CN211132855U - Buffering adjusting device, treadmill base and treadmill - Google Patents

Abstract

The application provides a buffering adjusting device, treadmill base and treadmill, this buffering adjusting device sets up in the frame of treadmill, and buffering adjusting device includes: the elastic assembly comprises a support and an elastic piece, the support is rotatably arranged on the rack, one end of the elastic piece is connected with the support, and the other end of the elastic piece is connected with the rack; one end of the bracket component is connected with the frame, the bracket component is arranged on the elastic component, and the bracket component can move relative to the support so as to adjust the supporting position of the bracket component on the support. Through the technical scheme that this application provided, can solve the poor problem of buffering adjustment effect among the prior art.

Description

Buffering adjusting device, treadmill base and treadmill

Technical Field

The application relates to the technical field of treadmills, in particular to a buffering and adjusting device, a treadmill base and a treadmill.

Background

At present, in order to enable the running machine to meet the requirements of people with different weights on buffering, an adjustable buffering device is arranged on the running machine. The adjustable buffer device mainly comprises an elastic piece, a buffer adjusting mechanism and a buffer adjusting mechanism, wherein the elastic piece is manually replaced by a small number of elastic pieces with different hardness, the buffer adjusting mechanism is realized by changing the deformation of the elastic pieces under unit acting force, the supporting position of the small number of elastic pieces is manually adjusted, and the buffer adjusting mechanism is realized by changing the acting point of the elastic pieces.

However, in the prior art, the first method is adopted, the adjusting steps are complex, precise adjustment cannot be realized due to the fact that only a few elastic parts can be replaced, and the adjusting effect is poor. Therefore, the prior art has the problem of poor buffer adjustment effect.

SUMMERY OF THE UTILITY MODEL

The application provides a buffering adjusting device, treadmill base and treadmill to solve the poor problem of buffering adjustment effect among the prior art.

According to one aspect of the present application, there is provided a cushioning adjustment device provided on a frame of a treadmill, the cushioning adjustment device including: the elastic assembly comprises a support and an elastic piece, the support is rotatably arranged on the rack, one end of the elastic piece is connected with the support, and the other end of the elastic piece is connected with the rack; one end of the bracket component is connected with the frame, the bracket component is arranged on the elastic component, and the bracket component can move relative to the support so as to adjust the supporting position of the bracket component on the support.

Furthermore, the buffering adjusting device further comprises an elastic piece seat body, the elastic piece seat body is arranged on the rack and located below the support, one end of the elastic piece is connected with the bottom of the support, and the other end of the elastic piece is connected with the elastic piece seat body.

Furthermore, the elastic component further comprises a first rotating shaft, the first rotating shaft is arranged on the rack, one end of the support is hinged to the first rotating shaft, and the elastic component and the first rotating shaft are arranged at intervals.

Further, the bracket assembly includes: a frame body; the supporting block is arranged on the frame body and corresponds to the support; the one end and the frame of drive division are connected, and the other end and the support body of drive division are connected, and the drive division is used for driving the support body and removes on the support to adjust the support position of supporting shoe on the support.

Furthermore, a plurality of elastic components are arranged on the rack, a plurality of supporting blocks are arranged on the rack body, and the supporting blocks and the supporting seats of the elastic components are arranged in a one-to-one correspondence mode.

Furthermore, the buffering adjusting device further comprises a board running assembly, one end of the board running assembly is connected with the rack, the board running assembly is connected with the support assembly, and the board running assembly is located above the support assembly.

Further, the running board assembly comprises: one end of the running plate is hinged with the rack, and the running plate is arranged above the support assembly; and the limiting assembly is positioned between the running plate and the rack and is used for limiting the running plate to rotate relative to the rack.

Further, the damping adjustment device further includes: the detection assembly is used for detecting the state parameters of the treadmill; and the control assembly controls the support assembly to move relative to the support according to the state parameters detected by the detection assembly.

According to another aspect of the present application, there is provided a treadmill base including a cushioning adjustment device provided above.

According to yet another aspect of the present application, a treadmill is provided that includes a treadmill base provided above.

