CN104358858A - Multi-lip framework type oil sealing device - Google Patents

Abstract

A multi-lip skeleton type oil seal device, which belongs to the field of mining machinery transmission lubrication and sealing equipment, is characterized in that it is a gear box with a transmission shaft as the input and output power mode. The high-life sealing device designed for the seal between the center and the stationary bearing seat that plays a supporting role, referred to as the oil seal, its main function is to realize the relative movement between the shaft and the oil seal, and it is required not to leak the lubrication in the gearbox It is required to achieve good lubrication and sealing to ensure the reliable operation of the gearbox. The multi-lip skeleton oil seal of the present invention is widely used in mining, petrochemical, metallurgy, electric power, environmental protection and other systems and industries, especially under severe conditions. Tall gearbox power transmission.

Description

A multi-lip skeleton oil seal device

technical field

The invention relates to a multi-lip skeleton type oil seal device, which belongs to the field of mining machinery transmission lubrication and sealing equipment, and specifically relates to a gear box with a transmission shaft as the input and output power mode. The high-life sealing device designed for the seal between the center and the supporting static bearing seat, referred to as the oil seal, its main function is to realize the relative movement between the shaft and the oil seal, and it is required not to leak the lubrication in the gearbox It is required to achieve good lubrication and sealing to ensure the reliable operation of the gearbox. A multi-lip skeleton oil seal of the present invention is widely used in mining, petrochemical, metallurgy, electric power, environmental protection and other systems and industries, especially under severe conditions. Tall gearbox power transmission. the

Background technique

Under harsh conditions, the oil seal failure rate of the power transmission device of the gearbox is very high. Under heavy load and poor lubrication and maintenance, it develops geometrically. Continuous high-speed, high-temperature sliding contact for a long time will produce particulate matter during operation, forming an abrasive cloth effect at the seal of the skeleton oil seal. The long-term existence and abrasive action of these particulate matter will cause oil leakage between the lip of the oil seal and the shaft phenomenon, the lubricating ability between the two is relatively reduced, and at the same time, the friction effect between the two is relatively increased. With the operation process, this trend and phenomenon further expand until the shaft is ground and the oil seal leaks, forming a skeleton oil seal. Failure is the highest form of failure. Pulling the shaft out of the groove makes the failure of seal lubrication become the short board of the failure of the gearbox. Just like the patent application (patent) number: CN203796945U, it has achieved certain effects, but it only solves the sealing effect of the oil seal. The skeleton oil seal The emery cloth effect at the seal still exists; just as the application (patent) number: CN202967386U is concerned about the influence of some external dust and coal dust, the emery cloth effect at the seal of the skeleton oil seal still exists; the problem existing in the harsh environment is the emery cloth effect, there is an urgent need for a multi-lip skeleton oil seal that has strong adaptability, low production cost, and can work stably for a long time without maintenance in the above environment, so as to realize reliable control of the abrasive cloth effect during the working process of the skeleton oil seal. Realize the high life of the skeleton oil seal, ensure the environmental work needs in the production process, and realize the all-weather maintenance-free long-term stable operation of the gearbox power transmission device under harsh conditions. the

Contents of the invention

The purpose of the multi-lip skeleton type oil seal device of the present invention is to solve the existing and unsolvable problems in the above-mentioned prior art, thereby disclosing a simple, reliable, non-destructive, all-weather maintenance-free and long-term stable work in the above-mentioned environment. A multi-lip skeleton oil seal, which can reliably control the emery cloth effect during the working process of the skeleton oil seal, so as to realize the high life of the skeleton oil seal, ensure the environmental work needs in the production process, and realize the all-weather power transmission device of the reduction box under harsh conditions Maintenance-free long-term stable work. the

