Water-lubricated bearing

Abstract

The utility model discloses a water lubricated bearing which comprises a bearing outer ring, a bearing inner ring, a water absorbing sponge and a rolling piece, the bearing inner ring is arranged in the bearing outer ring at intervals, and the bearing inner ring is provided with a containing cavity and a water inlet communicated with the containing cavity. A water outlet communicated with the containing cavity is further formed in the side, facing the bearing outer ring, of the bearing inner ring, and the water outlet is gradually expanded in the direction facing the bearing outer ring. The water absorption sponge is arranged in the accommodating cavity; and the rolling piece is arranged between the bearing outer ring and the bearing inner ring. It can be guaranteed that the bearing can normally rotate and work in a water-free environment.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a water-lubricated bearing. Background Art

[0002] Water-lubricated bearings are used in water and are lubricated directly by water without the need for seals. The design and application of water-lubricated bearings are complex and they are typically used in specific environments such as ships, marine and other mechanical transmission systems.

[0003] Patent CN102003464A discloses a water-lubricated bearing, including a metal base, a bearing shell, and a water tank. Its characteristics are that a rubber bearing shell is vulcanized on the metal base, and a water tank is opened on the bearing shell. The water tank can not only dissipate heat, but also remove impurities in the pressure bearing under the condition of water as the lubrication medium.

[0004] During actual use, water-lubricated bearings may sometimes be in a short-term waterless environment. However, the above-mentioned prior art cannot obtain the lubricating effect of water in a waterless environment, thereby affecting the normal rotation of the water-lubricated bearings. Utility Model Content

[0005] The purpose of this utility model is to overcome the above technical deficiencies and propose a water-lubricated bearing to solve the technical problem of the prior art that the water-lubricated bearing cannot obtain the lubrication effect of water in a waterless environment, thereby affecting the normal rotation of the water-lubricated bearing.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a water-lubricated bearing, comprising:

[0008] Bearing outer ring;

[0009] A bearing inner ring, the bearing inner ring being spaced apart and disposed inside the bearing outer ring, the bearing inner ring being provided with an accommodating cavity and a water inlet communicating with the accommodating cavity, and the bearing inner ring being further provided with a water outlet communicating with the accommodating cavity on a side facing the bearing outer ring, the water outlet being arranged to gradually expand in a direction toward the bearing outer ring;

[0010] a water-absorbing sponge, the water-absorbing sponge being disposed in the accommodating cavity; and

[0011] A rolling element is provided between the bearing outer ring and the bearing inner ring.

[0012] In some embodiments, the water inlet includes a first water inlet and a second water inlet, the first water inlet is located on a side of the bearing inner ring away from the bearing outer ring, and the second water inlet is located on a side of the bearing inner ring along its width direction.

[0013] In some embodiments, the second water inlet is arranged to gradually expand in a direction toward the accommodating cavity.

[0014] In some embodiments, there are multiple first water inlets, and the multiple first water inlets are arranged in an array;

[0015] There are multiple second water inlets, and the multiple second water inlets are arranged at intervals along the circumference of the bearing inner ring.

[0016] In some embodiments, a mounting groove in an annular shape is provided on a side of the bearing outer ring facing the bearing inner ring, and the rolling element is located in the mounting groove;

[0017] A mounting protrusion adapted to the mounting groove is provided on a side of the bearing inner ring facing the bearing outer ring. The mounting protrusion is located in the mounting groove, and the water outlet is located on the mounting protrusion.

[0018] In some embodiments, two opposite sides of the mounting protrusion are arranged in an arc shape.

[0019] In some embodiments, the accommodating cavity extends to the inside of the mounting protrusion, and the water-absorbing sponge is adapted to the accommodating cavity.

[0020] In some embodiments, the rolling element includes a rotating roller, and the rotating roller is adapted to the mounting groove.

[0021] In some embodiments, both ends of the rotating roller are rotatably mounted on two opposite side walls of the mounting groove.

[0022] In some embodiments, there are multiple water outlets, and the multiple water outlets are arranged at intervals along the circumference of the bearing inner ring.

