Constant-power damper and power vehicle

Abstract

The invention provides a constant-power damper and a power vehicle. The constant-power damper comprises a metal flywheel and a damping disc. The damping disc comprises a front plate, a bottom plate, a gear rotating disc clamped between the front plate and the bottom plate and a powerful magnet assembly. Coil winding assemblies are arranged on the bottom plate, and the powerful magnet assemblies are symmetrically arranged between the coil winding assemblies; the coil winding assembly receives power supply according to the target power control value; a motor and a gear are arranged on the front plate, and the motor drives the gear to drive the gear turntable to rotate according to a target power value, so that the powerful magnet assembly moves to a target position. By adopting the constant-power damper provided by the invention, the position adjustment of the powerful magnet assembly and the power supply current of the coil winding assembly are combined, so that the constant-power control output can be accurately carried out, and a power vehicle can stably output constant power.

Description

Technical Field

[0001] The invention relates to the technical field of sports training and health testing equipment, and in particular to a constant power damper and a power car. Background Art

[0002] The power bike is a testing tool used to assess an individual's cardiopulmonary function. It calculates the metabolic equivalent (MET) at a specific power through a preset power output combined with the tester's weight. Furthermore, the tester's cardiopulmonary function limit, i.e., maximum oxygen uptake, can be calculated using the MET value and its corresponding heart rate based on the two-stage power test. In the process of implementing the two-stage power test, it is first necessary to set the power of the power bike and require the tester to pedal the power bike at a fixed speed. However, in actual operation, it is often difficult for the tester to pedal the power bike at a fixed speed. Therefore, in order to ensure that the measured maximum oxygen uptake data is accurate, the power bike needs to be able to automatically adjust the damping of the damping device on the power bike according to the current user's pedaling speed so that the power bike maintains the set power.

[0003] In order to make the power car output constant power stably, the power car needs to adjust the damping dynamically in real time. At present, the damping adjustment of the power car is mainly divided into two categories: one is to control the gap between the magnet and the metal flywheel by pulling the wire to control the damping size, and the other is to control the damping size by changing the current size of the energized coil winding. However, both methods have defects. The first method is difficult to accurately control the power; although the second method is convenient to control the current and has high current control accuracy, the power adjustment range is limited due to problems such as heating. Summary of the invention

[0004] The purpose of the present invention is to provide a constant power damper and a power car with low cost and accurate constant power control in order to address the above-mentioned defects of the existing power car damping adjustment implementation.

[0005] The purpose of the present invention can be achieved by the following technical measures:

[0006] The present invention provides a constant power damper, comprising a metal flywheel and a damping disk arranged on the inner circumference of the metal flywheel and coaxially connected thereto, the two being fixed on a flywheel bracket, the damping disk comprising a front plate and a bottom plate coaxially connected thereto, a gear turntable clamped between the front plate and the bottom plate, and a strong magnet assembly connected to the gear turntable; at least one pair of coil winding assemblies are symmetrically arranged on the bottom plate on the outer circumference of the gear turntable, and at least one pair of strong magnet assemblies are symmetrically arranged between the coil winding assemblies; the coil winding assembly is controlled by a constant power controller and receives power supply according to a target power control value; a motor and a gear connected to the motor are arranged on the front plate, and the gear is meshed with the gear of the gear turntable; the motor is controlled by the constant power controller, and drives the gear to drive the gear turntable to rotate according to the target power control value, so that the strong magnet assembly moves to a target position.

[0007] Optionally, the gear turntable includes rotating teeth arranged on the outer surface and meshing with the gear, and a slide groove arranged on the surface; the strong magnet assembly includes a slider and a strong magnet; the slider is in a "T" shape, and a slider slide hole and a slider slide groove are opened on the longitudinal part of the "T" shape, and at least one rectangular groove is opened on the transverse part; the strong magnet is placed in the rectangular groove; the slider slide hole is aligned with the slide groove and is connected by a sliding bearing; a slide groove fixing sleeve passes through the slider slide groove and is fixed to the front plate and the bottom plate; when the gear turntable rotates, the sliding bearing slides in the slide groove, causing the strong magnet placed on the slider to make radial reciprocating motion relative to the center of the bottom plate.

[0008] Optionally, a limit detector is provided on the front panel, and two limit holes are provided on the gear turntable; the limit detector is used to detect whether the gear turntable has rotated to the limit position by detecting the limit holes, and feed back to the constant power controller.

