Bearing sealing device applied to continuous rotating structure

Abstract

The invention discloses a bearing sealing device applied to a continuous rotating structure, and relates to the field of bearing sealing, the bearing sealing device comprises a base, a bearing pressing ring, an oil seal space, a first oil seal, a second oil seal and a limiting sealing assembly, the bearing pressing ring is fixedly arranged on the base, and a bearing is located between the base and the bearing pressing ring; the oil seal space is annularly formed in the bearing pressing ring, the first oil seal is located in the oil seal space and located on the upper portion of the oil seal space, the second oil seal is located in the oil seal space and located on the lower portion of the oil seal space, and the limiting sealing assembly is arranged on the bearing pressing ring and used for limiting the position of the first oil seal. By means of the mode that the first oil seal and the second oil seal are combined, the long-acting sealing performance of the sealing device is effectively improved, oil can be injected into the oil seal space, lubricating oil can be continuously supplemented to the first oil seal and the second oil seal, the service life of the sealing device is effectively prolonged, and the service life of the sealing device is prolonged. And the service life of the continuous rotating structure is further prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing seals, and more particularly to a bearing seal device applied to a continuous rotating structure. Background Art

[0002] Continuous rotation structures are used in many devices to achieve corresponding continuous rotation functions. All continuous rotation structures require bearings to achieve continuous rotation.

[0003] In conventional bearing structures, lubricating oil is required to ensure the effectiveness of rotation and provide protection for the bearings. Rotating structures require the use of rotating sealing devices to provide protection for the shaft system. Current bearing sealing devices cannot achieve long-term sealing when continuously rotating structures are located outdoors and run for a long time.

[0004] In summary, how to perform long-term sealing on bearings in a continuously rotating structure is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a bearing sealing device applied to a continuously rotating structure, which effectively realizes long-term sealing of the bearing in the continuously rotating structure.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A bearing sealing device applied to a continuously rotating structure, comprising:

[0008] A base and a bearing pressure ring, wherein the bearing pressure ring is fixedly arranged on the base, and the bearing is located between the base and the bearing pressure ring;

[0009] An oil seal space, the oil seal space is annularly opened in the bearing pressure ring;

[0010] a first oil seal, the first oil seal being located in the oil seal space and at an upper portion of the oil seal space;

[0011] a second oil seal, the second oil seal being located in the oil seal space and at a lower portion of the oil seal space;

[0012] A position limiting seal assembly is arranged on the bearing pressure ring and is used to limit the position of the first oil seal.

[0013] Preferably, the first oil seal comprises a first frame and a first sealing rubber wrapped on the first frame, the first frame is an L-shaped frame, an end face is arranged on the first sealing rubber at a side of the short side of the first frame away from the long side, and the end face is arranged close to the limit sealing assembly;

[0014] The first sealing rubber is located on the side of the short side of the first skeleton away from the long side and is provided with a dust lip and a first sealing lip in sequence. The dust lip and the first sealing lip are both in contact with the inner wall of the oil seal space. The dust lip is arranged close to the end face, and the first sealing lip is arranged away from the end face.

[0015] Preferably, an annular spring groove is formed on a side of the first sealing lip close to the first frame, and the spring groove is used to arrange a fastening spring.

[0016] Preferably, a shaft sleeve is provided on the inner wall of the oil seal space on a side close to the dust lip, and a friction reducing structure is provided between the shaft sleeve and the dust lip.

[0017] Preferably, the friction reducing structure comprises a groove formed on the shaft sleeve, and an end of the dust lip away from the first frame is placed in the groove.

[0018] Preferably, a cover plate is provided on the bearing pressure ring above the shaft sleeve so as to fix the shaft sleeve in the bearing pressure ring.

[0019] Preferably, the second oil seal includes a second frame and a second sealing rubber coated on the second frame, a second sealing lip is provided on one side of the second sealing rubber, and the second sealing lip abuts against the inner wall of the oil seal space.

[0020] Preferably, a plurality of oil injection holes are opened in the circumference of the bearing pressure ring, and the oil injection holes are connected to the oil seal space. A closing bolt is threadedly connected to the inside of each of the oil injection holes, and one end of the closing bolt is located inside the oil seal space and is located between the first oil seal and the second oil seal to separate the first oil seal from the second oil seal.

