Four-point contact ball bearing

Abstract

The utility model discloses a four-point contact ball bearing which comprises an inner ring, a retaining plate and an outer ring, wherein the retaining plate and the outer ring are sequentially arranged outside the inner ring; the shielding and limiting structure is arranged on the outer side of the inner ring and comprises a heat dissipation plate, an outer ring and a locking screw; a sealing leakage-proof structure is arranged in the heat dissipation plate and the outer ring; the sealing leakage-proof structure comprises a first sealing gasket, a second sealing gasket and a third sealing gasket; each of the inner ring, the retaining plate and the outer ring is composed of a reinforcing rib, a stainless steel plate and a ceramic coating; and centrosymmetric steel balls are arranged on the inner side of the retaining plate in an embedded and attached mode, the inner side and the outer side of each steel ball single body are connected with the inner ring and the outer ring in an attached mode respectively, and the outer ring is arranged outside the inner ring and the retaining plate in an embedded and attached mode. According to the four-point contact ball bearing, the bearing can be assembled and used conveniently, the sealing performance and the heat dissipation effect of the bearing can be guaranteed conveniently, and the bearing can have high load bearing capacity and wear resistance conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a four-point contact ball bearing. Background Art

[0002] Bearings are an important component in mechanical equipment. They mainly support mechanical rotation and reduce friction. Among them, four-point contact ball bearings are a type of separable bearings. The inner and outer ring raceways are peach-shaped cross-sections. When there is no load or a pure radial load is applied, the steel ball and the ring are in four-point contact.

[0003] For example, a Chinese utility model patent with authorization announcement number CN210371631U discloses a four-point contact ball bearing, including an outer ring, an inner ring, rolling elements and a retaining cage, wherein the rolling elements are respectively installed in the pockets of the retaining cage, and the rolling elements are fixed by the outer ring and the inner ring, an outer ring compensation position is provided on the inner side of the outer ring, an outer ring compensation ring plate can be installed on the outer ring compensation position, and the outer ring compensation plate cooperates with the outer ring to form an outer raceway; an inner ring compensation position is provided on the outer side of the inner ring, an inner ring compensation ring plate can be installed on the inner ring compensation position, and the inner ring compensation ring plate cooperates with the inner ring to form an inner raceway; the rolling elements are fixed by the outer raceway and the inner raceway, and the utility model adopts an outer ring compensation ring plate and an inner ring compensation ring plate to match the inner ring and the outer ring, which simplifies the installation while making the inner ring and the outer ring firmly connected to the retaining cage and the rolling elements, and the entire bearing is an integrated structure after assembly, without the need for assistance from other fixed structures, and is very practical.

[0004] However, the existing four-point contact ball bearings are generally not convenient to assemble and use during use, and it is difficult to ensure the sealing and heat dissipation effects of the bearings, and the load bearing capacity and wear resistance are limited. Therefore, we propose a four-point contact ball bearing to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a four-point contact ball bearing to solve the problems of the existing four-point contact ball bearings mentioned in the above background technology, which are generally not convenient to assemble and use during use, and it is difficult to ensure the sealing and heat dissipation effects of the bearings, as well as having limited load bearing capacity and wear resistance.

[0006] To achieve the above object, the utility model provides the following technical solution: a four-point contact ball bearing, comprising: an inner ring, a retaining plate and an outer ring sequentially arranged outside the inner ring;

[0007] Also includes:

[0008] A shielding and limiting structure is arranged on the outer side of the inner ring, wherein the shielding and limiting structure comprises a heat dissipation plate, an outer ring and a locking screw;

[0009] The heat dissipation plate and the outer ring are provided with a sealing and leak-proof structure, wherein the sealing and leak-proof structure comprises a first sealing gasket, a second sealing gasket and a third sealing gasket;

[0010] The inner ring, the retaining plate and the outer ring are all composed of reinforcing ribs, stainless steel plates and ceramic coatings.

[0011] Preferably, the inner side of the retaining plate is nested and fitted with centrally symmetrical steel balls, and the inner and outer sides of the steel ball monomers are respectively fitted and connected to the inner ring and the outer ring, and the outer ring is nested and fitted outside the inner ring and the retaining plate.

