Foldable high jump stand for track and field training

Abstract

The invention relates to the technical field of sports equipment, in particular to a foldable high jump stand for track and field training, which comprises a first supporting column, second supporting columns are rotatably connected to the inner side of the top end of the first supporting column, and fourth rotating shafts are rotatably connected to the top ends of the inner sides of multiple groups of second supporting columns; according to the foldable high jump stand for athletic training, buffering force corresponding to the connecting blocks and the transverse rod is generated under the acting force of the first springs and the second springs, when an athlete touches the transverse rod, the connecting blocks are connected with the transverse rod, and when the athlete touches the transverse rod, the fixing frames are arranged on the connecting blocks, so that the athlete can conveniently move. When the cross rod falls, the buffer device can relieve the impact force of the cross rod and the support, sharp collision sound and possible springback damage are avoided, meanwhile, the service life of the high jump stand can be prolonged, a plurality of sets of cameras are used for capturing a user through operation of the motor, and therefore the corresponding motion trail is recorded.

Description

Technical Field

[0001] The present invention relates to the technical field of sports equipment, and particularly relates to a foldable high jump stand for track and field training. Background Art

[0002] As one of the core devices for the track and field high jump event, the convenience and practicality of the high jump stand have attracted much attention. Existing high jump stands have some disadvantages. First, when an athlete touches the crossbar during the high jump process, without a buffer device, the crossbar will fall quickly and rigidly, which may cause the athlete to be hit by the crossbar during the landing process, resulting in various degrees of external injuries such as abrasions and bruises, bringing relatively serious safety hazards. At the same time, during the frequent collisions between the crossbar and the support, a large impact force will be generated, leading to structural damage, thereby shortening the service life of the high jump stand and increasing the maintenance and replacement costs of the equipment. Second, it is impossible to clearly see the changing trend of the jumping height and the stability of the technical movements of the athlete over a period of time. Relying on visual observation to roughly judge, it is impossible to accurately provide personalized technical guidance according to the characteristics of each athlete. To solve the above problems, we have proposed a foldable high jump stand for track and field training. Summary of the Invention

[0003] The main purpose of the present invention is to provide a foldable high jump stand for track and field training, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A foldable high jump stand for track and field training, including a first support column. The inner side of the top end of the first support column is rotatably connected to a second support column. The inner sides of the top ends of multiple groups of the second support columns are rotatably connected to fourth rotating shafts. The outer side walls of multiple groups of the fourth rotating shafts are fixedly connected with rotating blocks. The front and rear sides of the top ends of multiple groups of the rotating blocks are provided with multiple groups of fixing frames. The corresponding sides of multiple groups of the fixing frames are provided with second grooves. One ends of the inner sides of multiple groups of the second grooves are fixedly connected with first springs. The other ends of multiple groups of the first springs are provided with pressing beads. The pressing beads are fitted with the second grooves. Multiple groups of third grooves are opened at the top ends of multiple groups of the rotating blocks. The third grooves are located between multiple groups of the fixing frames. Multiple groups of second springs are arranged at the top ends of the third grooves. Multiple groups of fourth grooves are opened on the front and rear sides of multiple groups of the rotating blocks. Multiple groups of holes are opened on the front and rear sides of multiple groups of the rotating blocks and are slidably connected with sliding rods. The sliding rods are located inside the fourth grooves. The other ends of multiple groups of the sliding rods are provided with triangular clamping blocks. The triangular clamping blocks are fitted with the fourth grooves. One ends of the inner sides of multiple groups of the fourth grooves are fixedly connected with third springs. The other ends of multiple groups of the third springs are fixedly connected with one ends of the triangular clamping blocks. The third springs are located outside the sliding rods.

[0006] Preferably, a support frame is detachably connected to the top of each group of the rotating blocks. First grooves are formed in the front and rear side walls of each group of the support frames. The first grooves are fitted with the pressing beads. A fixing rod is arranged at the bottom end of the support frame. A guiding plate is arranged at the bottom end of the fixing rod. The top ends of the guiding plates are in contact with the bottom ends of the triangular clamping blocks, and the bottom ends of the guiding plates are in contact with the top ends of a plurality of second springs.

