Combined sports teaching aid exercise device

Abstract

The present application relates to the technical field of sports equipment, and more specifically discloses a combined sports teaching aid exercise device, which comprises two housings, two support rods slidingly arranged in the housings, upper ends of the support rods penetrating through the housings and being fixedly connected to top seats, a support plate arranged in the housing, a controller and two sets of lifting mechanisms arranged on the upper side of the support plate, and a driving mechanism arranged on the lower side of the support plate, the driving mechanism selectively driving the lifting mechanisms through clutch control to realize independent or synchronous lifting of the support rods; a first insertion slot and a mounting groove are formed in the side of the top seat, a horizontal supporting plate is rotatably mounted in the mounting groove, and a plurality of horizontal rods are detachably connected between the two symmetrical top seats through a buckle mechanism; the device is beneficial to realizing flexible switching of three exercise modes of single bar, double bar and high jump, does not need to additionally purchase multiple independent devices, and simultaneously meets diversified sports teaching requirements.

Description

Technical Field

[0001] This invention relates to the field of sports equipment technology, and more specifically to a combined sports teaching and training device. Background Technology

[0002] Sports is a complex socio-cultural phenomenon. Based on the laws of human growth and development, skill formation and functional improvement, it is a conscious, purposeful and organized social activity that promotes all-round development, improves physical fitness and overall education level, enhances physical fitness and improves athletic ability, and improves lifestyle and quality of life. Sports can be divided into mass sports, professional sports, school sports and other categories.

[0003] Patent CN104722008A discloses a parallel bar for physical education, comprising two support poles and four uprights. Each of the four uprights has a base at its base, and each base is detachably connected to the ground by bolts. The upper end of each upright is connected to the support pole via an inverted L-shaped connecting rod. The lower end of the L-shaped connecting rod is rotatably and vertically connected to the upper end of the upright, and the upper end of the L-shaped connecting rod is connected to the support pole. The L-shaped connecting rod is equipped with a height scale and a width scale. The height scale is set along the vertical direction of the connecting rod, and the width scale is set along the circumference of the connecting rod. Each end of the support pole has a fluorescent part. A plastic sleeve is provided in the middle of the support pole. This invention allows for easy adjustment of the height and width of the parallel bars, and the fluorescent parts at the ends serve as a reminder at night. The plastic sleeve in the middle of the support pole provides students with a cushioning effect.

[0004] Existing physical education teaching equipment such as horizontal bars, parallel bars, and high jump equipment are independent devices. If it is necessary to switch training programs, the entire equipment must be disassembled and replaced. The operation requires multiple people to cooperate. It can only achieve height and width adjustment of the parallel bars in a single form. It cannot be combined to form different training equipment structures according to teaching needs, and the applicable scenarios are relatively limited. The horizontal bars of the parallel bars are mostly fixed by bolts. Each height adjustment requires repeated removal and removal of bolts, resulting in large positioning accuracy errors and safety hazards. The assembly and disassembly process is cumbersome and not conducive to quick switching of training modes. It lacks precise lifting control and safety protection mechanisms. During the height adjustment process, problems such as inaccurate positioning and movement jamming are prone to occur. Moreover, the equipment operation status cannot be fed back in time, posing safety hazards. Therefore, we propose a combined physical education teaching equipment. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a combined sports teaching and training device to solve the problems existing in the background art.

[0006] The present invention provides the following technical solution: a combined sports teaching and exercise equipment, comprising two shells, two support rods slidably arranged inside the shells, the upper ends of the support rods penetrating the shells and fixedly connected to the top seat, a support plate arranged inside the shells, a controller and two sets of lifting mechanisms arranged on the upper side of the support plate, and a drive mechanism arranged on the lower side, the drive mechanism selectively driving the lifting mechanism through clutch control to realize independent or synchronous lifting of the support rods; The top seat has a first slot and a mounting groove on its side. A horizontal support plate is rotatably installed in the mounting groove. A buckling mechanism is fixedly installed on the side of the top seat. Several crossbars are detachably connected between two symmetrical top seats through the buckling mechanism. Pins are provided at both ends of the crossbars. Positioning holes are provided on the side of the pins. Adjacent crossbars are fixedly spliced ​​together through a connecting tube. A second slot adapted to the pins is provided at both ends of the connecting tube. By combining the pin with the first slot, the device can be switched to form a horizontal bar or parallel bar; by using the horizontal locking of the horizontal support plate in conjunction with the horizontal bar, it can be switched to form a high jump.

