Physical training apparatus for strengthening physical fitness

Abstract

The invention belongs to the technical field of physical training equipment, and provides a physical training apparatus for strengthening physical fitness, the physical training apparatus comprises two training boxes, the two training boxes are respectively and vertically connected with sliding clamping assemblies in a sliding manner, and a grabbing rod is transversely and fixedly connected between the two sliding clamping assemblies; a plurality of sets of balancing weights are vertically and slidably connected into the two sets of weight boxes respectively, balancing weight connecting assemblies are further arranged in the two weight boxes respectively, supplementing grabbing pieces are further arranged on the balancing weight connecting assemblies, and the supplementing grabbing pieces are used for being additionally connected with one set of balancing weights when the balancing weight connecting assemblies ascend to a certain height; the steel wire rope connecting assembly is wound between the training box and the weight box, the steel wire rope connecting assembly is fixedly connected with the weight balancing block connecting assembly, and the sliding clamping assembly is used for clamping or releasing the steel wire rope connecting assembly. A small part of load is automatically increased in the action process of a trainee, the trainee is assisted to quickly break through the strength limit value of the trainee, and the physical fitness strengthening effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of physical training equipment, and in particular relates to a sports training device for strengthening physical fitness. Background Art

[0002] Physical fitness is the basic athletic ability of the human body, which is manifested through strength, speed, endurance, coordination, flexibility, agility and other athletic qualities. It is an important component of an athlete's competitive ability. The level of physical fitness is closely related to the morphological and functional characteristics of the human body. The direct task of physical fitness training is to improve the athletic quality of athletes according to the needs of various competitions. Among them, bench press, squats, deadlifts and other exercises can well strengthen physical fitness and achieve the effect of physical training.

[0003] In order to gradually strengthen physical fitness, trainees need to increase the training weight in a reasonable and gradual manner to improve their physical fitness, but the process of increasing the weight is difficult and requires targeted guidance and planning by the coach to avoid damage to the body. Existing training equipment such as bench press, squat, and deadlift can achieve good training effects, but the weight is fixed during the movement. Therefore, existing training equipment is not conducive to trainees to break through their own weight limit and is not conducive to the progress of physical fitness training. Summary of the invention

[0004] The purpose of the present invention is to provide a sports training device for strengthening physical fitness to solve the above-mentioned problems, so as to automatically increase a small part of the load during the trainee's movements, assist the trainee to quickly break through his or her own strength limit, and improve the physical fitness strengthening effect.

[0005] To achieve the above object, the present invention provides the following solution: a sports training device for strengthening physical fitness, comprising:

[0006] Two sets of training boxes, each of which is vertically slidably connected to a sliding clamping assembly, and a grab bar is laterally fixedly connected between the two sliding clamping assemblies;

[0007] Two groups of counterweight boxes, wherein a plurality of groups of counterweight blocks are vertically slidably connected in the two counterweight boxes, and the plurality of counterweight blocks are stacked and placed. The two counterweight boxes are also respectively provided with counterweight block connection assemblies, and the counterweight block connection assemblies are used to connect the required number of counterweight blocks. The counterweight block connection assemblies are also provided with supplementary grabbing pieces, and the supplementary grabbing pieces are used to automatically connect an additional group of counterweight blocks when the counterweight block connection assembly rises to a certain height.

[0008] A wire rope connection assembly, wherein the wire rope connection assembly is wound between the training box and the counterweight box, the wire rope connection assembly is fixedly connected to the counterweight block connection assembly, and the sliding clamping assembly is used to clamp or release the wire rope connection assembly.

[0009] Preferably, a placement groove is opened in the counterweight box, and two groups of second guide columns are vertically fixedly connected in the placement groove. Several counterweight blocks are slidably sleeved on the two second guide columns, and several counterweight blocks are respectively vertically opened with through holes, and the counterweight block connecting assembly passes through several of the through holes.

[0010] Preferably, the counterweight block connection assembly includes a central column, both ends of which are fixedly connected to the wire rope connection assembly, the central column vertically penetrates a plurality of the through holes, a plurality of second through holes are evenly spaced on the central column, a third through hole is formed on the side wall of the counterweight block, and the distance between two adjacent second through holes is equal to the distance between two adjacent third through holes on the counterweight blocks;

[0011] It also includes a pin, which penetrates the third through hole on one of the counterweight blocks and the corresponding second through hole to connect the center column to the required number of counterweight blocks.

