CN214743230U - High-speed railway gear box seal structure - Google Patents
High-speed railway gear box seal structure Download PDFInfo
- Publication number
- CN214743230U CN214743230U CN202120435628.XU CN202120435628U CN214743230U CN 214743230 U CN214743230 U CN 214743230U CN 202120435628 U CN202120435628 U CN 202120435628U CN 214743230 U CN214743230 U CN 214743230U
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- China
- Prior art keywords
- input shaft
- oil slinger
- output shaft
- ring
- oil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000003068 static effect Effects 0.000 claims description 25
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 107
- 239000010687 lubricating oil Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000006837 decompression Effects 0.000 abstract description 2
- 239000003595 mist Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000004722 stifle Anatomy 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a high-speed rail gearbox sealing structure, which comprises an input shaft box seal and an axle box seal, wherein the input shaft box seal comprises an input shaft transparent cover, a blank cap, an input shaft oil slinger and an input shaft oil retainer; the axle box seal comprises a water seal ring, an output shaft through cover, an output shaft oil slinger, an inner side oil slinger and an outer side oil slinger; the utility model mainly relates to a sealed form of axial fender oil and radial labyrinth seal combination, the sealed chamber that forms great volumetric labyrinth between oil scraper ring, oil slinger, the lid thoroughly, it is obvious to the high-pressure draught step-down effect that gets into the intracavity, the oil slinger with pass through the design have multichannel non-contact labyrinth between the lid, can effectually avoid lubricating oil to leak, pass through the lid outside design have the rain eaves of preventing, outside seal chamber bottom design has the wash port, just the utility model has the characteristics of spare part is small in quantity, sealed decompression is effectual, and is reliable durable, and assembly maintenance is convenient.
Description
Technical Field
The utility model relates to a high-speed railway gear box technical field specifically is a high-speed railway gear box seal structure.
Background
At present, the high-speed rail gear box mostly adopts a lubricating mode of oil storage and splash lubrication inside the box body. Along with the development of high-speed and light-weight high-speed gear boxes, the working rotating speeds of gears and bearings in the high-speed gear boxes are higher and higher, and because the internal space of the high-speed gear boxes is limited, the gears and the bearings which run at high speed stir lubricating oil to splash and generate heat, so that the internal pressure of the gear boxes is increased, the lubricating oil is easy to leak from the input shaft and the axle, and the lubricating oil loss is caused. The labyrinth seal structure commonly used at present has the problems of poor pressure reduction effect, various parts, incapability of meeting the requirement of light weight, high assembly and maintenance difficulty and the like. Therefore, a high-speed rail gearbox sealing structure with good sealing and pressure reducing effects, light weight and convenience in assembly and maintenance is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-speed railway gear box seal structure, through high-speed railway gear box seal structure's theory of operation, can solve the decompression effect of solving present common seal structure ubiquitous not good, easy seepage, the seal structure part is numerous and diverse, the problem that the assembly maintenance degree of difficulty is big.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-speed railway gearbox seal structure, passes through the lid including input axle box, axle box and output shaft, the input axle box is kept away from motor one side and is installed stifle, and is close to motor one side and installs input shaft pass through the lid, the inside of input axle box is provided with the input shaft, the input shaft is close to motor one side and installs the bearing, input shaft oil slinger and input shaft oil slinger are installed to the bearing outside, input shaft oil slinger is installed on the input axle box, input shaft oil slinger installs on the input shaft, input shaft oil slinger with non-contact between the input shaft oil slinger, be provided with the dynamic seal ring on the input shaft oil slinger, be provided with static seal ring on the input shaft pass through the lid, the input shaft pass through the lid and install in the input shaft oil slinger outside, just non-contact between input shaft pass lid and the input shaft oil slinger, static seal ring on the input shaft pass through lid with the dynamic seal ring on the input shaft oil slinger forms multichannel non-contact labyrinth seal structure (ii) a
The axle box is of a bilateral symmetry structure, a large gear is arranged in the axle box, axle bearings are symmetrically arranged on two sides of the large gear, an axle is arranged in the axle box, the axle is arranged in inner holes of the large gear and the axle bearings on two sides through interference fit, an inner side oil retainer is arranged on one side of the axle bearing close to the large gear, an outer side oil retainer and an output shaft oil slinger are arranged on one side of the axle bearing far away from the large gear, the outer side oil retainer is arranged on the axle box, the output shaft oil slinger is arranged on the axle, a movable sealing ring is arranged on the output shaft oil slinger, the outer side oil retainer is not in contact with the output shaft oil slinger, an output shaft through cover is arranged on the outer side of the output shaft oil slinger, the output shaft through cover is not in contact with the output shaft oil slinger, and a static sealing ring is arranged on the output shaft through cover, and the static sealing ring and the movable sealing ring on the output shaft oil slinger form a multi-channel non-contact labyrinth sealing structure, a water sealing ring is mounted on the axle and positioned on the outer side of the output shaft oil slinger, and the water sealing ring is in non-contact with the output shaft through cover.
