Large professional treadmill

Abstract

The application discloses a large professional running track, which comprises a base, a running track mechanism, a driving mechanism and an adjusting motor. The running track mechanism comprises a running track frame and a ring-shaped running belt. One end of the running track frame is rotationally connected with a front roller, and the other end of the running track frame is rotationally connected with a rear roller. The ring-shaped running belt is arranged around the front roller and the rear roller. The front roller is rotationally connected with the base. The driving mechanism is fixedly connected with the base and drives the front roller to rotate. The adjusting motor is fixedly connected with the base. The large professional running track has high bearing capacity and can meet the bearing capacity requirement of the running track.

Description

Technical Field

[0001] This invention generally relates to the field of fitness equipment, specifically to the field of treadmills, and particularly to a large professional treadmill. Background Technology

[0002] Using fitness equipment to exercise has become a popular choice for many people. Treadmills are a common piece of fitness equipment in homes and gyms, and they are the simplest type of home fitness equipment available today, making them the best choice for home fitness.

[0003] Compared to home or commercial treadmills, running tracks are larger, heavier, and offer more diverse training scenarios. They can be used for cycling, rollerblading, simulated skiing, and wheelchair training. To meet different training needs, the incline of the running track needs to be adjustable. The incline adjustment range needs to cover both positive and negative angles to simulate different training scenarios. The load-bearing capacity of traditional treadmill incline adjustment mechanisms cannot meet the requirements of running tracks, necessitating a large, professional running track that can meet these load-bearing requirements. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the existing technology, it is desirable to provide a large-scale professional running track with strong load-bearing capacity.

[0005] In a first aspect, the present invention provides a large-scale professional running track, the large-scale professional running track comprising:

[0006] Base;

[0007] A treadmill mechanism includes a treadmill frame and a circular running belt. A front roller is rotatably connected to one end of the treadmill frame, and a rear roller is rotatably connected to the other end of the treadmill frame. The circular running belt surrounds the front roller and the rear roller, and the front roller is rotatably connected to the base.

[0008] A drive mechanism is fixedly connected to the base, and the drive mechanism drives the front roller to rotate;

[0009] An adjustment motor is fixedly connected to the base;

[0010] A first lifting assembly includes a first worm gear mechanism, a first telescopic screw, a first fixed base, a first linkage mechanism, and a first support mechanism. The first fixed base is fixedly connected to the base. One end of the first linkage mechanism is rotatably connected to the first telescopic screw, and the other end of the first linkage mechanism is rotatably connected to the first support mechanism. One end of the first support mechanism is rotatably connected to the base, and the other end of the first support mechanism supports the running platform. The first telescopic screw is slidably connected to the first fixed base, and the first worm gear mechanism is connected to the first telescopic screw.

[0011] The second lifting assembly includes a second worm gear mechanism, a second telescopic screw, a second fixed base, a second linkage mechanism, and a second support mechanism. The second fixed base is fixedly connected to the base. One end of the second linkage mechanism is rotatably connected to the second telescopic screw, and the other end is rotatably connected to the second support mechanism. One end of the second support mechanism is rotatably connected to the base, and the other end supports the running platform. The second telescopic screw is slidably connected to the second fixed base, and the second worm gear mechanism is connected to the second telescopic screw.

[0012] The first lifting assembly and the second lifting assembly are symmetrically arranged. The adjusting motor drives the first worm gear mechanism and the second worm gear mechanism to move synchronously, thereby driving the first telescopic screw and the second telescopic screw to extend and retract synchronously.

[0013] According to the technical solution provided in the embodiments of this application, the first worm gear mechanism drives the first telescopic screw to extend and retract. The first telescopic screw drives the first support mechanism to move through the first linkage mechanism. The second worm gear mechanism drives the second telescopic screw to extend and retract. The second telescopic screw drives the second support mechanism to move through the second linkage mechanism. The adjusting motor drives the first worm gear mechanism and the second worm gear mechanism to move synchronously, that is, to drive the first telescopic screw and the second telescopic screw to extend and retract synchronously, that is, to drive the first support mechanism and the second support mechanism to rotate synchronously. Under the action of its own gravity, the running platform mechanism will press against the first support mechanism and the second support mechanism and rotate, thereby adjusting the slope of the running platform mechanism. It has a strong load-bearing capacity and can meet the load-bearing capacity requirements of the running platform. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 A front view of the running track frame of a large professional running track according to an embodiment of the present invention, at the position of maximum inclination angle;

[0016] Figure 2 The right view of the treadmill frame of the large professional treadmill in an embodiment of the present invention, at the position of maximum inclination angle;

[0017] Figure 3 A perspective view of the running platform frame of a large professional running track according to an embodiment of the present invention, with the running platform frame at the position of maximum inclination angle;

[0018] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0019] Figure 5A perspective view of the running track frame of a large professional running track according to an embodiment of the present invention, with the running track frame at its maximum tilt angle;

[0020] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0021] Figure 7 A perspective view of the running track frame of a large professional running track according to an embodiment of the present invention, with the running track frame at its maximum tilt angle;

[0022] Figure 8 for Figure 7 A magnified view of a section at point C;

[0023] Figure 9 A perspective view of the running track frame of a large professional running track according to an embodiment of the present invention, with the running track frame at its maximum tilt angle;

[0024] Figure 10 for Figure 9 A magnified view of a section at point D;

[0025] Figure 11 This is a schematic diagram of the structure of a large professional treadmill without the treadmill frame, according to an embodiment of the present invention.

[0026] Figure 12 for Figure 11 A magnified view of a section at point E in the middle;

[0027] Figure 13 This is a schematic diagram of the structure of a large professional treadmill without the treadmill frame, according to an embodiment of the present invention.

[0028] Figure 14 for Figure 13 A magnified view of a section at point F in the middle;

[0029] Figure 15 This is a schematic diagram of the structure of a large professional treadmill in a horizontal position, according to an embodiment of the present invention.

