Damping friction pair and damping bearing

Abstract

The invention provides a damping friction pair and a damping bearing, and belongs to the field of bearings. The friction pair comprises a rotating body, a pressing mechanism and a damping plate, the rotating body abuts against the damping plate, and the friction pair has a damping effect through friction between the rotating body and the damping plate; the pressing mechanism is used for enabling the rotary body to abut against the damping plate; a medium cavity is formed between the rotary body and the damping plate, and a damping medium is arranged in the medium cavity. By the adoption of the damping friction pair and the damping bearing, the problems that in the prior art, the service life is short, and operation is complex can be solved.

Description

Technical Field

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

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. However, in some usage scenarios, it is necessary not only to provide support for the rotating body, but also to reduce the rotation speed of the rotating body so that the rotating body can rotate more stably or stay stably at any rotation angle.

[0003] In the prior art, a damping bearing is usually provided with a damping plate for friction with the rotating body, thereby reducing the rotation speed of the rotating body. After the rotating body and the damping plate have been in friction for a long time, the damping plate is likely to fail, and it is difficult to continue to slow down the rotating body, resulting in the scrapping of the damping plate, which needs to be replaced regularly.

[0004] The damping bearing in the prior art usually only has a damping plate for friction with the rotating body, which shortens the service life of the rotating body and the damping plate. During use, the damping plate needs to be frequently replaced, which may even cause the rotating body to be scrapped. As a result, the existing damping bearing needs to frequently replace parts in actual use, and the operation is relatively complicated. Summary of the invention

[0005] The embodiment of the present invention provides 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 solution is as follows: In a first aspect, a damping friction pair comprises: a rotating body, a pressing mechanism and a damping plate, wherein 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 clamping mechanism is used to make the rotating body close to the damping plate; A medium cavity is provided between the rotating body and the damping plate, and a damping medium is provided in the medium cavity.

[0006] Optionally, the medium cavity is arranged on the rotating body, and the opening of the medium cavity cooperates with the damping plate so that the damping medium contacts the damping plate.

[0007] Optionally, the medium cavity opening gradually expands toward the damping plate, so as to make the damping medium contact the damping plate more fully.

[0008] Optionally, the medium cavity includes a guide wall, which is arranged at the opening of the medium cavity, and the angle formed between the guide wall and the damping plate opens toward the direction of movement of the guide wall relative to the damping plate, and the angle formed between the guide wall and the damping plate is an acute angle.

[0009] Optionally, a plurality of the medium cavities are provided on the rotating body, and the plurality of the medium cavities are evenly distributed on the rotating shaft of the rotating body.

[0010] Optionally, the damping medium is a high-viscosity liquid or fixed particles.

[0011] In a second aspect, a damping bearing comprises the aforementioned damping friction pair, wherein the rotating body is an inner ring of the damping bearing, and the damping plate is an outer ring of the damping bearing.

[0012] Optionally, an end plate is further included, the end plate is provided with a limit platform, the clamping mechanism is a spring, the spring is sleeved on the limit platform, and two ends of the spring are respectively abutted against the end plate and the rotating body.

[0013] Optionally, the spring is a tower spring, and the tower spring gradually shrinks from the end plate toward the rotating body.

[0014] Optionally, the rotating body is sleeved on a limiting platform.

[0015] Optionally, a sealing ring is provided on the limiting platform, and the sealing ring is arranged between the limiting platform and the rotating body.

[0016] Optionally, a turntable is provided on the rotating body, and the damping plate is sleeved on the turntable and hinged to the rotating body via the turntable.

[0017] Optionally, it also 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, spring, rotating body, and damping plate are all hollow rings, and the end plate, spring, rotating body, and damping plate are arranged in the cavity in sequence.

[0018] Optionally, a first axial hole is provided on the outer core body, a first sealing belt is sleeved on the turntable, and the first sealing belt is provided between the turntable and the first axial hole.

[0019] Optionally, the inner cavity of the outer core body is interference fit with the damping plate.

[0020] Optionally, the turntable and the damping plate are interference fit.