[0023] Compared with the prior art, the water-lubricated bearing provided by the present invention has a rolling element arranged between the bearing outer ring and the bearing inner ring, so that the bearing outer ring and the bearing inner ring can rotate relative to each other, and a water-absorbing sponge is arranged inside the bearing inner ring. When used in a water environment, external water will enter the accommodating cavity through the water inlet and be stored by the water-absorbing sponge. When the bearing is in a short-term waterless environment, the water in the water-absorbing sponge will enter between the bearing outer ring and the bearing inner ring through the water outlet, thereby lubricating the rolling element and ensuring that the bearing can rotate and work normally in a waterless environment.

[0024] The above description is only an overview of the technical solution of the present invention. In order to enable a clearer understanding of the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of an embodiment of a water-lubricated bearing provided by the present utility model;

[0026] Figure 2 yes Figure 1 Partial cross-sectional view of a water-lubricated bearing;

[0027] Figure 3 yes Figure 1 Explosion diagram of a water-lubricated bearing;

[0028] Figure 4 yes Figure 1 Cross-sectional view of the inner ring of the middle bearing;

[0029] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part A;

[0030] Figure 6 yes Figure 1 Schematic diagram of a medium absorbent sponge.

[0031] Description of reference numerals:

[0032] 1-bearing outer ring, 11-mounting groove, 2-bearing inner ring, 21-first water inlet, 22-second water inlet, 23-water outlet, 24-mounting protrusion, 3-water-absorbing sponge, 4-rolling element. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] In order to solve the technical problem in the prior art that the water-lubricated bearing cannot obtain the lubricating effect when in a waterless environment, thereby affecting the normal rotation of the water-lubricated bearing, the utility model provides a water-lubricated bearing that can lubricate the rolling elements in a short-term waterless environment to ensure that the bearing can rotate normally in a waterless environment.

[0035] See also Figure 1 , Figure 1 This is a schematic structural diagram of a water-lubricated bearing in one embodiment of the present utility model.

[0036] The utility model provides a water-lubricated bearing, comprising a bearing outer ring 1, a bearing inner ring 2, a water-absorbing sponge 3 and a rolling element 4, wherein the bearing inner ring 2 is arranged at intervals inside the bearing outer ring 1, the bearing inner ring 2 is provided with a receiving cavity and a water inlet connected to the receiving cavity, the bearing inner ring 2 is further provided with a water outlet 23 connected to the receiving cavity on the side facing the bearing outer ring 1, and the water outlet 23 is gradually expanded in the direction toward the bearing outer ring 1; the water-absorbing sponge 3 is arranged in the receiving cavity; and the rolling element 4 is arranged between the bearing outer ring 1 and the bearing inner ring 2.

[0037] In this example, see Figure 1 、 Figure 4 and Figure 5 A rolling element 4 is disposed between the bearing outer ring 1 and the bearing inner ring 2, enabling relative rotation between them. A water-absorbing sponge 3 is disposed within the bearing inner ring 2. When used in a watery environment, external water enters the accommodating chamber through the water inlet and is stored by the water-absorbing sponge 3. When the bearing is temporarily dry, water within the water-absorbing sponge 3 enters between the bearing outer ring 1 and the bearing inner ring 2 through the water outlet 23, thereby lubricating the rolling element 4 and ensuring the bearing can rotate normally in a dry environment. Furthermore, the water outlet 23 is arranged to gradually expand in the direction toward the bearing outer ring 1. This configuration allows water within the water-absorbing sponge 3 to quickly enter between the bearing outer ring 1 and the bearing inner ring 2, resulting in a more effective lubrication effect.

[0038] In one embodiment, see Figures 2 to 4 The water inlet includes a first water inlet 21 and a second water inlet 22. The first water inlet 21 is located on the side of the bearing inner ring 2 away from the bearing outer ring 1, and the second water inlet 22 is located on the side of the bearing inner ring 2 along its width direction.

