Multifunctional stepless treadmill and control system thereof

Abstract

The invention discloses a multifunctional stepless running machine which comprises a running belt, a belt supporting plate, a stepless speed change mechanism, a frame and a control module. The two ends of the running belt are arranged on the supporting rollers in a sleeving mode, and the two sides of the belt supporting plate are fixed to the two sides of the frame; a plurality of electronic pressure detection strips which are arranged in a row in parallel are embedded in the upper surface of the belt supporting plate; the stepless speed change mechanism comprises a stepless speed change wheel, a speed change wheel shaft lever, a stepless speed change conversion assembly, a shaft lever rotating frame, a driving mechanism and a roller driving belt, the control system comprises a control module, and the control module comprises a controller and a control panel; a running speed detection unit; and an infinitely variable speed adjusting unit. By detecting the running speed change of the pedal on the running belt to perform the stepless speed change of the diameter of the stepless speed change wheel, stepless speed change is realized, intelligent speed change is achieved, manual adjustment is not needed, the problem of unbalanced running speed during running is better solved, and running is more comfortable.

Description

Technical Field

[0001] The invention relates to the technical field of treadmills, and in particular to a multifunctional stepless treadmill and a control system thereof. Background Art

[0002] With the improvement of people's living standards, treadmills have gradually become people's favorite fitness equipment because of their simple operation and good exercise effect. The current treadmills are all multi-level controlled. Once the running speed of the running track is determined, it cannot automatically change speed during the running process. It can only switch to a lower level of movement speed. Generally, it is impossible to automatically change speed at a certain level of speed, that is, automatically increase the speed of the determined level by about 0-50% to achieve stepless speed change, similar to the automatic gear of a car. However, the existing treadmills cannot automatically change speed according to the running speed of the person or have stepless speed change, but the speed change effect is not good. Therefore, this patent aims to solve the problem of the stepless speed change function of the treadmill. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the present invention is to provide a multifunctional stepless treadmill and a control system thereof, which solves the problem that the stepless speed change is impossible or the stepless speed change effect is poor.

[0004] A multifunctional stepless treadmill according to the present invention comprises a running belt, a belt support plate, a stepless speed change mechanism, a frame and a control module; The two ends of the running belt are sleeved on the supporting rollers, the two sides of the belt support plate are fixed on the two sides of the frame, and the lower part of the upper layer of the running belt is placed on the belt support plate; The upper surface of the belt support plate is embedded with a plurality of electronic pressure detection strips arranged in parallel in a row; The continuously variable speed mechanism includes a continuously variable speed wheel, a speed wheel shaft, a continuously variable speed conversion assembly, a shaft rotating frame, a driving mechanism and a roller driving belt. The two ends of the supporting roller on the front side of the running belt are sleeved with driving gear plates, and the speed wheel shaft is sleeved with two continuously variable speed wheels corresponding to the driving gear plates. A roller driving belt is sleeved between the driving gear plates and the corresponding continuously variable speed wheels. The continuously variable speed wheel includes a plurality of outwardly extending arc-shaped gear plates, an inner lining steel ring and a connecting rod. The outer wall of the inner lining steel ring is arranged along the Eight outward-extending arc-shaped gear plates are provided, and a pushing square rod is provided at the inner center of each outward-extending arc-shaped gear plate, and the pushing square rod moves through the side wall of the inner lining steel ring to the inside thereof, and the inner side wall of the inner lining steel ring is connected to the shaft rod of the speed change wheel by two circles of connecting rods, and each of the continuously variable speed change wheels is symmetrically provided with continuously variable speed change conversion components on both sides, and the continuously variable speed change conversion components include a continuously variable push ring, a squeeze ring and a squeeze ring slide rod, and the continuously variable push ring is provided with eight equally rotating rods on one side of the continuously variable speed change wheel. The outer ends of the two gears are connected with the gear train of the driven gear, and the two gears are connected with the gear train by the driven gear wheel, and the two gears are connected with the gear train by the driven gear wheel. The control module includes a controller and a control panel. Each of the electronic pressure detection strips, the drive motor and the synchronous electronically controlled hydraulic cylinder is electrically connected to the controller. The control panel is arranged on the panel mounting position of the treadmill and is electrically connected to the controller.

