Multifunctional sports track and field training device

Abstract

The application provides a multifunctional sports track and field training device, which comprises a bottom plate, a main body frame, a chest pad, a foot swing mechanism and a swing arm exercise assembly. The foot swing mechanism comprises a foot pedal, a leg swing rod and an arc-shaped sliding assembly. One end of the leg swing rod is rotatably connected to a rotating seat, and the other end is fixed with the foot pedal. The swing arm exercise assembly comprises a vertical plate, a hand rod and a hand grip. The whole device integrates swing arm training, leg swing training, swing range adjustment, posture constraint and synchronous linkage into one, can replace multiple single-function instruments, and can effectively realize mechanical linkage and synchronous training of upper limb swing and lower limb swing through linkage of the foot swing mechanism, the swing arm exercise assembly and the linkage assembly, which is helpful for athletes to quickly form standard running muscle memory.

Description

Technical Field

[0001] This invention relates to the field of track and field training equipment technology, and in particular to a multifunctional track and field training device. Background Technology

[0002] Track and field is a long-standing and widely popular sport, mainly including running, jumping, and throwing events. It is an important part of physical education, competitive training, and national fitness. Track and field training equipment is sports equipment used to assist athletes in specific training such as starting, hurdling, and high jump. Its structural rationality, functional diversity, and safety directly affect training effectiveness and sports safety. In the technical training of track and field sprints, middle-distance and long-distance running, arm swing rhythm, leg swing amplitude, and upper and lower limb coordination are the core elements that determine running efficiency and athletic performance. Traditional training often relies on verbal instructions from coaches and athletes' self-experience.

[0003] However, verbal instruction and athletes' self-experience make it difficult to form standardized and repeatable movements, resulting in low training efficiency and the development of incorrect muscle memory. Some related training equipment has limited functions, only allowing for arm swing exercises or leg swing exercises, making it difficult to specifically correct problems of upper and lower limb incoordination. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that, in order to overcome the limitations of existing technologies, such as head guidance and athlete self-experience, it is difficult to form standardized and repeatable movements, resulting in low training efficiency and easy development of incorrect muscle memory. Some related training equipment has limited functions, only allowing for arm swing exercises or leg swing exercises, making it difficult to specifically correct the problem of upper and lower limb incoordination. The present invention provides a multifunctional sports track and field training device.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a multifunctional track and field training device, including a base plate, a main frame fixed to the upper surface of the base plate, a chest pad fixed to the main frame, rotating seats symmetrically distributed on both sides of the main frame corresponding to the chest pad, and a foot swing mechanism respectively provided on each rotating seat; the foot swing mechanisms on both sides are connected by a transmission component, and each foot swing mechanism is respectively connected to a swing arm exercise component; the foot swing mechanism includes a foot pedal, a leg swing rod and an arc-shaped sliding component, one end of the leg swing rod is rotatably connected to the rotating seat, and the other end is fixed to the foot pedal; the swing arm exercise component includes a vertical plate, a hand rod and a hand grip, the vertical plate is fixed to the main frame, one end of the vertical plate is rotatably provided with an axis, the hand swing rod is fixed to one end of the axis, and the other end of the axis is connected to a swing rod transmission component, the swing rod transmission component and the arc-shaped sliding component are linked by a linkage component, and the hand grip is fixed to the hand swing rod.

[0006] In the above-mentioned scheme, the coordinated operation of the foot swing mechanism, arm swing training component, and linkage component effectively achieves synchronous training of upper and lower limb arm swing, effectively solving the problems of disconnection and poor coordination between upper and lower limb movements in traditional training. This helps athletes quickly develop muscle memory for standard running movements. Simultaneously, the chest pad provides effective restraint for the athlete's chest position during training with this device, preventing excessive forward leaning and downward pressure, and avoiding the development of poor posture muscle memory.

[0007] Furthermore, a diagonal rod is fixedly installed on the main frame, and an end support rod and a middle reinforcing rod are fixedly installed on the middle part and one end of the diagonal rod, respectively. The end support rod and the middle reinforcing rod are both fixedly installed on the main frame. A fixing seat is installed on the diagonal rod, and the chest pad is fixedly installed on the top of the fixing seat.