[0009] Optionally, the coil winding assembly includes an electromagnet silicon steel sheet, and a coil winding disposed on the electromagnet silicon steel sheet and connected to the constant power controller; the electromagnet silicon steel sheet is disposed on the bottom plate and does not interfere with the position of the strong magnet assembly.

[0010] Optionally, a tension sensor is also included, one end of which is connected to the flywheel bracket, and the other end is connected to the damping disk, so as to detect the resistance generated by the damping disk to the rotating metal flywheel and feed it back to the constant power controller.

[0011] Optionally, it also includes an interface PCB board arranged on the front panel and connected to the constant power controller, and the coil winding assembly, the motor, the limit detector, and the tension sensor are all connected to the interface PCB board.

[0012] Optionally, it also includes a flange, which is fixed to the front plate and coaxially connected to the metal flywheel.

[0013] The present invention also provides a power vehicle, comprising the constant power damper described in any one of the above items, a frame body, a driving wheel, a speed detector, a constant power controller, a seat, an armrest, a meter and a belt; the seat is fixed to the middle part of the frame body, the driving wheel and the constant power damper are fixed to the two ends of the seat on the frame body, and the armrest and the meter are arranged on the end of the frame body near the driving wheel; the outer peripheral surface of the driving wheel is connected to the outer peripheral surface of the metal flywheel through a belt; the speed detector fixed on the frame body is connected to the driving wheel to detect the speed of the driving wheel and feed it back to the constant power controller; the meter and the speed detector are connected to the constant power controller arranged on the frame body.

[0014] Optionally, it also includes a heart rate measuring device arranged on the frame body and connected to the constant power controller, so as to detect the heart rate of the tester and feed back the heart rate to the constant power controller.

[0015] Optionally, the frame body includes a foldable front frame and a support frame for fixing the seat, and the support frame is provided with a lifting push rod motor controlled by a constant power controller to drive the lifting seat.

[0016] The constant power damper provided by the present invention comprises a metal flywheel and a damping disk arranged on the inner circumference of the metal flywheel and coaxially connected thereto, the two being fixed on a flywheel bracket, the damping disk comprising a coaxially connected front plate and a bottom plate, a gear turntable clamped between the front plate and the bottom plate, and a strong magnet assembly connected to the gear turntable; at least one pair of coil winding assemblies are symmetrically arranged on the bottom plate on the outer circumference of the gear turntable, and at least one pair of strong magnet assemblies are symmetrically arranged between the coil winding assemblies; the coil winding assembly is controlled by a constant power controller and receives power according to a target power control value; a motor and a gear connected to the motor are arranged on the front plate, and the gear is meshed with the gear turntable gear; the motor is controlled by the constant power controller, and the gear is driven to drive the gear turntable to rotate according to the target power control value, so that the strong magnet assembly moves to the target position. The constant power damper provided by the present invention can be used to adjust the power in a wide range according to the target power control value by adjusting the position of the strong magnet assembly, and at the same time, combined with the power supply current of the coil winding assembly, the power can be accurately adjusted in real time and quickly, and the combination of the two can accurately control the output of constant power.

[0017] The constant power damper used in the power vehicle provided by the present invention can accurately achieve constant power control output, so that the power vehicle can stably output constant power. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an exploded diagram of a constant power damper provided by an embodiment of the present invention;

[0019] Figure 2 is a structural schematic diagram of a constant power damper provided by an embodiment of the present invention from a side view;

[0020] Figure 3 is a schematic diagram of a front plate in a constant power damper provided in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of a bottom plate, a gear turntable, a strong magnet assembly, and a coil winding assembly in a constant power damper provided by an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the back side of a bottom plate in a constant power damper provided in an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of a gear in a constant power damper provided by an embodiment of the present invention meshing with a gear rotating disk placed on a bottom plate;

[0024] Figure 7 is a schematic diagram of a gear rotating disk in a constant power damper provided in an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of a slider in a constant power damper provided in an embodiment of the present invention;

[0026] Fig. 9 is a structural schematic diagram of a slider in a constant power damper provided by an embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of a strong magnet in a constant power damper provided by an embodiment of the present invention moving to a first position by radially reciprocating motion relative to the center of a bottom plate;

[0028] Fig.11 It is a schematic diagram of a strong magnet in a constant power damper provided by an embodiment of the present invention moving to a second position by radially reciprocating motion relative to the center of a bottom plate;

[0029] Fig.12 It is a schematic diagram of the structure of a power vehicle provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Please see Figures 1 to 9 The constant power damper provided by the embodiment of the present invention comprises a metal flywheel 1 and a damping disc 2. The damping disc 2 is arranged on the inner circumference of the metal flywheel 1, and the two are coaxially mounted on the flywheel bracket aa through the flywheel shaft bb.