A multi-lip skeleton type oil seal device of the present invention is characterized in that it is a skeleton type oil seal device that combines multiple lips of different structures into multi-lip parts. The oil seal device consists of a first oil seal skeleton 4, a first Lip 1, second lip 2, third lip 3, first bearing 5, second bearing 12, first bearing seat 6, second bearing seat 11, first shaft 7, lubricating oil 8, gearbox 9. The first gear 10, the first bearing end cover 13, the first output shaft end cover 14, the third bearing 15, the third bearing housing 16, the second output shaft end cover 17, the second oil seal skeleton 18, the fourth lip Port 19, the fifth lip 20, the sixth lip 21, and the second gear 22, the second shaft 23, the fourth bearing seat 24, the fourth bearing 25 and the second bearing end cover 26; the second lip 2 Its structural features are the same as the third lip 3, there are randomly arranged concave and absorbing elastic holes at the lip part and the shape of the first shaft 7 where the sealing and lubrication work effectively, all rely on the concave shape of the lip part and the absorbing The shape of the second lip 2 and the third lip 3 contact with the first shaft 7 to form an oil film, and the concave shape of the second lip and the diameter of the absorbing elastic hole are 20~ 50 microns, randomly arranged at the contact with the first shaft 7, and the surface area of the concave shape and the absorbing elastic hole accounts for 1/3~1/4 of the oil film area at the contact with the first shaft 7; on the third lip 3 The concave shape and the diameter of the absorbing elastic hole are 10-30 microns, and they are randomly arranged in the contact with the first axis 7 like the second lip 2, and the surface area of the concave shape and the absorbing elastic hole occupies 10% of the first axis 7 1/5~1/6 of the area of the oil film is produced at the contact point; various particles are adsorbed and contained in the concave shape and the absorbing elastic hole during the working process, and the first shaft 7 does not rub against the particles, so the emery cloth effect cannot occurred, and the lips did not damage the first shaft 7 during operation; the structure of the first lip 1 is consistent with the structure of the traditional skeleton oil seal lip, the first lip 1 seals with the first shaft 7, and the first lip 1 The oil film is formed at the contact between the shape and the first shaft 7. Under the action of the second lip 2 and the third lip 3, the abrasive cloth effect does not occur during the working process of the first lip. In the closed gearbox 9, the first The first bearing 5 is installed on the position of the bearing seat 6, and the first oil seal skeleton 4, the first lip 1, the third lip 3, the first lip 2 and the first Bearing 5, the second bearing seat 11 is installed with the second bearing 12, the end of which is the first bearing end cover 13, the first shaft 7 is installed in the holes of the first bearing 5 and the second bearing 12 from the first shaft end cover 14 Out of the shaft, the first gear 10 and the first shaft 7 are fixedly installed in the middle of the first shaft 7, and the lubricating oil 8 is added to the 1/3 of the first gear in the submerged transmission system in the gearbox 9, and the fifth lip is also 20 and the sixth lip 21 have the same structural features, and there are randomly arranged concave and absorbing elastic holes at the lip part and the shape of the second shaft 23 where the sealing and lubrication work effectively, all relying on the concave shape of the lip part and the Absorption type elastic holes to absorb and contain various particles, the shape of the fifth lip 20 and the sixth lip 21 is consistent with the second axis Oil film is produced at the contact point of 23, the diameter of the concave shape and absorption type elastic hole on the sixth lip 21 is 20~50 microns, randomly arranged in the contact with the second shaft 23, and the surface area of the concave shape and absorption type elastic hole accounts for 1/3~1/4 of the oil film area at the contact with the second shaft 23; the concave shape and the diameter of the absorbing elastic hole on the fifth lip 20 are 10~30 microns, which are randomly arranged like the sixth lip 21 In the contact with the second shaft 23, the concave shape and the surface area of the absorbing elastic hole account for 1/5~1/6 of the oil film area in contact with the second shaft 23; various particles are adsorbed and contained in the concave during the working process Shaped shape and absorbing elastic holes, the second shaft 23 does not rub against the particles, so the emery cloth effect cannot occur, and the lips do not damage the second shaft 23 during operation; the structure of the fourth lip 19 is the same as that of the traditional The lip structure of skeleton type oil seal is the same, the fourth lip 19 seals with the second shaft 23, the shape of the fourth lip 19 contacts with the second shaft 23 to form an oil film, and the role of the sixth lip 21 and the fifth lip 20 Next, the emery cloth effect does not occur during the working process of the fourth lip 19. In the closed gearbox 9, the third bearing 15 is installed on the fourth bearing seat 16, and the third bearing 15 and the second shaft end cover 17 The second oil seal skeleton 18, the sixth lip 21, the fifth lip 20, and the fourth lip 19 are arranged in sequence in between, and the fourth lip 19 is adjacent to the second shaft end cover 17, and the fourth bearing seat 24 is located Install the fourth bearing 25 whose end is the second bearing end cover 26, the second shaft 23 is installed in the third bearing 15 and the fourth bearing 25 holes, and the shaft is output from the second output shaft end cover 17, and the second gear is fixedly installed It is in the middle of the second shaft 23 and meshes with the first gear 10 . the