[0008] Furthermore, the arc-shaped sliding assembly includes a fixed plate, a sliding block, and a first connecting rod. The fixed plate is fixed to the main frame, and an arc-shaped sliding groove is formed in the middle of the fixed plate. The sliding block is slidably disposed within the arc-shaped sliding groove. A connecting rod is fixed to the inner side of the sliding block, and the other end of the connecting rod is connected and fixed to the foot pedal on the corresponding side. The outer side of the sliding block is rotatably connected to the first connecting rod, and the other end of the first connecting rod is connected to the transmission assembly. An arc-shaped transmission gear block is fixed to the lower side of the sliding block, and the lower end face of the arc-shaped transmission gear block has teeth. A first gear is rotatably connected to the fixed plate, and the first gear meshes with the teeth of the arc-shaped transmission gear block. The fixed plate, arc-shaped sliding groove, sliding block, and connecting rod form an arc-shaped guiding structure, causing the leg to swing along a fixed trajectory, making the movement closer to the real running posture, while providing stable support for the linkage transmission and improving the consistency of the movement.

[0009] Furthermore, the transmission assembly includes a transmission box fixed to the floor. Inside the transmission box is a photoelectric encoder, the output end of which is fixed with a first bevel gear. Two second bevel gears are meshed with the outer sides of the first bevel gear, which are symmetrically arranged. A rotating shaft is fixed to the center of the outer end face of each bevel gear, and the other end of the rotating shaft is connected to the corresponding first connecting rod. This symmetrical transmission system, consisting of the transmission box, photoelectric encoder, bevel gear set, and rotating shaft, enables synchronous driving of both legs, ensuring smooth power output and even force distribution, thus preventing movement deformation due to uneven force application.

[0010] Furthermore, the main frame is equipped with a display screen, which is electrically connected to the photoelectric encoder.

[0011] Furthermore, the first link is connected to the corresponding rotating shaft via a swing assembly. The swing assembly includes a first swing amplitude adjustment block and a second swing amplitude adjustment block. One side of the first swing amplitude adjustment block is rotatably connected to the first link, and the other side is rotatably connected to a second link. The other end of the second link is rotatably connected to a third link. The end of the third link away from the connection with the second link is rotatably connected to the second swing amplitude adjustment block, and this end is coaxially connected to the corresponding rotating shaft via a coupling. The swing assembly, composed of multiple links and swing amplitude adjustment blocks, smoothly converts motor power into reciprocating leg swing, achieving continuous, smooth, and standardized leg swing movements. It can forcibly correct incorrect gait and improve training standardization.

[0012] Furthermore, the first and second amplitude adjustment blocks are connected via an amplitude adjustment assembly. This assembly includes an adjustment rod with several height grooves evenly spaced on it. The lower end of the adjustment rod is fixed to the second amplitude adjustment block. A lead screw is threaded onto the first amplitude adjustment block, and a knob is fixed to the outer end of the lead screw. The height grooves have threads matching the lead screw, and the lead screw is movably connected to the height grooves. By utilizing the adjustment rod, height grooves, lead screw, and knob, multi-level precise amplitude adjustment is achieved, adapting to different heights, training intensities, and project requirements, thus expanding the device's applicability and improving its flexibility.

[0013] Furthermore, the linkage component includes a sliding shell fixed to the main frame. Slots are formed at both ends of the sliding shell, and a rack is slidably connected within each slot. One end of the rack on each side meshes with the first gear of the arc-shaped sliding component on that side, while the other end engages with the swing arm transmission component. By forming a composite linkage mechanism with the arc-shaped transmission gear block, a strong synchronous linkage between leg swing and upper limb arm swing is achieved, completely solving the problem of rhythmic disconnect between the upper and lower limbs and resulting in higher training fidelity.

[0014] Furthermore, the swing arm transmission assembly includes a toothed belt, a second gear, and a third gear. The second and third gears are rotatably mounted on the upright plate. The second gear meshes with a rack on the corresponding side, and the third gear meshes with the second gear. A second synchronous pulley is coaxially fixed to the outer end face of the third gear, and a first synchronous pulley is coaxially fixed to the outer end of the shaft. The first and second synchronous pulleys are connected by a toothed belt drive. Through the synchronous pulleys and toothed belt drive, the linkage power is smoothly transmitted to the swing arm assembly, ensuring that the swing arm and leg swing frequencies are strictly matched, and that the movement transmission is lag-free and deviation-free, quickly forming correct running muscle memory.