[0032] The damping disk 2 includes a front plate 21, a bottom plate 22, a gear turntable 23, a strong magnet assembly 24, a coil winding assembly 25, a motor 26 and a magnetic wheel 27. The front plate 21 and the bottom plate 22 are circular as a whole, with symmetrical rectangular notches. The front plate 21 and the bottom plate 22 are coaxially connected, that is, the front plate 21, the bottom plate 22 and the metal flywheel 1 are coaxial. The gear turntable 23 is clamped between the front plate 21 and the bottom plate 22, and is coaxial with the front plate 21 and the bottom plate 22. The gear turntable 24 is circular, and a pair of coil winding assemblies 25 are symmetrically arranged on the bottom plate 22 in the area around the gear turntable 24, and two pairs of strong magnet assemblies 24 connected to the gear turntable 23 are symmetrically arranged between the coil winding assemblies 25. The motor 26 and the gear 27 are fixed on the front plate 21, wherein the gear 27 is fixed on the side of the front plate 21 facing the gear turntable 23, and the motor 26 is a stepping motor. The gear 27 is meshed with the gear rotating disk 23. It should be noted that the number of pairs of the coil winding assembly 25 and the strong magnet assembly 24 can be designed by those skilled in the art according to the power regulation requirements, and the present invention does not limit this.

[0033] The coil winding assembly 24 and the motor 24 are both controlled by a constant power controller. According to the target power control value, the constant power controller controls the power supply to supply power to the coil winding assembly 24, and according to the change of the current passing through the coil winding assembly 24, changes the damping of the damping disk 2 to achieve power regulation; according to the target power control value, the constant power controller controls the motor 26 to drive the gear 27 to drive the gear turntable 23 to rotate, thereby driving the strong magnet assembly 24 connected to the gear turntable 23 to move to the target position, and changes the damping of the damping disk 2 to achieve power regulation. In the embodiment of the present invention, the constant power controller and the power supply are not shown in the figure. Those skilled in the art can set them on the damper as needed, or they can be set as external devices outside the damper. The scheme of the present invention does not make specific limitations on this.

[0034] By using the constant power damper provided in the embodiment of the present invention, the power can be adjusted over a wide range by adjusting the position of the strong magnet assembly according to the target power control value. At the same time, combined with the power supply current of the coil winding assembly, the power can be accurately adjusted in real time and quickly. The combination of the two can accurately control the output of constant power.

[0035] The gear turntable 23 is circular, and is provided with rotating teeth 231 meshing with the gear 27 along its outer circumferential surface, four arc-shaped slide grooves 232, two limiting holes 233 and an axial hole 234 provided on the surface. The strong magnet assembly 24 includes a slider 241 and a strong magnet 242. The slider 241 is "T"-shaped, and a slider slide hole 2411 and a slider slide groove 2412 are provided on the longitudinal part of the "T" shape, and four rectangular grooves 2413 are provided on the transverse part. A strong magnet 242 is fixed in each rectangular groove 2413, and the strong magnet 242 is placed and fixed in the rectangular groove 2413 in such a way that the S / N poles are alternately facing outward. The slider slide hole 2411 is aligned with the slide groove 232 of the gear turntable 23, and is connected by a sliding bearing. At the same time, the slider slide groove 2412 is passed through the slide groove fixing sleeve and fixed to the front plate 21 and the bottom plate 22. When the gear turntable 23 rotates, the sliding bearing slides in the arc-shaped sliding groove 232 , so that the strong magnet 242 fixed on the slider 241 performs radial reciprocating motion relative to the center of the bottom plate 22 .

[0036] Please see Fig.10 Fig.11 , which is a schematic diagram of the strong magnet moving to the first position and the second position respectively by radial reciprocating motion relative to the center of the bottom plate. The first position and the second position are the two extreme positions of the strong magnet 242 that can be moved by rotating the gear turntable 23. When the strong magnet 242 moves to the first position, that is, the closest to the center of the bottom plate 22, the damping applied by the damping disk 2 to the metal flywheel 1 is relatively small; when the strong magnet 242 moves to the second position, that is, the farthest from the center of the bottom plate 22, the damping applied by the damping disk 2 to the metal flywheel 1 is relatively large. By adjusting the moving position of the strong magnet 242, the power can be adjusted over a wide range.