[0012] Preferably, the supplementary grabbing member includes a sleeve slidably mounted on the central column, the sleeve is adapted to the through hole, a first through hole is provided on the sleeve, the sleeve is slid along the central column to align the first through hole with the second through hole, and a grabbing actuator is provided between the bottom of the side wall of the sleeve and the counterweight block.

[0013] Preferably, the grabbing actuator includes two groups of grooves opened at the bottom of the side wall of the sleeve, the two grooves are symmetrically arranged about the axis of the sleeve, wedge-shaped blocks are horizontally slidably connected in the two grooves, a spring is abutted between the wedge-shaped block and the bottom of the groove, and two groups of wedge-shaped slots are opened in the counterweight block, the two wedge-shaped slots are arranged on the side wall of the through hole, and the two wedge-shaped slots are adapted to the two wedge-shaped blocks.

[0014] Preferably, a scale is vertically provided on the top of the side wall of the central column, and the scale is used to indicate the position of the third through-hole aligned with the first through-hole.

[0015] Preferably, the wire rope connection assembly includes a wire rope and a plurality of pulleys rotatably connected to the training box and the weight box, the two ends of the wire rope are respectively fixedly connected to the top and bottom ends of the center column, and the wire rope is wrapped around the plurality of pulleys.

[0016] Preferably, the sliding clamping assembly includes a first guide column vertically fixedly connected to the training box, a slider is slidably sleeved on the first guide column, both ends of the grab bar are respectively fixedly connected to the two sliders, and a wire rope clamp is provided on the side wall of the slider. The wire rope clamp is used to clamp the wire rope at a specific position in the training box, and when the slider moves upward, the center column moves upward synchronously.

[0017] Preferably, the wire rope connection assembly comprises two groups of clamping plates fixedly connected to the side walls of the slider, and clamping seats are respectively and vertically fixedly connected to the opposite side walls of the two clamping plates, and the two clamping seats are used to clamp the wire rope;

[0018] It also includes a locking bolt, the threaded end of which horizontally penetrates the two clamping plates, and a locking nut is fixedly connected to the outer side of the clamping plate close to the locking bolt, and the locking bolt is adapted to the locking nut.

[0019] Preferably, conductive columns are fixedly connected to the opposite side walls of the two clamping plates, and an indicator light and a power box for supplying power to the indicator light are fixedly connected to the side wall of one of the clamping plates. When the two clamping seats clamp the wire rope, the two conductive columns engage and the indicator light lights up.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] 1. The present invention provides a supplementary grabbing piece, which can automatically grab an additional set of counterweight blocks during the trainee's movement, thereby achieving the effect of increasing the movement load and avoiding the trainee from carrying a heavy weight at the beginning of the movement, thereby reducing the difficulty of breaking through the physical fitness limit.

[0022] 2. By setting the sliding clamping assembly, the sports training device of the present invention can flexibly adjust the initial height of the grab bar, and can perform training of various movements such as bench press, squat, deadlift, etc., with rich functions and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a schematic diagram of the sports training apparatus of the present invention;

[0025] Figure 2 for Figure 1 A partial enlarged view in FIG.

[0026] Figure 3 is another schematic diagram of the sports training apparatus of the present invention;

[0027] Figure 4 is a schematic diagram of a sliding clamping assembly of the present invention;

[0028] Figure 5 It is a connection schematic diagram of the steel wire rope connection assembly of the present invention;

[0029] Figure 6 It is a front cross-sectional view of the counterweight block connection assembly and the counterweight block of the present invention;

[0030] Figure 7 A side cross-sectional view of a counterweight block connection assembly and a counterweight block of the present invention;

[0031] Among them, 1. training box; 2. counterweight box; 3. base; 4. wire rope; 5. reinforcing rod; 6. grab bar; 7. first guide column; 8. second guide column; 9. center column; 10. sleeve; 11. pin; 12. counterweight block; 13. pulley; 14. slider; 15. clamping plate; 16. clamping seat; 17. conductive column; 18. locking bolt; 19. power box; 20. indicator light; 21. locking nut; 22. wedge-shaped slot; 23. first through hole; 24. second through hole; 25. wedge-shaped block; 26. spring; 27. handle; 28. third through hole; 29. ​​scale; 30. through hole; 31. through hole; 32. support table. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-Figure 7 The present invention provides a sports training device for strengthening physical fitness, comprising:

[0035] Two sets of training boxes 1, each of which is vertically slidably connected with a sliding clamping assembly, and a grab bar 6 is horizontally fixedly connected between the two sliding clamping assemblies;

