A barbell shoulder press fitness equipment

Abstract

The present invention discloses a barbell shoulder press fitness machine, which relates to the field of fitness equipment. The technical solution is as follows: it includes a human body support part for providing a support position for the user's body; a weight-bearing assembly, including a weight-bearing rod and a counterweight assembly; the weight-bearing support part includes a cavity for accommodating the counterweight assembly at positions corresponding to both sides of the human body support part, and the counterweight assembly is arranged in the cavity; the weight-bearing support part also includes a support mechanism for supporting the weight-bearing rod. The beneficial effect of the present invention is that the implementation scheme of the present application combines the first support part and the second support part in the support mechanism to protect the rising and falling processes in the press process with different structures respectively. The first support part is combined with a first support plate and a first limiting plate. If the user cannot withstand the weight of the barbell plate and causes the weight-bearing rod to drop, the first support plate can support the weight-bearing rod under the support of the limiting plate, thereby ensuring the safety of the user.

Description

Technical Field

[0001] The invention relates to the field of fitness equipment, in particular to a barbell shoulder press fitness device. Background Art

[0002] Fitness is a sport, such as various types of calisthenics, rhythmic gymnastics, body gymnastics and various self-resistance movements. Through fitness, you can enhance strength, improve body flexibility, increase endurance, improve body coordination and the ability to control various parts of the body, thereby achieving the purpose of strengthening the body. Barbell shoulder press is one of the fitness activities that increase upper limb strength.

[0003] The barbell shoulder press requires the fitness person to sit on a bench, use his shoulders to support the barbell, and hold the barbell with both hands, with his hands slightly wider than his shoulders. After getting into position, the fitness person can use force to lift the barbell up, and slowly straighten his hands to lift the barbell high. After lifting it to the highest point that his arms can reach, put it down and start a new round of presses. In this process, the fitness person can achieve the goal of improving the strength of his upper limb muscles.

[0004] Although the barbell shoulder press can greatly improve the upper limb strength of the fitness user, the fitness user's arm strength will also be greatly consumed during the barbell shoulder press. It is very easy to cause fatigue during long-term exercise. Once the fatigue problem occurs, it is very easy to cause muscle strain to the fitness user, and even worse, the fitness user may be injured. In view of this, the present invention proposes a barbell shoulder press fitness device. Summary of the Invention

[0005] In view of one of the deficiencies of the prior art, the present invention provides a barbell shoulder press fitness device to solve the safety problem of the seated barbell shoulder press action.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a barbell shoulder press fitness device, comprising:

[0007] The body support part is used to provide a support position for the user's body and is provided with a support area corresponding to the user's sitting posture;

[0008] A weight-bearing assembly, comprising a weight-bearing rod and a counterweight assembly, wherein the weight-bearing rod is placed horizontally above the human body support portion, and the counterweight assembly comprises a plurality of barbell plates detachably connected to both ends of the weight-bearing rod;

[0009] The weight-bearing support part includes a cavity for accommodating the counterweight assembly at positions corresponding to both sides of the human body support part. The counterweight assembly is arranged in the cavity. Both ends of the weight-bearing rod extend into the cavity of the weight-bearing support part, and the weight-bearing rod can drive the counterweight assembly to rise or fall in the cavity; the weight-bearing support part also includes a support mechanism for supporting the weight-bearing rod.

[0010] Preferably, the human body supporting portion comprises:

[0011] The lower body support part is used to provide support for the user's buttocks when sitting;

[0012] A torso support portion, provided on one side of the lower body support portion, for providing support to the user's back;

[0013] The arm support parts are arranged on two parallel sides adjacent to the lower body support part and the trunk support part, and are used to provide support force for the arms of the user when performing upward push-up.

[0014] Preferably, the upper side of the lower body support portion is a downwardly concave area, in which a seat cushion is provided;

[0015] The trunk support portion includes a backrest with a curvature, and the backrest is provided with a plurality of ventilation holes;

[0016] The arm support part is arranged in an "eight"-shaped structure on both sides of the lower body support part, and one end of its small opening is arranged close to the torso support part; the upper end of the arm support part is provided with an arm groove corresponding to the human arm, the arm groove is a lower groove, and its groove bottom is an arc-shaped surface, and an open mouth is provided at one end of the arm groove facing the torso support part, and an arc-shaped transition surface from the groove bottom to the groove top is provided at the end away from the torso support part.

