Plane pressure bearing with low friction force

Abstract

The utility model relates to the technical field of plane bearing structures, and discloses a low-friction plane pressure bearing which comprises a plane bearing main body, a pressure buffering mechanism is arranged at the bottom of the plane bearing main body, the plane bearing main body comprises a lower cover, a sealing ring, a gasket, an oil film and an upper cover, and the pressure buffering mechanism comprises a bearing pad. A hollow foot is fixedly installed at the top of the bearing pad, and a thickened rubber bag is fixedly connected to the outer wall of the hollow foot. Through the integral design of the pressure buffering mechanism, when the plane bearing main body is subjected to an axial load, the upper half part of the pressure buffering mechanism can compress gas into the inner cavity of the hollow foot, so that the thickened rubber bag is promoted to generate expansion elastic deformation, and meanwhile, the silicone rubber strip can be extruded to generate elastic deformation; therefore, the function of buffering the axial load is realized, the safety of the plane bearing main body is guaranteed, and the service life of the plane bearing main body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of plane bearing structures, and in particular to a low-friction plane pressure 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. Plane bearings are components composed of a plane cage assembly with needle rollers, cylindrical rollers or steel balls, and a plane washer. Plane bearings are divided into plane bearings with needle rollers and plane bearings with balls.

[0003] A Chinese patent discloses a high-stability plane pressure bearing, with the publication number CN214888393U. The technical solution disclosed in the patent document is as follows: it includes a roller and a cage, the cage includes an upper cage and a lower cage, the upper cage and the lower cage are respectively arranged on the upper and lower sides of the roller, the rollers are provided in multiple groups and are evenly distributed on the cage, a fixing seat is provided on the outer side of the upper cage and the lower cage, a pressure cover is provided on the upper side of the fixing seat, the pressure cover and the fixing seat are connected by threads, and a limit ring is provided between the upper cage and the lower cage.

[0004] In order to solve the problem that rolling elements are prone to falling off after working for a period of time, the existing technology uses a combined cage to fix the rollers. However, the axial load cannot be buffered. If the instantaneous pressure of the axial load is large, it is very easy to cause damage to the components contained in the plane bearing. Utility Model Content

[0005] The utility model aims to provide a low-friction plane pressure bearing to solve the problem in the prior art that the bearing cannot buffer the axial load.

[0006] The utility model provides the following technical solution: a low-friction plane pressure bearing, comprising a plane bearing body, a pressure buffer mechanism is arranged at the bottom of the plane bearing body, and the plane bearing body comprises a lower cover, a sealing ring, a gasket, an oil film and an upper cover.

[0007] The pressure buffer mechanism includes a receiving pad, a hollow foot is fixedly installed on the top of the receiving pad, a thickened rubber bag is fixedly connected to the outer wall of the hollow foot, a silicone strip is fixedly connected to the bottom of the receiving pad, a bottom supporting pad is fixedly connected to the bottom of the silicone strip, a through hole is opened on the outer wall of the silicone strip, and the thickened rubber bag and the silicone strip can produce elastic deformation to buffer the force applied to the plane bearing body.

[0008] As a preferred embodiment of the above technical solution, a closed bottom plate is fixedly connected to the top of the hollow foot, a hole corresponding to the hollow foot is opened on the top of the closed bottom plate, and the closed bottom plate is used to seal the bottom of the sealing ring.

[0009] As a preferred embodiment of the above technical solution, a sealing ring is fixedly installed on the top of the closed bottom plate, and a honeycomb plate is fixedly installed on the top of the sealing ring, and the honeycomb plate is used to seal the top of the sealing ring.

[0010] As a preferred embodiment of the above technical solution, a sealing slide is slidably connected to the inner wall of the sealing ring, an extension rod is fixedly connected to the top of the sealing slide, a honeycomb hole corresponding to the extension rod is opened on the top of the honeycomb plate, and the sealing slide can slide in the sealing ring to compress the gas.

