CN112546545A - Body-building apparatus - Google Patents

Abstract

The invention provides a body-building device which comprises a body-building frame, barbell bars, a limiting component and a counterweight component, wherein the body-building frame comprises a frame body, two upright posts and two guide rods corresponding to the upright posts, a plurality of positioning parts are arranged on the upright posts, and pulley blocks are respectively arranged on two sides of the top of the frame body; the barbell bar slides and is arranged on the two guide rods, the two ends of the barbell bar are respectively and fixedly connected with the hook pieces, the limiting assembly comprises a first slider and a second slider, and is connected with a connecting assembly between the first slider and the second slider, the connecting assembly is provided with a driving unit connected to the barbell bar, the second slider is pivoted and arranged on the second slider, a transmission piece on one side of the driving unit can be blocked and arranged, and the elastic locking piece is pivoted and connected to the transmission piece, the elastic locking piece is inserted into the stand column due to self elasticity, and the elastic locking piece is separated from the stand column due to the pivoting of the driving unit which is. The fitness equipment is beneficial to improving the use safety of the barbell bar through the arrangement of the limiting component.

Description

Body-building apparatus

Technical Field

The invention relates to the technical field of fitness equipment, in particular to a fitness device.

Background

The fitness equipment is specially used for fitness of people, wherein two guide rods are usually arranged on the fitness equipment and used for guiding the barbell rod to slide up and down, meanwhile, a hook capable of being hooked on a positioning piece on the fitness equipment is also arranged on the barbell rod, and the barbell rod is positioned on the fitness equipment through the hook of the hook on the positioning piece. However, the barbell bar is positioned only by the way of matching the hook and the positioning piece, and the problem of poor positioning effect still exists when the barbell bar is used.

Disclosure of Invention

In view of the above, the present invention is directed to an exercise device to improve the positioning effect of the barbell bar on the exercise frame.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an exercise machine, comprising:

the exercise frame comprises a frame body, wherein two upright columns which are arranged in parallel and two guide rods which are vertically arranged and correspond to the upright columns are arranged on two sides of the frame body, a plurality of positioning pieces which are arranged at intervals along the height direction of the upright columns are arranged on the upright columns respectively, and first pulley blocks are arranged on two sides of the top of the frame body respectively;

the barbell rod is arranged on the two guide rods in a sliding manner, hook hangers are fixedly connected to two ends of the barbell rod respectively, and the hook hangers can be hooked on the two corresponding positioning pieces respectively;

the limiting assembly comprises a first slider and a second slider which are respectively arranged on the upright post and the guide rod in a sliding manner, and a connecting assembly connected between the first slider and the second slider, wherein the connecting assembly is provided with a driving unit connected to the barbell rod, a transmission piece which is arranged on the second slider in a pivoting manner and can be blocked at one side of the driving unit, and an elastic locking piece which is connected to the transmission piece in a pivoting manner, the elastic locking piece is inserted into the upright post due to the elasticity of the elastic locking piece, and the elastic locking piece is separated from the upright post due to the fact that the transmission piece bears the pivoting of the driving unit;

and the counterweight components are respectively arranged on two sides of the frame body in a sliding way, and each counterweight component penetrates through the first pulley block through a first pull wire and is respectively connected with the first sliding piece and the barbell bar.

Furthermore, a plurality of locking holes are formed in the stand column and are arranged at intervals in the height direction of the stand column, a containing groove is formed in the first sliding piece, the elastic locking piece is connected in the containing groove in a sliding mode and connected with the locking piece connected with the transmission piece, a spring located in the containing groove is sleeved on the locking piece, and the locking piece is inserted into any one of the locking holes under the elastic force action of the spring.

Further, a connecting member is pivotally connected between the locking member and the transmission member.

Furthermore, the driving unit is provided with a driving plate fixedly connected to the barbell bar and a wheel body pivotally arranged on the pivoting plate, and the transmission piece is blocked on one side of the wheel body.