[0021] Optionally, the interference between the inner cavity of the outer core body and the damping plate is greater than the interference 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.

[0022] Optionally, a convex shaft is provided on the end plate, a second axial hole is provided on the end cover, and the end plate is hinged to the end cover through the cooperation of the convex shaft and the second axial hole.

[0023] Optionally, a second sealing belt is sleeved on the convex shaft, and the second sealing belt is arranged between the convex shaft and the second shaft hole.

[0024] Optionally, a shaft sleeve is provided on a side of the outer box body close to the end cover, and the shaft sleeve is interference fit with the inner cavity of the end cover.

[0025] 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, and the rotating body is arranged in the cavity to stir the damping medium.

[0026] 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, and the end plate and the rotating body achieve synchronous rotation through the cooperation of the locking block and the locking groove.

[0027] Optionally, an integrally formed anti-sliding block is provided on the hollow annular inner ring of the rotating body.

[0028] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least: The damping friction pair and damping bearing provided by the embodiment of the present invention provide a clamping force to the rotating body through a clamping mechanism, so that the rotating body is close to the damping plate and rubs, and by setting a medium cavity, a damping medium is provided in the medium cavity, so that the rotating body stirs the damping medium when rotating, thereby providing resistance to the rotation of the rotating body. In the process of decelerating the rotating shaft, the friction between the rotating body and the damping plate is reduced by setting the medium cavity and the damping medium to provide resistance, thereby slowing down the wear of the damping plate and the rotating body, thereby increasing the service life of the damping plate and the rotating body, and can effectively solve the problems of short service life and complex operation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 is a schematic diagram of the overall structure of a damping bearing provided by an embodiment of the present invention; Figure 2 is a schematic side cross-sectional view of a damping bearing provided by an embodiment of the present invention; Figure 3 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 a rotating body provided in an embodiment of the present invention.

[0031] In the figure: 1-rotating body; 11-turntable; 12-first sealing belt; 13-locking groove; 14-anti-sliding block; 2-pressing mechanism; 21-spring; 3-damping plate; 4-medium chamber; 41-guide wall; 5-end plate; 51-limiting platform; 52-sealing ring; 53-convex shaft; 54-second sealing belt; 55-locking block; 6-end cover; 61-second axial hole; 7-outer core; 71-first axial hole; 72-sleeve. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Figure 1 is a schematic diagram of the overall structure of a damping bearing provided by an embodiment of the present invention; Figure 2 is a schematic side cross-sectional view of a damping bearing provided by an embodiment of the present invention; Figure 3 is an exploded view of the overall structure of the damping bearing provided by an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the rotating body provided by the embodiment of the present invention. Figures 1 to 4 A damping friction pair shown in the figure comprises: a rotating body 1, a clamping mechanism 2 and a damping plate 3. The rotating body 1 is in contact with the damping plate 3, and the friction pair has a damping effect through the friction between the rotating body 1 and the damping plate 3; the clamping mechanism 2 is used to make the rotating body 1 and the damping plate 3 close together; 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.

[0034] Exemplarily, in the embodiment of the present invention, a clamping mechanism 2 is provided to provide a clamping force for the rotating body 1 to be pressed against the damping plate 3. The clamping mechanism 2 can be in various forms, such as applying a thrust to the rotating body 1 so that the rotating body 1 and the damping plate 3 are pressed, or applying a clamping force to the rotating body 1 and the damping plate 3 as a whole so that the rotating body 1 and the damping plate 3 are pressed, or any other mechanism that can press the rotating body 1 and the damping plate 3. By providing a medium cavity 4 between the rotating body 1 and the damping plate 3, when the rotating body 1 is frictionally decelerated 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.

