Exercise device for physical training and use method thereof

Abstract

The invention discloses an exercise device for physical training and a using method thereof, and relates to the technical field of exercise devices. The device comprises a rack, a placing groove and a barbell. The bed is installed on the rack, a trainer can lie on the bed, the bed is provided with the pedals, the pedals are located at the positions of the feet of the trainer, the trainer can tread the pedals when the two arms cannot support the barbell, the pedals can immediately drive the racks to move through the swing rods after being treaded, and the racks can drive the linkage rods to rotate; the vertical rod is meshed with the worm gear through the worm, the worm gear finally enables the connecting rod to rotate, the connecting rod pushes the clamping head through the vertical frame when rotating, the clamping head can stretch out of the sliding barrel to be connected with the sliding frame, and the sliding frame can be limited; therefore, the barbell is limited and kept still, the barbell cannot get off the road to press a trainer, and the safety of the trainer is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of exercise devices, and in particular to an exercise device for physical fitness training and its usage method. Background Art

[0002] Physical fitness is the basic motor ability of the human body manifested through motor qualities such as strength, speed, endurance, coordination, flexibility, and agility, and is an important component of an athlete's competitive ability. The level of physical fitness is closely related to the morphological characteristics and functional characteristics of the human body. The morphological characteristics of the human body are the structural basis of its physical fitness, and the functional characteristics of the human body are the biological functional basis of its physical fitness.

[0003] When athletes conduct physical fitness training, they usually use a treadmill or a weightlifting machine for practice. In particular, the use of a weightlifting machine can increase the upper body strength of athletes. However, during the use of a weightlifting machine, athletes need to perform a bench press. When performing a bench press, the arms will hold the barbell above the body. Some athletes cannot judge the strength of their own arms. When pushing a heavier barbell, the barbell will press down on the arms. When the arms are bent under pressure, the barbell will press on the chest or neck. If it is not removed in time, there will be a life-threatening situation, and it is difficult to ensure safety during training with a weightlifting machine. Summary of the Invention

[0004] One of the purposes of the present application is to provide an exercise device for physical fitness training and its usage method.

[0005] To achieve the above object, the technical solution adopted in the present application is: an exercise device for physical fitness training, including a frame, a placement groove, and a barbell. A sliding cylinder is provided on the frame. A sliding frame is slidably connected to the outside of the sliding cylinder. A bayonet is provided on the sliding frame. A clamping head is telescopically connected in the sliding cylinder, and the clamping head is clamped in the bayonet of the sliding frame. A barbell is provided on the sliding frame. A lying bed is provided on the frame below the barbell. A pedal is rotatably connected to the front end of the lying bed. A transmission belt is provided in the output direction of the pedal. A vertical rod is provided on the transmission belt. A connecting rod is provided in the output direction of the vertical rod, and the connecting rod is connected to the input end of the clamping head.

[0006] Preferably, a side frame is welded on the frame. A vertical rod is rotatably connected to the side frame. The vertical rod is vertically arranged on the side frame. The lower end of the vertical rod is located in the space between the side frame and the frame. A transmission belt is sleeved on the vertical rod between the side frame and the frame, and the transmission belt is arranged in a T shape as a whole.

[0007] Preferably, a guide wheel is provided on the frame. The guide wheel is vertically arranged on the frame. The transmission belt is lapped on the guide wheel. The transmission belt at the position of the guide wheel is bent in an L shape. One end of the transmission belt is located below the lying bed. An inner frame is provided on the lying bed. The transmission belt below the lying bed passes through the inner frame.

[0008] Preferably, a linkage rod is rotatably connected to the side edge of the inner frame. The linkage rod is vertically arranged on the inner frame. A transmission belt is sleeved on the upper end of the linkage rod. A gear is welded to the lower end of the linkage rod. The gear is meshed with a rack. The rack is integrally U-shaped and is slidably connected to the inner frame.

[0009] Preferably, a support rod is rotatably connected to the rack. One end of the support rod is rotatably connected to a swing rod. The swing rod is integrally U-shaped. Pedals are connected to both ends of the swing rod. The support rods at the positions of the rack and the swing rod are arranged obliquely. The position where the support rod is connected to the swing rod is below the rack.

