A damping friction pair and a damping bearing

Abstract

The present invention provides a damping friction pair and a damping bearing, belonging to the field of bearings. The friction pair includes a rotating body, a pressing mechanism and a damping plate. The rotating body is in contact with the damping plate, and the friction between the rotating body and the damping plate enables the friction pair to have a damping effect. The pressing mechanism is used to make the rotating body and the damping plate closely contact. A medium cavity is provided between the rotating body and the damping plate, and a damping medium is provided in the medium cavity. By adopting the damping friction pair and the damping bearing provided by the embodiments of the present invention, the problems of short service life and complex operation in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the field of bearings, and particularly to a damping friction pair and a damping bearing. Background Art

[0002] A bearing is an important component in modern mechanical equipment. Its main function is to support a mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotational accuracy. However, in some usage scenarios, it is not only necessary to provide a supporting effect on the rotating body, but also necessary to reduce the rotational speed of the rotating body so that the rotating body rotates more stably or can stay stably at any rotation angle.

[0003] In the prior art, a damping bearing usually sets a damping plate to rub against the rotating body to reduce the rotational speed of the rotating body. After long-term friction between the rotating body and the damping plate, it is easy to cause the damping plate to fail, making it difficult to continue reducing the speed of the rotating body, resulting in the scrapping of the damping plate and the need for regular replacement.

[0004] The damping bearings in the prior art usually only set a damping plate to rub against the rotating body, resulting in relatively short service lives of the rotating body and the damping plate. During use, the damping plate needs to be frequently replaced, and even the rotating body may be scrapped, leading to the need for frequent replacement of components in the actual use of existing damping bearings and relatively complex operations. Summary of the Invention

[0005] Embodiments of the present invention provide a damping friction pair and a damping bearing, which can solve the problems of short service life and complex operation in the prior art. The technical solutions are as follows:

[0006] In a first aspect, a damping friction pair includes: a rotating body, a pressing mechanism, and a damping plate. The rotating body is in contact with the damping plate, and the friction between the rotating body and the damping plate gives the friction pair a damping effect.

[0007] The pressing mechanism is used to make the rotating body and the damping plate closely adjoin.

[0008] A medium cavity is provided between the rotating body and the damping plate, and a damping medium is provided in the medium cavity.

[0009] Optionally, the medium cavity is provided on the rotating body, and the opening of the medium cavity cooperates with the damping plate to make the damping medium contact the damping plate.

[0010] Optionally, the opening of the medium cavity gradually expands towards the damping plate to enable the damping medium to contact the damping plate more fully.

[0011] Optionally, the dielectric cavity includes a guiding wall disposed at the opening of the dielectric cavity. An included angle formed between the guiding wall and the damping plate has an opening facing the direction in which the guiding wall moves relative to the damping plate, and the included angle formed between the guiding wall and the damping plate is an acute angle.

[0012] Optionally, a plurality of the dielectric cavities are provided on the rotating body, and the plurality of dielectric cavities are evenly distributed on the rotating shaft of the rotating body.

[0013] Optionally, the damping medium is a highly viscous liquid or fixed particles.

[0014] In a second aspect, a damping bearing includes the aforementioned damping friction pair, the rotating body is an inner ring of the damping bearing, and the damping plate is an outer ring of the damping bearing.

[0015] Optionally, it further includes an end plate. A limiting platform is provided on the end plate, the pressing mechanism is a spring, the spring is sleeved on the limiting platform, and two ends of the spring are respectively abutted against the end plate and the rotating body.

[0016] Optionally, the spring is a conical spring that tapers from the end plate towards the rotating body.

[0017] Optionally, the rotating body is sleeved on the limiting platform.

[0018] Optionally, a sealing ring is provided on the limiting platform, and the sealing ring is disposed between the limiting platform and the rotating body.

[0019] Optionally, a turntable is provided on the rotating body, the damping plate is sleeved on the turntable, and is hinged to the rotating body through the turntable.

[0020] Optionally, it further includes a fixedly connected end cover and an outer core body. A cavity is formed between the end cover and the outer core body. The end plate, the spring, the rotating body, and the damping plate are all hollow rings, and the end plate, the spring, the rotating body, and the damping plate are sequentially disposed in the cavity.