[0037] Please continue to see Figures 1 to 11 , a limit detector 28 and a flange 29 are also provided on the front plate 21. One end of the flange 29 is fixed on the front plate 21, and the other end passes through the axial hole 234 of the gear turntable 23 and is coaxially inserted into the metal flywheel 1. The motor 26 drives the gear 27 to drive the gear turntable 23, and the gear turntable 23 rotates around the axial hole 234. The limit detector 28 is an infrared sensor device, which is set to two corresponding limit holes 233, fixed to the front plate 21, and passes through the perforation of the front plate 21, close to the gear turntable 23. The limit detector 28 detects the limit hole 233 to detect whether the gear turntable 23 has rotated to the limit position marked by the limit hole 233, and feeds back to the constant power controller, that is, 10 and Fig.11As shown, when the strong magnet 242 moves to the first position and the second position respectively by radial reciprocating motion relative to the center of the bottom plate 22. The coil winding assembly 25 includes an electromagnet silicon steel sheet 251 and a coil winding 252. The electromagnet silicon steel sheet 251 is arranged at a rectangular notch of the bottom plate 22, and is provided with a accommodating space, and the coil winding 252 is placed in the accommodating space on the electromagnet silicon steel sheet 251. The position where the electromagnet silicon steel sheet 251 is arranged on the bottom plate 22 should not interfere with the position of the strong magnet assembly 24. The coil winding 252 is connected to a constant power controller and is controlled by the constant power controller. The power is adjusted by the size of the current supplied. In the embodiment of the present invention, the coil winding 252 is adjusted with a small current, so as to achieve a fast and real-time power adjustment effect.

[0038] The damping disc 2 is coaxially installed on the flywheel bracket aa through the flywheel shaft bb with the metal flywheel 1, and the damping disc 2 is also connected to a tension sensor 210. One end of the tension sensor 210 is connected and fixed to the damping disc 2, and the other end is connected and fixed to the flywheel bracket aa. According to the principle that the action force is equal to the reaction force, the resistance of the damping disc 2 to the metal flywheel 1 is equal to the force applied by the damping disc 2 to the tension sensor 210. The tension value detected by the tension sensor 210, combined with the rotational speed value of the metal flywheel 1, can be used to calculate the current output power value. It should be noted that for those skilled in the art, it is conventional to obtain the rotational speed value of the metal flywheel. Generally, the rotational speed of the metal flywheel can be directly detected by a rotational speed detector, or the rotational speed of the metal flywheel can be indirectly detected. For example, when the damper is used in a power car, the rotational speed of the driving wheel that drives the metal flywheel is usually detected as the rotational speed value of the metal flywheel.

[0039] The present invention utilizes the principle that action force and reaction force are equal. The resistance of the damping disk 2 to the metal flywheel 1 is equal to the force applied by the damping disk 2 to the tension sensor 210. The output power of the damper can be calculated quickly and accurately through the tension value detected by the tension sensor 210 and the rotational speed value of the metal flywheel 1, thereby accurately adjusting and controlling the damper to output constant power.

[0040] An interface PCB board 211 is also provided on the front plate 21 of the damping disk 2. The coil winding assembly 25, the motor 26, the limit detector 28, and the tension sensor 210 are all connected to the interface PCB board 211, and the interface PCB board is connected to the constant power controller. During power regulation, the constant power controller receives the detection signals fed back by the limit detector 28 and the tension sensor 210 through the PCB board 211, and sends control signals to the coil winding assembly 25 and the motor 26.

[0041] The constant power electromagnetic damper provided by the present invention has the following working principle: the constant power controller drives the gear 27 to drive the gear turntable 23 to rotate according to the input target power control value, the tension value fed back by the tension sensor 210, and the obtained speed value of the metal flywheel 1, and controls the motor 26 to drive the gear 27 to drive the gear turntable 23 to rotate, so that the strong magnet 242 in the strong magnet assembly 24 moves to a suitable position, and controls the power supply device to adjust the current input to the coil winding 252 in the coil winding assembly 25, so as to achieve constant power output. Among them, the output power calculation formula of the constant power damper provided by the present invention is as follows:

[0042] (1) V = D·π·R v

[0043] (2) p = F·V = F·D·π·R v

[0044] In the formula, V represents the linear velocity of the metal flywheel in meters per second; D represents the diameter of the metal flywheel in meters; R v It represents the rotation speed of the metal flywheel in revolutions per second; F represents the detection value of the tension sensor in Newton; P represents the output power of the constant power damper in watts.