[0007] Furthermore, the buckling mechanism includes a baffle, a straight rod, a spring, a baffle plate, and a ball. The baffle is fixedly connected to the side of the top seat, the straight rod slides through the baffle, the ball is fixedly connected to one end of the straight rod, the baffle plate is fixedly connected to the circumferential surface of the straight rod, the spring is sleeved on the circumferential surface of the straight rod, and the spring is located between the baffle plate and the baffle plate. After the pin is inserted into the first slot, the straight rod can automatically insert into the positioning hole under the action of the spring, and the crossbar can be fixed without tools.

[0008] Furthermore, each lifting mechanism includes a U-shaped frame, a ball screw, a screw sleeve, a reinforcing sleeve, and an I-beam plate. The U-shaped frame is fixedly connected to the upper side of the support plate, the ball screw is rotatably connected between the U-shaped frame and the upper inner wall of the outer shell, the screw sleeve is threadedly connected to the circumferential surface of the ball screw, the reinforcing sleeve is fixedly connected to the lower end of the support rod, and the I-beam plate is fixedly connected between the screw sleeve and the reinforcing sleeve.

[0009] Furthermore, the drive mechanism includes a servo motor, a pinion, a gear, a clutch pressure plate, and a friction plate. The servo motor is fixedly connected to the top of the support plate, the pinion is fixedly connected to the output end of the servo motor, two gears are provided and rotatably connected to the bottom of the support plate, and their upper ends are fixedly connected to the corresponding clutch pressure plates. Two friction plates are provided, which are respectively fixedly connected to the lower ends of the corresponding ball screws and frictionally engage with the corresponding clutch pressure plates.

[0010] Furthermore, a limiting rod is fixedly connected to the inner wall of the outer shell, and a support rod is slidably connected to the surface of the limiting rod. A grating unit is installed on the limiting rod and the reinforcing sleeve, and a storage battery is installed on the support plate. Both the grating unit and the storage battery are electrically connected to the controller.

[0011] Furthermore, an electric pedal is installed on the drive mechanism. The electric pedal is electrically connected to the controller. By stepping on the electric pedal, the engagement or disengagement of the clutch pressure plate and the friction plate is controlled, thereby realizing the on-demand switching of lifting power.

[0012] Furthermore, a storage rack is fixedly installed on the side of the outer shell, and the storage rack is equipped with several storage slots, in which the crossbar and the connecting cylinder can be placed.

[0013] The technical effects and advantages of this invention are as follows: 1. This invention, with its modular splicing structure, facilitates flexible switching between three training modes: single bar, parallel bars, and high jump. It eliminates the need to purchase multiple independent pieces of equipment, significantly reducing the cost of teaching equipment and the area occupied. It is suitable for teaching scenarios with limited space, such as primary and secondary schools, while meeting diverse physical education teaching needs. Furthermore, the crossbars can be extended in length through connecting tubes, allowing multiple crossbars to be connected in series as needed to adjust the total length and adapt to different venue sizes and training requirements.

[0014] 2. This invention, by incorporating a snap-fit ​​mechanism and a ball screw lifting mechanism, simplifies the assembly and disassembly process of components, allows for quick fixing and separation of the crossbar without tools, and improves the accuracy of height adjustment. It avoids the problems of cumbersome operation and inaccurate positioning of traditional equipment, thereby improving the efficiency of equipment form switching and the safety of use in teaching.

[0015] 3. This invention, by incorporating a grating unit, servo motor braking function, electric pedal clutch control, and storage rack, facilitates real-time monitoring of the support rod's lifting status to ensure the equipment's levelness. Multiple protection mechanisms prevent accidental slippage, while also enabling the orderly storage of scattered parts. This addresses the pain points of traditional teaching aids being easily lost and lacking safety feedback, thereby improving the overall practicality and ease of management of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic cross-sectional view of the outer casing of the present invention; Figure 4 This is a schematic diagram of the top seat structure of the present invention; Figure 5 This is a schematic diagram of the docking cylinder structure of the present invention; Figure 6 This is a schematic diagram of the crossbar structure of the present invention; Figure 7 This is a schematic diagram of the driving mechanism of the present invention.