Furthermore, a limiting plate is arranged on the transmission part corresponding to the wheel body and is arranged on one side of the wheel body in a blocking manner.

Furthermore, two baffle plates which are arranged in parallel are connected between the first sliding part and the second sliding part, and the connecting component is blocked between the two baffle plates.

Furthermore, second pulley blocks are respectively installed on two sides of the top end of the frame body, second stay wires penetrate through the second pulley blocks respectively, one end of each second stay wire is connected with the barbell bar, the other end of each second stay wire is connected with a counterweight, and the weight of each counterweight is half of the weight of the barbell bar.

Furthermore, a cross beam extending along the width direction of the frame body is arranged at the top of the frame body, and two handles are arranged on the cross beam at intervals.

Furthermore, two sides of the bottom of the frame body are respectively provided with a pedal.

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

according to the fitness equipment, the limiting assembly is arranged on the barbell rod, the barbell rod is favorably positioned on the guide post through the hooking of the hooking piece on the positioning piece, the transmission piece can be abutted against the driving unit through the interaction of the elastic locking piece arranged in the connecting unit between the first sliding piece and the second sliding piece and the transmission piece, the hooking of the hooking piece on the positioning piece is favorably kept, and therefore the safety of the barbell rod in the using process is improved.

In addition, the second sliding piece is fixed on the upright post through the matching of the locking piece, the spring and the locking hole, the operation mode is simple, and the use is convenient. The setting of connecting piece does benefit to the effect of further improvement driving medium and locking piece when using. The setting of drive plate and wheel body does benefit to the effect when improving the use, and the setting of limiting plate does benefit to the spacing effect of improvement to the wheel body, and its simple structure, and the design implementation of being convenient for. The setting of two baffles does benefit to and improves spacing subassembly neatness nature on the whole.

In addition, the weight of the barbell bar can be offset by the arrangement of the balance weight piece, so that the load of the user for exercising can be acquired conveniently. The arrangement of the handle is beneficial to improving the utilization rate of the body builder, thereby carrying out exercise with other functions. And the arrangement of the notch on the handle is beneficial to improving that the handle is more in line with human engineering when in use, thereby having better test effect. The pedal is simple in structure, the space utilization rate of the body builder is further improved, and a better exercise effect is achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an exercise apparatus according to an embodiment of the present invention from a perspective thereof;

FIG. 2 is a schematic structural diagram of an exercise apparatus according to an embodiment of the present invention from another perspective;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic structural diagram of a pulley block according to an embodiment of the present invention;

FIG. 5 is a schematic view of a barbell bar according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a limiting unit according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a handle according to an embodiment of the present invention;

FIG. 8 is a schematic view of the internal structure of the handle according to the embodiment of the present invention;

fig. 9 is a schematic structural view of a fourth sliding member according to an embodiment of the present invention;

description of reference numerals:

1. a lower longitudinal beam; 2. a weight plate; 3. a second support beam; 4. a third support beam; 5. a fourteenth fixed sheave; 6. a first locking member; 7. a thirteenth fixed sheave; 8. a guide bar; 9. a first upright post; 10. a foot pedal; 11. positioning pins; 12. a first handle; 13. a barbell bar; 14. a first cross member; 15. a sixteenth fixed pulley; 16. an upper longitudinal beam; 17. a second handle; 18. a second cross member; 19. a second upright post; 20. a support; 21. a handle; 22. a fourth slider; 23. a first support beam; 24. a third stay wire; 25. a second pull wire; 26. a first pull wire; 27. a first movable pulley; 28. a fifth fixed pulley; 29. a sixth fixed pulley; 30. a mounting seat; 31. a first cylinder; 32. a first locking hole; 33. a third slider; 34. a second slider; 35. a fourth fixed pulley; 36. a ninth fixed sheave; 37. a guide bar; 38. a tenth fixed pulley; 39. a counterweight; 40. a second fixed pulley; 41. a first fixed pulley; 42. a second movable pulley; 43. a third movable pulley; 44. a mounting frame; 45. an eleventh fixed sheave; 46. a third fixed pulley; 47. a fifteenth fixed sheave; 48. hooking the hanging piece; 49. a baffle plate; 50. a drive plate; 51. a wheel body; 52. a connecting plate; 53. a drive plate; 54. a first slider; 55. a seventh fixed pulley; 56. an eighth fixed pulley; 57. a twelfth fixed pulley; 58. a limiting plate; 59. a second lock; 60. a second cylinder; 61. a fixing plate; 62. a rolling body; 63. a second locking hole.