[0021] Optionally, a first shaft hole is provided on the outer core body, and a first sealing band is sleeved on the turntable. The first sealing band is disposed between the turntable and the first shaft hole.

[0022] Optionally, an inner cavity of the outer core body is in interference fit with the damping plate.

[0023] Optionally, the turntable is in interference fit with the damping plate.

[0024] Optionally, an interference amount between the inner cavity of the outer core body and the damping plate is greater than an interference amount between the turntable and the damping plate, and the damping medium is blocked on a side of the damping plate away from the outer core body.

[0025] Optionally, a convex shaft is provided on the end plate, and a second shaft hole is provided on the end cover. The end plate is hinged to the end cover through the cooperation of the convex shaft and the second shaft hole.

[0026] Optionally, a second sealing band is sleeved on the convex shaft, and the second sealing band is arranged between the convex shaft and the second shaft hole.

[0027] Optionally, a shaft sleeve is provided on one side of the outer box body close to the end cover, and the shaft sleeve is in interference fit with the inner cavity of the end cover.

[0028] Optionally, the medium cavity is a cavity surrounded by the end cover, the end plate, the rotating body, the damping plate, and the outer core body. The rotating body is arranged in the cavity for agitating the damping medium.

[0029] Optionally, a locking block is further provided on the end plate, and a locking groove cooperating with the locking block is provided on the rotating body. The end plate and the rotating body are synchronously rotated through the cooperation of the locking block and the locking groove.

[0030] Optionally, an anti-slip block is integrally formed on the hollow annular inner ring of the rotating body.

[0031] The beneficial effects brought by the technical solutions provided by the embodiments of the present invention at least include:

[0032] A damping friction pair and a damping bearing provided by an embodiment of the present invention provide a pressing force on a rotating body through a pressing mechanism, so that the rotating body is pressed against the damping plate and friction occurs. By providing a medium cavity and arranging a damping medium in the medium cavity, when the rotating body rotates, the damping medium is agitated, thereby providing resistance to the rotation of the rotating body. During the process of reducing the speed of the rotating shaft, resistance is provided by arranging the medium cavity and the damping medium, thereby reducing the friction force between the rotating body and the damping plate, slowing down the wear of the damping plate and the rotating body, and improving the service life of the damping plate and the rotating body. It can effectively solve the problems of short service life and complex operation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 is a schematic diagram of the overall structure of the damping bearing provided by an embodiment of the present invention;

[0035] Figure 2 is a schematic side sectional view of the damping bearing provided by an embodiment of the present invention;

[0036] Figure 3 It is an exploded view of the overall structure of the damping bearing provided by an embodiment of the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the rotating body provided by an embodiment of the present invention.

[0038] In the figure: 1 - rotating body; 11 - turntable; 12 - first sealing band; 13 - locking groove; 14 - anti-slip block; 2 - pressing mechanism; 21 - spring; 3 - damping plate; 4 - medium cavity; 41 - guiding wall; 5 - end plate; 51 - limiting platform; 52 - sealing ring; 53 - convex shaft; 54 - second sealing band; 55 - locking block; 6 - end cover; 61 - second shaft hole; 7 - outer core body; 71 - first shaft hole; 72 - shaft sleeve. Specific embodiments

[0039] To make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] Figure 1 It is a schematic diagram of the overall structure of the damping bearing provided by an embodiment of the present invention; Figure 2 It is a schematic cross-sectional view of the side of the damping bearing provided by an embodiment of the present invention; Figure 3 It is an exploded view of the overall structure of the damping bearing provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the rotating body provided by an embodiment of the present invention. As Figures 1 to 4 shown, a damping friction pair includes: a rotating body 1, a pressing mechanism 2 and a damping plate 3. The rotating body 1 is in contact with the damping plate 3, and through the friction between the rotating body 1 and the damping plate 3, the friction pair has a damping effect; the pressing mechanism 2 is used to make the rotating body 1 and the damping plate 3 close tightly; a medium cavity 4 is provided between the rotating body 1 and the damping plate 3, and a damping medium is provided in the medium cavity 4.

