Wear-resistant knuckle bearing

Abstract

The utility model discloses a wear-resistant knuckle bearing which comprises a bearing outer ring, a bearing inner ring is arranged in the bearing outer ring, a first steel ball groove is formed in the bearing inner ring, and a plurality of steel balls are arranged in the first steel ball groove. An oil injection channel, an oil injection hole, a first oil flowing hole, an oil storage cavity, a plurality of second oil flowing holes and a second steel ball groove are formed in the bearing outer ring, the oil injection hole penetrates through the side wall between the bearing outer ring and the oil injection channel, the first oil flowing hole penetrates through the side wall between the oil storage cavity and the oil injection channel, the longitudinal section of the oil storage cavity is annularly arranged, and the second steel ball groove is formed in the side wall between the oil storage cavity and the oil injection channel. The multiple second oil flowing holes penetrate through the side wall between the oil storage cavity and the second steel ball groove, a plugging structure is arranged in the oil injection channel, a shaft rod is fixedly connected to the bottom side wall of the bearing outer ring, and the outer surface of the shaft rod is arranged in a threaded mode. According to the utility model, the lubricant adding frequency is reduced, the labor intensity of workers is reduced, and the service life of steel balls is prolonged.

Description

Technical Field

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

[0002] The bearing is mainly composed of a special structure of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. It can withstand large loads. Depending on its type and structure, it can withstand radial loads, axial loads, or combined loads of radial and axial loads.

[0003] For example, Chinese patent application No. 202222940661.5 discloses a new type of spherical bearing, which includes a shaft, a first outer ring is fixedly connected to the shaft, the first outer ring is clamped under the second outer ring, an inner ring is adjusted inside the first outer ring, a slide groove is provided on the first outer ring, a clamping plate is provided under the second outer ring, and a screw is provided on the side of the first outer ring. The new type of spherical bearing is provided with a slide groove, a clamping plate, a mounting hole and a screw. When the second outer ring and the first outer ring are stably clamped, the screw is threadedly connected to the mounting hole through the screw, so that the first outer ring and the second outer ring can be fixed. The spherical bearing can quickly assemble the first outer ring and the second outer ring through the cooperation between the clamping plate, the mounting hole and the screw. When the spherical bearing is damaged, it is convenient to replace its components, which not only reduces unnecessary processing costs, but also ensures the applicability of the spherical bearing.

[0004] In the above scheme, although balls are added to reduce friction, the friction resistance increases during long-term high-speed operation and swinging movement, which will also cause certain wear on the balls. In order to solve the above problems, we designed a wear-resistant spherical bearing. Utility Model Content

[0005] The utility model provides a wear-resistant spherical bearing to solve the problems raised in the above background technology.

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

[0007] A wear-resistant spherical bearing comprises a bearing outer ring, a bearing inner ring is arranged inside the bearing outer ring, a first steel ball groove is provided on the bearing inner ring, a plurality of steel balls are arranged in the first steel ball groove, an oil filling passage, an oil filling hole, a first oil flow hole, an oil storage cavity, a plurality of second oil flow holes and a second steel ball groove are provided on the bearing outer ring, the oil filling hole penetrates the side wall between the bearing outer ring and the oil filling passage, the first oil flow hole penetrates the side wall between the oil storage cavity and the oil filling passage, the longitudinal section of the oil storage cavity is annular, a plurality of second oil flow holes all penetrate the side wall between the oil storage cavity and the second steel ball groove, a sealing structure is provided in the oil filling passage, a shaft rod is fixedly connected to the bottom side wall of the bearing outer ring, and the outer surface of the shaft rod is threaded.

[0008] Preferably, the blocking structure comprises a squeeze spring, the squeeze spring is fixedly connected to the bottom side wall of the oil filling channel, and one end of the squeeze spring is fixedly connected to a blocking ball.

[0009] Preferably, the blocking ball is hollow.

[0010] Preferably, the aperture size of the second oil flow hole close to the first oil flow hole is smaller than the aperture size of the second oil flow hole far from the first oil flow hole.

[0011] Preferably, the outer ring of the bearing is provided with two dustproof grooves which are arranged opposite to each other, and the longitudinal section of the dustproof grooves is arranged in an annular shape, and the outer side wall of the inner ring of the bearing is fixedly connected with two dustproof covers which are arranged opposite to each other, and the longitudinal sections of the two dustproof covers are arranged in an annular shape.

[0012] Preferably, the steel ball is a sphere with a diameter of 0.5 cm.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The oil storage chamber can be provided to store a certain amount of lubricant to lubricate the steel ball and the first steel ball groove and the second steel ball groove, thereby increasing the service life of the steel ball; one end of the oil filling hole can be blocked by the extrusion spring and the sealing ball, which makes it convenient to add lubricant inside and prevent lubricant leakage. This device reduces the frequency of adding lubricant, reduces the labor intensity of workers, and increases the service life of the steel ball.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a wear-resistant spherical bearing proposed by the utility model;

[0018] Figure 2 This is a side structural schematic diagram of a wear-resistant spherical bearing proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a front cross-sectional structure of a wear-resistant spherical plain bearing proposed by the utility model;