Detailed Description

It should be noted that, in the case of no conflict,

the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or indicate

It is implied that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation and therefore should not be construed as limiting the invention. Furthermore, the terms "first" to "sixteenth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The present embodiment relates to an exercise machine, as shown in fig. 1 to 3, the exercise machine includes an exercise frame having a frame body including two lower longitudinal beams 1 arranged in parallel and at an interval, and two upper longitudinal beams 16 arranged above corresponding to the two lower longitudinal beams 1, and a first support beam 23 and a second support beam 3 connected between the upper longitudinal beam 16 and the lower longitudinal beam 1 and arranged at an interval, and both ends of the upper longitudinal beam 16 and the lower longitudinal beam 1 extend outward and are disposed with an outward-facing left-hand side, respectively. A first cross member 14 and a second cross member 18 are connected between both ends of the two upper longitudinal members 16. The frame body has simple structure and good use stability.

Corresponding to the two ends of the first cross beam 14, a first upright post 9 and a guide rod 8 are respectively connected between the upper longitudinal beam 16 and the lower longitudinal beam 1, and a plurality of positioning pieces are arranged on the first upright post 9 at intervals along the height direction of the first upright post. The exercise machine further comprises barbell bars 13 slidably disposed on the two guide bars 8, wherein the two guide bars 8 are respectively sleeved with a third slider 33, the barbell bars 13 are respectively pivotally connected to the third sliders 33, and the third sliders 33 slide up and down on the guide bars 8 due to external force.

As shown in fig. 3, the third sliding member 33 in the present embodiment may be a sliding sleeve, and the positioning member is a positioning pin 11 disposed across the first upright 9. Corresponding to the inner sides of the two first upright posts 9, hooking pieces 48 are respectively fixed on the barbell bar 13, the hooking pieces 48 are specifically hooking plates, and the free ends of the hooking plates are constructed with hooking grooves capable of hooking the positioning pins 11. When the barbell bar 13 is not needed, the barbell bar 13 can be positioned by rotating the barbell bar 13 to hook the hook plate on the corresponding positioning pin 11.

The exercise machine in this embodiment further comprises a limiting assembly, which specifically comprises a first sliding member 54 and a second sliding member 34 respectively slidably disposed on the first upright 9 and the guide bar 8, and a connecting assembly connected between the first sliding member 54 and the second sliding member 34. As shown in fig. 5, two blocking plates 49 are connected between the first slider 54 and the second slider 34 in parallel, and the connecting member is located between the two blocking plates 49. The first sliding part 54 in this embodiment is specifically an arc-shaped plate that can slide along the first upright 9, and the second sliding part 34 is specifically a sliding sleeve that is sleeved on the guide rod 8. The coupling assembly has a drive unit connected to the barbell bar 13, a transmission member pivotally mounted to the second slider 34 and capable of being retained on one side of the drive unit, and a first elastic locking member pivotally connected to the transmission member, the first elastic locking member being inserted into the first upright 9 due to its own elasticity and disengaged from the first upright 9 due to the transmission member receiving the pivot of the drive unit.