By applying the technical scheme, the buffering adjusting device comprises an elastic component and a bracket component. Wherein, elastic component includes support and elastic component, and the support rotationally sets up in the frame, and the one end and the support of elastic component are connected, and the other end and the frame of elastic component are connected. Specifically, one end of the bracket component is connected with the frame, and the bracket component is arranged on the elastic component. Through making the relative support of bracket component remove, can adjust the support position of bracket component on the support, so can realize the regulation to the support position of elastic component. And, because the support position of bracket component on the support changes, utilize lever principle, under unit effort, the deflection of elastic component can change. By adopting the structure, the supporting position and the deformation of the elastic piece can be adjusted simultaneously, so that the effect of buffer adjustment can be improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a damping adjustment device provided in an embodiment of the present application;

FIG. 2 shows a schematic structural view of the elastomeric component of FIG. 1;

fig. 3 shows a schematic view of the assembly of the elastic assembly of fig. 1 with a frame body;

FIG. 4 shows a partial enlarged view at A in FIG. 3;

FIG. 5 shows a schematic structural view of the bracket assembly of FIG. 1;

fig. 6 illustrates an exploded view of a running board assembly and a rack provided in accordance with an embodiment of the present application;

fig. 7 illustrates yet another exploded view of a running board assembly and a rack provided in accordance with an embodiment of the present application;

FIG. 8 illustrates a structural schematic view of a carriage assembly provided in accordance with an embodiment of the present application in a first position;

figure 9 illustrates a structural schematic view of a cradle assembly provided in accordance with an embodiment of the present application in a second position.

Wherein the figures include the following reference numerals:

10. an elastic component; 11. a support; 111. a slide rail; 12. an elastic member; 13. a first rotating shaft;

20. a bracket assembly; 21. a frame body; 22. a support block; 23. a drive section;

30. an elastic member base;

40. a deck assembly; 41. running a board;

F. the impact force on the running board, the moment arm between the supporting block and the elastic element, and the distance from L the supporting block to the third rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 to 7, the embodiment of the present application provides a buffering adjustment device, the buffering adjustment device is disposed on a frame of a treadmill, and the buffering adjustment device is used for adjusting a buffering effect of the treadmill, so that the treadmill can meet requirements of people with different weights on buffering. Specifically, the damping adjustment device includes an elastic assembly 10 and a bracket assembly 20. The elastic assembly 10 comprises a support 11 and an elastic member 12, the support 11 is rotatably arranged on the frame, one end of the elastic member 12 is connected with the support 11, and the other end of the elastic member 12 is connected with the frame. In this embodiment, one end of the bracket assembly 20 is connected to the frame, the bracket assembly 20 is disposed on the elastic assembly 10, and the bracket assembly 20 can move relative to the support 11 to adjust the supporting position of the bracket assembly 20 on the support 11. Wherein the elastic member 12 may generate an elastic force by compressive deformation, or the elastic member 12 may generate an elastic force by tensile deformation. Specifically, the elastic member 12 includes an elastic block and a spring. Of course, the elastic member 12 may have other forms, which are not limited in the embodiments of the present application.

With the damping adjustment device provided in this embodiment, when the damping effect of the treadmill needs to be adjusted, the supporting position of the bracket assembly 20 on the support 11 can be adjusted by moving the bracket assembly 20 relative to the support 11, so that the supporting position of the elastic member 12 can be adjusted. Also, since the supporting position of the bracket assembly 20 on the support 11 is changed, the amount of deformation of the elastic member is changed per unit force by using the lever principle. With the above structure, the supporting position and the deformation amount of the elastic member 12 can be adjusted at the same time, so that the effect of cushioning adjustment can be improved. In addition, the supporting position and the deformation of the elastic element 12 are adjusted by the movement of the bracket assembly 20 and the lever principle, so that the adjusting device also has the advantages of convenience in adjustment and high adjusting accuracy.

In the present embodiment, considering the elastic member 12 as a whole, by adjusting the supporting position of the bracket assembly 20 on the support 11, the amount of deformation of the elastic member 12 under a unit force is changed by using the principle of leverage, which is equivalent to that the elastic modulus of the elastic member 12 is changed accordingly.

In order to fix the elastic member 12, the damping adjustment device further includes an elastic member housing 30. The elastic element seat 30 is disposed on the frame and below the support 11, one end of the elastic element 12 is connected to the bottom of the support 11, and the other end of the elastic element 12 is connected to the elastic element seat 30. In the present embodiment, the elastic member 12 generates an elastic force by compressive deformation. Specifically, the cross sectional shape of elastic component 12 is circular, so can guarantee the even degree that the elastic component warp to can promote buffering stability and buffering effect.

In this embodiment, the upper end of the elastic member 12 is provided with a threaded hole, the support 11 is correspondingly provided with an avoiding hole, and the first screw passes through the avoiding hole to be connected with the threaded hole at the upper end of the elastic member 12, so as to realize the connection between the elastic member 12 and the support 11. In order to avoid that the first screw affects other components, the first screw comprises a countersunk head screw. Wherein, the lower end or the bottom of the elastic member 12 is provided with a second screw, and the second screw can be integrally formed with the elastic member 12. Specifically, the elastic member 12 may be fixed to the elastic member holder 30 by a second screw and a nut.