[0015] Furthermore, the rack includes two rack bodies with toothed shapes and a sliding rod connecting the two rack bodies. One rack body meshes with the first gear, and the other rack body meshes with the second gear. A limiting block is provided in the groove corresponding to the middle position of the sliding rod. A sliding hole adapted to the shape of the sliding rod is provided on the limiting block, and the sliding rod is limited and slidably disposed in the sliding hole.

[0016] The beneficial effects of this invention are as follows: This invention provides a multifunctional athletics training device that, through the integrated coordination of an arm swing exercise component, a leg swing structure, and a linkage component, achieves synchronized mechanical linkage training between the upper and lower limb arm swings, effectively solving the problems of disconnected upper and lower limb movements and poor coordination in traditional training, and quickly forming standard running muscle memory; the integrated electric drive structure, consisting of a photoelectric encoder, bevel gear transmission, and swing component, can forcibly standardize the movement trajectory even when the athlete is fatigued, overcoming the shortcomings of traditional training that relies on voluntary force and is prone to movement deformation, resulting in a higher degree of training standardization; an amplitude adjustment component is provided, which allows for adjustment via knobs and... The lever, adjustment lever, and height groove work together to precisely adjust the leg swing amplitude, adapting to the personalized needs of different heights, training levels, and events, thus broadening its applicability. A multi-stage composite transmission chain, consisting of an arc-shaped sliding groove, sliding block, arc-shaped transmission gear block, gear rack, synchronous pulley, and toothed belt, ensures smooth motion transmission and synchronized response, achieving a high degree of uniformity between arm and leg swing rhythms, significantly improving training accuracy and stability. The entire device integrates arm swing training, leg swing training, amplitude adjustment, posture constraint, and synchronous linkage, replacing multiple single-function equipment. It occupies little space, boasts high functional integration, and is suitable for physical education and professional track and field training. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention.

[0019] Figure 2 This is a partial perspective view of an embodiment of the present invention.

[0020] Figure 3 This is a diagram of the arm swinging exercise component according to an embodiment of the present invention.

[0021] Figure 4 This is a diagram of the linkage components in an embodiment of the present invention.

[0022] Figure 5 This is a diagram of the arc-shaped sliding component according to an embodiment of the present invention.

[0023] Figure 6 This is a diagram of the swing component according to an embodiment of the present invention.

[0024] Figure 7This is a diagram of the swing amplitude adjustment component according to an embodiment of the present invention.

[0025] Figure 8 This is a diagram of the transmission component according to an embodiment of the present invention.

[0026] In the diagram: 1. Base plate; 2. Main frame; 3. Rotating seat; 4. Leg swing arm; 5. Foot pedal; 6. Anti-slip protrusion; 7. Angled rod; 8. Fixed seat; 9. Chest pad; 10. End support rod; 11. Middle reinforcing rod; 12. Fixing block; 13. Display screen; 14. Outer shell; 15. Shaft; 16. Hand swing arm; 17. Hand grip; 18. First synchronous pulley; 19. Toothed belt; 20. Second synchronous pulley; 21. Third gear; 22. Second gear; 23. First gear; 24. Rack body; 25. Sliding element. 26. Shell; 27. Sliding groove; 28. Sliding rod; 29. ​​Connecting rod; 30. Arc-shaped sliding groove; 31. Sliding block; 32. Arc-shaped transmission gear block; 33. First connecting rod; 34. First swing amplitude adjusting block; 35. Second connecting rod; 36. Third connecting rod; 37. Second swing amplitude adjusting block; 38. Coupling; 39. Rotating shaft; 40. Adjusting rod; 41. Height groove; 42. Lead screw; 43. Knob; 44. Transmission box; 45. Photoelectric encoder; 46. First bevel gear; 47. Second bevel gear; 48. Vertical plate; 49. Fixed plate. Detailed Implementation

[0027] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and the orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be limiting, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0028] like Figures 1 to 8 The multifunctional track and field training device shown is the preferred embodiment of the present invention. This multifunctional track and field training device includes a base plate 1, a main frame 2 fixedly mounted on the upper surface of the base plate 1, and two rotating seats 3 fixedly mounted on the main frame 2. The two rotating seats 3 are symmetrically distributed. Each rotating seat 3 on each side is provided with a foot swing mechanism; the foot swing mechanisms on both sides are connected by a transmission assembly, and each foot swing mechanism is correspondingly connected to a swing arm exercise assembly.