[0035] The damping friction pair and damping bearing provided by the embodiment of the present invention provide a clamping force to the rotating body 1 through the clamping mechanism 2, so that the rotating body 1 is close to the damping plate 3 and rubs, and by providing a medium cavity 4, a damping medium is provided in the medium cavity 4, so that the rotating body 1 stirs the damping medium when rotating, thereby providing resistance to the rotation of the rotating body 1. In the process of decelerating the rotating shaft, the friction between the rotating body 1 and the damping plate 3 is reduced by providing the medium cavity 4 and the damping medium to provide resistance, thereby slowing down the wear of the damping plate 3 and the rotating body 1, thereby increasing the service life of the damping plate 3 and the rotating body 1, and can effectively solve the problems of short service life and complex operation in the prior art.

[0036] Optionally, the medium cavity 4 is disposed on the rotating body 1 , and an opening of the medium cavity 4 cooperates with the damping plate 3 , so that the damping medium contacts the damping plate 3 .

[0037] Illustratively, in an embodiment of the present invention, by arranging the medium chamber 4 on the rotating body 1, the additional arrangement of a separate medium chamber 4 can be omitted, thereby improving the compactness of the structure and reducing unnecessary structures when the bearing is subjected to frictional deceleration, thereby improving the space utilization of the friction pair.

[0038] Optionally, the opening of the medium cavity 4 gradually expands toward the damping plate 3 so as to make the damping medium contact the damping plate 3 more fully.

[0039] Exemplarily, in an embodiment of the present invention, the medium cavity 4 is arranged to gradually expand from the opening toward the damping plate 3, so that the damping medium can be in more complete contact with the damping plate 3. A smaller space can be arranged on the side of the medium cavity 4 close to the rotating body 1. The damping medium in this part of the space is not in direct contact with the damping plate 3, thereby improving the space utilization of the medium cavity 4.

[0040] Optionally, the medium cavity 4 includes a guide wall 41, which is arranged at the opening of the medium cavity 4, and the angle formed between the guide wall 41 and the damping plate 3 opens toward the direction of movement of the guide wall 41 relative to the damping plate 3, and the angle formed between the guide wall 41 and the damping plate 3 is an acute angle.

[0041] For example, in the embodiment of the present invention, when the rotating body 1 rotates in the counterclockwise direction, the guide wall 41 is as follows: Figure 4 As shown, it is arranged at an angle with the damping plate 3. When the rotating body 1 rotates, it will continuously push the damping medium in the medium cavity 4 to move toward the damping plate 3, thereby increasing the amount of damping medium between the damping plate 3 and the rotating body 1, thereby reducing the direct friction loss between the damping plate 3 and the rotating body 1, and further improving the service life of the present structure.

[0042] 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 .

[0043] For example, in the embodiment of the present invention, by providing a plurality of medium chambers 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 present structure. The plurality of medium chambers 4 are provided on the rotating shaft of the rotating body 1, so that when the rotating body 1 rotates, it can push the damping medium to move in the direction of the damping plate 3, thereby making the contact between the damping medium and the damping plate 3 more complete, further reducing the wear of the damping plate 3 and further improving the service life of the present structure.

[0044] Optionally, the damping medium is a highly viscous liquid or fixed particles.

[0045] Exemplarily, in an embodiment of the present invention, the damping medium is set to a high-viscosity liquid or fixed particles, which can increase the resistance of the rotating body 1 during rotation, thereby reducing the wear between the rotating body 1 and the damping plate 3, and further improving the service life of the structure.

[0046] A damping bearing comprises the aforementioned damping friction pair, wherein 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.

[0047] For example, in an embodiment of the present invention, the function of the damping bearing is usually to reduce the speed of the rotating shaft, and to cooperate the rotating shaft with the rotating body 1 so 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 the external structure, so that the damping plate 3 becomes the outer ring of the damping bearing.

[0048] Optionally, it further includes an end plate 5, on which a limit platform 51 is provided, and the clamping mechanism 2 is a spring 21, which is sleeved on the limit platform 51, and two ends of the spring 21 are respectively abutted against the end plate 5 and the rotating body 1.

