CN211288445U

CN211288445U - Embedded sliding bearing

Info

Publication number: CN211288445U
Application number: CN201922309500.4U
Authority: CN
Inventors: 周德贤
Original assignee: Rongcheng Jinruntong Bearing Co ltd
Current assignee: Rongcheng Jinruntong Bearing Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-18
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses an inserted slide bearing, it includes inside sleeve, and inside sleeve includes the skin of being made by the steel sheet bending, the intermediate level that forms by the sintering of copper powder and the inlayer of being made by polyformaldehyde, and its structural feature is that this slide bearing still includes outside sleeve, and inside sleeve is fixed in outside sleeve. The inner peripheral surface of the outer sleeve is annularly provided with a plurality of axially extending linear oil grooves, a plurality of groups of oil through holes are axially arranged on the inner sleeve at intervals, each group of oil through holes comprises a plurality of oil through holes which are annularly arranged on the inner sleeve and are communicated with the linear oil grooves, and the outer sleeve is provided with an oil inlet hole communicated with the linear oil grooves. The utility model has the advantages that: the embedded sliding bearing can be made into a larger size, the strength of the embedded sliding bearing can be improved under the condition that the thickness of an outer layer is not increased, and the application range of the bearing is expanded. The embedded sliding bearing has good lubricating property and long service life.

Description

Embedded sliding bearing

Technical Field

The utility model relates to an inserted slide bearing.

Background

At present, the polyformaldehyde composite bearing is widely popularized due to good performance and long service life. As shown in fig. 1, the conventional polyoxymethylene composite bearing includes an outer layer 2 made of a bent steel plate, an intermediate layer 3 made of sintered copper powder, and an inner layer 4 made of polyoxymethylene. When the copper powder is manufactured, copper powder is sintered on a steel plate, then polyformaldehyde is coated and rolled on a copper powder layer, the three layers are combined together and then rolled into a cylinder, and the butt joints are welded together.

The existing polyformaldehyde composite bearing has the following defects: because the outer layer 2 of the polyformaldehyde composite bearing is made of a steel plate and is limited by a plate rolling process, the outer layer 2 cannot be too thick, and therefore if the manufacturing size of the polyformaldehyde composite bearing is larger, the strength of the polyformaldehyde composite bearing is lower.

Disclosure of Invention

The utility model aims at providing an inserted slide bearing can improve its bulk strength under the condition that does not increase outer thickness.

In order to achieve the above object, the utility model discloses an inner sleeve, inner sleeve includes the skin of being made by the steel sheet bending, the intermediate level that forms by the copper powder sintering and the inlayer of being made by polyformaldehyde, and its structural feature is that this slide bearing still includes outside sleeve, and inside sleeve is fixed in outside sleeve. After the structure is adopted, the inner sleeve is equivalent to the existing polyformaldehyde composite bearing, and the inner sleeve is formed by rolling and processing and forms a part with the main function of the embedded sliding bearing; the outer sleeve may be cast or machined to enhance the overall strength of the plain bearing. The improved embedded sliding bearing can be made into a larger size, the strength of the embedded sliding bearing can be improved under the condition of not increasing the thickness of an outer layer, and the application range of the bearing is expanded.

The two ends of the external sleeve are provided with external threads and are provided with end covers in a screwed mode, each end cover comprises a cylinder body and a cover plate, a communicating hole is formed in each cover plate, and the diameter of each communicating hole is between the inner diameter and the outer diameter of the outer layer. The both ends lid is used for inside telescopic axial spacing, prevents that inside sleeve from deviating from the sleeve in the middle part.

The inner peripheral surface of the outer sleeve is annularly provided with a plurality of axially extending linear oil grooves, a plurality of groups of oil through holes are axially arranged on the inner sleeve at intervals, each group of oil through holes comprises a plurality of oil through holes annularly arranged on the inner sleeve and communicated with the linear oil grooves, and the outer sleeve is provided with an oil inlet hole communicated with the linear oil grooves. Lubricating oil gets into sharp oil groove through the inlet port, and the rethread oil through gets into inside sleeve, lubricates the internal surface of inside sleeve.

The middle section of the outer peripheral surface of the outer sleeve is provided with an annular oil inlet groove, and the oil inlet hole is formed in the annular oil inlet groove. The embedded sliding bearing is usually installed in a mounting hole of a bearing seat for use, the inner surface of the mounting hole is in contact with the outer surface of an external sleeve, an oil filling device for supplying lubricating oil to an annular oil inlet groove is arranged on the bearing seat, the lubricating oil firstly enters the annular oil inlet groove and then is dispersed to each linear oil groove, and uniform oil supply and uniform lubrication are realized.