[0036] Two groups of counterweight boxes 2, in which a plurality of groups of counterweight blocks 12 are vertically slidably connected, respectively, and the plurality of counterweight blocks 12 are stacked and placed, and counterweight block connection components are respectively provided in the two counterweight boxes 2, and the counterweight block connection components are used to connect the required number of counterweight blocks 12, and the counterweight block connection components are also provided with supplementary grabbing pieces, and the supplementary grabbing pieces are used to automatically connect an additional group of counterweight blocks 12 when the counterweight block connection components rise to a certain height;

[0037] The wire rope connection assembly is wound between the training box 1 and the counterweight box 2, the wire rope connection assembly is fixedly connected to the counterweight block connection assembly, and the sliding clamping assembly is used to clamp or release the wire rope connection assembly.

[0038] The main function of the grab bar 6 is to provide a comfortable grabbing structure for the trainee when performing movements such as bench press, squat, and deadlift; the main function of the sliding clamping assembly is that when clamping the wire rope connecting assembly, the counterweight 12 can be pulled up by the grab bar 6, and when the wire rope connecting assembly is released, the initial height of the grab bar 6 can be adjusted to meet the requirements of different movements such as bench press, squat, and deadlift; the main function of the counterweight connecting assembly is to connect the required number of counterweights 12; the main function of the supplementary grabbing piece is to automatically grab the counterweight 12 at the top as the counterweight connecting assembly rises during the movement, which can not only increase the movement load, but also avoid the trainee from carrying a large weight at the initial stage of the movement, thereby reducing the difficulty of breaking through the physical limit. On the whole, the present invention can automatically grab an additional set of counterweights during the trainee's movements by providing a supplementary grabbing piece, thereby achieving the effect of increasing the movement load and avoiding the trainee from carrying a heavy weight at the beginning of the movement, thereby reducing the difficulty of breaking through the physical fitness limit. At the same time, by providing a sliding clamping component, the sports training equipment of the present invention can be used for training in various movements such as bench press, squat, deadlift, etc., with rich functions and a wide range of applications.

[0039] A further optimized solution also includes two sets of bases 3, and the training box 1 and the weight box 2 located on the same side are fixedly connected to one base 3.

[0040] In a further optimized solution, a reinforcing rod 5 is fixedly connected between the tops of the two training boxes 1. The main function of the reinforcing rod 5 is to improve the stability between the two training boxes 1.

[0041] A further optimized solution is that a placement groove is opened in the counterweight box 2, and two groups of second guide columns 8 are vertically fixedly connected in the placement groove. Several counterweight blocks 12 are slidably sleeved on the two second guide columns 8, and through holes 31 are vertically opened on several counterweight blocks 12, and the counterweight block connecting components penetrate several through holes 31.

[0042] Further optimization scheme, such as Figure 1 and Figure 6As shown, through holes 30 are vertically provided on both sides of the counterweight block 12 , and the second guide column 8 slides through the through holes 30 and penetrates the counterweight block 12 .

[0043] By providing the second guide column 8, the stability of the training device can be improved during the movement of the counterweight block 12.

[0044] Further optimized solution, the counterweight block connection assembly includes a central column 9, both ends of the central column 9 are respectively fixedly connected to the wire rope connection assembly, the central column 9 vertically penetrates a plurality of through holes 31, the central column 9 is evenly spaced with a plurality of second through holes 24, the side wall of the counterweight block 12 is provided with a third through hole 28, and the distance between two adjacent second through holes 24 is equal to the distance between the third through holes 28 on two adjacent counterweight blocks 12;

[0045] The pin 11 is also included. The pin 11 penetrates the third through hole 28 and the corresponding second through hole 24 on a counterweight block 12 to enable the central column 9 to connect to the required number of counterweight blocks 12 .

[0046] In this embodiment, Figure 6 and Figure 7 As shown, the pin 11 passes through the third second through hole 24 and the third through hole 28 from the top downwards. At this time, the center column 9 is raised, and the center column 9 can drive the third group of counterweights 12 at the top to be raised together through the pin 11. By passing the pin 11 through the third through hole 28 and the second through hole 24 at different heights, the training load can be changed.

[0047] Further optimization scheme, such as Figure 5 As shown, the bottom of the side wall of the weight box 2 is fixedly connected with a support table 32. During the non-training period, the center column 9 is pressed on the support table 32 under the action of its own gravity.