[0017] Preferably, the load-bearing rod comprises:

[0018] A gripping rod is arranged across the body support portion and is used for the user to hold when performing a push-up;

[0019] An adjusting rod is provided at both ends of the gripping rod, is sleeved and slidably connected to the gripping rod, and the sliding direction of the sliding connection is the axial direction of the adjusting rod;

[0020] A plug hole is provided in the middle of the barbell plate of the weight counterweight assembly corresponding to the adjusting rod.

[0021] Preferably, a slide block assembly is provided between the gripping rod and the rod body of the adjusting rod, and the sliding direction of the slide block assembly is the axial direction of the gripping rod; the rod body of the adjusting rod is provided with an external thread; and the load-bearing rod further comprises:

[0022] An adjustment seat is provided corresponding to each of the adjustment rods, and the adjustment seat is threadedly connected to the adjustment rod; the load-bearing support part is provided with an adjustment seat limiting structure corresponding to the adjustment seat, and the adjustment seat limiting structure can allow the adjustment seat to rise or fall in the vertical direction, and the adjustment seat will not rotate relative to the axial direction of the adjustment rod.

[0023] Preferably, the support mechanism of the load-bearing support portion includes:

[0024] a support frame, disposed in the cavity;

[0025] A first support portion is connected to the support frame and is used to provide protection when the load-bearing rod moves upward; the first support portion includes:

[0026] A plurality of first support plates are arranged in an array in a vertical direction, and one side of the first support plate is hinged to the frame body of the support frame;

[0027] A first limiting plate is provided corresponding to each first supporting plate. The first limiting plate is fixedly connected to the supporting frame and is located at the lower side of the first supporting plate.

[0028] Preferably, a groove corresponding to the weight-bearing rod is provided on the upper side of the first support plate, and an upwardly extending plate body is provided on the side of the first support plate facing the user.

[0029] Preferably, the support mechanism of the load-bearing support portion further comprises:

[0030] The second support portion is provided on the support frame, the second support portion is arranged opposite to the first support portion, a gap is left between the second support portion and the first support portion, and the load-bearing rod is located between the second support portion and the first support portion when in use; the second support portion is used to provide support force when the user drives the load-bearing rod to move downward; the second support portion includes:

[0031] The second support plate has one side hinged to the support frame and the other side extending toward the first support portion; a torsion spring is provided at the hinge between the second support plate and the support frame, and in the natural state of the torsion spring, the second support plate is in a horizontal state.

[0032] Preferably, the side facing the user when the fitness device is in use is the front side, and the side facing away is the rear side; the support frame can slide back and forth in the direction from the front side to the rear side within the cavity; the first support portion is arranged at the rear portion of the support frame, and the second support portion is arranged at the front portion of the support frame; the load-bearing support portion further includes a linkage mechanism for driving the support frame to move, and the linkage mechanism includes:

[0033] An active rod is arranged at the upper part of the cavity, and a corresponding active rod slot is provided in the cavity; one end of the active rod extends above the moving path of the load-bearing rod, and the active rod can be raised under the pushing force of the load-bearing rod;

[0034] A driven rod assembly is provided on the rear side of the support frame, comprising two driven rods, the driven rods being symmetrically arranged, one end of each driven rod being hinged to the rear side of the support frame, and the other end extending toward the rear of the support frame;

[0035] A driven slider is provided corresponding to each driven rod and is hinged to the end of the driven rod away from the support frame; a vertical driven slide groove is provided in the cavity corresponding to the driven slider, and the driven slider is slidably connected to the driven slide groove; the driven slider located at the upper part is fixedly connected to one end of the active rod;

[0036] The return spring is located at the front side or the rear side of the support frame and is arranged between the inner wall of the cavity and the support frame.

