counterweight block 28 is improved by the sliding connection between the T-shaped sliding block 31 and the sliding groove 32.

As shown in fig. 1 and 3, in some embodiments, the one end of main part board 1 is rotated and is installed back backup pad 26, be favorable to the support of equipment, be connected through the rotation between back backup pad 26 and the main part board 1, backup pad 26 accomodate after the convenience, expand, and the top symmetry that the other end of main part board 1 is located crossbeam 4 rotates and installs callus on the sole 3, the angle modulation of callus on the sole 3 of being convenient for, the surface of callus on the sole 3 is equipped with anti-skidding tooth, mainly realize the antiskid of callus on the sole 3, and the middle section position department of callus on the sole 3 installs the elasticity bandage, through the setting of elasticity bandage, realize the spacing of foot, it is fixed.

As shown in fig. 1, in some embodiments, the rocker arms 6 are symmetrically and movably mounted on one of the cross beams 4, the hydraulic dampers 7 are symmetrically and movably mounted on the other cross beam 4, so as to mainly provide a stable resistance source for the equipment, and the telescopic ends of the hydraulic dampers 7 are connected with the rocker arms 6 through hinges, so as to facilitate the movement of the rocker arms 6.

As shown in fig. 1 and 2, in some embodiments, universal joints 8 are mounted at the joints of the cross beam 4 and the rocker arms 6 and at the joints of the cross beam 4 and the hydraulic dampers 7, which are beneficial to the multidirectional movement of the rocker arms 6, so that the effect of simulating rowing by the equipment is more real.

As shown in fig. 1 and 7, in some embodiments, a ball groove 23 is formed in the upper end of the swing arm 6, a connecting arm 21 is movably mounted at the upper end of the swing arm 6, a handle 9 is rotatably mounted on the connecting arm 21, a ball 22 adapted to the ball groove 23 is mounted at the lower end of the connecting arm 21, and the handle 9 is rotated in multiple directions through the rotational connection between the handle 9 and the connecting arm 21 and the ball-and-socket connection between the ball 22 and the ball groove 23, so that the effect of simulating rowing by the apparatus is more realistic.

In this embodiment: when the user uses, the buttocks is seated on the cushion 2, two feet are placed on the foot pad 3, the limitation and fixation of the feet are realized through the arrangement of the elastic bandage, the pulling handle 9, the effect of simulating rowing of the equipment is more real through the rotary connection between the handle 9 and the connecting arm 21 and the ball socket connection between the ball 22 and the ball groove 23, the cushion 2 is further enabled to move backwards under the sliding connection between the sliding seat 25 and the through groove 24, the gravity center of the equipment is further enabled to change, the sliding seat 25 pulls the traction rope 30 when moving, under the arrangement of the guide pulley 33, the tension direction of the traction rope 30 is changed, the balancing weight 28 is enabled to move, the stability of the movement of the balancing weight 28 is improved through the sliding connection between the T-shaped sliding block 31 and the sliding groove 32 and the tension action of the spring 29, and the moving directions of the balancing weight 28 and the cushion 2 are opposite, further avoiding the change of the gravity center of the equipment, improving the stability of the equipment when in use, improving the resistance of the cushion 2 when in motion under the action of the pulling force of the spring 29 and the balancing weight 28, thereby improving the training effect of the equipment, being beneficial to the training of the hip muscle group of a user, stirring the knob to rotate the universal driving shaft 11, further rotating the first bevel gear 12, rotating the threaded sleeve 14 through the meshing between the first bevel gear 12 and the second bevel gear 15, realizing the lifting of the threaded lifting rod 19 through the threaded connection between the threaded sleeve 14 and the threaded lifting rod 19, further driving the lifting frame 16 to lift the movable wheel 10, improving the stability of the lifting frame 16 when in motion through the sliding connection between the limiting groove 18 and the limiting plate 17, thereby being beneficial to the movable wheel 10 extending out (accommodating) from the inside of the supporting column 5, and being beneficial to the movement (fixing) of the equipment, is convenient for the user to push.

Example 2

As shown in fig. 6, in some embodiments, the transmission assembly includes electric telescopic handle 20 fixedly installed inside support column 5, electric telescopic handle 20 is totally four, and pass through welded connection between the upper end of electric telescopic handle 20 and the inside top of support column 5, setting through electric telescopic handle 20, it goes up and down to realize that crane 16 drives removal wheel 10, through the sliding connection between spacing groove 18 and limiting plate 17, stability when improving crane 16 motion, thereby be favorable to removing wheel 10 and stretching out (accomodating) from support column 5 is inside, thereby be favorable to the removal (fixed) of equipment, the person of facilitating the use promotes.

