CN212079954U

CN212079954U - Sealing structure for slewing bearing

Info

Publication number: CN212079954U
Application number: CN202020773429.5U
Authority: CN
Inventors: 佟永忠; 董佳明; 吕书峰
Original assignee: LUOYANG LONGDA BEARING CO Ltd
Current assignee: LUOYANG LONGDA BEARING CO Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-12-04
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a seal structure for slewing bearing, including outer lane and steel ball, the inboard of outer lane is provided with the inner circle, and the inboard of outer lane and the outside of inner circle have all seted up and have born the weight of the raceway, the steel ball is installed in the inside that bears the weight of the raceway, the upper and lower both sides of outer lane and inner circle all are provided with the skeleton seal, and the right side of skeleton seal installs self-tightening coil spring. This a seal structure for slewing bearing is equipped with the skeleton seal at outer lane and inner circle axial fitting surface, the contact of bearing inside and external environment has been blocked, the skeleton seal is because from the relation of tight coil spring, make sealed can keep shape and tension, the skeleton seal is more difficult to drop, and then slewing bearing inner structure has been protected, it is sealed still to be equipped with two straight in bearing the weight of the raceway both sides, the effect of dual protection inner structure has been played, prevent the slewing bearing oil leak, make slewing bearing's sealed effect further promote, thereby protect inner structure, slewing bearing's life has been improved.

Description

Sealing structure for slewing bearing

Technical Field

The utility model relates to a slewing bearing technical field specifically is a seal structure for slewing bearing.

Background

In the forestry machinery industry, most equipment needs to operate for a long time in harsh environment, most of these environments are moist, shady and cold, and the equipment often has debris such as mud, gravel and sand, branch, leaf to adhere to inside the equipment, and this is huge examination to the stability of the sealed of slewing bearing part wherein, if the sealed part of slewing bearing part of equipment goes wrong, can cause to get into debris in the slewing bearing raceway, and slewing bearing is rotatory unsmooth, the problem such as card is died, and then causes the damage of equipment and life-span to descend.

However, the existing slewing bearing still has defects in the using process, is not suitable for severe environments, has low sealing performance, is easy to cause sundries to enter the slewing bearing in severe environments, reduces the using effect and the service life of the slewing bearing, can not conveniently lubricate the slewing bearing, and can cause the phenomenon that the slewing bearing rotates unsmoothly after being used for a long time.

Therefore, we propose a sealing structure for a slewing bearing so as to solve the above-mentioned proposed problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal structure for slewing bearing to it is lower to solve the slewing bearing leakproofness that has now on the existing market that above-mentioned background art provided, is not suitable for comparatively abominable environment, and can not conveniently carry out lubricated problem to slewing bearing.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a seal structure for slewing bearing, includes outer lane and steel ball, the inboard of outer lane is provided with the inner circle, and the inboard of outer lane and the outside of inner circle all seted up and bear the raceway, the steel ball is installed in the inside of bearing the raceway, the upper and lower both sides of outer lane and inner circle all are provided with the skeleton seal, and the right side that the skeleton seals installs from tight coil spring, the upper and lower both sides of bearing the raceway all are provided with sealed raceway, and the internally mounted of sealed raceway has directly to seal.

Preferably, a second oil inlet is formed in the inner part of the upper end of the inner ring, a sealing plug is tightly attached to the inner part above the second oil inlet, the lower end of the second oil inlet is communicated with the bearing raceway, and the main section of the second oil inlet is of an inclined structure.

Preferably, the upper left side of the bearing raceway is communicated with the lower end of the first oil inlet, the first oil inlet is arranged in the upper end of the outer ring, a sealing plug is tightly attached to the inside above the first oil inlet, and the main section of the first oil inlet is of an inclined structure.

Preferably, the straight seal is located between the skeleton seal and the seal raceway, and the straight seal is symmetrically arranged about a transverse centerline of the bearing raceway.

Preferably, the main section of the framework seal is of a U-shaped structure, and the framework seal is tightly attached to the outer ring and the inner ring.