The above-mentioned multi-lip skeleton type oil seal device is used in the closed gear box 9, the second shaft 23 drives the second gear 22, the third bearing 15, and the fourth bearing 25 to rotate, and the second gear 22 drives the first gear 10 Rotate, the first gear 10 drives the first shaft 7, the first bearing 5, the second bearing 12 to rotate, the first bearing 5, the first shaft 7, the first gear 10, the second bearing 12, the second shaft 23, the first The second gear 22, the third bearing 15, and the fourth bearing 25 will drive the lubricating oil 8 to splash in the gearbox 9, and the long-term continuous high-speed and high-temperature sliding contact between the bearing and the shaft and the skeleton oil seal will be generated during operation. Granular matter, the granular matter reaches the second lip 2 along with the lubricating oil 8, the granular matter is absorbed and contained, and there is no effective friction with the shaft, and the emery cloth effect cannot occur, and after long-term operation, some granular matter makes the second lip The adsorption and containment failure of the third lip 3 reaches the place where the third lip 3 affects the lubrication and sealing position, there will be a small amount of effective friction with the shaft, and the emery cloth effect will also occur, but the emery cloth effect is very weak to the shaft damage, pulling The formation time of the damage effect will be extended for a very long time, and the granular matter will basically not migrate to the position of the first lip 1, thus ensuring the effective sealing of the first lip 1, and at the same time, the granular matter will be transported with the lubricating oil 8 When reaching the sixth lip 21, the granular matter is adsorbed and contained, and there is no effective friction with the shaft, and the emery cloth effect cannot occur. After a long time of operation, some granular matter makes the fifth lip 20 unable to absorb and contain. Where the four lips 19 affect the lubricating and sealing position, there will be a small amount of effective friction with the shaft, and the abrasive cloth effect will also occur, but the abrasive cloth effect is very weak to the shaft damage, and the formation time of the strain effect will be prolonged for a very long time , the granular matter will basically not move to the position of the fourth lip 19, which ensures the effective sealing of the fourth lip 19, realizes the high life of the skeleton oil seal, ensures the environmental work requirements in the production process, and realizes harsh conditions The power transmission device of the lower reduction box is free of maintenance and works stably for a long time around the clock. the

A multi-lip skeleton type oil seal device of the present invention has the advantage of absorbing and containing various particles by relying on the concave shape of the second lip 2 lip parts and the absorbing elastic hole in the multi-lip working design mode, the second lip A good oil film is produced at the contact between the shape of the mouth 2 and the shaft, so that the emery cloth effect cannot occur during the working process; relying on the concave shape of the third lip 3 and the absorbing elastic holes to absorb and contain various particles, and relying on the third lip 3 The lip 3 is well sealed with the shaft, and the shape of the third lip 3 forms a good oil film in contact with the shaft, so that a small amount of emery cloth effect occurs during the working process; the structure of the first lip 1 is consistent with the traditional skeleton oil seal lip, that is, relying on The first lip 1 and the first shaft 7 are well sealed, and a good oil film is formed at the contact between the shape of the first lip 1 and the shaft, making it extremely difficult for the emery cloth effect to occur during the working process; thus, the emery cloth during the working process of the skeleton oil seal is realized. The reliable control of the effect prolongs the working life of the skeleton oil seal, and the accident of the shaft being pulled by the granular material is completely controllable, realizing the high life of the skeleton oil seal, ensuring the environmental work requirements in the production process, and realizing the power transmission of the gearbox under harsh conditions The device is free of maintenance and works stably for a long time around the clock. the

Description of drawings

Figure 1 is a structural schematic diagram of a multi-lip skeleton oil seal

Figure 2 is a schematic diagram of the application equipment of a multi-lip skeleton oil seal device

The labels in the figure are: 1, the first lip 2, the second lip 3, the third lip

4. The first oil seal frame 5. The first bearing 6. The first bearing seat

7. The first shaft 8. Lubricating oil 9. Gearbox

                                                            

