Bearing with sealing structure

Abstract

The utility model discloses a bearing with a sealing structure, which comprises a bearing inner ring and a bearing outer ring, a retainer is arranged between the bearing inner ring and the bearing outer ring, a plurality of ball pockets are circumferentially distributed on the retainer, balls are arranged in the ball pockets, and a plurality of first through holes are formed in the retainer in a penetrating manner; according to the utility model, the annular step tables on the end surfaces of the two sides of the bearing inner ring and the bearing outer ring can form labyrinth seal with the matching surfaces of the first sealing ring and the second sealing ring, so that a sealing effect is achieved between the bearing inner ring and the bearing outer ring, dust and impurities entering the inner side of the bearing are reduced, and the service life of the bearing is prolonged; according to the bearing outer ring, the first sealing ring and the second sealing ring can be clamped on the two sides of the retainer through cooperation of the inner threaded pipe and the screw, so that the assembly efficiency is effectively improved, threaded holes do not need to be formed in the bearing outer ring, the structural strength of the bearing outer ring can be guaranteed, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field, concretely is a bearing with sealing structure. BACKGROUND

[0002] The bearing is an important part in contemporary mechanical equipment, its main function is support mechanical rotary body, reduce its friction coefficient in the movement process, and guarantee its rotation precision, in order to improve the service life of bearing in harsh environment, at present, most bearings will install dust cover or sealing cover between inner and outer rings to improve the sealing property of bearing and reduce the probability of dust and impurities entering the bearing interior.

[0003] Through the retrieval, the patent with the announcement number CN220890796U discloses a kind of high sealing bearing, it is fixed by adopting multiple bolts to sealing cover, so that sealing cover can be more with outer ring, in turn eliminate the gap between sealing cover and outer ring, again by the end of sealing cover is inserted in installation groove, so that dust on the outside cannot enter the bearing interior from the gap between sealing cover and inner ring, to improve the overall sealing property of bearing, finally by being equipped with ball to reduce the friction between sealing cover and inner ring, so that inner ring rotation is not affected, so that bearing has very strong sealing performance, improves dustproof effect.

[0004] The above scheme can shield between inner and outer rings of bearing by sealing cover to improve the sealing effect of bearing, but in the scheme, the sealing cover of both sides of bearing is fixed on the two side end faces of outer ring by several bolts, the number of bolt used is large, and assembly is time-consuming, and for thin-walled bearing with thin thickness of outer ring, a large number of thread holes are provided on the two side end faces of outer ring, which can seriously affect the strength of bearing outer ring, and needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of bearing with sealing structure to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a bearing with sealing structure, including bearing inner ring and bearing outer ring, is provided with retainer between bearing inner ring and bearing outer ring, the plurality of ball pockets that is in circle distribution is provided on the retainer, is provided with ball in the ball pocket, is provided with the plurality of first perforation through on the retainer, the two sides of retainer are provided with first sealing ring and second sealing ring respectively, the two end faces of bearing inner ring and bearing outer ring all are provided with annular step stage towards the one side of retainer, the end face of first sealing ring and second sealing ring towards the retainer is in circle distribution with the plurality of internal thread pipe of setting up, internal thread pipe is located in the corresponding first perforation, a plurality of screws are worn through step hole on first sealing ring, and the screw is connected with the corresponding internal thread pipe cooperation.

[0008] As a further scheme of the utility model: the annular step stage is provided with annular slot on each platform, the first sealing ring is integrally formed with a plurality of annular convex strips, and the annular convex strip is located in the corresponding annular slot.

[0009] As a further scheme of the utility model: the bearing inner ring and the bearing outer ring are further provided with a press ring, the press ring is provided with a pressing block at the end towards the retainer and corresponding to each ball pocket, and the pressing block is located in the opening of the corresponding ball pocket.

[0010] As a further scheme of the utility model: the outer wall of the press ring is provided with a second perforation corresponding to each first perforation, and the screw passes through the corresponding second perforation.

[0011] As a further scheme of the utility model: the outer wall of the press ring is provided with a second perforation corresponding to each first perforation, and the screw passes through the corresponding second perforation.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] In the utility model, the annular step stage on the two side end faces of the bearing inner ring and the bearing outer ring forms a labyrinth seal between the mating surfaces of the first sealing ring and the second sealing ring, which seals the bearing inner ring and the bearing outer ring, reduces the dust and impurities entering the inside of the bearing, and improves the service life of the bearing. The first sealing ring and the second sealing ring are clamped on the two sides of the retainer through the cooperation of the internal thread pipe and the screw, which effectively improves the assembly efficiency. Since no threaded hole is opened on the bearing outer ring, the structural strength of the bearing outer ring is guaranteed, and the use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of a bearing with sealing structure.

[0015] Figure 2 is an exploded view of a bearing with a sealing structure.

[0016] Figure 3 is a sectional view of a bearing with a sealing structure.

[0017] Figure 4 is Figure 3 is an enlarged view of A in the middle.

