Bearing with base

Abstract

The utility model relates to the technical field of bearings, in particular to a bearing with a base. The bearing lubrication uniformity can be improved, the situation of uneven abrasion of a bearing body is effectively prevented, and the precision of the bearing body is guaranteed; the heat dissipation effect is improved, and bearing body abrasion is effectively reduced; comprising a seat body, a bearing body and a rotating shaft, an annular installation cavity matched with the outer diameter of the bearing body and an oil cavity communicated with the annular installation cavity are formed in the seat body, the bearing body is installed in the annular installation cavity in an interference mode, and the rotating shaft is installed in the bearing body in an interference mode. The multiple through holes are evenly distributed in the circumferential direction of the rotating shaft, and an oil injection heat dissipation channel communicating with the interior of the oil cavity is formed in the top of the base. A sealing ring is fixedly mounted at the joint of the rotating shaft and the inner wall of the oil cavity; a conical groove is formed in the side, close to the bearing body, of the sealing and retaining ring, and the large-caliber end of the conical groove faces the bearing body. Oil slinging teeth which are evenly distributed in the circumferential direction are arranged on the inner wall of the conical groove.

Description

Technical Field

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

[0002] Bearings are an important component in modern mechanical equipment; their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy; and when providing rotational support for shafts, seated bearings are often used.

[0003] A Chinese utility model patent discloses a bearing mechanism with a seat (publication number CN203176186U). The mechanism comprises a U-shaped bearing seat with a base, an oil nipple and an oil hole, and a bearing mounted within the U-shaped seat. The oil hole on the inner annular surface of the U-shaped seat is provided with an oil groove. The bearing has an annular oil groove along the outer ring surface, and the oil groove on the outer ring is provided with an oil hole. Reinforcement ribs are provided on the base of the U-shaped seat. This mechanism features unobstructed oil flow, good lubrication, and a long service life.

[0004] However, when the inventors implemented this device, they found the following defects: when used as a support bearing, the lubricating oil is concentrated at the bottom of the oil tank under the action of gravity, and the upper part of the bearing lacks lubrication, resulting in uneven bearing wear and affecting the accuracy of the bearing; and the temperature of the bearing rises during friction, and the above-mentioned seated bearing has poor heat dissipation performance, which undoubtedly accelerates the wear of the bearing. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the utility model provides a bearing with a base that improves the uniformity of bearing lubrication, effectively prevents uneven wear of the bearing body, ensures the accuracy of the bearing body, improves the heat dissipation effect, and effectively reduces the wear of the bearing body.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bearing with a base, comprising a seat body, a bearing body and a rotating shaft, the seat body being provided with an annular mounting cavity that matches the outer diameter of the bearing body and an oil cavity communicating with the annular mounting cavity, the bearing body being interference-mounted in the annular mounting cavity, the rotating shaft being interference-mounted in the bearing body, the rotating shaft being provided with a hollow cavity and a plurality of through holes for connecting the oil cavity and the hollow cavity, the plurality of through holes being evenly distributed around the circumference of the rotating shaft, the top of the seat body being provided with an oil injection and heat dissipation channel communicating with the interior of the oil cavity; further, the central axis of the through hole being arranged along the radial direction of the rotating shaft; the bearing body being located in the middle of the oil cavity, the through holes being in two groups, and the two groups of through holes being located on both sides of the bearing body respectively; the lowest liquid level of the lubricating oil in the oil cavity being at least 5 mm higher than the bottom of the hollow cavity.

[0009] Preferably, a sealing ring is fixedly installed at the junction of the rotating shaft and the inner wall of the oil chamber.

[0010] Preferably, a tapered groove is provided on a side of the sealing ring adjacent to the bearing body, and a large-diameter end of the tapered groove faces the bearing body.

[0011] Preferably, the inner wall of the tapered groove is provided with oil-slinging teeth uniformly distributed in the circumferential direction.

[0012] Preferably, the seat body is divided into an upper shell and a lower shell, and the upper shell and the lower shell are detachably connected by bolts.

[0013] Preferably, an annular embedding groove is provided on the end of the sealing ring away from the bearing body, and a sealing ring is interference-fitted in the annular embedding groove; further, the sealing ring can be made of graphite or other equivalent materials with good wear-resistant sealing effect such as polytetrafluoroethylene.

[0014] Preferably, the inner diameter of the sealing ring is larger than the outer diameter of the rotating shaft, and the sealing ring is in rotational sealing contact with the inner wall of the oil chamber through the sealing ring.

