CN217784162U - Sealing structure of input shaft of gear box - Google Patents
Sealing structure of input shaft of gear box Download PDFInfo
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- CN217784162U CN217784162U CN202221457499.5U CN202221457499U CN217784162U CN 217784162 U CN217784162 U CN 217784162U CN 202221457499 U CN202221457499 U CN 202221457499U CN 217784162 U CN217784162 U CN 217784162U
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- transparent cover
- input shaft
- oil
- ring
- oil slinger
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a seal structure of gear box input shaft, include: the oil slinger comprises an input shaft, a box body, a first transparent cover, a second transparent cover and an oil slinger; the oil slinger is sleeved on the input shaft, the second transparent cover is sleeved on the outer side of the oil slinger, one end of the second transparent cover is clamped with the box body, the other end of the second transparent cover is clamped with the first transparent cover, the first transparent cover is sleeved on the periphery of the input shaft, at least one annular groove is formed in the first transparent cover, the second transparent cover is provided with a convex ring matched with the annular groove, and a preset gap is reserved between the top of the convex ring and the bottom of the annular groove. According to the sealing structure of the input shaft of the gearbox, the preset gap is formed between the annular groove of the first transparent cover and the convex ring of the second transparent cover to form a non-contact sealing structure, so that on-site water vapor is effectively prevented from entering the interior of the box body of the gearbox, the combination of lubricating oil of a bearing in the box body and water vapor in the air is avoided, and the failure risk of the bearing is reduced; the time for replacing the oil seal is eliminated, and the efficiency of field use is improved.
Description
Technical Field
The utility model relates to a gear box input shaft's sealed technical field, concretely relates to gear box input shaft's seal structure.
Background
Traditional gear box input shaft seals through the oil blanket, and the oil blanket is sealed all is not very ideal in the aspect of leak protection, ageing resistance, and the sealed life of oil blanket is low, needs often to inspect whether the oil blanket has ageing phenomenon, in time changes the oil blanket, greatly influences production efficiency.
SUMMERY OF THE UTILITY MODEL
In view of the above problems in the prior art, the objective is to provide a sealing structure for an input shaft of a gearbox.
The specific technical scheme is as follows:
a sealing structure of an input shaft of a gearbox mainly comprises: the oil slinger comprises an input shaft, a box body, a first transparent cover, a second transparent cover and an oil slinger;
the oil slinger sleeve is established on the input shaft, the second passes through the cover and establishes the oil slinger outside, the second pass through the one end of lid with the box joint, the other end with first pass through the lid joint, first pass through the cover establish the input shaft periphery, first pass through cover be provided with at least one ring channel, the second pass through the lid be provided with ring channel matched with bulge loop channel, the top of bulge loop with leave preset clearance in the bottom of ring channel.
In the above sealing structure for the input shaft of the gearbox, the preset gap is 0.3mm-0.6mm.
In the above sealing structure for the input shaft of the gearbox, there is also a feature that the number of the annular grooves and the protruding rings is two.
In the above-mentioned sealing structure for the input shaft of the gearbox, the second transparent cover includes a first section and a second section which are coaxially connected, the inner ring of the first section is adapted to the outer ring of the oil slinger, the first section has two flange surfaces which are opposite, the convex ring is arranged on one of the flange surfaces, the outer edge of the other flange surface is connected with the second section, the inner diameter of the second section is larger than the outer diameter of the oil slinger, and the outer edge of the second section is connected with the box body.
In the above sealing structure for the input shaft of the gear box, the oil slinger further comprises a cylinder body with openings at two ends, and an annular convex disc is arranged on the periphery of the cylinder body.
The sealing structure of the input shaft of the gearbox is characterized by further comprising a first space ring, a nut, a stop pad and a bearing, wherein the first space ring, the nut, the stop pad and the bearing are located in the box body, the nut is sleeved on the input shaft, one end of the nut abuts against the oil slinger, the other end of the nut abuts against the stop pad, the other end of the stop pad abuts against an inner ring of the bearing, the first space ring is sleeved on the periphery of the nut, two ends of the first space ring abut against one end of the second transparent cover and one end of an outer ring of the bearing respectively, and the other end of the outer ring of the bearing abuts against the box body.
In the above sealing structure for the input shaft of the gear box, the first spacer is further provided with an oil hole.
In the above-described seal structure for an input shaft of a gear box, the oil hole may be formed through the outer peripheral surface and the inner peripheral surface of the first spacer.