[0041] Exemplarily, in an embodiment of the present invention, by providing the pressing mechanism 2, a pressing force is provided for pressing the rotating body 1 on the damping plate 3. The form of the pressing mechanism 2 can be various. For example, a thrust is applied to the rotating body 1 to make the rotating body 1 and the damping plate 3 pressed tightly, or a clamping force is applied to the whole of the rotating body 1 and the damping plate 3 to make the rotating body 1 and the damping plate 3 pressed tightly, or any other mechanism that can make the rotating body 1 and the damping plate 3 pressed tightly. By providing the medium cavity 4 between the rotating body 1 and the damping plate 3, when the rotating body 1 decelerates by friction with the damping plate 3, the direct contact surface between the rotating body 1 and the damping plate 3 is reduced, thereby reducing the wear of the rotating body 1 and the damping plate 3, and thus the service life of the rotating body 1 and the damping plate 3 can be extended.

[0042] A damping friction pair and a damping bearing provided by an embodiment of the present invention apply a pressing force to a rotating body 1 through a pressing mechanism 2, so that the rotating body 1 is in close contact with a damping plate 3 and undergoes friction. By providing a medium cavity 4 with a damping medium disposed therein, when the rotating body 1 rotates, it agitates the damping medium, thereby providing resistance to the rotation of the rotating body 1. During the process of reducing the speed of a rotating shaft, by providing the medium cavity 4 and the damping medium to provide resistance, the frictional force between the rotating body 1 and the damping plate 3 is reduced, thereby slowing down the wear of the damping plate 3 and the rotating body 1, and thus improving the service life of the damping plate 3 and the rotating body 1, effectively solving the problems of short service life and complex operation in the prior art.

[0043] Optionally, the medium cavity 4 is provided on the rotating body 1, and the opening of the medium cavity 4 cooperates with the damping plate 3 to bring the damping medium into contact with the damping plate 3.

[0044] Exemplarily, in the embodiment of the present invention, by providing the medium cavity 4 on the rotating body 1, an additional separate medium cavity 4 can be omitted, thereby improving the compactness of the structure, reducing unnecessary structures when the bearing undergoes friction deceleration, and thus improving the space utilization rate of this friction pair.

[0045] Optionally, the opening of the medium cavity 4 gradually expands towards the damping plate 3 for bringing the damping medium into more sufficient contact with the damping plate 3.

[0046] Exemplarily, in the embodiment of the present invention, by providing the medium cavity 4 to gradually expand from the opening towards the damping plate 3, the damping medium can be brought into more sufficient contact with the damping plate 3. A smaller space can be provided on the side of the medium cavity 4 close to the rotating body 1, and the damping medium in this part of the space is not in direct contact with the damping plate 3, thereby improving the space utilization rate of the medium cavity 4.

[0047] Optionally, the medium cavity 4 includes a guiding wall 41 disposed at the opening of the medium cavity 4. The included angle formed between the guiding wall 41 and the damping plate 3 has an opening facing the direction in which the guiding wall 41 moves relative to the damping plate 3, and the included angle formed between the guiding wall 41 and the damping plate 3 is an acute angle.

[0048] Exemplarily, in the embodiment of the present invention, when the rotating body 1 rotates counterclockwise, the guiding wall 41 is Figure 4 shown to be arranged at an angle with the damping plate 3. When the rotating body 1 rotates, it continuously pushes the damping medium in the medium cavity 4 towards the damping plate 3, thereby increasing the amount of damping medium between the damping plate 3 and the rotating body 1, reducing the direct frictional loss between the damping plate 3 and the rotating body 1, and further improving the service life of this structure.

[0049] Optionally, a plurality of medium cavities 4 are provided on the rotating body 1, and the plurality of medium cavities 4 are evenly distributed on the rotating shaft of the rotating body 1.