[0049] For example, 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 setting the limit platform 51, a support force can be provided to the spring 21, and the spring 21 can only perform telescopic movement along the axis. The clamping mechanism 2 is arranged in the form of a spring 21, which has a simple structure and convenient operation. After the end plate 5 is arranged, the end plate 5 can be connected to the rotating body 1, and the spring 21 can be arranged between the two, so that the rotating body 1 is subjected to the thrust from the spring 21, so that the rotating body 1 is close to the damping plate 3. This structure is relatively simple and easy to implement, thereby improving the convenience of operation of the damping bearing.

[0050] Optionally, the spring 21 is a tower spring, which gradually shrinks from the end plate 5 toward the rotating body 1 .

[0051] Illustratively, in an embodiment of the present invention, the tower spring has a stronger shock-absorbing ability than an ordinary spring, and it has the characteristics of small volume, large load, and variable stiffness, which makes it more stable when providing elastic thrust to the rotating body 1. By setting the spring 21 in the form of a tower spring, the structural stability of the damping bearing is improved.

[0052] Optionally, the rotating body 1 is sleeved on the limiting platform 51 .

[0053] Illustratively, in an embodiment of the present invention, the rotating body 1 is sleeved on the limit platform 51, so that only axial movement occurs between the rotating body 1 and the end plate 5, thereby preventing the rotating body from being misplaced when the spring 21 applies thrust to the rotating body 1. By sleeved the rotating body 1 on the limit platform 51, the structural stability of the damping bearing is further improved.

[0054] 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 .

[0055] Illustratively, in an embodiment of the present invention, when damping medium is added into the medium cavity 4, a sealing ring 52 is provided to prevent the damping medium from entering from the fitting position of the end plate 5 and the rotating body 1 into the fitting position of the end plate 5 and the rotating shaft and then leaking to the outside of the end cover 6. By providing the sealing ring 52, the airtightness of the damping bearing is improved.

[0056] Optionally, a turntable 11 is provided on the rotating body 1 , and the damping plate 3 is sleeved on the turntable 11 and is hinged to the rotating body 1 via the turntable 11 .

[0057] Illustratively, in an embodiment of the present invention, by arranging a turntable 11 to cooperate with the damping plate 3, no movement perpendicular to the axial direction will occur between the damping plate 3 and the rotating body 1, thereby making the friction deceleration of the damping plate 3 and the rotating body 1 more stable, further improving the structural stability of the damping bearing.

[0058] Optionally, it also 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.

[0059] Illustratively, in an embodiment of the present invention, the end cover 6 and the outer core body 7 constitute an 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 the damping bearing is further improved.

[0060] Optionally, a first axial hole 71 is provided on the outer core body 7 , a first sealing belt 12 is sleeved on the turntable 11 , and the first sealing belt 12 is arranged between the turntable 11 and the first axial hole 71 .

[0061] Exemplarily, in an embodiment of the present invention, the first sealing band 12 is interference fit with the first axial hole 71. By providing the first sealing band 12, when the first axial hole 71 is axially matched with the turntable 11, the damping medium can be prevented from leaking to the outside of the damping bearing, thereby further improving the airtightness of the damping bearing.

[0062] Optionally, the inner cavity of the outer core body 7 is interference fit with the damping plate 3 .

[0063] Illustratively, in an embodiment of the present invention, the inner cavity of the outer core body 7 is interference fit with the damping plate 3, so that the damping plate 3 and the outer core body 7 are fixed to a certain extent. When the rotating body 1 rotates, the damping plate 3 and the rotating body 1 rotate relative to each other, while the rotating body 1 remains fixed to the outer core body 7. In this way, relative friction can occur between the rotating body 1 and the damping plate 3, thereby reducing the speed of the rotating body 1. By setting this structure, the deceleration efficiency of the damping bearing is improved.

[0064] Optionally, the turntable 11 and the damping plate 3 are interference fit.

[0065] Illustratively, in an embodiment of the present invention, the turntable 11 and the damping plate 3 are interference fit so that when the rotating body 1 rotates, the turntable 11 and the inner ring of the damping plate 3 will also slide relative to each other, thereby increasing the contact area between the rotating body 1 and the damping plate 3 and further improving the deceleration efficiency of the damping bearing.

