CN218325873U

CN218325873U - Internal circulation lubricating and sealing structure for crowned tooth transmission shaft

Info

Publication number: CN218325873U
Application number: CN202222862712.7U
Authority: CN
Inventors: 赵海涛
Original assignee: SMS Engineering China Ltd
Current assignee: SMS Engineering China Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-01-17
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a cydariform tooth is inner loop lubrication seal structure for transmission shaft, transmission shaft include main shaft and tooth cover, and the tooth cover is established in the periphery of main shaft one end. The gear sleeve is provided with a first oil way, a gear is arranged on the end face of the gear sleeve, a third oil way is arranged on the main shaft, and the inner circulation lubrication sealing structure for the crowned tooth transmission shaft comprises an inner ring, an inner side pressing ring and a sealing assembly. The inner ring is arranged on the main shaft and is provided with a second oil way. The gear sleeve is provided with a gear, the gear is arranged in the gear sleeve, the gear sleeve is provided with a gear hole, the gear hole is communicated with the gear hole, the gear hole is arranged in the gear sleeve, the gear hole is arranged in the gear hole, and the gear hole is communicated with the gear hole. The sealing assembly is provided with a sealing support ring, and the sealing support ring is connected with the inner side compression ring and the inner ring in a sealing mode to realize the sealing arrangement of the oil channel. The internal circulation lubricating and sealing structure for the crowned tooth transmission shaft effectively relieves the oil leakage condition at the external connection part of the oil passage during internal circulation.

Description

Internal circulation lubricating and sealing structure for crowned tooth transmission shaft

Technical Field

The utility model relates to a lubricated field of transmission shaft especially relates to an inner loop lubrication seal structure for cydariform tooth transmission shaft.

Background

At present, drum-type tooth-type universal transmission shafts in domestic and foreign markets have various lubricating modes, and the lubricating modes mainly comprise grease lubrication, oil-collecting box type external circulation thin oil lubrication, oil return cylinder type internal circulation thin oil lubrication, oil cloth bag type internal circulation thin oil lubrication and oil cloth bag type oil immersion lubrication. Grease lubrication and oil-immersed lubrication have no fluidity, the lubrication efficiency is not high, and heat cannot be taken away, so that the abrasion of parts such as the tooth surface of the shaft sleeve is fast. Therefore, the two lubrication modes are gradually replaced by forced circulation thin oil lubrication (oil collection box type external circulation thin oil lubrication and forced internal circulation thin oil lubrication), after the thin oil lubrication is adopted, the tooth surface abrasion can be greatly reduced, the abrasion loss is about 10 percent of that of grease lubrication, the forced circulation lubrication can take away the rolling heat at the end of a rolling roller and the heat generated by the friction of gear teeth, and the reduction of allowable contact stress on the surface of a gear tooth material is effectively prevented; under normal conditions, the phenomenon of tooth breakage can not occur, and the requirements of the working characteristics of the continuous rolling mill are met.

However, in the conventional forced circulation thin oil lubrication mode, oil leakage is easily caused at the joint of the oil way, so that the production environment is easily polluted.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention 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

An object of the utility model is to provide an inner loop lubrication seal structure for cydariform tooth transmission shaft, it can effectively alleviate the emergence of transmission shaft inner loop oil circuit oil leak condition.

In order to achieve the above object, the utility model provides an inner loop lubrication seal structure for cydariform tooth transmission shaft, the transmission shaft includes the main shaft and locates the tooth cover in main shaft one end periphery, the tooth cover has first oil circuit, the terminal surface of tooth cover is equipped with the gear, be equipped with the third oil circuit on the main shaft, this inner loop lubrication seal structure for cydariform tooth transmission shaft includes inner ring, inboard clamping ring and seal assembly. The inner ring is arranged on the main shaft and is provided with a second oil path. The inboard clamping ring is located the tooth sheathes in, this inboard clamping ring with the terminal surface of tooth cover reaches the main shaft forms first fluid cavity, so that first oil circuit with the third oil circuit with first fluid cavity forms the fluid passageway that is linked together, the gear is located first fluid intracavity. The sealing assembly is provided with a sealing support ring, and the sealing support ring is connected with the inner side pressure ring and the inner ring in a sealing manner.

In one or more embodiments, seal assembly includes intermediate ring and outside clamping ring, intermediate ring with between the inboard clamping ring and intermediate ring with be formed with the sealing ring chamber between the clamping ring of outside, be equipped with sealed support ring in the sealing ring intracavity, sealed support ring with inboard clamping ring reaches inner ring sealing connection.