[0048] A further optimized solution is that the supplementary grabbing member includes a sleeve 10 slidably mounted on the central column 9, the sleeve 10 is adapted to the through hole 31, a first through hole 23 is opened on the sleeve 10, the sleeve 10 is slid along the central column 9 to align the first through hole 23 with a second through hole 24, and a grabbing actuator is arranged between the bottom of the side wall of the sleeve 10 and the counterweight block 12.

[0049] A further optimized solution is that the grabbing actuator includes two groups of grooves opened at the bottom of the side wall of the sleeve 10, the two grooves are symmetrically arranged about the axis of the sleeve 10, and wedge-shaped blocks 25 are horizontally slidably connected in the two grooves respectively, and a spring 26 is abutted between the wedge-shaped block 25 and the bottom of the groove, and two groups of wedge-shaped grooves 22 are opened in the counterweight block 12, the two wedge-shaped grooves 22 are arranged on the side wall of the through hole 31, and the two wedge-shaped grooves 22 are adapted to the two wedge-shaped blocks 25.

[0050] like Figure 6 and Figure 7As shown, the elastic force of the spring 26 is designed and selected to ensure that the clamping force between the wedge-shaped clamping block 25 and the wedge-shaped clamping groove 22 can only lift one set of counterweight blocks 12.

[0051] In this embodiment, the pin 11 is inserted into the third group of counterweights 12 from the top to the bottom as an example. The trainee lifts the grip bar 6 upward to raise the center column 9. At this time, the center column 9 drives the sleeve 10 and the three groups of counterweights 12 at the top to move and rise through the pin 11. At the same time, limited by the elastic force of the spring 26, the wedge-shaped block 25 at the bottom of the sleeve 10 will first withdraw from the wedge-shaped slot 22 in the sixth group of counterweights 12 under the action of the wedge surface, and with the lifting of the center column 9, it will be inserted into and out of the wedge-shaped slot 22 in the fifth group of counterweights 12, and finally be connected to the wedge-shaped slot 22 of the fourth group of counterweights 12. At this time, since the three groups of counterweights 12 at the top are lifted together with the center column 9, the fourth group of counterweights 12 is at the top, and the wedge-shaped block 25 can lift it. At this time, the trainee's training action is in the middle stage, and a group of counterweights 12 is automatically added, that is, a small amount of load is added, which plays a role in improving the effect of strengthening physical training.

[0052] As a further optimization solution, a scale 29 is vertically provided on the top of the side wall of the central column 9 , and the scale 29 is used to indicate the position of the third through hole 28 aligned with the first through hole 23 .

[0053] According to a further optimized solution, a handle 27 is fixedly connected to the top of the sleeve 10 .

[0054] like Figure 6 and Figure 7 As shown, commonly, the weight indications are marked on the several weight blocks 12 in the weight box 2 from top to bottom. When the trainee needs to increase the training load, the sleeve 10 can be pressed downward by the handle 27 to move the wedge-shaped block 25 between the several wedge-shaped slots 22 until the top of the sleeve 10 moves to the weight indicated by the scale 29. At this time, the pin is inserted into the weight block 12 corresponding to the weight indicated by the scale 29, so that the pin can pass through the third through hole 28, the first through hole 23 and the second through hole 24, thereby realizing the change of the training load.

[0055] A further optimized solution is that the wire rope connection assembly includes a wire rope 4 and a plurality of pulleys 13 rotatably connected to the training box 1 and the weight box 2, the two ends of the wire rope 4 are respectively fixedly connected to the top and bottom ends of the center column 9, and the wire rope 4 is wrapped around the plurality of pulleys 13.

[0056] like Figure 5As shown, by setting 8 sets of pulleys 13, the head and tail of the wire rope 4 are connected to the two ends of the center column 9 and the wire rope 4 is looped between the training box 1 and the counterweight box 2. When the wire rope 4 located on the left side of the training box 1 is pulled upward, the center column 9 can move upward under the pull of the wire rope 4. Similarly, when the center column 9 moves downward, the wire rope 4 located on the left side of the training box 1 moves downward.

[0057] A further optimized solution is that the sliding clamping assembly includes a first guide column 7 vertically fixedly connected to the training box 1, a slider 14 is slidably sleeved on the first guide column 7, both ends of the grab bar 6 are respectively fixedly connected to the two sliders 14, and a wire rope clamp is provided on the side wall of the slider 14. The wire rope clamp is used to clamp the wire rope 4 at a specific position in the training box 1. When the slider 14 moves upward, the center column 9 moves upward synchronously.