[0037] Preferably, the load-bearing support portion further comprises:

[0038] The locking mechanism is used to lock the moving position of the support frame; the locking mechanism includes:

[0039] A locking rod is provided at the lower portion of the cavity and can slide in a horizontal direction, wherein the sliding direction of the locking rod is perpendicular to the sliding direction of the support frame;

[0040] A locking block is fixedly connected to the locking rod and extends toward one side of the driven slider; a slot is provided on the block body of the driven slider located at the lower portion corresponding to the locking block;

[0041] A locking pad is provided at the lower end of the moving path of the load-bearing rod in use, and is slidably connected to the structure of the load-bearing support portion in the vertical direction. At least one supporting spring is provided at the lower end of the locking pad; an arc-shaped groove is provided on one side of the block body of the locking pad;

[0042] One end of the locking rod is provided with a guide block, which is a sphere and is slidably connected to the arc groove.

[0043] Preferably, the load-bearing support portion further comprises:

[0044] A barbell guide groove is provided corresponding to each barbell plate and is a vertical guide groove opened in the cavity; an observation port is provided at the lower part of the barbell guide groove.

[0045] Compared with the existing technology, the present invention has the following advantages: The embodiment of the present invention stores the training barbell plate in the cavity of the weight support part. The first support part and the second support part of the support mechanism are combined to provide different structures for the rising and falling processes during the push-up process. The first support part is composed of a first support plate and a first limit plate. If the user cannot withstand the impact of the barbell plate and causes the weight bar to drop, the first support plate can support the weight bar with the help of the limit plate, thereby ensuring the safety of the user.

[0046] The second support part adopts a second support plate combined with a torsion spring structure. The second support plate transmits the force of the torsion spring to the descending load-bearing rod, which plays a buffering role during descent and also improves the safety of the user during training. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0048] Figure 2 This is a schematic diagram of the connection structure of the counterweight assembly according to an embodiment of the present application;

[0049] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of an embodiment of the present application;

[0050] Figure 4 This is a schematic diagram of the internal state of the cavity according to an embodiment of the present application;

[0051] Figure 5 A schematic diagram of the support mechanism and linkage mechanism of an embodiment of the present application;

[0052] Figure 6 This is a schematic diagram of the locking mechanism of an embodiment of the present application;

[0053] Figure 7 for Figure 6 A partial enlarged view of;

[0054] Figure 8 This is a schematic diagram of the transverse cross-sectional structure of an embodiment of the present application.

[0055] In the picture:

[0056] 1. Body support; 11. Lower body support; 12. Trunk support; 13. Arm support; 131. Arm slot;

[0057] 2. Weight-bearing assembly; 21. Weight-bearing rod; 211. Grip rod; 212. Adjustment rod; 22. Counterweight assembly

[0058] 3. load-bearing support portion; 31. cavity; 32. support frame;

[0059] 33. First support portion; 331. First support plate; 332. First limiting plate;

[0060] 34. Second support portion; 341. Second support plate;

[0061] 351, active rod; 352, driven rod; 353, driven slider; 3531, driven slide; 3532, slot;

[0062] 361, locking rod; 3611, locking slide; 3612, guide block; 362, locking block

[0063] 37. Barbell guide groove; 371. Observation port. DETAILED DESCRIPTION

[0064] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0065] See also Figure 1-Figure 3 , this application provides the following technical solutions:

[0066] A barbell shoulder press fitness device comprises a body support portion 1, a weight assembly 2, and a weight support portion 3. The body support portion 1 is used to provide a support position for the user's body and is provided with a support area corresponding to the user's sitting position; its function is similar to that of a chair used in seated press training, providing the user with a body position when using the device. The weight assembly 2 serves as a weight for the trainer and comprises a weight bar 21 and a counterweight assembly 22. The weight bar 21 is placed horizontally above the body support portion 1, and the counterweight assembly 22 comprises a plurality of barbell plates detachably connected to both ends of the weight bar 21. The weight-bearing support part 3 is used to provide protection for the user during use. It includes a cavity 31 for accommodating the counterweight assembly 22 at positions corresponding to both sides of the human body support part 1. The counterweight assembly 22 is arranged in the cavity 31. Both ends of the weight rod 21 extend into the cavity 31 of the weight-bearing support part 3, and the weight rod 21 can drive the counterweight assembly 22 to rise or fall in the cavity 31; the weight-bearing support part 3 also includes a support mechanism for supporting the weight rod 21.

