A sealing structure of a deep groove ball bearing

Abstract

The application provides a sealing structure of a deep groove ball bearing and relates to the field of bearing sealing, which comprises an outer bearing ring; the outer bearing ring and an inner bearing ring are coaxially sleeved, and a ball is arranged in the gap between the outer bearing ring and the inner bearing ring; a left gap sealing ring and a right gap sealing ring are arranged on the left and right sides of the gap between the outer bearing ring and the inner bearing ring; a limiting plug is slidably connected to the right side wall of the right gap sealing ring; a matching groove is formed in the right end of the inner and outer side walls of the retainer; the fixing block of the right gap sealing ring and the limiting steel ball are clamped in the matching groove of the retainer; therefore, the right gap sealing ring is rotationally connected in the right gap between the outer bearing ring and the inner bearing ring, thereby sealing the right gap between the outer bearing ring and the inner bearing ring, improving the dustproof and waterproof effects of the right gap between the outer bearing ring and the inner bearing ring, preventing lubricant leakage, and solving the problems of inconvenience in replacement and decline in sealing effect after the gap between the inner and outer rings is sealed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing sealing, in particular to a sealing structure of a deep groove ball bearing. BACKGROUND

[0002] The deep groove ball bearing is a type of rolling bearing commonly used at present, which is basically composed of an inner ring, an outer ring, a group of steel balls and a retainer. The deep groove ball structure also includes a sealed deep groove ball. A dustproof sealing cover made of a steel plate is punched to form a simple sealing effect between the inner and outer rings. The main purpose is to prevent the leakage of lubricant inside the bearing and the entry of external moisture, dust and foreign matter into the bearing. However, this simple bearing sealing structure has some shortcomings in long-term use.

[0003] Based on the above, the existing sealing structure of the deep groove ball bearing has the following shortcomings:

[0004] 1. The dustproof sealing cover is made by stamping and is clamped in the gap between the inner and outer rings of the bearing. With the rotation of the bearing, the wear between the edge of the dustproof sealing cover and the inner and outer rings of the bearing increases, and the dustproof sealing cover will leak. This causes the bearing to lack lubricating oil, which affects the operation of the bearing.

[0005] 2. The dustproof sealing cover is usually fixed by clamping. The dustproof sealing cover is a one-time use product, which makes it difficult to disassemble and replace the dustproof sealing cover, causing the problem of difficult replacement. SUMMARY

[0006] Therefore, the present application provides a sealing structure of a deep groove ball bearing. A matching groove is symmetrically formed at the right end of the inner and outer side walls of the retainer. A fixing protrusion and a limiting steel ball of the right gap sealing ring are clamped in the matching groove of the retainer, improving the convenience and firmness of the installation of the right gap sealing ring. Therefore, the right gap sealing ring is rotatably connected in the right gap between the outer bearing ring and the inner bearing ring, thereby sealing the right gap between the outer bearing ring and the inner bearing ring, improving the dustproof and waterproof effect of the right gap between the outer bearing ring and the inner bearing ring, and preventing the leakage of lubricant.

[0007] The present application provides a sealing structure of a deep groove ball bearing, which specifically comprises: an outer bearing ring; the outer bearing ring and an inner bearing ring are coaxially sleeved, and a gap between the outer bearing ring and the inner bearing ring is provided with a ball; the right side of the ball is sleeved with a retainer; left and right gap sealing rings are arranged on the left and right sides of the gap between the outer bearing ring and the inner bearing ring; a rotating fixing frame is rotatably connected to the outer side wall and the inner side wall of the left gap sealing ring; and a limiting plug is slidably connected in the right side wall of the right gap sealing ring.

[0008] Further, annular inner recessed sealing clamping grooves A and B are formed on the left outer walls of the outer bearing ring and the inner bearing ring, arc-shaped grooves are formed in the inner side walls of the outer bearing ring, and arc-shaped grooves are formed in the outer side walls of the inner bearing ring.

[0009] Further, recessed fitting grooves are symmetrically formed at the right ends of the inner and outer side walls of the retainer, and the left end side wall of the retainer is rotationally connected with a ball.