[0017] The attached diagram is labeled as follows: 1. Outer shell; 2. Support rod; 201. Limiting rod; 3. Support plate; 4. Drive mechanism; 401. Servo motor; 402. Pinion; 403. Gear; 404. Clutch pressure plate; 405. Friction plate; 5. Lifting mechanism; 501. U-shaped frame; 502. Ball screw; 503. Screw sleeve; 504. Reinforcing sleeve; 505. I-beam plate; 6. Top seat; 601. First slot; 602. Mounting slot; 603. Horizontal support plate; 7. Buckling mechanism; 701. Baffle; 702. Straight rod; 703. Spring; 704. Baffle plate; 705. Pulley; 8. Crossbar; 801. Pin; 802. Positioning hole; 9. Connecting cylinder; 901. Second slot; 902. Socket head bolt; 10. Battery; 11. Storage rack; 1101. Storage slot. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The combined sports teaching and training equipment involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figure 1 - Figure 7 The present invention provides a combined sports teaching and training equipment, including two outer shells 1. Two support rods 2 are slidably arranged inside the outer shells 1. The upper ends of the support rods 2 pass through the outer shells 1 and are fixedly connected to the top seat 6. A support plate 3 is arranged inside the outer shells 1. A controller and two sets of lifting mechanisms 5 are arranged on the upper side of the support plate 3, and a drive mechanism 4 is arranged on the lower side. The drive mechanism 4 selectively drives the lifting mechanism 5 through clutch control, so as to realize the independent or synchronous lifting of the support rods 2. The top seat 6 has a first slot 601 and a mounting groove 602 on its side. A horizontal support plate 603 is rotatably installed in the mounting groove 602. A buckling mechanism 7 is fixedly installed on the side of the top seat 6. Several crossbars 8 are detachably connected between two symmetrical top seats 6 through the buckling mechanism 7. Pins 801 are provided at both ends of the crossbars 8. Positioning holes 802 are opened on the side of the pins 801. Adjacent crossbars 8 are fixedly spliced ​​together through a docking tube 9. The docking tube 9 has a second slot 901 at both ends that is compatible with the pins 801. By combining the pin 801 with the first slot 601, the configuration can be switched to form a single bar or parallel bars; by using the horizontal locking of the horizontal support plate 603 in conjunction with the horizontal bar 8, the configuration can be switched to form a high jump configuration.

[0020] In this embodiment, it should be specifically explained that: the outer shell 1 is mainly used to install two support rods 2. The support rods 2 are the core components for realizing height adjustment and top structural support. The support plate 3 serves to separate the internal space of the outer shell 1, fix the controller, drive mechanism 4 and lifting mechanism 5, forming a layout of "upper layer control and adjustment, lower layer power output", ensuring that each component is compact and functionally independent. The drive mechanism 4, as the power source, transmits power to the lifting mechanism 5 through friction or gear meshing, and then the lifting mechanism 5 converts the rotational motion into linear motion, driving the support rods 2 to slide up and down along the outer shell 1, ultimately achieving the height adjustment of the top seat 6. Adjustment; This process precisely controls the start and stop of the drive mechanism 4 through the controller, and the height of the top seat 6 can be flexibly adjusted according to the teaching scenario, making it more adaptable; The first slot 601 on the side of the top seat 6 is used to cooperate with the pin 801 of the crossbar 8 to achieve quick docking between the crossbar 8 and the top seat 6; Several crossbars 8 are spliced ​​together into a long bar through the docking tube 9, and the pins 801 are quickly fixed to the second slots 901 through the internal hex bolts 902. The two ends of the long bar are fixed in the first slot 601 through the pins 801. One or two long bars can be installed as needed, and the two core exercise forms of single bar and parallel bar can be quickly switched, making it multifunctional; The slot 602 is installed in The horizontal support plate 603 is rotatable and adjustable. When not in use, it can be stored in the slot without taking up space. The horizontal support plate 603 is connected to the inner wall of the mounting slot 602 via a damping pivot. It can stop at any angle within the range of 0-180° during rotation. When rotated to a completely horizontal state, it forms a stable support, preventing downward tilting under force. It can support the crossbar 8 for use in high jump. Specifically, first, adjust the support rods 2 of the two symmetrical shells 1 to the same height, and then rotate the horizontal support plate 603 to a horizontal state. Take several crossbars 8 and splice them together through the connecting tube 9 to form a long bar, so that the total length of the long bar meets the requirements of the high jump bar. Then, place the long bar on the horizontal support plate 6 of the two top seats 6. On the 03, the height of the long bar on the horizontal support plate 603 is adjusted by adjusting the height of the support rod 2 to meet different exercise needs. The length of the crossbar 8 is extended through the connecting tube 9. The length of a single crossbar 8 is 1.2-1.5m, and the length of the connecting tube 9 is 0.2-0.4m. By splicing 1-3 crossbars 8 with the connecting tube 9, a crossbar assembly with a length of 1.5-4.5m can be formed to adapt to different site sizes. If a whole integrated structure is used, multiple lengths need to be customized according to different sites, which increases procurement costs and storage difficulty. However, the splicing design can form multiple lengths by combining a small number of crossbars 8, reducing costs and making storage convenient.