In one or more embodiments, be equipped with side annular and main ring groove on the seal support ring, the side annular with be equipped with side sealing ring and main sealing ring in the main ring groove, so that the seal support ring with inboard clamping ring reaches the inner ring forms sealing connection.

In one or more embodiments, a first annular groove is formed in the inner side pressing ring, and a first sealing ring is arranged in the first annular groove, so that the inner side pressing ring is connected with the gear sleeve in a sealing mode.

In one or more embodiments, a second ring groove is formed in the intermediate ring, and a second sealing ring is arranged in the second ring groove, so that the intermediate ring is in sealing connection with the inner side pressure ring.

In one or more embodiments, a third ring groove is formed in the outer pressing ring, and a third sealing ring is arranged in the third ring groove, so that the outer pressing ring is connected with the intermediate ring in a sealing mode.

In one or more embodiments, a fourth ring groove is formed in the inner ring, and a fourth sealing ring is arranged in the fourth ring groove, so that the inner ring is in sealing connection with the main shaft.

In one or more embodiments, a second oil chamber is formed between the inner ring and the main shaft, and the second oil chamber communicates with the second oil passage and the third oil passage.

Compared with the prior art, according to the utility model discloses an inner loop lubrication seal structure for crowned teeth transmission shaft has following advantage:

through set up inboard clamping ring, intermediate ring, outside clamping ring and the inner ring of mutual sealing contact in the junction of tooth cover and main shaft to form first fluid chamber, played fine lubrication action to the gear in the first fluid chamber, make the first oil circuit of tooth cover, the second oil circuit on the inner ring, the third oil circuit of first fluid chamber and main shaft form a sealed fluid passageway, the condition of oil leak when the effectual transmission shaft lubrication cycle that has alleviated.

Drawings

Fig. 1 is a partial schematic structural view of an internal circulation lubrication seal structure for a crowned tooth drive shaft according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an unmounted seal support ring of an internal circulation lubrication seal structure for a crowned tooth transmission shaft according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an inner compression ring, an intermediate ring, and an outer compression ring and an inner ring of an internal circulation lubrication sealing structure for a crown gear transmission shaft according to an embodiment of the present invention.

Description of the main reference numerals:

1. a main shaft; 2. an inner compression ring; 3. an intermediate ring; 4. an outer compression ring; 5. a gear sleeve; 6. a first oil chamber; 7. a first oil passage; 8. a second oil passage; 9. a third oil passage; 10. a gear; 11. an inner ring; 12. sealing the ring cavity; 13. a sealing support ring; 14. a side seal ring; 15. a primary seal ring; 16. a first seal ring; 17. a second seal ring; 18. a third seal ring; 19. a second oil chamber; 20. a fourth seal ring; 21. a first ring groove; 22. a second ring groove; 23. a third ring groove; 24. a side ring groove; 25. a main ring groove; 26. a fourth ring groove.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations such as "comprises" or "comprising", etc., will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1 to 3, according to the utility model discloses an inner loop lubrication seal structure for crowned tooth transmission shaft of an embodiment, the transmission shaft includes main shaft 1 and tooth cover 5, and the one end at main shaft 1 is established to tooth cover 5 cover. The gear sleeve 5 is provided with a first oil path 7, a gear 10 is arranged on the end face of the gear sleeve 5, a third oil path 9 is arranged on the main shaft 1, and the internal circulation lubrication sealing structure for the crowned tooth transmission shaft comprises an inner ring 11, an inner side pressure ring 2 and a sealing assembly. The inner ring 11 is provided on the main shaft 1, and the inner ring 11 has a second oil passage 8. The inner side pressing ring 2 is arranged on the gear sleeve 5, the inner side pressing ring 2, the end face of the gear sleeve 5 and the main shaft 1 form a first oil cavity 6, so that a first oil channel 7 and a third oil channel 9 form an oil channel communicated with the first oil cavity 6, and the gear 10 is located in the first oil cavity 6. The sealing assembly is provided with a sealing support ring 13, and the sealing support ring 13 is hermetically connected with the inner side compression ring 2 and the inner ring 11 to realize the sealing arrangement of the oil channel.

Specifically, in one embodiment, the seal assembly includes an intermediate ring 3 and an outer compression ring 4, a seal ring cavity 12 is formed between the intermediate ring 3 and the inner compression ring 2 and between the intermediate ring 3 and the outer compression ring 4, and a seal support ring 13 is provided in the seal ring cavity 12. Specifically, the sealing support ring 13 is provided with a side ring groove 24 and a main ring groove 25, and the side ring groove 24 and the main ring groove 25 are internally provided with a side sealing ring 14 and a main sealing ring 15, so that the sealing support ring 13 is in sealing connection with the inner side compression ring 2 and the inner ring 11, preferably, one surface of the inner ring 11, which is in contact with the sealing support ring 13, is of a spherical structure, and the tightness of the sealing connection is improved.