[0030] Figure 16 This is a schematic diagram of the structure of a large professional treadmill frame in the position of minimum inclination angle, according to an embodiment of the present invention. Detailed Implementation

[0031] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Please refer to Figures 1-16 The present invention discloses a large professional running track, comprising: a base 100; a running track mechanism 230, which includes a running track frame 200 and an annular running belt 231, wherein a front roller 232 is rotatably connected to one end of the running track frame 200, and a rear roller 233 is rotatably connected to the other end of the running track frame 200, the annular running belt 231 surrounds the front roller 232 and the rear roller 233, and the front roller 232 is rotatably connected to the base 100; a drive mechanism fixedly connected to the base 100, the drive mechanism driving the front roller 232 to rotate; and an adjusting motor 300 fixedly connected to the base 100. Base 100; First lifting assembly 400, which includes a first worm gear mechanism 410, a first telescopic screw 420, a first fixed seat 430, a first linkage mechanism 440, and a first support mechanism 450. The first fixed seat 430 is fixedly connected to the base 100. One end of the first linkage mechanism 440 is rotatably connected to the first telescopic screw 420, and the other end of the first linkage mechanism 440 is rotatably connected to the first support mechanism 450. One end of the first support mechanism 450 is rotatably connected to the base 100, and the other end of the first support mechanism 450 supports the running platform 20. 0. The first telescopic screw 420 is slidably connected to the first fixed seat 430, and the first worm gear mechanism 410 is connected to the first telescopic screw 420; and the second lifting assembly 500 includes the second worm gear mechanism 510, the second telescopic screw 520, the second fixed seat 530, the second linkage mechanism 540, and the second support mechanism 550. The second fixed seat 530 is fixedly connected to the base 100, one end of the second linkage mechanism 540 is rotatably connected to the second telescopic screw 520, and the other end of the second linkage mechanism 540 is rotatably connected to the second support mechanism 550. The second support mechanism 550 is rotatably connected to the base 100 at one end and supports the running platform 200 at the other end. The second telescopic screw 520 is slidably connected to the second fixed seat 530. The second worm gear mechanism 510 is connected to the second telescopic screw 520. The first lifting assembly 400 and the second lifting assembly 500 are symmetrically arranged. The adjusting motor 300 drives the first worm gear mechanism 410 and the second worm gear mechanism 510 to move synchronously, thereby driving the first telescopic screw 420 and the second telescopic screw 520 to extend and retract synchronously.

[0034] In an embodiment of the invention, a base supports the entire treadmill. A front roller and a rear roller are rotatably connected to the treadmill frame, and a circular running belt surrounds the front and rear rollers. A drive mechanism drives the front roller to rotate, which in turn moves the circular running belt. Support seats can be provided on the base, with one end of the front roller rotatably connected to one support seat and the other end rotatably connected to another support seat, thus achieving a rotatable connection between one end of the treadmill frame and the base. By providing support seats, a space is formed between the treadmill frame and the base to accommodate the adjusting motor, the first lifting assembly, and the second lifting assembly. During actual installation, to facilitate user training, a pit needs to be dug at the installation location, and the base, the first lifting assembly, and the second lifting assembly are placed in the pit, making the treadmill frame slightly higher than the ground, facilitating user access to the training space. Alternatively, but not limited to, multiple support feet 180 can be provided on the side of the base facing away from the treadmill frame. The position of the support feet relative to the base can be adjusted. During installation and adjustment of the treadmill, adjusting the support feet keeps the base level, reducing the requirement for the flatness of the pit bottom.

[0035] The base includes a first horizontal tube 191, a second horizontal tube 192, a first vertical tube 193, and a second vertical tube 194. The first horizontal tube and the second horizontal tube are parallel to each other, as are the first and second vertical tubes. The first and second horizontal tubes are welded and fixed to the first vertical tube, ensuring the strength of the base frame. The base frame also includes a third horizontal tube located between the first and second horizontal tubes. The first and second vertical tubes are welded and fixed to the third horizontal tube, further enhancing the strength of the base frame. The adjusting motor is detachably and fixedly connected to the third horizontal tube, ensuring the reliability of the base's support for the adjusting motor.

[0036] The first lifting assembly includes a first worm gear mechanism, a first telescopic screw, a first fixed base, a first linkage mechanism, and a first support mechanism. The first worm gear mechanism can drive the first telescopic screw to extend and retract relative to the first fixed base. The first telescopic screw is rotatably connected to the first linkage mechanism, the first linkage mechanism is rotatably connected to the first support mechanism, and the first support mechanism is rotatably connected to the base, forming a crank-slider mechanism. The extension and retraction of the first fixed base drives the first support mechanism to rotate. During the rotation of the first support mechanism, the running platform frame, due to its own weight, will press against the first support mechanism, and the running platform frame will also rotate with the first support mechanism. During the rotation of the running platform frame, the first support mechanism always provides support to the running platform frame, ensuring the stability, reliability, and load-bearing capacity of the running platform frame. Of course, during the slope adjustment of the running platform, the included angle between the first linkage mechanism and the first support mechanism is less than 180° to avoid the situation where the first telescopic screw cannot pull the first support mechanism to rotate, thus ensuring the reliability of the slope adjustment mechanism. When the first support mechanism supports the running platform, the running platform applies pressure to the first support mechanism. At this time, the first linkage mechanism bears tension along its length, and the first telescopic screw bears tension along its length, which further ensures the stability and reliability of the first lifting assembly supporting the running platform and ensures the load-bearing capacity of the running platform.

[0037] The second lifting assembly includes a second worm gear mechanism, a second telescopic screw, a second fixed base, a second linkage mechanism, and a second support mechanism. The second worm gear mechanism drives the second telescopic screw to extend and retract relative to the second fixed base. The second telescopic screw is rotatably connected to the second linkage mechanism, which is rotatably connected to the second support mechanism. The second support mechanism is rotatably connected to the base, forming a crank-slider mechanism. The extension and retraction of the second fixed base drives the second support mechanism to rotate. During the rotation of the second support mechanism, the running platform, due to its own weight, will press against the second support mechanism, and the running platform will also rotate with the second support mechanism. During the rotation of the running platform, the second support mechanism always provides support to the running platform, ensuring the stability, reliability, and load-bearing capacity of the running platform. Of course, during the slope adjustment of the running platform, the angle between the second linkage mechanism and the second support mechanism is less than 180° to avoid the second telescopic screw being unable to pull the second support mechanism to rotate, thus ensuring the reliability of the slope adjustment mechanism. When the second support mechanism supports the running platform, the running platform applies pressure to the second support mechanism. At this time, the second linkage mechanism bears tension along its length, and the second telescopic screw bears tension along its length, which further ensures the stability and reliability of the second lifting component supporting the running platform and ensures the load-bearing capacity of the running platform.

[0038] The regulating motor drives the first and second worm gear mechanisms to operate synchronously via a dual-axis output steering gear 310. Specifically, the first worm gear mechanism includes a first worm and a first worm wheel, which are connected by a thread. Rotation of the first worm drives the first worm wheel to rotate. Both the first worm and the first worm are rotatably connected to a first fixed base. A first telescopic screw passes through the first worm and is connected to it by a thread. Rotation of the first worm drives the first worm wheel to rotate, and the rotation of the first worm wheel drives the first telescopic screw to extend and retract relative to the first fixed base. The second worm gear mechanism includes a second worm and a second worm wheel, which are connected by a thread. Rotation of the second worm drives the second worm wheel to rotate. Both the second worm and the second worm are rotatably connected to a second fixed base. A second telescopic screw passes through the second worm and is connected to it by a thread. Rotation of the second worm drives the second worm wheel to rotate, and the rotation of the second worm wheel drives the second telescopic screw to extend and retract relative to the second fixed base. The worm gear mechanism has advantages such as high stability, resistance to vibration or wobbling, strong load-bearing capacity, and high precision. It meets the high load-bearing capacity requirements of the running track. During slope adjustment, the running track is less prone to shaking or swaying, resulting in smoother adjustment and more precise slope adjustment. The adjustment motor drives the first and second worm gears to rotate synchronously via a dual-axis output steering gear 310, ensuring the synchronicity of the rotation of the first and second support mechanisms. Furthermore, the symmetrical arrangement of the first and second lifting components allows the first and second support mechanisms to simultaneously and synchronously support the running track during slope adjustment, ensuring the stability of the slope adjustment.

