CN216077992U

CN216077992U - Linear bearing capable of avoiding jamming caused by unilateral stress

Info

Publication number: CN216077992U
Application number: CN202122584811.9U
Authority: CN
Inventors: 刘瑞杰; 任连磊; 任学良
Original assignee: Shandong Liaocheng Maitewei Machinery Co ltd
Current assignee: Shandong Liaocheng Maitewei Machinery Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-03-18
Anticipated expiration: 2031-10-27

Abstract

The utility model belongs to the technical field of linear bearings, and discloses a linear bearing capable of avoiding jamming caused by unilateral stress, which comprises a shell, a retainer and first balls, wherein the retainer is positioned at the inner side of the shell, the first balls are arranged in the retainer and are in tangent conflict with the shell, two ends of the shell are fixedly connected with reinforcing components, each reinforcing component comprises an outer ring, an inner ring, an annular frame, second balls and annular check rings, the outer ring is fixedly connected with two ends of the shell, the annular frames and the second balls are arranged between the outer ring and the inner ring, each second ball is arranged in the annular frame, the annular check rings are fixedly connected with two sides of the outer ring, and the annular check rings at two ends of the shell are respectively and fixedly connected with the shell and the retainer. The utility model discloses a, strengthen the intensity at both ends through outer lane, inner circle and annular retaining ring, can avoid the unilateral atress too big phenomenon that causes the card to pause, be favorable to improving life.

Description

Linear bearing capable of avoiding jamming caused by unilateral stress

Technical Field

The utility model relates to the technical field of linear bearings, in particular to a linear bearing capable of avoiding jamming caused by unilateral stress.

Background

A metal linear bearing is a linear motion system produced at low cost for use with a cylindrical shaft with infinite stroke. The sliding component is widely applied to sliding components of industrial machines such as precision machine tools, textile machinery, food packaging machinery, printing machinery and the like.

At present, when the bearing shaft of the existing linear bearing rotates, the contact surface of the bearing shaft and the linear bearing is a spherical surface, when the linear bearing is stressed on one side, the phenomenon that the ball stressed on one side is blocked easily occurs, if the ball is continuously used after the blocking occurs, the service life is seriously influenced, and the work is influenced.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems in the prior art, the utility model aims to provide a linear bearing capable of avoiding jamming caused by unilateral stress, which has the advantages of strengthening the strength of two ends of the linear bearing, avoiding the jamming phenomenon caused by unilateral stress, being beneficial to prolonging the service life, and solving the problem that the service life is seriously influenced because the jamming phenomenon is easy to occur when the unilateral stress of the linear bearing is too large.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A linear bearing capable of avoiding jamming caused by unilateral stress comprises a shell, a retainer and a first ball, wherein the retainer is positioned on the inner side of the shell, the first ball is arranged in the retainer and is in tangential contact with the shell, and reinforcing components are fixedly connected to two ends of the shell;

the reinforcing assembly comprises an outer ring, an inner ring, an annular frame, second balls and annular check rings, the outer ring is fixedly connected to the two ends of the shell, the annular frame and the second balls are arranged between the outer ring and the inner ring, each second ball is arranged in the annular frame, the annular check rings are fixedly connected to the two sides of the outer ring, and the annular check rings at the two ends of the shell are fixedly connected with the shell and the retainer respectively.

Preferably, the inner diameter of the annular retainer ring is larger than that of the inner ring, and the inner diameter of the annular retainer ring is smaller than the outer diameter of the inner ring.

Preferably, a gap is formed between the annular retainer ring and the end face of the inner ring.

Preferably, a sealing ring is arranged between the outer ring and the inner ring, and the sealing ring is located on one side far away from the shell and rotates together with the inner ring.

Preferably, an injection hole is formed in the outer side of the shell, and a sealing threaded plug is connected to the inner thread of the injection hole in a threaded manner.

Preferably, the annular retainer ring fixedly connected with the shell is provided with a through hole, and a gap between the outer ring and the inner ring is communicated with a gap between the shell and the retainer through the through hole.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) after the rotating shaft sequentially penetrates through the inner ring, the retainer and the inner ring during working, and the structure of the reinforcing assembly is adopted, when axial stress is increased or unilateral stress is applied, the outer ring and the inner ring at two ends can reduce or offset the axial stress, meanwhile, the annular retainer ring at the end surface can reduce or offset the axial stress of the outer ring and the inner ring, the strength at two ends is enhanced through the outer ring, the inner ring and the annular retainer ring, the phenomenon of blocking caused by overlarge unilateral stress can be avoided, and the service life is prolonged.

(2) Lubricating oil can be injected between the shell and the retainer through the injection hole by unscrewing the sealing threaded plug, so that the smooth rotation is improved, a gap between the outer ring and the inner ring is communicated with a gap between the shell and the retainer through the through hole, and the lubricating oil can flow into the gap between the outer ring and the inner ring through the through hole to lubricate after being injected between the shell and the retainer.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional structural view of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2 according to the present invention;

fig. 4 is an enlarged view of the utility model at B in fig. 2.

