CN216478440U

CN216478440U - Sealing structure of spiral spring bearing

Info

Publication number: CN216478440U
Application number: CN202122526994.9U
Authority: CN
Inventors: 蒋成和
Original assignee: Yingkou Guohong Bearing Co ltd
Current assignee: Yingkou Guohong Bearing Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-05-10
Anticipated expiration: 2031-10-20

Abstract

The utility model relates to the technical field of bearings, in particular to a sealing structure of a spiral spring bearing, which comprises an inner ring and an outer ring which are of a spiral spring body structure, wherein a rolling body is arranged between the inner ring and the outer ring, retainers are arranged at two ends of the rolling body, end covers connected with the retainers are arranged at two ends of the inner ring and the outer ring, a sleeve shell is sleeved outside the outer ring, two ends of the sleeve shell are attached to the end covers, a gap is formed between the sleeve shell and the outer ring, a shaft neck is arranged on the inner side of the inner ring in a penetrating manner, and a left sealing plate and a right sealing plate which are circular are arranged on the shaft neck. According to the utility model, a closed space for sealing the inner ring, the outer ring and the rolling body is formed among the housing, the end cover, the left sealing plate and the right sealing plate, so that the phenomenon that lubricating grease in the bearing overflows outwards from two ends or a spiral gap of the outer ring in the rotating process is reduced or avoided, the continuous lubrication of the bearing is ensured, the lubricating grease adding frequency of the bearing is reduced, and the use is more convenient.

Description

Sealing structure of spiral spring bearing

Technical Field

The utility model relates to the technical field of bearings, in particular to a spiral spring bearing sealing structure.

Background

The rolling bearing is divided into two categories, namely a ball bearing and a roller bearing, by the form of a rolling body, wherein the roller bearing can be divided into a short cylindrical roller bearing, a tapered roller bearing, a self-aligning roller bearing, a needle roller bearing and the like, most of the existing bearings are rigid bearings, only the spiral roller bearing belongs to an elastic bearing, the bearing under the high-temperature severe working environment usually needs to bear high temperature and large radial force, and the spiral roller bearing has the characteristics of impact resistance and high temperature resistance.

The inner ring and the outer ring of the existing spiral spring bearing are both of a spiral spring body structure, and although dirt and foreign substances can be pressed into a spiral gap of the spiral ring through rolling, the moving surface of the bearing is kept clean when the bearing rotates, the spiral spring bearing with the spiral gap is poor in sealing performance, lubricating grease between the inner ring and the outer ring can be extruded while the inner ring and the outer ring roll, and therefore the lubricating grease needs to be frequently added between the inner ring and the outer ring, and great troubles are caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a sealing structure of a spiral spring bearing, which can reduce or prevent the phenomenon that the lubricating grease in the bearing overflows outwards from two ends or a spiral gap of an outer ring in the rotating process of the bearing, and solves the problem of poor sealing performance of the conventional spiral spring bearing.

In order to achieve the purpose of reducing or avoiding the phenomenon that the lubricating grease in the bearing overflows outwards from two ends or from the spiral clearance of the outer ring in the rotating process, the utility model provides the following technical scheme: the utility model provides a coil spring bearing seal structure, includes inner circle and the outer lane that is the helical spring body structure, the inner circle with be equipped with the rolling element between the outer lane, the holder is installed at the rolling element both ends, the inner circle the both ends of outer lane all be equipped with the end cover that the holder is connected, the outside cover in outer lane is equipped with the cover shell, the cover shell both ends with laminate between the end cover, the cover shell with the clearance has between the outer lane, the axle journal is worn to be equipped with to the inner circle inboard, be equipped with on the axle journal and be circular shape left closing plate, right closing plate, two seted up respectively on the end cover and held left closing plate with the movable groove of right closing plate, the diameter of movable groove is greater than left closing plate the diameter of right closing plate, all install on the end cover will movable groove opening one side sealed apron.

Optionally, the inboard integrated into one piece of cover shell is equipped with and is spiral helicine arch, protruding with the cooperation of pegging graft of spiral gap on the outer lane, just protruding transversal personally submits triangle-shaped.

Optionally, a groove adapted to the end of the casing is formed in the edge of the opposite side of the two end covers, and the two ends of the casing are embedded into the groove.

Optionally, the right sealing plate is welded and fixed on the outer wall of the journal, and the left sealing plate is detachably mounted at the end of the journal through a first fixing bolt.

Optionally, the cover plate and the one side of activity groove laminating are equipped with sealed the pad, the cover plate passes through the second fixing bolt to be installed in the activity groove.

Optionally, the rolling element is of a helical spring body structure, the rolling element is installed between the two retainers through a connecting shaft, the rolling element is provided with two circles, one circle is close to the inner side of the retainer and is attached to the outer wall of the inner ring, and the other circle is close to the outer side of the retainer and is attached to the inner side of the outer ring.

