CN217713566U - Oil seal lubricating structure - Google Patents
Oil seal lubricating structure Download PDFInfo
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- CN217713566U CN217713566U CN202221794827.0U CN202221794827U CN217713566U CN 217713566 U CN217713566 U CN 217713566U CN 202221794827 U CN202221794827 U CN 202221794827U CN 217713566 U CN217713566 U CN 217713566U
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Abstract
The utility model relates to a speed reducer shaft seal technical field, in particular to an oil seal lubricating structure, which comprises a through cover, an oil seal and a pressing plate, wherein the through cover is connected with a rotating shaft in a penetrating way and is fixed on a speed reducer box body, and the oil seal is sleeved on the rotating shaft and is pressed and fixed on the through cover through the pressing plate; the inner wall of the through hole of the transparent cover is provided with a mounting groove, at least two oil seals are arranged in the mounting groove, a limiting ring is arranged between every two adjacent oil seals, and a through hole is formed in the limiting ring along the radial direction of the limiting ring; and a channel is formed in the side wall of the transparent cover in a penetrating way towards the through hole, and lubricating grease is injected between the two adjacent oil seals through the channel and the through hole. On the basis of the original through cover structure, a channel for injecting grease is added, so that new grease can be conveniently added at any time on the premise of not disassembling an oil seal; furthermore, the end part of the transparent cover is provided with a pressing plate which is convenient to detach, so that the abrasion conditions of the oil seal and the rotating shaft can be observed at any time by detaching the pressing plate, and the condition of oil leakage caused by failure of the oil seal can be eliminated.
Description
Technical Field
The utility model relates to a speed reducer bearing seal technical field especially relates to an oil blanket lubricating structure.
Background
For a reduction gearbox device with large load and large heat, an external cooling device is usually matched with a cooling circulation system in the reduction gearbox device to realize heat dissipation and cooling; in normal operation of the reduction gearbox, therefore, there is usually a large amount of lubricating oil stored inside its casing for cooling.
In order to avoid the leakage of lubricating oil in the reduction box body, the leakage of the lubricating oil in the box body is avoided by adopting a means of installing an oil seal on a gland of a box body cross-connected rotating shaft, more than two oil seals are sleeved on the part of the rotating shaft, which is positioned on the gland, and the oil seals are arranged in the gland and are tightly pressed on the rotating shaft by utilizing the elasticity of rubber of the oil seals; the oil blanket is in the friction state with the pivot for a long time, because be close to the sealed of the inside first oil blanket of box, leads to the second oil blanket department to have no lubricating oil basically, and the second oil blanket is damaged generating heat easily at long-term dry friction state, and final loss sealing effect causes the leakage of the inside lubricating oil of reduction box.
The information disclosed in this background section is only for enhancement of understanding of the general background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an oil blanket lubricating structure to the defect that exists among the prior art, avoid outside oil blanket to be in long-term dry friction state and generate heat the damage.
In order to achieve the above purpose, the utility model adopts the technical scheme that: an oil seal lubricating structure comprising: the transmission cover penetrates through the rotating shaft and is fixed on the speed reducer box body, and the oil seal is sleeved on the rotating shaft and is fixedly pressed on the transmission cover through the pressing plate;
an installation groove is formed in the inner wall of the through cover perforation, at least two oil seals are arranged in the installation groove, a limiting ring is arranged between every two adjacent oil seals, and a through hole is formed in the limiting ring along the radial direction of the limiting ring;
and a channel is formed in the side wall of the transparent cover in a penetrating way towards the through hole, and lubricating grease is injected between every two adjacent oil seals through the channel and the through hole.
Furthermore, the mounting groove is arranged along the circumferential direction of the through hole, the end, far away from the box body, of the transparent cover extends along the axial direction of the through hole, and the pressing plate is located at the end, far away from the box body, of the transparent cover.
Furthermore, the diameter size of the through hole and the diameter size of the opening in the pressing plate are slightly larger than the diameter size of the rotating shaft, and the inner ring and the outer ring of the oil seal are respectively in contact with the outer wall of the rotating shaft and the circumferential inner wall of the mounting groove.
