CN213393531U - Pod shaft dynamic sealing structure with sand prevention and water prevention functions - Google Patents
Pod shaft dynamic sealing structure with sand prevention and water prevention functions Download PDFInfo
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- CN213393531U CN213393531U CN202022336352.8U CN202022336352U CN213393531U CN 213393531 U CN213393531 U CN 213393531U CN 202022336352 U CN202022336352 U CN 202022336352U CN 213393531 U CN213393531 U CN 213393531U
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Abstract
The utility model discloses a compromise sand control and waterproof nacelle axle dynamic seal structure belongs to nacelle sealing technique field. Comprises a pitching frame and a pitching shaft; forming a mounting groove on the pitching frame; the pitching shaft and the pitching frame are rotatably arranged; the pitching shaft extends into the mounting groove, a bearing is arranged in the mounting groove of the pitching shaft in a matched mode, and the bearing and the pitching frame are assembled; a polytetrafluoroethylene ring is arranged between the pitching frame and the pitching shaft; and a labyrinth sealing part is arranged between the pitching frame and the pitching shaft. The device can reduce the friction when every single move frame is rotatory with the every single move axle with the help of polytetrafluoroethylene's material property through locating the polytetrafluoroethylene ring between every single move frame and the every single move axle when nacelle every single move axle is designed, can be dustproof with the help of labyrinth seal portion simultaneously to can add grease waterproofly with the help of polytetrafluoroethylene ring, the dynamic seal design of nacelle axle has been solved to the low cost, overall structure is compact moreover, and required size space is little, and the friction is little, guarantees the nacelle performance.
Description
Technical Field
The utility model relates to a nacelle seals technical field, concretely relates to compromise sand control and waterproof nacelle axle dynamic seal structure.
Background
The pod is a precise device for searching, identifying and tracking a target, and can be mounted on an unmanned aerial vehicle to be used as a necessary means for weapon guidance. The nacelle is required to be adaptable to a complicated use environment without being affected by temperature changes and air humidity, and thus, sealing performance of the nacelle is ensured.
The current difficulty lies in the dynamic seal design of a pod shaft system, and the dynamic seal structure design in the prior art comprises a Glare ring, a vehicle type seal and the like. These sealing forms have large structural size, and cannot be designed and installed due to the limited structural space of the nacelle, and the friction of the sealing forms is large, which affects the control precision of the nacelle and further causes the difficulty in use.
In view of the above-mentioned prior art, the applicant of the present invention has made a lot of repeated and beneficial researches, and the final product has obtained effective results and formed the technical solutions to be described below.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a compromise sand control and waterproof nacelle axle dynamic seal structure to it is big to the dynamic seal design structure size of nacelle shafting among the solution prior art, can not be applicable to compact space and friction great, influences the control accuracy's of nacelle problem easily. The design and installation can be carried out in a compact space, the sealing performance of the nacelle is guaranteed, and meanwhile, the friction is extremely low.
In order to achieve the above object, the present invention provides the following technical solutions:
a compromise sand control and waterproof nacelle shaft moves seal structure includes:
a pitch frame; forming a mounting groove in the pitching frame; and
a pitch axis; the pitching shaft and the pitching frame are rotatably arranged; the pitching shaft extends into the mounting groove, a bearing is arranged in the mounting groove and is assembled with the inner wall of the mounting groove corresponding to the pitching frame; at least one polytetrafluoroethylene ring is stably arranged between the pitching frame and the pitching shaft; and a labyrinth seal part is arranged between the pitching frame and the pitching shaft on the side of the polytetrafluoroethylene ring away from the bearing.
On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:
furthermore, at least one annular groove is formed in the mounting surface of the pitching frame corresponding to the pitching shaft; at least one polytetrafluoroethylene ring is stably arranged in the annular groove in a one-to-one correspondence manner;
and filling bearing lubricating grease which coats the polytetrafluoroethylene ring into the groove.
Furthermore, a bearing gland corresponding to the bearing is arranged on a notch of the mounting groove corresponding to the pitching frame, and the bearing gland can limit the bearing in the mounting groove.
The utility model has the advantages of as follows:
the device can be designed on a pod pitching shaft system, when the pitching frame and the pitching shaft are installed, friction generated when the pitching frame and the pitching shaft rotate relatively is remarkably reduced by virtue of the material properties of wear resistance and self-lubrication of polytetrafluoroethylene through the polytetrafluoroethylene ring arranged between the pitching frame and the pitching shaft, and meanwhile, a labyrinth sealing part is arranged between the pitching frame and the pitching shaft, so that dust prevention by virtue of the labyrinth sealing part is realized, oil and grease can be added and water prevention by virtue of the polytetrafluoroethylene ring, the dynamic sealing design of the pod shaft system is solved at low cost, the overall structure is compact, and the required size space is small; the friction between the pitching frame and the pitching shaft is small, and the performance of the nacelle is ensured.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and the structures, proportions, sizes, etc. shown in the present specification are only used to match the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and any modifications of the structures, changes of the proportion relations, or adjustments of the sizes, should still fall within the scope of the technical contents disclosed in the present invention without affecting the functions and the achievable objects of the present invention.