[0015] Preferably, a keyway is provided on the rotating shaft, and a shaft key is interference-fitted in the keyway.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the utility model provides a bearing with a base, which has the following beneficial effects: lubricating oil is injected into the oil cavity through the oil filling and heat dissipation channel, part of the lubricating oil enters the hollow cavity, and the upper part of the hollow cavity is above the lubricating oil liquid level. During the rotation of the shaft, the lubricating oil in the hollow cavity is thrown out at high speed through the through hole under the action of centrifugal force. The lubricating oil after being thrown out contacts the upper part of the inner wall of the oil cavity and then disperses and splashes. Part of the splashed lubricating oil falls to the upper part of the bearing body and lubricates the upper part of the bearing body. At the same time, the splashing lubricating oil can effectively dissipate heat, and the heat can be dissipated outward through the oil filling and heat dissipation channel, thereby improving the uniformity of bearing lubrication, effectively preventing uneven wear of the bearing body, and ensuring the accuracy of the bearing body; improving the heat dissipation effect and effectively reducing the wear of the bearing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the exploded three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the top plan structure of the utility model;

[0020] Figure 3 This utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0021] Figure 4 This utility model Figure 2 Schematic diagram of the cross-section structure at the middle BB;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotating shaft of the utility model;

[0023] Figure 6 It is a three-dimensional structural diagram of the utility model;

[0024] Markings in the accompanying drawings: 1. Bearing body; 2. Rotating shaft; 3. Annular mounting cavity; 4. Oil cavity; 5. Hollow cavity; 6. Through hole; 7. Oil injection and heat dissipation channel; 8. Sealing ring; 9. Conical groove; 10. Oil-throwing tooth; 11. Upper shell; 12. Lower shell; 13. Annular embedded groove; 14. Sealing ring; 15. Keyway; 16. Shaft key. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-4 The utility model is a bearing with a base, comprising a seat body, a bearing body 1 and a rotating shaft 2. The seat body is provided with an annular mounting cavity 3 that matches the outer diameter of the bearing body 1 and an oil cavity 4 communicating with the annular mounting cavity 3. The bearing body 1 is interference-mounted in the annular mounting cavity 3, and the rotating shaft 2 is interference-mounted in the bearing body 1. A hollow cavity 5 and a plurality of through holes 6 for communicating the oil cavity 4 and the hollow cavity 5 are provided on the rotating shaft 2. The multiple through holes 6 are evenly distributed circumferentially around the rotating shaft 2, and an oil injection and heat dissipation channel 7 communicating with the interior of the oil cavity 4 is provided on the top of the seat body; further, the central axis of the through hole 6 is arranged along the radial direction of the rotating shaft 2; the bearing body 1 is located in the middle of the oil cavity 4, and the through holes 6 are two groups, and the two groups of through holes 6 are respectively located on both sides of the bearing body 1; the lowest liquid level of the lubricating oil in the oil cavity 4 is at least 5 mm higher than the bottom of the hollow cavity 5.

[0028] For details, please refer to Figure 5 A sealing ring 8 is fixedly installed at the junction of the rotating shaft 2 and the inner wall of the oil chamber 4.

[0029] The bearing with a base provided in this embodiment has a sealing ring 8 that not only has a rotational sealing effect on the connection between the rotating shaft 2 and the oil chamber 4, but can also effectively prevent the rotating shaft 2 from moving along the axial direction of the rotating shaft 2, thereby effectively preventing the bearing body 1 from moving or tilting in the axial direction during use, further ensuring the installation accuracy of the bearing body 1 and the stability of the bearing body 1 during rotation, avoiding the bearing body 1 from shaking left and right in the vertical direction during rotation, and reducing the wear of the bearing body 1.

[0030] Example 2

[0031] The bearing with base provided in Example 1 is further optimized; for details, please refer to Figure 4-5 ; An annular embedding groove 13 is provided on the end of the sealing ring 8 away from the bearing body 1, and a sealing ring 14 is interference-fitted in the annular embedding groove 13; further, the sealing ring 14 can be made of graphite material, or other equivalent materials with good wear-resistant sealing effect such as polytetrafluoroethylene.

[0032] The inner diameter of the sealing ring 14 is larger than the outer diameter of the rotating shaft 2 , and the sealing ring 8 is in rotational sealing contact with the inner wall of the oil chamber 4 through the sealing ring 14 .

[0033] A tapered groove 9 is provided on the side of the sealing ring 8 adjacent to the bearing body 1 , and the large-diameter end of the tapered groove 9 faces the bearing body 1 .

[0034] The inner wall of the conical groove 9 is provided with oil-slinging teeth 10 evenly distributed in the circumferential direction.