In this embodiment, the first upright post 9 is provided with a plurality of first locking holes 32 arranged at intervals along the height direction thereof, the first sliding member 54 is provided with an accommodating groove, the first elastic locking member includes a first locking member 6 slidably connected in the accommodating groove and connected to the transmission member, the first locking member 6 is sleeved with a spring located in the accommodating groove, and the first locking member 6 is inserted into any one of the first locking holes 32 due to the elastic force of the spring.

In a specific structure, as shown in fig. 3, the upper and lower ends of the first sliding member 54 are respectively provided with a transverse plate, and a vertical plate is fixedly connected between the two transverse plates, the vertical plate is provided with a first cylinder 31, the first cylinder 31 is provided with the above-mentioned accommodating groove, the first locking member 6 sleeved with the spring is slidably arranged in the first cylinder 31, the first locking member 6 is provided with a through hole on the first sliding member 54 corresponding to the first cylinder 31, and the first locking member 6 can be locked and inserted in the first locking hole 32 after penetrating through the through hole due to the elastic force of the spring.

Referring to fig. 3, 5 and 6, the transmission member is a transmission plate 50, and in order to facilitate the transmission plate 50 to pivot on the second sliding member 34, in this embodiment, a mounting seat 30 is disposed on the second sliding member 34, a middle lower portion of the transmission member is pivotally connected to the mounting seat 30 via a pivot shaft, and a connection member is pivotally connected between a bottom end of the transmission plate 50 and an end of the first locking member 6 away from the first locking hole 32, where the connection member is a plate-shaped member. Meanwhile, the driving unit has a driving plate 53 fixed to two ends of the barbell bar 13 corresponding to the top end of the driving plate 50, and a wheel body 51 pivotally disposed on the driving plate 53, and the top end of the driving member is blocked on one side of the wheel body 51 to form a limit for the rotation of the driving plate 53. In addition, in order to further improve the effect of limiting the wheel body 51 by the transmission plate 50, a limiting plate 58 abutting against one side of the wheel body 51 is fixed to the top end of the transmission plate 50 in the embodiment.

So set up, driving plate 50 plays similar lever's effect, after barbell rod 13 colludes on locating pin 11, continues to slide third slider 33 downwards, and at this moment, wheel body 51 can slide in the space that is injectd by limiting plate 58 and third slider 33 to with limiting plate 58 butt, limiting plate 58 can restrict the position of wheel body 51. Meanwhile, the first locking piece 6 is inserted into the corresponding first locking hole 32 due to the elastic force of the spring and remains locked, thereby facilitating the barbell bar 13 to maintain the state where the hook 48 is hooked on the positioning pin 11. When the barbell bar 13 needs to be used, the barbell bar 13 is rotated to enable the hooking piece 48 to be released from the positioning locking relation with the positioning pin 11, at this time, the wheel body 51 pushes the limiting plate 58 outwards, the bottom end of the transmission plate 50 pulls the first locking piece 6 outwards through the connecting plate 52, the spring is compressed until the first locking piece 6 is pulled out of the first locking hole 32, and at this time, the barbell bar 13 can slide up and down on the guide rod 8 through the third sliding piece 33.

The exercise apparatus in this embodiment further comprises a first pulley block mounted on the frame body, and weight components slidably disposed on two sides of the frame body, wherein each weight component is respectively connected to the first slider 54 and the barbell bar 13 via a first pull wire 26 passing through the first pulley block.

In order to improve the function and space utilization of the exercise apparatus of this embodiment, as shown in fig. 1 to 3 and fig. 7 to 9, a second upright 19 is disposed on the frame body opposite to the first upright 9, a plurality of second locking holes 63 are disposed on each second upright 19 at intervals along the height direction of the second upright 19, a fourth sliding member 22 is slidably sleeved on each second upright 19, and a second elastic locking member for fixing the fourth sliding member 22 on the second upright 19 is disposed on the fourth sliding member 22.