[0010] Further, the upper and lower outer side walls of the right end of the right gap sealing ring are right inclined surfaces, steel ball sliding grooves and fixed protrusions are respectively formed on the upper and lower sides of the left recessed side wall of the right end of the right gap sealing ring, limit steel balls are arranged in the steel ball sliding grooves, the steel ball sliding grooves are in communication with limit sliding cavities in the right side wall of the right gap sealing ring, ten sliding holes are annularly arranged in the right side wall of the limit sliding cavities, and the right gap sealing ring is clamped in the fitting grooves of the outer side wall of the retainer through the fixed protrusions.

[0011] Further, the limit insert block is slidingly connected in the steel ball sliding grooves and the limit sliding cavities formed in the right gap sealing ring, a limit baffle is arranged at the right side of the limit insert block, the transverse sections of the limit insert block and the limit baffle are in the shape of "L", a tension spring is arranged between the left side wall of the limit baffle and the side wall of the limit sliding cavity, ten connecting cylinders are annularly arranged on the right side wall of the limit baffle, and the connecting cylinders are slidingly connected in the sliding holes formed in the right gap sealing ring.

[0012] Further, an outer control sheet is arranged at the right side of the connecting cylinder of the limit insert block, and the outer side wall of the outer control sheet and the right gap sealing ring is a left inclined surface.

[0013] Further, a protrusion is arranged at the middle of the right side wall of the left gap sealing ring and clamped in the gap between the outer bearing ring and the inner bearing ring, two sealing clamping blocks with trapezoidal transverse sections are symmetrically arranged on the right side wall of the left gap sealing ring and clamped in the sealing clamping grooves A and B of the outer bearing ring and the inner bearing ring, T-shaped connecting grooves with "T"-shaped transverse sections are formed in the inner and outer side walls of the left gap sealing ring, an oil injection hole is formed in the left and right side walls of the left gap sealing ring, and a nut is arranged in the oil injection hole.

[0014] Further, two rotation fixing frames are annularly and symmetrically arranged, the two rotation fixing frames are slidingly connected in the T-shaped connecting grooves of the left gap sealing ring through T-shaped connecting blocks, ten fixing sheets are annularly arranged on the opposite side walls of the T-shaped connecting blocks of the rotation fixing frame, and the fixing sheets are connected to the left outer walls of the outer bearing ring and the inner bearing ring through fixing bolts.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. The right gap sealing ring is installed conveniently and firmly by being clamped in the matching recess of the retainer through the matching recess symmetrically opened at the right end of the inner and outer side walls of the retainer and the fixing protrusion and the limiting steel ball of the right gap sealing ring, so that the right gap sealing ring is rotatably connected in the right gap between the outer bearing ring and the inner bearing ring, thereby sealing the right gap between the outer bearing ring and the inner bearing ring, improving the dustproof and waterproof effects of the right gap between the outer bearing ring and the inner bearing ring, and preventing lubricant leakage.

[0017] 2. The lubricating oil leakage is prevented and the dustproof and waterproof effects are provided by clamping the right protrusion of the left gap sealing ring in the gap between the outer bearing ring and the inner bearing ring, the sealing effect is improved when the outer bearing ring and the inner bearing ring rotate, the influence on the rotation of the outer bearing ring and the inner bearing ring is reduced, and the convenience of supplementing lubricating oil in the bearing is improved by the through oil injection hole opened in the left and right side walls of the left gap sealing ring.

[0018] 3. The fixing plates of the two rotating fixing frames are respectively installed on the left side walls of the outer bearing ring and the inner bearing ring through the fixing bolts, the outer bearing ring and the inner bearing ring can independently rotate through the rotating fixing frame slidably connected in the inner and outer side walls of the left gap sealing ring, thereby reducing the influence of the left gap sealing ring on the rotation of the outer bearing ring and the inner bearing ring, reducing the friction between the outer bearing ring and the inner bearing ring while ensuring the sealing effect, and prolonging the service life of the left gap sealing ring.

[0019] 4. The limiting steel ball is clamped in the matching recess of the retainer through the limiting steel ball and the fixing protrusion, the right gap sealing ring is connected to the retainer through the limiting steel ball and the fixing protrusion, the limiting baffle is slid to the right in the limiting sliding cavity by pulling the outer control piece of the limiting plug, the limiting plug is pulled out from the bottom of the limiting steel ball, the limiting of the limiting steel ball is released, the right gap sealing ring is conveniently disassembled and replaced, and the sealing effect of the right gap sealing ring on the bearing is maintained. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0021] The drawings in the following description only relate to some embodiments of the present application, but are not limited to the present application.