[0005] In some embodiments of the present invention, the radius of the eight outward-extended arc-shaped gear plates when attached along the inner lining steel ring is R1, and the radius of the circular ring formed by the eight outward-extended arc-shaped gear plates synchronously expanding outward is R2, and the size of R2 is 1-1.5 times the size of R1.

[0006] In some other embodiments of the present invention, the rotation position axes of the two rotation support rods installed on the support block are on the same straight line as the axis of the driving motor shaft.

[0007] In some other embodiments of the present invention, ribs are provided on both sides of the driving gear plate and on both sides of the eight outwardly extending arc-shaped gear plates.

[0008] In other embodiments of the present invention, rotating rings are exposed at both ends of the speed wheel axle, two arc-shaped fixed rails are symmetrically provided at both ends of the speed wheel axle, an arc-shaped sliding groove is provided on the inner side of the arc-shaped fixed rail, and the two ends of the speed wheel axle are correspondingly inserted into the arc-shaped sliding grooves on the inner sides of the two arc-shaped fixed rails.

[0009] In other embodiments of the present invention, the speed change wheel shaft rod is moved downward by a rotating support rod and the rotation arc range is 0-30°.

[0010] A control system for a multifunctional stepless treadmill, comprising: A control module, the control module comprising a controller and a control panel, the control panel being arranged at a panel mounting position of the treadmill and being electrically connected to the controller; A running speed detection unit, the running speed detection unit includes a plurality of electronic pressure detection strips in parallel in a row embedded in the upper surface of a support plate, wherein the electronic pressure detection strips in a row are numbered sequentially from the front to the back; The stepless speed adjustment unit comprises a stepless speed wheel, a speed wheel shaft, a stepless speed conversion assembly and a driving motor. A driving gear plate is sleeved on the rotating shaft of the driving motor, a driven gear plate is sleeved on the middle position of the speed wheel shaft, the driving gear plate and the driven gear plate are connected by a chain, two stepless speed wheels are symmetrically sleeved on the speed wheel shaft, rotating rings are sleeved on both ends of the speed wheel shaft, synchronous electric-controlled hydraulic cylinders are installed on the two rotating rings and the bottom ends of the synchronous electric-controlled hydraulic cylinders are rotatably installed, the controller controls the driving motor to rotate in steps, the controller controls the synchronous electric-controlled hydraulic cylinder to pull the speed wheel shaft to move in an arc, thereby driving the stepless speed conversion assembly to drive the stepless conversion of the stepless speed wheel, and the stepless speed wheel drives the running belt of the stepless treadmill to rotate through the roller drive belt.

[0011] In some other embodiments of the present invention, when running on the treadmill belt, the average value of the position of the multiple electronic pressure detection bars on the belt support plate where the first foot steps is R1, and the average value of the position of the multiple electronic pressure detection bars on the belt support plate where the second foot steps is R2. At this time, the running speed of the treadmill belt is V, the time interval between the two feet stepping on the belt support plate is t1, and the distance between the first and second feet stepping is (R2-R1)+vt1. At this time, the treadmill belt still runs at the speed of v. The average value of the position of the third foot on the multiple electronic pressure detection strips on the support plate is R3, the time interval between the second and third feet is t2, and the spacing between the second and third feet is (R3-R2)+vt2. The pedal amplitude change rate = (R3-2R2+R1+vt2-vt1) / (R2-R1+vt1)*100%. If the pedal amplitude change rate is greater than 10%, the stepless speed adjustment unit is started to change the speed of the stepless speed wheel.

[0012] In some other embodiments of the present invention, when the sum of the continuously changed values ​​of the pedaling amplitude change rate begins to be greater than 10%, the continuously variable speed adjustment unit is also started to change the speed of the continuously variable wheel 5.

[0013] In the present invention, under the set running belt level speed, the diameter of the continuously variable speed wheel is detected to perform continuously variable speed operation by detecting the change in running speed when the foot is stepped on the running belt, thereby realizing continuously variable speed and achieving intelligent speed change, without manual adjustment, and being more adaptable to the problem of uneven running speed during running, making running more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 The present invention is a three-dimensional structural schematic diagram of a multifunctional stepless treadmill.

[0015] Figure 2 The figure is a schematic diagram of the side structure of the infinitely variable speed in a multifunctional infinitely variable treadmill proposed by the present invention.

