Adjustable sealed joint ball bearing

Abstract

The utility model discloses an adjustable sealed joint ball bearing. The adjustable sealed joint ball bearing comprises an outer ring assembly arranged outside an inner ring, the outer ring assembly is formed by splicing an outer upper ring and an outer lower ring; the end face of the outer upper ring is concaved inwards to form a notch, a telescopic sealing ring is arranged in the notch, an adjusting ring is arranged in the notch, and the telescopic sealing ring is pressed in the notch through the adjusting ring, so that at least part of the telescopic sealing ring is attached to the outer wall of the outer ring. A mounting groove is formed in the contact surface of the outer lower ring and the inner ring, a combined sealing ring is arranged in the mounting groove, and at least part of the combined sealing ring is attached to the outer wall of the inner ring; the joint ball bearing solves the problems that the sealing performance between an inner ring and an outer ring of a joint ball bearing in the prior art is insufficient, and the requirement for high sealing performance cannot be met while mutual swinging between parts is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a joint ball bearing, and in particular to an adjustable sealing type joint ball bearing. BACKGROUND

[0002] The joint ball bearing is an important transmission component necessary for a machine in which two objects need to make relative yawing movement and simultaneously bear axial force and radial force. With the rapid development of the shield industry, the joint ball bearing has been widely applied in the shield, engineering machinery, light industry machinery, metallurgical machinery, medical machinery and industrial machinery industries, and the sealing performance requirement is higher and higher. For example, the Chinese patent with the patent number CN202221545418.7 provides a variable-angle joint ball bearing. The technical scheme comprises an outer shell and a ball, the ball is rotationally connected in the outer shell, a cavity is formed in the inner part of the outer shell, the inner wall surface of the cavity is a spherical surface, a pair of through holes are formed on the outer shell and symmetrically arranged about the spherical center of the outer shell; a rotating ring is arranged for driving the ball to rotate; the rotating ring is rotationally connected in the outer shell, the outer wall surface and the inner wall surface of the rotating ring are spherical surfaces, and the ball is located in the rotating ring; a pair of rotating shafts are fixedly connected to the outer side of the rotating ring and symmetrically arranged about the center of the rotating ring, and the rotating shafts are inserted into the through holes. The sealing performance between the inner and outer rings of the joint ball bearing in the prior art is insufficient, and it cannot guarantee the high sealing performance requirement while realizing the mutual swinging between the components. SUMMARY

[0003] The utility model aims at providing an adjustable sealing type joint ball bearing, which solves the problem of insufficient sealing performance between the inner and outer rings of the joint ball bearing in the prior art and cannot guarantee the high sealing performance requirement while realizing the mutual swinging between the components.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an adjustable sealing type joint ball bearing, which comprises an outer ring assembly arranged outside the inner ring.

[0005] The outer ring assembly is composed of an outer upper ring and an outer lower ring.

[0006] The end face of the outer upper ring is recessed inward to form a notch, a telescopic sealing ring is arranged in the notch, an adjusting ring is arranged in the notch, the telescopic sealing ring is pressed in the notch through the adjusting ring, and the telescopic sealing ring is at least partially attached to the outer wall of the outer ring.

[0007] An installation groove is formed on the contact surface of the outer lower ring and the inner ring, a combined sealing ring is arranged in the installation groove, and the combined sealing ring is at least partially attached to the outer wall of the inner ring.

[0008] Preferably, the adjusting ring is locked on the outer upper ring by adjusting bolts.

[0009] Preferably, the outer upper ring and the outer lower ring are fixed by a plurality of bolts.

[0010] Preferably, the abutting regions of the outer upper ring and the outer lower ring form a stepped fitting structure.

[0011] Preferably, a second O-ring is arranged at the abutting position of the outer upper ring and the outer lower ring.

[0012] Preferably, a first O-ring is arranged at the contact position of the outer upper ring and the inner ring;

[0013] A third O-ring is arranged at the contact position of the outer lower ring and the inner ring.

[0014] Preferably, oil holes are arranged on the outer upper ring and the outer lower ring, and the oil holes are arranged along the radial direction of the inner ring.