[0021] The main difference between this embodiment and existing technologies lies in its modular, multi-functional integrated design, which breaks through the limitations of traditional single-form, fixed structures in sports equipment. It achieves flexible switching between three mainstream training functions—horizontal bar, parallel bars, and high jump—with fewer core components. It also offers significant advantages in structural adaptability, ease of operation, and practicality for teaching. Specifically, in existing technologies, horizontal bars, parallel bars, and high jump equipment are mostly independent instruments, requiring separate purchase and occupying separate spaces, and their functions cannot be reused. In contrast, this embodiment utilizes the rotational support characteristics of the horizontal support plate 603 and the modular splicing capability of the crossbar 8 and connecting cylinder 9 to quickly switch between the three functions: parallel bars... Parallel bar configuration: Several horizontal bars 8 and connecting tubes 9 are spliced ​​together to form two long bars, which are then fixed to the first slot 601 of the symmetrical top seat 6 via a snap-fit ​​mechanism 7, forming a standard parallel bar; Horizontal bar configuration: A long bar is extended to the appropriate length via the connecting tube 9 and fixed to the first slot 601 of the symmetrical top seat 6 via a snap-fit ​​mechanism 7, forming a standard horizontal bar; High jump configuration: The horizontal support plate 603 is rotated to a horizontal position, and several horizontal bars 8 and connecting tubes 9 are spliced ​​together to form a long bar of the appropriate length, which is then placed on the horizontal support plate 603 for use; No additional independent equipment is required, which greatly reduces the cost of purchasing teaching equipment and the area occupied by the site, and is especially suitable for the scenario where the sports field in primary and secondary schools is limited.

[0022] Reference Figure 3 - Figure 4 The latching mechanism 7 includes a baffle 701, a straight rod 702, a spring 703, a baffle 704, and a ball 705. The baffle 701 is fixedly connected to the side of the top seat 6. The straight rod 702 slides through the baffle 701. The ball 705 is fixedly connected to one end of the straight rod 702. The baffle 704 is fixedly connected to the circumferential surface of the straight rod 702. The spring 703 is sleeved on the circumferential surface of the straight rod 702 and is located between the baffle 704 and the baffle 701. After the pin 801 is inserted into the first slot 601, the straight rod 702 can be automatically inserted into the positioning hole 802 under the action of the spring 703, and the crossbar 8 can be fixed without tools.

[0023] In this embodiment, it should be specifically explained that: the baffle 701 is used to support the sliding of the straight rod 702, and the straight rod 702 slides back and forth through the baffle 701; the ball 705 is for manual operation by the user; and the baffle 704 on the circumferential surface is used to limit the spring 703. The spring 703 is the reset power source, sleeved on the straight rod 702 and located between the baffle 704 and the baffle 701, and drives the straight rod 702 to lock automatically through elastic deformation; during installation, manually moving the ball 705 causes the straight rod 702 to slide outward, and the baffle 704 simultaneously compresses the spring 703. At this time, the pin 801 is inserted into the first slot 601, and releasing the ball 705 causes the spring 703 to rebound and push the straight rod 702 through the positioning. Hole 802 automatically locks the pin 801 without additional tools; during disassembly, simply move the lever 705 again to disengage the straight rod 702 from the positioning hole 802, making it simple and convenient to use, much faster than traditional bolt connections; the end of the straight rod 702 has a guide chamfer for precise insertion into the positioning hole 802, avoiding jamming; the spring 703 is a 65Mn stainless steel compression spring with an elastic coefficient of 2-3N / mm, capable of withstanding ≥10,000 cycles of reciprocating deformation without failure; the baffle 704 is bolted to the straight rod 702, and the thickness of the baffle 701 is ≥3mm, ensuring no deformation under force and guaranteeing that the horizontal bar 8 is secure after locking, suitable for the load-bearing requirements of parallel bars, horizontal bars, and high jump.

[0024] Reference Figure 2 - Figure 3 Each lifting mechanism 5 includes a U-shaped frame 501, a ball screw 502, a screw sleeve 503, a reinforcing sleeve 504, and an I-beam 505. The U-shaped frame 501 is fixedly connected to the upper side of the support plate 3. The ball screw 502 is rotatably connected between the U-shaped frame 501 and the upper inner wall of the outer shell 1. The screw sleeve 503 is threadedly connected to the circumferential surface of the ball screw 502. The reinforcing sleeve 504 is fixedly connected to the lower end of the support rod 2. The I-beam 505 is fixedly connected between the screw sleeve 503 and the reinforcing sleeve 504.