[0039] In this embodiment, the bearing outer ring 1 and the bearing inner ring 2 are both arranged in an annular shape. For the convenience of explanation, the side of the bearing inner ring 2 facing the bearing outer ring 1 is the first side, the side of the bearing inner ring 2 away from the bearing outer ring 1 is the second side, and the two sides of the bearing inner ring 2 along the width direction are respectively the third side and the fourth side. Since the rolling element 4 is between the bearing outer ring 1 and the bearing inner ring 2, the water outlet 23 is located on the first side, the first water inlet 21 is located on the second side, and the second water inlet 22 is located on the third side and / or the fourth side. By arranging water inlets on the second side, the third side and the fourth side, the total water inlet area can be increased, thereby making it easier for external water to enter the accommodating cavity.

[0040] It can be understood that when in use, the bearing inner ring 2 is generally sleeved on the shaft. In order to avoid interference of the shaft with the first water inlet 21, a groove extending along its axial direction can be provided on the circumferential surface of the shaft. The groove corresponds to the first water inlet 21, thereby ensuring that external water can smoothly enter the accommodating cavity from the first water inlet 21.

[0041] In one embodiment, see Figure 5 The second water inlet 22 is arranged to gradually expand in the direction toward the accommodating cavity.

[0042] In this embodiment, the second water inlet 22 is located on the third side and the fourth side, and external water can directly enter the accommodating cavity from the second water inlet 22. In order to improve the water inlet efficiency, the second water inlet 22 is configured to gradually expand in the direction toward the accommodating cavity, that is, the second water inlet 22 is configured to be trumpet-shaped, so that external water can more easily enter the accommodating cavity.

[0043] In one embodiment, see Figures 2 to 4 There are multiple first water inlets 21, and the multiple first water inlets 21 are arranged in an array; there are multiple second water inlets 22, and the multiple second water inlets 22 are arranged at intervals along the circumference of the bearing inner ring 2.

[0044] In this embodiment, a plurality of the first water inlets 21 are arranged in an array on the second side, and the second water inlets 22 are evenly spaced on the third side and / or the fourth side. By increasing the number of the water inlets, the water intake can be guaranteed.

[0045] In one embodiment, see Figure 3 The bearing outer ring 1 is provided with an annular mounting groove 11 on the side facing the bearing inner ring 2, and the rolling element 4 is located in the mounting groove 11; the bearing inner ring 2 is provided with a mounting protrusion 24 adapted to the mounting groove 11 on the side facing the bearing outer ring 1, the mounting protrusion 24 is located in the mounting groove 11, and the water outlet 23 is located on the mounting protrusion 24.

[0046] In this embodiment, the mounting groove 11 and the mounting protrusion 24 are both annularly arranged and have matching sizes. The rolling element 4 is located in the mounting groove 11, and the surface of the rolling element 4 contacts the bottom of the mounting groove 11 and the mounting protrusion 24 respectively, thereby allowing the bearing outer ring 1 and the bearing inner ring 2 to rotate relative to each other. This arrangement facilitates the installation and disassembly of the bearing outer ring 1 and the bearing inner ring 2.

[0047] In one embodiment, two opposite sides of the mounting protrusion 24 are arranged in an arc shape.

[0048] In this embodiment, the bearing outer ring 1 and the bearing inner ring 2 are assembled by press-fitting. To ensure that the mounting protrusion 24 can be smoothly pressed into the mounting groove 11, the two opposite sides of the mounting protrusion 24 are arc-shaped.

[0049] In one embodiment, see Figure 5 and Figure 6 The accommodating cavity extends to the inside of the mounting protrusion 24, and the water-absorbing sponge 3 is adapted to the accommodating cavity.

[0050] In this embodiment, in order to increase the water output, the volume of the accommodating cavity can be appropriately increased. Therefore, the accommodating cavity can be extended to the inside of the mounting protrusion 24, thereby increasing the volume of the accommodating cavity, and then increasing the volume of the water-absorbing sponge 3 to increase the water storage capacity of the water-absorbing sponge 3.

[0051] In one embodiment, see Figure 2 and Figure 3 The rolling element 4 includes a rotating roller, and the rotating roller is adapted to the mounting groove 11.

[0052] In this embodiment, the length of the rotating roller is adapted to the width of the mounting groove 11, and the rotating roller is rotatably installed in the mounting groove 11 along its own axial direction. The surface of the rotating roller contacts the bottom of the mounting groove 11 and the surface of the mounting protrusion 24 respectively. By replacing the existing ball bearings with the rotating roller, the stability of the bearing can be improved, thereby ensuring the efficient use of the bearing.