[0015] Beneficial effects: The adjustable sealing type joint ball bearing provided by the utility model comprises an outer ring assembly arranged outside an inner ring; the outer ring assembly is composed of an outer upper ring and an outer lower ring; the end face of the outer upper ring is recessed inward to form a notch, a telescopic sealing ring is arranged in the notch, an adjusting ring is arranged in the notch, the telescopic sealing ring is pressed in the notch through the adjusting ring, so that the telescopic sealing ring is at least partially attached to the outer wall of the outer ring; a mounting groove is formed on the contact surface of the outer lower ring and the inner ring, and a combined sealing ring is arranged in the mounting groove and at least partially attached to the outer wall of the inner ring; the adjustable sealing type joint ball bearing provided by the utility model adopts a split type splicing structure, which facilitates the mounting and dismounting of the outer ring assembly outside the inner ring, meanwhile, the outer lower ring is provided with a combined sealing ring, so that the sealing performance between the outer lower ring and the inner ring is ensured; the telescopic sealing ring is arranged on the outer upper ring and locked by the adjusting ring, the compression amount of the telescopic sealing ring can be changed through adjusting bolts, so that the contact area between the telescopic sealing ring and the inner ring arc surface is adjusted, the sealing performance between the inner ring arc surface and the telescopic sealing ring is realized, and in summary, the adjustable sealing type joint ball bearing provided by the utility model can realize the bearing of radial and axial loads of the inner and outer rings, realize the mutual swing between components, and ensure the high sealing performance requirement.

[0016] Other features and advantages of the utility model will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification, and together with the following specific embodiments, serve to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0018] Figure 1 is a sectional view of the adjustable sealing type joint ball bearing provided by the present application;

[0019] Figure 2 is Figure 1 is an enlarged view of A part in

[0020] Explanation of reference signs

[0021] 1 - inner ring; 2 - adjusting ring; 3 - adjusting bolt; 4 - telescopic sealing ring; 5 - outer upper ring; 6 - outer lower ring; 7 - first O-ring; 8 - second O-ring; 9 - third O-ring; 10 - combined sealing ring. Specific embodiments

[0022] The specific embodiments of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0023] As Figure 1 and 2The utility model provides a kind of adjustable sealing type joint ball bearing, the adjustable sealing type joint ball bearing includes the outer ring ring assembly being arranged in the outside of inner ring 1;The outer ring ring assembly is formed by splicing of outer upper ring 5 and outer lower ring 6;The end face of outer upper ring 5 is recessed inward and is formed with notch, retractable sealing ring 4 is arranged in the notch, adjusting ring 2 is arranged in the notch, retractable sealing ring 4 is compressed in the notch by adjusting ring 2, so that retractable sealing ring 4 is at least partially attached with the outer wall of outer ring 1;Mounting groove is formed on the contact surface of outer lower ring 6 with inner ring 1, combined sealing ring 10 is arranged in the mounting groove, combined sealing ring 10 is at least partially attached with the outer wall of inner ring 1.The adjustable sealing type joint ball bearing provided by the utility model, outer ring ring assembly adopts split splicing structure, facilitating the installation and disassembly of outer ring ring assembly outside inner ring, meanwhile, outer lower ring is provided with combined sealing ring, which guarantees the sealing performance between it and inner ring, the combined sealing ring here can be external stepped ring and internal O-ring, O-ring is force element, provides sufficient sealing force, and plays compensating role to stepped ring;Outer upper ring is provided with retractable sealing ring, and is locked by adjusting ring, the compression amount of retractable sealing ring can be changed by adjusting bolt, so as to adjust the contact area of retractable sealing ring with inner ring arc surface, realize the sealing performance between inner ring arc surface and retractable sealing ring, and the adjustable sealing type joint ball bearing provided by the utility model can realize the mutual swing between components while realizing that inner ring and outer ring bear radial load and axial load, and guarantees the sealing performance requirement of high.