Wherein, the elastic component 10 further comprises a first rotating shaft 13, and the first rotating shaft 13 is arranged on the frame. Specifically, one end of the support 11 is hinged to the first rotating shaft 13, and the elastic member 12 is disposed at a distance from the first rotating shaft 13. In this embodiment, the end of the support 11 is provided with a support rotating sleeve, and the first rotating shaft 13 is inserted into the support rotating sleeve and connected with the frame to realize the rotatable connection between the support 11 and the frame. Moreover, by arranging the elastic element 12 and the first rotating shaft 13 at an interval, when the supporting position of the bracket assembly 20 on the support 11 is changed, the deformation of the elastic element 12 can be successfully adjusted by using the lever principle, so that the effective support of the elastic element 12 on the support 11 can be ensured.

In this embodiment, the bracket assembly 20 includes a bracket body 21, a supporting block 22, and a driving part 23. Wherein, the supporting block 22 is disposed on the frame body 21, and the supporting block 22 is disposed corresponding to the support 11. When the bracket assembly 20 is in contact with the support 11, the support block 22 abuts the support 11. By connecting one end of the driving part 23 with the frame and the other end of the driving part 23 with the frame body 21, the frame body 21 can be driven by the driving part 23 to move relative to the frame so as to adjust the supporting position of the supporting block 22 on the supporting seat 11. Wherein, the driving part 23 comprises a structure of a driving motor and a gear matched with each other and an electric push rod.

In the present embodiment, the driving portion 23 is an electric push rod. Wherein, one end of the electric push rod is hinged with the frame, and the other end of the electric push rod is connected with the frame body 21. Specifically, the bracket assembly 20 further includes a second rotating shaft, the second rotating shaft penetrates through one end of the electric push rod and is connected with the frame, and the other end of the electric push rod is connected with the frame body 21 through a fastener.

In order to improve the smoothness of the movement of the bracket assembly 20 on the support 11, the support 11 is provided with a slide rail 111, the slide rail 111 extends along the length direction of the rack, and the support block 22 is correspondingly arranged in the slide rail 111. In the present embodiment, the cross-sectional shape of the slide rail 111 is a U-shaped structure, so that the supporting block 22 can only move along the extending direction of the slide rail 111, and the supporting block 22 can be prevented from being separated from the side of the slide rail 111.

Specifically, a plurality of elastic assemblies 10 are arranged on the rack, a plurality of supporting blocks 22 are arranged on the rack body 21, and the plurality of supporting blocks 22 are arranged in one-to-one correspondence with the supporting seats 11 of the plurality of elastic assemblies 10. Adopt above-mentioned structure, can utilize a plurality of elastic component 10 to support bracket component 20 simultaneously, can further promote the homogeneity of buffering, promote buffering effect. In this embodiment, four elastic assemblies 10 are disposed on the frame, and four supporting blocks 22 are disposed on the frame body 21.

As shown in fig. 6 and 7, the buffering adjustment device further includes a running board assembly 40, one end of the running board assembly 40 is connected to the frame, the running board assembly 40 is connected to the support assembly 20, and the running board assembly 40 is located above the support assembly 20. Specifically, one end of the running board assembly 40 is hinged with the frame, and the running board assembly 40 can rotate relative to the frame.

Specifically, the running board assembly 40 includes a running board 41 and a stop assembly. Wherein, one end of the running plate 41 is hinged with the frame, and the running plate 41 is arranged above the bracket component 20. Specifically, run board assembly 40 and still include third pivot and bearing frame, and the bearing frame setting is in the tip both sides of running board 41, and the third pivot is worn to establish in the bearing frame and is connected with the frame. In order to prevent the running board 41 from being separated from the rack, a limiting component is arranged between the running board 41 and the rack, and the running board 41 can be limited to rotate relative to the rack by the limiting component. Wherein, spacing subassembly includes but not limited to spacing boss isotructure. And, can set up spacing subassembly on running board 41, also can set up spacing subassembly in the frame, perhaps set up spacing subassembly simultaneously on running board 41 and frame.

