CN210034187U

CN210034187U - Deep groove ball bearing with double-sided double-layer combined sealing mechanism

Info

Publication number: CN210034187U
Application number: CN201920821653.4U
Authority: CN
Inventors: 王敬美
Original assignee: Yongning Taizhou Plain Bearing Mnanufacture Co Ltd
Current assignee: Yongning Taizhou Plain Bearing Mnanufacture Co Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-02-07
Anticipated expiration: 2029-06-03

Abstract

The utility model provides a two-sided double-deck combination sealing mechanism's deep groove ball bearing belongs to bearing technical field. It has solved the not good problem of current bearing leakproofness. The deep groove ball bearing of the double-sided double-layer combined sealing mechanism comprises a bearing inner ring, a bearing outer ring, a first sealing ring and a second sealing ring, wherein the first sealing ring is composed of a first rigid framework and a first rubber sealing element, the second sealing ring is composed of a second rigid framework and a second rubber sealing element, an outer diameter end and an inner diameter end of the first rubber sealing element and the second rubber sealing element are respectively provided with an outer sealing lip and an inner sealing lip, the inner circumferential wall of the bearing outer ring, which is located at the second rubber sealing element, is provided with a first sealing groove, the outer circumferential wall of the bearing inner ring, which is located at the first rubber sealing element, is provided with a second sealing groove, the inner sealing lips of the first rubber sealing element and the second rubber sealing element are respectively composed of the first sealing lip, the. The utility model has the advantage of good sealing performance.

Description

Deep groove ball bearing with double-sided double-layer combined sealing mechanism

Technical Field

The utility model belongs to the technical field of the bearing, a deep groove ball bearing is related to, in particular to deep groove ball bearing of two-sided double-deck combination sealing mechanism.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The existing bearing generally comprises an outer ring, a sealing ring and an inner ring, wherein the sealing ring generally comprises a rubber body and a framework, is arranged in sealing grooves on two end faces of the outer ring of the bearing and has a structure that an inner lip of the sealing ring is in contact with a groove of the inner ring. Because the bearing can produce a large amount of heats after the operation, the heat can't be given off, makes the bearing inner chamber temperature rise, and pressure increase, when the temperature of bearing inner chamber and pressure surpass a definite value, the expanded gas in the intracavity can pop out the sealing washer, influences the life of bearing, still probably makes complete equipment unable normal work. Meanwhile, the common bearing is frequently required to be oiled in the operation process, and grease in the bearing can stick to dust in the air, so that the abrasion force is increased in the operation process, the flexibility is weakened, and the service life is shortened. Meanwhile, after the sealing ring is damaged, workers do not find the sealing ring in time, so that impurities are easy to enter the bearing to increase abrasion and weaken flexibility, the service life of the bearing is influenced, and even the matched equipment cannot work normally.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a plurality of seal lips, hardness height, sealed effectual and long service life's deep groove ball bearing.

