A two-way intelligent treadmill

Abstract

This invention relates to the field of fitness equipment technology, and more particularly to a bidirectional intelligent treadmill, comprising a base with a running belt and a control system. Two rotating and retractable supports are mounted on the base, and handrails are movably mounted on the supports for easy storage and user handholds. Storage racks for storing the handrails are fixedly installed on both sides of the base. This invention integrates three modes: forward running, backward walking, and reciprocating motion, achieving multi-purpose functionality and meeting diverse scenarios such as rehabilitation training and interval training. Simultaneously, the rotating rod, fixing blocks, and storage racks enable quick folding and storage of the supports and handrails. For the backward walking mode, a maximum speed limit is set, handrail sensor-activated forced start, and gait abnormality monitoring mitigates the risk of falls. The system collects heart rate and cadence data in real time, automatically adjusting the speed based on heart rate to protect cardiac safety, and automatically matching the running belt speed based on cadence to optimize gait coordination.

Description

Technical Field

[0001] This invention relates to the field of fitness equipment technology, and in particular to a two-way intelligent treadmill. Background Technology

[0002] Treadmills are currently the most popular home and commercial aerobic fitness equipment. However, existing treadmills have the following shortcomings in terms of function and structure.

[0003] Currently available treadmills have limited functionality, with most only supporting forward running and lacking professional modes such as backward walking and reciprocating motion. Furthermore, when walking backward, they lack dedicated safety mechanisms such as speed limits, handrail sensors, and gait monitoring, which can easily lead to users losing balance and falling. At the same time, traditional treadmill handrails are mostly fixed structures that cannot be folded for storage, resulting in large product packaging and high transportation and idle costs. In addition, their control systems are mostly fixed inside the treadmill, making remote upgrades impossible, and they lack real-time intelligent linkage adjustment of physiological parameters such as heart rate and cadence, indicating significant deficiencies in exercise science and product iteration capabilities. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of existing treadmills, such as limited functionality, lack of backward walking and reciprocating exercise modes, inability to fold and store handrails, inability to be remotely upgraded, and lack of intelligent linkage adjustment of physiological parameters. Therefore, this invention proposes a bidirectional intelligent treadmill.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A two-way intelligent treadmill includes a base with a running belt and a control system. The base is provided with two rotating and storage brackets. The brackets are movably provided with handrails for easy storage and for user hand support. Storage racks for storing the handrails are fixedly installed on both sides of the base. The control system includes: a motor, a motor drive system, a main control unit, a sensor detection module, a communication module, and a human-machine interaction module; The motor is connected to the running belt drive, the motor drive system is electrically connected to the motor, and the main control unit is electrically connected to the motor drive system, the sensing and detection module, the communication module, and the human-machine interaction module respectively. The motor drive system includes a motor drive circuit and a forward / reverse control unit. The forward / reverse control unit controls the motor to rotate forward or in reverse according to the steering control signal output by the main control unit. The sensing and detection module includes a heart rate sensor, a step frequency sensor, a speed sensor, an emergency stop switch, and a limit sensor. The communication module includes a wireless communication unit; The main control unit stores a control program. When the control program is run, it controls the treadmill to perform forward running mode, reverse walking mode, and reciprocating motion mode, and performs OTA remote upgrades through the communication module.

[0006] Preferably, a rotating rod integrally connected to the bracket is rotatably mounted on the base, an inner rod is slidably sleeved inside the rotating rod, and a fixing block distributed circumferentially and used to fix the position of the bracket is fixedly mounted on the inner rod.

[0007] Preferably, the included angle between two adjacent fixing blocks is 60°, and the included angle between the bracket and the base after the bracket is unfolded is 60°.

[0008] Preferably, the base has a fixed cavity and a sliding cavity corresponding to the fixed block, the fixed cavity and the sliding cavity are connected, the rotating rod has a sliding groove corresponding to the fixed block, the fixed cavity is a hexagonal structure corresponding to the fixed block, and the bracket is threaded with a fixing bolt for circumferentially fixing the inner rod.