[0067] This solution stores the barbell plate used during use, that is, the counterweight assembly 22, inside the cavity 31, and then combines this with a support mechanism that can provide support force to the weight-bearing rod 21 as protection during exercise, thereby improving the safety of the user when performing fitness activities.

[0068] Based on the above embodiment, the human body support part 1 includes a lower body support part 11, a trunk support part 12, and an arm support part 13. The lower body support part 11 is used to provide support for the user's buttocks when sitting; the trunk support part 12 is provided on one side of the lower body support part 11 to provide support for the user's back; and the arm support parts 13 are provided on two parallel sides adjacent to the lower body support part 11 and the trunk support part 12 to provide support for the user's arms when performing push-ups.

[0069] The upper side of the lower body support part 11 is a downwardly recessed area, in which a cushion or seat plate is provided; the torso support part 12 includes a backrest with an arc, and the backrest is provided with a number of ventilation holes; the arm support part 13 is arranged in an "eight"-shaped structure on both sides of the lower body support part 11, and one end of the small opening is arranged close to the torso support part 12; the upper end of the arm support part 13 is provided with an arm groove 131 corresponding to the human arm, and the arm groove 131 is a lower groove, and its groove bottom is an arc-shaped surface, and the arm groove 131 is provided with an open mouth on the end facing the torso support part 12, and an arc-shaped transition surface from the groove bottom to the groove top is provided on the end away from the torso support part 12.

[0070] When exercising, the user sits on the lower body support 11, leans against the torso support 12, and places their elbows in the arm slots 131 of the arm support 13. This allows for a push-up exercise. The aforementioned structure of the arm slots 131 takes into account the ease with which the human arm positions itself during a push-up exercise. Furthermore, the curved transition surface at one end of the arm slots 131 prevents the user's elbow from sliding out of the slots 131, thereby enhancing the safety of the exerciser.

[0071] Based on the above implementation plan, see Figure 2 The weight-bearing rod 21 includes a gripping rod 211, which is arranged above the human body support portion 1 and is used for the user to hold when performing a push-up. Adjustment rods 212 are provided at both ends of the gripping rod 211. The adjustment rods 212 are sleeved and slidably connected to the gripping rod 211, and the sliding direction of the sliding connection is the axial direction of the adjustment rod 212. A hole is provided in the middle of the barbell plate of the weight assembly 22 corresponding to the adjustment rod 212. The training weight is adjusted by passing the adjustment rod 212 through different numbers of barbell plates.

[0072] A slot slider combination is provided between the holding rod 211 and the rod body of the adjusting rod 212, and the sliding direction of the slot slider combination is the axial direction of the holding rod 211; an external thread is provided on the rod body of the adjusting rod 212; the load-bearing rod 21 also includes an adjustment seat 213, and an adjustment seat 213 is provided corresponding to each adjusting rod 212, and the adjustment seat 213 is threadedly connected to the adjusting rod 212; the load-bearing support part 3 is provided with an adjustment seat limiting structure corresponding to the adjustment seat 213, and the adjustment seat limiting structure satisfies the requirement that the adjustment seat 213 can rise or fall in the vertical direction, and the adjustment seat 213 will not rotate relative to the axial direction of the adjusting rod 212.

[0073] In this solution, the adjustment seat 213 is a rectangular block with a threaded hole in the middle. A vertical slide groove is provided in the cavity 31 corresponding to the adjustment seat 213. The outer wall of the adjustment seat 213 is in contact with the slide groove, thereby ensuring that the adjustment seat 213 can move up and down along the slide groove without rotating.