In this embodiment: through the setting of four electric telescopic handle 20, can realize 16 synchronous motion of crane, drive through crane 16 and remove wheel 10 and go up and down, under the sliding connection between spacing groove 18 and limiting plate 17, stability when improving crane 16 and move to be favorable to removing wheel 10 and stretching out (accomodate) from 5 insides of support column, thereby be favorable to the removal (fixed) of equipment, the person of facilitating the use promotes, make the degree of automation of equipment improve, thereby reduce manpower output.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stable rowing machine, includes main part board (1), slidable mounting has cushion (2) on main part board (1), and support column (5) are installed to the below bilateral symmetry of main part board (1), install between two relative support column (5) with main part board (1) fixed connection's crossbeam (4), its characterized in that: the middle part position department of main part board (1) has seted up logical groove (24), the inside slidable mounting who leads to groove (24) has slide (25) with cushion (2) fixed connection, and the one end that leads to groove (24) installs guide pulley (33), the inside that leads to groove (24) is located slidable mounting between guide pulley (33) and slide (25) has balancing weight (28), install haulage rope (30) with guide pulley (33) adaptation between balancing weight (28) and slide (25).

2. A stable rowing machine in accordance with claim 1, wherein: the lower extreme movable mounting of support column (5) has removal wheel (10), the inside of support column (5) is equipped with the transmission assembly that is used for the drive to remove wheel (10) and goes up and down.

3. A stable rowing machine in accordance with claim 2, wherein: the transmission assembly comprises a linkage shaft (11) rotatably mounted inside the cross beam (4), two ends of the linkage shaft (11) extend into the support column (5) and are provided with first bevel gears (12), a partition plate (13) is mounted in the middle of the inside of the support column (5), a threaded sleeve (14) is rotatably mounted on the partition plate (13), a second bevel gear (15) meshed with the first bevel gears (12) is mounted at the upper end of the threaded sleeve (14), a threaded lifting rod (19) is connected inside the threaded sleeve (14) through threads, and one end of the linkage shaft (11) penetrates through the support column (5) and is provided with a knob;

or the transmission assembly comprises an electric telescopic rod (20) fixedly installed inside the supporting column (5), and the upper end of the electric telescopic rod (20) is connected with the top end inside the supporting column (5) in a welding mode; preferably, the number of the electric telescopic rods (20) is four.

4. A stable rowing machine in accordance with claim 2, wherein: the utility model discloses a solar energy collecting device, including transmission assembly, crane, limiting plate (17), limiting groove (18) with limiting plate (17) sliding connection are seted up to the inner wall symmetry of support column (5), transmission assembly's output is installed and is rotated crane (16) of being connected with removal wheel (10), limiting plate (17) are installed to the bilateral symmetry of crane (16).

5. A stable rowing machine in accordance with claim 1, wherein: the lower extreme of main part board (1) is close to middle part position department and installs connecting plate (27), spring (29) are installed to the symmetry between connecting plate (27) and balancing weight (28).

6. A stable rowing machine in accordance with claim 1, wherein: the bottom of the through groove (24) is provided with a sliding groove (32), and a T-shaped sliding block (31) fixedly connected with the upper end of the balancing weight (28) is slidably mounted inside the sliding groove (32).

7. A stable rowing machine in accordance with claim 1, wherein: a rear supporting plate (26) is rotatably arranged at one end of the main body plate (1), a foot pad (3) is symmetrically and rotatably arranged at the other end of the main body plate (1) above the cross beam (4), and an elastic binding band is arranged at the middle section of the foot pad (3); preferably, the surface of the foot pad (3) is provided with anti-skidding teeth.

8. A stable rowing machine in accordance with claim 1, wherein: the hydraulic damper is characterized in that rocker arms (6) are symmetrically and movably mounted on one of the cross beams (4), hydraulic dampers (7) are symmetrically and movably mounted on the other of the cross beams (4), and the telescopic ends of the hydraulic dampers (7) are connected with the rocker arms (6) through hinges.

9. A stable rowing machine in accordance with claim 8, wherein: universal joints (8) are mounted at the joint of the cross beam (4) and the rocker arm (6) and the joint of the cross beam (4) and the hydraulic damper (7).

10. A stable rowing machine in accordance with claim 8, wherein: the upper end of rocking arm (6) is equipped with ball groove (23), and the upper end movable mounting of rocking arm (6) has linking arm (21), rotate on linking arm (21) and install handle (9), and the lower extreme of linking arm (21) install with spheroid (22) of ball groove (23) adaptation.