[0058] Further optimized solution, the wire rope connection assembly includes two sets of clamping plates 15 fixedly connected to the side walls of the slider 14, and clamping seats 16 are respectively and vertically fixedly connected to the opposite side walls of the two clamping plates 15, and the two clamping seats 16 are used to clamp the wire rope 4;

[0059] It also includes a locking bolt 18 , the threaded end of which horizontally penetrates the two clamping plates 15 , and a locking nut 21 is fixedly connected to the outer side of the clamping plate 15 near the locking bolt 18 , and the locking bolt 18 is adapted to the locking nut 21 .

[0060] like Figure 1 , Figure 2 and Figure 4 As shown, for example, when a trainee performs squat training, the grip bar 6 needs to be raised to a height close to the shoulder. After that, the locking bolt 18 is turned, and the two clamping plates 15 are moved toward the middle under the action of the locking nut 21 and the locking bolt 18, so that the two clamping seats 16 clamp the steel wire rope 4 near the side of the weight box 2 in the training box 1, thereby achieving the connection between the slider 14 and the steel wire rope 4.

[0061] In a further optimized solution, a rubber pad (not shown in the figure) is fixedly connected to the arc surface of the clamping seat 16. The main function of the rubber pad is to increase the friction force after clamping and prevent the wire rope 4 from excessive wear.

[0062] A further optimized solution is that conductive columns 17 are fixedly connected to the opposite side walls of the two clamping plates 15, an indicator light 20 and a power box 19 for supplying power to the indicator light 20 are fixedly connected to the side wall of one clamping plate 15, and when the two clamping seats 16 clamp the wire rope 4, the two conductive columns 17 engage and the indicator light 20 lights up.

[0063] like Figure 2As shown, a battery box may be used for the power box 19. As the locking bolt 18 is tightened, the two clamping plates 15 approach each other and the two conductive pillars 17 approach each other. By setting the length of the conductive pillars 17, when the clamping force of the clamping seat 16 on the steel wire rope 4 reaches the required value, the conductive pillars 17 on the two clamping plates 15 fit together, the circuit of the indicator light 20 is connected, and the indicator light is on, and the user can confirm that the clamping seat 16 and the steel wire rope 4 are in a good connection state.

[0064] The working process of this embodiment is as follows:

[0065] The trainee first holds the handle 27 according to the training item and his / her physical condition, adjusts the height of the sleeve 10 so that the top of the sleeve 10 is at the scale 29 showing the target weight, and then inserts the pin 11 into the third through hole 28 on the counterweight 12 at the corresponding position to connect the counterweight 12 and the center column 9. After that, the trainee lifts the grab bar 6 to a suitable height according to the training item, and tightens the locking bolts 18 on both sides until the indicator light 20 lights up and the training can be started.

[0066] The trainee grabs the grab bar 6 and lifts it upward, so that the center column 9 drives an appropriate number of counterweights 12 and sleeves 10 to rise together. During the action, the wedge-shaped clamping block 25 is inserted into the wedge-shaped clamping groove 22 in the top counterweight 12 among the remaining counterweights 12 and lifts it together, automatically adding a small amount of load, which improves the effect of strengthening physical training and avoids training injuries.

[0067] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A sports training device for strengthening physical fitness, characterized in that: include: Two sets of training boxes (1), wherein a sliding clamping assembly is vertically slidably connected in each of the two training boxes (1), and a grab bar (6) is transversely fixedly connected between the two sliding clamping assemblies; Two groups of counterweight boxes (2), wherein a plurality of groups of counterweight blocks (12) are respectively vertically slidably connected in the two counterweight boxes (2), wherein the plurality of counterweight blocks (12) are stacked and arranged, and a counterweight block connection assembly is also respectively arranged in the two counterweight boxes (2), wherein the counterweight block connection assembly is used to connect a required number of the counterweight blocks (12), and a supplementary grabbing piece is also arranged on the counterweight block connection assembly, wherein the supplementary grabbing piece is used to automatically connect an additional group of the counterweight blocks (12) when the counterweight block connection assembly rises to a certain height; A wire rope connection assembly, wherein the wire rope connection assembly is wound between the training box (1) and the counterweight box (2), the wire rope connection assembly is fixedly connected to the counterweight block connection assembly, and the sliding clamping assembly is used to clamp or release the wire rope connection assembly.