In one embodiment, the inner compression ring 2 is provided with a first annular groove 21, and a first sealing ring 16 is arranged in the first annular groove 21 so that the inner compression ring 2 is hermetically connected with the gear sleeve 5. The intermediate ring 3 is provided with a second ring groove 22, and a second sealing ring 17 is arranged in the second ring groove 22, so that the intermediate ring 3 is hermetically connected with the inner side compression ring 2. The outer pressing ring 4 is provided with a third ring groove 23, and a third sealing ring 18 is arranged in the third ring groove 23, so that the outer pressing ring 4 is hermetically connected with the intermediate ring 3. A fourth ring groove 26 is arranged on the inner ring 11, and a fourth sealing ring 20 is arranged in the fourth ring groove 26, so that the inner ring 11 is in sealing connection with the main shaft 1.

Preferably, a second oil chamber 19 is formed between the inner ring 11 and the main shaft 1, and the second oil chamber 19 communicates with the second oil passage 8 and the third oil passage 9.

As shown in fig. 1 and 2, the inner press ring 2, the intermediate ring 3, and the outer press ring 4 are preferably fixed to the gear housing 5 by the same bolt.

through set up inboard clamping ring 2, intermediate ring 3, outside clamping ring 4 and inner ring 11 of mutual sealing contact in the junction of tooth cover 5 and main shaft 1 to form first oil liquid chamber 6, played fine lubrication action to gear 10 in the first oil liquid chamber 6, make the first oil circuit 7 of tooth cover 5, the second oil circuit 8 on the inner ring 11, first oil liquid chamber 6 and the third oil circuit 9 of main shaft 1 form a sealed fluid passageway, the condition of oil leak when the effectual transmission shaft lubrication cycle that has alleviated.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides an inner loop lubrication seal structure for cydariform tooth transmission shaft, the transmission shaft includes the main shaft and locates the tooth cover on the main shaft one end periphery, the tooth cover has first oil circuit, the terminal surface of tooth cover is equipped with the gear, be equipped with the third oil circuit on the main shaft, its characterized in that, this inner loop lubrication seal structure for cydariform tooth transmission shaft includes:

the inner ring is arranged on the main shaft and is provided with a second oil path;

the inner pressing ring is arranged on the gear sleeve, a first oil liquid cavity is formed by the inner pressing ring, the end face of the gear sleeve and the main shaft, so that the first oil path, the third oil path and the first oil liquid cavity form communicated oil liquid channels, and the gear is located in the first oil liquid cavity; and

and the sealing assembly is provided with a sealing support ring, and the sealing support ring is connected with the inner side pressure ring and the inner ring in a sealing manner.

2. The internal circulation lubrication and sealing structure for a crowned tooth drive shaft of claim 1 wherein said seal assembly includes an intermediate ring and an outer compression ring, a seal ring cavity is formed between said intermediate ring and said inner compression ring and between said intermediate ring and said outer compression ring, a seal support ring is disposed in said seal ring cavity, and said seal support ring is sealingly connected to said inner compression ring and said inner ring.

3. The internal circulation lubrication and seal arrangement for a crowned tooth drive shaft as claimed in claim 2 wherein said seal support ring has a side ring groove and a main ring groove, and a side seal ring and a main seal ring are disposed in said side ring groove and said main ring groove to sealingly engage said seal support ring with said inner compression ring and said inner ring.

4. The internal circulation lubrication seal for a crowned tooth drive shaft of claim 1 wherein said inner compression ring has a first annular groove therein, said first annular groove having a first sealing ring disposed therein for sealingly engaging said inner compression ring with said tooth sleeve.

5. The internal circulation lubrication seal for a crowned tooth drive shaft of claim 2 wherein said intermediate ring has a second annular groove and said second annular groove has a second seal ring disposed therein for sealingly engaging said intermediate ring with said inboard compression ring.

6. The internal circulation lubrication seal for a crowned tooth drive shaft of claim 2 wherein said outboard compression ring has a third annular groove therein, said third annular groove having a third sealing ring disposed therein for sealingly engaging said outboard compression ring with said intermediate ring.

7. The internal circulation lubrication seal for a crowned tooth drive shaft of claim 1 wherein said inner ring has a fourth groove, said fourth groove having a fourth sealing ring disposed therein for sealingly engaging said inner ring with said main shaft.

8. The internal circulation lubrication sealing structure for a crowned tooth drive shaft of claim 1 wherein a second oil chamber is formed between the inner ring and the main shaft, the second oil chamber being in communication with the second oil passage and the third oil passage.