[0009] Preferably, an operating platform is fixedly installed between the two brackets. The lower end of the operating platform has a clearance groove corresponding to the base. The handrail is hinged to the operating platform. An installation block is fixedly installed at the lower end of the handrail. A guide rod is fixedly installed inside the handrail. A slider is slidably sleeved on the guide rod. A locking block for fixing the position of the handrail is fixedly installed on one side of the slider. A spring for resetting the slider is sleeved on the guide rod. A locking bolt for fixing the slider is threaded onto the handrail.

[0010] Preferably, the storage rack has a storage groove corresponding to the armrest, the storage groove has a placement groove corresponding to the mounting block, and the inner wall of the placement groove and the side wall of the operating table have locking grooves corresponding to the locking block.

[0011] Preferably, in the reverse walking mode, the main control unit automatically sets a maximum speed limit. The treadmill also includes a sensor installed on the handrail to detect whether the user's hands are gripping the handrail. The main control unit refuses to start the machine when the sensor does not detect the hands gripping the handrail. During operation, the main control unit judges the stability of the user's gait based on the step frequency data detected by the step frequency sensor. When the step frequency data shows abnormal fluctuations or interruptions, the main control unit controls the motor to decelerate and stop.

[0012] Preferably, in the reciprocating motion mode, the main control unit controls the running belt to automatically move forward and backward within a preset range according to the user-set reciprocating distance, number of reciprocations, movement speed and reversing buffer time. When the belt reaches the boundary of the range, the main control unit controls the motor to smoothly reverse within the reversing buffer time and accumulates the number of reciprocations. When the accumulated number of reciprocations reaches the set number of reciprocations, the machine automatically stops.

[0013] Preferably, the main control unit compares the heart rate data detected by the heart rate sensor with a preset safety threshold, and automatically reduces the speed of the running belt or controls the motor to stop operating when the heart rate exceeds the safety threshold; The main control unit automatically fine-tunes the speed of the running belt based on the step frequency data detected by the step frequency sensor, so that the speed of the running belt matches the user's step frequency.

[0014] Preferably, the OTA remote upgrade includes: the main control unit connects to the server through the communication module to detect whether a new version of firmware or algorithm package exists; if it exists, the upgrade package is downloaded and the downloaded upgrade package is verified; after the verification is successful, the upgrade installation is performed; if the upgrade fails, it is automatically rolled back to the previous stable version.

[0015] Compared with the prior art, the present invention has the following advantages: 1. This invention integrates three modes: forward running, backward walking, and reciprocating motion, to achieve multiple uses in one machine and meet diverse scenarios such as rehabilitation training and interval training. At the same time, with the cooperation of the rotating rod, fixing block and storage rack, the support and handrail can be quickly folded and stored, reducing packaging and idle space, and effectively reducing transportation and storage costs.

[0016] 2. This invention sets a maximum speed limit for the backward walking mode, forces activation via handrail sensing, and monitors gait abnormalities to prevent the risk of falls from the source; the system collects heart rate and cadence data in real time, automatically adjusts the speed according to the heart rate to protect the heart, and automatically matches the running belt speed according to the cadence to optimize gait coordination, which helps to improve the scientific nature and safety of exercise.

[0017] 3. This invention supports OTA remote upgrades, allowing for iterative updates of firmware and motion algorithms without hardware replacement, which helps extend the product's lifespan. Combined with multiple hardware and software protection mechanisms such as overcurrent, overheating, limit switches, and emergency stops, it constructs a comprehensive safety assurance system to ensure safe use under various abnormal operating conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a bidirectional intelligent treadmill proposed in this invention; Figure 2 This is a cross-sectional view of the base of a bidirectional intelligent treadmill proposed in this invention; Figure 3 This is a cross-sectional view of the rotating rod of a bidirectional intelligent treadmill proposed in this invention; Figure 4 This is a cross-sectional view of the handrail of a bidirectional intelligent treadmill proposed in this invention; Figure 5 This is a cross-sectional view of a storage rack for a bidirectional intelligent treadmill proposed in this invention; Figure 6 This is a system overall structure block diagram of a bidirectional intelligent treadmill proposed in this invention; Figure 7 This is a schematic diagram of the multi-mode control process of a bidirectional intelligent treadmill proposed in this invention; Figure 8 This is a schematic diagram of the reciprocating motion control of a bidirectional intelligent treadmill proposed in this invention; Figure 9 This is a flowchart illustrating the OTA upgrade process of a bidirectional intelligent treadmill proposed in this invention.