[0039] Furthermore, the drive mechanism includes a first drive motor 241 and a second drive motor 242, which synchronously drive the front roller 232 to rotate.

[0040] In embodiments of the present invention, the drive motor includes a first drive motor and a second drive motor. The first drive motor and the second drive motor synchronously drive the front roller to rotate, enabling the front roller to achieve a faster rotational speed. Alternatively, but not limited to, the first drive motor can drive the front roller to rotate via a first synchronous belt 243, and the second drive motor can drive the front roller to rotate via a second synchronous belt 244. The transmission via the first and second synchronous belts makes the transmission more precise, prevents slippage, has high transmission efficiency, and is easy to maintain.

[0041] Furthermore, a first rotating shaft 2321 is fixedly connected to one end of the front roller 232, and a second rotating shaft 2322 is fixedly connected to the other end of the front roller 232. The front roller 232, the first rotating shaft 2321, and the second rotating shaft 2322 are coaxially arranged. The first rotating shaft 2321 is rotatably connected to the running platform 200 through a first bearing, and the second rotating shaft 2322 is rotatably connected to the running platform 200 through a second bearing. The first bearing and the second bearing are located outside the front roller 232.

[0042] In an embodiment of the present invention, the first rotating shaft is rotatably connected to the running frame via a first bearing, and the second rotating shaft is rotatably connected to the running frame via a second bearing, ensuring the stability of the rotatable connection between the front roller and the running frame. The first and second bearings are located outside the front roller, facilitating maintenance and allowing the use of larger-sized first and second bearings, thus ensuring their load-bearing capacity.

[0043] Furthermore, the first rotating shaft 2321 is rotatably connected to the base 100 via the third bearing, and the second rotating shaft 2322 is rotatably connected to the base 100 via the fourth bearing. The third and fourth bearings are located outside the front roller 232.

[0044] In an embodiment of the invention, the first rotating shaft is rotatably connected to the base via a third bearing, and the second rotating shaft is rotatably connected to the base via a fourth bearing, ensuring the stability of the rotatable connection between the front roller and the base. The third and fourth bearings are located outside the front roller, facilitating maintenance and allowing the use of larger-sized third and fourth bearings, thus ensuring their load-bearing capacity.

[0045] Furthermore, a hollow shaft encoder 2323 is sleeved on the second rotating shaft 2322, and the hollow shaft encoder 2323 is detachably fixedly connected to the base 100.

[0046] In an embodiment of the invention, a hollow shaft encoder is sleeved on the second rotating shaft. The hollow shaft encoder is used to acquire the rotational speed and number of revolutions of the front roller. The hollow shaft encoder can be electrically connected to a control console, displaying the training speed and training distance on the console. Compared to calculating the training speed based on the motor's rotational speed and then the speed ratio, directly acquiring the rotational speed information of the front roller through the hollow shaft encoder is more accurate. The hollow shaft encoder is detachably fixed to the base. The hollow shaft encoder can be fixed to a mounting plate, which is detachably fixed to the base. The mounting plate can be made of spring steel to facilitate the installation of the hollow shaft encoder.

[0047] Furthermore, a suspension rod 234 is fixedly connected to the side of the running platform 200 facing away from the base 100. The suspension rod 234 is connected to a hook 235, which is connected to a trigger. The trigger is electrically connected to the drive mechanism.

[0048] In an embodiment of the invention, the boom is located above the circular running belt and is connected to a hook. During training, a safety rope can be attached to the hook. If the user falls during training, the safety rope pulls the hook, triggering a trigger mechanism. The drive mechanism receives the signal from the trigger and immediately stops operating, ensuring the user's training safety.

[0049] Furthermore, the first support mechanism 450 includes a first support tube 451 and a first connector 452. The first connector 452 is fixedly connected to the side of the first support tube 451 facing the first telescopic screw 420, and the first connector 452 is rotatably connected to the first linkage mechanism 440. The second support mechanism 550 includes a second support tube 551 and a second connector 552. The second connector 552 is fixedly connected to the side of the second support tube 551 facing the second telescopic screw 520, and the second connector 552 is rotatably connected to the second linkage mechanism 540.

[0050] In an embodiment of the present invention, the first support tube and the first connecting member are welded together, ensuring the reliability of the connection between the first support tube and the first connecting member. The first connecting member is rotatably connected to the first linkage mechanism, and by providing the first connecting member, it is easy to rotatably connect the first support mechanism and the first linkage mechanism. The side of the first connecting member facing the running board is the first support surface. When the running board is in the position of minimum inclination angle, the first support surface will contact the running board, further improving the stability of the running board when it is in the position of minimum inclination angle.

[0051] The second support tube and the second connector are welded together, ensuring the reliability of their connection. The second connector is rotatably connected to the second linkage mechanism, facilitating this connection. The side of the second connector facing the running board is the second support surface. When the running board is at its minimum tilt angle, the second support surface contacts the running board, further improving its stability at this position.

[0052] Furthermore, the first connecting member 452 includes a first U-shaped plate 4521, which includes a first base plate, a first folded edge, and a second folded edge. The first folded edge and the second folded edge are respectively fixedly connected to both sides of the first support tube 451. The first base plate abuts against the side of the first support tube 451 facing the first telescopic screw 420. A first connecting plate 4522 and a second connecting plate 4523, which are spaced apart and arranged opposite to each other, are fixedly connected to the side of the first U-shaped plate 4521 facing away from the first support tube 451. The first connecting plate 4522 and the second connecting plate 4523 rotate with the first linkage mechanism 440 respectively. The second connecting member 552 includes a second U-shaped plate 5521, which includes a second base plate, a third folded edge, and a fourth folded edge. The third folded edge and the fourth folded edge are fixedly connected to both sides of the second support tube 551, respectively. The second base plate abuts against the side of the second support tube 551 facing the second telescopic screw 520. The side of the second U-shaped plate 5521 facing away from the second support tube 551 is fixedly connected to a third connecting plate 5522 and a fourth connecting plate 5523 that are spaced apart and arranged opposite to each other. The third connecting plate 5522 and the fourth connecting plate 5523 are rotatably connected to the second linkage mechanism 540, respectively.