[0029] The foot swing mechanism includes a foot pedal 5, a leg swing arm 4, and an arc-shaped sliding assembly. The leg swing arms 4 are rotatably mounted inside the rotating base 3, and a foot pedal 5 is fixedly mounted to one end of each of the two leg swing arms 4. The foot pedal 5 has several anti-slip protrusions 6 inside. A linkage assembly is externally engaged with the arc-shaped sliding assembly, and a transmission assembly is fixedly mounted to the other end of the base plate 1. Both ends of the transmission assembly are fixedly connected to swing assemblies, and an amplitude adjustment assembly is mounted on the swing assembly.

[0030] The arm swing exercise assembly includes a vertical plate 47, which is fixedly connected to the main frame 2. A shell 14 is fixedly installed on the outside of the vertical plate 47. A shaft 15 is rotatably installed on one end of the vertical plate 47. A hand swing rod 16 is fixedly installed on one end of the shaft 15. A hand grip 17 is fixedly installed on one end of the hand swing rod 16.

[0031] The arc-shaped sliding assembly includes a fixed plate 48, which is fixedly mounted on the main frame 2. An arc-shaped sliding groove 29 is formed in the middle of the fixed plate 48. A sliding block 30 is slidably mounted inside the arc-shaped sliding groove 29. A connecting rod 28 is fixedly mounted on the inner side of the sliding block 30, and one end of the connecting rod 28 is fixedly mounted on the outside of the corresponding foot pedal 5. The arc-shaped sliding assembly consists of the fixed plate 48, the arc-shaped sliding groove 29, the sliding block 30, and the connecting rod 28. The sliding block 30 performs an arc-shaped reciprocating motion along the arc-shaped sliding groove 29. The motion of the sliding block 30 is transmitted to the foot pedal 5 through the connecting rod 28, causing the foot pedal 5 to swing along a fixed trajectory.

[0032] The transmission assembly includes a transmission housing 43, which is fixedly mounted on a base plate 1. An optical encoder 44 is fixedly mounted inside the transmission housing 43. A first bevel gear 45 is fixedly connected to the output end of the optical encoder 44. Two second bevel gears 46 are symmetrically meshed with the outer sides of the first bevel gear 45. Rotating shafts 38 are fixedly mounted on the outer sides of the two second bevel gears 46 and are rotatably connected to the transmission housing 43. One end of each of the two rotating shafts 38 extends to the outside of the transmission housing 43 and is fixedly connected to a coupling 37. The transmission assembly consists of the transmission housing 43, the optical encoder 44, the first bevel gear 45, the second bevel gears 46, the rotating shafts 38, and the couplings 37. The first bevel gear 45 meshes between the two second bevel gears 46. When one side of the first bevel gear 45 rotates, it meshes with the other side of the first bevel gear 45, causing it to rotate coaxially and in the opposite direction.

[0033] The swing assembly includes a first swing amplitude adjusting block 33 and a second swing amplitude adjusting block 36. A second connecting rod 34 is rotatably mounted on one side of the first swing amplitude adjusting block 33, and a first connecting rod 32 is rotatably mounted on the other side of the first swing amplitude adjusting block 33. One end of the second swing amplitude adjusting block 36 is fixedly connected to a coupling 37, and a third connecting rod 35 is rotatably mounted on the second swing amplitude adjusting block 36. One end of the second connecting rod 34 is rotatably connected to one end of the third connecting rod 35, and one end of the first connecting rod 32 is rotatably connected to a sliding block 30. The swing assembly consists of the first swing amplitude adjusting block 33, the second swing amplitude adjusting block 36, the first connecting rod 32, the second connecting rod 34, and the third connecting rod 35. The coupling 37 drives the second swing amplitude adjusting block 36 to rotate, and through multi-stage linkage transmission, drives the first connecting rod 32 to push and pull the sliding block 30, converting the rotational power into the reciprocating swinging power of the legs, realizing the alternating forward and backward movement of the left and right feet.