[0066] Optionally, 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 .

[0067] Exemplarily, in an embodiment of the present invention, the interference fit between the inner cavity of the outer core body 7 and the damping plate 3 is set to be greater than the interference fit between the turntable 11 and the damping plate 3, which can prevent the damping plate 3 and the outer core body 7 from relative rotation and affect the efficiency of friction deceleration. At the same time, 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 can block the damping medium 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 airtightness of the damping bearing.

[0068] Optionally, the end plate 5 is provided with a protruding shaft 53 , and 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 between the protruding shaft 53 and the second shaft hole 61 .

[0069] Illustratively, in an embodiment of the present invention, by providing a convex shaft 53 to cooperate with the end cover 6, the end plate 5 and the rotating body 1 will not move perpendicular to the axial direction when rotating, thereby making the end plate 5 and the rotating body rotate more stably, further improving the structural stability of the damping bearing.

[0070] Optionally, a second sealing belt 54 is sleeved on the protruding shaft 53 , and the second sealing belt 54 is arranged between the protruding shaft 53 and the second shaft hole 61 .

[0071] Exemplarily, in an embodiment of the present invention, the second sealing band 54 is interference fit with the second axial hole 61. By providing the second sealing band 54, when the second axial hole 61 is axially matched with the convex shaft 53, the damping medium can be prevented from leaking to the outside of the damping bearing, thereby further improving the airtightness of the damping bearing.

[0072] Optionally, a shaft sleeve 72 is provided on a side of the outer core body 7 close to the end cover 6 , and the shaft sleeve 72 is interference fit with the inner cavity of the end cover 6 .

[0073] Illustratively, in an embodiment of the present invention, the sleeve 72 is interference fit with the inner cavity of the end cover 6, which can make the connection between the outer core body 7 and the end cover 6 more stable, thereby forming a stable cavity between the outer core body 7 and the end cover 6, thereby providing protection for the parts inside thereof. On the other hand, through the interference fit between the outer core body 7 and the end cover 6, the damping medium can be prevented from overflowing to the outside through the fitting 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 airtightness of the damping bearing.

[0074] 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 7, and the rotating body 1 is arranged in the cavity to stir the damping medium.

[0075] Exemplarily, in an embodiment of the present invention, in the axial direction, the damping medium is located between the end plate and the damping plate, and is used to slow down the rotation speed of the assembly consisting of the rotating body 1 and the end plate 5, thereby achieving the effect of reducing the direct friction loss between the rotating body 1 and the damping plate 3. The assembly consisting of the rotating body 1 and the end plate 5 is completely immersed in the damping medium, which 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 structure.

[0076] Optionally, a locking block 55 is further provided on the end plate 5 , and a locking groove 13 cooperating with the locking block 55 is provided on the rotating body 1 , so that the end plate 5 and the rotating body 1 can realize synchronous rotation through the cooperation of the locking block 55 and the locking groove 13 .

[0077] Exemplarily, in an embodiment of the present invention, by setting a locking block 55 and a locking groove 13, the rotating body 1 and the end plate 5 can stably rotate coaxially to prevent relative rotation between the rotating body 1 and the end plate 5. By setting this structure, the structural stability of the damping bearing is further improved.

[0078] Optionally, an integrally formed anti-sliding block 14 is provided on the hollow annular inner ring of the rotating body 1 .

[0079] Illustratively, in an embodiment of the present invention, a plane matching the anti-sliding block 14 is provided on the rotating shaft. By providing an integrally formed anti-sliding block 14 to cooperate with the rotating shaft, the rotating shaft and the rotating body 1 can stably rotate coaxially, thereby preventing relative rotation between the rotating body 1 and the rotating shaft. By providing this structure, the structural stability of the damping bearing is further improved.

[0080] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0081] The above descriptions are merely optional embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A damping friction pair, characterized in that: include: A rotating body (1), a pressing mechanism (2) and a damping plate (3), wherein the rotating body (1) and the damping plate (3) are in contact with each other, and through 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 to each other; 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).

