CN215172121U - Sealing end cover for via hole shaft - Google Patents
Sealing end cover for via hole shaft Download PDFInfo
- Publication number
- CN215172121U CN215172121U CN202120857797.2U CN202120857797U CN215172121U CN 215172121 U CN215172121 U CN 215172121U CN 202120857797 U CN202120857797 U CN 202120857797U CN 215172121 U CN215172121 U CN 215172121U
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- shaft
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Abstract
The utility model discloses a sealing end cover for a via hole shaft, which comprises a cover body and a flange plate, wherein one end of the cover body is provided with the flange plate extending towards the direction far away from the center of the cover body; the oil seal structure is characterized in that the cover body is provided with a coaxial shaft hole and an oil seal seat hole, the shaft hole is communicated with the oil seal seat hole and penetrates through the cover body, an oil supply hole communicated with the shaft hole is formed in the cover body outside the shaft hole, a pressure relief hole is further formed in the cover body outside the shaft hole, one end of the pressure relief hole is communicated with the oil seal seat hole, and the other end of the pressure relief hole penetrates through the cover body and extends towards the inside of the transmission box body. The utility model has the advantages of, through being equipped with the pressure release hole on the lid, the fluid that the fuel feeding passageway of hole axle leaked between expanding ring and the oil blanket can be followed the pressure release hole and flow back to transmission box inside in the rotary seal working process to prevent that pressure is too big and the oil blanket inflation phenomenon appears and take place, improved the sealed effect of oil blanket.
Description
Technical Field
The utility model relates to a shaft seal technical field specifically is a sealing end cap that via hole axle was used.
Background
Gear shaft type mechanical transmission systems are widely applied in various industry fields. In a gear shaft mechanical transmission system, transmission elements mainly comprise gears and shaft parts, and the transmission elements, supporting elements such as a transmission box body and a bearing, and other elements such as a sealing element and a fastening element form the transmission system together. For a gear shaft transmission system, at least one power input shaft is needed to input power to the system from the outside of the system, at least one power output shaft is needed to output power from the outside of the system, and due to the need of connecting with the outside, the shaft ends of the input shaft and the output shaft must extend out of a system box body, and the shafts extending out of the box body are collectively called through-hole shafts.
In order to ensure the normal operation of the transmission system, a proper amount of lubricating oil needs to be injected into the transmission case to lubricate and cool various elements forming the transmission system. In order to prevent the lubricating oil in the box from flowing out of the box, an oil seal needs to be arranged between the shaft and the box. Use the oil blanket among present all kinds of tooth axle class mechanical transmission system, for preventing that lubricating oil from flowing the leak protection oil seal means of universal adoption between transmission shaft and the transmission box, but the oil supply passageway of cross the hole axle can not avoid having fluid to reveal between bloated circle and the oil blanket in rotary seal working process, if leak for a long time can make the fluid pressure increase, cause the oil blanket inflation, its oil blanket effect is not good.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in how to improve the sealed effect of oil blanket.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides a seal end cover that via hole axle was used, includes lid and ring flange, the one end of lid is equipped with the ring flange that extends to keeping away from lid central direction.
The oil seal structure is characterized in that the cover body is provided with a coaxial shaft hole and an oil seal seat hole, the shaft hole is communicated with the oil seal seat hole and penetrates through the cover body, an oil supply hole communicated with the shaft hole is formed in the cover body outside the shaft hole, a pressure relief hole is further formed in the cover body outside the shaft hole, one end of the pressure relief hole is communicated with the oil seal seat hole, and the other end of the pressure relief hole penetrates through the cover body and extends towards the inside of the transmission box body.
Through being equipped with the pressure release hole on the lid, the fluid that leaks between oil feed channel of cross hole axle expanded ring and the oil blanket can flow back to transmission box inside from the pressure release hole in rotary seal working process to prevent that too big and the oil blanket inflation phenomenon of appearing from taking place, improved the sealed effect of oil blanket.
Preferably, the end part of the cover body close to one end of the flange plate is also provided with a spigot, so that the end cover can be conveniently and axially positioned in the transmission case body.
Preferably, the top cover body of the oil supply hole is further provided with a boss, and the boss is provided with a threaded hole communicated with the oil supply hole.
Preferably, the boss is welded and fixed to the cover body.
Preferably, the diameter of the oil seal seat hole is larger than that of the shaft hole.
Preferably, a central axis of the pressure relief hole is parallel to a central axis of the shaft hole.
Preferably, the cover is a right circular cylinder.
Preferably, the flange plate is provided with at least three bolt holes which are uniformly distributed along the circumferential direction.
Compared with the prior art, the beneficial effects of the utility model are that:
through being equipped with the pressure release hole on the lid, the fluid that leaks between oil feed channel of cross hole axle expanded ring and the oil blanket can flow back to transmission box inside from the pressure release hole in rotary seal working process to prevent that too big and the oil blanket inflation phenomenon of appearing from taking place, improved the sealed effect of oil blanket.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention;
figure 2 is a cross-sectional view of an embodiment of the invention;
figure 3 is another cross-sectional view of an embodiment of the invention;
fig. 4 is a schematic view of an installation structure of an embodiment of the present invention.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings attached to the specification.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 4, the embodiment discloses a sealing end cover for a via shaft, which includes a cover body 1 and a flange plate 2, wherein the cover body 1 is a straight cylinder, the flange plate 2 extending in a direction away from the center of the cover body 1 is arranged at one end of the cover body 1, and the flange plate 2 is used for connecting a transmission box body 3.