Preferably, the outermost sides of the input shaft transparent cover and the output shaft transparent cover are provided with a rain-proof eaves and a drain hole, and the side walls of the input shaft box and the axle box are provided with oil return holes.
Preferably, a plurality of non-contact labyrinth seal structures are formed between the static seal ring and the dynamic seal ring, a sharp corner is arranged at the tail end of one ring at the radial outermost side of the static seal ring, and a slope is arranged on the outer side of the dynamic seal ring.
Preferably, an inner labyrinth seal cavity is formed among the input shaft oil slinger, the input shaft oil slinger and the input shaft through cover in the input shaft box, and an inner labyrinth seal cavity is also formed among the outer side oil slinger, the output shaft oil slinger and the output shaft through cover in the axle box.
Preferably, the outer diameter of the input shaft oil slinger is provided with an arc-shaped bulge, an outer side sealing cavity is formed between the input shaft through cover and the input shaft oil slinger, and the arc-shaped bulge is positioned inside the outer side sealing cavity.
Preferably, a convex block is arranged on the outer side, close to the output shaft transparent cover, of the output shaft transparent cover, an outer side sealing cavity is formed among the water sealing ring, the convex block and the static sealing ring on the output shaft transparent cover, an arc-shaped groove is formed in the outer diameter of the water sealing ring, and the groove is located inside the outer side sealing cavity.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses mainly input shaft box seal all is provided with the great inboard labyrinth seal chamber of volume with axle box seal, not only can effectively reduce the pressure of air current, still leaves certain space for intracavity return oil hole department and stores long-pending oil, avoids intracavity long-pending oil and oil slinger to take place the contact.
2. The utility model discloses cover quiet sealing ring and setting thoroughly, output shaft outside oil retainer sets up on the bearing frame, reduces part quantity, reduces the assembly degree of difficulty.
3. The utility model discloses covering thoroughly and being provided with rain-proof eaves and wash port, avoiding outside sleet to get into in the box.
Drawings
FIG. 1 is a schematic view of a sectional structure of a gear box according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of an axle housing according to the present invention;
fig. 4 is an enlarged schematic view of B in fig. 3.
In the figure: 1. an input axle housing; 2. covering the blank with a cover; 3. an input shaft; 4. a bearing; 5. an input shaft oil retainer ring; 6. The input shaft is covered; 7. an input shaft oil slinger; 8. a drain hole; 9. an arc-shaped bulge; 10. rain eaves are prevented; 11. A static seal ring; 12. a movable sealing ring; 13. an oil return hole; 14. an axle box; 15. an axle bearing; 16. An inner oil slinger; 17. an outer oil slinger; 18. an output shaft transparent cover; 19. an output shaft oil slinger; 20. A water seal ring; 21. sharp corners; 22. a bull gear; 23. an axle; 24. a bump; 25. an outer sealed cavity; 26. the inside labyrinth seals the chamber.
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. 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.