[0010] Preferably, a worm gear is provided on the connecting rod inside the sliding cylinder. The worm gear is meshed with a worm. The worm is welded to a vertical rod. The worm and the vertical rod are coaxially arranged. The worm is located outside the frame.

[0011] Preferably, a vertical frame is welded to the side wall of the connecting rod. An inclined frame is rotatably connected to the vertical frame. The inclined frame is arranged obliquely. The other end of the inclined frame is rotatably connected to a connecting frame.

[0012] Preferably, a connecting frame is connected to the chuck. A baffle is provided at the connection position between the chuck and the connecting frame. The diameter of the baffle is larger than the diameter of the chuck.

[0013] Preferably, a return spring is sleeved on the chuck. The return spring is located on the chuck of the sliding cylinder. One end of the return spring is hooked on the baffle.

[0014] To achieve the above object, another technical solution adopted by the present application is: a use method of a sports device for physical training, including the following steps:

[0015] S1: When pedals are installed on the lying bed of the frame, they can be stepped on by the training personnel. The pedals are connected to the rack through the swing rod and the support rod. When stepping on the pedals, the whole linkage rod can be driven to rotate. The transmission belt on the linkage rod can then rotate. The transmission belt is connected to the vertical rod. After the vertical rod is driven, the worm will drive the worm gear.

[0016] S2: The worm gear is connected to the connecting rod. After the connecting rod is driven, it will drive the vertical frame to push the inclined frame. The inclined frame can then move towards the connecting frame. During the movement, the inclined frame can push the connecting frame. The connecting frame will finally drive the chuck to move out of the sliding cylinder. The chuck can then be stuck into the bayonet of the sliding frame. The sliding frame can be limited. The barbell on the sliding frame will finally stop. The barbell can then be moved away from the athlete.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows:

[0018] A sports device for physical training and its usage method. By setting a lying bed on a frame, the lying bed can be used for a trainer to lie on and perform bench presses on a barbell. There are pedals on the lying bed. The trainer can place their feet on the pedals during training or choose to place them on the ground on both sides of the lying bed. The pedals are located at the position of the feet, and the feet can step on the pedals at any time. The pedals are connected to a support frame through swing rods. The support frame is connected to a rack. When the pedals rotate, they will drive the swing rods to push against the support rods. The lower position of the support rods will move towards the rack position, thereby changing the position of the rack during movement. The rack can then cause a linkage rod to rotate through a gear. The transmission belt on the linkage rod can ultimately drive. The transmission belt can control the rotation of a vertical rod through connection with the vertical rod. The worm on the vertical rod is connected to a worm gear, and the vertical rod can drive the worm gear. The connecting rod set on the worm gear can rotate. When the connecting rod rotates, it can push out a chuck. The chuck can be inserted into the bayonet of a sliding frame. The sliding frame will not move horizontally or rotate, and the position of the sliding frame can be restricted. A barbell is fixedly connected to the sliding frame, and the barbell can be restricted, thereby ensuring that the barbell will not fall when the trainer's arms cannot support it, thus protecting the safety of the trainer.

[0019] A sports device for physical training and its usage method. By setting a sliding cylinder on a frame, a sliding frame can slide and rotate on the sliding cylinder. The sliding frame is fixedly connected to a barbell. Due to the different bench press heights of the barbell and the different swinging amplitudes of the trainer's arms, the sliding frame will move on the sliding cylinder to cooperate with the swinging position of the barbell. The barbell will not break away from the sliding cylinder at any position during bench pressing, thereby ensuring the connection between the sliding cylinder and the sliding frame. There is a bayonet on the sliding frame, which is opened along the outer circumference of the sliding frame. The sliding frame can be clamped by a chuck at any position on the sliding cylinder. The chuck is arranged in the sliding cylinder. There is an inclined frame on the connecting frame of the chuck, and a vertical frame is connected to the inclined frame. When the vertical frame rotates following the connecting rod, it will push the connecting frame outwards through the inclined frame, and finally the chuck will extend out of the sliding cylinder. The chuck can restrict the sliding frame. A return spring is sleeved on the chuck in the sliding cylinder. In the initial state, the chuck will be pushed by the return spring and retract into the sliding cylinder. After being driven by the connecting rod, the return spring will be compressed, and the chuck will extend out of the sliding cylinder. After the connecting rod returns, the return spring can drive the chuck to reset, thereby ensuring that the chuck can be pulled out of the bayonet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall structure of the present invention Figure I 。

[0021] Figure 2 Schematic diagram of the overall structure of the present invention Figure II 。

[0022] Figure 3 Schematic connection diagram of the transmission belt of the present invention.