[0074] When the counterweight needs to be adjusted, the user rotates the gripping rod 211, thereby driving the adjusting rod 212 to rotate. Under the threaded connection of the adjusting seat 213, the adjusting rod 212 moves along its own axis, thereby achieving the connection with different numbers of barbell plates.

[0075] As a further solution, anti-slip bumps are distributed on the outside of the gripping rod 211 .

[0076] Based on the above implementation plan, see Figure 4 and Figure 5 The support mechanism of the load-bearing support part 3 includes a support frame 32, which is a "U"-shaped frame arranged in the cavity 31. A first support part 33 and a second support part 34 are respectively arranged on both sides of the support frame 32. The first support part 33 is used to provide protection when the load-bearing rod 21 moves upward; it includes a plurality of first support plates 331, and the first support plates 331 are distributed in an array in the vertical direction. One side of the first support plate 331 is hinged to the frame body of the support frame 32. Corresponding to each first support plate 331 is a first limiting plate 332, which is fixedly connected to the support frame 32, and the first limiting plate 332 is located on the lower side of the first support plate 331. A groove corresponding to the load-bearing rod 21 is provided on the upper side of the first support plate 331, and an upwardly extending plate is provided on the side of the first support plate 331 facing the user.

[0077] The second support part 34 is arranged opposite to the first support part 33, and there is a gap between the second support part 34 and the first support part 33. The weight-bearing rod 21 is located between the second support part 34 and the first support part 33 when in use; the second support part 34 is used to provide supporting force when the user drives the weight-bearing rod 21 to move downward; the second support part 34 includes a second support plate 341, one side of the plate body of the second support plate 341 is hinged to the support frame 32, and the other side extends toward the direction of the first support part 33; a torsion spring is provided at the hinge between the second support plate 341 and the support frame 32, and in the natural state of the torsion spring, the second support plate 341 is in a horizontal state.

[0078] The side of the fitness machine that the user faces when in use is the front side, and the side that the user faces away from is the rear side; the first support portion 33 is provided at the rear of the support frame 32 , and the second support portion 34 is provided at the front of the support frame 32 .

[0079] When the weight-bearing bar 21 moves upward under the user's push, the body of the weight-bearing bar 21 pushes the first support plate 331 to rotate upward as the user applies force, without affecting the weight-bearing bar 21. If the user accidentally loses strength or is unable to bear the weight, the weight-bearing bar 21 may fall. In this case, the weight-bearing bar 21 will fall into the notch of the first support plate 331 and be stably supported by the first limit plate 332, thereby ensuring the safety of the user.

[0080] When the user completes the push-up and moves the weight rod 21 downward, the position of the weight rod 21 can be slightly adjusted to correspond to the second support part 34. As the weight rod 21 descends, each second support plate 341 can provide the weight rod 21 with the support force of its corresponding torsion spring, thereby playing a buffering role.

[0081] Based on the above implementation plan, see Figure 4 and Figure 5 Considering that the user in the above scheme still needs to adjust the position during the lifting and lowering of the load-bearing rod 21, the present structural scheme adds a linkage mechanism that can drive the support frame 32 to move horizontally to solve the above problem. A space is provided in the cavity 31 corresponding to the support frame to allow it to slide, and the support frame 32 can slide back and forth in the direction from the front to the back in the cavity 31. The linkage mechanism includes an active rod 351 and a driven rod group. The active rod 351 is provided at the upper part of the cavity 31, and an active rod groove corresponding to 351 is provided in the cavity 31; one end of the active rod 351 extends above the moving path of the load-bearing rod 21, and the active rod 351 can rise under the pushing force of the load-bearing rod 21; the driven rod group is provided on the rear side of the support frame 32, including two driven rods 352. The driven rods 352 are arranged in a symmetrical structure. One end of each driven rod 352 is hinged to the rear side of the support frame 32, and the other end extends toward the rear of the support frame 32. Each driven rod 352 is provided with a driven slider 353, hinged to the end of the driven rod 352 away from the support frame 32. A vertical driven slot 3531 is defined within the cavity 31, corresponding to the driven slider 353. The driven slider 353 is slidably connected to the driven slot 3531. A return spring 354 is also provided on the rear side of the support frame 32, interposed between the inner wall of the cavity 31 and the support frame 32. An upwardly concave notch is defined at the end of the active rod 351, corresponding to the load-bearing rod 21.