[0021] Preferably, one end of the closing bolt located inside the oil seal space is a non-threaded straight rod structure.

[0022] Preferably, the limiting seal assembly comprises an oil seal limiting ring arranged on the bearing pressure ring, and the oil seal limiting ring is fixedly arranged above the first oil seal so that the first oil seal is limited in the oil seal space.

[0023] The bearing sealing device for a continuously rotating structure provided by the present invention comprises a base, a bearing pressure ring, an oil seal space, a first oil seal, a second oil seal and a position limiting sealing assembly, wherein the bearing pressure ring is fixedly arranged on the base, and the bearing is located between the base and the bearing pressure ring, the oil seal space is annularly opened in the bearing pressure ring, the first oil seal is located in the oil seal space and is located at the upper part of the oil seal space, the second oil seal is located in the oil seal space and is located at the lower part of the oil seal space, and the position limiting sealing assembly is arranged on the bearing pressure ring for limiting the position of the first oil seal.

[0024] The bearing sealing device for a continuously rotating structure provided by the present invention effectively improves the long-term sealing performance of the sealing device by means of a combination of a first oil seal and a second oil seal, and can inject oil into the oil seal space to continuously replenish lubricating oil to the first oil seal and the second oil seal, thereby effectively improving the service life of the sealing device and further improving the operating life of the continuously rotating structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a bearing sealing device of a continuous rotating structure in this embodiment;

[0027] Figure 2 Schematic diagram of the layout of the first oil seal and the second oil seal in the oil seal space in this embodiment.

[0028] Figure 1-Figure 2 , the reference numerals include:

[0029] 1. Base; 101. Bearing inner ring locating ring;

[0030] 2. Bearing pressure ring; 201. Bearing inner ring pressure ring; 202. Bearing outer ring pressure ring;

[0031] 3. Bearing; 4. Oil seal space;

[0032] 5. first oil seal; 51. first frame; 52. first sealing rubber; 53. dust lip; 54. first sealing lip; 55. end face; 56. spring groove;

[0033] 6. second oil seal; 61. second frame; 62. second sealing rubber; 63. second sealing lip;

[0034] 7. Limit seal assembly; 71. Oil seal limit ring;

[0035] 8. Bushing;

[0036] 9. Friction reduction structure; 91. Groove;

[0037] 10. Oil filling hole; 11. Closing bolt; 12. Cover plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Unless otherwise defined, the technical terms or scientific terms used in the present application shall have the usual meanings understood by persons with ordinary skills in the field to which the invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly. An embodiment of the present application discloses a bearing sealing device applied to a continuously rotating structure.

[0040] The core of the present invention is to provide a bearing sealing device for a continuously rotating structure.

[0041] Please refer to Figure 1 to Figure 2 The bearing sealing device for a continuous rotating structure provided by the present invention comprises a base 1, a bearing pressure ring 2, an oil seal space 4, a first oil seal 5, a second oil seal 6 and a limit seal assembly 7. The bearing pressure ring 2 is fixedly arranged on the base 1, and the bearing 3 is located between the base 1 and the bearing pressure ring 2. The oil seal space 4 is annularly opened in the bearing pressure ring 2. The first oil seal 5 is located in the oil seal space 4 and is located at the upper part of the oil seal space 4. The second oil seal 6 is located in the oil seal space 4 and is located at the lower part of the oil seal space 4. The limit seal assembly is arranged on the bearing pressure ring 2 to limit the position of the first oil seal 5.

[0042] Specifically, a bearing inner ring positioning ring 101 is arranged inside the base 1, and the bearing pressure ring 2 includes a bearing inner ring pressure ring 201 and a bearing outer ring pressure ring 202. The bearing pressure ring 2 is fixedly arranged on the base 1 and the bearing inner ring positioning ring 101 by bolts. An installation groove is formed between the bearing inner ring pressure ring 201, the bearing outer ring pressure ring 202, the base 1 and the bearing inner ring positioning ring 101, and the bearing 3 is installed in the installation groove. The oil seal space 4 is opened between the bearing inner ring pressure ring 201 and the bearing outer ring pressure ring 202, and is located above the bearing 3. By injecting lubricating oil into the oil seal space 4, the friction between the first oil seal 5, the second oil seal 6 and the inner wall of the oil seal space 4 is reduced, and the service life of the first oil seal 5 and the second oil seal 6 is improved.