Furthermore, the size of the outer ring of the limiting ring is matched with that of the mounting groove, and the diameter of the inner ring of the limiting ring is larger than that of the rotating shaft.
Further, the cross-section of spacing ring sets up to the I shape, includes along its circumference sets up first annular and the second annular in its outer lane and inner circle respectively, the through-hole intercommunication first annular with the second annular.
Furthermore, the through holes are circumferentially provided with a plurality of limiting rings.
Furthermore, a convex ring is arranged on one side, facing the transparent cover, of the pressing plate, and the convex ring is coaxially arranged with the hole of the pressing plate and is matched with the mounting groove.
Further, an oil injection nozzle is arranged at the orifice of the outer wall of the channel.
Further, the pressing plate is fixedly connected with the transparent cover through a bolt, and the transparent cover is fixedly connected with the box body through a bolt.
The beneficial effects of the utility model are that:
according to the oil seal structure, on the basis that the double oil seals are installed in the original through cover structure, the channel for injecting the oil is added, new oil can be conveniently added at any time on the premise that the oil seal is not required to be detached, and the outer side oil seal is prevented from being in a dry friction state for a long time; furthermore, the pressing plate convenient to detach is arranged at the end part of the transparent cover, so that the abrasion conditions of the oil seal and the rotating shaft can be observed at any time by detaching the pressing plate, and the condition of oil leakage caused by failure of the oil seal can be eliminated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a sectional view of the oil seal lubrication structure of the present invention;
fig. 2 is an explosion schematic diagram of the inner oil seal structure of the middle transparent cover of the present invention;
FIG. 3 is a schematic view of the structure of the stop collar of the present invention;
FIG. 4 is a schematic structural view of a stop collar of the present invention;
FIG. 5 is a schematic structural view of a stop collar of the present invention;
FIG. 6 is a cross-sectional view of the stop collar shown in FIG. 5;
fig. 7 is a schematic structural view of the middle convex ring of the present invention.
Reference numerals: 1. a transparent cover; 11. perforating; 12. mounting grooves; 13. a channel; 2. oil sealing; 3. pressing a plate; 31. a convex ring; 4. a rotating shaft; 5. a limiting ring; 51. a through hole; 52. a first ring groove; 53. a second ring groove; 6. an oil injection nozzle; 7. a box body.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 7, the oil seal lubricating structure comprises a transparent cover 1, an oil seal 2 and a pressure plate 3, wherein the transparent cover 1 is connected with a rotating shaft 4 in a penetrating way and fixed on a speed reducer box body 7, and the oil seal 2 is sleeved on the rotating shaft 4 and is fixedly pressed on the transparent cover 1 through the pressure plate 3; the inner wall of a through hole 11 of the transparent cover 1 is provided with a mounting groove 12, at least two oil seals 2 are arranged in the mounting groove 12, a limiting ring 5 is arranged between every two adjacent oil seals 2, and a through hole 51 is arranged on the limiting ring 5 along the radial direction of the limiting ring; a channel 13 is formed on the side wall of the transparent cover 1 through the through hole 11, and lubricating grease is injected between two adjacent oil seals 2 through the channel 13 and the through hole 51.
As shown in fig. 1 and fig. 2, an installation groove 12 for installing the oil seal 2 is formed in an inner wall of a through hole 11 through which the transparent cover 1 penetrates the rotating shaft 4, in this embodiment, the installation groove 12 is arranged along a circumferential direction of the through hole 11 and extends from one end of the transparent cover 1 away from the box body 7 along an axial direction of the through hole 11, and the pressing plate 3 is located at one end of the transparent cover 1 away from the box body 7; the oil seal 2, the limiting ring 5 and the oil seal 2 are sequentially embedded into the mounting groove 12, and then the pressing plate 3 is fixed at the end part of the transparent cover 1, so that the mounting of the oil seal 2 in the transparent cover 1 is completed. In the tradition passes through and covers 1 structure, the observation of the wherein oil blanket 2 lubricating grease consumption condition of being not convenient for, and carry out the operation of fatliquoring to oil blanket 2 and need demolish oil blanket 2, cause the damage to oil blanket 2 easily.