[0023] Figure 4 This is a schematic structural diagram of the vertical rod in the present invention.

[0024] Figure 5 This is a schematic structural diagram of the chuck in the present invention.

[0025] Figure 6 For the present invention Figure 2 Schematic enlarged structural diagram of area A.

[0026] Figure 7 For the present invention Figure 3 Schematic enlarged structural diagram of area B.

[0027] Figure 8 For the present invention Figure 4 Schematic enlarged structural diagram of area C.

[0028] In the figure: 1, frame; 2, placement groove; 3, barbell; 4, lying bed; 5, pedal; 6, guide wheel; 7, transmission belt; 8, side frame; 9, vertical rod; 10, linkage rod; 11, inner frame; 12, gear; 13, rack; 14, swing rod; 15, support rod; 16, worm gear; 17, worm; 18, sliding cylinder; 19, sliding frame; 20, bayonet; 21, connecting rod; 22, inclined frame; 23, vertical frame; 24, connecting frame; 25, return spring; 26, chuck; 27, baffle. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] As Figures 1 to 8As shown in the figure, the present invention provides an exercise device for physical training, including a frame 1, a placement groove 2 and a barbell 3. A sliding cylinder 18 is provided on the frame 1. A sliding frame 19 is slidably connected to the outside of the sliding cylinder 18. A bayonet 20 is provided on the sliding frame 19. A chuck 26 is telescopically connected in the sliding cylinder 18. The chuck 26 is clamped in the bayonet 20 of the sliding frame 19. A barbell 3 is provided on the sliding frame 19. A lying bed 4 is provided on the frame 1 below the barbell 3. The front end of the lying bed 4 is rotatably connected to a pedal 5. A transmission belt 7 is provided in the output direction of the pedal 5. A vertical rod 9 is provided on the transmission belt 7. A connecting rod 21 is provided in the output direction of the vertical rod 9. The connecting rod 21 is connected to the input end of the chuck 26. By installing the lying bed 4 on the frame 1, the trainer can lie on the lying bed 4. The pedal 5 is provided on the lying bed 4 and is located at the position of the trainer's feet. When the trainer cannot support the barbell 3 with both arms, the trainer can step on the pedal 5. After the pedal 5 is stepped on, it will immediately drive the rack 13 to move through the swing rod 14. The rack 13 will drive the linkage rod 10 to rotate. The transmission belt 7 can be driven by the linkage rod 10 to rotate. Finally, the transmission belt 7 will drive the vertical rod 9 to rotate. The vertical rod 9 meshes with the worm gear 16 through the worm 17. Finally, the worm gear 16 will cause the connecting rod 21 to rotate. When the connecting rod 21 rotates, it will push the chuck 26 through the vertical frame 23. The chuck 26 can extend out of the sliding cylinder 18 and be connected to the sliding frame 19. The sliding frame 19 will be restricted, so that the barbell 3 will be restricted and remain stationary. The barbell 3 will not fall down and press the trainer, thus ensuring the safety of the trainer.

[0031] A side frame 8 is welded on the frame 1. A vertical rod 9 is rotatably connected to the side frame 8. The vertical rod 9 is vertically arranged on the side frame 8. The lower end of the vertical rod 9 is located in the space between the side frame 8 and the frame 1. A transmission belt 7 is sleeved on the vertical rod 9 between the side frame 8 and the frame 1. The transmission belt 7 is arranged in a T shape as a whole. Through the setting of the side frame 8, the restriction of the vertical rod 9 can be realized. The vertical rod 9 will keep rotating at the position of the side frame 8, and the transmission belt 7 can drive the vertical frame 23.