And two annular sealing grooves are respectively arranged on two end faces of the external sleeve, two ends of the linear oil groove respectively penetrate through the two annular sealing grooves, and a sealing ring is arranged in each annular sealing groove. The sealing ring is used for sealing two ends of the linear oil groove, so that the lubricating oil is kept in the linear oil groove.

The inner surface of the inner layer is provided with a plurality of oil storage pits. The oil storage pit has the function of temporarily storing lubricating oil, and improves the lubricating effect on the inner surface of the inner sleeve.

The outer diameter of the part with the thread on the outer sleeve is smaller than that of the main body part of the outer sleeve, and the outer diameter of the cylinder body is smaller than or equal to that of the main body part of the outer sleeve. After adopting above-mentioned structure, end cover and outside sleeve become an organic whole, can increase the area of contact of mounting hole on inserted slide bearing and the bearing frame, and inserted slide bearing is more firm on the bearing frame.

And a position, far away from the external sleeve, on the peripheral surface of the cylinder body is provided with a limiting blocking edge. After the embedded sliding bearing is installed on the bearing seat, the limiting blocking edge is used for limiting the axial direction of the embedded sliding bearing, and the embedded sliding bearing is prevented from being separated from the installation hole of the bearing seat.

The periphery of the limiting blocking edge is annularly provided with a plurality of notches. The periphery of the limiting blocking edge is provided with the notch, so that the end cover can be conveniently screwed, and the assembly of the embedded sliding bearing is convenient.

To sum up, the utility model has the advantages that: the embedded sliding bearing can be made into a larger size, the strength of the embedded sliding bearing can be improved under the condition that the thickness of an outer layer is not increased, and the application range of the bearing is expanded. The embedded sliding bearing has good lubricating property and long service life.

Drawings

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic structural view of a conventional shaft sleeve;

fig. 2 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 taken along line A-A;

FIG. 4 is a schematic view of the structure of FIG. 2 taken along line B-B;

fig. 5 is a schematic structural diagram of another embodiment of the present invention;

fig. 6 is a left side view of fig. 5.

Detailed Description

Referring to fig. 2 to 4, in a first embodiment of the invention, a plain bearing of the mosaic type comprises an inner sleeve 1, said inner sleeve 1 comprising an outer layer 2 made of bent sheet steel, an intermediate layer 3 sintered from copper powder and an inner layer 4 made of polyoxymethylene, characterized in that the plain bearing further comprises an outer sleeve 5, the inner sleeve 1 being fixed inside the outer sleeve 5. After the structure is adopted, the inner sleeve 1 is equivalent to the existing polyformaldehyde composite bearing, and the inner sleeve 1 is formed by rolling and processing and forms a part with the main function of the embedded sliding bearing; the outer sleeve 5 may be formed by casting or machining, and the outer sleeve 5 serves to reinforce the overall strength of the plain bearing. The improved mosaic sliding bearing can be made into a larger size, and the strength of the mosaic sliding bearing can be improved under the condition of not increasing the thickness of the outer layer 2. The application range of the bearing is expanded.

In order to fix the inner sleeve 1, in the present example, both ends of the outer sleeve 5 are provided with external threads and are screwed with end caps 6, each end cap 6 comprises a cylinder 7 and a cover plate 8, the cover plate 8 is provided with a communication hole 9, and the diameter of the communication hole 9 is between the inner diameter and the outer diameter of the outer layer 2. The two end covers 6 are used for axial limiting of the inner sleeve 1, and the inner sleeve 1 is prevented from being separated from the middle sleeve 5. The inner peripheral surface of the outer sleeve 5 is annularly provided with a plurality of axially extending linear oil grooves 11, a plurality of groups of oil through holes 12 are axially arranged on the inner sleeve 1 at intervals, each group of oil through holes 12 comprises a plurality of oil through holes 12 which are annularly arranged on the inner sleeve 1 and are communicated with the linear oil grooves 11, and the outer sleeve 5 is provided with an oil inlet hole 13 communicated with the linear oil grooves 11. Lubricating oil enters the linear oil groove 11 through the oil inlet hole 13 and then enters the inner sleeve 1 through the oil through hole 12 to lubricate the inner surface of the inner sleeve 1. Of course, the inner sleeve 1 may be fixed in other ways, for example, the inner sleeve 1 and the outer sleeve 5 are combined together in an interference fit.

With continued reference to fig. 2 to 4, an annular oil inlet groove 14 is formed at a middle section of the outer circumferential surface of the outer sleeve 5, and the oil inlet hole 13 is formed in the annular oil inlet groove 14. The embedded sliding bearing is usually installed in a mounting hole of a bearing seat for use, the inner surface of the mounting hole is in contact with the outer surface of an external sleeve 5, an oil filling device for supplying lubricating oil to an annular oil inlet groove 14 is arranged on the bearing seat, the lubricating oil firstly enters the annular oil inlet groove 14 and then is dispersed to each linear oil groove 11, and uniform oil supply and uniform lubrication are realized. Two end faces of the outer sleeve 5 are respectively provided with an annular sealing groove 15, two ends of the linear oil groove 11 respectively penetrate through the two annular sealing grooves 15, and a sealing ring 16 is arranged in each annular sealing groove 15. The packing 16 is used for sealing both ends of the linear oil groove 11 to keep the lubricating oil in the linear oil groove 11.

In order to achieve a better lubrication of the inner surface of the inner sleeve 1, it is also possible to provide a number of oil sumps in the inner surface of the inner layer 4. The oil sump has a function of temporarily storing lubricating oil, and improves the lubricating effect on the inner surface of the inner sleeve 1.

In the first embodiment of the present invention, the outer diameter of the portion having the thread on the outer sleeve 5 is smaller than the outer diameter of the main portion thereof, and the outer diameter of the barrel 7 is smaller than or equal to the outer diameter of the main portion of the outer sleeve 5. After adopting above-mentioned structure, end cover 6 becomes an organic whole with outside sleeve 5, can increase the area of contact of mounting hole on inserted slide bearing and the bearing frame, and inserted slide bearing is more firm on the bearing frame. Referring to fig. 5 and 6, the second embodiment of the present invention is further improved on the basis of the first embodiment, and a position on the outer peripheral surface of the improved cylinder 7, which is far away from the outer sleeve 5, is provided with a limit stop edge 18. After the embedded sliding bearing is installed on the bearing seat, the limit stop edge 18 is used for axial limit of the embedded sliding bearing, and the embedded sliding bearing is prevented from being separated from the installation hole of the bearing seat. The edge 18 is provided with a plurality of notches 19 around its periphery. The limiting blocking edge 18 is provided with a notch 19 at the periphery thereof, so that the end cover 6 can be conveniently screwed, and the assembly of the embedded sliding bearing is convenient.

To sum up, the present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications are intended to be within the scope of the present invention.

Claims

1. The utility model provides an inserted slide bearing, includes inner sleeve (1), inner sleeve (1) includes outer (2) of being made by the steel sheet bending, intermediate level (3) and the inlayer (4) of being made by polyformaldehyde that are formed by the sintering of copper powder, and characterized by this slide bearing still includes outside sleeve (5), and inner sleeve (1) is fixed in outside sleeve (5).

2. A mosaic sliding bearing according to claim 1, characterized in that both ends of the outer sleeve (5) are provided with external threads and are threadedly provided with end caps (6), the end caps (6) comprising a cylinder body (7) and a cover plate (8), the cover plate (8) being provided with communication holes (9), the diameter of the communication holes (9) being between the inner and outer diameters of the outer layer (2).

3. The embedded sliding bearing according to claim 1, wherein a plurality of axially extending linear oil grooves (11) are annularly distributed on the inner circumferential surface of the outer sleeve (5), a plurality of groups of oil through holes (12) are axially arranged on the inner sleeve (1) at intervals, each group of oil through holes (12) comprises a plurality of oil through holes (12) annularly distributed on the inner sleeve (1) and communicated with the linear oil grooves (11), and an oil inlet hole (13) communicated with the linear oil grooves (11) is arranged on the outer sleeve (5).

4. A plain bearing according to claim 3, in which the outer peripheral surface of the outer sleeve (5) has an annular oil inlet groove (14) in the middle section thereof, and the oil inlet hole (13) is provided in the annular oil inlet groove (14).

5. A mosaic sliding bearing according to claim 3, characterized in that said outer sleeve (5) has an annular seal groove (15) on each end surface, the linear oil groove (11) has two ends respectively penetrating through the two annular seal grooves (15), and a seal ring (16) is mounted in the annular seal groove (15).

6. A plain inlay bearing according to claim 1, characterized in that the inner surface of the inner layer (4) is provided with oil pockets.

7. A mosaic slide bearing according to any one of claims 1 to 6, wherein the external diameter of the portion of the outer sleeve (5) having the thread is less than the external diameter of the main body portion thereof, and the external diameter of the cylinder (7) is less than or equal to the external diameter of the main body portion of the outer sleeve (5).

8. A plain bearing according to claim 7, in which the outer circumferential surface of the cylinder (7) remote from the outer sleeve (5) is provided with a stop edge (18).

9. Plain bearing according to claim 8, in which the limit stop (18) is provided with a plurality of notches (19) around its periphery.