Shaft-end integrated bearing

Abstract

The utility model provides a shaft end integrated bearing, and relates to the technical field of bearings. The device comprises an integrated outer ring which is fixedly connected to the outer side wall of an oil shell, and a rotating shaft penetrates through the oil shell and is arranged in the integrated outer ring in a sealed mode; the O-shaped ring is installed between the first end face of the integrated outer ring and the oil shell. The sealing ring is installed in the integrated outer ring and abuts against the inner side wall of the integrated outer ring. And the sealing lip is arranged on the inner side of the sealing ring and is in running fit with the outer side wall of the inner ring. The structure of the integrated outer ring is adopted, the structure is simplified, after the shaft end of the rotating shaft is installed in the integrated outer ring, the bearing and the shaft end of the rotating shaft are sealed in the integrated outer ring, equivalently, the outer ring and the bearing seat are integrally forged and formed to form the integrated outer ring, the product strength is improved, the static sealing performance is better, maintenance-free design is achieved, lubrication does not need to be added again in the later period, and the service life is prolonged. The maintenance cost is greatly reduced; the sealing ring with the sealing lip is adopted, the structure is simple, and dust entering and oil leakage can be effectively prevented. The sealing effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an integrated shaft-end bearing. Background Art

[0002] After the shaft end of the existing rotating shaft is installed with a bearing, an end cover needs to be installed on the bearing seat, that is, an end cover is installed on one side of the bearing to enclose the bearing and the shaft end of the rotating shaft in the bearing seat. The structure is complex and not easy to maintain, and the sealing effect is limited; while a sealing ring is directly installed on the other end face of the bearing, and the installation and sealing structure of the sealing ring is complex.

[0003] Therefore, there is an urgent need for an integrated shaft-end bearing with a simple structure that can effectively prevent dust ingress and oil leakage. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integrated shaft-end bearing, which solves the technical problems of complex structure and poor sealing effect in the prior art. The preferred technical solutions provided by the utility model can produce many technical effects, which will be elaborated below.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An integrated shaft-end bearing provided by the utility model includes:

[0007] An integrated outer ring, which is fixedly connected to the outer side wall of the oil shell, and the rotating shaft passes through the oil shell and is enclosed in the integrated outer ring;

[0008] An O-ring, which is installed between the first end face of the integrated outer ring and the oil shell;

[0009] A sealing ring, which is installed in the integrated outer ring and is in contact with the inner side wall of the integrated outer ring;

[0010] A sealing lip, which is arranged inside the sealing ring and is in rotational cooperation with the outer side wall of the inner ring.

[0011] Preferably, it further includes:

[0012] Contact points, and steel balls are in rolling cooperation with the inner side wall of the integrated outer ring and the inner side wall of the inner ring respectively through a plurality of the contact points.

[0013] Preferably, it further includes:

[0014] A retaining ring, which is coaxially installed in the integrated outer ring, and the sealing ring is axially limited in the integrated outer ring through the retaining ring.

[0015] Preferably, it further includes:

[0016] A circlip, the circlip is clamped in the integral outer ring and is in contact with the side of the retaining ring away from the sealing ring.

[0017] Preferably, at least two sets of sealing lips are provided, and a plurality of the sealing lips are axially arranged on the inner side of the sealing ring respectively.

[0018] Preferably, at least four sets of the contact points on each set of the steel balls are provided, and all the contact points are symmetrically arranged on both sides of the steel balls.

[0019] Preferably, it further includes:

[0020] An end cover, one end face of the integral outer ring away from the rotating shaft is provided as the end cover, the end cover is integrally formed on the integral outer ring, and the end cover is correspondingly arranged with the shaft end of the rotating shaft.

[0021] Preferably, a gap is provided between the end cover and the inner ring.

[0022] In the technical solution provided by the present utility model, a structure of an integral outer ring is adopted. After the shaft end of the rotating shaft is installed in the integral outer ring, the bearing and the shaft end of the rotating shaft are enclosed in the integral outer ring, which is equivalent to integrally forging and forming the outer ring and the bearing seat to form an integral outer ring, improving the product strength, having better static sealing performance, a maintenance-free design, no need to add lubrication again later, and greatly reducing the maintenance cost; a sealing ring with sealing lips is also adopted, with a simple structure and can effectively prevent dust from entering and oil leakage. Overall, this application improves and simplifies the outer ring structure and the sealing ring, avoids dust from entering the bearing and oil leakage, and effectively improves the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic top view of the integral outer ring of the present utility model;

[0025] Figure 2 It is a schematic radial cross-section of the integral outer ring and the sealing ring of the present utility model.

[0026] In the figure: 1. Integral outer ring; 2. Inner ring; 3. Steel ball; 4. O-ring; 5. Cage; 6. Circlip; 7. Retaining ring; 8. Sealing ring; 9. Sealing lip; 10. Contact point; 11. Oil shell; 12. End cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0028] Referring to Figure 1-2 , a specific embodiment of the present utility model provides a shaft-end integrated bearing, including:

[0029] An integrated outer ring 1, which is fixedly connected to the outer side wall of the oil shell 11, and the rotating shaft passes through the oil shell 11 and is enclosed in the integrated outer ring 1;

[0030] An O-ring 4, which is installed between the first end face of the integrated outer ring 1 and the oil shell 11;

[0031] A sealing ring 8, which is installed in the integrated outer ring 1 and is in contact with the inner side wall of the integrated outer ring 1;

[0032] A sealing lip 9, which is arranged inside the sealing ring 8 and is in rotational cooperation with the outer side wall of the inner ring 2.