Compared with the prior art, the utility model provides a spiral spring bearing sealing structure which has the following beneficial effects:

1. according to the utility model, the sleeve, the left sealing plate and the right sealing plate are arranged, and after the bearing is installed, a closed space for sealing the inner ring, the outer ring and the rolling body is formed among the sleeve, the end cover, the left sealing plate and the right sealing plate, so that the phenomenon that lubricating grease in the bearing overflows outwards from two ends or a spiral gap of the outer ring in the rotating process is reduced or avoided, the continuous lubrication of the bearing is ensured, the lubricating grease adding frequency of the bearing is reduced, and the use is more convenient;

2. according to the utility model, the bulges play a role in supporting the housing, so that the strength of the housing is increased, and when the bearing is subjected to larger radial impact during working, the bulges can be embedded into the spiral gaps of the outer ring, so that the housing can adapt to the diameter change of the outer ring and cannot be extruded and damaged by the outer ring;

3. according to the utility model, the right sealing plate is fixed on the outer wall of the journal, the left sealing plate is detachably arranged at the end part of the journal, and the bearing can be drawn out from the inner ring by detaching the left sealing plate, so that the journal is convenient to replace.

Drawings

FIG. 1 is a schematic view of an assembly structure of the present invention;

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

FIG. 3 is a schematic illustration of an explosive structure according to the present invention;

FIG. 4 is a schematic cross-sectional front view of the present invention;

FIG. 5 is an enlarged schematic view of FIG. 4 at A according to the present invention;

FIG. 6 is an enlarged view of the structure at B of FIG. 4 according to the present invention;

FIG. 7 is a schematic view of a rolling element and cage coupling structure of the present invention.

In the figure: 1. a journal; 2. an inner ring; 3. an outer ring; 4. a rolling body; 5. a holder; 6. an end cap; 7. a left seal plate; 8. a right sealing plate; 9. a first fixing bolt; 10. a movable groove; 11. a cover plate; 12. a second fixing bolt; 13. a gasket; 14. a housing; 15. a protrusion; 16. and (7) connecting the shafts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 to 7, an embodiment of the present invention provides a technical solution: a sealing structure of a spiral spring bearing comprises an inner ring 2 and an outer ring 3 which are of a spiral spring body structure, a rolling body 4 is arranged between the inner ring 2 and the outer ring 3, retainers 5 are arranged at two ends of the rolling body 4, end covers 6 connected with the retainers 5 are arranged at two ends of the inner ring 2 and the outer ring 3 respectively, a sleeve shell 14 is sleeved outside the outer ring 3, the two ends of the sleeve shell 14 are attached to the end covers 6, a gap is reserved between the sleeve shell 14 and the outer ring 3, a shaft neck 1 penetrates through the inner side of the inner ring 2, a circular left sealing plate 7 and a circular right sealing plate 8 are arranged on the shaft neck 1, movable grooves 10 containing the left sealing plate 7 and the right sealing plate 8 are respectively formed in the two end covers 6, the diameter of each movable groove 10 is larger than that of the left sealing plate 7 and the right sealing plate 8, cover plates 11 for sealing one side of the opening of each movable groove 10 are all arranged on the end covers 6, and when the bearing is installed and used, one side of each sleeve shell 14, the end cover 6, the left sealing plate 7 and the right sealing plate 8, and the inner ring 2, The sealed airtight space of outer lane 3 and rolling element 4 to reduce or avoid the bearing at the rotation in-process, its inside lubricating grease is outwards spilled over by both ends or by the spiral clearance of outer lane 3, has ensured the continuous lubrication of bearing, reduces the lubricating grease frequency of adding of bearing, and it is more convenient to use.

On the basis of the above embodiments, the spiral protrusion 15 is integrally formed on the inner side of the casing 14 of the embodiment, the protrusion 15 is in insertion fit with the spiral gap on the outer ring 3, the cross section of the protrusion 15 is triangular, the protrusion 15 plays a role in supporting the casing 14, the strength of the casing 14 is increased, when the bearing is subjected to large radial impact during working, the outer ring 3 can reduce impact force by enlarging the diameter of the outer ring 3, and at the moment, the protrusion 15 on the inner side of the casing 14 can be embedded into the spiral gap of the outer ring 3, so that the casing 14 can adapt to the diameter change of the outer ring 3 without being damaged by the outer ring 3 due to extrusion.

On the basis of the above embodiment, the edge of the opposite side of the two end covers 6 of the embodiment is provided with the groove matched with the end part of the casing 14, the two ends of the casing 14 are embedded into the groove, the groove not only limits the two ends of the casing 14, so that the casing 14 is more stable, but also can increase the contact surface between the end cover 6 and the casing 14, and the sealing performance is better.

On the basis of above-mentioned embodiment, the right sealing plate 8 welded fastening of this embodiment is at axle journal 1 outer wall, and left sealing plate 7 passes through first fixing bolt 9 detachable and installs the tip at axle journal 1, so sets up, can make things convenient for the change of axle journal 1, and when axle journal 1 changed, only need unscrew first fixing bolt 9, take off left sealing plate 7, can take out axle journal 1 from inner circle 2.