[0016] Figure 3 for Figure 1 Enlarged structural diagram at A in the middle.

[0017] Figure 4 The present invention provides a schematic diagram of the stepless speed change structure of a multifunctional stepless treadmill.

[0018] Figure 5 for Figure 4 Enlarged structural diagram at B in the middle.

[0019] Figure 6 This is a schematic cross-sectional structure diagram of the position of the continuously variable speed wheel proposed by the present invention (minimum speed change).

[0020] Figure 7 The cross-sectional structure diagram of the position of the continuously variable speed wheel proposed by the present invention (relative to Figure 6 Continuously variable speed).

[0021] Figure 8 The present invention proposes Figure 6 to Figure 7Schematic diagram of the position of the ring on the extrusion ring slide rod in the state.

[0022] Fig. 9 This is a schematic diagram of the distribution of electronic pressure detection strips on the support plate proposed by the present invention.

[0023] In the figure: 1, running belt; 11, belt support plate; 111, electronic pressure detection strip; 2, stepless speed change structure installation box; 3, driving gear plate; 4, roller driving belt; 5, stepless speed change wheel; 51, inner lining steel ring; 52, pushing square rod; 53, outward arc gear plate; 6, driving motor; 61, driving gear plate; 62, chain; 7, speed change wheel shaft; 71, driven gear plate; 72, rotating ring; 73, synchronous electronically controlled hydraulic cylinder; 8, rotating support rod; 81, support block; 9, extrusion ring; 91, sleeve ring; 911, rotating installation block; 92, extrusion ring slide rod; 10, stepless push ring; 101, push rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] like Figure 1-9 As shown, a multifunctional stepless treadmill proposed by the present invention comprises a running belt 1, a belt support plate 11, a stepless speed change mechanism, a frame and a control module; The two ends of the running belt 1 are sleeved on the supporting rollers, the two sides of the belt support plate 11 are fixed on the two sides of the frame, and the lower part of the upper layer of the running belt 1 is placed on the belt support plate 11; the frame is existing and will not be described here. Figure 1 The part with number 2 is the installation position of the control and speed change structure, and the specific structure is drawn in the following figure; The upper surface of the belt support plate 11 is embedded with a plurality of electronic pressure detection strips 111 arranged in parallel in a row; The stepless speed change mechanism includes a stepless speed change wheel 5, a speed change wheel shaft 7, a stepless speed change conversion assembly, a shaft rotating frame, a driving mechanism and a roller drive belt 4. The two ends of the support roller on the front side of the running belt 1 are sleeved with driving gear plates 3. The speed change wheel shaft 7 is sleeved with two stepless speed change wheels 5 corresponding to the driving gear plates 3. A roller drive belt 4 is sleeved between the driving gear plates 3 and the corresponding stepless speed change wheels 5. The stepless speed change wheel 5 includes a plurality of outwardly extending arc-shaped gear plates 53, an inner lining steel ring 51 and a connecting rod 52. The outer wall of the inner lining steel ring 51 is sequentially attached with eight The arc-shaped gear plate 53 is outwardly extended, and a pushing square rod 52 is provided at the inner center of each of the arc-shaped gear plates 53, and the pushing square rod 101 is movable through the side wall of the lining steel ring 51 to the inside thereof, and the inner wall of the lining steel ring 51 is connected to the speed-changing wheel shaft 7 by two circles of connecting rods 61, and each of the stepless speed-changing wheels 5 is symmetrically provided with stepless speed-changing conversion components on both sides, and the stepless speed-changing conversion components include a stepless push ring 10, a squeeze ring 9 and a squeeze ring slide 92, and the stepless push ring 10 is evenly rotated on one side of the stepless speed-changing wheel 5 by eight push rods 101, and the eight push rods 101 are arranged on the side of the stepless speed-changing wheel 5. The other end of the push rod 101 corresponds to one side of the bottom end of the push square rod 52, and a squeeze ring 9 is arranged on the outside of the stepless push ring 10, and the stepless push ring 10 and the squeeze ring 9 are both movably sleeved on the speed change wheel shaft rod 7. The upper and lower ends of the outer wall of the squeeze ring 9 are symmetrically provided with a rotating mounting block 911, and a sleeve ring 91 is rotatably mounted on the rotating mounting block 911. The upper and lower sleeve rings 91 are sleeved on two parallel squeezing ring slide rods 92 that are tilted downward and bent inward. The shaft rod rotating frame includes two rotating support rods 8 and two support blocks 81, and the support blocks 81 are fixed and One end of the two rotating support rods 8 is correspondingly rotatably mounted on the support block 81, and the other end is sleeved on the bearing and the bearing is sleeved on the speed wheel shaft rod 7. A driving motor 6 is arranged between the two supporting blocks 81, and a driving gear plate 61 is sleeved on the rotating shaft of the driving motor 6. A driven gear plate 71 is sleeved in the middle position of the speed wheel shaft rod 7. The driving gear plate 61 and the driven gear plate 71 are connected by a chain 62. Rotating rings 72 are sleeved at both ends of the speed wheel shaft rod 7. Synchronous electronically controlled hydraulic cylinders 73 are installed on the two rotating rings 72, and the bottom ends of the synchronous electronically controlled hydraulic cylinders 73 are rotatably installed. When running, the running speed changes. When it is detected that the speed change is greater than the set threshold, the stepless speed change is started. At this time, the synchronous electronically controlled hydraulic cylinder 73 (or other stretching devices are replaced, such as the shaft of the hydraulic cylinder is replaced by a pull rod, and the hydraulic cylinder barrel is replaced by a motor and a screw rod, and the motor drives the screw rod to rotate to pull the pull rod up and down, thereby realizing similar hydraulic cylinder work) will be pulled down synchronously. Since the rotating support rod 8 rotates in an arc along the two support blocks 81, the speed change wheel shaft rod 7 moves in an arc. When the stepless speed change wheel 5 moves downward, the distance between the center of the stepless speed change wheel 5 and the center of the driving gear plate 3 becomes smaller, but during the arc downward movement process, the extrusion ring 9 moves downward along the extrusion ring slide rod 92 to realize the inner push ( Figure 6 to Figure 7During the process, the extrusion ring 9 pushes the stepless push ring 10 inwardly, so that the relative push rod 101 pushes the connecting rod 52 upwardly, and the outwardly extended arc gear plate 53 is pushed out and separated from the inner lining steel ring 51, so that eight outwardly extended arc gear plates 53 are formed to form an enlarged gear plate, thereby, at the same time, the slack roller drive belt 4 is synchronously expanded to prevent it from slackness, and the driving speed can be increased. The speed of the driving motor remains unchanged, and the stepless speed change is performed to increase the speed of the running belt 1.