Referring to fig. 1-4, the present invention provides a technical solution: a high-speed rail gear box sealing structure comprises an input shaft box 1 and an axle box 14, wherein a blank cap 2 is arranged on one side of the input shaft box 1 far away from a motor, an input shaft through cover 6 is arranged on one side close to the motor, an input shaft 3 is arranged in the input shaft box 1, a bearing 4 is arranged on one side of the input shaft 3 close to the motor, an input shaft oil slinger 5 and an input shaft oil slinger 7 are arranged on the outer side of the bearing 4, the input shaft oil slinger 5 is arranged on the input shaft box 1, the input shaft oil slinger 7 is arranged on the input shaft 3, the input shaft oil slinger 5 is in non-contact with the input shaft oil slinger 7, a movable sealing ring 12 is arranged on the input shaft oil slinger 7, a static sealing ring 11 is arranged on the input shaft through cover 6, the input shaft through cover 6 is arranged on the outer side of the input shaft oil slinger 7, the input shaft through cover 6 is in non-contact with the input shaft oil slinger 7, and a static sealing ring 11 on the input shaft through cover 6 and a dynamic sealing ring 12 on the input shaft oil slinger 7 form a multi-channel non-contact labyrinth sealing structure;
the axle box 14 is in a bilateral symmetry structure, a large gear 22 is arranged in the axle box 14, axle bearings 15 are symmetrically arranged on two sides of the large gear 22, an axle 23 is arranged in the axle box 14, the axle 23 is arranged in inner holes of the large gear 22 and the axle bearings 15 on two sides in an interference fit manner, an inner side oil slinger 16 is arranged on one side, close to the large gear 22, of the axle bearing 15, an outer side oil slinger 17 and an output shaft oil slinger 19 are arranged on one side, away from the large gear, of the axle bearing 15, the outer side oil slinger 17 is arranged on the axle box 14, the output shaft oil slinger 19 is arranged on the axle 23, a movable sealing ring 12 is arranged on the output shaft oil slinger 19, the outer side oil slinger 17 is in non-contact with the output shaft oil slinger 19, an output shaft transparent cover 18 is arranged on the outer side of the output shaft oil slinger 19, the output shaft transparent cover 18 is in non-contact with the output shaft oil slinger 19, and a static sealing ring 11 is arranged on the output shaft transparent cover 18, the static sealing ring 11 and the movable sealing ring 12 on the output shaft oil slinger 19 form a multi-channel non-contact labyrinth sealing structure, a water sealing ring 20 is mounted on the axle 23, the water sealing ring 20 is positioned on the outer side of the output shaft oil slinger 19, and the water sealing ring 20 is in non-contact with the output shaft transparent cover 18;
the outermost sides of the input shaft transparent cover 6 and the output shaft transparent cover 18 are both provided with a rain-proof eaves 10 and a drain hole 8, and the side walls of the input shaft box 1 and the axle box 14 are both provided with oil return holes 13, so that external rain and snow can be prevented from entering the box body;
a plurality of non-contact labyrinth seal structures are formed between the static seal ring 11 and the dynamic seal ring 12, a sharp corner 21 is arranged at the tail end of one ring at the outermost side in the radial direction of the static seal ring 11, a slope is arranged at the outer side of the dynamic seal ring 12, when the input shaft oil slinger 7 or the output shaft oil slinger 19 rotates at a high speed through the slope of the static seal ring 11, centrifugal force is generated, a small amount of lubricating oil entering the inner labyrinth seal cavity 26 is thrown onto the inner walls of the input shaft transparent cover 6 and the output shaft transparent cover 18 through the slope, the lubricating oil flows back to the bottoms of the input shaft transparent cover 6 and the output shaft transparent cover 18 and flows back into the box body through the arranged oil return hole 13; by the design of the sharp corner 21, lubricating oil splashed onto the inner wall of the transparent cover can be prevented from flowing into a labyrinth seal gap; the static sealing ring 11 is arranged on the transparent cover, and the oil slinger on the outer side of the output shaft is arranged on the bearing seat, so that the number of parts can be reduced, and the assembly difficulty can be reduced;
an inner labyrinth seal cavity 26 with large volume is formed among an input shaft oil retainer ring 5, an input shaft oil slinger 7 and an input shaft transparent cover 6 in an input shaft box 1, an inner labyrinth seal cavity 26 with large volume is also formed among an outer oil retainer ring 17, an output shaft oil slinger 19 and an output shaft transparent cover 18 in a vehicle shaft box 14, and a plurality of labyrinth seal gaps are formed in the inner labyrinth seal cavity 26 through the arrangement of a static seal ring 11 and a dynamic seal ring 12, so that a strong blocking effect is realized on lubricating oil;
an arc-shaped bulge 9 is arranged on the outer diameter of the input shaft oil slinger 7, an outer side sealing cavity 25 is formed between the input shaft transparent cover 6 and the input shaft oil slinger 7, and the arc-shaped bulge 9 is positioned inside the outer side sealing cavity 25;
the position of the output shaft transparent cover 18, which is close to the outer side, is provided with a convex block 24, the convex block 24 is in non-contact with the water seal ring 20, the output shaft transparent cover 18 and the water seal ring 20 form an outer side sealing cavity 25, and the outer diameter of the water seal ring 20 is provided with an arc-shaped groove.