In the application, on the basis of installing the double oil seals 2 in the original structure of the transparent cover 1, the channel 13 for injecting the grease is added, so that new grease can be conveniently added at any time on the premise of not dismounting the oil seals 2, and the outer side oil seal 2 is prevented from being in a dry friction state for a long time; furthermore, be provided with the clamp plate 3 of convenient dismantlement passing through 1 tip of lid, can observe the wearing and tearing condition of oil blanket 2 and pivot 4 at any time through dismantling clamp plate 3, can also get rid of the condition that oil blanket 2 became invalid and lead to the oil leak.
Example 1
In this embodiment, two oil seals 2 are arranged in the mounting groove 12, and a limit ring 5 is arranged between the two oil seals 2, so that the two oil seals 2 can be separated and an injection space for grease can be provided for the second oil seal 2 far away from the box body 7, and a through hole 51 on the limit ring 5 corresponds to a channel 13 opening formed in the transparent cover 1 for installation, so that the grease can be guided to the second oil seal 2 through the through hole 51 on the limit ring 5 after passing through the channel 13.
Furthermore, the diameter of the through hole 11 and the diameter of the hole on the pressure plate 3 are both slightly larger than the diameter of the rotating shaft 4, and the inner ring and the outer ring of the oil seal 2 are respectively contacted with the outer wall of the rotating shaft 4 and the circumferential inner wall of the mounting groove 12. The size of the outer ring of the limiting ring 5 is matched with that of the mounting groove 12, and the diameter of the inner ring of the limiting ring 5 is larger than that of the rotating shaft 4.
When the oil seal 2 is matched with the transparent cover 1 to be sleeved on the rotating shaft 4 and fixedly connected with the box body 7, the rotating shaft 4 is not contacted with the transparent cover 1 and the pressing plate 3 on the transparent cover, so that the rotating shaft 4 is prevented from being damaged; the rotating shaft 4 is rotationally connected with the oil seal 2, and the oil seal 2 is fixedly arranged in the mounting groove 12 of the transparent cover 1 and does not move along with the rotation of the rotating shaft 4; the limiting ring 5 arranged between the two oil seals 2 is ensured to be fixed in the mounting groove 12, so that the through hole 51 on the limiting ring 5 is always in a communication state with the channel 13.
Example 2
As a preferable feature of the above embodiment, in the present embodiment, the structure of the retainer ring 5 is adjusted to ensure that the grease is not affected in any situation in the grease injection mounting groove 12. Specifically, as shown in fig. 4, the limiting ring 5 has an i-shaped cross section, and includes a first ring groove 52 and a second ring groove 53 respectively disposed on the outer ring and the inner ring along the circumferential direction thereof, and the through hole 51 communicates the first ring groove 52 and the second ring groove 53.
In the specific implementation process, the first ring groove 52 is matched with the circumferential side wall of the mounting groove 12 to form a first ring cavity, the second ring groove 53 is matched with the oil seals 2 on the two sides and the rotating shaft 4 to form a second ring cavity, the grease is guided to the first ring cavity after being injected into the channel 13 and is guided into the second ring cavity through the through hole 51 after being filled in the first ring cavity, and lubrication on the oil seals 2 is realized.
The limiting ring 5 is arranged to be of an I-shaped cross section, so that the situation that grease cannot be injected smoothly due to the fact that the through hole 51 is separated from the port of the channel 13 in an aligned state after the limiting ring 5 is arranged between the two oil seals 2 and moves in the working process of the speed reducer is avoided.
Further, as shown in fig. 5, the through hole 51 is provided in plural in the circumferential direction of the retainer ring 5. So that the grease can be injected between the two oil seals 2 quickly.