[0082] With the structure of this solution, when the load-bearing rod 21 is pushed upward, it pushes to the top and lifts the active rod 351. As the active rod 351 moves, it drives the upper driven slider 353 upward, thereby pulling one of the driven rods 352 to move. The other driven rod 352 changes angle accordingly, pulling the support frame 32 toward the rear. As one implementation form of this solution, the driven slider 353 and the driven slide 3531 are corresponding "T"-shaped blocks and "T"-shaped slots.

[0083] With this structural solution, after the upward push is completed, the support frame 32 will move backward, and at this time the second support portion 34 can move closer to the bottom of the load-bearing rod 21.

[0084] Based on the above implementation plan, see Figures 6 and 7The load-bearing support portion 3 also includes a locking mechanism for locking the movable position of the support frame 32. The locking mechanism includes a locking rod 361 disposed at the bottom of the cavity 31. The locking rod 361 can slide horizontally, with the sliding direction of the locking rod 361 being perpendicular to the sliding direction of the support frame 32. A locking block 362 is fixedly connected to the locking rod 361 and extends toward one side of the driven slider 353. A slot 3532 is provided on the block of the driven slider 353 located at the bottom, corresponding to the locking block 362. The upper side of the locking block 362 is an inclined surface, and the lower side is a flat surface. A locking pad 363 is provided at the lower end of the moving path of the load-bearing bar 21 when in use. The locking pad 363 is vertically slidably connected to the structure of the load-bearing support portion 3. At least one support spring is provided at the lower end of the locking pad 363. An arcuate slot 3631 is provided on one side of the block of the locking pad 363. A guide block 3612 is provided at one end of the locking rod 361 . The guide block 3612 is a sphere and is slidably connected to the arc groove 3631 .

[0085] Through this structure, when the support frame 32 moves backward driven by the active rod 351, the lower driven slider 353 pushes the locking block 362 from top to bottom, so that the locking block 362 pushes the locking rod 361 to move horizontally, and the locking block 362 retracts into the locking slide groove 3611, which will not affect the driven slider 353. At this time, the guide block 3612 is located at the bottom position of the arc groove 3631.

[0086] As the driven slider 353 continues to descend, when the slot 3532 reaches the position of the locking block 362, the locking rod 361, under the return force of the spring of the locking pad 363, cooperates with the vertical movement of the locking pad 363 to produce a horizontal displacement, so that the locking block 362 is ejected into the slot 3532 and inserted into the slot 3532. Because the lower surface of the locking block 362 is flat, it can limit the lower driven slider 353, allowing it to overcome the force of the return spring 354 and keep the entire support frame 32 in the rearward position. This ensures that the load-bearing bar 21 is not affected by the first support portion 33 during its descent.

[0087] When the weight bar 21 reaches the bottom, it contacts the groove on the upper portion of the locking pad 363, pressing the locking pad 363 downward. As the locking pad 363 is pressed downward, it drives the guide block 3612 toward the upper portion of the arcuate groove 3631, causing the locking bar 361 to move away from the driven slider 353, thereby disengaging the locking block 362 from the locking groove 3532. The support frame 32 is then reset by the return spring 354, allowing the next press-up exercise to begin.

[0088] Based on the above implementation plan, see Figure 8The weight-bearing support portion 3 further includes a barbell guide slot 37, one barbell guide slot 37 corresponding to each barbell plate, which is a vertical guide slot opened in the cavity 31; an observation port 371 is provided at the lower portion of the barbell guide slot 37. The observation port 371 is sufficient to allow observation of the connection between the adjustment rod 212 and the barbell plate.