[0007] Preferably, a hole is formed in the side wall of the top end of the first support column and a first rotating shaft is rotatably connected thereto. The outer side wall of the first rotating shaft is fixedly connected to the outer side wall of the second support column. Second rotating shafts are rotatably connected to the inner sides of the second support columns. A first gear is arranged on the outer side wall of the second rotating shaft. First transmission strips are connected to the outer side walls of the two ends of the second rotating shaft and the outer side wall of the first rotating shaft in a transmission manner.

[0008] Preferably, third rotating shafts are rotatably connected to the inner sides of the second support columns. A second gear is arranged on the outer side wall of the third rotating shaft. The second gear meshes with the first gear. Second transmission strips are connected to the outer side walls of the two ends of the third rotating shaft and the outer side walls of the two ends of the fourth rotating shaft in a transmission manner.

[0009] Preferably, a rotating groove is formed in the front side of the first support column. The rotating groove is fitted with the second support column. Cross-shaped card slots are formed at both ends of each of the first rotating shafts. Cross-shaped grooves are formed in the side walls of the top ends of the two sides of each of the first support columns. Cross-shaped clamping blocks are detachably connected to the two side walls of each of the first support columns. The cross-shaped clamping blocks are respectively fitted with the cross-shaped grooves and the cross-shaped card slots.

[0010] Preferably, connection blocks are arranged at the top ends of each group of the support frames. A motor is fixedly connected to one end of each group of the connection blocks. A cross bar is fixedly connected to the other end of the motor. The other end of the cross bar is fixedly connected to one end of another group of the connection blocks.

[0011] Preferably, a fifth rotating shaft is arranged at the output end of the motor. A rotating hole is formed in the inner side of the cross bar. The fifth rotating shaft is fitted with the rotating hole. The other end of the fifth rotating shaft is rotatably connected to the inner side of the cross bar.

[0012] Preferably, a plurality of openings are formed in the outer side wall of the cross bar and a guiding ring is rotatably connected thereto. The inner side walls of the guiding rings are fixedly connected to the outer side wall of the fifth rotating shaft. Sliding grooves are formed in the side walls of the plurality of openings formed in the outer side wall of the cross bar. Annular sliding blocks are arranged at both ends of the guiding rings. The annular sliding blocks are fitted with the sliding grooves. A plurality of cameras are arranged on the outer side walls of the guiding rings.

[0013] Preferably, a threaded hole is formed in the bottom end of the first support column. A threaded column is threadedly connected to the inner side of the threaded hole. A chassis is arranged at the bottom end of the threaded column. An anti-slip foot pad is arranged at the bottom end of the chassis.

[0014] Preferably, first support legs are rotatably connected to both the left and right sides of the outer sidewall of the first support column, support feet are provided at the bottoms of multiple groups of the first support legs, second support legs are rotatably connected to both the front and rear sides of the sidewall of the first support column, and rollers are rotatably connected to the bottoms of multiple groups of the second support legs.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. For the foldable high jump stand for track and field training, as the support frame moves downward, multiple groups of pressing beads contract inward under the action of multiple groups of first springs, so that multiple groups of support frames move downward, so that multiple groups of first grooves fit with multiple groups of pressing beads, and under the action of multiple groups of first springs, multiple groups of pressing beads clamp multiple groups of support frames. At the same time, the downward movement of multiple groups of support frames makes the fixed rod and the guide plate move downward, so that the guide plate pushes multiple groups of triangular blocks. Under the action of multiple groups of third springs, multiple groups of sliding rods drive the triangular blocks to move into the fourth grooves, so that the bottom end of the guide plate contacts the top ends of multiple groups of second springs. At this time, under the action of multiple groups of third springs, multiple groups of triangular blocks reset, so that the bottom ends of the triangular blocks contact the top end of the guide plate, so that buffer forces are provided for the connecting block and the crossbar under the action of multiple groups of first springs and second springs. When an athlete touches the crossbar and the crossbar falls, the buffer device can slow down the impact force between the crossbar and the support, avoid sharp collision sounds and possible rebound injuries, and at the same time can also extend the service life of the high jump stand.