[0043] The above-mentioned bearing sealing device applied to the continuous rotating structure effectively improves the long-term sealing performance of the sealing device by setting two mutually cooperating first oil seals 5 and second oil seals 6, and can fill oil in the oil seal space 4 to continuously replenish the lubricating oil to the first oil seal 5 and the second oil seal 6, thereby effectively improving the service life of the sealing device and further improving the operating life of the continuously rotating structure.

[0044] The bearing sealing device for a continuously rotating structure provided by the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] In a specific embodiment, reference Figure 1 and Figure 2 The first oil seal 5 includes a first frame 51 and a first sealing rubber 52 wrapped on the first frame 51. The first frame 51 is an L-shaped frame. The first sealing rubber 52 is provided with an end face 55 on the side of the short side of the first frame 51 away from the long side. The end face 55 is arranged close to the limit seal assembly 7. The first sealing rubber 52 is provided with a dust lip 53 and a first sealing lip 54 in sequence on the side of the short side of the first frame 51 away from the long side. The dust lip 53 and the first sealing lip 54 are both in contact with the inner wall of the oil seal space 4. The dust lip 53 is arranged close to the end face 55, and the first sealing lip 54 is arranged away from the end face 55.

[0046] Specifically, the first skeleton 51 is inverted in the oil seal space 4, the end face 55 is located at the top of the oil seal space 4, and the long side of the first skeleton 51 extends downward toward the end face 55 and fits with the outer inner wall of the oil seal space 4. The dust lip 53 and the first sealing lip 54 are located on the same side, and both fit with the inner inner wall of the oil seal space 4 to achieve oil sealing. The dust lip 53 plays a role in dust prevention, and a groove is provided between the dust lip 53 and the end face 55 for collecting dust and impurities. Among them, the first skeleton 51 is used to strengthen and support the first oil seal 5 as a whole, and can keep the shape and tension of the first oil seal 5 as a whole, ensuring that the dust lip 53 and the first sealing lip 54 can fit closely with the inner wall of the oil seal space 4 in real time, further improving the sealing performance of the device.

[0047] Based on any of the above embodiments, Figure 1 and Figure 2 A ring-shaped spring groove 56 is formed on one side of the first sealing lip 54 close to the first frame 51. The spring groove 56 is used to set a fastening spring (not shown in the figure), and the fastening spring is a canted coil spring.

[0048] Specifically, the spring groove 56 is used to install the fastening spring, so that the fastening spring is sleeved on the first oil seal 5. The fastening spring clamps the first sealing lip 54 located outside the spring groove 56 to the inner wall of the oil seal space 4, so that it fits tightly to the inner wall of the oil seal space 4, further improving the sealing performance of the first sealing lip 54.

[0049] Based on any of the above embodiments, Figure 1 and Figure 2 A shaft sleeve 8 is provided on the inner wall of the oil seal space 4 close to the dust lip 53 , and a friction reducing structure 9 is provided between the shaft sleeve 8 and the dust lip 53 .

[0050] Specifically, the sleeve 8 is a friction-reducing sleeve, which effectively reduces the long-term friction loss of the dust lip 53 and the first sealing lip 54 during use, and effectively improves the overall service life of the first oil seal 5. At the same time, the friction-reducing structure 9 can further reduce the long-term friction loss of the dust lip 53 during use.

[0051] Based on any of the above embodiments, Figure 1 and Figure 2 The friction reducing structure 9 includes a groove 91 formed on the shaft sleeve 8 , and one end of the dust lip 53 away from the first frame 51 is placed in the groove 91 .

[0052] Specifically, the cross-section of the groove 91 is triangular, and the end of the dust lip 53 away from the end face 55 is inserted into the groove 91. There is a gap between the dust lip 53 and the groove 91, thereby forming a maze structure, which effectively prevents dust and impurities from entering the rotating surface. At the same time, there is no direct contact and friction between the groove 91 and the tip of the dust lip 53, thereby further improving the service life of the dust lip 53.

[0053] Based on any of the above embodiments, Figure 1 and Figure 2 A cover plate 12 is provided on the bearing pressure ring 2 above the shaft sleeve 8 so that the shaft sleeve 8 is fixed in the bearing pressure ring 2 .