[0050] Exemplarily, in the embodiment of the present invention, by providing a plurality of medium cavities 4, the contact area between the damping medium and the damping plate 3 can be increased, thereby further reducing the wear of the damping plate 3 and improving the service life of the structure. The plurality of medium cavities 4 are arranged on the rotating shaft of the rotating body 1, such that when the rotating body 1 rotates, it can push the damping medium towards the damping plate 3, so that the contact between the damping medium and the damping plate 3 is more sufficient, further reducing the wear of the damping plate 3 and further improving the service life of the structure.

[0051] Optionally, the damping medium is a highly viscous liquid or fixed particles.

[0052] Exemplarily, in the embodiment of the present invention, setting the damping medium as a highly viscous liquid or fixed particles can increase the resistance when the rotating body 1 rotates, thereby reducing the wear between the rotating body 1 and the damping plate 3 and further improving the service life of the structure.

[0053] A damping bearing includes the aforementioned damping friction pair, the rotating body 1 is the inner ring of the damping bearing, and the damping plate 3 is the outer ring of the damping bearing.

[0054] Exemplarily, in the embodiment of the present invention, the function of the damping bearing is usually to reduce the speed of the rotating shaft. The rotating shaft is matched with the rotating body 1 such that the rotating body 1 rotates together with the rotating shaft. At this time, the rotating body 1 is the inner ring of the damping bearing, and the damping plate 3 is fixed to an external structure, so that the damping plate 3 becomes the outer ring of the damping bearing.

[0055] Optionally, it further includes an end plate 5. A limiting platform 51 is provided on the end plate 5. The pressing mechanism 2 is a spring 21. The spring 21 is sleeved on the limiting platform 51, and the two ends of the spring 21 are respectively abutted against the end plate 5 and the rotating body 1.

[0056] Exemplarily, in the embodiment of the present invention, the end plate 5 is arranged on the other side of the rotating body 1 away from the damping plate 3. By providing the limiting platform 51, a supporting force can be provided for the spring 21 and the spring 21 can only perform telescopic movement along the axis. Setting the pressing mechanism 2 in the form of a spring 21 has a simple structure and convenient operation. After setting the end plate 5, after connecting the end plate 5 and the rotating body 1 and arranging the spring 21 between the two, the rotating body 1 is subjected to a thrust from the spring 21, so that the rotating body 1 closely adheres to the damping plate 3. This structure is relatively simple and easy to implement, thereby improving the operation convenience of this damping bearing.

[0057] Optionally, the spring 21 is a conical spring, and the conical spring tapers from the end plate 5 towards the rotating body 1.

[0058] Exemplarily, in the embodiments of the present invention, the conical spring has stronger shock absorption ability compared with ordinary springs, and has the characteristics of small volume, large load and variable stiffness, making it more stable when providing elastic thrust to the rotating body 1. By setting the spring 21 in the form of a conical spring, the structural stability of this damping bearing is improved.

[0059] Optionally, the rotating body 1 is sleeved on the limiting platform 51.

[0060] Exemplarily, in the embodiments of the present invention, sleeving the rotating body 1 on the limiting platform 51 enables the rotating body 1 to only move axially with respect to the end plate 5, preventing the rotating body from being misaligned when the spring 21 applies thrust to the rotating body 1. By sleeving the rotating body 1 on the limiting platform 51, the structural stability of this damping bearing is further improved.

[0061] Optionally, a sealing ring 52 is provided on the limiting platform 51, and the sealing ring 52 is arranged between the limiting platform 51 and the rotating body 1.

[0062] Exemplarily, in the embodiments of the present invention, when adding damping medium into the medium cavity 4, by providing the sealing ring 52, it can prevent the damping medium from entering the mating part between the end plate 5 and the rotating shaft from the mating part between the end plate 5 and the rotating body 1 and then leaking to the outside of the end cover 6. By providing the sealing ring 52, the tightness of this damping bearing is improved.

[0063] Optionally, a rotating platform 11 is provided on the rotating body 1, and the damping plate 3 is sleeved on the rotating platform 11 and is hinged to the rotating body 1 through the rotating platform 11.

[0064] Exemplarily, in the embodiments of the present invention, by providing the cooperation between the rotating platform 11 and the damping plate 3, it can prevent the damping plate 3 from moving axially perpendicular to the rotating body 1, so that the damping plate 3 and the rotating body 1 can be more stable when performing friction speed reduction, and further improves the structural stability of this damping bearing.