On the basis of the above embodiment, the sealing gasket 13 is arranged on the surface, attached to the movable groove 10, of the cover plate 11, the cover plate 11 is installed in the movable groove 10 through the second fixing bolt 12, and the sealing performance between the cover plate 11 and the movable groove 10 is improved by the arrangement of the sealing gasket 13, so that the sealing performance of the bearing is further improved.

On the basis of the above embodiments, the rolling element 4 of the present embodiment is a helical spring body structure, the rolling element 4 is installed between two retainers 5 through a connecting shaft 16, and the rolling element 4 has two circles, wherein one circle is close to the inner side of the retainer 5 and attached to the outer wall of the inner ring 2, and the other circle is close to the outer side of the retainer 5 and attached to the inner side of the outer ring 3, during the rotation of the bearing, the two circles of rolling elements 4 on the retainer 5 are respectively in rolling contact with the inner ring 2 and the outer ring 3, when the rolling element 4 of the helical spring body structure rotates, the diameter of the rolling element can be adjusted according to the magnitude of the radial force applied to the journal 1, and the rolling element can be restored to the original shape immediately when the radial force disappears, and compared with a traditional columnar structure, the service life is longer.

The working principle is as follows: when the bearing is installed, the rolling body 4 is installed on the retainer 5 and is installed between the inner ring 2 and the outer ring 3 together with the retainer 5, then, the sleeve 14 is sleeved outside the outer ring 3 and the two end covers 6 are installed at two ends of the inner ring 2 and the outer ring 3, at the moment, the sleeve 14 is fixed between the two end covers 6, then, the shaft neck 1 is inserted into the inner ring 2, the right sealing plate 8 on the shaft neck 1 is placed in the movable groove 10 of one end cover 6, then, the left sealing plate 7 is connected to the end of the shaft neck 1 through the first fixing bolt 9 and is placed in the movable groove 10 of the other end cover 6, finally, the left sealing plate 7 and the right sealing plate 8 are respectively packaged in the movable groove 10 through the two cover plates 11, so far, the bearing is installed, and after the bearing is installed, one part is formed between the sleeve 14, the end covers 6, the left sealing plate 7 and the right sealing plate 8, and the inner ring 2, The sealed airtight space of outer lane 3 and rolling element 4 to reduce or avoid the bearing at the rotation in-process, its inside lubricating grease is outwards spilled over by both ends or by the spiral clearance of outer lane 3, has ensured the continuous lubrication of bearing, reduces the lubricating grease frequency of adding of bearing, and it is more convenient to use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A kind of helical spring bearing seal structure, characterized by: the bearing comprises an inner ring (2) and an outer ring (3) which are of a spiral spring body structure, wherein a rolling body (4) is arranged between the inner ring (2) and the outer ring (3), retainers (5) are installed at two ends of the rolling body (4), end covers (6) connected with the retainers (5) are arranged at two ends of the inner ring (2) and the outer ring (3), a sleeve shell (14) is sleeved outside the outer ring (3), two ends of the sleeve shell (14) are attached to the end covers (6), a gap is reserved between the sleeve shell (14) and the outer ring (3), a shaft neck (1) is arranged on the inner side of the inner ring (2) in a penetrating manner, a left sealing plate (7) and a right sealing plate (8) which are circular are arranged on the shaft neck (1), two movable grooves (10) for accommodating the left sealing plate (7) and the right sealing plate (8) are respectively arranged on the end covers (6), the diameter of the movable groove (10) is larger than that of the left sealing plate (7) and that of the right sealing plate (8), and cover plates (11) for sealing one side of an opening of the movable groove (10) are mounted on the end covers (6).

2. A coil spring bearing seal structure according to claim 1, wherein: the inner side of the casing (14) is integrally provided with a protrusion (15) in a spiral shape, the protrusion (15) is matched with a spiral gap on the outer ring (3) in an inserting mode, and the cross section of the protrusion (15) is triangular.

3. A coil spring bearing seal structure according to claim 1, wherein: the edge of one side opposite to the two end covers (6) is provided with a groove matched with the end part of the casing (14), and the two ends of the casing (14) are embedded into the groove.

4. A coil spring bearing seal structure according to claim 1, wherein: the right sealing plate (8) is welded and fixed on the outer wall of the shaft neck (1), and the left sealing plate (7) is detachably mounted at the end part of the shaft neck (1) through a first fixing bolt (9).

5. A coil spring bearing seal structure according to claim 1, wherein: apron (11) with the one side of activity groove (10) laminating is equipped with sealed pad (13), apron (11) are installed through second fixing bolt (12) in activity groove (10).

6. A coil spring bearing seal structure according to claim 1, wherein: the rolling element (4) is of a spiral spring body structure, the rolling element (4) is installed between the two retainers (5) through a connecting shaft (16), the rolling element (4) is provided with two rings, one ring is close to the inner side of the retainer (5) and is attached to the outer wall of the inner ring (2), and the other ring is close to the outer side of the retainer (5) and is attached to the inner side of the outer ring (3).