[0053] In an embodiment of the present invention, the first connecting member includes a first U-shaped plate, which includes a first base plate, a first folded edge, and a second folded edge. The first base plate, the first folded edge, and the second folded edge are respectively fixedly connected to the first support tube, ensuring the connection strength between the first connecting member and the first support tube. The first folded edge and the second folded edge are formed by bending the first base plate, which facilitates processing. The first folded edge and the second folded edge are respectively fixedly connected to both sides of the first support tube, which increases the contact area between the first folded edge and the second folded edge and the first support tube, ensuring the connection strength between the first U-shaped plate and the first support tube. The first U-shaped plate is fixedly connected to a first connecting plate and a second connecting plate, which are respectively rotatably connected to a first linkage mechanism, ensuring the reliability of the rotatable connection between the first linkage mechanism and the first connecting member. At the same time, when the first support mechanism supports the running platform, the first linkage mechanism transmits tension to the first U-shaped plate through the first connecting plate and the second connecting plate. By setting the first connecting plate and the second connecting plate, the force on the first U-shaped plate is more balanced.

[0054] The second connecting component includes a second U-shaped plate, which comprises a second base plate, a third folded edge, and a fourth folded edge. The second base plate, third folded edge, and fourth folded edge are fixedly connected to the second support tube, ensuring the connection strength between the second connecting component and the second support tube. The third and fourth folded edges are formed by bending the second base plate, facilitating processing. The third and fourth folded edges are fixedly connected to both sides of the second support tube, increasing the contact area between them and the second support tube, thus ensuring the connection strength between the second U-shaped plate and the second support tube. The second U-shaped plate is fixedly connected to a third connecting plate and a fourth connecting plate, which are rotatably connected to the second linkage mechanism, ensuring the reliability of the rotatable connection between the second linkage mechanism and the second connecting component. Simultaneously, when the second support mechanism supports the running platform, the second linkage mechanism transmits tension to the second U-shaped plate through the third and fourth connecting plates. The inclusion of the third and fourth connecting plates ensures a more balanced force distribution on the second U-shaped plate.

[0055] Furthermore, the first linkage mechanism 440 includes a first sub-link 441 and a second sub-link 442, which are connected by a first synchronization plate 443. A first reinforcing plate 4522a is detachably fixedly connected to the side of the first connecting plate 4522 facing away from the second connecting plate 4523. The first reinforcing plate 4522a and the first connecting plate 4522 are respectively fixedly connected to a first rotating shaft 4522b. The first sub-link 441 is rotatably connected to the first rotating shaft 4522b. The sub-link 441 is located between the first reinforcing plate 4522a and the first connecting plate 4522. The second connecting plate 4523 is detachably fixedly connected to the second reinforcing plate 4523a on the side opposite to the first connecting plate 4522. The second reinforcing plate 4523a and the second connecting plate 4523 are respectively fixedly connected to the second rotating shaft 4523b. The second sub-link 442 is rotatably connected to the second rotating shaft 4523b. The second sub-link 442 is located between the second reinforcing plate 4523a and the second connecting plate 4523.

[0056] In an embodiment of the present invention, the first linkage mechanism includes a first sub-link and a second sub-link, which are connected by a first synchronous plate. The first synchronous plate ensures the strength of the first and second sub-links and enables them to move synchronously. The first and second sub-links are rotatably connected to a first U-shaped plate, ensuring balanced force on the first U-shaped plate. The first and second sub-links are also rotatably connected to a first telescopic screw, ensuring balanced force on the first telescopic screw. A first reinforcing plate is detachably fixed to the side of the first connecting plate facing away from the second connecting plate. The first reinforcing plate and the first connecting plate are fixedly connected to a first rotating shaft, and the first sub-link is rotatably connected to the first rotating shaft, realizing a rotatable connection between the first sub-link and the first connecting plate. The first sub-link is located between the first reinforcing plate and the first connecting plate. When the first support mechanism supports the running platform, the first sub-link applies a tensile force to the first rotating shaft, ensuring balanced force on both ends of the first rotating shaft. The first reinforcing plate can be detachably fixed to the first connecting plate by multiple bolts, which facilitates the assembly of the first rotating shaft and the first sub-connecting rod.

[0057] A second reinforcing plate is detachably fixed to the side of the second connecting plate facing away from the first connecting plate. The second reinforcing plate and the second connecting plate are respectively fixedly connected to the second rotating shaft. The second sub-connecting rod is rotatably connected to the second rotating shaft, achieving a rotatable connection between the second sub-connecting rod and the second connecting plate. The second sub-connecting rod is located between the second reinforcing plate and the second connecting plate. When the first support mechanism supports the running platform, the second sub-connecting rod applies a tensile force to the second rotating shaft, ensuring balanced force distribution at both ends of the second rotating shaft. The second reinforcing plate can be detachably fixed to the second connecting plate using multiple bolts, facilitating the assembly of the second rotating shaft and the second sub-connecting rod.

[0058] Furthermore, a first partition block 4522c is provided between the first connecting plate 4522 and the first reinforcing plate 4522a, and a second partition block 4523c is provided between the second connecting plate 4523 and the second reinforcing plate 4523a.

[0059] In an embodiment of the present invention, the first partition block maintains a distance between the first connecting plate and the first reinforcing plate sufficient for the transmission of the first sub-link, ensuring smooth rotational connection between the first sub-link and the first connecting plate. The second partition block maintains a distance between the second connecting plate and the second reinforcing plate sufficient for the transmission of the second sub-link, ensuring smooth rotational connection between the second sub-link and the second connecting plate.

[0060] Furthermore, the second linkage mechanism 540 includes a third sub-link 541 and a fourth sub-link 542, which are connected by a second synchronization plate 543. A third reinforcing plate 5522a is detachably fixedly connected to the side of the third connecting plate 5522 facing away from the fourth connecting plate 5523. The third reinforcing plate 5522a and the third connecting plate 5522 are respectively fixedly connected to the third rotating shaft 5522b. The third sub-link 541 is rotatably connected to the third rotating shaft 5522b. The sub-link 541 is located between the third reinforcing plate 5522a and the third connecting plate 5522. The fourth connecting plate 5523 is detachably fixedly connected to the fourth reinforcing plate 5523a on the side opposite to the third connecting plate 5522. The fourth reinforcing plate 5523a and the fourth connecting plate 5523 are respectively fixedly connected to the fourth rotating shaft 5523b. The fourth sub-link 542 is rotatably connected to the fourth rotating shaft 5523b. The fourth sub-link 542 is located between the fourth reinforcing plate 5523a and the fourth connecting plate 5523.

[0061] In an embodiment of the present invention, the second linkage mechanism includes a third sub-link and a fourth sub-link, which are connected by a second synchronous plate. The second synchronous plate ensures the strength of the third and fourth sub-links and enables them to move synchronously. The third and fourth sub-links are rotatably connected to the second U-shaped plate, ensuring balanced force on the second U-shaped plate. The third and fourth sub-links are also rotatably connected to the second telescopic screw, ensuring balanced force on the second telescopic screw. A third reinforcing plate is detachably fixed to the side of the third connecting plate facing away from the fourth connecting plate. The third reinforcing plate and the third connecting plate are fixedly connected to the third rotating shaft, and the third sub-link is rotatably connected to the third rotating shaft, realizing a rotatable connection between the third sub-link and the third connecting plate. The third sub-link is located between the third reinforcing plate and the third connecting plate. When the second support mechanism supports the running platform, the third sub-link applies a tensile force to the third rotating shaft, ensuring balanced force on both ends of the third rotating shaft. The third reinforcing plate can be detachably fixed to the third connecting plate via multiple bolts, facilitating the assembly of the third rotating shaft and the third sub-connecting rod.