As shown in fig. 9, a fixing plate 61 is provided in the fourth slider 22 on the side of the second column 19, and a second cylinder 60 is provided on the fixing plate 61 and perpendicular to the second column 19. The second resilient locking member comprises a second locking member 59 which is spring loaded and slidably disposed within the second cylinder 60. The second locking member 59 can be inserted into any one of the second locking holes 63 due to the elastic action of the spring, so as to realize the positioning of the fourth sliding member 22 on the second upright 19, and can release the locking relation with the second locking hole 63 due to the outward pulling of the external force, thereby facilitating the vertical sliding of the fourth sliding member 22 on the second upright 19. In addition, three rolling bodies 62 are rotatably provided on the fourth slider 22 to enhance the effect of the fourth slider 22 in use.

As shown in fig. 1 to 3, the weight assembly in this embodiment includes two sets of guide rods 37 respectively located between the second support beam 3 and the first support beam 23 on two sides of the frame body, and a plurality of weight plates 2 slidably disposed on each set of guide rods 37, and a connecting rod disposed to penetrate each weight plate 2 is connected to the weight plate 2 located on the topmost layer, and corresponding to each weight plate 2, a through hole is formed in the connecting rod, and each weight plate 2 is connected to the connecting rod sequentially from top to bottom via fasteners penetrating through the weight plates 2 and the through holes.

Each fourth sliding member 22 is provided with a bracket 20, each bracket 20 is provided with two mounting plates arranged at intervals, the frame body is further provided with a third pulley block, the counterweight assembly is respectively connected with the fourth sliding member 22 and the handle 21 by a third pull wire 24 penetrating through the third pulley block, and each handle 21 is respectively limited between the two mounting plates. Obviously, the pull handle 21 and the barbell bar 13 cannot be used simultaneously in this embodiment.

Structurally, the third pulley block comprises a first movable pulley 27 disposed at the top end of each connecting rod, two first fixed pulleys 41 mounted below the two upper longitudinal beams 16 and arranged at intervals, and two second fixed pulleys 40, wherein the second fixed pulleys 40 are disposed closer to the barbell bar 13. A third fixed pulley 46 is provided on the second fixed pulley 40 on the side close to the barbell bar 13, a mounting bracket 44 is provided below the third fixed pulley 46, and a second movable pulley 42 and a third movable pulley 43 are provided on the mounting bracket 44 in an up-and-down arrangement.

A fourth fixed pulley 35 arranged at the bottom end of the first supporting beam 23, a fifth fixed pulley 28 arranged at one end of the side sill 1 close to the second upright post 19, and a sixth fixed pulley 29 arranged between the fourth fixed pulley 35 and the fifth fixed pulley 28. A seventh fixed pulley 55 is disposed at the top end of the second upright column 19, an eighth fixed pulley 56 is disposed between the seventh fixed pulley 55 and the first fixed pulley 41, and the axes of the eighth fixed pulley 56 and the fourth fixed pulley 35 are both parallel to the height direction of the frame body, so as to achieve a better guiding effect on the pulling rope. In addition, two second movable pulleys 42 are provided between the two mounting plates.

After passing through the first movable pulley 27, the third wire 24 passes through the top of the second fixed pulleys 40, passes through the bottom of the second movable pulley 42, passes through the third fixed pulley 46, the eighth fixed pulley 56 and the seventh fixed pulley 55, and then passes downward between the second movable pulleys 42 to be connected to the handle 21. The other end of the third pulling wire 24 firstly winds upward over the tops of the two first fixed pulleys 41, then winds downward over the fourth fixed pulley 35, the sixth fixed pulley 29 and the fifth fixed pulley 28, then winds upward and is connected with the fourth sliding part 22. With this arrangement, when the position of the fourth slider 22 is fixed with respect to the second upright 19, the user can perform load exercise by pulling the pull handle 21.

