Thin-wall bearing

Abstract

The utility model relates to the technical field of bearings, and discloses a thin-wall bearing which comprises an inner ring and an outer ring, the inner ring is sleeved with the outer ring, the width of the outer ring is smaller than that of the inner ring, a plurality of first ball grooves are formed in the outer side wall of the inner ring at equal intervals, and a first ball is arranged in each first ball groove. The inner ring, the outer ring, the bottom ring plate, the top ring plate, the positioning assembly and the connecting assembly are arranged, the inner ring is located in the outer ring, the bottom ring plate and the top ring plate are located at the bottoms and the tops of the inner ring and the outer ring respectively, the bottom ring plate and the top ring plate can be fixedly connected through the connecting assembly, and therefore the bottom ring plate and the top ring plate are used for extruding and positioning the inner ring and the outer ring; the positioning assemblies on the surface of the bottom ring plate can extrude and further position the first balls on the outer side wall of the inner ring, and when the inner ring or the outer ring of the bearing is seriously abraded or deformed, the inner ring or the outer ring can be conveniently and independently replaced, so that the use cost of the thin-wall bearing is reduced.

Description

Technical Field

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

[0002] Thin-walled ball bearings have an inside-to-outside diameter ratio less than a specified value. A bearing with an outside-to-inside diameter ratio of 1.25 or less is considered a thin-walled ball bearing, indicating a very small outside-to-inside diameter ratio and thin bearing walls. Thin-walled ball bearings offer a simple structure and are easy to use. They are primarily designed to carry radial loads, but when radial clearance is increased, they exhibit similar performance to angular contact ball bearings and can withstand combined radial and axial loads. They can also be used to support pure axial loads at higher speeds where thrust ball bearings are unsuitable. Compared to other bearing types of the same size, these bearings have a lower coefficient of friction and a higher maximum speed.

[0003] However, the structure of thin-walled bearings dictates their relatively weak load-bearing capacity. Their primary load-bearing structure has very thin walls, making them difficult to withstand excessive loads. This makes them particularly susceptible to deformation and damage, especially in environments subject to vibration and impact. Due to their structure, thin-walled bearings are consumable components. Deformation requires complete replacement, resulting in high operating costs. Furthermore, a rubber ring is typically placed between the inner and outer rings of thin-walled bearings, making it difficult to add lubricant during routine maintenance.

[0004] Therefore, the present invention proposes a thin-walled bearing to address the above shortcomings. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a thin-walled bearing.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a thin-walled bearing, comprising an inner ring and an outer ring, the inner ring being sleeved inside the outer ring, and the width of the outer ring being smaller than the width of the inner ring, a plurality of first ball grooves being provided at equal distances on the outer side wall of the inner ring, and a first ball being provided inside each first ball groove, a recessed groove for sliding in the first ball being provided on the inner side wall of the outer ring, one side of the recessed groove extending to the end face of the outer ring, a bottom ring plate and a top ring plate being fitted on the lower surface and the upper surface of the inner ring respectively, a connecting assembly for connecting the bottom ring plate and the top ring plate being provided on the upper surface of the bottom ring plate, a positioning assembly for supporting the first ball being fixed on the upper surface of the bottom ring plate, and an oil filling port being provided on one side of the top ring plate.

[0007] As a further description of the above technical solution:

[0008] The inner diameters of the bottom ring plate and the top ring plate are both smaller than the inner diameter of the inner ring, and the outer diameters of the bottom ring plate and the top ring plate are both smaller than the outer diameter of the outer ring.

[0009] As a further description of the above technical solution:

[0010] The connecting assembly includes a through rod fixed on both sides of the upper surface of the bottom ring plate, and the top surface of the through rod is provided with a thread. The inner ring and the top ring plate are both provided with through holes for passing the through rod. The top end of the through rod passes through the through holes of the inner ring and the top ring plate and is rotatably connected with a nut on the surface. The nut is in contact with the upper surface of the top ring plate.

[0011] As a further description of the above technical solution:

[0012] The positioning assembly includes a support ring fixed on the upper surface of the bottom ring plate, the support ring is located in the gap between the outer ring and the inner ring, and an annular arc-shaped concave surface is provided at the top of the support ring and close to the first ball. The first ball is located in the annular groove formed by the arc-shaped concave surface and the sink groove.

[0013] As a further description of the above technical solution:

[0014] A plurality of second ball grooves are provided on the upper and lower surfaces of the outer ring at equal distances, and a second ball is provided in each second ball groove. The second balls on the upper and lower surfaces of the outer ring are in contact with the top ring plate and the bottom ring plate respectively.