[0012] Preferably, the heat sink is fitted on the front sides of the inner ring, the retaining plate and the outer ring, and is fixedly connected to the outer ring by locking screws, and the inner diameters of the heat sink and the outer ring are larger than the inner diameter of the inner ring.

[0013] Preferably, a first sealing gasket tightly fitted with the inner ring is glued and fixed to the inner side of the outer ring, and a third sealing gasket and a second sealing gasket are tightly fitted on the front sides of the inner ring and the outer ring respectively, and the second sealing gasket and the third sealing gasket are glued and fixedly connected to the heat sink.

[0014] Preferably, a centrally symmetrical heat dissipation groove is provided inside the front end of the heat dissipation plate, and the heat dissipation groove and the locking screws are staggered.

[0015] Preferably, the reinforcing ribs are located on the inner side of the middle parts of the inner ring, the retaining plate and the outer ring, and the outside of the reinforcing ribs are fixedly connected with a stainless steel plate and a ceramic coating in sequence.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the four-point contact ball bearing is convenient for assembly and use, convenient for ensuring the sealing and heat dissipation effect of the bearing, and convenient for making the bearing have higher load bearing capacity and wear resistance;

[0017] 1. An inner ring, a retaining plate, steel balls and a heat sink are provided. Since the outer side of the inner ring is nested with a retaining plate and an outer ring in sequence, the inner side of the retaining plate is symmetrically nested with steel balls that fit with the inner ring and the outer ring, and the front side of the inner ring is fitted with a heat sink that is fixed to the outer ring via locking screws, it is convenient to assemble and use the bearing;

[0018] 2. An inner ring, an outer ring, a first sealing gasket and a second sealing gasket are provided. The first sealing gasket which is closely fitted with the inner ring is fixed to the inner front side of the outer ring, and the third sealing gasket and the second sealing gasket which are closely fitted with the inner ring and the outer ring are fixed to the rear side of the outer ring. In addition, the heat dissipation grooves which are staggered with the locking screws are symmetrically provided in the center of the front end of the heat dissipation plate. Therefore, the sealing and heat dissipation effect of the bearing are ensured.

[0019] 3. An inner ring, a reinforcing rib, a stainless steel plate and a ceramic coating are provided. Since the inner ring, the retaining plate and the outer ring are all composed of the reinforcing rib, the stainless steel plate and the ceramic coating, the stainless steel plate and the ceramic coating are fixed to the outside of the reinforcing rib in sequence, so that the bearing has a higher load bearing capacity and wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0022] Figure 3 This is a rear view structural diagram of the utility model;

[0023] Figure 4 It is a schematic diagram of the internal structure of the inner ring of the utility model.

[0024] In the figure: 1. inner ring; 2. retaining plate; 3. steel ball; 4. heat sink; 5. outer ring; 6. locking screw; 7. first sealing gasket; 8. second sealing gasket; 9. third sealing gasket; 10. heat sink; 11. reinforcing rib; 12. stainless steel plate; 13. ceramic coating. DETAILED DESCRIPTION

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

[0026] See also Figure 1-4 The utility model provides a technical solution: a four-point contact ball bearing, comprising an inner ring 1, a retaining plate 2, a steel ball 3, a heat dissipation plate 4, an outer ring 5, a locking screw 6, a first sealing gasket 7, a second sealing gasket 8, a third sealing gasket 9, a heat dissipation groove 10, a reinforcing rib 11, a stainless steel plate 12 and a ceramic coating 13. When the four-point contact ball bearing is used, Figure 1 , Figure 2 and Figure 3First, the retaining plate 2 can be nested inside the outer ring 5, and then the steel ball 3 can be nested and fitted inside the retaining plate 2 in a symmetrical manner. Then, the inner ring 1 can be nested inside the retaining plate 2, so that the inner and outer sides of the steel ball 3 are tightly fitted and connected with the inner ring 1 and the outer ring 5 respectively. Then, the cooling lubricating oil can be injected into the inner ring 1, the outer ring 5 and the inner side of the retaining plate 2. After the injection, the heat sink 4 can be fitted to the front side of the inner ring 1, the retaining plate 2 and the outer ring 5, and the heat sink 4 can be fixedly connected with the outer ring 5 by the locking screws 6, so as to facilitate the assembly of the bearing for use;