The first pulley block comprises a ninth fixed pulley 36 corresponding to the second movable pulley 42 and the third movable pulley 43 and arranged on the lower longitudinal beam 1, a tenth fixed pulley 38 arranged at the bottom end of the second supporting beam 3, an eleventh fixed pulley 45 arranged at the top end of the third supporting beam 4 and a twelfth fixed pulley 57 arranged at the top end of the first upright post 9. In addition, a thirteenth fixed pulley 7 and a fourteenth fixed pulley 5 located between the thirteenth fixed pulley 7 and the ninth fixed pulley 36 are further provided at the bottom end of the guide bar 8. And a fifteenth fixed sheave 47 between the eleventh fixed sheave 45 and the twelfth fixed sheave 57. Wherein, the axes of the fourteenth fixed pulley 5 and the fifteenth fixed pulley 47 are parallel to the height direction of the frame body, so as to have better use effect.

After passing through the top of the third fixed pulley 46, the first pulling wire 26 is first laid down at one end, and then extended upward after passing through the ninth fixed pulley 36, the fourteenth fixed pulley 5 and the thirteenth fixed pulley 7 in this order, and finally connected to the first slider 54. The other end of the first wire 26 is first disposed downward, and is disposed upward after sequentially passing through the tenth fixed pulley 38, and is disposed downward after passing through the eleventh fixed pulley 45, the fifteenth fixed pulley 47, and the twelfth fixed pulley 57, and is finally connected to the first slider 54.

In addition, in this embodiment, the second pulley blocks are respectively installed on two sides of the top end of the frame body near the guide rod 8, each second pulley block respectively includes two sixteenth fixed pulleys 15 arranged at intervals on the upper longitudinal beam 16, and a seventeenth fixed pulley arranged between the two sixteenth fixed pulleys 15, the second pull wire 25 respectively winds around the two sixteenth fixed pulleys 15 and the seventeenth fixed pulley, one end of the second pull wire 25 is connected with the barbell rod 13, and the other end of the second pull wire 25 is connected with a counterweight 39 with a weight equal to half of the weight value of the barbell rod 13. As shown in fig. 4, to improve the use effect of the weight member 39, the weight member 39 in this embodiment has a columnar shape and is guided to slide in the third support beam 4.

In this embodiment, the first beam 14 is further provided with two first handles 12 arranged at intervals, and each first handle 12 is provided with a notch for cutting each first handle 12 into two parts. Correspondingly, two second handles 17 are arranged at a distance from each other on the second cross member 18, and a cutout is also provided in each second handle 17. The two sides of the bottom of the frame body are respectively provided with a pedal 10 to improve the flexibility when in use.

Here, the setting of handle does benefit to the utilization ratio that improves the fitness equipment to carry out the exercise of other functions. And the arrangement of the notch on the handle is beneficial to improving that the handle is more in line with human engineering when in use, thereby having better test effect. The pedal 10 is simple in structure, and is beneficial to further improving the space utilization rate of the body builder and achieving a better exercise effect.

When the pull handle 21 in this embodiment is used, the second locking member 59 on the bracket 20 is firstly pulled out, so that the bracket 20 is unlocked from the second upright post 19, then the bracket 20 is adjusted to a proper position on the second upright post 19, finally, the second locking member 59 is released, and the second locking member 59 is inserted on the second upright post 19, so that the bracket 20 is relatively fixed on the second upright post 19, and at this time, the purpose of exercise can be achieved by pulling the pull handle 21.

It will be appreciated that the exercise apparatus may be provided without the pull handle 21, and in such cases, the second upright 19, the support 20, etc. need not be provided. The third pulling wire 24 is wound around the first movable pulley 27, the second fixed pulley 40, the third fixed pulley 46 and the second movable pulley 42, and connected end to end, or both ends are respectively fixed relative to the frame body, so that the connection between the barbell bar 13 and the counterweight assembly can also be realized.