[0034] The amplitude adjustment assembly includes an adjustment rod 39. One end of the adjustment rod 39 is fixedly connected to the second amplitude adjustment block 36, and the other end is slidably connected to the first amplitude adjustment block 33. Multiple height grooves 40 are equidistantly spaced on the adjustment rod 39. The first amplitude adjustment block 33 is threadedly connected to a lead screw 41. One end of the lead screw 41 is fixedly connected to a knob 42. The height grooves 40 have threads that match the lead screw 41, and the lead screw 41 is movably connected to the corresponding height groove 40. The amplitude adjustment assembly consists of the adjustment rod 39, height grooves 40, lead screw 41, and knob 42. Rotating the knob 42 causes the lead screw 41 to rotate, making the lead screw 41 threadedly connected to different height grooves 40, thereby adjusting the position of the first amplitude adjustment block 33 on the adjustment rod 39. This changes the distance between the first amplitude adjustment block 33 and the second amplitude adjustment block 36, allowing for graded adjustment of the leg swing amplitude to suit different training needs.

[0035] The linkage assembly includes a sliding shell 25, which is fixedly installed on the outside of the main frame 2. Both ends of the sliding shell 25 have grooves 26, and a rack is slidably connected inside the grooves 26. The rack includes two toothed rack bodies 24 and a sliding rod 27 connecting the two rack bodies 24. The sliding rod 27 is slidably connected inside the sliding shell 25. A limiting block is located in the groove corresponding to the middle section of the sliding rod 27. The limiting block has a sliding hole adapted to the shape of the sliding rod 27, and the sliding rod is slidably positioned within the sliding hole, providing limiting guidance for the sliding rod to drive the rack bodies 24 at both ends to move synchronously. One rack body 24 meshes with the first gear 23, and the other rack body 24 meshes with the second gear 22. The first gear 23 is rotatably mounted on the fixed plate 48. An arc-shaped transmission gear block 31 is meshed with the outer side of the first gear 23. The arc-shaped transmission gear block 31 is fixedly mounted on the sliding block 30. The second gear 22 is meshed with the outer side of the third gear 21. Both the third gear 21 and the second gear 22 are rotatably mounted on the upright plate 47. The linkage assembly consists of a sliding shell 25, a sliding groove 26, a rack, a sliding rod 27, the first gear 23, the second gear 22, the third gear 21, and the arc-shaped transmission gear block 31. The sliding block 30 drives the arc-shaped transmission gear block 31 to drive the first gear 23, causing the rack to slide along the sliding groove 26. Power is then reversed and transmitted via the second gear 22 and the third gear 21, establishing a linkage between the leg and arm.

[0036] The third gear 21 is coaxially fixedly connected to the second synchronous pulley 20. The second synchronous pulley 20 is internally connected to a toothed belt 19. One end of the toothed belt 19 is connected to the first synchronous pulley 18. The first synchronous pulley 18 is fixedly connected to the corresponding shaft 15. The third gear 21 drives the second synchronous pulley 20 to rotate. The second synchronous pulley 20 drives the first synchronous pulley 18 to rotate through the toothed belt 19. The first synchronous pulley 18 drives the shaft 15 to rotate, so that the hand swing arm 16 and the leg movement are strictly opposite, realizing the standard linkage posture of the same side leg forward and hand backward, and leg backward and hand forward.

[0037] A diagonal bar 7 is fixedly installed on the main frame 2. An end support bar 10 and a middle reinforcing bar 11 are fixedly installed at the middle and one end of the diagonal bar 7, respectively. Both the end support bar 10 and the middle reinforcing bar 11 are fixedly installed on the main frame 2. A fixing seat 8 is installed on the diagonal bar 7, and a chest pad 9 is fixedly installed on the top of the fixing seat 8. The diagonal bar 7, fixing seat 8, chest pad 9, end support bar 10, and middle reinforcing bar 11 are installed on the main frame 2. The chest pad 9 supports and limits the user's torso. The diagonal bar 7, end support bar 10, and middle reinforcing bar 11 improve the overall structural strength, prevent the torso from swaying or leaning forward excessively during training, and ensure postural stability.