[0035] The bearing with a base provided in this embodiment can avoid direct contact between the sealing ring 8 and the inner wall of the oil chamber 4 under the action of the sealing ring 14, thereby effectively reducing the wear of the sealing ring 8; when the sealing ring 14 has been used for a period of time, the sealing ring 14 can be replaced; and the inner diameter of the sealing ring 14 is larger than the outer diameter of the rotating shaft 2, which can achieve comprehensive sealing of the circumference of the rotating shaft 2 to prevent the lubricating oil from flowing out through the connection between the outer wall of the rotating shaft 2 and the inner wall of the oil chamber 4; and during the rotation of the rotating shaft 2, the conical groove 9 can guide the throwing direction of the lubricating oil, so that the lubricating oil falls accurately to the bearing body 1, so as to increase the probability of contact between the lubricating oil and the bearing body 1, so as to improve the lubricating effect of the lubricating oil on the upper part of the bearing body 1; and the oil-slinging teeth 10 can increase the viscosity of the lubricating oil in the conical groove 9 while further improving the splash dispersion effect of the lubrication.

[0036] Example 3

[0037] For details, please refer to Figure 1 or Figure 6 The seat body is divided into an upper shell 11 and a lower shell 12, and the upper shell 11 and the lower shell 12 are detachably connected by bolts.

[0038] For details, please refer to Figure 5A keyway 15 is provided on the rotating shaft 2, and a shaft key 16 is interference-fitted in the keyway 15.

[0039] The bearing with a base provided in this embodiment can separate the upper shell 11 and the lower shell 12 when the bearing body 1 is installed on the seat body. After the bearing body 1 is installed in the lower shell 12, the upper shell 11 and the lower shell 12 are covered, which can improve the convenience of disassembly and assembly between the bearing body 1 and the seat body; and the keyway 15 and the shaft key 16 can facilitate the disassembly and assembly of the rotating shaft 2 and the external connecting shaft.

[0040] During use, the lubricating oil is injected into the oil chamber 4 through the oil filling and heat dissipation channel 7, and part of the lubricating oil enters the hollow cavity 5. The upper part of the hollow cavity 5 is above the lubricating oil liquid level. During the rotation of the rotating shaft 2, the lubricating oil in the hollow cavity 5 is thrown out at high speed through the through hole 6 under the action of centrifugal force. The lubricating oil after being thrown out is guided by the conical groove 9 and contacts the upper part of the bearing body 1 and then dispersed and splashed. The lubricating oil lubricates the upper part of the bearing body 1. At the same time, the splashing lubricating oil can effectively dissipate heat, and the heat can be dissipated outward through the oil filling and heat dissipation channel 7.

[0041] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bearing with a base, characterized in that; The invention comprises a seat body, a bearing body (1) and a rotating shaft (2); the seat body is provided with an annular mounting cavity (3) which matches the outer diameter of the bearing body (1) and an oil cavity (4) which communicates with the annular mounting cavity (3); the bearing body (1) is interference-mounted in the annular mounting cavity (3); the rotating shaft (2) is interference-mounted in the bearing body (1); the rotating shaft (2) is provided with a hollow cavity (5) and a plurality of through holes (6) for communicating with the oil cavity (4) and the hollow cavity (5); the plurality of through holes (6) are uniformly distributed around the rotating shaft (2); and the top of the seat body is provided with an oil injection and heat dissipation channel (7) which communicates with the interior of the oil cavity (4).

2. The bearing with base according to claim 1, characterized in that: A sealing ring (8) is fixedly installed at the junction between the rotating shaft (2) and the inner wall of the oil chamber (4).

3. The bearing with base according to claim 2, characterized in that: The sealing ring (8) is provided with a tapered groove (9) on one side adjacent to the bearing body (1), and the large-diameter end of the tapered groove (9) faces the bearing body (1).

4. The bearing with base according to claim 3, characterized in that: The inner wall of the conical groove (9) is provided with oil-slinging teeth (10) uniformly distributed in the circumferential direction.

5. The bearing with a base according to claim 1, characterized in that: The seat body is divided into an upper shell (11) and a lower shell (12), and the upper shell (11) and the lower shell (12) are detachably connected by bolts.

6. The bearing with a base according to claim 2, characterized in that: An annular embedding groove (13) is provided on one end of the sealing ring (8) away from the bearing body (1), and a sealing ring (14) is interference-fitted into the annular embedding groove (13).

7. The bearing with base according to claim 6, characterized in that: The inner diameter of the sealing ring (14) is larger than the outer diameter of the rotating shaft (2), and the blocking ring (8) is in rotating sealing contact with the inner wall of the oil chamber (4) through the sealing ring (14).

8. The bearing with a base according to claim 1, characterized in that: A keyway (15) is provided on the rotating shaft (2), and a shaft key (16) is interference-fitted in the keyway (15).

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