[0020] Figure 4 for Figure 2 A magnified view of the local structure.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Bearing outer ring; 2. Bearing inner ring; 3. First steel ball groove; 4. Steel ball; 5. Second steel ball groove; 6. Oil filling channel; 7. Oil filling hole; 8. First oil flow hole; 9. Extrusion spring; 10. Sealing ball; 11. Oil storage chamber; 12. Second oil flow hole; 13. Shaft; 14. Dustproof groove; 15. Dustproof cover. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figure 1-4 In an embodiment of the utility model, a wear-resistant spherical bearing comprises a bearing outer ring 1, a bearing inner ring 2 is arranged in the bearing outer ring 1, a first steel ball groove 3 is opened on the bearing inner ring 2, a plurality of steel balls 4 are arranged in the first steel ball groove 3, an oil filling channel 6, an oil filling hole 7, a first oil flow hole 8, an oil storage cavity 11, a plurality of second oil flow holes 12 and a second steel ball groove 5 are opened on the bearing outer ring 1, the oil filling hole 7 penetrates the side wall between the bearing outer ring 1 and the oil filling channel 6, the first oil flow hole 8 penetrates the side wall between the oil storage cavity 11 and the oil filling channel 6, the longitudinal section of the oil storage cavity 11 is annular, the plurality of second oil flow holes 12 all penetrate the side wall between the oil storage cavity 11 and the second steel ball groove 5, a blocking structure is arranged in the oil filling channel 6, and a shaft rod 13 is fixedly connected to the bottom side wall of the bearing outer ring 1, and the outer surface of the shaft rod 13 is threaded.

[0027] In an optional embodiment, the blocking structure includes an extrusion spring 9 , which is fixedly connected to the bottom side wall of the oil filling channel 6 , and a blocking ball 10 is fixedly connected to one end of the extrusion spring 9 .

[0028] It should be noted that the bottom end of the oil filling hole 7 is blocked by squeezing the spring 9 with the blocking ball 10, so as to store a certain amount of lubricant, reduce the frequency of adding lubricant, and increase the service life of the steel ball 4.

[0029] In an optional embodiment, the blocking ball 10 is hollow.

[0030] It should be noted that reducing the weight of the blocking ball 10 reduces the pressure on the pressing spring 9 .

[0031] In an optional embodiment, the aperture size of the second oil flow hole 12 close to the first oil flow hole 8 is smaller than the aperture size of the second oil flow hole 12 far from the first oil flow hole 8 .

[0032] It should be noted that the smaller the diameter, the slower the oil inlet speed, so that the lubricant can flow to the other second oil flow holes 12 and enter the second steel ball groove 5 more evenly.

[0033] In an optional embodiment, two dustproof grooves 14 are arranged opposite to each other on the outer ring 1 of the bearing, and the longitudinal section of the dustproof groove 14 is annular. Two dustproof covers 15 are fixedly connected to the outer wall of the inner ring 2 of the bearing, and the longitudinal sections of the two dustproof covers 15 are annular.

[0034] It should be noted that the dust cover 14 can play a dustproof and sealing effect.

[0035] In an optional embodiment, the steel ball 4 is a sphere with a diameter of 0.5 cm.

[0036] It should be noted that the diameter of the steel ball 4 can be selected to a suitable size according to the specific application and environment.

[0037] The working principle of the utility model is: the mouth of the lubricant is poked into the oil filling hole 7 and extended into the oil filling channel 6, and the blocking ball 10 is squeezed and moved downward. At this time, the oil filling hole 7, the oil filling channel 6 and the first oil flow hole 8 are connected, and the lubricant enters the oil storage chamber 11, and finally enters the second steel ball groove 5 along the multiple second oil flow holes 12 to lubricate the steel balls 4 and the side walls of the first steel ball groove 3 and the second steel ball groove 5, and the bottom end of the oil filling hole 7 is blocked by the blocking ball 10 through the extrusion spring 9, so as to store a certain amount of lubricant, reduce the frequency of adding lubricant, and increase the service life of the steel balls 4. The dust cover 14 can play a dustproof sealing effect.

[0038] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A wear-resistant spherical plain bearing, comprising a bearing outer ring (1), characterized in that: The bearing outer ring (1) is provided with a bearing inner ring (2), the bearing inner ring (2) is provided with a first steel ball groove (3), a plurality of steel balls (4) are provided in the first steel ball groove (3), the bearing outer ring (1) is provided with an oil injection channel (6), an oil injection hole (7), a first oil flow hole (8), an oil storage cavity (11), a plurality of second oil flow holes (12) and a second steel ball groove (5), the oil injection hole (7) passes through the bearing outer ring (1) and the oil injection channel (6). The first oil flow hole (8) penetrates the side wall between the oil storage chamber (11) and the oil injection channel (6); the longitudinal section of the oil storage chamber (11) is annular; a plurality of the second oil flow holes (12) all penetrate the side wall between the oil storage chamber (11) and the second steel ball groove (5); a sealing structure is provided in the oil injection channel (6); a shaft rod (13) is fixedly connected to the bottom side wall of the bearing outer ring (1); and the outer surface of the shaft rod (13) is threaded.

2. A wear-resistant spherical plain bearing according to claim 1, characterized in that: The blocking structure comprises a squeeze spring (9), the squeeze spring (9) being fixedly connected to the bottom side wall of the oil filling channel (6), and one end of the squeeze spring (9) being fixedly connected to a blocking ball (10).

3. A wear-resistant spherical plain bearing according to claim 2, characterized in that: The blocking ball (10) is hollow.

4. The wear-resistant spherical plain bearing according to claim 1, characterized in that: The aperture size of the second oil flow hole (12) closer to the first oil flow hole (8) is smaller than the aperture size of the second oil flow hole (12) farther from the first oil flow hole (8).

5. The wear-resistant spherical plain bearing according to claim 3, characterized in that: The outer ring (1) of the bearing is provided with two dustproof grooves (14) which are arranged opposite to each other, and the longitudinal section of the dustproof grooves (14) is arranged in an annular shape. The outer side wall of the inner ring (2) of the bearing is fixedly connected with two dustproof covers (15) which are arranged opposite to each other, and the longitudinal sections of the two dustproof covers (15) are arranged in an annular shape.

6. The wear-resistant spherical plain bearing according to claim 2, characterized in that: The steel ball (4) is a spherical body with a diameter of 0.5 cm.

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