Example 3
In consideration of the above embodiment, after the reduction gearbox normally works for a period of time, the position of the limiting ring 5 is shifted rotationally, and by arranging the convex ring 31 on the side of the pressure plate 3 facing the transparent cover 1, the convex ring 31 is coaxially arranged with the opening of the pressure plate 3 and is adapted to the mounting groove 12.
When clamp plate 3 passes through the bolt fastening and when covering 1 tip thoroughly, set up and to compress tightly oil blanket 2 towards the installation groove 12 end on covering 1 thoroughly, make two oil blanket 2 compress tightly spacing ring 5 from both sides, avoid the circumstances that spacing ring 5 appears removing, ensure through-hole 51 on the spacing ring 5 and can aim at with 13 mouths of passageway all the time, make the grease pour into smoothly.
In this application, be provided with glib 6 in 13 outer wall orifices departments of passageway, the grease of being convenient for pours into, and is applicable to the more occasion of dust, simple to operate. The pressing plate 3 is fixedly connected with the transparent cover 1 through a bolt, and the transparent cover 1 is fixedly connected with the box body 7 through a bolt.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. An oil seal lubricating structure, characterized by comprising: the transmission cover penetrates through the rotating shaft and is fixed on the speed reducer box body, and the oil seal is sleeved on the rotating shaft and is fixedly pressed on the transmission cover through the pressing plate;
an installation groove is formed in the inner wall of the through cover perforation, at least two oil seals are arranged in the installation groove, a limiting ring is arranged between every two adjacent oil seals, and a through hole is formed in the limiting ring along the radial direction of the limiting ring;
and a channel is formed in the side wall of the transparent cover in a penetrating way towards the through hole, and lubricating grease is injected between every two adjacent oil seals through the channel and the through hole.
2. An oil seal lubricating structure according to claim 1, wherein the mounting groove is provided along the circumferential direction of the through hole and extends axially along the through hole from the end of the transparent cover away from the case body, and the pressure plate is located at the end of the transparent cover away from the case body.
3. An oil seal lubricating structure as defined in claim 2, wherein the diameters of the through hole and the opening of the pressure plate are slightly larger than the diameter of the rotating shaft, and the inner ring and the outer ring of the oil seal are respectively in contact with the outer wall of the rotating shaft and the circumferential inner wall of the mounting groove.
4. An oil seal lubricating structure according to claim 2, wherein the size of the outer ring of the limit ring is adapted to the mounting groove, and the diameter of the inner ring of the limit ring is larger than that of the rotating shaft.
5. An oil seal lubricating structure according to any one of claims 1 to 4, wherein the cross section of the limit ring is I-shaped, the limit ring comprises a first ring groove and a second ring groove which are respectively arranged on an outer ring and an inner ring of the limit ring along the circumferential direction of the limit ring, and the through hole is communicated with the first ring groove and the second ring groove.
6. An oil seal lubricating structure according to claim 5, characterized in that the through hole is provided in plurality in the circumferential direction of the retainer ring.
7. An oil seal lubricating structure as defined in claim 2, wherein a convex ring is arranged on one side of the pressure plate facing the through cover, and the convex ring is coaxially arranged with the pressure plate opening and is adapted to the mounting groove.
8. An oil-sealed lubricating structure as defined in claim 1, wherein an oil nipple is provided at the port of the outer wall of the passageway.
9. An oil seal lubricating structure as defined in claim 1, wherein the pressure plate is fixedly connected with the transparent cover through bolts, and the transparent cover is fixedly connected with the box body through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221794827.0U CN217713566U (en) | 2022-07-12 | 2022-07-12 | Oil seal lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221794827.0U CN217713566U (en) | 2022-07-12 | 2022-07-12 | Oil seal lubricating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217713566U true CN217713566U (en) | 2022-11-01 |
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ID=83779791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221794827.0U Active CN217713566U (en) | 2022-07-12 | 2022-07-12 | Oil seal lubricating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217713566U (en) |
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2022
- 2022-07-12 CN CN202221794827.0U patent/CN217713566U/en active Active
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