[0026] The inner wall of the inner lining steel ring 51 is connected to the gear wheel shaft rod 7 by two circles of connecting rods 61, similar to the steel frame of a bicycle fan, which are cross-shaped, and are evenly distributed along a circle like an umbrella frame flatly supporting a plane, and two circles are set. Each push rod 101 moves between two adjacent connecting rods 61 without interfering.

[0027] Due to the rotation process, there will be friction between the stepless push ring 10 and the extrusion ring 9. Figure 6 and 7 The rolling steel balls with the number 93 are on the side walls to reduce friction resistance.

[0028] The control module includes a controller and a control panel. Each of the electronic pressure detection strips 111, the drive motor 6 and the synchronous electronically controlled hydraulic cylinder 73 is electrically connected to the controller. The control panel is arranged at the panel mounting position of the treadmill and is electrically connected to the controller.

[0029] The controller can be set in the panel mounting position of the treadmill, and the overall control is similar or the same as traditional.

[0030] The radius of the eight outward arc gear plates 53 when attached along the inner lining steel ring 51 is R1, and the radius of the ring formed by the eight outward arc gear plates 53 when synchronously expanded outward is R2, and the size of R2 is 1-1.5 times the size of R1. To achieve the maximum infinitely variable speed of 0.5 times, you need to manually adjust it. The infinitely variable speed makes it difficult for people to control their running and easy to fall. Generally, it is best to increase the speed by about 20%.

[0031] The rotation position axis of the two rotating support rods 8 mounted on the support block 81 is in the same straight line as the axis of the rotating shaft of the driving motor 6, so as to ensure that the rotating speed change wheel shaft rod 7 does not affect the distance between the rotating shaft of the driving motor 6 and the speed change wheel shaft rod 7.

[0032] Both sides of the driving gear plate 3 and the eight outward arc-shaped gear plates 53 are provided with retaining edges to prevent the roller driving belt 4 from being disengaged.

