CN211501309U

CN211501309U - Maintenance-free outer spherical surface bearing

Info

Publication number: CN211501309U
Application number: CN201922187010.1U
Authority: CN
Inventors: 泮海昌
Original assignee: Zhongda Hebei Bearing Manufacturing Co ltd
Current assignee: Zhongda Hebei Bearing Manufacturing Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-09-15
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a maintenance-free spherical outside surface bearing, which comprises an inner ring, wherein the top end of the inner ring is symmetrically provided with inner sealing rings, the outer side of each inner sealing ring is symmetrically provided with an outer sealing ring, the outer side of the circumference of each outer sealing ring is provided with a wear-resistant resin ring, a cavity is formed between the two inner sealing rings, lubricating grease is arranged in the cavity, a ball is arranged at the middle position of the cavity, a ball retainer is arranged at the outer side of the circumference of the ball, and the top end of each inner sealing; wherein, the inner seal top is provided with the wedge arch, and protruding one side of wedge is provided with supplementary lip, and one side of inner seal and the relative one side symmetry of supplementary lip are provided with the tapered slot. Has the advantages that: structural design is reasonable, makes this bearing have the advantage of exempting from the oiling, non-maintaining and longe-lived, and this bearing can improve the reliability simultaneously environmental protection more, reduces the maintenance cost, reduces the machine halt maintenance time, has strengthened the adaptability to various operational environment.

Description

Maintenance-free outer spherical surface bearing

Technical Field

The utility model relates to a bearing technical field particularly, relates to a non-maintaining insert bearing.

Background

Agricultural machines are mostly operated in hot dusty environments, and therefore special requirements are also placed on the bearings used. Generally, the choice of bearing is mainly based on two aspects, bearing type and bearing accuracy. Agricultural bearings are generally required to withstand sustained vibration and high impact loads; the design of the sealing condition with delicate and high precision ensures that the machine can reliably run in various weather conditions.

Agricultural machinery is various, common harvesting machinery such as tillers, tractors, rakes, banders and high-power combine harvesters exist, working conditions required by various different machines are mostly very severe, and particularly high-humidity high-temperature dusty environments in summer, spring and autumn have very high requirements on the sealing performance of bearings. The continuous vibration and shock during machine operation requires the bearings to have greater load carrying capacity.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the problem in the correlation technique, the utility model provides a non-maintaining insert bearing to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

a maintenance-free outer spherical bearing comprises an inner ring, wherein inner sealing rings are symmetrically arranged at the top end of the inner ring, outer sealing rings are symmetrically arranged on the outer sides of the inner sealing rings, wear-resistant resin rings are arranged on the outer sides of the circumference of the outer sealing rings, a cavity is formed between the two inner sealing rings, lubricating grease is arranged in the cavity, balls are arranged in the middle of the cavity, ball holders are arranged on the outer sides of the circumferences of the balls, and an outer ring is arranged at the top end of the inner sealing ring; wherein, interior sealing washer top is provided with the wedge arch, the protruding one side of wedge is provided with supplementary lip, one side of interior sealing washer and with the relative one side symmetry of supplementary lip is provided with the tapered groove, the bottom of interior sealing washer is provided with first lip, first lip one side is provided with the second lip, the second lip is kept away from one side of first lip is provided with the third lip.

Furthermore, in order to enable the annular cone to be matched with the conical groove, the inner sealing ring is attached to the outer sealing ring more closely, the inner sealing ring is prevented from moving radially to cause poor sealing effect, assembly is facilitated, assembly precision is improved, a through hole is formed in the middle of the outer sealing ring, a first groove is formed in the through hole in a surrounding mode, and the annular cone is symmetrically arranged in the first groove.

Furthermore, in order to enable the inner ring to be easily assembled with the shaft, chamfers are arranged at two ends of the inner ring, a first arc groove is formed in the middle position of the outer side of the circumference of the inner ring, and second arc grooves are symmetrically formed in two sides of the first arc groove.

Furthermore, in order to increase the sealing effect, the sealing effect is better by matching with the three-lip seal, so that the lubricating grease in the cavity can not overflow, the bearing is free from maintenance in the service life, and the circular arc groove two is matched with the first lip, the second lip and the third lip.

Further, in order to enable the second groove to be matched with the wedge-shaped protrusion, the inner sealing ring is convenient to assemble and meanwhile is matched with the auxiliary lip to further enhance the sealing effect, a third arc groove is formed in the middle of the inner wall of the outer ring, and two sides of the third arc groove are symmetrically provided with the second groove.