[0038] A fixing block 12 is fixedly installed at the end of the inclined rod 7. A display screen 13 is fixedly installed on the front of the fixing block 12. The display screen 13 is electrically connected to the photoelectric encoder 44. The photoelectric encoder 44 is coaxially set with the first bevel gear 45. It records the number of rotations, oscillation frequency and motion duration of the first bevel gear 45 in real time and transmits the data synchronously to the display screen 13 for real-time display.

[0039] In this embodiment, the device needs to be placed in a suitable training area. The base plate 1 provides stable support for the whole. Adjust the swing amplitude of running according to the training mode. Rotate the knob 42, which drives the lead screw 41 to rotate, so that the lead screw 41 moves axially along the first swing amplitude adjustment block 33, and then engages with the height grooves 40 at different positions on the adjustment rod 39, thereby changing the relative distance between the first swing amplitude adjustment block 33 and the second swing amplitude adjustment block 36, so as to achieve precise adjustment of the leg swing amplitude in stages.

[0040] After adjustment, the user stands facing the chest pad 9, gently pressing the chest against the surface of the chest pad 9, keeping the torso upright, core engaged, and shoulders relaxed; both feet are placed on the left and right foot pedals 5 respectively, with the anti-slip protrusions 6 inside the foot pedals 5 making full contact with the soles of the feet to increase friction resistance and prevent the feet from slipping during exercise; both hands naturally hold the left and right hand handles 17, with elbows slightly bent and upper limbs in a naturally relaxed ready position; the user uses the strength of their lower limbs to alternately step on the foot pedals 5, driving the leg swing arm 4 to swing around the rotating seat 3, thereby driving the entire device to operate.

[0041] When the foot pedal 5 moves, the connecting rod 28 drives the sliding block 30 to reciprocate along the arc-shaped sliding groove 29 of the fixed plate 48. The sliding block 30 drives the swing assembly composed of the first connecting rod 32, the first swing amplitude adjustment block 33, the second connecting rod 34, the third connecting rod 35, and the second swing amplitude adjustment block 36 to move. The second swing amplitude adjustment block 36 drives the coupling 37 and the rotating shaft 38 to rotate. The rotating shaft 38 rotates in the transmission box 43, driving the second bevel gear 46 to rotate synchronously. The second bevel gear 46 meshes with the first bevel gear 45 to realize power reversal and coaxial transmission, ensuring that the power input on the left and right sides is consistent and the movement trajectory is opposite.

[0042] The photoelectric encoder 44 is coaxially set with the first bevel gear 45, and records the number of rotations, oscillation frequency and exercise duration of the first bevel gear 45 in real time. The data is then synchronously transmitted to the display screen 13 for real-time display, so that users can intuitively grasp the training volume and exercise rhythm.

[0043] When the left foot pedal 5 swings forward, the right foot pedal 5 swings backward, and when the right foot pedal 5 swings forward, the left foot pedal 5 swings backward. The feet maintain an alternating forward and backward motion, replicating the gait of a true track and field runner. Simultaneously, as the sliding block 30 moves along the arc-shaped sliding groove 29, the arc-shaped transmission gear block 31 moves synchronously in an arc shape with the sliding block 30. The arc-shaped transmission gear block 31 meshes with and drives the first gear 23 to rotate. The first gear 23 drives the rack to slide linearly back and forth along the sliding groove 26 inside the sliding shell 25. The racks on both sides are connected by the sliding rod 27. The racks are connected to ensure that the left and right racks move synchronously and at the same speed. The racks mesh to drive the second gear 22 to rotate, and the second gear 22 meshes to drive the third gear 21 to rotate, completing the reversal of power, speed increase and torque matching. The third gear 21 drives the second synchronous pulley 20, which is set on the same axis, to rotate. The second synchronous pulley 20 smoothly transmits power to the first synchronous pulley 18 through the toothed belt 19. The first synchronous pulley 18 drives the shaft 15 to rotate, and the shaft 15 drives the hand swing arm 16 and the hand grip 17 to swing around the upright plate 47 to complete the standard swing arm movement.