[0017] 2. For the foldable high jump stand for track and field training, the user rotates two groups of second support columns respectively to make the first rotating shaft rotate. And, the second rotating shaft and the first gear are driven to rotate through the first transmission strip. Since the first gear meshes with the second gear, the second gear and the third rotating shaft rotate, and the fourth rotating shaft and the rotating block are driven to rotate through the second transmission strip, so that the rotating block rotates while the second support column rotates, and the rotation directions are opposite. When the second support column rotates to the vertical state, multiple groups of cross-shaped blocks are used to clamp the cross-shaped card slots and cross-shaped grooves, so as to prevent the second support column from resetting. When the user uses it, the operation of the motor drives the fifth rotating shaft to rotate, so as to drive multiple groups of guide rings to rotate. And, since the annular slider fits with the chute, the stable rotation of the guide ring is ensured, so that multiple groups of cameras capture the user, so as to record the corresponding movement trajectory, and record data such as the height of each jump, the takeoff speed, and the posture of passing over the bar of the athlete. The change trend of the jump height and the stability of the technical movements of the athlete within a period of time can be clearly seen. The coach can analyze according to these data to formulate a more personalized training plan for the athlete. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Partial sectional view structure diagram of the first support column of the present invention;

[0020] Figure 3 Partial sectional view structure diagram of the first support column and the second support column of the present invention;

[0021] Figure 4 Partial sectional view structure diagram of the second support column of the present invention;

[0022] Figure 5 Partial sectional view structure diagram of the rotating block of the present invention;

[0023] Figure 6 Exploded view of the partial sectional structure of the rotating block of the present invention;

[0024] Figure 7 Exploded view of the partial structure of the first support column and the second support column of the present invention;

[0025] Figure 8 Exploded view of the partial structure of the cross bar of the present invention.

[0026] In the figure: 1. First support column; 11. Cross groove; 12. Threaded hole; 13. Threaded column; 14. First support leg; 15. Support foot; 16. Second support leg; 17. Roller; 18. Chassis; 19. Rotating groove; 2. Second support column; 21. First rotating shaft; 22. Cross slot; 23. Cross block; 24. Second rotating shaft; 25. First gear; 26. First transmission bar; 27. Third rotating shaft; 28. Second gear; 29. Second transmission bar; 3. Rotating block; 31. Fourth rotating shaft; 32. Support frame; 33. First groove; 34. Fixed rod; 35. Guide plate; 36. Fixed frame; 37. First spring; 38. Pressing bead; 39. Second groove; 4. Third groove; 41. Second spring; 42. Fourth groove; 43. Slide bar; 44. Third spring; 45. Triangular block; 46. Connecting block; 47. Cross bar; 48. Rotating hole; 49. Fifth rotating shaft; 5. Motor; 51. Slide groove; 52. Guide ring; 53. Camera; 54. Annular slider. Detailed implementation manners

[0027] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0028] As Figure 1-8As shown in the figure, a collapsible high jump stand for track and field training includes a first support column 1. The inner side of the top end of the first support column 1 is rotatably connected to a second support column 2. The inner top ends of multiple groups of second support columns 2 are all rotatably connected to a fourth rotating shaft 31. Fixedly connected to the outer side walls of multiple groups of fourth rotating shafts 31 are multiple groups of rotating blocks 3. On the front and rear sides of the top ends of multiple groups of rotating blocks 3, multiple groups of fixing frames 36 are provided. On the corresponding sides of multiple groups of fixing frames 36, second grooves 39 are opened. Fixedly connected to one end of the inner side of multiple groups of second grooves 39 are multiple groups of first springs 37. The other ends of multiple groups of first springs 37 are all provided with pressing beads 38. The pressing beads 38 fit with the second grooves 39. Multiple groups of third grooves 4 are opened at the top ends of multiple groups of rotating blocks 3. The third grooves 4 are located between multiple groups of fixing frames 36. Multiple groups of second springs 41 are provided at the top ends of the third grooves 4. Multiple groups of fourth grooves 42 are opened on the front and rear sides of multiple groups of rotating blocks 3. On the front and rear sides of multiple groups of rotating blocks 3, holes are opened and sliding rods 43 are connected. The sliding rods 43 are located inside the fourth grooves 42. The other ends of multiple groups of sliding rods 43 are all provided with triangular clamping blocks 45. The triangular clamping blocks 45 fit with the fourth grooves 42. Fixedly connected to one end of the inner side of multiple groups of fourth grooves 42 are multiple groups of third springs 44. The other ends of multiple groups of third springs 44 are all fixedly connected to one end of the triangular clamping blocks 45. The third springs 44 are located outside the sliding rods 43.