[0022] In the drawings:

[0023] Figure 1 is a right side axial structure schematic view of a deep groove ball bearing of the embodiment of the present application.

[0024] Figure 2 is a left-side axial view schematic diagram of a deep groove ball bearing of an embodiment of the present application.

[0025] Figure 3 is a cross-sectional schematic diagram of a deep groove ball bearing of an embodiment of the present application.

[0026] Figure 4 is a right-side axial view schematic diagram of a deep groove ball bearing of an embodiment of the present application. Figure 3 is an enlarged schematic diagram of A of

[0027] Figure 5 is an overall split right-side axial view schematic diagram of a deep groove ball bearing of an embodiment of the present application.

[0028] Figure 6 is an overall split left-side axial view schematic diagram of a deep groove ball bearing of an embodiment of the present application.

[0029] Figure 7 is a split schematic diagram of a retainer, right-gap sealing ring and limit plug of a deep groove ball bearing of an embodiment of the present application.

[0030] Figure 8 is a cross-sectional schematic diagram of a left-gap sealing ring and rotation fixing frame of a deep groove ball bearing of an embodiment of the present application.

[0031] List of reference signs

[0032] 1, outer bearing ring; 101, sealing clamping groove A; 2, inner bearing ring; 201, sealing clamping groove B; 3, ball; 4, retainer; 401, fitting groove; 5, right-gap sealing ring; 501, steel ball sliding groove; 502, limit sliding cavity; 503, fixing protrusion; 504, sliding hole; 6, limit steel ball; 7, limit plug; 701, limit baffle; 702, connecting cylinder; 703, outer control piece; 8, tension spring; 9, left-gap sealing ring; 901, sealing clamping block; 902, T-shaped connecting groove; 903, oil injection hole; 10, rotation fixing frame; 1001, T-shaped connecting block; 1002, fixing piece; 11, fixing bolt. DETAILED DESCRIPTION

[0033] In order to make the purpose, scheme and advantages of the technical solutions of the present application more clear, the technical solutions of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the specific embodiments of the present application. Unless otherwise specified, the terms used herein have the meanings commonly used in the art. The same reference signs in the drawings represent the same components.

[0034] Embodiment: Please refer to Figures 1 to 8 shown:

[0035] The application provides a sealing structure of a deep groove ball bearing, which comprises an outer bearing ring 1; the outer bearing ring 1 and an inner bearing ring 2 are coaxially sleeved, and a gap between the outer bearing ring 1 and the inner bearing ring 2 is provided with a ball 3; a retainer 4 is sleeved on the right side of the ball 3; a concave fitting groove 401 is symmetrically arranged at the right end of the inner and outer side walls of the retainer 4; the ball 3 is rotationally connected to the left end side wall of the retainer 4; a left gap sealing ring 9 and a right gap sealing ring 5 are arranged on the left and right sides of the gap between the outer bearing ring 1 and the inner bearing ring 2; a rotation fixing frame 10 is rotationally connected to the outer side wall and the inner side wall of the left gap sealing ring 9; and a limiting plug 7 is slidingly connected to the right side wall of the right gap sealing ring 5.

[0036] According to the technical scheme, the fitting groove 401 is symmetrically arranged at the right end of the inner and outer side walls of the retainer 4, so that the right gap sealing ring 5 is connected and installed by cooperation of the fixing block 503 and the limiting steel ball 6, the right gap sealing ring 5 is rotationally connected to the right gap between the outer bearing ring 1 and the inner bearing ring 2, the right gap between the outer bearing ring 1 and the inner bearing ring 2 is sealed, the dustproof and waterproof effects of the right gap between the outer bearing ring 1 and the inner bearing ring 2 are improved, and the leakage of lubricant is prevented.