The positive effects of the technical scheme are as follows:
the utility model provides a sealing structure of gear box input shaft, the ring channel of first cover and the bulge loop of second cover are provided with the clearance of predetermineeing between, form non-contact seal structure, and this structure has effectually prevented the scene steam to get into the box inside of gear box, has avoided the combination between the lubricating oil of the bearing in the box and the steam in the air, has reduced the inefficacy risk of bearing; the time for replacing the oil seal is eliminated, and the efficiency of field use is improved.
Drawings
Fig. 1 is a schematic structural view of a sealing structure of an input shaft of a gear box provided by the present invention.
In the drawings: 1. an input shaft; 2. a box body; 21. a shaft hole; 3. a first transparent cover; 31. an annular groove; 4. a second transparent cover; 41. a convex ring; 421. a first stage; 422. a second section; 5. an oil slinger; 51. a cylinder body; 52. A convex disc; 6. a fastener; 7. a first space ring; 71. an oil hole; 8. a nut; 9. a stopper pad; 10. a bearing; 11. and a second space ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, the utility model discloses a seal structure of gear box input shaft, this structure includes: the oil slinger comprises an input shaft 1, a box body 2, a first transparent cover 3, a second transparent cover 4 and an oil slinger 5;
An oil slinger 5 is sleeved on the input shaft 1, a second transparent cover 4 is sleeved on the outer side of the oil slinger 5, one end of the second transparent cover 4 is clamped with the box body 2, and the other end of the second transparent cover 4 is clamped with the first transparent cover 3; the first cover 3 that passes through is established in input shaft 1 periphery, and the first cover 3 that passes through is provided with at least one ring channel 31, and the second passes through the lid 4 to be provided with ring channel 31 matched with bulge loop 41, and the top of bulge loop 41 leaves the clearance of predetermineeing with the bottom of ring channel 31.
Alternatively, the first transparent cover 3 is of an annular structure, and the annular groove 31 is arranged on one end face of the first transparent cover 3 facing the second transparent cover 4.
Optionally, the second transparent cover 4 includes a first section 421 and a second section 422 which are coaxially connected, an inner ring of the first section 421 is adapted to an outer ring of the slinger 5, the first section 421 has two flange surfaces which are opposite, the raised ring 41 is arranged on one of the flange surfaces, an outer edge of the other flange surface is connected with the second section 422, an inner diameter of the second section 422 is larger than an outer diameter of the slinger 5, and an outer edge of the second section 422 is connected with the tank 2.
Optionally, the end face of the end of the second segment 422, which is away from the first segment 421, is provided with a step groove, the box body 2 is provided with a shaft hole configured for the input shaft 1, the shaft hole and the outer surface of the box body 2 are provided with a clamping angle, the step groove and the clamping angle are clamped with each other, so that the second transparent cover 4 is clamped with the box body 2, and further, the second segment 422 and the box body 2 are fixedly connected with each other through a fastening piece 6.
The inner diameter of the second section 422 is larger than the outer diameter of the oil slinger 5 to form an oil cavity, and specifically, the flange surface of the first section 421, the inner surface of the second section 422 and the outer surface of the oil slinger 5 enclose to form the oil cavity.
Alternatively, the oil slinger 5 includes a cylinder 51 open at both ends, and an annular flange 52 is provided on the outer periphery of the cylinder 51. Wherein the cylinder 51 abuts against the flange surface of the first segment 421. The arrangement of the convex disc 52 can play a role of stirring when the input shaft rotates at a high speed, so that the lubricating oil in the oil cavity can quickly return to the box body 2.
Optionally, the preset gap is 0.3mm-0.6mm, for example, in the present embodiment, the preset gap is 0.5mm.
Alternatively, the number of the annular grooves 31 and the protruding rings 41 may be one, two, or three, for example, in the present embodiment, the number of the annular grooves 31 and the protruding rings 41 is two.
Further, the oil slinger comprises a first space ring 7, a nut 8, a stop pad 9 and a bearing 10, wherein the first space ring 7, the nut 8, the stop pad 9 and the bearing 10 are located in the box body 2, the nut 8 is sleeved on the input shaft 1, one end of the nut abuts against the oil slinger 5, the other end of the nut abuts against the stop pad 9, the other end of the stop pad 9 abuts against an inner ring of the bearing 10, the first space ring 7 is sleeved on the periphery of the nut 8, two ends of the first space ring 7 abut against one ends of outer rings of the second transparent cover 4 and the bearing 10 respectively, and the other end of the outer ring of the bearing 10 abuts against the box body 2. Preferably, a second spacer 11 is further included, the second spacer 11 is disposed between the stop pad 9 and the bearing 10, one end of the second spacer 11 abuts against the stop pad 9, and the other end abuts against an inner ring of the bearing 10. The second spacer 11 is used to separate the stop pad 9 from the bearing 10, and avoid interference of the bracket of the bearing 10 with the stop pad 9 and the nut 8.