[0033] After the shaft end of the existing rotating shaft is installed with the bearing, it is necessary to install an end cover on the bearing seat, that is, install an end cover on one side of the bearing to enclose the bearing and the shaft end of the rotating shaft in the bearing seat to prevent dust from entering the bearing; and a sealing ring is directly installed on the other end face of the bearing, with a complex structure. In this application, the structure of the integrated outer ring 1 is adopted. After the shaft end of the rotating shaft is installed into the integrated outer ring 1, the bearing and the shaft end of the rotating shaft are enclosed in the integrated outer ring 1, which is equivalent to integrally forging and forming the outer ring and the bearing seat to form the integrated outer ring 1, improving the product strength, having better static sealing performance, maintenance-free design, and no need to add lubrication again later, greatly reducing the maintenance cost; a sealing ring 8 with a sealing lip 9 is also adopted, with a simple structure, which can effectively prevent dust from entering and oil leakage. Overall, this application improves and simplifies the outer ring structure 1 and the sealing ring 8 to prevent dust from entering the bearing and oil leakage, effectively improving the working efficiency.

[0034] Among them, the integrated outer ring 1 is fixedly connected to the outer side wall of the oil shell 11. During the operation of the rotating shaft, the oil shell 11 and the integrated outer ring 1 remain stationary.

[0035] For a further optimized solution, it further includes:

[0036] Contact points 10. The steel balls 3 are in rolling contact with the inner side wall of the integral outer ring 1 and the inner side wall of the inner ring 2 respectively through a number of contact points 10. There are at least four groups of contact points 10 on each group of steel balls 3, and all the contact points 10 are symmetrically arranged on both sides of the steel balls 3.

[0037] As Figure 2 shown, there are at least two contact points 10 between each group of steel balls 3 and the integral outer ring 1, and there are at least two contact points 10 between each group of steel balls 3 and the inner ring 2, ensuring that the bearing can bear axial and radial loads simultaneously; the above-mentioned contact points 10 are all surface contacts.

[0038] Further optimized solution also includes:

[0039] A retaining ring 7, which is coaxially installed in the integral outer ring 1. The sealing ring 8 is axially limited in the integral outer ring 1 through the retaining ring 7;

[0040] A snap ring 6, which is snap-fitted in the integral outer ring 1 and contacts the side of the retaining ring 7 away from the sealing ring 8.

[0041] The main function of the retaining ring 7 is to axially limit the sealing ring 8; by installing the snap ring 6, the retaining ring 7 is further limited, effectively restricting the axial displacement of the sealing ring 8 and ensuring the sealing effect between the integral outer ring 1 and the inner ring 2.

[0042] Further optimized solution, there are at least two sets of sealing lips 9, and a number of sealing lips 9 are axially arranged inside the sealing ring 8 respectively.

[0043] By setting a number of sets of sealing lips 9, a multi-layer sealing effect is achieved.

[0044] Further optimized solution also includes:

[0045] An end cover 12, one end face of the integral outer ring 1 away from the rotating shaft is set as the end cover 12, and the end cover 12 is integrally formed on the integral outer ring 1, and the end cover 12 is correspondingly arranged with the shaft end of the rotating shaft.

[0046] The end cover 12 is integrally formed on the integral outer ring 1. In this way, the effect of integrally forging the outer ring and the bearing seat is achieved.

[0047] Further optimized solution, there is a gap between the end cover 12 and the inner ring 2.

[0048] In this way, the smooth operation between the end cover 12 and the inner ring 2 is ensured.

[0049] It should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. in this article is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to this application. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In the description of this article, it should also be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An integrated bearing at the shaft end, characterized in that, Comprising: An integral outer ring (1), the integral outer ring (1) being fixedly connected to the outer side wall of the oil sump (11), the rotating shaft passing through the oil sump (11) and being hermetically arranged within the integral outer ring (1); An O-ring (4), the O-ring (4) being installed between the first end face of the integral outer ring (1) and the oil sump (11); A sealing ring (8), the sealing ring (8) being installed within the integral outer ring (1) and being in contact with the inner side wall of the integral outer ring (1); A sealing lip (9), the sealing lip (9) being arranged inside the sealing ring (8) and being in rotational fit with the outer side wall of the inner ring (2).

2. The shaft-end integrated bearing according to claim 1, characterized in that, Further comprising: Contact points (10), the steel balls (3) being in rolling fit with the inner side wall of the integral outer ring (1) and the inner side wall of the inner ring (2) respectively through a plurality of the contact points (10).

3. The shaft-end integrated bearing according to claim 1, wherein, Further comprising: A retaining ring (7), the retaining ring (7) being coaxially installed within the integral outer ring (1), and the sealing ring (8) being axially defined within the integral outer ring (1) by the retaining ring (7).

4. The shaft-end integrated bearing according to claim 3, characterized in that, Further comprising: A snap ring (6), the snap ring (6) being snap-connected within the integral outer ring (1) and being in contact with the side of the retaining ring (7) away from the sealing ring (8).

5. The shaft-end integrated bearing according to claim 1, characterized in that, At least two groups of the sealing lips (9) are provided, and a plurality of the sealing lips (9) are respectively arranged axially inside the sealing ring (8).

6. The shaft-end integral bearing according to claim 2, characterized in that At least four groups of the contact points (10) on each group of the steel balls (3) are provided, and all the contact points (10) are symmetrically arranged on both sides of the steel balls (3).

7. The shaft-end integrated bearing according to claim 1, characterized in that, Further comprising: An end cap (12), one end face of the integral outer ring (1) away from the rotating shaft is provided as the end cap (12), the end cap (12) being integrally formed on the integral outer ring (1), and the end cap (12) being correspondingly arranged with the shaft end of the rotating shaft.

8. The shaft-end integrated bearing according to claim 7, characterized in that, A gap is provided between the end cap (12) and the inner ring (2).

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