2. A sports training device for strengthening physical fitness according to claim 1, characterized in that: The counterweight box (2) is provided with a placement groove, and two groups of second guide columns (8) are vertically fixedly connected in the placement groove. A plurality of counterweight blocks (12) are slidably sleeved on the two second guide columns (8), and a plurality of counterweight blocks (12) are respectively vertically provided with through holes (31), and the counterweight block connection assembly penetrates the plurality of through holes (31).

3. A sports training device for strengthening physical fitness according to claim 2, characterized in that: The counterweight block connection assembly comprises a central column (9), the two ends of the central column (9) are respectively fixedly connected to the wire rope connection assembly, the central column (9) vertically penetrates a plurality of the through holes (31), a plurality of second through holes (24) are evenly spaced on the central column (9), a third through hole (28) is formed on the side wall of the counterweight block (12), and the distance between two adjacent second through holes (24) is equal to the distance between two adjacent third through holes (28) on the counterweight block (12); It also includes a pin (11), which penetrates the third through hole (28) on one of the counterweight blocks (12) and the corresponding second through hole (24) to connect the central column (9) to a required number of the counterweight blocks (12).

4. A sports training device for strengthening physical fitness according to claim 3, characterized in that: The supplementary grasping member comprises a sleeve (10) slidably mounted on the central column (9), the sleeve (10) being adapted to the through hole (31), a first through hole (23) being provided on the sleeve (10), the sleeve (10) being slidably mounted along the central column (9) so that the first through hole (23) is aligned with the second through hole (24), and a grasping actuator is provided between the bottom of the side wall of the sleeve (10) and the counterweight block (12).

5. A sports training device for strengthening physical fitness according to claim 4, characterized in that: The grabbing actuator comprises two groups of grooves provided at the bottom of the side wall of the sleeve (10), the two grooves being symmetrically arranged about the axis of the sleeve (10), wedge-shaped clamping blocks (25) being horizontally slidably connected in the two grooves, a spring (26) being abutted between the wedge-shaped clamping blocks (25) and the bottom of the grooves, two groups of wedge-shaped clamping grooves (22) being provided in the counterweight block (12), the two wedge-shaped clamping grooves (22) being arranged on the side wall of the through hole (31), and the two wedge-shaped clamping grooves (22) being adapted to the two wedge-shaped clamping blocks (25).

6. A sports training device for strengthening physical fitness according to claim 4, characterized in that: A scale (29) is vertically arranged on the top of the side wall of the central column (9), and the scale (29) is used to indicate the position of the third through hole (28) aligned with the first through hole (23).

7. A sports training device for strengthening physical fitness according to claim 3, characterized in that: The steel wire rope connection assembly comprises a steel wire rope (4) and a plurality of pulleys (13) rotatably connected to the training box (1) and the weight box (2); the two ends of the steel wire rope (4) are respectively fixedly connected to the top and bottom ends of the central column (9); and the steel wire rope (4) is wound around the plurality of pulleys (13).

8. A sports training device for strengthening physical fitness according to claim 7, characterized in that: The sliding clamping assembly comprises a first guide column (7) vertically fixedly connected in the training box (1); a slider (14) is slidably sleeved on the first guide column (7); the two ends of the grab bar (6) are respectively fixedly connected to the two sliders (14); a wire rope clamp is provided on the side wall of the slider (14); the wire rope clamp is used to clamp the wire rope (4) at a specific position in the training box (1); when the slider (14) moves upward, the central column (9) moves upward synchronously.

9. A sports training device for strengthening physical fitness according to claim 8, characterized in that: The wire rope connection assembly comprises two groups of clamping plates (15) fixedly connected to the side walls of the slider (14), and clamping seats (16) are respectively and vertically fixedly connected to the opposite side walls of the two clamping plates (15), and the two clamping seats (16) are used to clamp the wire rope (4); It also includes a locking bolt (18), the threaded end of which horizontally penetrates the two clamping plates (15), and a locking nut (21) is fixedly connected to the outer side of the clamping plate (5) close to the locking bolt (18), and the locking bolt (18) is adapted to the locking nut (21).

10. A sports training device for strengthening physical fitness according to claim 9, characterized in that: Conductive columns (17) are fixedly connected to opposite side walls of the two clamping plates (15), and an indicator light (20) and a power supply box (19) for supplying power to the indicator light (20) are fixedly connected to the side wall of one clamping plate (15). When the two clamping seats (16) clamp the steel wire rope (4), the two conductive columns (17) are engaged and the indicator light (20) is lit.

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