[0053] In this embodiment, a plurality of rotating rollers are provided, and the plurality of rotating rollers are evenly spaced and arranged in the installation groove 11 .

[0054] In one embodiment, both ends of the rotating roller are rotatably mounted on two opposite side walls of the mounting groove 11 .

[0055] In this embodiment, shaft holes are provided on the opposite side walls of the mounting groove 11, and shafts are provided at the opposite ends of the rotating roller. The two shafts correspond one-to-one to the shaft holes, and the shafts are rotatably installed in the shaft holes, so that the rotating roller is rotatably installed in the mounting groove 11.

[0056] In one embodiment, see Figure 3 There are multiple water outlets 23, and the multiple water outlets 23 are arranged at intervals along the circumference of the bearing inner ring 2.

[0057] In this embodiment, in order to improve the water outlet efficiency, a plurality of water outlets 23 are provided, and the plurality of water outlets 23 are evenly distributed along the circumference of the mounting protrusion 24 .

[0058] In order to better understand the present invention, the following Figures 1 to 6 The technical solution of the utility model is described in detail:

[0059] When used in a water environment, external water will enter the accommodating cavity through the first water inlet 21 and the second water inlet 22 and be stored by the water-absorbing sponge 3. When the bearing is in a short-term waterless environment, the water in the water-absorbing sponge 3 will enter between the bearing outer ring 1 and the bearing inner ring 2 through the water outlet 23 under the action of centrifugal force, thereby lubricating the rolling element 4 and ensuring that the bearing can rotate normally in a waterless environment.

[0060] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A water-lubricated bearing, characterized in that: It includes: Bearing outer ring; A bearing inner ring, the bearing inner ring being spaced apart and disposed inside the bearing outer ring, the bearing inner ring being provided with an accommodating cavity and a water inlet communicating with the accommodating cavity, and the bearing inner ring being further provided with a water outlet communicating with the accommodating cavity on a side facing the bearing outer ring, the water outlet being arranged to gradually expand in a direction toward the bearing outer ring; a water-absorbing sponge, the water-absorbing sponge being disposed in the accommodating cavity; and A rolling element is provided between the bearing outer ring and the bearing inner ring.

2. The water-lubricated bearing according to claim 1, characterized in that: The water inlet includes a first water inlet and a second water inlet, the first water inlet is located on a side of the bearing inner ring away from the bearing outer ring, and the second water inlet is located on a side of the bearing inner ring along its width direction.

3. The water-lubricated bearing according to claim 2, characterized in that: The second water inlet is arranged to expand gradually in a direction toward the accommodating cavity.

4. The water-lubricated bearing according to claim 2, characterized in that: There are multiple first water inlets, and the multiple first water inlets are arranged in an array; There are multiple second water inlets, and the multiple second water inlets are arranged at intervals along the circumference of the bearing inner ring.

5. The water-lubricated bearing according to claim 1, characterized in that: A mounting groove in an annular shape is provided on one side of the bearing outer ring facing the bearing inner ring, and the rolling element is located in the mounting groove; A mounting protrusion adapted to the mounting groove is provided on a side of the bearing inner ring facing the bearing outer ring. The mounting protrusion is located in the mounting groove, and the water outlet is located on the mounting protrusion.

6. The water-lubricated bearing according to claim 5, characterized in that: The two opposite sides of the mounting protrusion are arranged in an arc shape.

7. The water-lubricated bearing according to claim 5, characterized in that: The accommodating cavity extends to the inside of the mounting protrusion, and the water-absorbing sponge is adapted to the accommodating cavity.

8. The water-lubricated bearing according to claim 5, characterized in that: The rolling element includes a rotating roller, and the rotating roller is adapted to the mounting groove.

9. The water-lubricated bearing according to claim 8, characterized in that: The two ends of the rotating roller are rotatably mounted on two opposite side walls of the mounting groove.

10. The water-lubricated bearing according to claim 1, characterized in that: There are multiple water outlets, and the multiple water outlets are arranged at intervals along the circumference of the bearing inner ring.

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