[0011] As a preferred embodiment of the above technical solution, the outer wall of the extension rod is slidably connected to the inner wall of the honeycomb hole, the top of the extension rod is fixedly connected to the bottom of the plane bearing body, the extension rod is connected to the plane bearing body, and the extension rod extends from the top of the honeycomb hole plate with a certain margin.

[0012] As a preferred embodiment of the above technical solution, the upper cover is detachably connected to the top of the lower cover, and the sealing ring is arranged on the outer wall of the lower cover.

[0013] As a preferred embodiment of the above technical solution, the gasket is arranged at the connection between the lower cover and the upper cover, and the oil film is arranged on the outer wall of the gasket. Through the design of the sealing ring, the gasket and the oil film, rotational grease can be added to the plane bearing body to reduce the rotational friction.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model adopts the overall design of the pressure buffer mechanism. When the plane bearing body is subjected to an axial load, the upper part of the pressure buffer mechanism can compress gas into the inner cavity of the hollow foot, causing the thickened rubber bag to produce elastic deformation of expansion, and at the same time, the silicone strip can be squeezed to cause the silicone strip to produce elastic deformation, thereby realizing the function of buffering the axial load, ensuring the safety of the plane bearing body, and extending the service life of the plane bearing body. Moreover, through the design of the sealing ring, the gasket and the oil film, the plane bearing body can be added with rotational grease during production to reduce the friction of the rotation of the plane bearing body and improve the flexibility of rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the pressure buffer mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the separation structure of the receiving pad and the silicone strip of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall exploded structure of the sealing ring of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the plane bearing main body of the utility model;

[0021] Figure 6 It is a schematic cross-sectional structure diagram of the plane bearing main body of the utility model;

[0022] Figure 7 for Figure 6 A magnified view of the structure at center.

[0023] In the figure: 1. plane bearing body; 11. lower cover; 12. sealing ring; 13. gasket; 14. oil film; 15. upper cover; 2. pressure buffer mechanism; 21. sealing ring; 211. honeycomb plate; 212. closed bottom plate; 213. sealing slide plate; 214. extension rod; 22. receiving pad; 23. hollow foot; 24. thickened rubber bag; 25. bottom support pad; 26. silicone strip; 27. through hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a low-friction plane pressure bearing, comprising a plane bearing body 1, a pressure buffer mechanism 2 is arranged at the bottom of the plane bearing body 1, the plane bearing body 1 comprises a lower cover 11, a sealing ring 12, a gasket 13, an oil film 14 and an upper cover 15, the pressure buffer mechanism 2 comprises a receiving pad 22, a hollow foot 23 is fixedly installed on the top of the receiving pad 22, a thickened rubber bag 24 is fixedly connected to the outer wall of the hollow foot 23, a silicone strip 26 is fixedly connected to the bottom of the receiving pad 22, a bottom support pad 25 is fixedly connected to the bottom of the silicone strip 26, and a through hole 27 is opened on the outer wall of the silicone strip 26. When the plane bearing body 1 is subjected to an axial load, the upper half of the pressure buffer mechanism 2 can compress gas into the inner cavity of the hollow foot 23, so as to cause the thickened rubber bag 24 to produce elastic deformation of expansion, and at the same time squeeze the silicone strip 26 to cause the silicone strip 26 to produce elastic deformation, thereby realizing the function of buffering the axial load.

[0026] As an implementation method in this embodiment, Figure 4As shown, the top of the hollow foot 23 is fixedly connected with a closed bottom plate 212, and a hole corresponding to the hollow foot 23 is opened on the top of the closed bottom plate 212, and a sealing ring 21 is fixedly installed on the top of the closed bottom plate 212, and a honeycomb plate 211 is fixedly installed on the top of the sealing ring 21, and a sealing slide plate 213 is slidably connected to the inner wall of the sealing ring 21, and an extension rod 214 is fixedly connected to the top of the sealing slide plate 213, and a honeycomb hole corresponding to the extension rod 214 is opened on the top of the honeycomb plate 211, and the outer wall of the extension rod 214 is slidably connected to the inner wall of the honeycomb hole, and the top of the extension rod 214 is fixedly connected to the bottom of the plane bearing body 1. When the plane bearing body 1 is subjected to axial load, the sealing slide plate 213 will slide on the inner wall of the sealing ring 21, and squeeze the gas at the bottom of the inner cavity of the sealing ring 21 through the closed bottom plate 212 into the inner cavity of the hollow foot 23, so as to facilitate the buffering work.