[0019] In the diagram: 1. Base; 2. Rotating rod; 3. Bracket; 4. Inner rod; 5. Fixing block; 6. Fixing cavity; 7. Sliding cavity; 8. Operating table; 9. Handrail; 10. Mounting block; 11. Guide rod; 12. Slider; 13. Spring; 14. Locking block; 15. Storage rack. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figures 1-9 A two-way intelligent treadmill includes a base 1 with a running belt and a control system. The base 1 has two rotatable and retractable supports 3. See the attached instruction manual for details. Figure 1 The base 1 is the main support of the treadmill, and the running belt loop is set in the running platform area of ​​the base 1 to support the user to complete walking and running exercises.

[0022] Two supports 3 are symmetrically distributed on the left and right sides of the base 1. They can be rotated around the axis to achieve two states: upright unfolding and horizontal lying down, taking into account both the support during use and the need to reduce the size when not in use.

[0023] A rotating rod 2, which is integrally connected to the bracket 3, is rotatably mounted on the base 1. An inner rod 4 is slidably sleeved inside the rotating rod 2. Fixing blocks 5, which are circumferentially distributed and used to fix the position of the bracket 3, are fixedly mounted on the inner rod 4.

[0024] The rotating rod 2 is horizontally mounted along the width of the base 1, and its two ends are fixedly connected to the bottom of the corresponding bracket 3. When the bracket 3 rotates, it can drive the rotating rod 2 to rotate synchronously. The inner rod 4 is coaxially inserted into the hollow cavity of the rotating rod 2 and can slide back and forth along the axis of the rotating rod 2. The fixing block 5 protrudes from the outer wall of the inner rod 4 and passes through the sliding groove on the rotating rod 2. It can slide synchronously with the inner rod 4. By engaging and disengaging with the fixing cavity 6 on the base 1, the circumferential locking and unlocking of the bracket 3 angle can be achieved.

[0025] The included angle between two adjacent fixed blocks 5 is 60°. After the bracket 3 is unfolded, the included angle between it and the base 1 is 60°. When the bracket 3 is unfolded or retracted, the rotating rod 2 rotates synchronously with the bracket 3. The rotating rod 2 forms a circumferential limit with the fixed block 5 through the sliding groove on the side wall, thereby driving the inner rod 4 and the fixed block 5 to rotate synchronously as a whole.

[0026] Since the fixing blocks 5 are evenly distributed in a 60° circumferential direction, and the fixing cavity 6 is a hexagonal inner groove structure with the same 60° division angle, when the bracket 3 rotates to the unfolded position at a 60° angle with the base 1, all the fixing blocks 5 are exactly aligned with each groove of the fixing cavity 6. At this time, axially pushing the inner rod 4 can make the fixing blocks 5 smoothly embedded in the fixing cavity 6, achieving circumferential locking, preventing the bracket 3 from deflecting at an angle, and ensuring a stable and reliable support state.

[0027] The base 1 has a fixed cavity 6 and a sliding cavity 7 corresponding to the fixed block 5. The fixed cavity 6 and the sliding cavity 7 are connected. The rotating rod 2 has a sliding groove corresponding to the fixed block 5. The fixed cavity 6 is a hexagonal structure corresponding to the fixed block 5. The bracket 3 is threaded with a fixing bolt for circumferentially fixing the inner rod 4.