In order to realize intelligent self-adaptive buffer adjustment, the buffer adjustment device further comprises a detection component and a control component, wherein the detection component is used for detecting the state parameter of the treadmill, and the control component controls the support component 20 to move relative to the support 11 according to the state parameter detected by the detection component. The state parameters of the treadmill include the position parameters of the bracket assembly 20, the deformation of the elastic member 12, and the relative position of the running board assembly 40 and the frame.

In this embodiment, the detecting assembly detects the position parameter of the carriage assembly 20, so as to improve the accuracy of the movement of the carriage assembly 20 on the support 11. The deformation of the elastic member 12 and/or the relative position of the running board assembly 40 and the frame are detected by the detecting assembly, and the supporting position of the bracket assembly 20 on the support 11 can be adjusted according to the deformation of the elastic member 12 and the relative position of the running board assembly 40 and the frame, so as to adjust the buffering effect.

Specifically, the detecting assembly includes a first position sensor, which can be disposed at an end of the support 11 away from the support assembly 20, and the position of the support assembly 20 can be accurately detected by the first position sensor, so as to avoid the support assembly 20 from being separated from the support 11, and avoid the support assembly 20 from colliding with other components, so as to improve the accuracy of the movement of the support assembly 20 on the support 11.

Specifically, the detecting assembly further includes a second position sensor for detecting a relative position of the running board assembly 40 and the frame, and a pressure sensor for detecting a deformation amount of the elastic member 12. When a person runs on the running board 41, the second position sensor detects that the downward movement of the running board 41 is too large or too small, or the pressure sensor detects that the deformation of the elastic element 12 is too large or too small, the control module controls the support assembly 20 to move relative to the support 11 according to the detected state parameters, so as to adjust the deformation of the elastic element under the same acting force. Specifically, when the weight of the person is too large, the detection assembly detects that the downward movement amount of the running board 41 is too large or the deformation amount of the elastic member 12 is too large, the control assembly controls the support assembly 20 to move relative to the support 11, and the elastic modulus of the elastic member can be changed by changing the supporting position of the support assembly 20 on the support 11, so that the buffering effect of automatically adjusting the treadmill for persons with different weights is realized.

Through the device that this embodiment provided, promote supporting shoe 22 on the bracket component 20 through the push rod motor and move along running direction back-and-forth, can adjust the support position of elastic component 12 to running board 41, the removal of the support position of elastic component 12 has also directly changed the elasticity modulus of elastic component 12 simultaneously, realizes the dual regulation of support position and elasticity modulus, has the advantage that the regulation is convenient, accurate and the effect is obvious. Meanwhile, a corresponding sensor can be additionally arranged on the elastic part 12 to control the motion of the push rod motor, so that intelligent self-adaptive buffer adjustment is realized.

The working principle of the device provided by the embodiment is as follows:

(1) the running plate 41 is hinged with the frame through a third rotating shaft, the running plate 41 is flatly placed on the supporting block 22 of the bracket component 20, and the front end of the running plate 41 is provided with a limiting structure, so that the running plate 41 can only rotate around the third rotating shaft in the counterclockwise direction;

(2) the support 11 is hinged with the frame through a first rotating shaft 13, and the support 11 can rotate around the first rotating shaft 13 when the elastic element 12 generates elastic deformation;

(3) when a person runs on the running board 41, the impact force F applied to the running board 41 is transmitted to the elastic member 12 of the elastic member 12 through the supporting blocks 22 of the bracket assembly 20, and the elastic member 12 elastically deforms to absorb the impact energy, thereby achieving the buffering function.

As shown in fig. 8, when the bracket assembly 20 is in the first position, the supporting position of the supporting block 22 is opposite to the position of the elastic element 12, the impact force F received by the running plate 41 is directly transmitted to the elastic element 12, the distance L from the supporting block 22 to the third rotating shaft is the largest (the arm of force of F is the smallest, the force transmitted to the supporting block 22 is the smallest), and the force finally transmitted to the elastic element 12 under the same F action is the smallest, the elastic deformation of the elastic element 12 is the smallest, and the buffering effect is the smallest.

As shown in fig. 9, when the bracket assembly 20 moves backward to the second position under the pushing of the push rod motor, the supporting block 22 and the elastic element 12 generate a certain distance to form a force arm b, the force transmitted from the supporting block 22 to the elastic element 12 under the action of the force arm b is linearly increased, the elastic deformation of the elastic element 12 is increased (which is equivalent to the linear decrease of the elastic modulus of the elastic element 12, and becomes softer), meanwhile, the distance L from the supporting block 22 to the third rotation shaft is decreased, the force arm of F is increased, the force transmitted to the supporting block 22 is also increased, the force finally transmitted to the elastic element 12 under the same force F is increased, the elastic deformation of the elastic element 12 is increased, and the buffering effect is enhanced.