[0037] The left outer wall of the outer bearing ring 1 and the inner bearing ring 2 is provided with annular concave sealing clamping grooves A101 and B201, the inner side wall of the outer bearing ring 1 is provided with an arc-shaped groove, the outer side wall of the inner bearing ring 2 is provided with an arc-shaped groove, the right side wall of the left gap sealing ring 9 is provided with a protruding clamping part in the gap between the outer bearing ring 1 and the inner bearing ring 2, two sealing clamping blocks 901 with trapezoidal cross sections are symmetrically arranged on the right side wall of the left gap sealing ring 9, the sealing clamping blocks 901 are clamped in the sealing clamping grooves A101 and B201 of the outer bearing ring 1 and the inner bearing ring 2, T-shaped connecting grooves 902 with T-shaped cross sections are arranged in the inner and outer side walls of the left gap sealing ring 9, an oil injection hole 903 is arranged in the left and right side walls of the left gap sealing ring 9, and a nut is arranged in the oil injection hole 903.

[0038] According to the technical scheme, the protruding clamping part of the right side wall of the left gap sealing ring 9 is clamped in the gap between the outer bearing ring 1 and the inner bearing ring 2, the leakage of lubricating oil is prevented, and the dustproof and waterproof effects are provided, the sealing clamping blocks 901 of the left gap sealing ring 9 are clamped in the sealing clamping grooves A101 and B201 of the outer bearing ring 1 and the inner bearing ring 2, better sealing effect is provided when the outer bearing ring 1 and the inner bearing ring 2 rotate, the influence on the rotation of the outer bearing ring 1 and the inner bearing ring 2 is reduced, and the oil injection hole 903 arranged in the left and right side walls of the left gap sealing ring 9 improves the convenience of supplementing lubricating oil in the bearing.

[0039] The right end upper and lower outer side walls of the right gap sealing ring 5 are right inclined surfaces, the left end inner concave side wall of the right gap sealing ring 5 is provided with a steel ball sliding groove 501 and a fixed protrusion 503 on the upper and lower sides respectively, the steel ball sliding groove 501 is provided with a limiting steel ball 6, the steel ball sliding groove 501 and a limiting sliding cavity 502 in the right side wall of the right gap sealing ring 5 are communicated, ten sliding holes 504 are arranged in the right side wall of the limiting sliding cavity 502 in a ring array, and the right gap sealing ring 5 is clamped in the matching groove 401 of the outer side wall of the retainer 4 through the fixed protrusion 503.

[0040] The right end upper and lower outer side walls of the right gap sealing ring 5 are right inclined surfaces, the left end inner concave side wall of the right gap sealing ring 5 is provided with a steel ball sliding groove 501 and a fixed protrusion 503 on the upper and lower sides respectively, the steel ball sliding groove 501 is provided with a limiting steel ball 6, the steel ball sliding groove 501 and a limiting sliding cavity 502 in the right side wall of the right gap sealing ring 5 are communicated, ten sliding holes 504 are arranged in the right side wall of the limiting sliding cavity 502 in a ring array, and the right gap sealing ring 5 is clamped in the matching groove 401 of the outer side wall of the retainer 4 through the fixed protrusion 503.

[0041] The right end upper and lower outer side walls of the right gap sealing ring 5 are right inclined surfaces, the left end inner concave side wall of the right gap sealing ring 5 is provided with a steel ball sliding groove 501 and a fixed protrusion 503 on the upper and lower sides respectively, the steel ball sliding groove 501 is provided with a limiting steel ball 6, the steel ball sliding groove 501 and a limiting sliding cavity 502 in the right side wall of the right gap sealing ring 5 are communicated, ten sliding holes 504 are arranged in the right side wall of the limiting sliding cavity 502 in a ring array, and the right gap sealing ring 5 is clamped in the matching groove 401 of the outer side wall of the retainer 4 through the fixed protrusion 503.

[0042] The right end upper and lower outer side walls of the right gap sealing ring 5 are right inclined surfaces, the left end inner concave side wall of the right gap sealing ring 5 is provided with a steel ball sliding groove 501 and a fixed protrusion 503 on the upper and lower sides respectively, the steel ball sliding groove 501 is provided with a limiting steel ball 6, the steel ball sliding groove 501 and a limiting sliding cavity 502 in the right side wall of the right gap sealing ring 5 are communicated, ten sliding holes 504 are arranged in the right side wall of the limiting sliding cavity 502 in a ring array, and the right gap sealing ring 5 is clamped in the matching groove 401 of the outer side wall of the retainer 4 through the fixed protrusion 503.