[0028] Please refer to the instruction manual for details. Figure 3 The sliding cavity 7 is a circular cavity that allows the inner rod 4 and the fixing block 5 to rotate freely in the circumferential direction. The fixing cavity 6 is a hexagonal limiting cavity. When the fixing block 5 slides into the fixing cavity 6 with the inner rod 4, the hexagonal inner wall structure can restrict the circumferential rotation of the fixing block 5, thereby locking the support angle between the rotating rod 2 and the bracket 3. After the fixing bolt is tightened, it can penetrate the inner rod 4, preventing the inner rod 4 from axially moving under external force, and further ensuring the structural reliability of the bracket 3 in the unfolded state.

[0029] An operating table 8 is fixedly installed between the two brackets 3. The lower end of the operating table 8 has a relief groove corresponding to the base 1. When the brackets 3 are folded down, the relief groove can accommodate the protruding structure of the base 1, ensuring that the whole machine fits tightly after folding and compressing the storage volume to the maximum extent.

[0030] The armrest 9 is hinged to the operating table 8 and can be flipped up and down around the hinge axis to achieve upright gripping in use and downward folding in storage.

[0031] An installation block 10 is fixedly installed at the lower end of the handrail 9. A guide rod 11 is fixedly installed inside the handrail 9. A slider 12 is slidably sleeved on the guide rod 11. A locking block 14 for fixing the position of the handrail 9 is fixedly installed on one side of the slider 12. A spring 13 for resetting the slider 12 is sleeved on the guide rod 11. A locking bolt for fixing the slider 12 is threadedly connected to the handrail 9.

[0032] Please refer to the instruction manual for details. Figure 4 The guide rod 11 is arranged along the length of the handrail 9 to provide a stable linear sliding guide for the slider 12; the spring 13 is in a pre-compressed state under normal conditions, which can push the slider 12 to drive the locking block 14 to extend outward and realize the position locking; after loosening the locking bolt, the slider 12 can be pushed to compress the spring 13, which will drive the locking block 14 to retract inward and release the position locking of the handrail.

[0033] The base 1 has storage racks 15 fixedly installed on both sides for storing the handrails 9. The storage racks 15 have storage slots corresponding to the handrails 9. The storage slots have placement slots corresponding to the mounting blocks 10. The inner wall of the placement slots and the side wall of the operating table 8 have locking slots corresponding to the locking blocks 14.

[0034] Please refer to the instruction manual for details. Figure 5 When the armrest 9 is folded down for storage, it is fully embedded in the storage slot to achieve lateral positioning, and the mounting block 10 is embedded in the placement slot to complete the longitudinal positioning. The locking block 14 is engaged in the locking slot on the inner wall of the placement slot under the elastic force of the spring 13, which can fix the armrest 9 on the storage rack 15 to prevent it from shaking and loosening during transportation or movement. When the armrest 9 is used upright, the locking block 14 is engaged in the locking slot on the side wall of the operating table 8 to ensure that the armrest 9 is structurally stable when held and does not deflect when bearing the user's leaning force.

[0035] The treadmill is equipped with an intelligent control system; please refer to the instruction manual for details. Figure 6 The control system includes a motor, a motor drive system, a main control unit, a sensor detection module, a communication module, and a human-machine interaction module.

[0036] The motor is built into the base 1 and is connected to the running belt through a transmission mechanism consisting of transmission rollers and transmission belts, providing stable power output for the running belt operation; the motor drive system is electrically connected to the motor and serves as the execution end of power control, receiving instructions from the main control unit and precisely driving the motor to operate at the specified speed and direction.

[0037] The motor drive system includes a motor drive circuit and a forward / reverse control unit. The forward / reverse control unit controls the motor to rotate forward or backward according to the steering control signal output by the main control unit, thereby achieving smooth forward and reverse operation of the running belt and adapting to different motion mode requirements.