[0045] The following two optional constant power adjustment processes provided by the constant power damper according to the solution of the present invention are described as examples:

[0046] An optional constant power regulation process is: calculate the target tension value that the tension sensor should detect (i.e., the damping that the damping disk should provide) under the target power control value and the current speed of the metal flywheel; control the strong magnet assembly to move to a suitable position so that the detection value of the tension sensor reaches the target tension value, and adjust the power quickly and accurately in real time by adjusting the small current of the input coil winding assembly, thereby achieving constant power output.

[0047] An optional constant power regulation process is: calculate the target tension value (i.e., the damping that the damping disk should provide) that the tension sensor should detect under the target power control value and the current speed of the metal flywheel; adjust the current of the input coil winding assembly, and calculate whether the current detection value of the tension sensor can reach the target tension value. If not, reduce the current of the input coil winding assembly, and move the strong magnet assembly to a suitable position at the same time so that the current detection value of the tension sensor reaches the target tension value, and end the regulation; if yes, maintain the current size of the input coil winding assembly, and end the regulation.

[0048] In the existing design, a wide range of power regulation can be achieved by adjusting the movement of a strong magnet assembly alone, but the disadvantage is that the motor adjustment speed is slow and cannot be tracked in real time; a single adjustment of the input current of the coil winding assembly can achieve rapid regulation, but the disadvantage is that the coil is not suitable for long-term operation with large current, generates large heat, and has a limited adjustment range. The damper provided by the scheme of the present invention realizes a combination of the two adjustment methods, which can not only adjust the power over a wide range, but also accurately adjust the power in real time and quickly, so that the constant power control output can be accurately performed.

[0049] Please see Fig.12 The power bike provided by the embodiment of the present invention includes a constant power damper 10, a constant power controller 11, a frame body 12, a driving wheel 13, a speed detector 14, a seat 15, an armrest 16, a meter head 17, a belt 18, a heart rate meter 19 and a lifting push rod motor 110.

[0050] The seat 15 is fixed to the middle of the frame body 12 , the driving wheel 13 and the constant power damper 10 are fixed to both ends of the seat 15 on the frame body 12 , and the armrest 16 and the meter head 17 are arranged on one end of the frame body 12 near the driving wheel 13 .

[0051] The outer peripheral surface of the driving wheel 13 is connected to the outer peripheral surface of the metal flywheel in the constant power damper 10 through the belt 18. When the pedal of the driving wheel 13 is stepped on, the metal flywheel is driven to rotate through the belt 18, and the rotation speeds of the metal flywheel and the driving wheel 13 are the same. The speed detector 14 fixed on the frame body 12 is connected to the driving wheel 13, and the rotation speed of the metal flywheel is obtained by detecting the rotation speed of the driving wheel 13, and the information is fed back to the constant power controller 11. The heart rate meter, the meter head 17 and the speed detector 14 are connected to the constant power controller 11 set on the frame body 12. The heart rate meter 19 detects the heart rate of the tester and feeds it back to the constant power controller 11, and the meter head 17 provides control interaction and status display functions.

[0052] The frame body 12 includes a foldable front frame 121 and a support frame 122 for fixing the seat 15. A folding button is provided on the front frame 121. By rotating and releasing the folding button, the front frame 121 can be folded inward, thereby miniaturizing the frame body 12. A lifting push rod motor 110 controlled by the constant power controller 11 is provided in the support frame 122 to drive the lifting seat 15. The height of the seat 15 can be adjusted through the telescopic movement of the lifting push rod motor 110. At the same time, the seat 15 can also be adjusted forward and backward through the forward and backward adjustment knob provided on the seat 15.

[0053] The tester steps on the pedal on the frame body 12, and the driving wheel 13 drives the metal flywheel in the constant power damper 11 to rotate. During the test, the constant power controller 11 adjusts the movement of the strong magnet component in the constant power damper 11 and the current change of the coil winding component according to the target power control value output by the meter 17, combined with the tension value fed back by the tension sensor, and the speed value of the metal flywheel obtained, so as to achieve the stable output of the power vehicle at the target power. For the specific power output realization principle, please refer to the above description, which will not be repeated here.