Furthermore, in order to increase the strength of the bearing and enable the bearing to normally operate under various working conditions, the outer sealing ring and the inner ring are in interference fit.

The utility model has the advantages that:

(1) the utility model has the advantages of reasonable design, make this bearing have the advantage of exempting from oiling, non-maintaining and longe-lived, this bearing can improve the reliability environmental protection more simultaneously, reduces the maintenance cost, reduces the machine halt maintenance time, has strengthened the adaptability to various operational environment.

(2) The arc groove that through setting up the inner seal circle and the inner circle circumference outside is two-phase cooperation to make first lip and second lip and third lip all contact with the arc groove, become traditional right angle and contact and be the arc contact, this kind of mode has increased sealed effect, and the sealed effect that makes of cooperation three lips is better, and then can guarantee that the lubricating grease in the cavity can not spill over, has guaranteed that the bearing is exempted from to maintain in its life.

(3) Through interference fit between setting up outer seal ring and the inner circle to it is more close to make laminating between outer seal ring and the inner circle, can not take place the outer seal ring and rotate, the condition of falling the piece appears, has increased the intensity of this bearing simultaneously, makes it can normal operating under various operating modes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a maintenance-free spherical outer bearing according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of an inner race of a maintenance-free spherical outer bearing according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an outer seal ring of a maintenance-free outer spherical bearing according to an embodiment of the present invention.

In the figure:

1. an inner ring; 101. chamfering; 102. a first arc groove; 103. a second arc groove; 2. an inner seal ring; 201. a wedge-shaped protrusion; 202. an auxiliary lip; 203. a tapered groove; 204. a first lip; 205. a second lip; 206. a third lip; 3. an outer sealing ring; 301. a through hole; 302. a first groove; 303. an annular cone; 4. a wear-resistant resin ring; 5. a cavity; 6. lubricating grease; 7. a ball bearing; 8. a ball retainer; 9. an outer ring; 901. a third arc groove; 902. and a second groove.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a non-maintaining insert bearing.

The present invention is further explained with reference to the accompanying drawings and the detailed description, as shown in fig. 1-4, according to the maintenance-free spherical outside bearing of the embodiment of the present invention, the maintenance-free spherical outside bearing includes an inner ring 1, an inner seal ring 2 is symmetrically disposed on the top end of the inner ring 1, an outer seal ring 3 is symmetrically disposed on the outer side of the inner seal ring 2, a wear-resistant resin ring 4 is disposed on the circumferential outer side of the outer seal ring 3, a cavity 5 is formed between the two inner seal rings 2, a lubricating grease 6 is disposed in the cavity 5, a ball 7 is disposed in the middle of the cavity 5, a ball holder 8 is disposed on the circumferential outer side of the ball 7, and an outer ring 9 is disposed; wherein, 2 tops of interior sealing washer are provided with the protruding 201 of wedge, the protruding 201 one side of wedge is provided with supplementary lip 202, one side of interior sealing washer 2 and with the relative one side symmetry of supplementary lip 202 is provided with tapered slot 203, the bottom of interior sealing washer 2 is provided with first lip 204, first lip 204 one side is provided with second lip 205, second lip 205 is kept away from one side of first lip 204 is provided with third lip 206.

By means of the scheme, the bearing is reasonable in structural design, has the advantages of being free of oil injection, maintenance and long in service life, can improve reliability and meanwhile is more environment-friendly, maintenance cost is reduced, shutdown maintenance time is shortened, and adaptability to various working environments is enhanced.

In one embodiment, a through hole 301 is formed in the middle of the outer sealing ring 3, a first groove 302 is formed in the through hole 301 in a surrounding manner, and a ring cone 303 is symmetrically arranged in the first groove 302, so that the ring cone 303 is matched with the tapered groove 203, the inner sealing ring 2 is more closely attached to the outer sealing ring 3, the inner sealing ring 2 is prevented from moving in the radial direction of the ring cone 303, the sealing effect is not good, the assembly is facilitated, and the assembly precision is improved.

In one embodiment, chamfers 101 are arranged at two ends of the inner ring 1, a first arc groove 102 is arranged at the middle position of the outer side of the circumference of the inner ring 1, and second arc grooves 103 are symmetrically arranged at two sides of the first arc groove 102, so that the inner ring 1 is easier to assemble with a shaft.