[0065] Optionally, it further includes a fixedly connected end cover 6 and an outer core body 7. A cavity is formed between the end cover 6 and the outer core body 7. The end plate 5, the spring 21, the rotating body 1, and the damping plate 3 are all hollow rings, and the end plate 5, the spring 21, the rotating body 1, and the damping plate 3 are arranged in the cavity in sequence.

[0066] Exemplarily, in the embodiments of the present invention, the end cover 6 and the outer core body 7 constitute the external protection structure of the friction pair. By providing the end cover 6 and the outer core body 7, the stability of the relative movement of its internal components is ensured, and the structural stability of this damping bearing is further improved.

[0067] Optionally, a first shaft hole 71 is provided on the outer core body 7, and a first sealing band 12 is sleeved on the rotating platform 11, and the first sealing band 12 is arranged between the rotating platform 11 and the first shaft hole 71.

[0068] Exemplarily, in an embodiment of the present invention, the first sealing belt 12 is in interference fit with the first shaft hole 71. By providing the first sealing belt 12, when the first shaft hole 71 and the turntable 11 are in shaft hole fit, it can prevent the damping medium from leaking out to the outside of the present damping bearing, thereby further improving the tightness of the present damping bearing.

[0069] Optionally, the inner cavity of the outer core body 7 is in interference fit with the damping plate 3.

[0070] Exemplarily, in an embodiment of the present invention, by making the inner cavity of the outer core body 7 in interference fit with the damping plate 3, the damping plate 3 is fixed to a certain extent with the outer core body 7. When the rotating body 1 rotates, the damping plate 3 rotates relative to the rotating body 1, while the rotating body 1 remains fixed with the outer core body 7. In this way, relative friction can occur between the rotating body 1 and the damping plate 3, so that the rotating body 1 decelerates. By providing this structure, the deceleration efficiency of the present damping bearing is improved.

[0071] Optionally, the turntable 11 is in interference fit with the damping plate 3.

[0072] Exemplarily, in an embodiment of the present invention, by making the turntable 11 in interference fit with the damping plate 3, when the rotating body 1 rotates, relative sliding also occurs between the inner ring of the turntable 11 and the damping plate 3, thereby increasing the contact area between the rotating body 1 and the damping plate 3, and further improving the deceleration efficiency of the present damping bearing.

[0073] Optionally, the interference amount between the inner cavity of the outer core body 7 and the damping plate 3 is greater than the interference amount between the turntable 11 and the damping plate 3, and the damping medium is blocked on the side of the damping plate 3 away from the outer core body 7.

[0074] Exemplarily, in an embodiment of the present invention, setting the interference amount between the inner cavity of the outer core body 7 and the damping plate 3 to be greater than the interference amount between the turntable 11 and the damping plate 3 can prevent relative rotation between the damping plate 3 and the outer core body 7 from affecting the friction deceleration efficiency. At the same time, through the interference fit between the inner cavity of the outer core body 7 and the damping plate 3 and the interference fit between the turntable 11 and the damping plate 3, the damping medium can be blocked so that it is located on the side of the damping plate 3 away from the outer core body 7 and will not overflow to the other side of the damping plate, thereby further improving the tightness of the present damping bearing.

[0075] Optionally, the end plate 5 is provided with a convex shaft 53, and the end cover 6 is provided with a second shaft hole 61. The end plate 5 is hinged to the end cover 6 through the convex shaft 53 and the second shaft hole 61.

[0076] Exemplarily, in the embodiment of the present invention, by arranging the convex shaft 53 to cooperate with the end cover 6, when the end plate 5 and the rotating body 1 rotate, there will be no axial movement perpendicular to the axis, so that the end plate 5 and the rotating body can rotate more stably, further improving the structural stability of the present damping bearing.

[0077] Optionally, a second sealing band 54 is sleeved on the convex shaft 53, and the second sealing band 54 is arranged between the convex shaft 53 and the second shaft hole 61.