[0038] The sensing and detection module includes a heart rate sensor, a cadence sensor, a speed sensor, an emergency stop switch, and a limit sensor; The heart rate sensor is integrated into the grip area of ​​the armrest 9, allowing users to collect heart rate data in real time by holding the armrest 9. A cadence sensor is installed under the treadmill to detect the frequency of the user's footsteps by pressure sensing or photoelectric signals. The speed sensor is connected to the motor shaft or the driven roller shaft of the running belt to monitor the actual running speed of the running belt in real time. The emergency stop switch is located in a prominent position on the control panel. Pressing it in an emergency will trigger an immediate shutdown. Limit sensors are installed at both ends of the treadmill to detect the boundary of the running belt in reciprocating motion mode, preventing the running belt from running beyond its travel range.

[0039] The communication module includes a wireless communication unit that supports multiple wireless connection methods such as Wi-Fi and Bluetooth, enabling cloud uploading of sports data, interconnection with mobile devices, and data transmission of remote upgrade packages.

[0040] The human-computer interaction module is integrated on the front of the control panel 8, including a high-definition display screen and physical operation buttons. It can display motion data, mode options and parameter settings in real time, allowing users to intuitively complete mode selection and parameter adjustment.

[0041] The main control unit is the core computing and control carrier of the control system. It stores a complete control program. When the control program is running, it controls the treadmill to execute forward running mode, reverse walking mode, and reciprocating motion mode, and performs OTA remote upgrades through the communication module.

[0042] In reverse walking mode, the main control unit automatically sets the maximum speed limit to prevent the running belt from moving too fast and causing the user to lose balance. The treadmill also includes a sensor on the handrail 9 to detect whether the user's hands are holding the handrail 9. The main control unit refuses to start the machine if the sensor does not detect that the hands are holding the handrail, thus avoiding the risk of losing control when walking backwards from the start-up stage.

[0043] During operation, the main control unit judges the stability of the user's gait based on the gait frequency data detected by the gait frequency sensor. When the gait frequency data shows abnormal fluctuations or interruptions, it is determined that the user's gait is unstable. The main control unit controls the motor to slow down and stop smoothly to prevent the user from falling and getting injured.

[0044] For details on reciprocating motion mode, please refer to the instruction manual appendix. Figure 8 The main control unit controls the running belt to automatically move forward and backward within a preset range based on the user-set reciprocating distance, number of reciprocations, movement speed, and reversing buffer time.

[0045] When reaching the boundary of the interval, the control motor completes the entire process of smooth deceleration, reversal and acceleration within the reversal buffer time, avoiding the impact force generated by instantaneous reversal from causing discomfort to the user's knee joint; the system automatically accumulates the number of reciprocations, and automatically decelerates and stops when the accumulated number of reciprocations reaches the set number of reciprocations, and issues a prompt sound through the human-computer interaction module to inform the user that the exercise has ended.

[0046] The main control unit compares the heart rate data detected by the heart rate sensor with the preset safety threshold in real time. When the heart rate exceeds the safety threshold, the running belt speed is automatically reduced. If the heart rate continues to exceed the threshold, the motor is controlled to stop running to avoid cardiovascular risks caused by excessive exercise intensity.

[0047] Meanwhile, the main control unit automatically fine-tunes the speed of the running belt based on the cadence data detected by the cadence sensor, so that the speed of the running belt dynamically matches the user's cadence, improving gait coordination and exercise comfort.

[0048] For detailed OTA remote upgrade procedures, please refer to the attached instruction manual. Figure 9 The main control unit connects to the cloud server via a communication module to automatically detect whether there is a new firmware version or algorithm package. If a new version is detected, the upgrade package will be downloaded in the background after the user confirms the upgrade, and the integrity data of the downloaded upgrade package will be verified. After successful verification, pause the treadmill exercise function and enter upgrade mode to perform firmware flashing; If a power outage or burning error occurs during the upgrade process, the system will automatically roll back to the previous stable version, ensuring that the device can be used normally and completing the function iteration and algorithm optimization without returning it to the factory.