Therefore, through the telescopic adjustment of the push rod motor, the elastic modulus of the elastic element 12 can be changed linearly, and simultaneously, the acting point of the supporting block 22 on the running plate is changed to change the stressed elastic deformation degree of the elastic element 12, thereby achieving the effect of adjusting the buffer. The buffer adjusting device can enable the buffer adjusting effect to be obvious and accurate, has strong adaptability and is convenient to operate. Meanwhile, a sensor is arranged on the elastic part 12 (or other positions), the size of the board running impact force F collected by the sensor is fed back to the control assembly to drive the push rod motor, and intelligent self-adaptive buffer adjustment is realized.

Yet another embodiment of the present application provides a treadmill base that includes a cushioning adjustment device as provided above. By providing the cushioning adjusting device on the treadmill base, the supporting position and the modulus of elasticity of the elastic member 12 can be adjusted at the same time, so that the cushioning adjusting effect can be improved.

Another embodiment of the present application provides a treadmill including a treadmill base provided as described above. By providing the treadmill base on the treadmill, the supporting position and the elastic modulus of the elastic member 12 can be adjusted at the same time, so that the effect of the cushioning adjustment can be improved.

Through the device that this embodiment provided, according to lever principle, adjust the support position through the push rod motor, can make the elastic modulus of elastic component be linear regulation, have that the control range is big, the precision is high, strong adaptability and adjust the obvious advantage of effect, combine sensing technology simultaneously, can realize intelligent self-adaptation buffering and adjust.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A cushioning adjustment device disposed on a frame of a treadmill, the cushioning adjustment device comprising:

the elastic assembly (10) comprises a support (11) and an elastic piece (12), the support (11) is rotatably arranged on the rack, one end of the elastic piece (12) is connected with the support (11), and the other end of the elastic piece (12) is connected with the rack;

the bracket component (20), one end of the bracket component (20) is connected with the frame, the bracket component (20) is arranged on the elastic component (10), and the bracket component (20) can move relative to the support (11) so as to adjust the supporting position of the bracket component (20) on the support (11).

2. The damping adjustment device according to claim 1, further comprising an elastic member seat (30), wherein the elastic member seat (30) is disposed on the frame and below the support (11), one end of the elastic member (12) is connected to the bottom of the support (11), and the other end of the elastic member (12) is connected to the elastic member seat (30).

3. A damping adjustment device according to claim 1, characterized in that the elastic assembly (10) further comprises a first rotating shaft (13), the first rotating shaft (13) is arranged on the frame, one end of the support (11) is hinged with the first rotating shaft (13), and the elastic member (12) is arranged at a distance from the first rotating shaft (13).

4. A cushioning adjustment device according to claim 1, characterized in that said carriage assembly (20) comprises:

a frame body (21);

the supporting block (22) is arranged on the frame body (21), and the supporting block (22) is arranged corresponding to the support seat (11);

the support device comprises a driving part (23), one end of the driving part (23) is connected with the rack, the other end of the driving part (23) is connected with the support body (21), and the driving part (23) is used for driving the support body (21) to move on the support (11) so as to adjust the supporting position of the supporting block (22) on the support (11).

5. A damping adjustment device according to claim 4, characterized in that a plurality of said elastic elements (10) are arranged on said frame, a plurality of said support blocks (22) are arranged on said frame body (21), and a plurality of said support blocks (22) are arranged in one-to-one correspondence with the supports (11) of a plurality of said elastic elements (10).

6. The cushioning adjustment device according to claim 1, further comprising a running board assembly (40), wherein one end of the running board assembly (40) is connected to the frame, the running board assembly (40) is connected to the carriage assembly (20), and the running board assembly (40) is located above the carriage assembly (20).

7. A damping adjustment device according to claim 6, characterized in that the running board assembly (40) comprises:

the running plate (41), one end of the running plate (41) is hinged with the frame, and the running plate (41) is arranged above the bracket assembly (20);

the limiting assembly is positioned between the running plate (41) and the rack and used for limiting the running plate (41) to rotate relative to the rack.

8. The cushion adjustment apparatus according to claim 1, further comprising:

the detection assembly is used for detecting the state parameters of the treadmill;

the control assembly controls the bracket assembly (20) to move relative to the support (11) according to the state parameters detected by the detection assembly.

9. A treadmill base comprising the cushioning modulation device of any of claims 1-8.

10. A treadmill, characterized in that the treadmill comprises the treadmill base of claim 9.

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