[0078] Exemplarily, in the embodiment of the present invention, the second sealing band 54 is in interference fit with the second shaft hole 61. By arranging the second sealing band 54, when the second shaft hole 61 and the convex shaft 53 are in shaft-hole fit, it can prevent the damping medium from leaking to the outside of the present damping bearing, thereby further improving the tightness of the present damping bearing.

[0079] Optionally, a shaft sleeve 72 is arranged on one side of the outer core body 7 close to the end cover 6, and the shaft sleeve 72 is in interference fit with the inner cavity of the end cover 6.

[0080] Exemplarily, in the embodiment of the present invention, making the shaft sleeve 72 in interference fit with the inner cavity of the end cover 6 can make the connection between the outer core body 7 and the end cover 6 more stable, so that a stable cavity is formed between the outer core body 7 and the end cover 6, thereby providing a protective effect for the internal parts. On the other hand, through the interference fit between the outer core body 7 and the end cover 6, it can prevent the damping medium from overflowing to the outside through the fit gap between the outer core body 7 and the end cover 6, so that the damping medium can be sealed in the cavity formed by the outer core body 7 and the end cover 6, thereby further improving the tightness of the present damping bearing.

[0081] Optionally, the medium cavity 4 is a cavity surrounded by the end cover 6, the end plate 5, the rotating body 1, the damping plate 3, and the outer core body 7, and the rotating body 1 is arranged in the cavity for agitating the damping medium.

[0082] Exemplarily, in the embodiment of the present invention, axially, the damping medium is between the end plate and the damping plate, used to slow down the rotation speed of the assembly composed of the rotating body 1 and the end plate 5, so as to achieve the effect of reducing the direct friction loss between the rotating body 1 and the damping plate 3. Immersing the assembly composed of the rotating body 1 and the end plate 5 completely in the damping medium can maximize the deceleration effect of the damping medium, thereby reducing the wear between the rotating body 1 and the damping plate 3 and further improving the service life of the present structure.

[0083] Optionally, a locking block 55 is further arranged on the end plate 5, and a locking groove 13 cooperating with the locking block 55 is arranged on the rotating body 1. The end plate 5 and the rotating body 1 achieve synchronous rotation through the cooperation of the locking block 55 and the locking groove 13.

[0084] Exemplarily, in the embodiment of the present invention, by providing the cooperation of the locking block 55 and the locking groove 13, the rotating body 1 and the end plate 5 can rotate coaxially stably, preventing relative rotation between the rotating body 1 and the end plate 5. By providing this structure, the structural stability of the present damping bearing is further improved.

[0085] Optionally, an integrally formed anti-slip block 14 is provided on the hollow annular inner ring of the rotating body 1.

[0086] Exemplarily, in the embodiment of the present invention, a plane matching the anti-slip block 14 is provided on the rotating shaft. By providing the cooperation of the integrally formed anti-slip block 14 and the rotating shaft, the rotating shaft and the rotating body 1 can rotate coaxially stably, preventing relative rotation between the rotating body 1 and the rotating shaft. By providing this structure, the structural stability of the present damping bearing is further improved.

[0087] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention belongs. The "first", "second" and similar terms used in the specification and claims of the present invention for patent application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "one" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0088] The above are only the optional embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A damping friction pair, characterized in that, Comprising: A rotating body (1), a pressing mechanism (2) and a damping plate (3), the rotating body (1) is in contact with the damping plate (3), and through the friction between the rotating body (1) and the damping plate (3), the friction pair has a damping effect; The pressing mechanism (2) is used to make the rotating body (1) and the damping plate (3) close tightly; A medium cavity (4) is provided between the rotating body (1) and the damping plate (3), and a damping medium is provided in the medium cavity (4); The medium cavity (4) is arranged on the rotating body (1), and the opening of the medium cavity (4) is matched with the damping plate (3) so that the damping medium contacts the damping plate (3); The medium cavity (4) includes a guiding wall (41), the guiding wall (41) is arranged at the opening of the medium cavity (4), and the included angle formed between the guiding wall (41) and the damping plate (3) has an opening facing the direction in which the guiding wall (41) moves relative to the damping plate (3), and the included angle formed between the guiding wall (41) and the damping plate (3) is an acute angle.