[0015] As a further description of the above technical solution:

[0016] The top surface of the fuel filler port is provided with a thread, and the threaded surface of the fuel filler port is rotatably connected with a sealing cover.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, an inner ring, an outer ring, a bottom ring plate, a top ring plate, a positioning assembly and a connecting assembly are provided. The inner ring is located inside the outer ring, and the bottom ring plate and the top ring plate are located at the bottom and top of the inner ring and the outer ring respectively. The connecting assembly can realize the fixed connection between the bottom ring plate and the top ring plate, so that the inner ring and the outer ring are squeezed and positioned by the bottom ring plate and the top ring plate. The positioning assembly on the surface of the bottom ring plate can squeeze and further position the first ball on the outer wall of the inner ring. When the inner ring or outer ring of the bearing is severely worn or deformed, it is convenient to replace the inner ring or outer ring separately, thereby reducing the use cost of the thin-walled bearing.

[0019] 2. In the present invention, by providing the top ring plate and the oil filling port, lubricating oil can be directly injected into the space between the inner ring and the outer ring by opening the sealing cover on the oil filling port, thereby improving the convenience of adding lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0021] Figure 2It is an overall cross-sectional view of the utility model;

[0022] Figure 3 It is a partial three-dimensional diagram of the utility model;

[0023] Figure 4 For the utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 5 For the utility model Figure 2 Enlarged view of point B in the middle.

[0025] Legend:

[0026] 1. Inner ring; 2. Outer ring; 3. First ball groove; 4. First ball; 5. Countersunk groove; 6. Bottom ring plate; 7. Top ring plate; 8. Positioning assembly; 81. Support ring; 82. Arc-shaped concave surface; 9. Connecting assembly; 91. Through rod; 92. Nut; 10. Through hole; 11. Second ball groove; 12. Second ball; 13. Refueling port; 14. Sealing cover. DETAILED DESCRIPTION

[0027] 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.

[0028] Reference Figure 1-Figure 5 The utility model provides an embodiment: a thin-walled bearing, comprising an inner ring 1 and an outer ring 2, the inner ring 1 is sleeved inside the outer ring 2, and the width of the outer ring 2 is smaller than the width of the inner ring 1, a plurality of first ball grooves 3 are opened at equal distances on the outer wall of the inner ring 1, and a first ball 4 is arranged inside each first ball groove 3, a sinking groove 5 for sliding into the first ball 4 is opened on the inner wall of the outer ring 2, one side of the sinking groove 5 extends to the end face of the outer ring 2, a bottom ring plate 6 and a top ring plate 7 are respectively fitted on the lower and upper surfaces of the inner ring 1, a connecting component 9 for connecting the bottom ring plate 6 and the top ring plate 7 is provided on the upper surface of the bottom ring plate 6, a positioning component 8 for supporting the first ball 4 is fixed on the upper surface of the bottom ring plate 6, and a refueling port 13 is provided on one side of the top ring plate 7.

[0029] The inner diameters of the bottom ring plate 6 and the top ring plate 7 are both smaller than the inner diameter of the inner ring 1 , and the outer diameters of the bottom ring plate 6 and the top ring plate 7 are both smaller than the outer diameter of the outer ring 2 .

[0030] By designing the bottom ring plate 6 and the top ring plate 7 to be smaller, the bottom ring plate 6 and the top ring plate 7 are prevented from affecting the installation of the inner ring 1 and the outer ring 2 .

[0031] The connecting assembly 9 includes a through rod 91 fixed on both sides of the upper surface of the bottom ring plate 6, and the top surface of the through rod 91 is provided with a thread. The inner ring 1 and the top ring plate 7 are both provided with a through hole 10 for passing the through rod 91. The top end of the through rod 91 passes through the through holes 10 of the inner ring 1 and the top ring plate 7 and is rotatably connected to the surface with a nut 92, which fits with the upper surface of the top ring plate 7.

[0032] When installing the bottom ring plate 6 and the top ring plate 7, after passing the two through rods 91 on the bottom ring plate 6 through the through holes 10 on the inner ring 1 and the top ring plate 7, screw the nuts 92 on the top surface of the through rods 91, so as to use the bottom ring plate 6 and the top ring plate 7 to position the inner ring 1 and the outer ring 2.

[0033] The positioning assembly 8 includes a support ring 81 fixed to the upper surface of the bottom ring plate 6. The support ring 81 is located in the gap between the outer ring 2 and the inner ring 1. An annular arc-shaped concave surface 82 is provided at the top of the support ring 81 and close to the side of the first ball 4. The first ball 4 is located in the annular groove formed by the arc-shaped concave surface 82 and the sink groove 5.

[0034] When the bottom ring plate 6 and the top ring plate 7 are located on both sides of the inner ring 1 and the outer ring 2 , the arc-shaped concave surface 82 on the top of the support ring 81 can further position the first ball 4 .