[0027] like Figure 1 , Figure 2 and Figure 3 During the use of the bearing, a first sealing gasket 7 that is adhered and fixed to the outer ring 5 is tightly fitted on the rear side of the inner ring 1, so that the sealing performance of the connection between the inner ring 1 and the outer ring 5 can be ensured through the first sealing gasket 7. A third sealing gasket 9 and a second sealing gasket 8 that are adhered and fixed to the heat sink 4 are tightly fitted on the front sides of the inner ring 1 and the outer ring 5, respectively, so that the sealing of the connection between the heat sink 4 and the steel ball 3 and the heat sink 4 and the inner ring 1 can be ensured through the second sealing gasket 8 and the third sealing gasket 9, respectively, so as to ensure the sealing of the bearing and seal the cooling lubricating oil therein. A heat dissipation groove 10 that is staggered with the locking screw 6 is symmetrically provided through the center of the front end of the heat sink 4. Therefore, the heat dissipation effect of the bearing can be ensured under the cooling performance of the cooling lubricating oil by increasing the area of ​​the heat dissipation groove 10 and the heat dissipation performance of the heat sink 4 itself;

[0028] like Figure 1 , Figure 2 and Figure 4 , and through the arrangement of the steel ball 3 and the cooling lubricating oil, it is convenient for the inner ring 1 to rotate under the limit of the heat sink 4 and the outer ring 5, and the retaining plate 2 and the outer ring 5 are both composed of a reinforcing rib 11, a stainless steel plate 12 and a ceramic coating 13, and the stainless steel plate 12 and the ceramic coating 13 are fixed to the outside of the reinforcing rib 11 in sequence. Therefore, through the arrangement of the reinforcing rib 11, the bearing has a higher load-bearing capacity, and through the arrangement of the ceramic coating 13, the bearing has a higher wear resistance, thereby extending its service life. The above components are all prior art and will not be described in detail here.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A four-point contact ball bearing, comprising: An inner ring (1), a retaining plate (2) and an outer ring (5) arranged in sequence outside the inner ring (1); It is characterized by further comprising: A shielding and limiting structure is arranged on the outer side of the inner ring (1), wherein the shielding and limiting structure comprises a heat dissipation plate (4), an outer ring (5) and a locking screw (6); The heat dissipation plate (4) and the outer ring (5) are provided with a sealing and leak-proof structure, wherein the sealing and leak-proof structure comprises a first sealing gasket (7), a second sealing gasket (8) and a third sealing gasket (9); The inner ring (1), the retaining plate (2) and the outer ring (5) are all composed of reinforcing ribs (11), stainless steel plates (12) and ceramic coatings (13).

2. A four-point contact ball bearing according to claim 1, characterized in that: The inner side of the retaining plate (2) is nested and fitted with a centrally symmetrical steel ball (3), and the inner and outer sides of the steel ball (3) are respectively fitted and connected to the inner ring (1) and the outer ring (5), and the outer ring (5) is nested and fitted outside the inner ring (1) and the retaining plate (2).

3. A four-point contact ball bearing according to claim 1, characterized in that: The heat sink (4) is arranged in close contact with the front sides of the inner ring (1), the retaining plate (2) and the outer ring (5), and the heat sink (4) is fixedly connected to the outer ring (5) via a locking screw (6), and the inner diameters of the heat sink (4) and the outer ring (5) are larger than the inner diameter of the inner ring (1).

4. A four-point contact ball bearing according to claim 1, characterized in that: A first sealing gasket (7) is glued and fixed to the inner side of the outer ring (5) and is tightly fitted with the inner ring (1), and a third sealing gasket (9) and a second sealing gasket (8) are tightly fitted on the front sides of the inner ring (1) and the outer ring (5), respectively, and the second sealing gasket (8) and the third sealing gasket (9) are both glued and fixedly connected to the heat sink (4).

5. A four-point contact ball bearing according to claim 1, characterized in that: A centrally symmetrical heat dissipation groove (10) is provided inside the front end of the heat dissipation plate (4), and the heat dissipation groove (10) and the locking screws (6) are arranged in a staggered manner.

6. A four-point contact ball bearing according to claim 1, characterized in that: The reinforcing rib (11) is located on the inner side of the middle of the inner ring (1), the retaining plate (2) and the outer ring (5), and a stainless steel plate (12) and a ceramic coating (13) are fixedly connected to the outside of the reinforcing rib (11) in sequence.

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