[0054] Specifically, the cover plate 12 is used to fix the shaft sleeve 8 to further improve the stability of the shaft sleeve 8. The cross-sections of the cover plate 12 and the shaft sleeve 8 are T-shaped, and the part of the cover plate 12 that extends beyond the shaft sleeve 8 cooperates with the first oil seal 5 to form a spatial maze, further preventing dust and other external debris from entering the rotating surface, thereby improving the service life of the device.

[0055] It should be noted that the shaft sleeve 8 is preferably a polytetrafluoroethylene shaft sleeve, which can effectively reduce the friction of the contact surface, and in combination with the lubricating oil, can effectively reduce the wear of the oil seal during long-term operation. At the same time, the shaft sleeve 8 only cooperates with the first oil seal 5 to increase the working life of the outer oil seal that is easily affected by external dust, and does not contact the second oil seal 6, avoiding the matching gap between the shaft sleeves 8 across the two oil seal sealing surfaces. In addition, the second oil seal 6 has sufficient grease and is basically not affected by dust, and the conventional contact metal shaft can also maintain long-term working stability.

[0056] Based on any of the above embodiments, Figure 1 and Figure 2 The second oil seal 6 includes a second frame 61 and a second sealing rubber 62 covered on the second frame 61 . A second sealing lip 63 is provided on one side of the second sealing rubber 62 . The second sealing lip 63 abuts against the inner wall of the oil seal space 4 .

[0057] Specifically, the second oil seal 6 is a single-lip structure, wherein the second sealing lip 63 is located on the same side as the first sealing lip 54 and the dust lip 53, further improving the sealing performance of the device. Similar to the first oil seal 5, the second skeleton 61 is used to strengthen and support the second oil seal 6 as a whole, and can keep the shape and tension of the second oil seal 6 as a whole, ensuring that the second sealing lip 63 can be closely attached to the inner wall of the oil seal space 4 in real time, further improving the sealing performance of the device.

[0058] It should be noted that, since the oil seal needs to have the function of continuous grease storage, the first sealing rubber 52 and the second sealing rubber 62 are made of nitrile rubber, which effectively improves the oil resistance of the first oil seal 5 and the second oil seal 6, ensuring that they can work normally under working conditions with lubricating oil and prolonging their service life.

[0059] Based on any of the above embodiments, Figure 1 and Figure 2 A plurality of oil injection holes 10 are provided in the circumferential direction of the bearing pressure ring 2, and the oil injection holes 10 are connected with the oil seal space 4. A closing bolt 11 is threadedly connected to the inside of each oil injection hole 10, and one end of the closing bolt 11 located inside the oil seal space 4 is located between the first oil seal 5 and the second oil seal 6 to separate the first oil seal 5 from the second oil seal 6.

[0060] Specifically, by opening a plurality of oil filling holes 10, continuous lubricating oil replenishment inside the oil seal space 4 can be achieved. By threading the closing bolt 11 with the oil filling hole 10, the closing bolt 11 and the oil filling hole can be detachably matched, and the interior of the oil seal space 4 can be inspected by regularly disassembling the closing bolt 11, and the lubricating oil replenishment operation can be performed in time. This structure realizes the replenishment of lubricating oil and the inspection of the internal space without disassembling the entire device, thereby improving the convenience of operation. In addition, the end of the closing bolt 11 located in the oil seal space 4 can also effectively isolate the first oil seal 5 and the second oil seal 6 in space, ensuring that the first oil seal 5 and the second oil seal 6 do not interfere with each other and can work normally independently of each other.

[0061] Based on any of the above embodiments, Figure 1 and Figure 2 One end of the closing bolt 11 located inside the oil seal space 3 is a non-threaded straight rod structure.

[0062] Specifically, the end of the closing bolt 11 located inside the oil seal space 3 is a non-threaded straight rod structure, which can effectively prevent the end of the closing bolt 11 from damaging the contact surfaces of the first oil seal 5 and the second oil seal 6, thereby further improving the service life of the device.

[0063] Based on any of the above embodiments, Figure 1 and Figure 2 The limiting seal assembly 7 includes an oil seal limiting ring 71 arranged on the bearing pressure ring 2 , and the oil seal limiting ring 71 is fixedly arranged above the first oil seal 5 so that the first oil seal 5 is limited in the oil seal space 4 .