[0032] A guide wheel 6 is provided on the frame 1. The guide wheel 6 is vertically arranged on the frame 1. The transmission belt 7 is lapped on the guide wheel 6. The transmission belt 7 at the position of the guide wheel 6 is bent in an L shape. One end of the transmission belt 7 is located below the lying bed 4. An inner frame 11 is provided on the lying bed 4. The transmission belt 7 below the lying bed 4 passes through the inner frame 11. Through the guide wheel 6, the transmission belt 7 can be guided, and the transmission belt 7 will be arranged below the lying bed 4, avoiding the transmission belt 7 being exposed outside the lying bed 4 and affecting the activities of the trainer.

[0033] In implementation, a lying bed 4 is arranged on the rack 1. The lying bed 4 is for the trainer to lie on, so as to perform bench press on the barbell 3. A pedal 5 is arranged on the lying bed 4. The trainer can place the feet on the pedal 5 during training, or choose to place them on the ground on both sides of the lying bed 4. The pedal 5 is located at the position of the feet, and the feet can step on the pedal 5 at any time. The pedal 5 is connected to the support frame through a swing rod 14. The support frame is connected to a rack 13. When the pedal 5 rotates, it will drive the swing rod 14 to push the support rod 15. The lower position of the support rod 15 will move towards the rack 13, thereby changing the position of the rack 13 during the movement. The rack 13 can enable the linkage rod 10 to rotate through the gear 12. The transmission belt 7 on the linkage rod 10 can finally be driven. The transmission belt 7 can control the rotation of the vertical rod 9 by being connected to the vertical rod 9. The worm 17 on the vertical rod 9 is connected to the worm gear 16. The vertical rod 9 can drive the worm gear 16. The connecting rod 21 arranged on the worm gear 16 can rotate. When the connecting rod 21 rotates, it can push out the chuck 26. The chuck 26 can be inserted into the bayonet 20 of the carriage 19. The carriage 19 will not move horizontally or rotate. The position of the carriage 19 can be restricted. The barbell 3 is fixedly connected to the carriage 19. The barbell 3 can be restricted, so as to ensure that when the trainer's arms cannot support the barbell 3, the barbell 3 will not fall, thus protecting the safety of the trainer.

[0034] A linkage rod 10 is rotatably connected to the side edge of the inner frame 11. The linkage rod 10 is vertically arranged on the inner frame 11. The upper end of the linkage rod 10 is sleeved with a transmission belt 7. The lower end of the linkage rod 10 is welded with a gear 12. The gear 12 is meshed and connected with a rack 13. The rack 13 is integrally arranged in a U shape. The rack 13 is slidably connected to the inner frame 11. Through the linkage rod 10, the connection with the transmission belt 7 can be realized. When the gear 12 is arranged on the linkage rod 10, the rack 13 can drive the gear 12 to rotate, so that the linkage rod 10 drives the transmission belt 7 to rotate.

[0035] A support rod 15 is rotatably connected to the rack 13. One end of the support rod 15 is rotatably connected to a swing rod 14. The swing rod 14 is integrally arranged in a U shape. Both ends of the swing rod 14 are connected with a pedal 5. The support rod 15 located at the positions of the rack 13 and the swing rod 14 is arranged obliquely. The position where the support rod 15 is connected to the swing rod 14 is below the rack 13. By installing the swing rod 14 on the pedal 5, the pedal 5 can drive the swing rod 14 to move. The support rod 15 is connected to the swing rod 14, and the other end of the support rod 15 is connected to the rack 13. When the swing rod 14 follows the pedal 5 to move, it will drive the support rod 15 to move at the same time. The support rod 15 can drive the rack 13 to move. The rack 13 can drive the gear 12 to rotate during the movement, and finally make the linkage rod 10 rotate.

[0036] A worm gear 16 is provided on a connecting rod 21 inside a sliding cylinder 18. The worm gear 16 meshes with a worm 17. The worm 17 is welded to a vertical rod 9. The worm 17 and the vertical rod 9 are coaxially arranged, and the worm 17 is located outside the frame 1. By providing the worm 17 on the vertical rod 9, when the worm 17 rotates following the vertical rod 9, it can drive the worm gear 16 to rotate. A connecting rod 21 is provided on the worm gear 16, and the connecting rod 21 can achieve transmission.