[0062] A fourth reinforcing plate is detachably fixed to the side of the fourth connecting plate facing away from the third connecting plate. Both the fourth reinforcing plate and the fourth connecting plate are fixedly connected to the fourth rotating shaft. The fourth sub-connecting rod is rotatably connected to the fourth rotating shaft, achieving a rotatable connection between the fourth sub-connecting rod and the fourth connecting plate. The fourth sub-connecting rod is located between the fourth reinforcing plate and the fourth connecting plate. When the second support mechanism supports the running platform, the fourth sub-connecting rod applies tension to the fourth rotating shaft, ensuring balanced force at both ends of the fourth rotating shaft. The fourth reinforcing plate can be detachably fixed to the fourth connecting plate using multiple bolts, facilitating the assembly of the fourth rotating shaft and the fourth sub-connecting rod.

[0063] Furthermore, a third partition block 5522c is provided between the third connecting plate 5522 and the third reinforcing plate 5522a, and a fourth partition block 5523c is provided between the fourth connecting plate 5523 and the fourth reinforcing plate 5523a.

[0064] In an embodiment of the present invention, the third partition block maintains a distance between the third connecting plate and the third reinforcing plate sufficient for the transmission of the third sub-connecting rod, ensuring smooth rotational connection between the third sub-connecting rod and the third connecting plate. The fourth partition block maintains a distance between the fourth connecting plate and the fourth reinforcing plate sufficient for the transmission of the fourth sub-connecting rod, ensuring smooth rotational connection between the fourth sub-connecting rod and the fourth connecting plate.

[0065] Furthermore, the first support mechanism 450 includes a first support roller 453, a second support roller 4532, and a third support roller 4533 arranged in sequence, and the second support mechanism 550 includes a fourth support roller 553, a fifth support roller 5532, and a sixth support roller 5533 arranged in sequence. During the rotation of the running table 200, the second support roller 4532 and the fifth support roller 5532 are always in contact with the running table 200. When the running table 200 is in the position with the smallest inclination angle, the first support roller 453, the second support roller 4532, the fourth support roller 553, and the fifth support roller 5532 support the running table 200 respectively. When the running table 200 is in the position with the largest inclination angle, the second support roller 4532, the third support roller 4533, the fifth support roller 5532, and the sixth support roller 5533 support the running table 200 respectively.

[0066] In an embodiment of the present invention, the first support roller, the second support roller, and the third support roller are rotatably connected to the first support tube. During the incline adjustment of the running platform, the first, second, and third support rollers can all roll when in contact with the running platform frame, reducing friction between the first support mechanism and the running platform frame, thus making the incline adjustment smoother. The distance between the first, second, and third support rollers and the first linkage mechanism gradually increases, that is, the distance between the first support roller and the first linkage mechanism is less than the distance between the third support roller and the first linkage mechanism. The first support tube is provided with a first opening 4511, and the first, second, and third support rollers are respectively inserted into the first support tube through the first opening 4511. By providing the first opening 4511, it is convenient to assemble the first, second, and third support rollers. Of course, multiple first reinforcing members 4512 can be provided in the first opening 4511. The two ends of the first reinforcing member 4512 are fixedly connected to the first reinforcing tubes to prevent the first opening 4511 from opening during the use of the running platform. The first support roller, the second support roller, and the third support roller are partially exposed from one side of the first support tube, ensuring that the first support roller, the second support roller, and the third support roller can support the running platform frame.

[0067] The fourth, fifth, and sixth support rollers are rotatably connected to the second support tube. During the incline adjustment of the running track, all three rollers roll when in contact with the running track frame, reducing friction between the second support mechanism and the running track frame, thus making the incline adjustment smoother. The distance between the fourth, fifth, and sixth support rollers and the second linkage mechanism gradually increases, meaning the distance between the fourth support roller and the second linkage mechanism is less than the distance between the sixth support roller and the second linkage mechanism. The second support tube has a second opening 5511, through which the fourth, fifth, and sixth support rollers are inserted into the second support tube. The second opening 5511 facilitates the assembly of the fourth, fifth, and sixth support rollers. Of course, multiple second reinforcing members 5512 can be installed in the second opening 5511. The two ends of the second reinforcing member 5512 are fixedly connected to the second reinforcing tubes to prevent the second opening 5511 from opening during the use of the running platform. The fourth, fifth, and sixth support rollers protrude from one side of the second support tube, ensuring that the fourth, fifth, and sixth support rollers can support the running platform frame.

[0068] When the running track is in the position of minimum inclination, that is, when the end of the running track away from the front roller is in the lowest vertical position, the first support roller, the second support roller, the fourth support roller and the fifth support roller support the running track respectively, so that the first support mechanism and the second support mechanism are subjected to balanced forces, ensuring the stability and reliability of the first support mechanism and the second support mechanism in supporting the running track, and ensuring that the running track has a good load-bearing capacity.

[0069] When the running track is at its maximum tilt angle, that is, when the end of the running track furthest from the front roller is at its highest vertical position, the second, third, fifth, and sixth support rollers support the running track respectively, so that the first and second support mechanisms are subjected to balanced forces, ensuring the stability and reliability of the first and second support mechanisms in supporting the running track, and ensuring that the running track has good load-bearing capacity.

[0070] Furthermore, a first guide protrusion 210 is fixedly connected to the side of the running platform 200 facing the first support mechanism 450, and the first support roller 453, the second support roller 4532 and the third support roller 4533 are respectively provided with a first guide groove 4531 that cooperates with the first guide protrusion 210. A second guide protrusion 211 is fixedly connected to the side of the running platform 200 facing the second support mechanism 550, and the fourth support roller 553, the fifth support roller 5532 and the sixth support roller 5533 are respectively provided with a second guide groove 5531 that cooperates with the second guide protrusion 211.

[0071] In embodiments of the present invention, when the first support roller, the second support roller, or the third support roller supports the running platform, the first guide protrusion is placed into the first guide groove to prevent displacement during the support process, thus ensuring the stability of the support mechanism. During running platform incline adjustment, when the first support roller, the second support roller, or the third support roller rolls in conjunction with the running platform, the first guide protrusion is placed into the first guide groove. The cooperation between the first guide protrusion and the first guide groove prevents displacement during rolling, thus ensuring the stability of the running platform incline adjustment.