The fitness equipment described in the embodiment, through set up spacing subassembly on barbell bar 13, through colluding the hook of pendant 48 on the setting element, do benefit to and realize the location of barbell bar 13 on first stand 9, and through the first elasticity locking piece and the interact of driving medium that set up in the linkage unit between first slider 54 and second slider 34, can make driving medium and drive unit's butt, do benefit to and keep colluding the hook of pendant 48 on the setting element, thereby improve the security of barbell bar 13 in the use.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. An exercise machine, comprising:

the exercise frame comprises a frame body, two upright posts which are arranged in parallel and two guide rods (8) which are vertically arranged and correspond to the upright posts are arranged on two sides of the frame body, a plurality of positioning pieces which are arranged at intervals along the height direction of the upright posts are arranged on the upright posts respectively, and first pulley blocks are arranged on two sides of the top of the frame body respectively;

the barbell rod (13) is slidably arranged on the two guide rods (8), the two ends of the barbell rod (13) are fixedly connected with hook pieces (48) respectively, and the hook pieces (48) can be hooked on the two corresponding positioning pieces respectively;

the limiting assembly comprises a first slider (54) and a second slider (34) which are respectively arranged on the upright post and the guide rod (8) in a sliding manner, and a connecting assembly connected between the first slider (54) and the second slider (34), wherein the connecting assembly is provided with a driving unit connected to the barbell bar (13), a transmission piece which is arranged on the second slider (34) in a pivoting manner and can be blocked at one side of the driving unit, and an elastic locking piece (6) which is connected to the transmission piece in a pivoting manner, the elastic locking piece (6) is inserted into the upright post due to the elasticity of the elastic locking piece, and is separated from the upright post due to the pivoting of the transmission piece for bearing the driving unit;

and the counterweight components are respectively and slidably arranged on two sides of the frame body, and each counterweight component is respectively connected with the first sliding piece (54) and the barbell bar (13) through a first pull wire (26) passing through the first pulley block.

2. The exercise machine of claim 1, wherein: the upright post is provided with a plurality of locking holes (32) which are arranged at intervals along the height direction of the upright post, a containing groove is formed in the first sliding part (54), the elastic locking piece (6) comprises a locking piece (6) which is connected with the transmission part in a sliding mode and is arranged in the containing groove, a spring positioned in the containing groove is sleeved on the locking piece (6), and the locking piece (6) is inserted into any one of the locking holes (32) under the action of the elastic force of the spring.

3. The exercise machine of claim 1, wherein: a connecting piece is pivotally connected between the locking piece (6) and the transmission piece.

4. The exercise machine of claim 1, wherein: the driving unit is provided with a driving plate (53) fixedly connected to the barbell bar (13) and a wheel body (51) pivotally arranged on the pivoting plate, and the transmission piece is blocked on one side of the wheel body (51).

5. The exercise machine of claim 1, wherein: corresponding to the wheel body (51), a limit plate (58) which is arranged on one side of the wheel body (51) in a blocking mode is formed on the transmission piece.

6. The exercise machine of claim 1, wherein: two baffles (49) arranged in parallel are connected between the first sliding piece (54) and the second sliding piece (34), and the connecting assembly is positioned between the two baffles (49).

7. The exercise machine of claim 1, wherein: second pulley blocks are respectively installed on two sides of the top end of the frame body, second pull wires (25) penetrate through the second pulley blocks respectively, one end of each second pull wire (25) is connected with the barbell rod (13), the other end of each second pull wire is connected with a counterweight (39), and the weight of each counterweight (39) is half of the weight of the barbell rod (13).

8. The exercise machine of claim 1, wherein: the top of the frame body is provided with a beam which extends along the width direction of the frame body, and the beam is provided with two handles which are arranged at intervals.

9. The exercise machine of claim 8, wherein: notches are arranged on the handles to break the handles into two parts.

10. The exercise machine of any one of claims 1 to 9, wherein: two sides of the bottom of the frame body are respectively provided with a pedal (10).

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