2. A damping friction pair according to claim 1, characterized in that: The medium cavity (4) is arranged on the rotating body (1), and the opening of the medium cavity (4) cooperates with the damping plate (3) so that the damping medium is in contact with the damping plate (3).

3. A damping friction pair according to claim 2, characterized in that: The opening of the medium cavity (4) gradually expands toward the damping plate (3), so as to enable the damping medium to be in more complete contact with the damping plate (3).

4. A damping friction pair according to claim 2, characterized in that: The medium cavity (4) comprises a guide wall (41), the guide wall (41) being arranged at the opening of the medium cavity (4), the angle formed between the guide wall (41) and the damping plate (3) opening towards the direction of movement of the guide wall (41) relative to the damping plate (3), and the angle formed between the guide wall (41) and the damping plate (3) being an acute angle.

5. A damping friction pair according to any one of claims 1 to 4, characterized in that: The rotating body (1) is provided with a plurality of the medium cavities (4), and the plurality of the medium cavities (4) are evenly distributed on the rotating shaft of the rotating body (1).

6. A damping friction pair according to claim 5, characterized in that: The damping medium is a high-viscosity liquid or fixed particles.

7. A damping bearing, characterized in that: Comprising the damping friction pair as claimed in claim 6, 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.

8. A damping bearing according to claim 7, characterized in that: It also comprises an end plate (5), the end plate (5) being provided with a limit platform (51), the clamping mechanism (2) being a spring (21), the spring (21) being sleeved on the limit platform (51), and the two ends of the spring (21) being respectively abutted against the end plate (5) and the rotating body (1).

9. A damping bearing according to claim 8, characterized in that: The rotating body (1) is sleeved on the limiting platform (51).

10. A damping bearing according to claim 9, 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).

11. The damping bearing according to claim 10, characterized in that: A turntable (11) is provided on the rotating body (1), and the damping plate (3) is sleeved on the turntable (11) and is hinged to the rotating body (1) via the turntable (11).

12. A damping bearing according to claim 11, characterized in that: It also comprises an end cover (6) and an outer core (7) which are fixedly connected, a cavity being formed between the end cover (6) and the outer core (7), the end plate (5), the spring (21), the rotating body (1), and the damping plate (3) are all hollow ring-shaped, and the end plate (5), the spring (21), the rotating body (1), and the damping plate (3) are arranged in sequence in the cavity.

13. The damping bearing according to claim 12, characterized in that: The outer core body (7) is provided with a first axial hole (71), the turntable (11) is sleeved with a first sealing belt (12), and the first sealing belt (12) is arranged between the turntable (11) and the first axial hole (71).

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

15. The damping bearing according to claim 14, characterized in that: The turntable (11) and the damping plate (3) are interference fit.

16. The damping bearing according to claim 15, characterized in that: 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 a side of the damping plate (3) away from the outer core body (7).

17. The damping bearing according to claim 12, characterized in that: 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 hingedly connected to the end cover (6) through the cooperation of the convex shaft (53) and the second shaft hole (61).

18. The damping bearing according to claim 17, characterized in that: 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).

19. The damping bearing according to claim 12, characterized in that: A shaft sleeve (72) is provided on a side of the outer core body (7) close to the end cover (6), and the shaft sleeve (72) is interference fit with the inner cavity of the end cover (6).

20. The damping bearing according to claim 12, characterized in that: The medium cavity (4) is a cavity formed by the end cover (6), the end plate (5), the rotating body (1), the damping plate (3), and the outer core (7); the rotating body (1) is arranged in the cavity to stir the damping medium.

21. The damping bearing according to claim 8, characterized in that: The end plate (5) is further provided with a locking block (55), and the rotating body (1) is provided with a locking groove (13) that cooperates with the locking block (55). The end plate (5) and the rotating body (1) are able to rotate synchronously through the cooperation of the locking block (55) and the locking groove (13).

22. The damping bearing according to claim 8, characterized in that: An integrally formed anti-sliding block (14) is provided on the hollow annular inner ring of the rotating body (1).

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