[0049] The functional principle of this invention can be explained through the following operational methods: When the treadmill needs to be stored away; Loosen the locking bolt on the handrail 9, push the slider 12 to slide along the guide rod 11, compress the spring 13 and drive the locking block 14 out of the locking groove on the side wall of the operating table 8, and release the position lock between the handrail 9 and the operating table 8; Rotate the armrest 9 downwards around the hinge point and align it with the storage racks 15 on both sides of the base 1; Loosen the fixing bolts on the bracket 3, pull the inner rod 4 to one side of the base 1, and move the fixing block 5 on the inner rod 4 from the fixing cavity 6 to the sliding cavity 7, thereby releasing the circumferential lock between the rotating rod 2 and the base 1; Rotate the bracket 3 downwards, causing the rotating rod 2 to rotate synchronously, so that the bracket 3 can be folded down as a whole; After the bracket 3 is folded into place, the armrest 9 is inserted into the storage slot of the storage rack 15, and the mounting block 10 is inserted into the placement slot within the storage slot. Release the slider 12, and the spring 13 will rebound, causing the slider 12 and the locking block 14 to return to their original positions. The locking block 14 will then engage with the locking groove on the inner wall of the placement slot, thus securing the handrail 9 and the storage rack 15 and enabling the treadmill to be folded and stored as a whole. When the control program runs the treadmill; Step S1: System initialization, the main control unit performs self-tests on the motor drive system, sensor detection module and communication module; Step S2: Receive the user's selected exercise mode through the human-computer interaction module. The exercise mode includes forward running mode, reverse walking mode, and reciprocating exercise mode. Step S3: Receive user-defined motion parameters, including at least one of speed, time, and distance. In reciprocating motion mode, these parameters also include reciprocating distance, number of reciprocations, and reversing buffer time. Step S4: Based on the selected motion mode and the set motion parameters, the main control unit outputs corresponding steering control signals and speed control signals to the motor drive system to control the running belt to run in the predetermined direction and speed; Step S5: During the running belt operation, the sensor detection module collects the user's heart rate data, cadence data, and running belt speed data in real time, and transmits the collected data to the main control unit. Step S6: The main control unit processes the received data and determines whether the heart rate data exceeds the preset safety threshold. If it does, it automatically reduces the running belt speed or controls the motor to stop running. It also automatically fine-tunes the running belt speed based on the cadence data to match the user's cadence. Step S7: In reciprocating motion mode, the main control unit controls the running belt to automatically move forward and backward within a preset range according to the set reciprocating distance and reversing buffer time. When it reaches the boundary of the range, it controls the motor to smoothly reverse within the reversing buffer time and accumulates the number of reciprocating motions. Step S8: After the exercise ends, the main control unit saves the exercise data and uploads it to the cloud server via the communication module, or stores it in the local storage device; Step S9: When the treadmill is in standby or idle state, the main control unit connects to the server through the communication module to check if there is a new version of firmware or algorithm package. If so, the OTA upgrade process is executed.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A two-way intelligent treadmill, comprising a base (1) with a running belt and a control system, characterized in that, The base (1) is provided with two rotating storage brackets (3), and the brackets (3) are movably provided with handrails (9) for easy storage and for users to hold. Storage racks (15) for storing handrails (9) are fixedly installed on both sides of the base (1). The control system includes: a motor, a motor drive system, a main control unit, a sensor detection module, a communication module, and a human-machine interaction module; The motor is connected to the running belt drive, the motor drive system is electrically connected to the motor, and the main control unit is electrically connected to the motor drive system, the sensing and detection module, the communication module, and the human-machine interaction module respectively. The motor drive system includes a motor drive circuit and a forward / reverse control unit. The forward / reverse control unit controls the motor to rotate forward or in reverse according to the steering control signal output by the main control unit. The sensing and detection module includes a heart rate sensor, a step frequency sensor, a speed sensor, an emergency stop switch, and a limit sensor. The communication module includes a wireless communication unit; The main control unit stores a control program. When the control program is run, it controls the treadmill to perform forward running mode, reverse walking mode, and reciprocating motion mode, and performs OTA remote upgrades through the communication module.