[0035] A plurality of second ball grooves 11 are provided on the upper and lower surfaces of the outer ring 2 at equal distances. A second ball 12 is provided inside each second ball groove 11. The second balls 12 on the upper and lower surfaces of the outer ring 2 are in contact with the top ring plate 7 and the bottom ring plate 6 respectively.

[0036] When the inner ring 1 rotates inside the outer ring 2, the bottom ring plate 6 and the top ring plate 7 will also rotate with the inner ring 1. At this time, the second balls 12 can reduce the friction between the bottom ring plate 6, the top ring plate 7 and the outer ring 2.

[0037] The top surfaces of the oil filling port 13 are provided with threads, and the threaded surfaces of the oil filling port 13 are rotatably connected with a sealing cap 14. By twisting off the sealing cap 14, lubricating oil can be added from the oil filling port 13 to the gap between the bottom ring plate 6 and the top ring plate 7.

[0038] Working Principle: This bearing is installed in the same manner as existing thin-walled bearings. If the inner ring 1 or outer ring 2 becomes severely worn and deformed during use, the nut 92 can be removed. Then, the through-rod 91 can be withdrawn from the through-holes 10 in the inner ring 1 and the top ring plate 7. After the bottom ring plate 6 and the top ring plate 7 are removed from both the inner ring 1 and the outer ring 2, the support ring 81 no longer compresses the first ball 4. The outer ring 2 can then be removed from the inner ring 1, allowing the first ball 4 to slide along the groove 5. This allows the outer ring 2 or the inner ring 1 to be replaced. During assembly, the inner ring 1 is slid into the outer ring 2 from the groove 5 of the outer ring 2, allowing the first ball 4 to slide into the groove 5. The bottom ring plate 6 and the top ring plate 7 are then installed on both the outer ring 2 and the inner ring 1. This thin-walled bearing is easy to disassemble and assemble, facilitating quick replacement of either the inner ring 1 or the outer ring 2, reducing operating costs.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A thin-walled bearing, characterized in that: The invention comprises an inner ring (1) and an outer ring (2), wherein the inner ring (1) is sleeved inside the outer ring (2), and the width of the outer ring (2) is smaller than that of the inner ring (1), and a plurality of first ball grooves (3) are provided at equal intervals on the outer side wall of the inner ring (1), and a first ball (4) is provided inside each first ball groove (3), and a sink groove (5) for sliding into the first ball (4) is provided on the inner side wall of the outer ring (2), and one side of the sink groove (5) extends to the end face of the outer ring (2), and a bottom ring plate (6) and a top ring plate (7) are respectively fitted on the lower surface and the upper surface of the inner ring (1), and a connecting component (9) for connecting the bottom ring plate (6) and the top ring plate (7) is provided on the upper surface of the bottom ring plate (6), and a positioning component (8) for supporting the first ball (4) is fixed on the upper surface of the bottom ring plate (6), and a refueling port (13) is provided on one side of the top ring plate (7).

2. A thin-walled bearing according to claim 1, characterized in that: The inner diameters of the bottom ring plate (6) and the top ring plate (7) are both smaller than the inner diameter of the inner ring (1), and the outer diameters of the bottom ring plate (6) and the top ring plate (7) are both smaller than the outer diameter of the outer ring (2).

3. The thin-walled bearing according to claim 1, characterized in that: The connecting assembly (9) includes a through rod (91) fixed to both sides of the upper surface of the bottom ring plate (6), and the top surface of the through rod (91) is provided with a thread, and the inner ring (1) and the top ring plate (7) are both provided with a through hole (10) for passing the through rod (91), and the top end of the through rod (91) passes through the through holes (10) of the inner ring (1) and the top ring plate (7) and is rotatably connected to a nut (92) on the surface, and the nut (92) is in contact with the upper surface of the top ring plate (7).

4. The thin-walled bearing according to claim 1, characterized in that: The positioning assembly (8) includes a support ring (81) fixed to the upper surface of the bottom ring plate (6), the support ring (81) is located in the gap between the outer ring (2) and the inner ring (1), and an annular arc-shaped concave surface (82) is provided at the top of the support ring (81) and close to the side of the first ball (4), and the first ball (4) is located in the annular groove formed by the arc-shaped concave surface (82) and the sink groove (5).

5. The thin-walled bearing according to claim 1, characterized in that: A plurality of second ball grooves (11) are provided at equal distances on the upper and lower surfaces of the outer ring (2), and a second ball (12) is provided inside each second ball groove (11). The second balls (12) on the upper and lower surfaces of the outer ring (2) are in contact with the top ring plate (7) and the bottom ring plate (6) respectively.

6. The thin-walled bearing according to claim 1, characterized in that: The top surface of the oil filling port (13) is provided with a thread, and the threaded surface of the oil filling port (13) is rotatably connected to a sealing cover (14).

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