[0037] A vertical frame 23 is welded to the side wall of the connecting rod 21. An inclined frame 22 is rotatably connected to the vertical frame 23. The inclined frame 22 is arranged obliquely. The other end of the inclined frame 22 is rotatably connected to a connecting frame 24. When the vertical frame 23 is installed on the connecting rod 21, the vertical frame 23 can move following the connecting rod 21. When the vertical frame 23 moves, it can drive the inclined frame 22 to move towards the connecting frame 24, and the inclined frame 22 can push the connecting frame 24.

[0038] A connecting frame 24 is connected to a chuck 26. A baffle 27 is provided at the connection position between the chuck 26 and the connecting frame 24. The diameter of the baffle 27 is larger than the diameter of the chuck 26. When the connecting frame 24 is pushed by the inclined frame 22, it will drive the chuck 26 to move at the same time. The chuck 26 can extend out of the sliding cylinder 18, and the chuck 26 can be inserted into a bayonet 20 of a sliding frame 19.

[0039] A return spring 25 is sleeved on the chuck 26. The return spring 25 is located on the chuck 26 of the sliding cylinder 18, and one end of the return spring 25 is hooked on the baffle 27. By providing the return spring 25, the chuck 26 can be pushed. The chuck 26 can retract into the sliding cylinder 18 when not being pushed, avoiding affecting the movement of the sliding frame 19.

[0040] During implementation, by setting a sliding cylinder 18 on the frame 1, the sliding carriage 19 can slide and rotate on the sliding cylinder 18. The sliding carriage 19 is fixedly connected to the barbell 3. Due to the different bench press heights of the barbell 3 and the different amplitudes of the trainer's arm swing, the sliding carriage 19 will move on the sliding cylinder 18 to cooperate with the swinging position of the barbell 3. The barbell 3 will not break away from the sliding cylinder 18 at any position during bench pressing, thus ensuring the connection between the sliding cylinder 18 and the sliding carriage 19. A bayonet 20 is provided on the sliding carriage 19, and the bayonet 20 is provided along the outer circumference of the sliding carriage 19. The sliding carriage 19 can be clamped by the clamping head 26 at any position on the sliding cylinder 18. The clamping head 26 is arranged inside the sliding cylinder 18. An inclined frame 22 is provided on the connecting frame 24 of the clamping head 26. A vertical frame 23 is connected to the inclined frame 22. When the vertical frame 23 rotates following the connecting rod 21, the connecting frame 24 will be pushed outwards by the inclined frame 22. Eventually, the clamping head 26 will extend out of the sliding cylinder 18, and the clamping head 26 can restrict the sliding carriage 19. A return spring 25 is sleeved on the clamping head 26 inside the sliding cylinder 18. In the initial state, the clamping head 26 will be pushed by the return spring 25 and retracted into the sliding cylinder 18. After being driven by the connecting rod 21, the return spring 25 will be compressed, and the clamping head 26 will extend out of the sliding cylinder 18. After the connecting rod 21 is reset, the return spring 25 can drive the clamping head 26 to reset, thus ensuring that the clamping head 26 can be pulled out of the bayonet 20.

[0041] As Figures 1 - 8 shown, a method for using a sports device for physical training includes the following steps:

[0042] S1: When installing the pedal 5 on the bed 4 of the frame 1, it can be stepped on by the trainer. The pedal 5 is connected to the rack 13 through the swing rod 14 and the support rod 15. When stepping on the pedal 5, the linkage rod 10 can be rotated as a whole, and the transmission belt 7 on the linkage rod 10 can rotate. The transmission belt 7 is connected to the vertical rod 9, and after the vertical rod 9 is driven, the worm 17 can drive the worm gear 16.

[0043] S2: The worm gear 16 is connected to the connecting rod 21. After being driven, the connecting rod 21 will drive the vertical frame 23 to push the inclined frame 22. The inclined frame 22 can move towards the position of the connecting frame 24. During the movement, the inclined frame 22 can push the connecting frame 24. Eventually, the connecting frame 24 will drive the clamping head 26 to move out of the sliding cylinder 18. The clamping head 26 can be clamped into the bayonet 20 of the sliding carriage 19, and the sliding carriage 19 can be limited. The barbell 3 on the sliding carriage 19 will eventually stop, and the barbell 3 can move away from the athlete.