Be equipped with coaxial shaft hole 11 and oil blanket seat hole 12 on the lid 1, hole axle 4 runs through shaft hole 11 and oil blanket seat hole 12 in proper order and stretches out lid 1, and 4 covers of oil blanket are established on the hole axle 4 on shaft hole 11, shaft hole 11 and oil blanket seat hole 12 are linked together and run through lid 1, be equipped with the oil feed hole 13 with shaft hole 11 intercommunication on the lid 1 in the shaft hole 11 outside, still be equipped with pressure release hole 14 on the lid 1 in the shaft hole 11 outside, 14 one end in pressure release hole and oil blanket seat hole 12 intercommunication, the other end runs through lid 1 and extends to transmission box 3 is inside.
Through being equipped with pressure release hole 14 on lid 1, the fluid that leaks between oil feed channel of via hole axle 4 bloated circle and oil blanket 5 in the rotary seal working process can flow back to transmission case 3 inside from pressure release hole 14 to prevent that pressure is too big and the oil blanket inflation phenomenon appears takes place, has improved the sealed effect of oil blanket 5.
The end part of the cover body 1 close to one end of the flange plate 2 is also provided with a spigot 15, so that the end cover can be conveniently axially positioned on the transmission box body 3, the flange plate 2 is provided with at least three bolt holes 21 which are uniformly distributed along the circumferential direction, radial positioning is realized by penetrating the bolt holes 21 through bolts, and the cover body 1 is fixed on the transmission box body 3 through locking bolts.
Further, still welded fastening has boss 16 on the lid 1 at the top of fuel feeding hole 13, be equipped with the screw hole 161 with fuel feeding hole 13 intercommunication on the boss 16, to injecting fluid into screw hole 161 and getting into in the cross-hole axle 4 through fuel feeding hole 13, then through bolt and screw hole 161 sealed locking tight fit, realize fuel feeding hole 13's sealed.
Still further, the diameter of the oil seal seat hole 12 is larger than that of the shaft hole 11, and the central axis of the pressure relief hole 14 is parallel to the central axis of the shaft hole 11 or inclined to the central axis of the shaft hole 11.
The working principle of the utility model is as follows: before the transmission system works, oil is injected into the threaded hole 161 firstly and enters the through-hole shaft 4 through the oil supply hole 13, and then the oil supply hole 13 is sealed and locked with the threaded hole 161 through a bolt, so that the sealing of the oil supply hole 13 is realized. When transmission system during operation, the through-hole axle 4 can rotate on transmission case 3 and this sealed end cover, and long-time operation, fluid can leak between bloated circle and the oil blanket 5, flows back to transmission case 3 inside from pressure release hole 14 at last to prevent that pressure is too big and the oil blanket inflation phenomenon takes place, improved the sealed effect of oil blanket 5.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The above embodiments only show the embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a seal end cover that via hole axle was used which characterized in that: the flange plate extending to the direction far away from the center of the cover body is arranged at one end of the cover body;
the oil seal structure is characterized in that the cover body is provided with a coaxial shaft hole and an oil seal seat hole, the shaft hole is communicated with the oil seal seat hole and penetrates through the cover body, an oil supply hole communicated with the shaft hole is formed in the cover body outside the shaft hole, a pressure relief hole is further formed in the cover body outside the shaft hole, one end of the pressure relief hole is communicated with the oil seal seat hole, and the other end of the pressure relief hole penetrates through the cover body and extends towards the inside of the transmission box body.
2. The end seal for a via shaft of claim 1, wherein: the end part of the cover body close to one end of the flange plate is also provided with a spigot.
3. The end seal for a via shaft of claim 1, wherein: the oil supply hole top cover body is further provided with a boss, and the boss is provided with a threaded hole communicated with the oil supply hole.
4. The end seal for a via shaft of claim 3, wherein: the boss is welded and fixed on the cover body.
5. The end seal for a via shaft of claim 1, wherein: the diameter of the oil seal seat hole is larger than that of the shaft hole.
6. The end seal for a via shaft of claim 5, wherein: and the central shaft of the pressure relief hole is parallel to the central shaft of the shaft hole.
7. The end seal for a via shaft of claim 1, wherein: the cover body is a straight cylinder.
8. The end seal for a via shaft of claim 1, wherein: at least three bolt holes which are uniformly distributed along the circumferential direction are formed in the flange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120857797.2U CN215172121U (en) | 2021-04-22 | 2021-04-22 | Sealing end cover for via hole shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120857797.2U CN215172121U (en) | 2021-04-22 | 2021-04-22 | Sealing end cover for via hole shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215172121U true CN215172121U (en) | 2021-12-14 |
Family
ID=79363152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120857797.2U Active CN215172121U (en) | 2021-04-22 | 2021-04-22 | Sealing end cover for via hole shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215172121U (en) |
-
2021
- 2021-04-22 CN CN202120857797.2U patent/CN215172121U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |