Floating bearing easy to store oil

Abstract

The utility model discloses a floating bearing easy to store oil, which comprises a bearing body, the outer side of the bearing body is provided with an outer floating surface and an inner floating surface, an annular groove is arranged in the outer floating surface, and a plurality of through holes communicated with the inner floating surface are arranged in the annular groove; the bearing body is internally provided with a dovetail groove, the edge of the through hole is provided with a circular bead, and the distance between the upper side face and the lower side face of the circular groove is gradually reduced in the direction away from the axis of the bearing body, so that the section of the circular groove is in a dovetail shape, and a large amount of lubricating oil can be stored in the bearing body in the modes that the dovetail groove is formed in the bearing body and the circular bead is machined at the edge of the through hole; lubricating oil in the bearing system can form an oil film in the starting, stopping and rotating processes of the bearing system, abrasion and friction are reduced, and the service life is prolonged; the bearing body is further provided with a plurality of weight reduction grooves, a certain amount of lubricating oil can be stored in the weight reduction grooves, the weight of a bearing system can be reduced, and the lightweight design is achieved under the condition that the structural strength is not affected as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of floating bearings, in particular to a floating bearing which is easy to store oil. Background Art

[0002] A turbocharger is a device that uses the residual energy in the exhaust gas discharged by the engine to do work to increase the effective power of the engine, and the floating bearing is one of the components in the turbocharger.

[0003] The lubricating oil in the floating bearing of the turbocharger comes from the engine. When the engine stops running, the lubricating oil will immediately stop being supplied to the turbocharger. At this time, the turbocharger will continue to work for a period of time. During this process, the bearing system in the turbocharger will work in the absence of lubricating oil, causing dry friction and reducing the service life.

[0004] In order to solve the above problems, a micro-dynamic pressure type turbocharger floating bearing is disclosed in the patent application No. 202223586910.1. In the patent, an annular oil groove is opened in the side wall of the bearing body, and the annular oil groove is used to store oil. Figure 1 It can be clearly observed that the annular oil groove is a straight groove, and the oil storage capacity of the straight groove is limited, so it needs to be improved;

[0005] In addition, this patent provides an oil cavity in the bearing body to store lubricating oil, which reduces the structural strength of the bearing body. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a floating bearing that is easy to store oil, so as to solve the problems mentioned in the above background technology.

[0007] The utility model provides the following technical solution: a floating bearing that is easy to store oil, comprising a bearing body, the outer side of the bearing body having an outer floating surface and an inner floating surface, an annular groove is provided in the outer floating surface, and a plurality of through holes connected to the inner floating surface are provided in the annular groove;

[0008] The distance between the upper and lower side surfaces of the annular groove gradually decreases in a direction away from the axis of the bearing body, so that the cross section of the annular groove forms a dovetail shape.

[0009] Preferably, there are no less than four through holes, and they are arranged at equal angles with the axis of the bearing body as the center.

[0010] Preferably, the curved surface of the annular groove is rounded at the edge of the through hole.

[0011] Preferably, the edges at the upper and lower ends of the inner floating surface in the bearing body are chamfered.

[0012] Preferably, the chamfer is an asymmetric chamfer, and the longitudinal distance of the chamfer is greater than the lateral distance.

[0013] Preferably, a plurality of weight-reducing grooves are provided in the curved surface of the annular groove and the curved surface of the inner floating surface.

[0014] Preferably, the circumferential distance of the weight-reducing groove is smaller than its longitudinal distance.

[0015] Preferably, the weight-reducing grooves are provided in two groups, one upper group and the other lower group, and are respectively located on the upper and lower sides of the through hole.

[0016] Preferably, the weight-reducing groove is circumferentially offset from the through hole.

[0017] The utility model provides a floating bearing that is easy to store oil and has the following beneficial effects:

[0018] The utility model can store a large amount of lubricating oil in the bearing body by arranging a dovetail groove in the bearing body and processing a fillet at the edge of the through hole, so that the lubricating oil in the bearing system can form an oil film during the start-stop and rotation process, thereby reducing wear and friction and increasing the service life;

[0019] The bearing body of the utility model is also processed with a plurality of weight-reducing grooves, which can not only store a certain amount of lubricating oil but also reduce the weight of the bearing system, thereby achieving a lightweight design without affecting the structural strength as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0021] Figure 2 It is the front view of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the utility model.

[0023] In the figure:

[0024] 11. Bearing body; 12. Ring groove; 13. Through hole; 14. Chamfer; 15. Weight reduction groove. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Reference Figure 1-Figure 3 According to an embodiment of the utility model, a floating bearing that is easy to store oil includes a bearing body 11, and the bearing body 11 is installed in a bearing seat. After the floating bearing that is easy to store oil is installed, lubricating oil needs to be added. The lubricating oil can be filled between the bearing body 11 and the bearing seat, and between the bearing body 11 and the rotor to reduce friction and wear.

[0030] The outer side of the bearing body 11 has an outer floating surface opposite to the bearing seat, and the inner side of the bearing body 11 has an inner floating surface. In order to facilitate the oil storage of the bearing body 11, an annular groove 12 is provided in the outer floating surface, and in order to enable the lubricating oil to flow between the inner floating surface and the outer floating surface, a plurality of through holes 13 connected to the inner floating surface are provided in the annular groove 12.

[0031] In addition, unlike the design of straight grooves in ordinary floating bearings, the distance between the upper and lower sides of the annular groove 12 gradually decreases in the direction away from the axis of the bearing body 11, so that the cross-section of the annular groove 12 forms a dovetail shape. This structure is more conducive to oil storage and can reduce the weight of the floating bearing that is easy to store oil, thereby achieving a lightweight design.

[0032] In this embodiment, the number of the through holes 13 is no less than four, specifically six, and the through holes 13 are arranged at equal angles with the axis of the bearing body 11 as the center.

[0033] In addition, the curved surface of the annular groove 12 is rounded at the edge of the through hole 13. The rounded corners are processed to increase the surface area, which is beneficial for absorbing lubricating oil to form an oil film, and can lubricate the middle part of the bearing body 11 when the bearing is operating.

[0034] In addition, chamfers 14 are processed at the edges of the upper and lower ends of the inner floating surface of the bearing body 11. The chamfers 14 can also store oil and are easy to process. The lubricating oil in the chamfers 14 can lubricate the ends of the bearing body 11 when the bearing is started, stopped and operated. Moreover, the chamfers 14 are asymmetric chamfers, and the longitudinal distance of the chamfers 14 is greater than the lateral distance.

[0035] In the third embodiment of the floating bearing that is easy to store oil, in order to allow the bearing body 11 to store more lubricating oil and to further reduce the weight of the bearing body 11, a plurality of weight-reducing grooves 15 are provided in the curved surface of the annular groove 12 and the curved surface of the inner floating surface. The weight-reducing grooves 15 are provided in two groups, upper and lower, and are respectively located on the upper and lower sides of the through hole 13.

[0036] In addition, in order to reduce the influence of the weight-reducing groove 15 on the structural strength of the bearing body 11 , the circumferential distance of the weight-reducing groove 15 is smaller than its longitudinal distance, and the weight-reducing groove 15 is circumferentially offset from the through hole 13 .

[0037] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A floating bearing that is easy to store oil, comprising a bearing body (11), characterized in that: The outer side of the bearing body (11) has an outer floating surface and an inner floating surface, the outer floating surface is provided with an annular groove (12), and the annular groove (12) is provided with a plurality of through holes (13) connected to the inner floating surface; The distance between the upper and lower side surfaces of the annular groove (12) gradually decreases in a direction away from the axis of the bearing body (11), so that the cross section of the annular groove (12) forms a dovetail shape.

2. A floating bearing that is easy to store oil according to claim 1, characterized in that: The through holes (13) are provided in no less than four locations and are arranged at equal angles with the axis of the bearing body (11) as the center.

3. The floating bearing that is easy to store oil according to claim 1, characterized in that: The curved surface of the annular groove (12) is processed with a rounded corner at the edge of the through hole (13).

4. The floating bearing that is easy to store oil according to claim 1, characterized in that: Chamfers (14) are processed at the edges of the upper and lower ends of the inner floating surface in the bearing body (11).

5. The floating bearing that is easy to store oil according to claim 4, characterized in that: The chamfer (14) is an asymmetric chamfer, and the longitudinal distance of the chamfer (14) is greater than the transverse distance.

6. The floating bearing that is easy to store oil according to claim 1, characterized in that: A plurality of weight-reducing grooves (15) are provided in the curved surface of the annular groove (12) and the curved surface of the inner floating surface.

7. A floating bearing that is easy to store oil according to claim 6, characterized in that: The circumferential distance of the weight-reducing groove (15) is smaller than the longitudinal distance thereof.

8. The floating bearing that is easy to store oil according to claim 6, characterized in that: The weight-reducing grooves (15) are provided in two groups, upper and lower, and are respectively located on the upper and lower sides of the through hole (13).

9. The floating bearing that is easy to store oil according to claim 6, characterized in that: The weight-reducing groove (15) is circumferentially offset from the through hole (13).

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