The working principle is as follows: when the gear box works, lubricating oil in the box body is stirred by the high-speed rotation of the large gear 22, splashes and generates heat, and part of the lubricating oil forms high-pressure oil mist, the input shaft oil retainer 5 in the input shaft box 1, the inner oil retainer 16 and the outer oil retainer 17 in the axle box 14 can prevent most of the lubricating oil from entering the inner labyrinth seal cavity 26, and only a small amount of high-pressure oil mist enters the labyrinth seal cavity through a gap between the oil retainers and the oil slinger rotating at high speed.
An inner labyrinth seal cavity 26 with larger volume is formed among the input shaft oil baffle ring 5, the input shaft oil slinger 7 and the input shaft through cover 6 in the input shaft box 1; an inner labyrinth seal cavity 26 with larger volume is also formed among the outer oil retainer ring 17, the output shaft oil slinger 19 and the output shaft transparent cover 18 in the axle box 14; because the volume of the inner side labyrinth seal cavity 26 is large, when high-pressure oil mist airflow enters the labyrinth seal cavity, the airflow can form vortex, kinetic energy is converted into heat energy, pressure is reduced along with the vortex, the effect of blocking seal is achieved, and the large inner side labyrinth seal cavity 26 can also prevent oil accumulated at an oil return hole from contacting with an oil slinger.
When the input shaft oil slinger 7 and the output shaft oil slinger 19 rotate at a high speed, the dynamic sealing ring 12 can generate centrifugal force, the slope with a certain angle is arranged on the outer side of the dynamic sealing ring 12, a small amount of lubricating oil entering the inner labyrinth seal cavity 26 can be thrown onto the inner walls of the input shaft transparent cover 6 and the output shaft transparent cover 18 through the slope, the oil return hole 13 is formed in the box body, and when the lubricating oil flows back to the bottom of the seal cavity, the lubricating oil can flow back to an oil pool at the bottom of the box body through the oil return hole 13.
The tail end of one ring at the outermost side in the radial direction of the static sealing ring 11 is provided with a sharp corner 21 which can prevent lubricating oil thrown to the inner wall of the transparent cover from flowing into a labyrinth sealing gap.
Non-contact between static sealing ring 11 and the dynamic sealing ring 12 forms multichannel labyrinth seal structure, and labyrinth seal has stronger separation effect, has few oil mist to enter into labyrinth seal's clearance, because the viscidity of lubricating oil is special, under the frictional action of static sealing ring 11 and dynamic sealing ring 12, can slow down the velocity of flow by a wide margin, reduces the allowance to reach the effect of stopping leakage.
The input shaft transparent cover 6 and the output shaft transparent cover 18 are both provided with rain-proof eaves 10 to prevent most rainwater from flowing into gaps from the outer side of the box body.
Be provided with the arc arch 9 on the input shaft oil slinger 7, the rainwater that very few got into in the outside seal chamber 25 between input shaft cover 6 and the input shaft oil slinger 7 can receive the effect of blockking of arc arch 9, again because arc arch 9 is along with input shaft oil slinger 7 high-speed rotatory, centrifugal force is used to get rid of the rainwater to outside seal chamber 25 wall on, the wash port 8 discharge of rethread setting in the bottom to avoid polluting lubricating oil.