The purpose of the utility model can be realized by the following technical proposal: the deep groove ball bearing is characterized by further comprising a first sealing ring and a second sealing ring, wherein the first sealing ring and the second sealing ring are arranged between the bearing outer ring and the bearing inner ring and located on the outer side of the second sealing ring, the outer diameter of the first sealing ring is larger than that of the second sealing ring, the first sealing ring is composed of a first rigid framework and a first rubber sealing element attached to the first rigid framework, the second sealing ring is composed of a second rigid framework and a second rubber sealing element attached to the second rigid framework, the outer diameter end and the inner diameter end of the first rubber sealing element and the second rubber sealing element are respectively provided with an outer sealing lip and an inner sealing lip which are fixedly connected with the first rubber sealing element and the second rubber sealing element, and the outer bearing ring is located on the inner circumferential wall of the second rubber sealing element and provided with an outer sealing lip and an inner sealing lip which are fixedly connected with the first rubber sealing element and the second rubber sealing element Seal lip matched with seal groove one, the bearing inner circle be located the outer circumferential wall of rubber seal spare department offer with rubber seal ring one in seal lip matched with seal groove two, the inner seal lip of rubber seal spare one and rubber seal spare two comprises the seal lip one, seal lip two and the dust lip of slope setting that set up by the slope, seal lip two set up at the inboard of corresponding rubber seal spare one and rubber seal spare two and be located the inboard of corresponding seal lip one, and the inner of seal lip two personally submits the slope setting, be provided with the extension portion of radial outside extension and restriction corresponding dust lip on the outer circumferential wall of the dust lip department that the bearing inner circle is located corresponding rubber seal spare one, and the outer terminal surface of extension portion is the same level with the outer terminal surface of corresponding bearing inner circle mutually.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, the outer diameter of the first rubber sealing part is larger than that of the second rubber sealing part, the outer diameter of the first rigid framework is larger than that of the second rigid framework, the cross section of the first rigid framework is symmetrically arranged in two L shapes, and the cross section of the second rigid framework is also symmetrically arranged in two L shapes.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, the first sealing groove consists of an end face A, a wall face B and an end face C, a fillet is arranged at the joint of the end face A and the wall face B in the first sealing groove, a fillet is arranged at the joint of the end face A and the inner circumferential wall of the outer bearing ring, the end face A is parallel to the outer end face of the outer bearing ring, and the end face C in the first sealing groove is obliquely arranged.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, a fillet is arranged at the joint of the end surface of the outer ring of the bearing, which is abutted against the corresponding rubber sealing element, and the inner circumferential wall of the outer ring of the corresponding bearing.

In foretell deep groove ball bearing of double-deck combination sealing mechanism of two-sided, seal groove two constitute by D terminal surface, E wall and F terminal surface, seal groove two in the D terminal surface be the slope setting, seal groove two in the E wall be provided with the radius angle with the junction of F terminal surface, seal groove two in the F terminal surface be the circular arc setting, and the F terminal surface is provided with the radius angle with the junction of the outer periphery wall of corresponding bearing inner circle.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, the joint between the end surface of the inner ring of the bearing, which is abutted against the two corresponding rubber sealing elements, and the outer circumferential wall of the inner ring of the corresponding bearing is provided with a fillet.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, a fillet is arranged at the joint of the inner end surface of the extension part and the outer circle shaft wall of the corresponding bearing inner ring.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, a gap is reserved between the end face, facing the outer circumferential wall of the bearing inner ring, of the dust lip in the second rubber sealing element and the outer circumferential wall of the corresponding bearing inner ring.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, two isosceles trapezoid gaps with symmetrical cross sections are reserved between the end faces, facing the corresponding rubber sealing element I and the rubber sealing element II, of the dust-proof lips in the rubber sealing element I and the rubber sealing element II and the end faces, facing the corresponding dust-proof lips, of the corresponding rubber sealing element I and the rubber sealing element II.

In the deep groove ball bearing of the double-sided double-layer combined sealing mechanism, a gap with two right trapezoid cross sections symmetrically arranged is reserved between the end surface of the first sealing lip facing the corresponding second sealing lip in the first rubber sealing element and the end surface of the second sealing lip facing the corresponding first sealing lip.

Compared with the prior art, this deep groove ball bearing of two-sided double-deck combination sealing mechanism has an advantage:

1. the structure is arranged, so that after one layer of sealing ring is damaged, a layer of sealing ring is reserved, the protection and dust prevention effects are continuously achieved, compared with the single sealing ring, the service life of the bearing is prolonged, and the sealing effect of the bearing is improved;

2. the structure of the sealing ring structure strengthens the hardness of the sealing ring and reduces the probability of the spring-out of the sealing ring;