[0025] In this embodiment, it should be specifically explained that: the U-shaped frame 501 serves as the rotating support base for the ball screw 502, ensuring that it does not deviate during operation; the ball screw 502 is the transmission core, rotatably connected between the U-shaped frame 501 and the inner wall of the outer casing 1 via bearings at both ends, converting rotational motion into linear motion; the screw sleeve 503 is threadedly engaged with the ball screw 502, serving as an intermediate carrier for power transmission; the reinforcing sleeve 504 is fixed to the lower end of the support rod 2, used to enhance the connection strength between the support rod 2 and the I-beam 505; both ends of the I-beam 505 are respectively connected to the screw sleeve 502. 03 and the reinforcing sleeve 504 are fixed to realize the synchronous transmission of the linear motion of the lead screw sleeve 503 to the support rod 2; when the drive mechanism 4 transmits power to the ball screw 502, the ball screw 502 rotates around its own axis. Since the U-shaped frame 501 restricts the rotational freedom of the lead screw sleeve 503, the lead screw sleeve 503 makes up-down linear motion along the axis of the ball screw 502; the lead screw sleeve 503 drives the reinforcing sleeve 504 to move synchronously through the I-beam plate 505, thereby pulling the support rod 2 to slide along the inner wall of the outer shell 1, and finally realizing the height adjustment of the top seat 6 and the top structure. Compared to traditional gear and rack transmission, this transmission method has lower frictional resistance, higher transmission accuracy, and no jamming during lifting. The ball screw 502 is precision ground with a pitch error of ≤0.1mm, ensuring the lifting accuracy of the screw sleeve 503. The I-beam 505 is made of aluminum alloy in one piece with a thickness of ≥8mm to prevent bending deformation under stress and ensure synchronous movement between the screw sleeve 503 and the support rod 2. Each lifting mechanism 5 corresponds independently to a support rod 2. With the controller and grating unit on the support plate 3, the synchronous start and stop and speed calibration of the lifting mechanisms 5 on both sides can be realized to prevent the top seat 6 from tilting and ensure the levelness when using the parallel bars and high jump functions. The ball screw 502 is made of high-strength alloy steel with a rated dynamic load of ≥5kN. The screw sleeve 503 is made of wear-resistant copper alloy. The reinforcing sleeve 504 is fixed to the support rod 2 by welding. The overall structure can withstand a vertical load of ≥150kg for a single support rod 2, which fully meets the load-bearing requirements when multiple people use the parallel bars or high jump training at the same time. Long-term use is not prone to wear of transmission components or structural failure.

[0026] Reference Figure 3 , Figure 4 and Figure 7 The drive mechanism 4 includes a servo motor 401, a pinion 402, a gear 403, a clutch pressure plate 404, and a friction plate 405. The servo motor 401 is fixedly connected to the top of the support plate 3. The pinion 402 is fixedly connected to the output end of the servo motor 401. Two gears 403 are provided and rotatably connected to the bottom of the support plate 3. Their upper ends are fixedly connected to the corresponding clutch pressure plate 404. Two friction plates 405 are provided and are fixedly connected to the lower end of the corresponding ball screw 502, respectively, and are in frictional engagement with the corresponding clutch pressure plate 404.