[0044] This embodiment achieves complete symmetry and strict rhythm by using multi-level phase matching and reversal design. When the leg on the same side swings forward, the arm swing bar 16 on the same side swings backward, and when the leg on the same side swings backward, the arm swing bar 16 on the same side swings forward. The movements of the left and right arms and legs are completely symmetrical and the rhythm is strictly unified. This completely realizes the standard coordinated posture of leg forward and hand backward and leg backward and hand forward in track and field running. Throughout the training process, the user's chest is always in contact with the chest pad 9. The chest pad 9 forms a stable support system through the fixed seat 8, the inclined bar 7, the end support bar 10 and the middle reinforcing bar 11, which limits the excessive forward lean of the torso, ensures the standard and uniform training posture, and avoids movement deformation or safety hazards caused by loss of posture control. The power is transmitted through the first bevel gear 45, the second bevel gear 46, the rotating shaft 38, the coupling 37, the swing assembly, the arc sliding assembly, the linkage assembly, and the arm swinging exercise assembly to form a complete closed-loop transmission chain. The alternating swing of the legs and the opposite swing of the arms continue to cycle, forcing the user to train according to the standard trajectory, rhythm, and amplitude, quickly correcting problems such as incoordination of the upper and lower limbs, disordered arm swing, and gait deformation, and strengthening correct muscle memory.

[0045] After training, the first bevel gear 45, the second bevel gear 46, and the rotating shaft 38 stop rotating. The swing assembly, the arc sliding assembly, the linkage assembly, and the swing arm exercise assembly stop moving in sequence. The user can release the hand grip 17 and take both feet off the foot pedal 5 to complete the entire training process. Multiple sets of gear transmissions are lubricated with lubricating oil to maintain smooth transmission. Regular maintenance is also performed to ensure long-term stable operation.

[0046] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multifunctional athletics training device, characterized in that: Includes a base plate (1), a main frame (2) fixed on the upper surface of the base plate (1), a chest pad (9) fixed on the main frame (2), rotating seats (3) symmetrically distributed on both sides of the main frame (2) corresponding to the chest pad (9), and a foot swing mechanism is provided on each rotating seat (3); the foot swing mechanisms on both sides are connected by a transmission component, and each foot swing mechanism is connected to a swing arm exercise component. The foot swing mechanism includes a foot pedal (5), a leg swing arm (4) and an arc-shaped sliding assembly. One end of the leg swing arm (4) is rotatably connected to the rotating seat (3), and the other end is fixed with the foot pedal (5). The arm swing exercise assembly includes a stand plate (47), a hand rod, and a hand grip (17). The stand plate (47) is fixed on the main frame (2). One end of the stand plate (47) is rotatably provided with a shaft (15). The hand swing rod (16) is fixed at one end of the shaft (15). The other end of the shaft (15) is connected to a swing rod transmission assembly. The swing rod transmission assembly and the arc-shaped sliding assembly are linked through a linkage assembly. The hand grip (17) is fixed on the hand swing rod (16).

2. The multifunctional track and field training device as described in claim 1, characterized in that: An inclined rod (7) is fixedly installed on the main frame (2). An end support rod (10) and a middle reinforcing rod (11) are fixedly installed at the middle part and one end of the inclined rod (7), respectively. The end support rod (10) and the middle reinforcing rod (11) are both fixedly installed on the main frame (2). A fixing seat (8) is installed on the inclined rod (7). The chest pad (9) is fixedly installed on the top of the fixing seat (8).