[0033] The two ends of the speed wheel axle rod 7 expose rotating rings 72, and two arc-shaped fixed rails are symmetrically arranged at the two ends of the speed wheel axle rod 7. The inner side of the arc-shaped fixed rails is provided with arc-shaped sliding grooves, and the two ends of the speed wheel axle rod 7 are correspondingly inserted into the arc-shaped sliding grooves inside the two arc-shaped fixed rails.

[0034] The two ends are fixed (movably fixed to prevent left and right swinging), but can move down or up along the arc-shaped slide.

[0035] The speed change wheel shaft rod 7 is moved downward by the rotating support rod 8 and the rotation arc range is 0-30°. The angle change is small, which prevents the poor stability of the stepless speed change.

[0036] A control system for a multifunctional stepless treadmill, comprising: A control module, the control module comprising a controller and a control panel, the control panel being arranged at a panel mounting position of the treadmill and being electrically connected to the controller; A running speed detection unit, the running speed detection unit includes a plurality of electronic pressure detection strips 111 embedded in a row in parallel on the upper surface of a support plate, and the electronic pressure detection strips 111 in a row are numbered sequentially from the front to the back; The stepless speed adjustment unit comprises a stepless speed wheel 5, a speed wheel shaft 7, a stepless speed conversion assembly and a driving motor 6. A driving gear plate 61 is sleeved on the rotating shaft of the driving motor 6. A driven gear plate 71 is sleeved in the middle position of the speed wheel shaft 7. The driving gear plate 61 and the driven gear plate 71 are connected by a chain 62. Two stepless speed wheels 5 are symmetrically sleeved on the speed wheel shaft 7. Rotating rings 72 are sleeved at both ends of the speed wheel shaft 7. Synchronous electronically controlled hydraulic cylinders 73 are installed on the two rotating rings 72 and the bottom ends of the synchronous electronically controlled hydraulic cylinders 73 are rotatably installed. The controller controls the driving motor 6 to rotate in stages. The controller controls the synchronous electronically controlled hydraulic cylinder 73 to pull the speed wheel shaft 7 to move in an arc shape, thereby driving the stepless speed conversion assembly to drive the stepless conversion of the stepless speed wheel 5. The stepless speed wheel 5 drives the running belt 1 of the stepless treadmill to rotate through the roller driving belt 4.

[0037] The internal structure of the stepless speed adjustment unit is the same as that of the stepless speed mechanism. The explanations of the stepless speed wheel 5, the speed wheel shaft 7, and the stepless speed conversion assembly are as above and will not be repeated here.

[0038] When running on the treadmill belt 1, the average value of the position of the multiple electronic pressure detection strips 111 on the belt support plate 11 where the first foot steps is R1, and the average value of the position of the multiple electronic pressure detection strips 111 on the belt support plate 11 where the second foot steps is R2. At this time, the running speed of the treadmill belt is V, the time interval between the two feet stepping on the belt support plate 11 is t1, and the distance between the first and second feet stepping is (R2-R1)+vt1. At this time, the treadmill belt still runs at the speed of v. The average value of the position of the third foot on the multiple electronic pressure detection strips 111 on the support plate 11 is R3, the time interval between the second and third feet is t2, and the spacing between the second and third feet is (R3-R2)+vt2. The pedal amplitude change rate = (R3-2R2+R1+vt2-vt1) / (R2-R1+vt1)*100%. If the pedal amplitude change rate is greater than 10%, the stepless speed adjustment unit is started to change the speed of the stepless speed wheel.

[0039] The running speed is determined by the spacing and time interval between two adjacent steps. However, the running speed is uncertain. Each time the next stride is made, the running speed is compared with the previous one. Small changes do not make infinite changes. When a large change (such as 10%) is reached, infinite speed regulation is performed. Each step is compared with the previous step. When the speed exceeds the set threshold, infinite speed regulation is performed. The speed-up speed adjusts the downward arc according to the change in the change, thereby achieving the required infinite speed change.

[0040] When the sum of the continuously changing values ​​of the pedal amplitude change rate begins to be greater than 10%, the continuously variable speed adjustment unit is also started to change the speed of the continuously variable speed wheel 5.