3. the outer diameter end and the inner diameter end of the first rubber sealing element and the second rubber sealing element are respectively provided with an outer sealing lip and an inner sealing lip which are fixedly connected with the first rubber sealing element and the second rubber sealing element, the inner circumferential wall of the outer ring of the bearing, which is positioned at the second rubber sealing element, is provided with a first sealing groove matched with the outer sealing lip of the second rubber sealing element, the outer circumferential wall of the inner ring of the bearing, which is positioned at the first rubber sealing element, is provided with a second sealing groove matched with the inner sealing lip of the first rubber sealing ring, the inner sealing lips of the first rubber sealing element and the second rubber sealing element are respectively composed of a first sealing lip, a second sealing lip and a dust-proof lip, the second sealing lip is arranged at the inner side of the first rubber sealing element and the second rubber sealing element and is positioned at the inner side of the corresponding first sealing lip, the inner end surfaces of the second sealing lips are obliquely arranged, and the outer circumferential wall, the outer end face of the extension portion is flush with the outer end face of the corresponding bearing inner ring, the sealing effect is improved due to the design of the plurality of sealing lips, and meanwhile, the entering of impurities is reduced.

Drawings

Fig. 1 is a partial sectional structural schematic diagram of a deep groove ball bearing of a double-sided double-layer combined sealing mechanism.

Fig. 2 is an enlarged view of circle H in fig. 1 of a deep groove ball bearing of the double-sided double-layer combined sealing mechanism.

In the figure, 1, a bearing inner ring; 2. a bearing outer race; 3. a ball bearing; 4. a holder; 5. a first sealing ring; 6. a second sealing ring; 7. a first rigid framework; 8. a first rubber sealing element; 9. a second rigid framework; 10. a second rubber sealing element; 11. an outer sealing lip; 12. an inner sealing lip; 13. a first sealing groove; 14. a second sealing groove; 15. a first sealing lip; 16. a second sealing lip; 17. a dust lip; 18. an extension portion.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the deep groove ball bearing of the double-sided double-layer combined sealing mechanism comprises a bearing inner ring 1, a bearing outer ring 2, a ball 3, a retainer 4, a first sealing ring 5 and a second sealing ring 6, wherein the first sealing ring 5 and the second sealing ring 6 are both arranged between the bearing outer ring 2 and the bearing inner ring 1, the first sealing ring 5 is positioned at the outer side of the second sealing ring 6, the outer diameter of the first sealing ring 5 is larger than the outer diameter of the second sealing ring 6, the first sealing ring 5 comprises a first rigid framework 7 and a first rubber sealing element 8 attached to the first rigid framework 7, the second sealing ring 6 comprises a second rigid framework 9 and a second rubber sealing element 10 attached to the second rigid framework 9, the outer diameter end and the inner diameter end of the first rubber sealing element 8 and the second rubber sealing element 10 are respectively provided with an outer sealing lip 11 and an inner sealing lip 12 which are fixedly connected with the corresponding first rubber sealing element 8, the bearing outer ring 2 is provided with a first seal groove 13 matched with an outer seal lip 11 in the second rubber seal 10 on the inner circumferential wall at the position of the second rubber seal 10, the bearing inner ring 1 is provided with a second seal groove 14 matched with a middle inner seal lip 12 in the first rubber seal 8 on the outer circumferential wall at the position of the first rubber seal 8, the first rubber seal 8 and the inner seal lip 12 of the second rubber seal 10 are respectively composed of a first seal lip 15 arranged obliquely outwards, a second seal lip 16 and a dust-proof lip 17 arranged obliquely outwards, the second seal lip 16 is arranged at the inner side corresponding to the first rubber seal 8 and the second rubber seal 10 and is arranged at the inner side of the corresponding first seal lip 15, the inner end surface of the second seal lip 16 is arranged obliquely, the outer circumferential wall at the position of the dust-proof lip 17 in the corresponding first rubber seal 8 of the bearing inner ring 1 is provided with an extension part 18 which extends outwards in the radial direction and, the outer end face of the extension part 18 is flush with the outer end face of the corresponding bearing inner ring 1, the outer diameter of the rubber sealing piece I8 is larger than the outer diameter of the rubber sealing piece II 10, the outer diameter of the rigid framework I7 is larger than the outer diameter of the rigid framework II 9, the cross section of the rigid framework I7 is in two L shapes which are symmetrically arranged, the cross section of the rigid framework II 9 is also in two L shapes which are symmetrically arranged, a gap is reserved between the end face, facing the outer circumferential wall of the bearing inner ring 1, of the dust lip 17 in the rubber sealing piece II 10 and the outer circumferential wall of the corresponding bearing inner ring 1, a gap in two isosceles trapezoids which are symmetrically arranged in the cross section is reserved between the end face, facing the corresponding rubber sealing piece I8 and the rubber sealing piece II 10, of the rubber sealing piece I8 and the rubber sealing piece II 10 and the end face, facing the corresponding dust, two right-angle trapezoidal gaps with symmetrical cross sections are reserved between the end face, facing the corresponding seal lip II 16, of the seal lip I8 and the seal lip II 10, facing the corresponding seal lip II 16, and the end face, facing the corresponding seal lip I15, of the seal lip II 16.