[0072] When the fourth, fifth, or sixth support roller supports the running platform, the second guide protrusion is positioned within the second guide groove to prevent displacement during the support process, thus ensuring the stability of the running platform. During running platform incline adjustment, when the fourth, fifth, or sixth support roller rolls in conjunction with the running platform, the second guide protrusion is again positioned within the second guide groove. This interaction between the second guide protrusion and the second guide groove prevents displacement during rolling, ensuring the stability of the running platform incline adjustment.

[0073] Furthermore, the base 100 is detachably fixedly connected to a first crossbar 110 and a second crossbar 120. The first crossbar 110 and the second crossbar 120 are parallel. The first crossbar 110 is located below the first support mechanism 450. The portion of the first crossbar 110 located on the movement path of the first support mechanism 450 is provided with a first clearance groove 111. The second crossbar 120 is located below the second support mechanism 550. The portion of the second crossbar 120 located on the movement path of the second support mechanism 550 is provided with a second clearance groove 121.

[0074] In embodiments of the present invention, the first crossbar is located below the first support mechanism, and may be, but is not limited to, rotatably connected to the first support mechanism. The first crossbar is provided with a first clearance groove, and when the running platform is in the position of minimum inclination, the first support mechanism portion is placed into the first clearance groove. By providing the first clearance groove, the first crossbar can be prevented from interfering with the movement of the first support mechanism, and at the same time, it is not necessary to set the distance between the base and the running platform too large, making the structure of the running platform more compact. The second crossbar is located below the second support mechanism, and may be, but is not limited to, rotatably connected to the second support mechanism. The second crossbar is provided with a second clearance groove, and when the running platform is in the position of minimum inclination, the second support mechanism portion is placed into the second clearance groove. By providing the second clearance groove, the second crossbar can be prevented from interfering with the movement of the second support mechanism, and at the same time, it is not necessary to set the distance between the base and the running platform too large, making the structure of the running platform more compact.

[0075] The base is detachably and fixedly connected to a first crossbar and a second crossbar. The first and second crossbars can be detachably and fixedly connected to the base using bolts. When machining the first clearance groove, only the first crossbar needs to be placed into the machining equipment; the entire base does not need to be placed into the machining equipment, facilitating the machining of the first clearance groove. Similarly, when machining the second clearance groove, only the second crossbar needs to be placed into the machining equipment; the entire base does not need to be placed into the machining equipment, facilitating the machining of the second clearance groove.

[0076] Furthermore, a first stop 112 is fixedly connected to the side of the first crossbar 110 facing the treadmill 200, and a second stop 122 is fixedly connected to the side of the second crossbar 120 facing the treadmill 200. The first stop 112 and the second stop 122 are respectively located on the movement path of the treadmill 200. When the treadmill 200 is in the position with the smallest inclination angle, the first stop 112 and the second stop 122 respectively support the treadmill 200.

[0077] In an embodiment of the present invention, when the running track is at its minimum tilt angle, the first stop and the second stop respectively support the running track, limiting the rotation range of the running track. Alternatively, but not limited to, when the running track is at its minimum tilt angle, the first stop and the second stop are perpendicular to the running track, with the first stop perpendicular to the first crossbar and the second stop perpendicular to the second crossbar. This ensures that both the first and second stops bear force along their length when supporting the running track, guaranteeing the reliability of their support.

[0078] Furthermore, the second stop 122 is fixedly connected to the first limit sensor 1221, the first limit sensor 1221 is electrically connected to the regulating motor 300, and the running platform 200 is provided with a first trigger block 220. When the running platform 200 is at the position with the smallest tilt angle, the first trigger block 220 triggers the first limit sensor 1221.

[0079] In an embodiment of the present invention, when the treadmill is at its minimum inclination angle, the first trigger block triggers the first limit sensor. The adjusting motor receives the signal sent by the first limit sensor, and the adjusting motor stops operating, preventing the treadmill from continuing to rotate downwards. The first limit sensor, the first stop, and the second stop constitute a dual limit on the minimum inclination angle of the treadmill, ensuring the reliability of the slope adjustment mechanism.

[0080] Furthermore, the first support mechanism 450 is fixedly connected to a first bushing 454 at one end near the base 100, the base 100 is fixedly connected to a first support 130, the first support 130 is fixedly connected to a third rotating shaft 131, the first bushing 454 is rotatably connected to the third rotating shaft 131, and the first bushing 454 is fixedly connected to a rotation limit block 4541. The second support mechanism 550 is fixedly connected to a second bushing 560 at one end near the base 100, the base 100 is fixedly connected to a second support 140, the second support 140 is fixedly connected to a fourth rotating shaft 141, and the second bushing 560 is rotatably connected to the fourth rotating shaft 141. When the running platform 200 is at the position of maximum inclination, the rotation limit block 4541 is stopped by the first support 130.

[0081] In an embodiment of the present invention, when the treadmill is at its maximum inclination angle, the rotation limit block is stopped by the first support, and the treadmill cannot continue to rotate upward. The rotation limit block restricts the rotation range of the treadmill, ensuring the reliability of the slope adjustment mechanism.

[0082] The rotational connection between the first bushing and the third rotating shaft enables the rotational connection between the first support mechanism and the base, ensuring the reliability of the rotational connection between the two.

[0083] The rotational connection between the second bushing and the fourth rotating shaft enables the rotational connection between the second support mechanism and the base, ensuring the reliability of the rotational connection between the two.

[0084] Furthermore, a second limit sensor 150 is fixedly connected to the base 100. The second limit sensor 150 is electrically connected to the adjusting motor 300. The second limit sensor 150 is located on the movement path of the second linkage mechanism 540. When the running platform 200 is at the position with the largest tilt angle, the second linkage mechanism 540 triggers the second limit sensor 150.

[0085] In an embodiment of the invention, when the treadmill is at its maximum inclination angle, the second linkage mechanism triggers the second limit sensor. The adjusting motor receives the signal from the second limit sensor and stops operating, preventing the treadmill from continuing to rotate upwards. The second limit sensor and the rotation limit block constitute a dual limit on the maximum inclination angle of the treadmill, ensuring the reliability of the slope adjustment mechanism.

[0086] Furthermore, it also includes a pull rope displacement sensor, which includes a sensor body 610 and a pull rope. Either the sensor body 610 or the pull rope is fixedly connected to the base 100, and the other of the sensor body 610 and the pull rope is fixedly connected to the treadmill frame 200.

[0087] In an embodiment of the present invention, by setting a pull rope displacement sensor, the distance between the running platform frame and the base will change during the slope adjustment of the running platform, which will cause the length of the pull rope pulled out of the sensor to change, thereby reflecting the slope of the running platform, so that the user can accurately adjust the slope of the running platform. Figure 2 The image shows the sensor body 610 fixed on the base 100, with one end of the pull rope fixed on the treadmill frame 200. A fixing screw 620 can be installed on the treadmill frame 200 to fix the end of the pull rope.