[0041] It is also possible to perform stepless speed regulation when the change amplitude of several consecutive steps reaches the threshold (for example, 5%, -2%, 7%, the sum reaches 10%, and 10% stepless speed regulation is performed). The specific setting is based on actual needs.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional stepless treadmill, characterized by: It comprises a treadmill (1), a belt support plate (11), a stepless speed change mechanism, a frame and a control module; The two ends of the treadmill (1) are sleeved on the supporting rollers, the two sides of the belt support plate (11) are fixed on the two sides of the frame, and the lower part of the upper layer of the treadmill (1) rests on the belt support plate (11); The upper surface of the belt support plate (11) is embedded with a plurality of electronic pressure detection strips (111) arranged in parallel in a row; The stepless speed change mechanism comprises a stepless speed change wheel (5), a speed change wheel shaft (7), a stepless speed change conversion assembly, a shaft shaft rotating frame, a driving mechanism and a roller drive belt (4); the two ends of the supporting roller on the front side of the running belt (1) are sleeved with a driving gear plate (3); the speed change wheel shaft (7) is sleeved with two stepless speed change wheels (5) corresponding to the driving gear plates (3); a roller drive belt (4) is sleeved between the driving gear plates (3) and the corresponding stepless speed change wheels (5); the stepless speed change wheel (5) comprises a plurality of outwardly extending arc-shaped gear plates (53), an inner lining steel ring (51) and a connecting rod (52); eight gear plates (53) are sequentially attached to the outer wall of the inner lining steel ring (51); An outwardly extending arc-shaped gear plate (53), each of which is provided with a pushing square rod (52) at the inner center position of the outwardly extending arc-shaped gear plate (53), and the pushing square rod (101) movably penetrates the side wall of the inner lining steel ring (51) to the inside thereof, the inner side wall of the inner lining steel ring (51) and the speed change wheel shaft rod (7) are connected by two circles of connecting rods (61), each of which is provided with a stepless speed change conversion assembly symmetrically on both sides of the stepless speed change wheel (5), the stepless speed change conversion assembly comprising a stepless push ring (10), a squeeze ring (9) and a squeeze ring slide rod (92), the stepless push ring (10) is provided with eight push rods (101) that rotate evenly in one circle on one side facing the stepless speed change wheel (5), and the eight push rods (101) are provided on the one side facing the stepless speed change wheel (5). The other end of the push rod (101) is rotatably connected to one side of the bottom end of the push square rod (52), and an extrusion ring (9) is provided on the outer side of the stepless push ring (10). The stepless push ring (10) and the extrusion ring (9) are both movably sleeved on the speed change wheel shaft rod (7). The upper and lower ends of the outer wall of the extrusion ring (9) are symmetrically provided with rotation mounting blocks (911). The rotation mounting blocks (911) are rotatably mounted with a sleeve ring (91). The upper and lower sleeve rings (91) are sleeved on two parallel downwardly inclined and inwardly bent extrusion ring slide bars (92). The shaft rod rotating frame includes two rotation support rods (8) and two support blocks (81). The support blocks (81) are fixed and the two One end of the rotating support rod (8) is correspondingly rotatably mounted on the supporting block (81), and the other end is sleeved on the bearing, and the bearing is sleeved on the speed-changing wheel shaft rod (7). A driving motor (6) is provided between the two supporting blocks (81), and a driving gear plate (61) is sleeved on the rotating shaft of the driving motor (6). A driven gear plate (71) is sleeved at the middle position of the speed-changing wheel shaft rod (7). The driving gear plate (61) and the driven gear plate (71) are connected by a chain (62). Rotating rings (72) are sleeved at both ends of the speed-changing wheel shaft rod (7). Synchronous electric-controlled hydraulic cylinders (73) are installed on the two rotating rings (72), and the bottom ends of the synchronous electric-controlled hydraulic cylinders (73) are rotatably mounted. The control module comprises a controller and a control panel, each of the electronic pressure detection strips (111), the drive motor (6) and the synchronous electronically controlled hydraulic cylinder (73) are electrically connected to the controller, and the control panel is arranged at a panel mounting position of the treadmill and is electrically connected to the controller.

2. The multifunctional stepless treadmill according to claim 1, characterized in that: The radius of the eight outwardly extending arc-shaped gear plates (53) when attached to the inner lining steel ring (51) is R1, and the radius of the circular ring formed by the eight outwardly extending arc-shaped gear plates (53) is R2, and the size of R2 is 1-1.5 times the size of R1.