2. The damped friction pair according to claim 1, wherein, The opening of the medium cavity (4) expands gradually towards the damping plate (3) for more sufficient contact between the damping medium and the damping plate (3).

3. A damping friction pair according to any one of claims 1-2, characterized in that, A plurality of the medium cavities (4) are provided on the rotating body (1), and the plurality of medium cavities (4) are evenly distributed on the rotating shaft of the rotating body (1).

4. A damping friction pair according to claim 3, characterized in that, The damping medium is a highly viscous liquid or fixed particles.

5. A damping bearing, characterized in that, Comprising the damping friction pair in claim 4, the rotating body (1) is the inner ring of the damping bearing, and the damping plate (3) is the outer ring of the damping bearing.

6. A damping bearing according to claim 5, wherein, It further includes an end plate (5), a limiting platform (51) is provided on the end plate (5), the pressing mechanism (2) is a spring (21), the spring (21) is sleeved on the limiting platform (51), and two ends of the spring (21) are respectively in contact with the end plate (5) and the rotating body (1).

7. A damping bearing according to claim 6, characterized in that, The rotating body (1) is sleeved on the limiting platform (51).

8. A damping bearing according to claim 7, characterized in that, A sealing ring (52) is provided on the limiting platform (51), and the sealing ring (52) is arranged between the limiting platform (51) and the rotating body (1).

9. The damping bearing according to claim 8, characterized in that, A rotating platform (11) is provided on the rotating body (1), the damping plate (3) is sleeved on the rotating platform (11), and is hinged to the rotating body (1) through the rotating platform (11).

10. A damping bearing according to claim 9, characterized in that, It further includes a fixedly connected end cover (6) and an outer core body (7), a cavity is formed between the end cover (6) and the outer core body (7), the end plate (5), the spring (21), the rotating body (1), and the damping plate (3) are all hollow rings, and the end plate (5), the spring (21), the rotating body (1), and the damping plate (3) are arranged in the cavity in sequence.

11. The damping bearing according to claim 10, wherein, A first shaft hole (71) is provided on the outer core body (7), a first sealing belt (12) is sleeved on the rotating platform (11), and the first sealing belt (12) is arranged between the rotating platform (11) and the first shaft hole (71).

12. The damping bearing according to claim 10, wherein The inner cavity of the outer core body (7) is in interference fit with the damping plate (3).

13. The damping bearing according to claim 12, wherein, The rotating platform (11) is in interference fit with the damping plate (3).

14. The damping bearing according to claim 13, wherein, The interference between the inner cavity of the outer core body (7) and the damping plate (3) is greater than the interference between the turntable (11) and the damping plate (3), and the damping medium is blocked on the side of the damping plate (3) away from the outer core body (7).

15. The damping bearing according to claim 10, wherein The end plate (5) is provided with a convex shaft (53), the end cover (6) is provided with a second shaft hole (61), and the end plate (5) is hinged to the end cover (6) through the cooperation of the convex shaft (53) and the second shaft hole (61).

16. The damping bearing according to claim 15, wherein A second sealing belt (54) is sleeved on the convex shaft (53), and the second sealing belt (54) is arranged between the convex shaft (53) and the second shaft hole (61).

17. The damping bearing according to claim 10, characterized in that, A shaft sleeve (72) is arranged on the side of the outer core body (7) close to the end cover (6), and the shaft sleeve (72) is in interference fit with the inner cavity of the end cover (6).

18. The damping bearing according to claim 10, wherein, The medium cavity (4) is a cavity surrounded by the end cover (6), the end plate (5), the rotating body (1), the damping plate (3), and the outer core body (7), and the rotating body (1) is arranged in the cavity for agitating the damping medium.

19. The damping bearing according to claim 6, wherein The end plate (5) is further provided with a locking block (55), the rotating body (1) is provided with a locking groove (13) cooperating with the locking block (55), and the end plate (5) and the rotating body (1) are synchronously rotated through the cooperation of the locking block (55) and the locking groove (13).

20. The damping bearing according to claim 6, wherein An anti-slip block (14) is integrally formed on the hollow annular inner ring of the rotating body (1).

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