[0089] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A barbell shoulder press fitness equipment, characterized in that: include: A human body support portion (1) is used to provide a support position for the user's body and is provided with a support area corresponding to the user's sitting posture; A weight-bearing assembly (2) comprising a weight-bearing rod (21) and a counterweight assembly (22), wherein the weight-bearing rod (21) is placed horizontally above the human body support portion (1), and the counterweight assembly (22) comprises a plurality of barbell plates detachably connected to both ends of the weight-bearing rod (21); The weight-bearing support portion (3) comprises a cavity (31) for accommodating the weight-bearing assembly (22) at positions corresponding to both sides of the human body support portion (1), the weight-bearing assembly (22) being arranged in the cavity (31), the two ends of the weight-bearing rod (21) extending into the cavity (31) of the weight-bearing support portion (3), and the weight-bearing rod (21) can drive the weight-bearing assembly (22) to rise or fall in the cavity (31); the weight-bearing support portion (3) also comprises a supporting mechanism for supporting the weight-bearing rod (21); the supporting mechanism of the weight-bearing support portion (3) comprises: A support frame (32) is disposed in the cavity (31); A linkage mechanism is used to drive the support frame (32) to move; the linkage mechanism comprises: An active rod (351) is arranged at the upper portion of the cavity (31), and an active rod groove corresponding to the active rod (351) is provided in the cavity (31); one end of the active rod (351) extends above the moving path of the load-bearing rod (21), and the active rod (351) can be raised under the pushing force of the load-bearing rod (21); A driven rod assembly is arranged on the rear side of the support frame (32), comprising two driven rods (352), the driven rods (352) being arranged in a symmetrical structure, one end of each driven rod (352) being hinged to the rear side of the support frame (32), and the other end extending toward the rear of the support frame (32); A driven slider (353) is provided corresponding to each driven rod (352) and is hinged to one end of the driven rod (352) away from the support frame (32); a driven slide groove (3531) in a vertical direction is provided in the cavity (31) corresponding to the driven slider (353), and the driven slider (353) is slidably connected to the driven slide groove (3531); the driven slider (353) located at the upper portion is fixedly connected to one end of the active rod (351); A return spring (354) is located on the front side or the rear side of the support frame (32) and is arranged between the inner wall of the cavity (31) and the support frame (32).

2. The barbell shoulder press fitness equipment according to claim 1, characterized in that: The human body support part (1) comprises: A lower body support portion (11) is used to provide support for the buttocks of a user in a sitting position; A trunk support portion (12) is provided on one side of the lower body support portion (11) and is used to provide support for the user's back; The arm support portion (13) is arranged on two parallel sides adjacent to the lower body support portion (11) and the trunk support portion (12), and is used to provide support force to the arms of the user when performing upward push-up.

3. The barbell shoulder press fitness equipment according to claim 2, characterized in that: The upper side of the lower body support portion (11) is a downwardly concave area, in which a seat cushion is provided; The trunk support portion (12) includes a backrest with an arc, and a plurality of ventilation holes are provided on the backrest; The arm support portion (13) is arranged in an "eight"-shaped structure on both sides of the lower body support portion (11), and one end of the small opening is arranged close to the trunk support portion (12); the upper end of the arm support portion (13) is provided with an arm groove (131) corresponding to the human arm, and the arm groove (131) is a lower groove, and its groove bottom is an arc-shaped surface, and the arm groove (131) is provided with an open mouth at one end facing the trunk support portion (12), and an arc-shaped transition surface from the groove bottom to the groove top is provided at the end away from the trunk support portion (12).

4. The barbell shoulder press fitness equipment according to claim 1, characterized in that: The load-bearing rod (21) comprises: A gripping rod (211) is arranged across the body support portion (1) and is used for a user to hold when performing a push-up; An adjusting rod (212) is provided at both ends of the holding rod (211), is sleeved and slidably connected to the holding rod (211), and the sliding direction of the sliding connection is the axial direction of the adjusting rod (212); A socket is provided in the middle of the barbell disc of the counterweight assembly (22) corresponding to the adjustment rod (212).