[0018] Wherein, bearing inner ring 1, bearing outer ring 2, annular groove 3, ball 4, retainer 5, ball pocket 6, first perforation 7, pressure ring 8, pressing block 9, second perforation 10, annular stepped platform 11, first sealing ring 12, second sealing ring 13, annular convex strip 14, annular slot 15, internally threaded tube 16, screw 17, embedded slot 18. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly understood, the utility model will be further described in detail in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation in the specification, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0022] In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0023] Please refer to Figures 1-4The utility model discloses an embodiment of a bearing with sealing structure, which comprises a bearing inner ring 1 and a bearing outer ring 2, a retainer 5 is arranged between the bearing inner ring 1 and the bearing outer ring 2, a plurality of ball pockets 6 are arranged in a circumferential distribution on the retainer 5, a plurality of balls 4 are arranged in the ball pockets 6, a plurality of first perforations 7 are arranged through the retainer 5, a first sealing ring 12 and a second sealing ring 13 are arranged on both sides of the retainer 5, annular stepped platforms 11 are arranged on both sides of the retainer 5, the first sealing ring 12 and the second sealing ring 13 are adapted to the annular stepped platforms 11, a plurality of internally threaded pipes 16 are arranged on the end face of the second sealing ring 13, the internally threaded pipes 16 are arranged in the corresponding first perforations 7, a plurality of screws 17 are arranged through stepped holes in the first sealing ring 12, and the screws 17 are connected with the corresponding internally threaded pipes 16.

[0024] The annular stepped platforms 11 on both sides of the bearing inner ring 1 and the bearing outer ring 2 form a labyrinth seal between the mating surfaces of the first sealing ring 11 and the second sealing ring 12, so as to seal the bearing inner ring 1 and the bearing outer ring 2, reduce the dust and impurities entering the inside of the bearing, improve the service life of the bearing, and clamp the first sealing ring 11 and the second sealing ring 12 on both sides of the retainer 5 through the cooperation of the internally threaded pipes 16 and the screws 17, so as to effectively improve the assembly efficiency, and the threaded holes are not arranged on the bearing outer ring 2, so as to guarantee the structural strength of the bearing outer ring and improve the use effect.

[0025] Specifically combined Figures 2-4 In an embodiment of the utility model, a plurality of annular stepped platforms 11 are arranged on both sides of the retainer 5, and a plurality of annular stepped platforms 11 are arranged on both sides of the retainer 5.

[0026] Through the cooperation of the annular stepped platforms 11 and the annular stepped platforms 11, the complexity of the labyrinth seal can be further improved, and the sealing effect can be improved.

[0027] Specifically combined Figures 2-4 In an embodiment of the utility model, a plurality of annular stepped platforms 11 are arranged on both sides of the retainer 5, and a plurality of annular stepped platforms 11 are arranged on both sides of the retainer 5.

[0028] Through the cooperation of the annular stepped platforms 11 and the annular stepped platforms 11, the complexity of the labyrinth seal can be further improved, and the sealing effect can be improved.

[0029] In particular Figures 2-4 Further, on the basis of the previous embodiment, the outer wall of the press ring 8 is provided with a second through hole 10 at the position corresponding to each first through hole 7, and the screw 17 is inserted through the corresponding second through hole 10.

[0030] In particular Figure 2 And Figure 4 In an embodiment of the present application, the outer peripheral wall of the inner ring 1 and the inner peripheral wall of the outer ring 2 are both provided with an annular groove 3 adapted to the ball 4.

[0031] In particular Figure 4 In an embodiment of the present application, the first sealing ring 12 and the second sealing ring 13 are both provided with an embedded groove 18, and the inner contour of the embedded groove 18 is adapted to the retainer 5 and the press ring 8.

[0032] In addition, in some preferred embodiments of the present application, the first sealing ring 12 and the second sealing ring 13 are both made of polytetrafluoroethylene material, so as to improve the service life of the sealing ring by using the good self-lubricating property and wear resistance of the polytetrafluoroethylene material, and to reduce the resistance from the sealing ring when the inner ring 1 rotates relative to the outer ring 2.

[0033] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing having a seal structure, characterized by: The application relates to a bearing, which comprises a bearing inner ring (1) and a bearing outer ring (2), a retainer (5) is arranged between the bearing inner ring (1) and the bearing outer ring (2), a plurality of ball pockets (6) are arranged in a circumferential distribution on the retainer (5), a plurality of rolling balls (4) are arranged in the ball pockets (6), a plurality of first through holes (7) are arranged through the retainer (5), a first sealing ring (12) and a second sealing ring (13) are arranged on the two sides of the retainer (5), annular stepped platforms (11) are arranged on the two end faces of the bearing inner ring (1) and the bearing outer ring (2) and face the side of the retainer (5), the end faces of the first sealing ring (12) and the second sealing ring (13) face the annular stepped platforms (11), a plurality of internally threaded pipes (16) are arranged in a circumferential distribution on the end face of the second sealing ring (13) and face the retainer (5), the internally threaded pipes (16) are located in the corresponding first through holes (7), a plurality of screws (17) are arranged on the first sealing ring (12) and pass through stepped holes, and the screws (17) are connected with the corresponding internally threaded pipes (16).

2. A bearing with a sealing structure according to claim 1, characterized in that: An annular insertion groove (15) is arranged on each platform of the annular stepped platform (11), a plurality of annular protrusions (14) are integrally formed on the first sealing ring (12), and the annular protrusions (14) are located in the corresponding annular insertion grooves (15).

3. The bearing with a sealing structure according to claim 1, characterized in that: A press ring (8) is further arranged between the bearing inner ring (1) and the bearing outer ring (2), a press block (9) is arranged at the end of the press ring (8) and faces the corresponding ball pocket (6), the press block (9) is located in the opening of the corresponding ball pocket (6), and the bottom surface profile of the press block (9) is matched with the outer diameter of the rolling ball (4).

4. A bearing having a seal structure according to claim 3, characterized in that: Second through holes (10) are arranged through the outer wall of the press ring (8) and the corresponding first through holes (7), and the screws (17) pass through the corresponding second through holes (10).

5. The bearing with a sealing structure according to claim 1, wherein: The outer circumferential wall of the bearing inner ring (1) and the inner circumferential wall of the bearing outer ring (2) are provided with annular grooves (3) matched with the rolling balls (4).

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