[0044] The working principle of the present invention is as follows: A lying bed 4 is arranged on a frame 1. The lying bed 4 is for a trainer to lie on, so as to perform a bench press on a barbell 3. A pedal 5 is arranged on the lying bed 4. The trainer can place their feet on the pedal 5 during training, or choose to place them on the ground on both sides of the lying bed 4. The pedal 5 is located at the position of the feet, and the feet can step on the pedal 5 at any time. The pedal 5 is connected to a support frame through a swing rod 14. The support frame is connected to a rack 13. When the pedal 5 rotates, it will drive the swing rod 14 to push against a support rod 15. The lower position of the support rod 15 will move towards the position of the rack 13, thereby changing the position of the rack 13 during the movement. The rack 13 can enable a linkage rod 10 to rotate through a gear 12. Finally, a transmission belt 7 on the linkage rod 10 can be driven. The transmission belt 7 can control the rotation of a vertical rod 9 by being connected to the vertical rod 9. A worm 17 on the vertical rod 9 is connected to a worm gear 16. The vertical rod 9 can drive the worm gear 16. A connecting rod 21 arranged on the worm gear 16 can rotate. When the connecting rod 21 rotates, it can push out a chuck 26. The chuck 26 can be inserted into a bayonet 20 of a carriage 19. The carriage 19 will not move horizontally or rotate. The position of the carriage 19 can be restricted. A barbell 3 is fixedly connected to the carriage 19. The barbell 3 can be restricted, so as to ensure that when the trainer's arms cannot support the barbell 3, the barbell 3 will not fall, thereby protecting the safety of the trainer. By arranging a sliding cylinder 18 on the frame 1, the carriage 19 can slide and rotate on the sliding cylinder 18. The carriage 19 is fixedly connected to the barbell 3. Due to the different bench press heights of the barbell 3 and the different amplitudes of the trainer's arm swing, the carriage 19 will move on the sliding cylinder 18 to cooperate with the swinging position of the barbell 3. The barbell 3 will not break away from the sliding cylinder 18 at any position during the bench press, thereby ensuring the connection between the sliding cylinder 18 and the carriage 19. A bayonet 20 is opened on the carriage 19. The bayonet 20 is opened along the outer circumference of the carriage 19. The carriage 19 can be clamped by the chuck 26 at any position on the sliding cylinder 18. The chuck 26 is arranged in the sliding cylinder 18. An inclined frame 22 is arranged on a connecting frame 24 of the chuck 26. A vertical frame 23 is connected to the inclined frame 22. When the vertical frame 23 follows the connecting rod 21 to rotate, it will push the connecting frame 24 outwards through the inclined frame 22. Finally, the chuck 26 will extend out of the sliding cylinder 18. The chuck 26 can restrict the carriage 19. A return spring 25 is sleeved on the chuck 26 in the sliding cylinder 18. In the initial state, the chuck 26 will be pushed by the return spring 25 and retract into the sliding cylinder 18. After being driven by the connecting rod 21, the return spring 25 will be compressed, and the chuck 26 will extend out of the sliding cylinder 18. After the connecting rod 21 is reset, the return spring 25 can drive the chuck 26 to be reset, so as to ensure that the chuck 26 can be pulled out of the bayonet 20.

[0045] The basic principles, main features and advantages of the present application have been described above. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements will occur to the present application, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. An exercise device for physical training, comprising a frame (1), a placement groove (2) and a barbell (3), characterized in that: A sliding cylinder (18) is provided on the frame (1). A sliding frame (19) is slidably connected to the outside of the sliding cylinder (18). A bayonet (20) is formed on the sliding frame (19). A chuck (26) is telescopically connected in the sliding cylinder (18). The chuck (26) is clamped in the bayonet (20) of the sliding frame (19). A barbell (3) is provided on the sliding frame (19). A lying bed (4) is provided on the frame (1) below the barbell (3). A pedal (5) is rotatably connected to the front end of the lying bed (4). A transmission belt (7) is provided in the output direction of the pedal (5). A vertical rod (9) is provided on the transmission belt (7). A connecting rod (21) is provided in the output direction of the vertical rod (9). The connecting rod (21) is connected to the input end of the chuck (26).