In one embodiment, the second arc groove 103 is matched with the first lip 204, the second lip 205 and the third lip 206, so that the first lip 204, the second lip 205 and the third lip 206 are both contacted with the second arc groove 103, the traditional right-angle contact is changed into arc contact, the sealing effect is increased in such a way, the sealing effect is better by matching with the three-lip seal, the lubricating grease 6 in the cavity 5 can be further ensured not to overflow, and the bearing is free from maintenance in the service life.

In one embodiment, an arc groove III 901 is formed in the middle of the inner wall of the outer ring 9, and grooves II 902 are symmetrically formed in two sides of the arc groove III 901, so that the grooves II 902 are matched with the wedge-shaped protrusions 201, the inner seal ring 2 is convenient to assemble, and the auxiliary lip 202 is matched to further enhance the sealing effect.

In one embodiment, the outer sealing ring 3 and the inner ring 1 are in interference fit, so that the outer sealing ring 3 and the inner ring 1 are attached more closely, the situations that the outer sealing ring 3 rotates and a sheet falls do not occur, and meanwhile, the strength of the bearing is increased, so that the bearing can normally run under various working conditions.

To sum up, with the help of the above technical scheme of the utility model, through setting up interior sealing washer 2 with in the 1 circumference outside of inner circle circular arc recess two 103 cooperate, thereby make first lip 204 with second lip 205 reaches third lip 206 all with circular arc recess two 103 contact, become traditional right angle contact and be the arc contact, this kind of mode has increased sealed effect, and the sealed effect that makes of cooperation three lips is better, and then can guarantee in the cavity 5 lubricating grease 6 can not spill over, has guaranteed that the bearing is exempted from to maintain in its life. Through setting up outer sealing ring 3 with interference fit between the inner circle 1 makes outer sealing ring 3 with laminate more closely between the inner circle 1, can not take place the circumstances that outer sealing ring 3 rotated, the piece falls appear, has increased the intensity of this bearing simultaneously, makes it can normal operating under various operating modes. Thereby make structural design reasonable, make this bearing have exempt from oiling, non-maintaining and longe-lived advantage, this bearing can improve the reliability more environmental protection simultaneously, reduces the maintenance cost, reduces the machine halt maintenance time, has strengthened the adaptability to various operational environment.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The maintenance-free outer spherical bearing is characterized by comprising an inner ring (1), wherein inner sealing rings (2) are symmetrically arranged at the top end of the inner ring (1), outer sealing rings (3) are symmetrically arranged on the outer sides of the inner sealing rings (2), wear-resistant resin rings (4) are arranged on the outer sides of the circumferences of the outer sealing rings (3), a cavity (5) is formed between the two inner sealing rings (2), lubricating grease (6) is arranged in the cavity (5), balls (7) are arranged at the middle positions of the cavity (5), a retainer (8) is arranged on the outer sides of the circumferences of the balls (7), and an outer ring (9) is arranged at the top end of the inner sealing ring (2);

wherein, interior sealing washer (2) top is provided with protruding (201) of wedge, protruding (201) one side of wedge is provided with supplementary lip (202), one side of interior sealing washer (2) and with the relative one side symmetry of supplementary lip (202) is provided with tapered slot (203), the bottom of interior sealing washer (2) is provided with first lip (204), first lip (204) one side is provided with second lip (205), keep away from second lip (205) one side of first lip (204) is provided with third lip (206).

2. The maintenance-free outer spherical bearing according to claim 1, characterized in that a through hole (301) is formed in the middle of the outer sealing ring (3), a first groove (302) is formed around the through hole (301), and annular cones (303) are symmetrically arranged in the first groove (302).

3. The maintenance-free spherical outside bearing according to claim 1, characterized in that both ends of the inner ring (1) are provided with chamfers (101), a first arc groove (102) is arranged at the middle position outside the circumference of the inner ring (1), and a second arc groove (103) is symmetrically arranged at both sides of the first arc groove (102).

4. A service free spherical outer bearing according to claim 3, wherein the second arc shaped groove (103) cooperates with the first lip (204), the second lip (205) and the third lip (206).

5. The maintenance-free spherical outer bearing according to claim 1, wherein a third arc-shaped groove (901) is formed in the middle of the inner wall of the outer ring (9), and a second groove (902) is symmetrically formed in two sides of the third arc-shaped groove (901).

6. A maintenance-free spherical outer bearing according to claim 1, characterized in that the outer sealing ring (3) is in interference fit with the inner ring (1).