13. The first bearing end cover, 14. The first output shaft end cover

15. The third bearing 16. The third bearing seat 17. The second shaft end cover

18. Second oil seal frame 19. Fourth lip 20. Fifth lip

21. The sixth lip 22. The second gear 23. The second shaft

24. The fourth bearing seat 25. The fourth bearing 26. The second bearing end cover.

Detailed ways

Implementation mode 1

The oil seal device consists of a first oil seal frame 4, a first lip 1, a second lip 2, a third lip 3, a first bearing 5, a second bearing 12, a first bearing seat 6, and a second bearing seat 11 , first shaft 7, lubricating oil 8, gearbox 9, first gear 10, first bearing end cover 13, first output shaft end cover 14, third bearing 15, third bearing housing 16, second output shaft end Cover 17, second oil seal frame 18, fourth lip 19, fifth lip 20, sixth lip 21, second gear 22, second shaft 23, fourth bearing seat 24, fourth bearing 25 and the first Two bearing end covers 26; the second lip 2 and the third lip 3 have the same structural features, and the concave and absorbing elastic parts are randomly arranged on the lip part and the first shaft 7 to seal and lubricate effectively. The holes rely on the concave shape of the lips and the absorbing elastic holes to absorb and contain various particles. The second lip 2 and the third lip 3 form an oil film at the contact with the first shaft 7, and the second lip is concave The diameter of the shape and absorption type elastic holes is 20 microns, randomly arranged at the contact with the first shaft 7, and the surface area of the concave shape and absorption type elastic holes accounts for 1/4 of the area of the oil film generated at the contact with the first shaft 7; The diameter of the concave shape and the absorption type elastic hole on the third lip 3 is 10 microns, which is randomly arranged at the contact with the first shaft 7 like the second lip 2, and the surface area of the concave shape and the absorption type elastic hole accounts for 1/6 of the area of the oil film is generated at the contact of the first shaft 7; various particles are adsorbed and contained in the concave shape and the absorbing elastic hole during the working process, and the first shaft 7 does not rub against the particles, so the emery cloth effect cannot occurred, and the lips did not damage the first shaft 7 during operation; the structure of the first lip 1 is consistent with the structure of the traditional skeleton oil seal lip, the first lip 1 seals with the first shaft 7, and the first lip 1 The oil film is formed at the contact between the shape and the first shaft 7. Under the action of the second lip 2 and the third lip 3, the abrasive cloth effect does not occur during the working process of the first lip. In the closed gearbox 9, the first The first bearing 5 is installed on the position of the bearing seat 6, and the first oil seal skeleton 4, the first lip 1, the third lip 3, the first lip 2 and the first Bearing 5, the second bearing seat 11 is installed with the second bearing 12, the end of which is the first bearing end cover 13, the first shaft 7 is installed in the holes of the first bearing 5 and the second bearing 12 from the first shaft end cover 14 Out of the shaft, the first gear 10 and the first shaft 7 are fixedly installed in the middle of the first shaft 7, and the lubricating oil 8 is added to the 1/3 of the first gear in the submerged transmission system in the gearbox 9, and the fifth lip is also 20 and the sixth lip 21 have the same structural features, and there are randomly arranged concave and absorbing elastic holes at the lip part and the shape of the second shaft 23 where the sealing and lubrication work effectively, all relying on the concave shape of the lip part and the The absorbing elastic holes are used to absorb and contain various particles. The fifth lip 20 and the sixth lip 21 form an oil film in contact with the second shaft 23. The concave shape of the sixth lip 21 and the diameter of the absorbing elastic holes 20 microns, randomly arranged in contact with the second axis 23, and the concave shape and the absorption type elastic hole surface The area accounts for 1/4 of the area of the oil film produced at the contact point with the second shaft 23; the concave shape and the diameter of the absorbing elastic hole on