[0088] Furthermore, the first worm gear mechanism 410 includes a first worm 411, which is rotatably connected to a first fixed base 430. A first fixed plate 160 is fixedly connected to the base 100. The first fixed base 430 is detachably fixedly connected to the first fixed plate 160. The first fixed base 430 is located on the side of the first fixed plate 160 facing away from the first linkage mechanism 440. A first telescopic screw 420 passes through the first fixed plate 160 and is rotatably connected to the first linkage mechanism 440. The second worm gear mechanism 510 includes... The system includes a second worm gear 511, which is rotatably connected to a second fixed base 530. A second fixed plate 170 is fixedly connected to the base 100. The second fixed base 530 is detachably fixedly connected to the second fixed plate 170. The second fixed base 530 is located on the side of the second fixed plate 170 facing away from the second linkage mechanism 540. A second telescopic screw 520 passes through the second fixed plate 170 and is rotatably connected to the second linkage mechanism 540. An adjusting motor 300 drives the first worm gear 411 and the second worm gear 511 to rotate synchronously.

[0089] In embodiments of the present invention, the first fixed seat and the first fixed plate are detachably fixedly connected. This detachable connection can be achieved, but is not limited to, by a plurality of first bolts 431. The first fixed seat is located on the side of the first fixed plate facing away from the first linkage mechanism. During use of the running platform, the running platform frame applies downward pressure to the first linkage mechanism, the first linkage mechanism applies tension to the first telescopic screw, the first telescopic screw applies tension to the first fixed seat, and the first fixed seat applies thrust to the first fixed plate. This makes the first fixed seat and the first fixed plate the primary load-bearing objects, rather than the first bolts, resulting in a more reasonable force distribution on the first lifting assembly and improving the reliability of the slope adjustment mechanism.

[0090] The second fixed seat and the second fixed plate are detachably fixedly connected, but not limited to, by means of multiple second bolts 531. The second fixed seat is located on the side of the second fixed plate facing away from the second linkage mechanism. During the use of the running platform, the running platform frame applies downward pressure to the second linkage mechanism, the second linkage mechanism applies tension to the second telescopic screw, the second telescopic screw applies tension to the second fixed seat, and the second fixed seat applies thrust to the second fixed plate. This makes the second fixed seat and the second fixed plate the main load-bearing objects, rather than the second bolts, resulting in a more reasonable force distribution on the second lifting assembly and improving the reliability of the slope adjustment mechanism.

[0091] Furthermore, the side of the first fixing plate 160 facing the first linkage mechanism 440 is fixedly connected to the base 100 through a plurality of first ribs 161, and the side of the second fixing plate 170 facing the second linkage mechanism 540 is fixedly connected to the base 100 through a plurality of second ribs 171.

[0092] In an embodiment of the present invention, the first rib reinforces the first fixing plate, ensuring the reliability of the fixed connection between the first fixing plate and the base. The second rib reinforces the second fixing plate, ensuring the reliability of the fixed connection between the second fixing plate and the base.

[0093] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A large-scale professional running track, characterized in that, This large professional running track includes: Base; A treadmill mechanism includes a treadmill frame and a circular running belt. A front roller is rotatably connected to one end of the treadmill frame, and a rear roller is rotatably connected to the other end of the treadmill frame. The circular running belt surrounds the front roller and the rear roller, and the front roller is rotatably connected to the base. A drive mechanism is fixedly connected to the base, and the drive mechanism drives the front roller to rotate; An adjustment motor is fixedly connected to the base; A first lifting assembly includes a first worm gear mechanism, a first telescopic screw, a first fixed base, a first linkage mechanism, and a first support mechanism. The first fixed base is fixedly connected to the base. One end of the first linkage mechanism is rotatably connected to the first telescopic screw, and the other end of the first linkage mechanism is rotatably connected to the first support mechanism. One end of the first support mechanism is rotatably connected to the base, and the other end of the first support mechanism supports the running platform. The first telescopic screw is slidably connected to the first fixed base, and the first worm gear mechanism is connected to the first telescopic screw. The second lifting assembly includes a second worm gear mechanism, a second telescopic screw, a second fixed base, a second linkage mechanism, and a second support mechanism. The second fixed base is fixedly connected to the base. One end of the second linkage mechanism is rotatably connected to the second telescopic screw, and the other end is rotatably connected to the second support mechanism. One end of the second support mechanism is rotatably connected to the base, and the other end supports the running platform. The second telescopic screw is slidably connected to the second fixed base, and the second worm gear mechanism is connected to the second telescopic screw. The first lifting assembly and the second lifting assembly are symmetrically arranged. The adjusting motor drives the first worm gear mechanism and the second worm gear mechanism to move synchronously, thereby causing the first telescopic screw and the second telescopic screw to extend and retract synchronously. The first support mechanism includes a first support roller, a second support roller, and a third support roller arranged in sequence; the second support mechanism includes a fourth support roller, a fifth support roller, and a sixth support roller arranged in sequence. During the rotation of the treadmill frame, the second support roller and the fifth support roller remain in contact with the treadmill frame at all times. When the treadmill frame is in its minimum tilt position, the first support roller, the second support roller, the fourth support roller, and the fifth support roller respectively support the treadmill frame. When the treadmill is at its maximum tilt angle, the second support roller, the third support roller, the fifth support roller, and the sixth support roller support the treadmill respectively.

2. The large professional running track according to claim 1, characterized in that, The drive mechanism includes a first drive motor and a second drive motor, which synchronously drive the front roller to rotate.

3. The large professional running track according to claim 1, characterized in that, One end of the front roller is fixedly connected to a first rotating shaft, and the other end of the front roller is fixedly connected to a second rotating shaft. The front roller, the first rotating shaft, and the second rotating shaft are coaxially arranged. The first rotating shaft is rotatably connected to the treadmill frame through a first bearing, and the second rotating shaft is rotatably connected to the treadmill frame through a second bearing. The first bearing and the second bearing are located outside the front roller.

4. The large professional running track according to claim 3, characterized in that, The first rotating shaft is rotatably connected to the base via a third bearing, and the second rotating shaft is rotatably connected to the base via a fourth bearing. The third and fourth bearings are located outside the front roller.

5. The large professional running track according to claim 3, characterized in that, The second rotating shaft is fitted with a hollow shaft encoder, which is detachably fixed to the base.

6. The large professional running track according to claim 1, characterized in that, A suspension rod is fixedly connected to the side of the treadmill frame facing away from the base. A hook is connected to the suspension rod, and the hook is connected to a trigger. The trigger is electrically connected to the drive mechanism.

7. The large professional running track according to claim 1, characterized in that, The first support mechanism further includes a first support tube and a first connector. The first connector is fixedly connected to the side of the first support tube facing the first telescopic screw, and the first connector is rotatably connected to the first linkage mechanism. The second support mechanism further includes a second support tube and a second connector. The second connector is fixedly connected to the side of the second support tube facing the second telescopic screw, and the second connector is rotatably connected to the second linkage mechanism.