3. The multifunctional stepless treadmill according to claim 1, characterized in that: The rotational position axes of the two rotation support rods (8) mounted on the support block (81) are on the same straight line as the axis of the rotation shaft of the drive motor (6).

4. The multifunctional stepless treadmill according to claim 1, characterized in that: Both sides of the driving gear plate (3) and both sides of the eight outwardly extending arc-shaped gear plates (53) are provided with retaining edges.

5. The multifunctional stepless treadmill according to claim 1, characterized in that: The two ends of the speed-changing wheel axle rod (7) expose rotating rings (72), two arc-shaped fixed tracks are symmetrically arranged at the two ends of the speed-changing wheel axle rod (7), arc-shaped sliding grooves are arranged inside the arc-shaped fixed tracks, and the two ends of the speed-changing wheel axle rod (7) are correspondingly inserted into the arc-shaped sliding grooves inside the two arc-shaped fixed tracks.

6. The multifunctional stepless treadmill according to claim 1, characterized in that: The speed change wheel shaft rod (7) is moved downward by the rotating support rod (8) and the rotation arc range is 0-30°.

7. A control system for a multifunctional stepless treadmill, characterized in that: include: A control module, the control module comprising a controller and a control panel, the control panel being arranged at a panel mounting position of the treadmill and being electrically connected to the controller; A running speed detection unit, the running speed detection unit comprising a support plate with a plurality of electronic pressure detection strips (111) embedded in a row in parallel on the upper surface, wherein the electronic pressure detection strips (111) in the row are numbered in sequence from front to back; A stepless speed adjustment unit, the stepless speed adjustment unit comprising a stepless speed wheel (5), a speed wheel shaft (7), a stepless speed conversion assembly and a drive motor (6), the drive motor (6) having a driving gear plate (61) sleeved on the rotating shaft, a driven gear plate (71) sleeved at the middle position of the speed wheel shaft (7), the driving gear plate (61) and the driven gear plate (71) being connected by a chain (62), two stepless speed wheels (5) being symmetrically sleeved on the speed wheel shaft (7), and two ends of the speed wheel shaft (7) being sleeved on the rotating shaft. A rotating ring (72) is provided, and two rotating rings (72) are provided with synchronous electric-controlled hydraulic cylinders (73) and the bottom ends of the synchronous electric-controlled hydraulic cylinders (73) are rotatably installed. The controller controls the drive motor (6) to rotate in steps, and the controller controls the synchronous electric-controlled hydraulic cylinders (73) to pull the speed change wheel shaft (7) to move in an arc shape, thereby driving the stepless speed change conversion component to drive the stepless speed change wheel (5) to perform stepless conversion, and the stepless speed change wheel (5) drives the running belt (1) of the stepless treadmill to rotate through the roller drive belt (4).

8. The control system of a multifunctional stepless treadmill according to claim 7, characterized in that: When running on the treadmill (1), the average value of the position of the plurality of electronic pressure detection strips (111) on the belt support plate (11) when the first foot steps on the belt support plate (11) is R1, and the average value of the position of the plurality of electronic pressure detection strips (111) on the belt support plate (11) when the second foot steps on the belt support plate (11) is R2. At this time, the running speed of the treadmill is V, the time interval between the two feet stepping on the belt support plate (11) is t1, and the distance between the first and second feet stepping on the belt support plate (11) is (R2-R1)+vt1. At this time, the treadmill still runs at the speed v; The average value of the position of the third foot pedal on the plurality of electronic pressure detection strips (111) on the belt support plate (11) is R3, the time interval between the second and third foot pedals is t2, and the spacing between the second and third foot pedals is (R3-R2)+vt2, then the pedal amplitude change rate = (R3-2R2+R1+vt2-vt1) / (R2-R1+vt1)*100%. If the pedal amplitude change rate is greater than 10%, the stepless speed adjustment unit is started to change the speed of the stepless speed wheel.

9. The control system of a multifunctional stepless treadmill according to claim 8, characterized in that: When the sum of the continuously changed values ​​of the pedaling amplitude change rate begins to be greater than 10%, the stepless speed adjustment unit is also started to change the speed of the stepless speed wheel (5).

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