[0027] As an implementation method in this embodiment, Figure 5-Figure 7 As shown, the upper cover 15 is detachably connected to the top of the lower cover 11, the sealing ring 12 is arranged on the outer wall of the lower cover 11, the gasket 13 is arranged at the connection between the lower cover 11 and the upper cover 15, and an oil film 14 is arranged on the outer wall of the gasket 13. Through the design of the sealing ring 12, the gasket 13 and the oil film 14, during the production of the plane bearing body 1, rotational grease can be added to reduce the friction of the plane bearing body 1 during rotation and improve the flexibility of rotation. An axial pressure of 5000N is applied to the plane bearing body 1, and it is swung 45° left and right at a speed of 30 times / min and swung 500,000 times. The plane bearing body 1 rotates normally without cracking, abnormal noise or sticking. The materials of the lower cover 11 and the upper cover 15 are both set to POM, the material of the gasket 13 is set to TPEE, the material of the oil film 14 is set to polytetrafluoroethylene, and the material of the sealing ring 12 is set to SPHC+NBR.

[0028] Working principle: When the plane bearing body 1 is subjected to an axial load, the sealing slide plate 213 will slide on the inner wall of the sealing ring 21, squeezing the gas at the bottom of the inner cavity of the sealing ring 21 through the closed bottom plate 212 into the inner cavity of the hollow foot 23, causing the thickened rubber bag 24 to produce elastic deformation to expand, and at the same time squeezing the silicone strip 26 to cause the silicone strip 26 to produce elastic deformation, thereby buffering the axial load.

[0029] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A low-friction plane pressure bearing, characterized in that: It comprises a plane bearing body (1), a pressure buffer mechanism (2) being arranged at the bottom of the plane bearing body (1), and the plane bearing body (1) comprising a lower cover (11), a sealing ring (12), a gasket (13), an oil film (14) and an upper cover (15); The pressure buffer mechanism (2) comprises a receiving pad (22), a hollow foot (23) being fixedly mounted on the top of the receiving pad (22), a thickened rubber bag (24) being fixedly connected to the outer wall of the hollow foot (23), a silicone strip (26) being fixedly connected to the bottom of the receiving pad (22), a bottom support pad (25) being fixedly connected to the bottom of the silicone strip (26), and a through hole (27) being provided on the outer wall of the silicone strip (26).

2. A low-friction plane pressure bearing according to claim 1, characterized in that: The top of the hollow foot (23) is fixedly connected to a closed bottom plate (212), and the top of the closed bottom plate (212) is provided with a hole corresponding to the hollow foot (23).

3. A low-friction plane pressure bearing according to claim 2, characterized in that: A sealing ring (21) is fixedly mounted on the top of the closed bottom plate (212), and a honeycomb plate (211) is fixedly mounted on the top of the sealing ring (21).

4. A low-friction plane pressure bearing according to claim 3, characterized in that: A sealing slide plate (213) is slidably connected to the inner wall of the sealing ring (21), an extension rod (214) is fixedly connected to the top of the sealing slide plate (213), and a honeycomb hole corresponding to the extension rod (214) is formed on the top of the honeycomb plate (211).

5. A low-friction plane pressure bearing according to claim 4, characterized in that: The outer wall of the extension rod (214) is slidably connected to the inner wall of the honeycomb hole, and the top of the extension rod (214) is fixedly connected to the bottom of the plane bearing body (1).

6. A low-friction plane pressure bearing according to claim 1, characterized in that: The upper cover (15) is detachably connected to the top of the lower cover (11), and the sealing ring (12) is arranged on the outer wall of the lower cover (11).

7. A low-friction plane pressure bearing according to claim 1, characterized in that: The gasket (13) is arranged at the connection between the lower cover (11) and the upper cover (15), and the oil film (14) is arranged on the outer wall of the gasket (13).

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