Fig. 1 is a schematic cross-sectional view of the overall structure provided by the embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the device comprises a pitching frame 1, a groove 11, a pitching shaft 2, a bearing gland 3, a bearing 4, a polytetrafluoroethylene ring 5 and a labyrinth seal part 6.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a pod shaft dynamic seal structure with sand prevention and water prevention, which includes a pitching frame 1, a pitching shaft 2, a bearing gland 3, a bearing 4, a polytetrafluoroethylene ring 5 and a labyrinth seal portion 6; the nacelle pitching shaft system is designed, when the pitching frame 1 and the pitching shaft 2 are installed, friction generated when the pitching frame 1 and the pitching shaft 2 rotate relatively is remarkably reduced by the polytetrafluoroethylene ring 5 arranged between the pitching frame 1 and the pitching shaft 2 and by virtue of the material properties of abrasion resistance and self-lubrication of the polytetrafluoroethylene, and meanwhile, the labyrinth sealing part 6 is arranged between the pitching frame 1 and the pitching shaft 2, so that dust prevention by the labyrinth sealing part 6 is realized, grease can be added and water can be prevented by the polytetrafluoroethylene ring 5, the dynamic sealing design of the nacelle shaft system is solved at low cost, the whole structure is compact, and the required size space is small; the friction between the pitching frame 1 and the pitching shaft 2 is small, and the performance of the nacelle is ensured. The specific settings are as follows:
the pitching frame 1 and the pitching shaft 2 are arranged in a rotating way; and every single move frame 1 forms a mounting groove, every single move axle 2 extends to in the mounting groove, every single move axle 2 is lieing in the mounting groove is built-in to be equipped with a bearing 4, bearing 4 with the mounting groove inner wall that every single move frame 1 corresponds sets up. The mounting groove notch corresponding to the pitching frame 1 is also provided with a bearing gland 3 corresponding to the bearing 4, and the bearing gland 3 is used for limiting the bearing 4 in the mounting groove to a certain extent.
In order to ensure the sealing performance after installation between the pitching frame 1 and the pitching shaft 2, at least one annular groove 11 is further formed in the installation surface, corresponding to the pitching shaft 2, of the pitching frame 1; the annular groove 11 is internally and stably provided with a polytetrafluoroethylene ring 5, the groove 11 is filled with bearing lubricating grease, and the polytetrafluoroethylene ring 5 is used for keeping the structural sealing performance, so that friction generated during relative rotation between the pitching frame 1 and the pitching shaft 2 is extremely small by means of the characteristics of wear resistance and self-lubrication of polytetrafluoroethylene, and meanwhile, the polytetrafluoroethylene ring 5 can be utilized to combine with the bearing lubricating grease to realize effective water prevention.
A labyrinth seal part 6 is arranged between the pitch frame 1 and the pitch shaft 2 on the side of the groove 11 away from the bearing 4, so that effective dust prevention is realized through the labyrinth seal part 6, and the performance of the nacelle is ensured.
The above description describes example embodiments of the present invention, but the present invention is not limited to the above embodiments, which are only illustrative and not restrictive. The skilled person can further make various forms without departing from the scope of protection of the core idea and claims of the present invention, and these all fall within the scope of protection of the present invention.
Claims (3)
1. The utility model provides a compromise sand control and waterproof nacelle axle moves seal structure which characterized in that includes:
a pitch frame; forming a mounting groove in the pitching frame; and
a pitch axis; the pitching shaft and the pitching frame are rotatably arranged; the pitching shaft extends into the mounting groove, a bearing is arranged in the mounting groove and is assembled with the inner wall of the mounting groove corresponding to the pitching frame; at least one polytetrafluoroethylene ring is stably arranged between the pitching frame and the pitching shaft; and a labyrinth seal part is arranged between the pitching frame and the pitching shaft on the side of the polytetrafluoroethylene ring away from the bearing.
2. The shaft-driven sealing structure of the pod giving consideration to both sand prevention and water prevention as claimed in claim 1, wherein at least one annular groove is formed in the mounting surface of the pitching frame corresponding to the pitching shaft; at least one polytetrafluoroethylene ring is stably arranged in the annular groove in a one-to-one correspondence manner;
and filling bearing lubricating grease which coats the polytetrafluoroethylene ring into the groove.
3. The axial-motion sealing structure of the pod with sand control and water prevention functions as claimed in claim 1, wherein a bearing gland corresponding to the bearing is arranged in a notch of the mounting groove corresponding to the pitching frame, and the bearing gland can limit the bearing in the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022336352.8U CN213393531U (en) | 2020-10-19 | 2020-10-19 | Pod shaft dynamic sealing structure with sand prevention and water prevention functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022336352.8U CN213393531U (en) | 2020-10-19 | 2020-10-19 | Pod shaft dynamic sealing structure with sand prevention and water prevention functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393531U true CN213393531U (en) | 2021-06-08 |
Family
ID=76189178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022336352.8U Active CN213393531U (en) | 2020-10-19 | 2020-10-19 | Pod shaft dynamic sealing structure with sand prevention and water prevention functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393531U (en) |
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2020
- 2020-10-19 CN CN202022336352.8U patent/CN213393531U/en active Active
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