2. The exercise device for physical fitness training according to claim 1, characterized in that: A side frame (8) is welded on the frame (1). A vertical rod (9) is rotatably connected to the side frame (8). The vertical rod (9) is vertically arranged on the side frame (8). The lower end of the vertical rod (9) is located in the space between the side frame (8) and the frame (1). A transmission belt (7) is sleeved on the vertical rod (9) between the side frame (8) and the frame (1). The transmission belt (7) is arranged in a T shape as a whole.

3. The exercise device for physical training according to claim 2, characterized in that: A guide wheel (6) is provided on the frame (1). The guide wheel (6) is vertically arranged on the frame (1). The transmission belt (7) is lapped on the guide wheel (6). The transmission belt (7) at the position of the guide wheel (6) is bent in an L shape. One end of the transmission belt (7) is located below the lying bed (4). An inner frame (11) is provided on the lying bed (4). The transmission belt (7) below the lying bed (4) passes through the inner frame (11).

4. A sports device for physical training according to claim 3, characterized in that: A linkage rod (10) is rotatably connected to the side edge of the inner frame (11). The linkage rod (10) is vertically arranged on the inner frame (11). The upper end of the linkage rod (10) is sleeved with the transmission belt (7). A gear (12) is welded to the lower end of the linkage rod (10). The gear (12) is meshed with a rack (13). The rack (13) is arranged in a U shape as a whole. The rack (13) is slidably connected to the inner frame (11).

5. A sports device for physical training according to claim 4, characterized in that: A support rod (15) is rotatably connected to the rack (13). One end of the support rod (15) is rotatably connected to a swing rod (14). The swing rod (14) is arranged in a U shape as a whole. The two ends of the swing rod (14) are connected to the pedal (5). The support rod (15) at the positions of the rack (13) and the swing rod (14) is arranged obliquely. The connection position of the support rod (15) and the swing rod (14) is located below the rack (13).

6. The exercise device for physical fitness training according to claim 1, characterized in that: A worm gear (16) is provided on the connecting rod (21) inside the sliding cylinder (18). The worm gear (16) is meshed with a worm (17). The worm (17) is welded to the vertical rod (9). The worm (17) and the vertical rod (9) are coaxially arranged. The worm (17) is located outside the frame (1).

7. A sports device for physical training according to claim 6, characterized in that: A vertical frame (23) is welded to the side wall of the connecting rod (21). An inclined frame (22) is rotatably connected to the vertical frame (23). The inclined frame (22) is arranged obliquely. The other end of the inclined frame (22) is rotatably connected to a connecting frame (24).

8. The exercise device for physical training according to claim 1, characterized in that: A connecting frame (24) is connected to the chuck (26), a baffle (27) is provided at the connection position between the chuck (26) and the connecting frame (24), and the diameter of the baffle (27) is larger than that of the chuck (26).

9. The exercise device for physical fitness training according to claim 8, characterized in that: A return spring (25) is sleeved on the chuck (26), the return spring (25) is located on the chuck (26) of the sliding cylinder (18), and one end of the return spring (25) is hooked on the baffle (27).

10. A method of using an exercise device for physical fitness training, applied to the exercise device according to any one of claims 1-9, characterized in that, It includes the following steps: S1: When the pedal (5) is installed on the lying bed (4) of the frame (1), it can be stepped on by the training personnel. The pedal (5) is connected to the rack (13) through the swing rod (14) and the support rod (15). When stepping on the pedal (5), the linkage rod (10) can be driven to rotate as a whole, and the transmission belt (7) on the linkage rod (10) can rotate. The transmission belt (7) is connected to the vertical rod (9), and after being driven, the vertical rod (9) will cause the worm (17) to drive the worm wheel (16). S2: The worm wheel (16) is connected to the connecting rod (21). After being driven, the connecting rod (21) will drive the vertical frame (23) to push the inclined frame (22). The inclined frame (22) can move towards the position of the connecting frame (24). During the movement, the inclined frame (22) can push the connecting frame (24). Finally, the connecting frame (24) will drive the chuck (26) to move out of the sliding cylinder (18). The chuck (26) can be inserted into the bayonet (20) of the sliding frame (19), and the sliding frame (19) can be limited. The barbell (3) on the sliding frame (19) will finally stop, and the barbell (3) can move away from the athlete.

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