[0027] In this embodiment, it should be specifically explained that: the drive mechanism 4 provides power to the lifting mechanism 5, and the servo motor 401 is the power source outputting stable torque; the pinion 402 is coaxially fixed with the output end of the servo motor 401, responsible for transmitting the motor power to the subsequent gear structure; two large gears 403 are provided and rotatably connected to the bottom of the support plate 3, and achieve deceleration and torque increase by meshing with the pinion 402; the clutch pressure plate 404 is coaxially fixed with the large gears 403 and is the "switch component" for power transmission; the friction plate 405 receives power through frictional engagement with the clutch pressure plate 404, and finally drives the ball screw 502 to rotate; when it is necessary to adjust the height of the support rod 2, the controller receives the command and starts the servo motor 401, which drives the pinion 402 to rotate through the output end of the servo motor 401, and then drives the two large gears 403 to rotate synchronously, and the large gears 403 drive the clutch pressure plate 404 to rotate; at this time, by controlling the electric pedal, the clutch pressure plate 404 is made to fit against the friction plate 405, and the power is transmitted to the friction plate 405 by friction, thereby driving the ball screw 502 to rotate. Rotation of lever 502 triggers the operation of lifting mechanism 5. If it is necessary to pause lifting or urgently cut off power, the controller outputs a signal to the electric pedal, causing the clutch pressure plate 404 to separate from the friction plate 405, interrupting power transmission and stopping the ball screw 502 from rotating. This achieves "on-demand switching," improving operational safety. Furthermore, the clutch pressure plate 404 and friction plate 405 can be individually engaged or disengaged, providing a basis for single / double lever functions. The servo motor 401 has a braking function; it can immediately self-lock in case of power failure or emergency stop, preventing the ball screw 502 from rotating. The support rod 2 unexpectedly slides down due to the reverse rotation caused by gravity, further ensuring the safety of equipment use; the pinion 402, the large gear 403, and the friction disc 405 are all made of No. 45 steel, and the surface is carburized and quenched, making them wear-resistant and impact-resistant; the clutch pressure plate 404 is equipped with asbestos-based friction plates with a high coefficient of friction, ensuring that it is not easy to slip during power transmission, and the friction plates can be replaced individually, reducing the later maintenance cost; the rotational connection between the large gear 403 and the support plate 3 adopts a deep groove ball bearing, which reduces rotational friction and extends the service life of the components.

[0028] Reference Figure 3 A limit rod 201 is fixedly connected to the inner wall of the outer casing 1, and a support rod 2 is slidably connected to the surface of the limit rod 201. A grating unit is installed on the limit rod 201 and the reinforcing sleeve 504. A storage battery 10 is installed on the support plate 3. Both the grating unit and the storage battery 10 are electrically connected to the controller.

[0029] In this embodiment, it should be specifically explained that: the limiting rod 201 is vertically fixed along the inner wall of the outer shell 1 and parallel to the sliding path of the support rod 2, providing guidance and limiting for the lifting and lowering of the support rod 2, preventing the support rod 2 from shifting left and right, swaying or rotating due to force when sliding up and down, ensuring that the support rod 2 always moves stably in the vertical direction, thereby ensuring the levelness and structural stability of the top seat 6 and the crossbar 8; when the lifting mechanism 5 drives the support rod 2 to rise and fall, the limiting rod 201 can counteract the radial force that may be generated during the transmission of the ball screw 502, preventing the lifting mechanism 5 from experiencing a decrease in transmission accuracy due to force deviation; the limiting rod 201 and The grating unit on the reinforcing sleeve 504 is a "displacement and velocity monitoring terminal". It transmits data to the controller through electrical connection to provide precise data support for the lifting and lowering adjustment of the support rod 2. A grating ruler is arranged vertically on the limit rod 201, and a grating reading head is installed on the reinforcing sleeve 504. The two form a grating detection component. When the lifting mechanism 5 drives the support rod 2 to move the reinforcing sleeve 504 up and down, the grating reading head reads the scale information on the grating ruler in real time and converts it into the lifting displacement and moving speed of the support rod 2. This ensures that the support rods on both sides lift and lower synchronously, avoids the top seat 6 from tilting, and ensures the levelness safety when using the parallel bars and high jump.

[0030] Reference Figure 3 An electric pedal is installed on the drive mechanism 4. The electric pedal is electrically connected to the controller. By stepping on the electric pedal, the clutch pressure plate 404 and the friction plate 405 are engaged or disengaged, so as to realize the on-demand switching of lifting power.

[0031] In this embodiment, it should be specifically explained that: the electric pedal is the control component between the drive mechanism 4 and the lifting mechanism 5. It transmits the manual operation signal to the controller through an electrical connection, and then the controller regulates the engagement and disengagement of the clutch pressure plate 404 and the friction plate 405 in the drive mechanism 4 to achieve on-demand power transmission, taking into account both operational flexibility and safety. When it is necessary to adjust the height of the support rod 2, the user presses the clutch pedal and sends a power-on signal to the controller. The controller controls the clutch pressure plate 404 to engage with the friction plate 405. The friction force transmits the power of the servo motor 401 to the friction plate 405 through the pinion 402 and the gear 403, thereby driving the ball screw 502 to rotate and triggering the lifting mechanism 5 to drive the support rod 2 to rise and fall. If it is necessary to pause the rise and fall, the user releases the clutch pedal, and the pedal sends a power-off signal. The clutch pressure plate 404 and the friction plate 405 separate, the power transmission is interrupted, and the support rod 2 immediately stops moving. In an emergency, releasing the pedal can quickly cut off the power and avoid the risk of the support rod 2 rising and falling unexpectedly.