[0029] In this embodiment, a support frame 32 is detachably connected to the top ends of multiple groups of rotating blocks 3. First grooves 33 are opened on the front and rear side walls of multiple groups of support frames 32. The first grooves 33 fit with the pressing beads 38. A fixing rod 34 is provided at the bottom end of the support frame 32. A guiding plate 35 is provided at the bottom end of the fixing rod 34. The top ends of multiple groups of guiding plates 35 are all in contact with the bottom ends of the triangular clamping blocks 45. The bottom end of the guiding plate 35 is in contact with the top ends of multiple groups of second springs 41.

[0030] Specifically, the bottom end of the guiding plate 35 is in contact with the top ends of multiple groups of second springs 41. At this time, under the action of multiple groups of third springs 44, multiple groups of triangular clamping blocks 45 are reset, so that the bottom ends of the triangular clamping blocks 45 are in contact with the top ends of the guiding plates 35, thereby providing corresponding buffering forces for the connecting block 46 and the crossbar 47 under the action of multiple groups of first springs 37 and second springs 41.

[0031] In this embodiment, a hole is opened on the side wall of the top end of the first support column 1 and a first rotating shaft 21 is rotatably connected. The outer side wall of the first rotating shaft 21 is fixedly connected to the outer side wall of the second support column 2. Multiple groups of second rotating shafts 24 are rotatably connected inside multiple groups of second support columns 2. A first gear 25 is provided on the outer side wall of the second rotating shaft 24. A first transmission strip 26 is connected to the outer side walls of both ends of the second rotating shaft 24 and the outer side wall of the first rotating shaft 21.

[0032] Specifically, by respectively rotating two groups of second support columns 2, the first rotating shaft 21 rotates, and furthermore, the second rotating shaft 24 and the first gear 25 are driven to rotate through the first transmission strip 26.

[0033] In this embodiment, a third rotating shaft 27 is rotatably connected to the inner sides of multiple groups of second support columns 2. A second gear 28 is arranged on the outer side wall of the third rotating shaft 27. The second gear 28 meshes with the first gear 25. A second transmission strip 29 is connected to the outer side walls of both ends of the third rotating shaft 27 and the outer side walls of both ends of the fourth rotating shaft 31 for transmission.

[0034] Specifically, through the meshing of the first gear 25 and the second gear 28, the second gear 28 and the third rotating shaft 27 rotate. And the fourth rotating shaft 31 and the rotating block 3 are driven by the second transmission strip 29 to rotate. Thus, the rotating block 3 rotates while the second support column 2 rotates, and the rotation directions are opposite.

[0035] In this embodiment, a rotating groove 19 is formed in the front side of the first support column 1. The rotating groove 19 fits with the second support column 2. Cross-shaped card slots 22 are formed at both ends of multiple groups of first rotating shafts 21. Cross-shaped grooves 11 are formed in the side walls at both ends of the top of multiple groups of first support columns 1. Cross-shaped clamping blocks 23 are detachably connected to the side walls of multiple groups of first support columns 1. The cross-shaped clamping blocks 23 respectively fit with the cross-shaped grooves 11 and the cross-shaped card slots 22.