2. The bidirectional intelligent treadmill according to claim 1, characterized in that, A rotating rod (2) is rotatably mounted on the base (1) and integrally connected with the bracket (3). An inner rod (4) is slidably sleeved inside the rotating rod (2). A fixing block (5) is fixedly mounted on the inner rod (4) and distributed circumferentially to fix the position of the bracket (3).

3. The bidirectional intelligent treadmill according to claim 2, characterized in that, The included angle between two adjacent fixing blocks (5) is 60°, and the included angle between the bracket (3) and the base (1) after the bracket (3) is unfolded is 60°.

4. A bidirectional intelligent treadmill according to claim 3, characterized in that, The base (1) has a fixed cavity (6) and a sliding cavity (7) corresponding to the fixed block (5), the fixed cavity (6) and the sliding cavity (7) are connected, the rotating rod (2) has a sliding groove corresponding to the fixed block (5), the fixed cavity (6) is a hexagonal structure corresponding to the fixed block (5), and the bracket (3) is threaded with a fixing bolt for circumferentially fixing the inner rod (4).

5. A bidirectional intelligent treadmill according to claim 4, characterized in that, An operating table (8) is fixedly installed between the two brackets (3). The lower end of the operating table (8) is provided with a clearance groove corresponding to the base (1). The handrail (9) is hinged to the operating table (8). An installation block (10) is fixedly installed at the lower end of the handrail (9). A guide rod (11) is fixedly installed inside the handrail (9). A slider (12) is slidably sleeved on the guide rod (11). A locking block (14) for fixing the position of the handrail (9) is fixedly installed on one side of the slider (12). A spring (13) for resetting the slider (12) is sleeved on the guide rod (11). A locking bolt for fixing the slider (12) is threadedly connected to the handrail (9).

6. A bidirectional intelligent treadmill according to claim 5, characterized in that, The storage rack (15) has a storage slot corresponding to the armrest (9), and the storage slot has a placement slot corresponding to the mounting block (10). The inner wall of the placement slot and the side wall of the operating table (8) have a locking slot corresponding to the locking block (14).

7. A bidirectional intelligent treadmill according to claim 1, characterized in that, In the reverse walking mode, the main control unit automatically sets the maximum speed limit. The treadmill also includes a sensing device installed on the handrail (9) to detect whether the user's hands are holding the handrail (9). The main control unit refuses to start when the sensing device does not detect the hands holding the handrail. During operation, the main control unit determines the stability of the user's gait based on the gait frequency data detected by the gait frequency sensor. When the gait frequency data shows abnormal fluctuations or interruptions, the main control unit controls the motor to decelerate and stop.

8. A bidirectional intelligent treadmill according to claim 7, characterized in that, In the reciprocating motion mode, the main control unit controls the running belt to automatically move forward and backward within a preset range according to the reciprocating distance, number of reciprocations, movement speed and reversing buffer time set by the user. When the belt reaches the boundary of the range, the main control unit controls the motor to smoothly reverse within the reversing buffer time and accumulates the number of reciprocations. When the accumulated number of reciprocations reaches the set number of reciprocations, the machine automatically stops.

9. A bidirectional intelligent treadmill according to claim 8, characterized in that, The main control unit compares the heart rate data detected by the heart rate sensor with a preset safety threshold. When the heart rate exceeds the safety threshold, it automatically reduces the speed of the running belt or controls the motor to stop running. The main control unit automatically fine-tunes the speed of the running belt based on the cadence data detected by the cadence sensor, so that the speed of the running belt matches the user's cadence.

10. A bidirectional intelligent treadmill according to claim 9, characterized in that, The OTA remote upgrade includes: The main control unit connects to the server via the communication module to detect whether a new firmware version or algorithm package exists; if it exists, it downloads the upgrade package and performs data verification on the downloaded upgrade package; if the verification is successful, it performs the upgrade installation; if the upgrade fails, it automatically rolls back to the previous stable version.

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