3. The multifunctional track and field training device as described in claim 1, characterized in that: The arc-shaped sliding assembly includes a fixed plate (48), a sliding block (30), and a first connecting rod (32). The fixed plate (48) is fixed on the main frame (2). An arc-shaped sliding groove (29) is provided in the middle of the fixed plate (48). The sliding block (30) is slidably disposed in the arc-shaped sliding groove (29). A connecting rod (28) is fixed on the inner side of the sliding block (30). The other end of the connecting rod (28) is connected and fixed to the foot pedal (5) on the corresponding side. The outer side of the sliding block (30) is rotatably connected to the first connecting rod (32). The other end of the first connecting rod (32) is connected to the transmission assembly. The sliding block (30) has an arc-shaped transmission tooth block (31) fixed on its lower side. The lower end face of the arc-shaped transmission tooth block (31) has a tooth shape. The fixed plate (48) is rotatably connected to a first gear (23). The first gear (23) meshes with the tooth shape of the arc-shaped transmission tooth block (31).

4. The multifunctional track and field training device as described in claim 3, characterized in that: The transmission assembly includes a transmission box (43), which is fixed to the floor. A photoelectric encoder (44) is installed inside the transmission box (43). A first bevel gear (45) is fixed to the output end of the photoelectric encoder (44). Two second bevel gears (46) are meshed with the outer side of the first bevel gear (45). The two bevel gears are symmetrically arranged. A rotating shaft (38) is fixed to the center of the outer end face of the two bevel gears. The other end of the rotating shaft (38) is connected to the corresponding first connecting rod (32) for transmission.

5. A multifunctional track and field training device as described in claim 4, characterized in that: The main frame (2) is equipped with a display screen (13), which is electrically connected to the photoelectric encoder (44).

6. The multifunctional track and field training device as described in claim 4, characterized in that: The first link (32) is connected to the corresponding side rotating shaft (38) via a swing assembly. The swing assembly includes a first swing amplitude adjustment block (33) and a second swing amplitude adjustment block (36). One side of the first swing amplitude adjustment block (33) is rotatably connected to the first link (32), and the other side is rotatably connected to the second link (34). The other end of the second link (34) is rotatably connected to the third link (35). The end of the third link (35) away from the connection with the second link (34) is rotatably connected to the second swing amplitude adjustment block (36), and this end is coaxially connected to the corresponding side rotating shaft (38) via a coupling (37).

7. The multifunctional track and field training device as described in claim 1, characterized in that: The first amplitude adjustment block (33) and the second amplitude adjustment block (36) are connected by an amplitude adjustment assembly. The amplitude adjustment assembly includes an adjustment rod (39). The adjustment rod (39) has several height grooves (40) evenly spaced on it. The lower end of the adjustment rod (39) is fixed to the second amplitude adjustment block (36). The first amplitude adjustment block (33) is threaded with a lead screw (41). The outer end of the lead screw (41) is fixed with a knob (42). The height groove (40) has a thread that matches the lead screw (41). The lead screw (41) is movably connected to the height groove (40).

8. A multifunctional track and field training device as described in claim 3, characterized in that: The linkage component includes a sliding shell (25), which is fixed on the main frame (2). Sliding grooves (26) are opened at both ends of the sliding shell (25), and a rack is slidably connected in each sliding groove (26). One end of the rack on each side meshes with the first gear (23) of the arc-shaped sliding component on that side, and the other end is connected to the swing arm transmission component.

9. A multifunctional track and field training device as described in claim 8, characterized in that: The swing arm transmission assembly includes a toothed belt (19), a second gear (22), and a third gear (21). The second gear (22) and the third gear (21) are rotatably mounted on the upright plate (47). The second gear (22) meshes with the rack on the corresponding side, and the third gear (21) meshes with the second gear (22). The outer end face of the third gear (21) is coaxially fixed with a second synchronous pulley (20), and the outer end of the shaft (15) is coaxially fixed with a first synchronous pulley (18). The first synchronous pulley (18) and the second synchronous pulley (20) are connected by a toothed belt (19).

10. A multifunctional track and field training device as described in claim 9, characterized in that: The rack includes two rack bodies (24) with toothed shapes and a sliding rod (27) connecting the two rack bodies (24). One rack body (24) meshes with the first gear (23), and the other rack body (24) meshes with the second gear (22). The groove (26) has a limiting block at the middle position of the sliding rod (27). The limiting block has a sliding hole that matches the shape of the sliding rod (27). The sliding rod (27) is limited and slidably disposed in the sliding hole.

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