The reference numbers in the figures illustrate:

1. a housing; 2. a holder; 3. a first ball bearing; 4. an outer ring; 5. an inner ring; 6. an annular frame; 7. a second ball bearing; 8. an annular retainer ring; 9. a seal ring; 10. an injection hole; 11. sealing the threaded plug; 12. and a through hole.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a linear bearing capable of preventing jamming caused by unilateral stress includes a housing 1, a retainer 2 and a first ball 3, wherein the retainer 2 is located at the inner side of the housing 1, the first ball 3 is installed inside the retainer 2 and is in tangential contact with the housing 1, and reinforcing members are fixedly connected to both ends of the housing 1;

strengthen the subassembly including outer lane 4, inner circle 5, annular frame 6, second ball 7 and

annular retaining ring

8, 4 fixed connection in the both ends of casing 1 in the outer lane, annular frame 6 sets up between outer lane 4 and inner circle 5 with second ball 7, every the inside of annular frame 6 is packed into to second ball 7, annular retaining ring 8 fixed connection is in the both sides of outer lane 4, the annular retaining ring 8 at 1 both ends of casing respectively with casing 1 and holder 2 fixed connection.

Further, the inner diameter of the annular retainer ring 8 is larger than the inner diameter of the inner ring 5, the inner diameter of the annular retainer ring 8 is smaller than the outer diameter of the inner ring 5, the inner diameter of the annular retainer ring 8 is arranged between the inner diameter and the outer diameter of the inner ring 5, and the inner ring 5 can be limited by the annular retainer ring 8.

Furthermore, a gap is formed between the annular check ring 8 and the end surface of the inner ring 5, and the annular check ring 8 does not influence the movement of the inner ring 5 when the inner ring 5 and the outer ring 4 move mechanically through the gap formed between the annular check ring 8 and the end surface of the inner ring 5.

Further, be provided with sealing washer 9 between outer lane 4 and the inner circle 5, sealing washer 9 is located the one side of keeping away from casing 1 and rotates together with inner circle 5, and sealing washer 9 rotates together with inner circle 5 and mainly plays isolated and sealing action, prevents that impurity from getting into, also prevents the leakage of inside lubricating oil simultaneously.

Furthermore, an injection hole 10 is formed in the outer side of the shell 1, a sealing threaded plug 11 is connected to the inner thread of the injection hole 10, and lubricating oil can be injected between the shell 1 and the retainer 2 through the injection hole 10 by unscrewing the sealing threaded plug 11, so that the smooth rotation is improved.

Furthermore, the annular retainer ring 8 fixedly connected with the shell 1 is provided with a through hole 12, a gap between the outer ring 4 and the inner ring 5 is communicated with a gap between the shell 1 and the retainer 2 through the through hole 12, and after lubricating oil is injected between the shell 1 and the retainer 2 through the through hole 12, the lubricating oil can flow into the gap between the outer ring 4 and the inner ring 5 through the through hole 12 for lubrication.

The working principle is as follows: when the bearing is used and assembled, the retainer 2 is inserted into the shell 1, the reinforcing components are fixed at two ends of the shell 1, the rotating shaft sequentially penetrates through the inner ring 5, the retainer 2 and the inner ring 5 when in work, after the structure of the reinforcing components is adopted, when the axial stress is increased or the single-side stress is applied, the axial stress can be reduced or counteracted by the outer ring 4 and the inner ring 5 at two ends, meanwhile, the axial stress of the outer ring 4 and the inner ring 5 can be reduced or counteracted by the annular retainer ring 8 at the end surface, the strength of two ends is enhanced through the outer ring 4, the inner ring 5 and the annular retainer ring 8, the phenomenon of blocking caused by overlarge single-side stress can be avoided, the service life is favorably prolonged, and the bearing is prevented from being blocked and damaged during work to influence work.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a can avoid unilateral atress to cause linear bearing of card dun which characterized in that: the novel bearing comprises a shell (1), a retainer (2) and first balls (3), wherein the retainer (2) is positioned on the inner side of the shell (1), the first balls (3) are arranged in the retainer (2) and are in tangential collision with the shell (1), and reinforcing components are fixedly connected to two ends of the shell (1);

strengthen the subassembly including outer lane (4), inner circle (5), annular frame (6), second ball (7) and annular retaining ring (8), outer lane (4) fixed connection is at the both ends of casing (1), annular frame (6) and second ball (7) set up between outer lane (4) and inner circle (5), every annular frame (6) are packed into to second ball (7) inside, annular retaining ring (8) fixed connection is in the both sides of outer lane (4), annular retaining ring (8) at casing (1) both ends respectively with casing (1) and holder (2) fixed connection.

2. The linear bearing capable of avoiding seizure due to unilateral stress as claimed in claim 1, wherein: the inner diameter of the annular retainer ring (8) is larger than that of the inner ring (5), and the inner diameter of the annular retainer ring (8) is smaller than the outer diameter of the inner ring (5).

3. The linear bearing capable of avoiding seizure due to unilateral stress as claimed in claim 1, wherein: and a gap is formed between the annular retainer ring (8) and the end surface of the inner ring (5).

4. The linear bearing capable of avoiding seizure due to unilateral stress as claimed in claim 1, wherein: a sealing ring (9) is arranged between the outer ring (4) and the inner ring (5), and the sealing ring (9) is located on one side far away from the shell (1) and rotates together with the inner ring (5).

5. The linear bearing capable of avoiding seizure due to unilateral stress as claimed in claim 1, wherein: an injection hole (10) is formed in the outer side of the shell (1), and a sealing threaded plug (11) is connected to the inner thread of the injection hole (10) in a threaded mode.

6. The linear bearing capable of avoiding seizure due to unilateral stress as claimed in claim 1, wherein: and the annular retainer ring (8) is fixedly connected with the shell (1) and is provided with a through hole (12), and a gap between the outer ring (4) and the inner ring (5) is communicated with a gap between the shell (1) and the retainer (2) through the through hole (12).