The nut 8 abuts against the cylinder 51 of the oil slinger 5.
Wherein the inner diameter of the first spacer 7 is larger than the outer diameter of the nut 8 to form an oil chamber.
Optionally, the first space ring 7 is provided with an oil hole 71. The oil hole 71 is disposed along the radial direction of the first space ring 7, penetrates through the inner circumferential surface and the outer circumferential surface of the first space ring 7, and has one end communicating with an oil passage provided in the case 2 and the other end communicating with the oil chamber, so that the lubricating oil in the oil chamber can flow into the case 2. The lubricating oil in the box body 2 enters the bearing 10 and enters the oil cavity, and then flows back to the box body 2 through the oil hole 71, so that the complete internal circulation of the lubricating oil is realized.
The utility model provides a sealing structure of gear box input shaft, there is the preset clearance between the ring channel 31 of the first transparent cover 3 and the bulge loop 41 of the second transparent cover 4, form the non-contact sealing structure, this structure has prevented the scene steam from entering the box 2 inside of the gear box effectively, has avoided the combination between the lubricating oil of the bearing 10 in the box 2 and the steam in the air, has reduced the inefficacy risk of bearing 10; the time for replacing the oil seal is eliminated, and the efficiency of field use is improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. A seal structure for an input shaft of a gearbox, comprising: the oil slinger comprises an input shaft, a box body, a first transparent cover, a second transparent cover and an oil slinger;
the oil slinger sleeve is arranged on the input shaft, the second transparent cover is arranged on the outer side of the oil slinger, one end of the second transparent cover is connected with the box body in a clamped mode, the other end of the second transparent cover is connected with the first transparent cover in a clamped mode, the first transparent cover is arranged on the periphery of the input shaft, at least one annular groove is formed in the first transparent cover, the second transparent cover is provided with a convex ring matched with the annular groove, and a preset gap is reserved between the top of the convex ring and the bottom of the annular groove.
2. A gearbox input shaft seal arrangement according to claim 1, wherein said predetermined clearance is 0.3mm-0.6mm.
3. A gearbox input shaft sealing structure as defined in claim 1, wherein said annular grooves and said raised rings are two in number.
4. A seal arrangement for a gearbox input shaft according to claim 1, characterised in that the second transparent cover comprises a first section and a second section which are coaxially connected, the inner ring of the first section being adapted to the outer ring of the oil slinger, the first section having two facing away flange faces, the torus being arranged on one of the flange faces, the outer edge of the other flange face being connected to the second section, the inner diameter of the second section being larger than the outer diameter of the oil slinger, the outer edge of the second section being connected to the casing.
5. A gearbox input shaft sealing structure as defined in claim 4, wherein said oil slinger comprises a cylinder body with openings at both ends, and an annular convex disc is arranged on the periphery of the cylinder body.
6. A sealing structure of an input shaft of a gearbox according to any one of claims 1 to 5, further comprising a spacer ring, a nut, a stop pad and a bearing, wherein the spacer ring, the nut, the stop pad and the bearing are located in the box, the nut is sleeved on the input shaft, one end of the nut abuts against the oil slinger, the other end of the nut abuts against the stop pad, the other end of the stop pad abuts against an inner ring of the bearing, the spacer ring is sleeved on the periphery of the nut, two ends of the spacer ring respectively abut against one ends of the second transparent cover and an outer ring of the bearing, and the other end of the outer ring of the bearing abuts against the box.
7. A seal structure of an input shaft of a gearbox according to claim 6, wherein an oil hole is provided on the spacer ring.
8. A seal structure of an input shaft of a gearbox according to claim 7, wherein said oil hole penetrates through an outer peripheral surface and an inner peripheral surface of said spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221457499.5U CN217784162U (en) | 2022-06-08 | 2022-06-08 | Sealing structure of input shaft of gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221457499.5U CN217784162U (en) | 2022-06-08 | 2022-06-08 | Sealing structure of input shaft of gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217784162U true CN217784162U (en) | 2022-11-11 |
Family
ID=83934577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221457499.5U Active CN217784162U (en) | 2022-06-08 | 2022-06-08 | Sealing structure of input shaft of gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217784162U (en) |
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2022
- 2022-06-08 CN CN202221457499.5U patent/CN217784162U/en active Active
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