[0043] Two rotating fixing frames 10 are arranged in a ring shape and symmetrically, the two rotating fixing frames 10 are slidably connected in a T-shaped connecting groove 902 of the left gap sealing ring 9 through a T-shaped connecting block 1001, ten fixing sheets 1002 are arranged in a ring shape on the opposite side walls of the T-shaped connecting block 1001 of the rotating fixing frame 10, and the fixing sheets 1002 are connected on the left side outer walls of the outer bearing ring 1 and the inner bearing ring 2 through fixing bolts 11.

[0044] According to the technical scheme, the fixing sheets 1002 of the two rotating fixing frames 10 are respectively installed on the left side walls of the outer bearing ring 1 and the inner bearing ring 2 through the fixing bolts 11, the rotating fixing frames 10 are slidably connected in the inner and outer side walls of the left gap sealing ring 9, the outer bearing ring 1 and the inner bearing ring 2 can independently rotate, the influence of the left gap sealing ring 9 on the rotation of the outer bearing ring 1 and the inner bearing ring 2 is reduced, the friction between the left gap sealing ring 9 and the outer bearing ring 1 and the inner bearing ring 2 is reduced while the sealing effect is ensured, and the service life of the left gap sealing ring 9 is improved.

[0045] The specific use and role of the embodiment are as follows: in the application, the right protrusion of the left gap sealing ring 9 is clamped in the gap between the outer bearing ring 1 and the inner bearing ring 2, so as to prevent lubricating oil leakage and provide dustproof and waterproof effects; the sealing clamping block 901 of the left gap sealing ring 9 is clamped in the sealing clamping groove A101 and the sealing clamping groove B201 of the outer bearing ring 1 and the inner bearing ring 2, so as to improve the sealing effect when the outer bearing ring 1 and the inner bearing ring 2 rotate; the fixing plates 1002 of the two rotating fixing frames 10 are respectively installed on the left side walls of the outer bearing ring 1 and the inner bearing ring 2 through the fixing bolts 11; the rotating fixing frame 10 is connected to the inner and outer side walls of the left gap sealing ring 9 in a sliding manner, so that the outer bearing ring 1 and the inner bearing ring 2 can rotate independently, thereby reducing the influence of the left gap sealing ring 9 on the rotation of the outer bearing ring 1 and the inner bearing ring 2, reducing the friction between the outer bearing ring 1 and the inner bearing ring 2 while ensuring the sealing effect, thereby prolonging the service life of the left gap sealing ring 9; the fitting grooves 401 are symmetrically arranged at the right ends of the inner and outer side walls of the retainer 4, and the right inclined surfaces of the upper and lower outer side walls at the right end of the right gap sealing ring 5 reduce the obstruction of the right gap sealing ring 5 to the rotation of the bearing; the fixing protrusions 503 of the right gap sealing ring 5 are clamped in the fitting grooves 401 of the retainer 4 in cooperation with the limiting steel balls 6, so as to improve the convenience and firmness of the installation of the right gap sealing ring 5; the steel ball sliding groove 501 is communicated with the limiting sliding cavity 502, so that the position of the limiting steel ball 6 can be controlled through the limiting plug 7, thereby improving the convenience of dismounting and mounting the right gap sealing ring 5; therefore, the right gap sealing ring 5 is rotatably connected to the right gap between the outer bearing ring 1 and the inner bearing ring 2, so as to seal the right gap between the outer bearing ring 1 and the inner bearing ring 2, reduce the dustproof and waterproof effects of the right gap between the outer bearing ring 1 and the inner bearing ring 2, and prevent lubricant leakage; the limiting plug 7 is located at the bottom of the limiting steel ball 6 through the tension spring 8, so that the top of the limiting steel ball 6 is clamped in the fitting groove 401 of the retainer 4; the right gap sealing ring 5 is connected to the retainer 4 through the cooperation of the limiting steel ball 6 and the fixing protrusion 503; the limiting baffle 701 is pulled to the right in the limiting sliding cavity 502 through the outer control plate 703 of the limiting plug 7, so that the limiting plug 7 is pulled out from the bottom of the limiting steel ball 6, thereby releasing the limiting of the limiting steel ball 6 and facilitating the dismounting and replacing of the right gap sealing ring 5, so as to maintain the sealing effect of the right gap sealing ring 5 on the bearing.