In order to make the sealing performance of the joint better after assembly and make the joint less prone to wear, the first sealing groove 13 is composed of an end face A, a wall face B and an end face C, a fillet is arranged at the joint of the end face A and the wall face B in the first sealing groove 13, a fillet is arranged at the joint of the end face A and the inner circumferential wall of the outer bearing ring 2, the end face A is parallel to the outer end face of the outer bearing ring 2, the end face C in the first sealing groove 13 is obliquely arranged, the second sealing groove 14 is composed of a end face D, a wall face E and a end face F, the end face D in the second sealing groove 14 is obliquely arranged, a fillet is arranged at the joint of the wall face E and the end face F in the second sealing groove 14, the end face F and the outer circumferential wall of the corresponding inner bearing ring 1 are arranged in an arc shape, a fillet is arranged at the joint of the end face F and the outer circumferential wall of the corresponding outer bearing ring 2, the end face of the outer bearing The joints of the end surfaces of the bearing inner rings 1, which are abutted against the corresponding second rubber sealing elements 10, and the outer circumferential walls of the corresponding bearing inner rings 1 are provided with fillets, and the joints of the inner end surfaces of the extension parts 18 and the outer circumferential shaft walls of the corresponding bearing inner rings 1 are provided with fillets.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A deep groove ball bearing of a double-sided double-layer combined sealing mechanism comprises a bearing inner ring (1), a bearing outer ring (2), balls (3) and a retainer (4), and is characterized by further comprising a first sealing ring (5) and a second sealing ring (6), wherein the first sealing ring (5) and the second sealing ring (6) are arranged between the bearing outer ring (2) and the bearing inner ring (1), the first sealing ring (5) is located on the outer side of the second sealing ring (6), the outer diameter of the first sealing ring (5) is larger than that of the second sealing ring (6), the first sealing ring (5) comprises a first rigid framework (7) and a first rubber sealing part (8) attached to the first rigid framework (7), and the second sealing ring (6) comprises a second rigid framework (9) and a second rubber sealing part (10) attached to the second rigid framework (9), the outer diameter end and the inner diameter end of the rubber sealing element I (8) and the rubber sealing element II (10) are respectively provided with an outer sealing lip (11) and an inner sealing lip (12) which are fixedly connected with the corresponding rubber sealing element I (8) and the corresponding rubber sealing element II (10), the inner circumferential wall of the bearing outer ring (2) at the rubber sealing element II (10) is provided with a first sealing groove (13) matched with the outer sealing lip (11) in the rubber sealing element II (10), the outer circumferential wall of the bearing inner ring (1) at the rubber sealing element I (8) is provided with a second sealing groove (14) matched with the inner sealing lip (12) in the rubber sealing ring I, the first sealing lip (15) of the rubber sealing element I (8) and the inner sealing lip (12) of the rubber sealing element II (10) are respectively formed by a first sealing lip (15) which is obliquely arranged, a second sealing lip (16) and a dust lip (17) which is obliquely arranged outwards, the second sealing lip (16) is arranged on the inner side of the first corresponding rubber sealing element (8) and the second corresponding rubber sealing element (10) and is located on the inner side of the first corresponding sealing lip (15), the inner end face of the second sealing lip (16) is obliquely arranged, an extending portion (18) which radially extends outwards and limits the corresponding dust lip (17) is arranged on the outer circumferential wall of the dust lip (17) located in the first corresponding rubber sealing element (8) of the bearing inner ring (1), and the outer end face of the extending portion (18) is flush with the outer end face of the corresponding bearing inner ring (1).