[0024] In a preferred embodiment of the utility model, the adjusting ring 2 is locked on the outer upper ring 5 by the adjusting bolt 3. The compression amount of retractable sealing ring can be changed by adjusting bolt, so as to adjust the contact area of retractable sealing ring with inner ring arc surface, realize the sealing performance between inner ring arc surface and retractable sealing ring.

[0025] In a preferred embodiment of the utility model, in order to lock the outer upper ring and the outer lower ring, the outer upper ring 5 and the outer lower ring 6 are fixed by a plurality of bolts.

[0026] In a preferred embodiment of the utility model, in order to accurately butt the outer upper ring and the outer lower ring, so that the outer upper ring and the outer lower ring are effectively spliced, the butt joint area of the outer upper ring 5 and the outer lower ring 6 forms a stepped matching structure.

[0027] In a preferred embodiment of the utility model, in order to increase the sealing performance of the butt joint surface of the outer upper ring and the outer lower ring, the butt joint surface of the outer upper ring 5 and the outer lower ring 6 is provided with a second O-ring 8.

[0028] In a preferred embodiment of the utility model, in order to increase the sealing performance between the outer upper ring, the outer lower ring and the inner ring respectively, the contact part of the outer upper ring 5 with the inner ring 1 is provided with a first O-shaped ring 7; the contact part of the outer lower ring 6 with the inner ring 1 is provided with a third O-shaped ring 9.

[0029] In a preferred embodiment of the utility model, in order to facilitate the lubricating grease filling towards the outer arc surface of the inner ring, the outer upper ring 5 and the outer lower ring 6 are both provided with oil holes, and the oil holes are arranged along the radial direction of the inner ring 1.

[0030] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the specific details in the above-mentioned embodiments, and various simple modifications can be made to the technical scheme of the utility model within the technical concept of the utility model, and these simple modifications all belong to the protection scope of the utility model.

[0031] In addition, it should be noted that various specific technical features described in the above-mentioned specific embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the utility model will not further describe various possible combination manners.

[0032] In addition, various different embodiments of the utility model can also be combined in any manner, as long as it does not deviate from the concept of the utility model, and it should also be considered as the disclosed content of the utility model.

Claims

1. An adjustable sealed ball joint bearing, characterized by, The adjustable sealing type joint ball bearing comprises an outer ring assembly arranged outside an inner ring (1); The outer ring assembly is composed of an upper outer ring (5) and a lower outer ring (6); An end surface of the upper outer ring (5) is recessed inward to form a notch, an elastic sealing ring (4) is arranged in the notch, an adjusting ring (2) is arranged in the notch, the elastic sealing ring (4) is compressed in the notch by the adjusting ring (2), and the elastic sealing ring (4) is at least partially attached to an outer wall of the inner ring (1); An installation groove is formed on a contact surface of the lower outer ring (6) with the inner ring (1), a combined sealing ring (10) is arranged in the installation groove, and the combined sealing ring (10) is at least partially attached to the outer wall of the inner ring (1).

2. The adjustable sealed ball joint bearing of claim 1, wherein, The adjusting ring (2) is locked on the upper outer ring (5) by an adjusting bolt (3).

3. The adjustable sealed ball joint bearing of claim 2, wherein, The upper outer ring (5) and the lower outer ring (6) are fixed by a plurality of bolts.

4. The adjustable sealed ball joint bearing of claim 3, wherein, The abutting regions of the upper outer ring (5) and the lower outer ring (6) form a stepped matching structure.

5. The adjustable sealed ball joint bearing of claim 4, wherein, A second O-shaped ring (8) is arranged at the abutting regions of the upper outer ring (5) and the lower outer ring (6).

6. The adjustable sealed ball joint bearing of claim 5, wherein, A first O-shaped ring (7) is arranged at the contact region of the upper outer ring (5) with the inner ring (1). A third O-shaped ring (9) is arranged at the contact region of the lower outer ring (6) with the inner ring (1).

7. The adjustable sealed ball joint bearing of claim 6, wherein, Oil holes are arranged on the upper outer ring (5) and the lower outer ring (6), and the oil holes are arranged along the radial direction of the inner ring (1).

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