[0032] Reference Figure 1 A storage rack 11 is fixedly installed on the side of the outer shell 1. Several storage slots 1101 are installed on the storage rack 11. The crossbar 8 and the docking cylinder 9 can be placed in the storage slots 1101.

[0033] In this embodiment, it should be specifically explained that: the storage rack 11 is fixed to the side of the outer shell 1 by bolts, forming an integral structure with the main body of the outer shell 1, and orderly storing the idle crossbar 8 and connecting cylinder 9, solving the problem of traditional sports teaching aid parts being scattered and easily lost, and occupying space when stacked, while facilitating quick access to parts during teaching and improving equipment utilization efficiency; the storage slot 1101 is customized according to the size of the crossbar 8 and connecting cylinder 9, and the depth of the slot matches the length to ensure that the crossbar 8 does not shake after being placed in.

[0034] The working principle of this invention: The main problem solved by this embodiment is that, through a modular and multifunctional integrated design, it solves the problem that existing sports teaching aids can only achieve a single form and cannot flexibly switch between single bar, parallel bar, and high jump functions, resulting in limited applicable scenarios and the need to repeatedly purchase multiple sets of equipment. At the same time, with the addition of a storage battery 10, it simultaneously solves the problems of traditional teaching aids having scattered parts that are easy to lose, occupy a lot of space when stacked, and are inconvenient to use in teaching. The splicing structure is simple and easy to operate, solving the problem that traditional equipment parts rely on bolts for connection and that assembly and disassembly operations are cumbersome and time-consuming. It greatly improves the efficiency of equipment switching between different exercise functions and adapts to the need for frequent adjustments to the form of equipment in teaching scenarios.

[0035] The specific steps are as follows: S1. Equipment preparation: Confirm that the outer casing 1 is placed stably, the crossbars 8 and the docking cylinders 9 are undamaged, the battery 10 has sufficient power, and the electrical components such as the controller, grating unit, and electric pedal are connected normally; according to teaching needs, take out the corresponding number of crossbars 8 and docking cylinders 9 from the storage slots 1101 of the storage rack 11. S2. Functional form assembly and adjustment: S201, Single Bar Form: First, insert the pin 801 of the horizontal bar 8 into the second slot 901 of the docking cylinder 9, and tighten it with the hex bolt 902 to form a long bar. Then, manually move the ball 705 of the buckle mechanism 7 to drive the straight bar 702 to slide and compress the spring 703. Insert the pins 801 at both ends of the long bar into the symmetrical first slot 601, release the ball 705, and the spring 703 will rebound to make the straight bar 702 pass through the positioning hole 802 to complete the fixation. Then, step on one of the electric pedals, and the controller starts the servo motor 401. The power is transmitted to the corresponding clutch pressure plate 404 through the small gear 402 and the large gear 403. It is in contact with the friction plate 405 to drive the ball screw 502 to rotate. The screw sleeve 503 drives the corresponding support rod 2 to rise and fall along the limit rod 201. Combined with the feedback data of the grating unit, it is adjusted to a suitable height. Release the pedal to fix the position. S202, Parallel Bar Form: Splicing Long Bars: Following the steps of S201 in the single bar form, the horizontal bar 8 and the connecting tube 9 are spliced ​​together to form two long bars that meet the length requirements and are the same length. The pins 801 at both ends of the two long bars are inserted into the corresponding first slots 601. After being fixed by the buckle mechanism 7, the electric pedal and the servo motor 401 are used to make the corresponding clutch pressure plate 404 fit with the friction plate 405. Finally, the height of the two long bars is adjusted to the appropriate position. S203, High Jump Form: First, manually rotate the horizontal support plate 603 in the mounting slot 602 to a completely horizontal state. Then, splice the crossbar 8 and the connecting tube 9 to form a long bar that meets the high jump length requirements. Adjust the support rods 2 on both sides to the same height through the servo motor 401 to ensure that the horizontal support plate 603 is horizontal. After releasing the pedal, place the long bar on the horizontal support plate 603. S3. Equipment storage after use: Manually move the ball 705 to remove the long rod; unscrew the hex bolt 902 on the connecting cylinder 9 to separate the crossbar 8 from the connecting cylinder 9, and then place the crossbar 8 and the connecting cylinder 9 into the storage slot 1101 respectively, ensuring that they are neatly arranged. Finally, control the servo motor 401 to reverse and lower the support rod 2 to the lowest position, turn off the controller power, and complete the storage.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined physical education and training device, comprising two outer shells (1), characterized in that: Two support rods (2) are slidably arranged inside the outer shell (1). The upper end of the support rod (2) passes through the outer shell (1) and is fixedly connected to the top seat (6). A support plate (3) is arranged inside the outer shell (1). A controller and two sets of lifting mechanisms (5) are arranged on the upper side of the support plate (3), and a drive mechanism (4) is arranged on the lower side. The drive mechanism (4) selectively drives the lifting mechanism (5) through clutch control, so as to realize the independent or synchronous lifting of the support rod (2). The top seat (6) has a first slot (601) and a mounting groove (602) on its side. A horizontal support plate (603) is rotatably installed in the mounting groove (602). A buckle mechanism (7) is fixedly installed on the side of the top seat (6). Several crossbars (8) are detachably connected between two symmetrical top seats (6) through the buckle mechanism (7). Pins (801) are provided at both ends of the crossbars (8). Positioning holes (802) are opened on the side of the pins (801). Adjacent crossbars (8) are fixedly spliced ​​together through a docking tube (9). A second slot (901) that matches the pins (801) is provided at both ends of the docking tube (9). By combining the pin (801) with the first slot (601), the bar can be switched to form a single bar or parallel bar; by using the horizontal locking of the horizontal support plate (603) in conjunction with the horizontal bar (8), the bar can be switched to form a high jump.