the fifth lip 20 are 10 to 30 microns, and are randomly arranged in the same position as the sixth lip 21 At the contact point of the second shaft 23, the surface area of the concave shape and the absorption type elastic hole accounts for 1/6 of the area of the oil film generated at the contact point with the second shaft 23; various particles are adsorbed and contained in the concave shape and the absorption type elasticity during the working process In the hole, the second shaft 23 does not rub against the particles, so the emery cloth effect cannot occur, and the lips do not damage the second shaft 23 during operation; the structure of the fourth lip 19 is the same as that of the traditional skeleton oil seal lip structure Consistent, the fourth lip 19 is sealed with the second shaft 23, and an oil film is formed at the contact between the shape of the fourth lip 19 and the second shaft 23. Under the action of the sixth lip 21 and the fifth lip 20, the fourth lip 19 The emery cloth effect does not occur during the working process. In the closed gearbox 9, the third bearing 15 is installed on the fourth bearing seat 16, and the second oil seal is sequentially installed between the third bearing 15 and the second shaft end cover 17. The skeleton 18, the sixth lip 21, the fifth lip 20, the fourth lip 19, the fourth lip 19 is adjacent to the second shaft end cover 17, and the fourth bearing seat 24 is installed with the fourth bearing 25 and other The end part is the second bearing end cover 26, the second shaft 23 is installed in the holes of the third bearing 15 and the fourth bearing 25, and the shaft is output from the second shaft end cover 17, and the second gear is fixedly installed in the middle of the second shaft 23 , and meshes with the first gear 10. In the airtight gearbox 9 during use, the second shaft 23 drives the second gear 22, the third bearing 15, and the fourth bearing 25 to rotate, the second gear 22 drives the first gear 10 to rotate, and the first gear 10 drives the first shaft 7. The first bearing 5 and the second bearing 12 rotate, the first bearing 5, the first shaft 7, the first gear 10, the second bearing 12, the second shaft 23, the second gear 22, the third bearing 15, the fourth The bearing 25 will drive the lubricating oil 8 to splash in the gearbox 9. The long-term continuous high-speed and high-temperature sliding contact between the bearing and the shaft and the skeleton oil seal will produce particulate matter during operation. When it reaches the second lip 2, the granular matter is absorbed and contained, and there is no effective friction with the shaft, and the emery cloth effect cannot occur. After a long time of operation, some granular matter makes the third lip 3 adsorption and containment invalid. Where the three lips 3 affect the lubricating and sealing position, there will be a small amount of effective friction with the shaft, and the abrasive cloth effect will also occur, but the abrasive cloth effect is very weak to the shaft damage, and the formation time of the strain effect will be prolonged for a very long time , the granular matter will basically not migrate to the position of the first lip 1, thus ensuring the effective sealing of the first lip 1, and at the same time, the granular matter reaches the sixth lip 21 with the lubricating oil 8, and the granular matter is Adsorption and containment, no effective friction with the shaft, the same abrasive cloth effect can not occur, long-term operation, some particulate matter makes the fifth lip 20 adsorption and inclusive failure to reach the fourth lip 19 to affect the position of the lubrication seal, There will be a small amount of effective friction with the shaft, and the abrasive cloth effect will also occur, but the damage to the shaft by the abrasive cloth effect is very weak, and the formation time of the strain effect will be prolonged for a very long time, and the granular substances will basically not migrate to the second stage. The position of the four lip 19 ensures the effective sealing of the fourth lip 19, realizes the high life of the skeleton oil seal, ensures the environmental work requirements in the production process, and realizes the all-weather maintenance-free long-term stability of the power transmission device of the reduction box under harsh conditions Work.