[0036] Specifically, when the second support column 2 rotates to the vertical state, the cross-shaped clamping blocks 23 are used to clamp the cross-shaped card slots 22 and the cross-shaped grooves 11, thereby preventing the second support column 2 from resetting when the user uses it.

[0037] In this embodiment, connection blocks 46 are arranged at the tops of multiple groups of support frames 32. One end of a group of connection blocks 46 is fixedly connected with a motor 5. The other end of the motor 5 is fixedly connected with a cross bar 47. The other end of the cross bar 47 is fixedly connected with one end of another group of connection blocks 46.

[0038] Specifically, the cross bar 47 is supported by multiple groups of connection blocks 46.

[0039] In this embodiment, a fifth rotating shaft 49 is arranged at the output end of the motor 5. A rotating hole 48 is formed in the inner side of the cross bar 47. The fifth rotating shaft 49 fits with the rotating hole 48. The other end of the fifth rotating shaft 49 is rotatably connected with the inner side of the cross bar 47.

[0040] Specifically, the operation of the motor 5 drives the fifth rotating shaft 49 to rotate, thereby driving multiple groups of guide rings 52 to rotate.

[0041] In this embodiment, multiple groups of openings are formed in the outer side wall of the cross bar 47 and guide rings 52 are rotatably connected. The inner side walls of multiple groups of guide rings 52 are fixedly connected with the outer side wall of the fifth rotating shaft 49. Slide grooves 51 are formed in the side walls of multiple groups of openings formed in the outer side wall of the cross bar 47. Ring-shaped sliding blocks 54 are arranged at both ends of the guide rings 52. The ring-shaped sliding blocks 54 fit with the slide grooves 51. Multiple groups of cameras 53 are arranged on the outer side walls of multiple groups of guide rings 52.

[0042] Specifically, the annular slider 54 fits with the chute 51, thereby ensuring the stable rotation of the guide ring 52, enabling multiple cameras 53 to capture the user, and recording the corresponding movement trajectory.

[0043] In this embodiment, a threaded hole 12 is formed at the bottom end of the first support column 1. A threaded column 13 is threadedly connected inside the threaded hole 12. A chassis 18 is provided at the bottom end of the threaded column 13, and an anti-slip foot pad is provided at the bottom end of the chassis 18.

[0044] Specifically, by rotating the threaded column 13, the first support column 1 is controlled to move up and down, so that the bottom end of the chassis 18 is in close contact with the ground, thereby controlling the height of the high jump stand. And the anti-slip foot pad at the bottom end of the chassis 18 enhances the friction with the ground and the stability of the high jump stand.

[0045] In this embodiment, the left and right sides of the outer side wall of the first support column 1 are both rotatably connected with first support legs 14. Support feet 15 are provided at the bottom ends of multiple groups of first support legs 14. The front and rear sides of the side wall of the first support column 1 are both rotatably connected with second support legs 16. Rollers 17 are rotatably connected to the bottom ends of multiple groups of second support legs 16.

[0046] Specifically, the multiple groups of first support columns 1 are moved to the corresponding positions through the rollers 17, and the bottom ends of the support feet 15 are brought into contact with the ground by rotating the first support legs 14, thereby laterally supporting the multiple groups of first support columns 1.