[0046] The above merely illustrates the exemplary embodiments of the application, but is not used to limit the protection scope of the application, and the protection scope of the application is determined by the appended claims.

Claims

1. A seal structure for a deep groove ball bearing, characterized by: The utility model relates to a bearing, including outer bearing ring (1), the outer bearing ring (1) and inner bearing ring (2) coaxially suit, be provided with ball (3) in the gap between outer bearing ring (1) and inner bearing ring (2), the right side of ball (3) is sleeved and has retainer (4), the gap left and right sides of outer bearing ring (1) and inner bearing ring (2) are provided with left gap sealing ring (9) and right gap sealing ring (5), the outer side wall and the inner side wall of left gap sealing ring (9) all are rotatably connected with rotating fixed frame (10), the right side wall of right gap sealing ring (5) is slidably connected with limit insert block (7), the right end of right gap sealing ring (5) upper and lower outer side wall is right inclined plane, the left end inner concave side wall of right gap sealing ring (5) upper and lower sides are provided with steel ball sliding slot (501) and fixed lug (503) respectively, limit steel ball (6) is arranged in steel ball sliding slot (501), steel ball sliding slot (501) and the limit sliding cavity (502) in the right side wall of right gap sealing ring (5) are communicated, the side wall right side of limit sliding cavity (502) is provided with ten sliding holes (504) in annular array, right gap sealing ring (5) is clamped in the engagement recess (401) of retainer (4) outer side wall through fixed lug (503), limit insert block (7) is slidably connected in the steel ball sliding slot (501) and limit sliding cavity (502) of right gap sealing ring (5) setting, the right side of limit insert block (7) is provided with limit baffle (701), the cross section of limit insert block (7) and limit baffle (701) is "L" shape, the left side wall of limit baffle (701) and the side wall of limit sliding cavity (502) are provided with tension spring (8), the right side wall of limit baffle (701) is provided with ten connecting cylinders (702) in annular array, connecting cylinder (702) is slidably connected in the sliding hole (504) of right gap sealing ring (5) setting, the right side of connecting cylinder (702) of limit insert block (7) is provided with outer control piece (703), the outer side wall of outer control piece (703) and right gap sealing ring (5) is left inclined plane, the right side wall of left gap sealing ring (9) is provided with the protruding clamping in the gap of outer bearing ring (1) and inner bearing ring (2) in the middle, the right side wall of left gap sealing ring (9) is provided with two sealing blocks (901) of cross section trapezoidal symmetry, sealing block (901) is clamped in sealing card slot A (101) and sealing card slot B (201) of outer bearing ring (1) and inner bearing ring (2), the inner and outer side walls of left gap sealing ring (9) are provided with T type connecting groove (902) of cross section "T", the left and right side walls of left gap sealing ring (9) are provided with one through oil hole (903), the oil hole (903) is provided with screw cap, rotating fixed frame (10) is provided with two in annular symmetry, two rotating fixed frames (10) are slidably connected in the T type connecting groove (902) of left gap sealing ring (9) through T type connecting block (1001), the opposite side wall of T type connecting block (1001) of rotating fixed frame (10) is provided with ten fixed blades (1002) in annular array,The fixed sheet (1002) is connected on the left outer wall of the outer bearing ring (1) and the inner bearing ring (2) through the fixing bolt (11).

2. The seal structure of a deep groove ball bearing according to claim 1, wherein: The left outer wall of the outer bearing ring (1) and the inner bearing ring (2) is provided with annular concave sealing clamping groove A (101) and sealing clamping groove B (201), the inner side wall of the outer bearing ring (1) is provided with an arc-shaped groove, and the outer side wall of the inner bearing ring (2) is provided with an arc-shaped groove.

3. The seal structure for a deep groove ball bearing according to claim 1, wherein: The right end of the inner and outer side walls of the retainer (4) is symmetrically provided with a concave fitting groove (401), and the left end side wall of the retainer (4) is rotatably connected with a ball (3).

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