Implementation mode 2

The oil seal device consists of a first oil seal frame 4, a first lip 1, a second lip 2, a third lip 3, a first bearing 5, a second bearing 12, a first bearing seat 6, and a second bearing seat 11 , first shaft 7, lubricating oil 8, gearbox 9, first gear 10, first bearing end cover 13, first output shaft end cover 14, third bearing 15, third bearing housing 16, second output shaft end Cover 17, second oil seal frame 18, fourth lip 19, fifth lip 20, sixth lip 21, second gear 22, second shaft 23, fourth bearing seat 24, fourth bearing 25 and the first Two bearing end covers 26; the second lip 2 and the third lip 3 have the same structural features, and the concave and absorbing elastic parts are randomly arranged on the lip part and the first shaft 7 to seal and lubricate effectively. The holes rely on the concave shape of the lips and the absorbing elastic holes to absorb and contain various particles. The second lip 2 and the third lip 3 form an oil film at the contact with the first shaft 7, and the second lip is concave The diameter of the shape and absorption type elastic holes is 50 microns, randomly arranged at the contact with the first shaft 7, and the surface area of the concave shape and absorption type elastic holes accounts for 1/3 of the area of the oil film generated at the contact with the first shaft 7; The diameter of the concave shape and the absorption type elastic hole on the third lip 3 is 30 microns, which is randomly arranged at the contact with the first shaft 7 like the second lip 2, and the surface area of the concave shape and the absorption type elastic hole accounts for 1/5 of the area of the oil film is generated at the contact of the first shaft 7; various particles are adsorbed and contained in the concave shape and the absorbing elastic hole during the working process, and the first shaft 7 does not rub against the particles, so the emery cloth effect cannot occurred, and the lips did not damage the first shaft 7 during operation; the structure of the first lip 1 is consistent with the structure of the traditional skeleton oil seal lip, the first lip 1 seals with the first shaft 7, and the first lip 1 The oil film is formed at the contact between the shape and the first shaft 7. Under the action of the second lip 2 and the third lip 3, the abrasive cloth effect does not occur during the working process of the first lip. In the closed gearbox 9, the first The first bearing 5 is installed on the position of the bearing seat 6, and the first oil seal skeleton 4, the first lip 1, the third lip 3, the first lip 2 and the first Bearing 5, the second bearing seat 11 is installed with the second bearing 12, the end of which is the first bearing end cover 13, the first shaft 7 is installed in the holes of the first bearing 5 and the second bearing 12 from the first shaft end cover 14 Out of the shaft, the first gear 10 and the first shaft 7 are fixedly installed in the middle of the first shaft 7, and the lubricating oil 8 is added to the 1/3 of the first gear in the submerged transmission system in the gearbox 9, and the fifth lip is also 20 and the sixth lip 21 have the same structural features, and there are randomly arranged concave and absorbing elastic holes at the lip part and the shape of the second shaft 23 where the sealing and lubrication work effectively, all relying on the concave shape of the lip part and the The absorbing elastic holes are used to absorb and contain various particles. The fifth lip 20 and the sixth lip 21 form an oil film in contact with the second shaft 23. The concave shape of the sixth lip 21 and the diameter of the absorbing elastic holes 20~50 microns, randomly arranged in contact with the second axis 23, and the concave shape and suction The surface area of the nano-type elastic hole accounts for 1/3 of the area of the oil film generated at the contact point with the second shaft 23; the concave shape and the diameter of the absorption-type elastic hole on the fifth lip 20 are 30 microns, which are randomly arranged like the sixth lip 21 In the contact with the second shaft 23, the surface area of the concave shape and the absorption type elastic hole accounts for 1/5 of the area of the oil film generated at the contact with the second shaft 23; various particles are adsorbed and contained in the concave shape and absorption during the working process In the type elastic hole, the second shaft 23 does not rub against the particles, so the emery cloth effect cannot occur, and the lips do not damage the second shaft 23 during operation; the structure of the fourth lip 19 is the same as that of the traditional skeleton oil seal lip The mouth structure is consistent, the fourth lip 19 is sealed with the second shaft 23, and an oil film is formed at the contact between the shape of the fourth lip 19 and the second shaft 23. Under the action of the sixth lip 21 and the fifth lip 20, the fourth lip 19 The emery cloth effect does not occur during the working process of the lip 19. In the closed gearbox 9, the third bearing 15 is installed on the fourth bearing seat 16, and the third bearing 15 is arranged in turn between the third bearing 15 and the second shaft end cover 17. The second oil seal skeleton 18, the sixth lip 21, the fifth lip 20, the fourth lip 19, the fourth lip 19 is adjacent to the second output shaft end cover 17, and the fourth bearing seat 24 is installed with the fourth bearing 25 Its end is the second bearing end cover 26, the second shaft 23 is installed in the holes of the third bearing 15 and the fourth bearing 25, and the shaft is output from the second output shaft end cover 17, and the second gear is fixedly installed on the second shaft 23 in the middle, and meshes with the first gear 10. In the airtight gearbox 9 during use, the second shaft 23 drives the second gear 22, the third bearing 15, and the fourth bearing 25 to rotate, the second gear 22 drives the first gear 10 to rotate, and the first gear 10 drives the first shaft 7. The first bearing 5 and the second bearing 12 rotate, the first bearing 5, the first shaft 7, the first gear 10, the second bearing 12, the second shaft 23, the second gear 22, the third bearing 15, the fourth The bearing 25 will drive the lubricating oil 8 to splash in the gearbox 9. The long-term continuous high-speed and high-temperature sliding contact between the bearing and the shaft and the skeleton oil seal will produce particulate matter during operation. When it reaches the second lip 2, the granular matter is absorbed and contained, and there is no effective friction with the shaft, and the emery cloth effect cannot occur. After a long time of operation, some granular matter makes the third lip 3 adsorption and containment invalid. Where the three lips 3 affect the lubricating and sealing position, there will be a small amount of effective friction with the shaft, and the abrasive cloth effect will also occur, but the abrasive cloth effect is very weak to the shaft damage, and the formation time of the strain effect will be prolonged for a very long time , the granular matter will basically not migrate to the position of the first lip 1, thus ensuring the effective sealing of the first lip 1, and at the same time, the granular matter reaches the sixth lip 21 with the lubricating oil 8, and the granular matter is Adsorption and containment, no effective friction with the shaft, the same abrasive cloth effect can not occur, long-term operation, some particulate matter makes the fifth lip 20 adsorption and inclusive failure to reach the fourth lip 19 to affect the position of the lubrication seal, There will be a small amount of effective friction with the shaft, and the abrasive cloth effect will also occur, but the damage to the shaft by the abrasive cloth effect is very weak, and the formation time of the strain effect will be prolonged for a very long time, and the granular substances will basically not migrate to the second stage. The position of the four lip 19 ensures the effective sealing of the fourth lip 19, realizes the high life of the skeleton oil seal, ensures the environmental work requirements in the production process, and realizes the all-weather maintenance-free long-term stability of the power transmission device of the reduction box under harsh conditions Work.