[0054] The constant power damper used in the power car provided by the present invention can accurately perform dynamic damping adjustment to achieve constant power control output, so that the power car can stably output constant power.

[0055] In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description of the implementation and specific embodiments of the present invention; however, this is not the only form of implementing or using the specific embodiments of the present invention. The implementation covers the features of multiple specific embodiments and the method steps and sequences used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences.

Claims

1. A constant power damper, comprising a metal flywheel and a damping disc arranged on the inner circumference of the metal flywheel and coaxially connected thereto, both of which are fixed on a flywheel bracket, characterized in that: The damping disk comprises a front plate and a bottom plate connected coaxially, a gear turntable clamped between the front plate and the bottom plate, and a strong magnet assembly connected to the gear turntable; at least one pair of coil winding assemblies are symmetrically arranged on the bottom plate at the periphery of the gear turntable, and at least one pair of the strong magnet assemblies are symmetrically arranged between the coil winding assemblies; the coil winding assembly is controlled by a constant power controller and receives power according to a target power control value; A motor and a gear connected to the motor are provided on the front panel, and the gear is meshed with the gear of the gear turntable; the motor is controlled by the constant power controller, and drives the gear to drive the gear turntable to rotate according to the target power control value, so that the strong magnet assembly moves to the target position.

2. The constant power damper according to claim 1, characterized in that: The gear turntable includes a rotating tooth arranged on the outer peripheral surface and meshing with the gear, and a sliding groove arranged on the surface; the strong magnet assembly includes a slider and a strong magnet; The slider is in a "T" shape, with a slider sliding hole and a slider sliding groove on the longitudinal part of the "T" shape, and at least one rectangular groove on the transverse part; the strong magnet is placed in the rectangular groove; the slider sliding hole is aligned with the sliding groove and is connected through a sliding bearing; a sliding groove fixing sleeve passes through the slider sliding groove and is fixed to the front plate and the bottom plate; when the gear turntable rotates, the sliding bearing slides in the sliding groove, so that the strong magnet placed on the slider makes radial reciprocating motion relative to the center of the bottom plate.

3. The constant power damper according to claim 1 or 2, characterized in that: A limit detector is arranged on the front plate, and two limit holes are arranged on the gear turntable; the limit detector is used to detect whether the gear turntable has rotated to the limit position by detecting the limit holes, and feed back to the constant power controller.

4. The constant power damper according to claim 1, characterized in that: The coil winding assembly includes an electromagnet silicon steel sheet and a coil winding arranged on the electromagnet silicon steel sheet and connected to the constant power controller; the electromagnet silicon steel sheet is arranged on the bottom plate and does not interfere with the position of the strong magnet assembly.

5. The constant power damper according to claim 3, characterized in that: It also includes a tension sensor, one end of which is connected to the flywheel bracket, and the other end is connected to the damping disk, so as to detect the resistance generated by the damping disk to the rotating metal flywheel and feed it back to the constant power controller.

6. The constant power damper according to claim 5, characterized in that: It also includes an interface PCB board arranged on the front panel and connected to the constant power controller, and the coil winding assembly, the motor, the limit detector and the tension sensor are all connected to the interface PCB board.

7. The constant power damper according to claim 1, characterized in that: It also includes a flange, which is fixed to the front plate and coaxially connected to the metal flywheel.

8. A power car, characterized in that: It comprises the constant power damper as claimed in any one of claims 1 to 7, a frame body, a driving wheel, a speed detector, a constant power controller, a seat, an armrest, a meter and a belt; The seat is fixed at the middle part of the frame body, the driving wheel and the constant power damper are fixed at both ends of the seat on the frame body, and the armrest and the meter are arranged on the end of the frame body close to the driving wheel; the outer peripheral surface of the driving wheel is connected to the outer peripheral surface of the metal flywheel through the belt; the speed detector fixed on the frame body is connected to the driving wheel to detect the speed of the driving wheel and feed it back to the constant power controller; the meter and the speed detector are connected to the constant power controller arranged on the frame body.

9. The power vehicle according to claim 8, characterized in that: The vehicle also includes a heart rate measuring device which is arranged on the frame body and connected to the constant power controller, and is used for detecting the heart rate of the tester and feeding back the heart rate to the constant power controller.

10. The power vehicle according to claim 8 or 9, characterized in that: The frame body comprises a foldable front frame and a support frame for fixing the seat, and a lifting push rod motor controlled by the constant power controller to drive the lifting of the seat is arranged in the support frame.

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