2. The combined physical education and training equipment according to claim 1, characterized in that: The buckling mechanism (7) includes a baffle (701), a straight rod (702), a spring (703), a baffle plate (704), and a ball (705). The baffle (701) is fixedly connected to the side of the top seat (6). The straight rod (702) slides through the baffle (701). The ball (705) is fixedly connected to one end of the straight rod (702). The baffle plate (704) is fixedly connected to the circumferential surface of the straight rod (702). The spring (703) is sleeved on the circumferential surface of the straight rod (702) and is located between the baffle plate (704) and the baffle plate (701). After the pin (801) is inserted into the first slot (601), the straight rod (702) can be automatically inserted into the positioning hole (802) under the action of the spring (703). The crossbar (8) can be fixed without tools.

3. The combined physical education and training equipment according to claim 2, characterized in that: Each lifting mechanism (5) includes a U-shaped frame (501), a ball screw (502), a screw sleeve (503), a reinforcing sleeve (504), and an I-beam plate (505). The U-shaped frame (501) is fixedly connected to the upper side of the support plate (3). The ball screw (502) is rotatably connected between the U-shaped frame (501) and the upper inner wall of the outer shell (1). The screw sleeve (503) is threadedly connected to the circumferential surface of the ball screw (502). The reinforcing sleeve (504) is fixedly connected to the lower end of the support rod (2). The I-beam plate (505) is fixedly connected between the screw sleeve (503) and the reinforcing sleeve (504).

4. The combined physical education and training equipment according to claim 3, characterized in that: The drive mechanism (4) includes a servo motor (401), a pinion (402), a gear (403), a clutch pressure plate (404), and a friction plate (405). The servo motor (401) is fixedly connected to the top of the support plate (3). The pinion (402) is fixedly connected to the output end of the servo motor (401). There are two gears (403) and they are rotatably connected to the bottom of the support plate (3). Their upper ends are fixedly connected to the corresponding clutch pressure plate (404). There are two friction plates (405), which are fixedly connected to the lower end of the corresponding ball screw (502) and are in frictional engagement with the corresponding clutch pressure plate (404).

5. The combined physical education and training equipment according to claim 4, characterized in that: The inner wall of the outer shell (1) is fixedly connected to a limiting rod (201), and the support rod (2) is slidably connected to the surface of the limiting rod (201). A grating unit is installed on the limiting rod (201) and the reinforcing sleeve (504). A storage battery (10) is installed on the support plate (3). Both the grating unit and the storage battery (10) are electrically connected to the controller.

6. The combined physical education and training equipment according to claim 5, characterized in that: An electric pedal is installed on the drive mechanism (4). The electric pedal is electrically connected to the controller. By stepping on the electric pedal, the clutch pressure plate (404) and the friction plate (405) are engaged or disengaged, so as to realize the on-demand switching of lifting power.

7. A combined physical education and training device according to claim 6, characterized in that: A storage rack (11) is fixedly installed on the side of the outer shell (1). Several storage slots (1101) are installed on the storage rack (11). The crossbar (8) and the docking cylinder (9) can be placed in the storage slots (1101).

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