Implementation mode 3

The oil seal device consists of a first oil seal frame 4, a first lip 1, a second lip 2, a third lip 3, a first bearing 5, a second bearing 12, a first bearing seat 6, and a second bearing seat 11 , first shaft 7, lubricating oil 8, gearbox 9, first gear 10, first bearing end cover 13, first output shaft end cover 14, third bearing 15, third bearing housing 16, second output shaft end Cover 17, second oil seal frame 18, fourth lip 19, fifth lip 20, sixth lip 21, second gear 22, second shaft 23, fourth bearing seat 24, fourth bearing 25 and the first Two bearing end covers 26; the second lip 2 and the third lip 3 have the same structural features, and the concave and absorbing elastic parts are randomly arranged on the lip part and the first shaft 7 to seal and lubricate effectively. The holes rely on the concave shape of the lips and the absorbing elastic holes to absorb and contain various particles. The second lip 2 and the third lip 3 form an oil film at the contact with the first shaft 7, and the second lip is concave The diameter of the shape and absorption type elastic holes is 30 microns, randomly arranged at the contact with the first shaft 7, and the surface area of the concave shape and absorption type elastic holes accounts for 1/3 of the area of the oil film generated at the contact with the first shaft 7; The diameter of the concave shape and the absorption type elastic hole on the third lip 3 is 20 microns, which is randomly arranged at the contact with the first shaft 7 like the second lip 2, and the surface area of the concave shape and the absorption type elastic hole accounts for 1/5 of the area of the oil film is generated at the contact of the first shaft 7; various particles are adsorbed and contained in the concave shape and the absorbing elastic hole during the working process, and the first shaft 7 does not rub against the particles, so the emery cloth effect cannot occurred, and the lips did not damage the first shaft 7 during operation; the structure of the first lip 1 is consistent with the structure of the traditional skeleton oil seal lip, the first lip 1 seals with the first shaft 7, and the first lip 1 The oil film is formed at the contact between the shape and the first shaft 7. Under the action of the second lip 2 and the third lip 3, the abrasive cloth effect does not occur during the working process of the first lip. In the closed gearbox 9, the first The first bearing 5 is installed on the position of the bearing seat 6, and the first oil seal skeleton 4, the first lip 1, the third lip 3, the first lip 2 and the first Bearing 5, the second bearing seat 11 is installed with the second bearing 12, the end of which is the first bearing end cover 13, the first shaft 7 is installed in the holes of the first bearing 5 and the second bearing 12 from the first shaft end cover 14 Out of the shaft, the first gear 10 and the first shaft 7 are fixedly installed in the middle of the first shaft 7, and the lubricating oil 8 is added to the 1/3 of the first gear in the submerged transmission system in the gearbox 9, and the fifth lip is also 20 and the sixth lip 21 have the same structural features, and there are randomly arranged concave and absorbing elastic holes at the lip part and the shape of the second shaft 23 where the sealing and lubrication work effectively, all relying on the concave shape of the lip part and the The absorbing elastic holes are used to absorb and contain various particles. The fifth lip 20 and the sixth lip 21 form an oil film in contact with the second shaft 23. The concave shape of the sixth lip 21 and the diameter of the absorbing elastic holes is 35 microns, randomly arranged in contact with the second axis 23, and the concave shape and the absorption type elastic hole surface The area accounts for 1/3 of the area of the oil film produced at the contact with the second shaft 23; the diameter of the concave shape and the absorption type elastic hole on the fifth lip 20 is 25 microns, and is randomly arranged on the same as the sixth lip 21 and the second The contact point of the shaft 23, and the surface area of the concave shape and the absorption type elastic hole accounts for 1/5 of the area of the oil film generated at the contact point with the second shaft 23; various particles are adsorbed and contained in the concave shape and the absorption type elastic hole during the working process , the second shaft 23 does not rub against the particles, so the emery cloth effect cannot occur, and the lips do not damage the second shaft 23 during operation; the structure of the fourth lip 19 is consistent with the structure of the traditional skeleton oil seal lip, The fourth lip 19 is sealed with the second shaft 23, and an oil film is formed at the contact between the shape of the fourth lip 19 and the second shaft 23. Under the action of the sixth lip 21 and the fifth lip 20, the fourth lip 19 works The emery cloth effect does not occur during the process. In the closed gearbox 9, the third bearing 15 is installed on the fourth bearing seat 16, and the second oil seal frame 18 is sequentially arranged between the third bearing 15 and the second shaft end cover 17. , the sixth lip 21, the fifth lip 20, the fourth lip 19, the fourth lip 19 is adjacent to the second shaft end cover 17, and the fourth bearing seat 24 is installed on the end of the fourth bearing 25 The second bearing end cover 26 and the second shaft 23 are installed in the holes of the third bearing 15 and the fourth bearing 25 to output the shaft from the second output end cover 17, the second gear is fixedly installed in the middle of the second shaft 23, and Engage with the first gear 10. In the airtight gearbox 9 during use, the second shaft 23 drives the second gear 22, the third bearing 15, and the fourth bearing 25 to rotate, the second gear 22 drives the first gear 10 to rotate, and the first gear 10 drives the first shaft 7. The first bearing 5 and the second bearing 12 rotate, the first bearing 5, the first shaft 7, the first gear 10, the second bearing 12, the second shaft 23, the second gear 22, the third bearing 15, the fourth The bearing 25 will drive the lubricating oil 8 to splash in the gearbox 9. The long-term continuous high-speed and high-temperature sliding contact between the bearing and the shaft and the skeleton oil seal will produce particulate matter during operation. When it reaches the second lip 2, the granular matter is absorbed and contained, and there is no effective friction with the shaft, and the emery cloth effect cannot occur. After a long time of operation, some granular matter makes the third lip 3 adsorption and containment invalid. Where the three lips 3 affect the lubricating and sealing position, there will be a small amount of effective friction with the shaft, and the abrasive cloth effect will also occur, but the abrasive cloth effect is very weak to the shaft damage, and the formation time of the strain effect will be prolonged for a very long time , the granular matter will basically not migrate to the position of the first lip 1, thus ensuring the effective sealing of the first lip 1, and at the same time, the granular matter reaches the sixth lip 21 with the lubricating oil 8, and the granular matter is Adsorption and containment, no effective friction with the shaft, the same abrasive cloth effect can not occur, long-term operation, some particulate matter makes the fifth lip 20 adsorption and inclusive failure to reach the fourth lip 19 to affect the position of the lubrication seal, There will be a small amount of effective friction with the shaft, and the abrasive cloth effect will also occur, but the damage to the shaft by the abrasive cloth effect is very weak, and the formation time of the strain effect will be prolonged for a very long time, and the granular substances will basically not migrate to the second stage. The position of the four lip 19 ensures the effective sealing of the fourth lip 19, realizes the high life of the skeleton oil seal, ensures the environmental work requirements in the production process, and realizes the all-weather maintenance-free long-term stability of the power transmission device of the reduction box under harsh conditions Work.