[0064] Specifically, the oil seal limiting ring 71 is used to limit the spatial position of the first oil seal 5, and the oil seal limiting ring 71 is fixedly arranged on the bearing pressure ring 2 by bolts. At the same time, the oil seal limiting ring 71 and the end adjacent to the cover plate 12 are arranged in parallel and staggered, and there is a gap between the two, thereby forming a spatial maze structure, further preventing dust and other foreign debris from entering the rotating surface, and improving the overall service life of the device.

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The above is a detailed introduction to a bearing sealing device for a continuously rotating structure provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A bearing sealing device applied to a continuously rotating structure, characterized in that: include: A base (1) and a bearing pressure ring (2), wherein the bearing pressure ring (2) is fixedly arranged on the base (1), and the bearing (3) is located between the base (1) and the bearing pressure ring (2); An oil seal space (4), the oil seal space (4) being annularly opened inside the bearing pressure ring (2); A first oil seal (5), the first oil seal (5) being located in the oil seal space (4) and at an upper portion of the oil seal space (4); a second oil seal (6), the second oil seal (6) being located in the oil seal space (4) and at a lower part of the oil seal space (4); A position limiting seal component (7), which is arranged on the bearing pressure ring (2) and is used to limit the position of the first oil seal (5).

2. A bearing sealing device for a continuously rotating structure according to claim 1, characterized in that: The first oil seal (5) comprises a first frame (51) and a first sealing rubber (52) wrapped around the first frame (51); the first frame (51) is an L-shaped frame; an end surface (55) is provided on the first sealing rubber (52) at a side of the short side of the first frame (51) away from the long side; the end surface (55) is provided close to the limit seal assembly (7); The first sealing rubber (52) is located on a side of the short side of the first skeleton (51) away from the long side and is provided with a dustproof lip (53) and a first sealing lip (54) in sequence. The dustproof lip (53) and the first sealing lip (54) are both in contact with the inner wall of the oil seal space (4). The dustproof lip (53) is provided close to the end face (55), and the first sealing lip (54) is provided away from the end face (55).

3. A bearing sealing device for a continuously rotating structure according to claim 2, characterized in that: An annular spring groove (56) is provided on a side of the first sealing lip (54) close to the first frame (51), and the spring groove (56) is used to arrange a fastening spring.

4. The bearing sealing device for a continuously rotating structure according to claim 2, characterized in that: A shaft sleeve (8) is provided on the inner wall of the oil seal space (4) on a side close to the dustproof lip (53), and a friction reducing structure (9) is provided between the shaft sleeve (8) and the dustproof lip (53).

5. A bearing sealing device for a continuously rotating structure according to claim 4, characterized in that: The friction reducing structure (9) comprises a groove (91) formed on the shaft sleeve (8), and an end of the dust lip (53) away from the first frame (51) is placed in the groove (91).

6. The bearing sealing device for a continuously rotating structure according to claim 4, characterized in that: A cover plate (12) is provided on the bearing pressure ring (2) above the shaft sleeve (8) so as to fix the shaft sleeve (8) inside the bearing pressure ring (2).

7. The bearing sealing device for a continuously rotating structure according to claim 1, characterized in that: The second oil seal (6) comprises a second frame (61) and a second sealing rubber (62) coated on the second frame (61); a second sealing lip (63) is provided on one side of the second sealing rubber (62); the second sealing lip (63) abuts against an inner wall of the oil seal space (4).

8. A bearing sealing device for a continuously rotating structure according to any one of claims 1 to 7, characterized in that: A plurality of oil injection holes (10) are provided in the circumferential direction of the bearing pressure ring (2), the oil injection holes (10) being connected to the oil seal space (4), each of the oil injection holes (10) being threadedly connected to a closing bolt (11), one end of the closing bolt (11) being located inside the oil seal space (4) being located between the first oil seal (5) and the second oil seal (6), so as to separate the first oil seal (5) from the second oil seal (6).

9. A bearing sealing device for a continuously rotating structure according to claim 8, characterized in that: One end of the closing bolt (11) located inside the oil seal space (3) is a straight rod structure without threads.

10. A bearing sealing device for a continuously rotating structure according to any one of claims 1 to 7, characterized in that: The limiting seal assembly (7) comprises an oil seal limiting ring (71) arranged on the bearing pressure ring (2), and the oil seal limiting ring (71) is fixedly arranged above the first oil seal (5) so that the first oil seal (5) is limited in the oil seal space (4).

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