The output shaft passes through being provided with lug 24 near the outside position of lid 18, lug 24 and water seal ring 20 non-contact, the output shaft passes through lid 18 and water seal ring 20 and forms outside seal chamber 25, be provided with the arc recess on the external diameter of water seal ring 20, the recess has the effect of blockking and collecing to a small number of rainwater that gets into outside seal chamber 25, because water seal ring 20 is rotatory along with the axle is high-speed, collect the rainwater in the recess and can be got rid of to outside seal chamber 25 on the wall, the rethread sets up the wash port 8 discharge in the bottom, thereby avoid polluting lubricating oil.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a high-speed railway gearbox seal structure, includes input axle box (1), axle box (14) and output shaft transparent cover (18), its characterized in that: the input shaft box (1) is far away from one side of the motor and is provided with a blank cap (2), one side of the input shaft box close to the motor is provided with an input shaft transparent cap (6), the input shaft (3) is arranged in the input shaft box (1), one side of the input shaft (3) close to the motor is provided with a bearing (4), the outer side of the bearing (4) is provided with an input shaft oil baffle ring (5) and an input shaft oil slinger (7), the input shaft oil baffle ring (5) is arranged on the input shaft box (1), the input shaft oil slinger (7) is arranged on the input shaft (3), the input shaft oil baffle ring (5) and the input shaft oil slinger (7) are in non-contact, the input shaft oil slinger (7) is provided with a movable sealing ring (12), the input shaft transparent cap (6) is provided with a static sealing ring (11), and the input shaft transparent cap (6) is arranged on the outer side of the input shaft oil slinger (7), the input shaft through cover (6) is in non-contact with the input shaft oil slinger (7), and a static sealing ring (11) on the input shaft through cover (6) and a dynamic sealing ring (12) on the input shaft oil slinger (7) form a multi-channel non-contact labyrinth sealing structure;
the automobile axle box (14) is of a bilateral symmetry structure, a large gear (22) is arranged in the automobile axle box (14), axle bearings (15) are symmetrically arranged on two sides of the large gear (22), an axle (23) is arranged in the automobile axle box (14), the axle (23) is arranged in inner holes of the large gear (22) and the axle bearings (15) on two sides in an interference fit mode, an inner side oil slinger (16) is arranged on one side, close to the large gear (22), of the axle bearing (15), an outer side oil slinger (17) and an output shaft oil slinger (19) are arranged on one side, far away from the large gear, of the axle bearing (15), the outer side oil slinger (17) is arranged on the automobile axle box (14), the output shaft oil slinger (19) is arranged on the axle (23), a movable sealing ring (12) is arranged on the output shaft oil slinger (19), and the outer side oil slinger (17) is in non-contact with the output shaft oil slinger (19), the output shaft penetrates the lid (18) and installs in output shaft oil slinger (19) outside, just non-contact between output shaft cover (18) and the output shaft oil slinger (19), be provided with static sealing ring (11) on output shaft cover (18), just movable sealing ring (12) on static sealing ring (11) and the output shaft oil slinger (19) form multichannel non-contact labyrinth seal structure, install water seal ring (20) on axletree (23), just water seal ring (20) are located the outside of output shaft oil slinger (19), water seal ring (20) with non-contact between output shaft cover (18).
2. The high-speed rail gearbox sealing structure according to claim 1, characterized in that: the outer sides of the input shaft transparent cover (6) and the output shaft transparent cover (18) are respectively provided with a rain-proof brim (10) and a drain hole (8), and the side walls of the input shaft box (1) and the axle box (14) are respectively provided with an oil return hole (13).
3. The high-speed railway gearbox seal structure of claim 2, characterized by: quiet sealing ring (11) and move sealing ring (12) and form multichannel non-contact labyrinth seal structure between the two, a radial outside ring end of quiet sealing ring (11) is provided with closed angle (21), it is provided with the slope to move sealing ring (12) outside.
4. The high-speed railway gearbox seal structure of claim 3, characterized by: an inner side labyrinth seal cavity (26) is formed among an input shaft oil retainer ring (5), an input shaft oil slinger (7) and an input shaft transparent cover (6) in the input shaft box (1), and an inner side labyrinth seal cavity (26) is also formed among an outer side oil retainer ring (17), an output shaft oil slinger (19) and an output shaft transparent cover (18) in the axle box (14).
5. The high-speed rail gearbox sealing structure according to claim 4, wherein: the outer diameter of the input shaft oil slinger (7) is provided with an arc-shaped bulge (9), an outer side sealing cavity (25) is formed between the input shaft transparent cover (6) and the input shaft oil slinger (7), and the arc-shaped bulge (9) is located inside the outer side sealing cavity (25).
6. The high-speed railway gearbox seal structure of claim 5, characterized by: the outer side of the output shaft transparent cover (18) close to the output shaft is provided with a convex block (24), an outer side sealing cavity (25) is formed among the water seal ring (20), the convex block (24) and the static sealing ring (11) on the output shaft transparent cover (18), an arc-shaped groove is formed in the outer diameter of the water seal ring (20), and the groove is located inside the outer side sealing cavity (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435628.XU CN214743230U (en) | 2021-02-26 | 2021-02-26 | High-speed railway gear box seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435628.XU CN214743230U (en) | 2021-02-26 | 2021-02-26 | High-speed railway gear box seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214743230U true CN214743230U (en) | 2021-11-16 |
Family
ID=78590764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120435628.XU Expired - Fee Related CN214743230U (en) | 2021-02-26 | 2021-02-26 | High-speed railway gear box seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214743230U (en) |
-
2021
- 2021-02-26 CN CN202120435628.XU patent/CN214743230U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211116 |