[0047] It should be noted that the present invention is a foldable high jump stand for track and field training. The user moves multiple groups of first support columns 1 to corresponding positions through rollers 17, and rotates the first support legs 14 to make the bottom ends of the support feet 15 contact the ground, so as to laterally support multiple groups of first support columns 1. Then, the user controls the up and down movement of the first support columns 1 by rotating the threaded columns 13, making the bottom end of the chassis 18 closely contact the ground, thereby controlling the height of the high jump stand. Moreover, the anti-slip pads at the bottom end of the chassis 18 enhance the friction with the ground and the stability of the high jump stand. After fixing two groups of first support columns 1, the connection blocks 46 at both ends of the crossbar 47 and multiple groups of support frames 32 are placed between multiple groups of fixing frames 36. As the support frames 32 move downward, multiple groups of pressure beads 38 contract inward under the action of multiple groups of first springs 37, so that multiple groups of support frames 32 move downward, making multiple groups of first grooves 33 fit with multiple groups of pressure beads 38, and multiple groups of pressure beads 38 clamp multiple groups of support frames 32 under the action of multiple groups of first springs 37. At the same time, the downward movement of multiple groups of support frames 32 makes the fixed rods 34 and the guide plates 35 move downward, so that the guide plates 35 push multiple groups of triangular blocks 45. Under the action of multiple groups of third springs 44, multiple groups of sliding rods 43 drive the triangular blocks 45 to move into the fourth grooves 42, making the bottom ends of the guide plates 35 contact the top ends of multiple groups of second springs 41. At this time, multiple groups of triangular blocks 45 reset under the action of multiple groups of third springs 44, making the bottom ends of the triangular blocks 45 contact the top ends of the guide plates 35, so as to provide corresponding buffer forces for the connection blocks 46 and the crossbar 47 under the action of multiple groups of first springs 37 and second springs 41. Then, the user rotates the two second support columns 2 respectively to make the first rotating shafts 21 rotate. And, the second rotating shafts 24 and the first gears 25 are driven to rotate through the first transmission bars 26. Since the first gears 25 mesh with the second gears 28, the second gears 28 and the third rotating shafts 27 rotate. And the fourth rotating shafts 31 and the rotating blocks 3 are driven to rotate through the second transmission bars 29, so that the rotating blocks 3 rotate while the second support columns 2 rotate, and the rotation directions are opposite. When the second support columns 2 rotate to the vertical state, multiple groups of cross-shaped blocks 23 are used to engage with the cross-shaped slots 22 and the cross-shaped grooves 11, preventing the second support columns 2 from resetting. When the user uses it, the operation of the motor 5 drives the fifth rotating shaft 49 to rotate, driving multiple groups of guide rings 52 to rotate. And, since the annular sliders 54 fit with the sliding grooves 51, the stable rotation of the guide rings 52 is ensured, so that multiple groups of cameras 53 capture the user, recording the corresponding movement trajectories.

[0048] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A foldable high jump stand for track and field training, comprising a first support column (1), characterized in that: The inner side of the top of the first support column (1) is rotatably connected to the second support column (2), the inner tops of the multiple sets of the second support columns (2) are all rotatably connected to the fourth rotating shaft (31), the outer side walls of the multiple sets of the fourth rotating shaft (31) are all fixedly connected to the rotating block (3), the tops of the multiple sets of the rotating blocks (3) are all provided with multiple sets of fixing frames (36) on both sides of the front and rear sides, the corresponding sides of the multiple sets of the fixing frames (36) are all provided with a second groove (39), the inner ends of the multiple sets of the second grooves (39) are fixedly connected to the first spring (37), the other ends of the multiple sets of the first springs (37) are all provided with a pressing bead (38), the pressing bead (38) is matched with the second groove (39), the tops of the multiple sets of the rotating blocks (3) are provided with multiple sets of third grooves (4), the third grooves (4 ) is located between multiple groups of fixed frames (36), multiple groups of second springs (41) are arranged at the top of the third groove (4), multiple groups of fourth grooves (42) are opened on both the front and rear sides of the rotating blocks (3), multiple groups of holes are opened on both the front and rear sides of the rotating blocks (3) and are slidably connected with a slide bar (43), the slide bar (43) is located inside the fourth groove (42), the other end of multiple groups of slide bars (43) is provided with a triangular clamping block (45), the triangular clamping block (45) is matched with the fourth groove (42), one end of the inner side of multiple groups of the fourth groove (42) is fixedly connected with a third spring (44), the other end of multiple groups of the third spring (44) is fixedly connected to one end of the triangular clamping block (45), and the third spring (44) is located outside the slide bar (43).

2. A foldable high jump stand for track and field training according to claim 1, characterized in that: The top ends of the plurality of rotating blocks (3) are detachably connected to support frames (32); the front and rear side walls of the plurality of supporting frames (32) are both provided with first grooves (33); the first grooves (33) are matched with the pressing beads (38); the bottom ends of the supporting frames (32) are provided with fixing rods (34); the bottom ends of the fixing rods (34) are provided with guide plates (35); the top ends of the plurality of guiding plates (35) are all in contact with the bottom ends of the triangular clamping blocks (45); the bottom ends of the guiding plates (35) are in contact with the top ends of the plurality of second springs (41).