2. The deep groove ball bearing of the double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein the outer diameter of the first rubber sealing element (8) is larger than that of the second rubber sealing element (10), the outer diameter of the first rigid framework (7) is larger than that of the second rigid framework (9), the cross section of the first rigid framework (7) is symmetrically provided with two L-shaped structures, and the cross section of the second rigid framework (9) is symmetrically provided with two L-shaped structures.

3. The deep groove ball bearing of a double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein the first sealing groove (13) is composed of an A end face, a B wall face and a C end face, a fillet is arranged at the joint of the A end face and the B wall face in the first sealing groove (13), a fillet is arranged at the joint of the A end face and the inner circumferential wall of the bearing outer ring (2), the A end face is parallel to the outer end face of the bearing outer ring (2), and the C end face in the first sealing groove (13) is obliquely arranged.

4. The deep groove ball bearing of the double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein the joint of the end surface of the bearing outer ring (2) which is in contact with the corresponding rubber sealing element I (8) and the inner circumferential wall of the corresponding bearing outer ring (2) is provided with a fillet.

5. The deep groove ball bearing of the double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein the second sealing groove (14) is composed of a D-end surface, an E-wall surface and an F-end surface, the D-end surface in the second sealing groove (14) is arranged in an inclined manner, a rounded corner is arranged at the junction of the E-wall surface and the F-end surface in the second sealing groove (14), the F-end surface in the second sealing groove (14) is arranged in an arc, and a rounded corner is arranged at the junction of the F-end surface and the outer circumferential wall of the corresponding bearing inner ring (1).

6. The deep groove ball bearing of the double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein the joints of the end surfaces of the inner bearing rings (1) which are in contact with the corresponding second rubber sealing elements (10) and the outer circumferential walls of the corresponding inner bearing rings (1) are provided with rounded corners.

7. The deep groove ball bearing of the double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein the junction of the inner end surface of the extension part (18) and the outer circular shaft wall of the corresponding bearing inner ring (1) is provided with a fillet.

8. The deep groove ball bearing of a double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein a clearance is left between the end face of the dust lip (17) in the second rubber sealing member (10) facing the outer circumferential wall of the inner bearing ring (1) and the outer circumferential wall of the corresponding inner bearing ring (1).

9. The deep groove ball bearing of a double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein two isosceles trapezoid gaps with symmetrical cross sections are left between the end faces of the dust-proof lips (17) of the rubber seal I (8) and the rubber seal II (10) facing the corresponding rubber seal I (8) and the corresponding rubber seal II (10) and the end faces of the corresponding rubber seal I (8) and the corresponding rubber seal II (10) facing the corresponding dust-proof lips (17).

10. The deep groove ball bearing of the double-sided double-layer combined sealing mechanism as claimed in claim 1, wherein two right-angled trapezoidal gaps with symmetrical cross sections are left between the end face of the first sealing lip (15) facing the corresponding second sealing lip (16) and the end face of the second sealing lip (16) facing the corresponding first sealing lip (15) in the first rubber sealing element (8) and the second rubber sealing element (10).