Compared with the prior art, the beneficial effects of the utility model are that: the sealing structure for the slewing bearing is provided with a sealing ring,

(1) the framework seals are arranged on the axial matching surfaces of the outer ring and the inner ring, so that the contact between the inside of the bearing and the external environment is blocked, the framework seals can keep the shape and the tension due to the self-tightening spiral spring, and the framework seals are not easy to fall off, so that the internal structure of the slewing bearing is protected;

(2) two straight seals are arranged on two sides of the bearing raceway, so that the effect of double protection of the internal structure is achieved, the oil leakage of the slewing bearing is prevented, the sealing effect of the slewing bearing is further improved, the internal structure is protected, and the service life of the slewing bearing is prolonged;

(3) the first oil inlet and the second oil inlet are distributed in an inclined shape, lubricating oil is conveyed into the bearing rolling path from the first oil inlet and the second oil inlet, the rolling surfaces of the bearing rolling path and the steel ball are lubricated, and smooth operation of the slewing bearing is facilitated.

Drawings

FIG. 1 is a schematic view of the main sectional structure of the present invention;

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

fig. 3 is an enlarged schematic view of a portion a of fig. 1 according to the present invention;

fig. 4 is an enlarged schematic structural diagram of the point B in fig. 1 according to the present invention.

In the figure: 1. an outer ring; 2. an inner ring; 3. a load-bearing raceway; 4. a steel ball; 5. sealing the raceway; 6. sealing directly; 7. sealing the framework; 8. a self-tightening coil spring; 9. a first oil inlet; 10. a sealing plug; 11. a second oil inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a seal structure for slewing bearing, including outer lane 1, inner circle 2, bear raceway 3, the steel ball 4, sealed raceway 5, straight seal 6, skeleton seal 7, self-tightening coil spring 8, first oil inlet 9, sealing plug 10 and second oil inlet 11, the inboard of outer lane 1 is provided with inner circle 2, and bear raceway 3 has all been seted up in the inboard of outer lane 1 and the outside of inner circle 2, steel ball 4 is installed in the inside of bearing raceway 3, the upper and lower both sides of outer lane 1 and inner circle 2 all are provided with skeleton seal 7, and self-tightening coil spring 8 is installed on the right side of skeleton seal 7, the upper and lower both sides of bearing raceway 3 all are provided with sealed raceway 5, and the internally mounted of sealed raceway 5 has straight seal 6.

In the embodiment, a second oil inlet 11 is formed in the inner part of the upper end of the inner ring 2, a sealing plug 10 is tightly attached to the inner part above the second oil inlet 11, the lower end of the second oil inlet 11 is communicated with the bearing raceway 3, and the main section of the second oil inlet 11 is of an inclined structure, so that lubricating oil can be conveyed into the bearing raceway 3 by the second oil inlet 11 to lubricate the slewing bearing;

the left upper part of the bearing raceway 3 is communicated with the lower end of a first oil inlet 9, the first oil inlet 9 is arranged in the upper end of the outer ring 1, a sealing plug 10 is tightly attached to the inner part above the first oil inlet 9, and the main section of the first oil inlet 9 is of an inclined structure, so that lubricating oil is conveyed into the bearing raceway 3 from the other surface of the bearing raceway 3 by the first oil inlet 9, and the bearing raceway 3 is lubricated in multiple directions;

the straight seal 6 is positioned between the framework seal 7 and the sealing raceway 5, and the straight seal 6 is symmetrically arranged relative to the transverse central line of the bearing raceway 3, so that multiple sealing can be performed on the slewing bearing by using the straight seal 6 and the framework seal 7, and the sealing performance is improved;

the main section of the framework seal 7 is of a U-shaped structure, the framework seal 7 is tightly attached to the outer ring 1 and the inner ring 2, and the framework seal 7 can be used for sealing the slewing bearing in the design, so that impurities are prevented from entering the slewing bearing.