5. The barbell shoulder press fitness equipment according to claim 4, characterized in that: A slide block assembly is provided between the gripping rod (211) and the rod body of the adjusting rod (212), and the sliding direction of the slide block assembly is the axial direction of the gripping rod (211); the rod body of the adjusting rod (212) is provided with an external thread; the load-bearing rod (21) further comprises: An adjustment seat (213) is provided corresponding to each adjustment rod (212), and the adjustment seat (213) is threadedly connected to the adjustment rod (212); the load-bearing support portion (3) is provided with an adjustment seat limiting structure corresponding to the adjustment seat (213), and the adjustment seat limiting structure satisfies the requirement that the adjustment seat (213) can be raised or lowered in the vertical direction, and the adjustment seat (213) will not rotate relative to the axial direction of the adjustment rod (212).

6. The barbell shoulder press fitness equipment according to claim 1, characterized in that: The support mechanism of the load-bearing support portion (3) further comprises: A first support portion (33) is connected to the support frame (32) and is used to provide protection when the load-bearing rod (21) moves upward; the first support portion (33) includes: A plurality of first support plates (331) are distributed in an array in the vertical direction, and one side of the first support plates (331) is hinged to the frame body of the support frame (32); A first limiting plate (332) is provided corresponding to each first supporting plate (331), the first limiting plate (332) is fixedly connected to the supporting frame (32), and the first limiting plate (332) is located on the lower side of the first supporting plate (331).

7. The barbell shoulder press fitness equipment according to claim 6, characterized in that: A groove corresponding to the load-bearing rod (21) is provided on the upper side of the first support plate (331), and a plate body extending upward is provided on the side of the first support plate (331) facing the user.

8. The barbell shoulder press fitness equipment according to claim 5, characterized in that: The support mechanism of the load-bearing support portion (3) further comprises: The second support portion (34) is arranged on the support frame (32), the second support portion (34) and the first support portion (33) are arranged opposite to each other, a distance is left between the second support portion (34) and the first support portion (33), and the load-bearing rod (21) is located between the second support portion (34) and the first support portion (33) when in use; the second support portion (34) is used to provide a supporting force when the user drives the load-bearing rod (21) to move downward; the second support portion (34) includes: The second support plate (341) has one side of its plate body hinged to the support frame (32), and the other side extends toward the first support portion (33); a torsion spring is provided at the hinge between the second support plate (341) and the support frame (32), and in the natural state of the torsion spring, the second support plate (341) is in a horizontal state.

9. The barbell shoulder press fitness equipment according to claim 7, characterized in that: The side that the user faces when the fitness device is in use is the front side, and the side that the user faces away is the rear side; the support frame (32) can slide back and forth in the direction from the front side to the rear side within the cavity (31); The first support portion (33) is arranged at the rear of the support frame (32), and the second support portion (34) is arranged at the front of the support frame (32).

10. The barbell shoulder press fitness equipment according to claim 9, characterized in that: The load-bearing support portion (3) further comprises: A locking mechanism is used to lock the moving position of the support frame (32); the locking mechanism comprises: A locking rod (361) is provided at the lower portion of the cavity (31) and is capable of sliding in a horizontal direction, wherein the sliding direction of the locking rod (361) is perpendicular to the sliding direction of the support frame (32); A locking block (362) is fixedly connected to the locking rod (361) and extends toward one side of the driven slider (353); a slot (3532) is provided on the block of the driven slider (353) at the bottom thereof, corresponding to the locking block (362); A locking pad (363) is provided at the lower end of the moving path of the load-bearing rod (21) when in use, and is slidably connected to the structure of the load-bearing support portion (3) in the vertical direction. At least one supporting spring is provided at the lower end of the locking pad (363); an arc-shaped groove (3631) is provided on one side of the body of the locking pad (363); A guide block (3612) is provided at one end of the locking rod (361), the guide block (3612) being a sphere, and the guide block (3612) is slidably connected to the arc-shaped groove (3631).

11. The barbell shoulder press fitness equipment according to claim 8, wherein: The load-bearing support portion (3) further comprises: A barbell guide groove (37) is provided corresponding to each barbell plate and is a vertical guide groove opened in the cavity (31); an observation port (371) is provided at the lower portion of the barbell guide groove (37).

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