3. A foldable high jump stand for track and field training according to claim 1, characterized in that: The top side wall of the first support column (1) is provided with a hole and is rotatably connected to a first rotating shaft (21); the outer side wall of the first rotating shaft (21) is fixedly connected to the outer side wall of the second support column (2); the inner sides of multiple groups of the second support columns (2) are all rotatably connected to second rotating shafts (24); the outer side wall of the second rotating shaft (24) is provided with a first gear (25); the outer side walls at both ends of the second rotating shaft (24) are transmission-connected to the outer side wall of the first rotating shaft (21) via first transmission bars (26).

4. A foldable high jump stand for track and field training according to claim 1, characterized in that: The inner sides of the plurality of groups of the second support columns (2) are all rotatably connected to a third rotating shaft (27); a second gear (28) is provided on the outer side wall of the third rotating shaft (27); the second gear (28) and the first gear (25) are meshed with each other; and second transmission bars (29) are transmission-connected to the outer side walls at both ends of the third rotating shaft (27) and the outer side walls at both ends of the fourth rotating shaft (31).

5. A foldable high jump stand for track and field training according to claim 3, characterized in that: A rotation groove (19) is provided on the front side of the first support column (1), and the rotation groove (19) is matched with the second support column (2). A plurality of groups of first rotating shafts (21) are provided with cross slots (22) at both ends. A plurality of groups of first support columns (1) are provided with cross grooves (11) on both side walls at the top. A plurality of groups of first support columns (1) are provided with cross blocks (23) on both side walls which are detachably connected. The cross blocks (23) are matched with the cross grooves (11) and the cross slots (22) respectively.

6. A foldable high jump stand for track and field training according to claim 2, characterized in that: A connection block (46) is disposed at the top of each of the plurality of groups of support frames (32); one end of each of the connection blocks (46) is fixedly connected to a motor (5); the other end of the motor (5) is fixedly connected to a cross bar (47); and the other end of the cross bar (47) is fixedly connected to one end of another group of connection blocks (46).

7. A foldable high jump stand for track and field training according to claim 6, characterized in that: The output end of the motor (5) is provided with a fifth rotating shaft (49), the inner side of the cross bar (47) is provided with a rotating hole (48), the fifth rotating shaft (49) is matched with the rotating hole (48), and the other end of the fifth rotating shaft (49) is rotatably connected to the inner side of the cross bar (47).

8. A foldable high jump stand for track and field training according to claim 7, characterized in that: The outer wall of the cross bar (47) is provided with multiple groups of openings and is rotatably connected with a guide ring (52); the inner walls of the multiple groups of guide rings (52) are fixedly connected with the outer wall of the fifth rotating shaft (49); the side walls of the multiple groups of openings provided on the outer wall of the cross bar (47) are provided with a slide groove (51); both ends of the guide ring (52) are provided with an annular slider (54); the annular slider (54) is matched with the slide groove (51); the outer walls of the multiple groups of guide rings (52) are provided with multiple groups of cameras (53).

9. The foldable high jump stand for track and field training according to claim 1, characterized in that: A threaded hole (12) is provided at the bottom end of the first support column (1), a threaded column (13) is threadedly connected to the inner side of the threaded hole (12), a bottom end of the threaded column (13) is provided with a bottom plate (18), and a non-slip foot pad is provided at the bottom end of the bottom plate (18).

10. The foldable high jump stand for track and field training according to claim 1, characterized in that: The first support column (1) has first support legs (14) rotatably connected to the left and right sides of the outer wall, and the bottom ends of multiple groups of the first support legs (14) are provided with support feet (15); the front and rear sides of the side walls of the first support column (1) are rotatably connected to second support legs (16), and the bottom ends of multiple groups of the second support legs (16) are rotatably connected to rollers (17).

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