8. The large professional running track according to claim 7, characterized in that, The first connector includes a first U-shaped plate, which comprises a first base plate, a first folded edge, and a second folded edge. The first folded edge and the second folded edge are respectively fixedly connected to both sides of the first support tube. The first base plate abuts against the side of the first support tube facing the first telescopic screw. A first connecting plate and a second connecting plate, which are spaced apart and arranged opposite to each other, are fixedly connected to the side of the first U-shaped plate facing away from the first support tube. The first connecting plate and the second connecting plate are respectively rotatably connected to the first linkage mechanism. The second connector includes a second U-shaped plate, which includes a second base plate, a third folded edge, and a fourth folded edge. The third folded edge and the fourth folded edge are fixedly connected to both sides of the second support tube, respectively. The second base plate abuts against the side of the second support tube facing the second telescopic screw. The side of the second U-shaped plate facing away from the second support tube is fixedly connected to a third connecting plate and a fourth connecting plate that are spaced apart and arranged opposite to each other. The third connecting plate and the fourth connecting plate are rotatably connected to the second linkage mechanism, respectively.

9. The large professional running track according to claim 8, characterized in that, The first linkage mechanism includes a first sub-link and a second sub-link, which are connected by a first synchronous plate. A first reinforcing plate is detachably fixedly connected to the side of the first connecting plate facing away from the second connecting plate. The first reinforcing plate and the first connecting plate are respectively fixedly connected to a first rotating shaft. The first sub-link is rotatably connected to the first rotating shaft, and a portion of the first sub-link is located between the first reinforcing plate and the first connecting plate. The second connecting plate is detachably fixedly connected to a second reinforcing plate on the side opposite to the first connecting plate. The second reinforcing plate and the second connecting plate are respectively fixedly connected to the second rotating shaft. The second sub-connecting rod is rotatably connected to the second rotating shaft. The second sub-connecting rod is located between the second reinforcing plate and the second connecting plate.

10. The large professional running track according to claim 9, characterized in that, A first partition block is provided between the first connecting plate and the first reinforcing plate, and a second partition block is provided between the second connecting plate and the second reinforcing plate.

11. The large professional running track according to claim 8, characterized in that, The second linkage mechanism includes a third sub-link and a fourth sub-link, which are connected by a second synchronous plate. A third reinforcing plate is detachably fixedly connected to the side of the third connecting plate facing away from the fourth connecting plate. The third reinforcing plate and the third connecting plate are respectively fixedly connected to a third rotating shaft. The third sub-link is rotatably connected to the third rotating shaft, and part of the third sub-link is located between the third reinforcing plate and the third connecting plate. The fourth connecting plate is detachably fixedly connected to a fourth reinforcing plate on the side opposite to the third connecting plate. The fourth reinforcing plate and the fourth connecting plate are respectively fixedly connected to the fourth rotating shaft. The fourth sub-connecting rod is rotatably connected to the fourth rotating shaft. The fourth sub-connecting rod is located between the fourth reinforcing plate and the fourth connecting plate.

12. The large professional running track according to claim 11, characterized in that, A third partition block is provided between the third connecting plate and the third reinforcing plate, and a fourth partition block is provided between the fourth connecting plate and the fourth reinforcing plate.

13. The large professional running track according to claim 12, characterized in that, The treadmill frame has a first guide protrusion fixedly connected to the side facing the first support mechanism. The first support roller, the second support roller, and the third support roller are each provided with a first guide groove that mates with the first guide protrusion. The treadmill frame is fixedly connected to a second guide protrusion on the side facing the second support mechanism, and the fourth support roller, the fifth support roller and the sixth support roller are respectively provided with a second guide groove that cooperates with the second guide protrusion.

14. The large professional running track according to claim 1, characterized in that, The base is detachably and fixedly connected to a first crossbar and a second crossbar. The first crossbar is parallel to the second crossbar, and the first crossbar is located below the first support mechanism. The portion of the first crossbar located on the movement path of the first support mechanism is provided with a first clearance groove. The second crossbar is located below the second support mechanism, and the portion of the second crossbar located on the movement path of the second support mechanism is provided with a second clearance groove.

15. The large professional running track according to claim 14, characterized in that, A first stop is fixedly connected to the side of the first crossbar facing the treadmill frame, and a second stop is fixedly connected to the side of the second crossbar facing the treadmill frame. The first stop and the second stop are respectively located on the movement path of the treadmill frame. When the treadmill frame is in the position of minimum inclination, the first stop and the second stop respectively support the treadmill frame.

16. The large professional running track according to claim 15, characterized in that, The second stop is fixedly connected to a first limit sensor, which is electrically connected to the adjusting motor. The running platform is equipped with a first trigger block. When the treadmill is at its minimum tilt angle, the first trigger block triggers the first limit sensor.

17. The large professional running track according to claim 1, characterized in that, A first bushing is fixedly connected to one end of the first support mechanism near the base. A first support is fixedly connected to the base, and a third rotating shaft is fixedly connected to the first support. The first bushing is rotatably connected to the third rotating shaft, and a rotation limit block is fixedly connected to the first bushing. A second bushing is fixedly connected to one end of the second support mechanism near the base. A second support is fixedly connected to the base, and a fourth rotating shaft is fixedly connected to the second support. The second bushing is rotatably connected to the fourth rotating shaft. When the running platform is at its maximum tilt angle, the rotation limit block is stopped by the first support.

18. The large professional running track according to claim 1, characterized in that, A second limit sensor is fixedly connected to the base. The second limit sensor is electrically connected to the adjusting motor and is located on the movement path of the second linkage mechanism. When the treadmill is at its maximum tilt angle, the second linkage mechanism triggers the second limit sensor.

19. The large professional running track according to claim 1, characterized in that, It also includes a pull rope displacement sensor, which includes a sensor body and a pull rope. Either the sensor body or the pull rope is fixedly connected to the base, and the other of the sensor body and the pull rope is fixedly connected to the treadmill frame.

20. The large professional running track according to claim 1, characterized in that, The first worm gear mechanism includes a first worm, which is rotatably connected to the first fixed base. A first fixed plate is fixedly connected to the base, and the first fixed base is detachably fixedly connected to the first fixed plate. The first fixed base is located on the side of the first fixed plate facing away from the first linkage mechanism. The first telescopic screw passes through the first fixed plate and is rotatably connected to the first linkage mechanism. The second worm gear mechanism includes a second worm, which is rotatably connected to the second fixed base. A second fixed plate is fixedly connected to the base, and the second fixed base is detachably fixed to the second fixed plate. The second fixed base is located on the side of the second fixed plate facing away from the second linkage mechanism. The second telescopic screw passes through the second fixed plate and is rotatably connected to the second linkage mechanism. The regulating motor drives the first worm and the second worm to rotate synchronously.

21. The large professional running track according to claim 20, characterized in that, The side of the first fixing plate facing the first linkage mechanism is fixedly connected to the base through multiple first ribs. The side of the second fixing plate facing the second linkage mechanism is fixedly connected to the base through multiple second ribs.

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