The working principle is as follows: when the sealing structure for the slewing bearing is used, firstly, a user firstly installs the whole device shown in figure 2 on a corresponding machine, then the slewing bearing can be used, a framework seal 7 is arranged on the axial matching surface of an outer ring 1 and an inner ring 2, the framework seal 7 is matched with a self-tightening spiral spring 8, the framework seal 7 keeps the shape of the framework seal 7 and has certain tension, the framework seal 7 can prevent external dust, impurities and the like from entering the interior of the slewing bearing, so that the framework seal 7 can protect the interior of the slewing bearing, an annular bearing raceway 3 is arranged between the radial matching surfaces of the outer ring 1 and the inner ring 2, a plurality of steel balls 4 which are annularly distributed along the annular bearing raceway 3 are arranged in the annular bearing raceway 3 of the slewing bearing, the operation of the slewing bearing is convenient, and an upper straight seal 6 and a lower straight seal 6 are also arranged between the framework seal 7 and the sealing, the direct seal 6 can prevent the slewing bearing from leaking oil, the structure can play a role of double sealing, the internal environment of the slewing bearing is protected, the slewing bearing can work in severe environment, the stability of the equipment is greatly improved, and the service life of the equipment is greatly prolonged;

after the slewing bearing is used for a period, the bearing raceway 3 can be lubricated, according to fig. 1 and fig. 4, the sealing plugs 10 in the first oil inlet 9 and the second oil inlet 11 are pulled out, lubricating oil is conveyed into the bearing raceway 3 from the first oil inlet 9 and the second oil inlet 11, the rolling surfaces of the bearing raceway 3 and the steel ball 4 are lubricated, smooth operation of the slewing bearing is facilitated, after lubrication is completed, the sealing plugs 10 are plugged into the first oil inlet 9 and the second oil inlet 11 again, the first oil inlet 9 and the second oil inlet 11 are enclosed, impurities are prevented from entering the slewing bearing through the first oil inlet 9 and the second oil inlet 11, the above is the use process of the whole device, and the content which is not described in detail in the description belongs to the prior art known by technicians in the field.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A seal structure for a slewing bearing, comprising an outer ring (1) and a steel ball (4), characterized in that: the inboard of outer lane (1) is provided with inner circle (2), and the inboard of outer lane (1) and the outside of inner circle (2) have all been seted up and have been born weight of raceway (3), the inside at bearing weight of raceway (3) is installed in steel ball (4), the upper and lower both sides of outer lane (1) and inner circle (2) all are provided with skeleton seal (7), and the right side of skeleton seal (7) installs from tight coil spring (8), the upper and lower both sides that bear weight of raceway (3) all are provided with sealed raceway (5), and the internally mounted of sealed raceway (5) has straight seal (6).

2. A seal structure for a slewing bearing according to claim 1, wherein: a second oil inlet (11) is formed in the inner portion of the upper end of the inner ring (2), a sealing plug (10) is tightly attached to the inner portion above the second oil inlet (11), the lower end of the second oil inlet (11) is communicated with the bearing roller path (3), and meanwhile the main section of the second oil inlet (11) is of an inclined structure.

3. A seal structure for a slewing bearing according to claim 1, wherein: the bearing raceway (3) is communicated with the lower end of a first oil inlet (9) at the upper left side, the first oil inlet (9) is arranged in the upper end of the outer ring (1), a sealing plug (10) is tightly attached to the inner part above the first oil inlet (9), and meanwhile, the main section of the first oil inlet (9) is of an inclined structure.

4. A seal structure for a slewing bearing according to claim 1, wherein: the straight seal (6) is positioned between the framework seal (7) and the sealing roller path (5), and the straight seal (6) is symmetrically arranged relative to the transverse center line of the bearing roller path (3).

5. A seal structure for a slewing bearing according to claim 1, wherein: the main section of the framework seal (7) is of a U-shaped structure, and the framework seal (7) is tightly attached to the outer ring (1) and the inner ring (2).