Claims (1)

1. the device of lip skeleton-type oil seal more than a kind, it is characterized in that a kind of multiple lips different structure are combined into the skeleton-type oil seal device of many lips parts, The oil-sealing arrangement is by the first oil tight skeleton (4), first lip (1), second lip (2), 3rd lip (3), clutch shaft bearing (5), second bearing (12), clutch shaft bearing seat (6), second bearing support (11), first axle (7), lubricant oil (8), gear-box (9), first gear (10), clutch shaft bearing end cap (13), first goes out hubcap (14), 3rd bearing (15), 3rd bearing support (16), second goes out hubcap (17), second oil tight skeleton (18), 4th lip (19), 5th lip (20), 6th lip (21), and second gear (22), second axle (23), 4th bearing support (24), 4th bearing (25) and the second bearing (ball) cover (26) composition, second lip (2) is identical with the 3rd lip (3) its structure characteristic, the equal random arrangement in profile place effectively worked at lip position and the first axle (7) seal lubrication has in spill and receives type springhole, all rely on lip position concave profile and receive type springhole to adsorb and contain various particle, second lip (2) and the 3rd lip (3) profile and the first axle (7) contacting point produce oil film, second lip (2) is gone up concave profile and is received the diameter of type springhole to be 20 ~ 50 microns, random arrangement in the first axle (7) contacting point, and concave profile and receive type springhole surface area to account for produce 1/3 ~ 1/4 of film area with the first axle (7) contacting point, 3rd lip (3) is gone up concave profile and is received the diameter of type springhole to be 10 ~ 30 microns, with the second lip (2) same random arrangement in the first axle (7) contacting point, and concave profile and receive type springhole surface area to account for produce 1/5 ~ 1/6 of film area with the first axle (7) contacting point, various granular absorption and be included in concave profile and receive in type springhole in working procedure, the first axle (7) and granular substance do not produce friction, and such emery cloth effect can not occur, and in running, lip is all to the first axle (7) not damage, first lip (1) structure is consistent with traditional framework type oil seal lip mouth structure, first lip (1) and the first axle (7) seal, first lip (1) profile and the first axle (7) contacting point produce oil film, under the effect of the second lip (2) with the 3rd lip (3), emery cloth effect is there is not in first lip working procedure yet, in airtight gear-box (9), clutch shaft bearing seat (6) position is installed clutch shaft bearing (5), it sets gradually the first oil tight skeleton (4) near going out hubcap (14) side end, first lip (1), 3rd lip (3), first lip (2) is then clutch shaft bearing (5), second bearing support (11) position being installed the second bearing (12) its end is clutch shaft bearing end cap (13), first axle (7) is installed on clutch shaft bearing (5) and the second bearing (12) Kong Zhongcong first goes out shaft in hubcap (14), first gear (10) and the first axle (7) are fixedly installed in the first axle (7) middle part, lubricant oil (8) is added into the first gear 1/3 place in submergence transmission system in gear-box (9), same 5th lip (20) is identical with the 6th lip (21) its structure characteristic, the equal random arrangement in profile place effectively worked at lip position and the second axle (23) seal lubrication has in spill and receives type springhole, all rely on lip position concave profile and receive type springhole to adsorb and contain various particle, 5th lip (20) and the 6th lip (21) profile and the second axle (23) contacting point produce oil film, 6th lip (21) is gone up concave profile and is received the diameter of type springhole to be 20 ~ 50 microns, random arrangement in the second axle (23) contacting point, and concave profile and receive type springhole surface area to account for produce 1/3 ~ 1/4 of film area with the second axle (23) contacting point, 5th lip (20) is gone up concave profile and is received the diameter of type springhole to be 10 ~ 30 microns, with the 6th lip (21) same random arrangement in the second axle (23) contacting point, and concave profile and receive type springhole surface area to account for produce 1/5 ~ 1/6 of film area with the second axle (23) contacting point, various granular absorption and be included in concave profile and receive in type springhole in working procedure, the second axle (23) and granular substance do not produce friction, and such emery cloth effect can not occur, and in running, lip is all to the second axle (23) not damage, 4th lip (19) structure is consistent with traditional framework type oil seal lip mouth structure, 4th lip (19) and the second axle (23) seal, 4th lip (19) profile and the second axle (23) contacting point produce oil film, under the effect of the 6th lip (21) with the 5th lip (20), emery cloth effect is there is not in 4th lip (19) working procedure yet, in airtight gear-box (9), the 3rd bearing (15) is installed in 4th bearing support (16) position, go out between hubcap (17) to set gradually the second oil tight skeleton (18) at the 3rd bearing (15) and second, 6th lip (21), 5th lip (20), 4th lip (19), 4th lip (19) is adjacent is second go out hubcap (17), it is the second bearing (ball) cover (26) that the 4th bearing (25) its end is installed in 4th bearing support (24) position, second axle (23) is installed on the 3rd bearing (15) and the 4th bearing (25) Kong Zhongcong second goes out shaft in hubcap (17), second gear (22) is fixedly installed in the second axle (23) middle part, and engage in the first gear (10).