JP4464669B2 - Wind speed booster - Google Patents

Description

  The present invention relates to a step-up gear for wind power generation.

  Generally, a wind turbine for wind power generation is used for wind power generation. In wind turbines for wind power generation, blades (blades) rotate by receiving wind, and this rotation is transmitted to the gearbox through the input shaft (blade shaft), and further, power is generated from the gearbox through the output shaft. It is transmitted to the machine. That is, a speed increaser is used for wind power generation. And there exists a thing using a planetary gear mechanism as a gearbox.

By the way, in the case of a wind power step-up gear having a long service life, it is common to use a clearance seal without using an oil seal for the seal of the rotating shaft. However, in this case, the oil level of the gearbox (case) cannot be arranged above the clearance seal portion. Therefore, there has been a disadvantage that the upper side gear meshing portion is not sufficiently lubricated. Therefore, conventionally, there has been a sun gear or the like in which a through hole is provided, and through this through hole, lubricating oil is supplied to a gear meshing portion where lubrication is not sufficiently performed (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 6-14597 (page 2-3, FIG. 2)

  However, when a through hole is provided in the sun gear, the strength of the sun gear is lowered by this through hole, and the durability is inferior. In addition, a process for providing a complex through-hole in the sun gear is required, resulting in an increase in manufacturing processes, inferior productivity, and high cost.

  The present invention has been made to solve the above-mentioned conventional drawbacks, and the object thereof is to sufficiently supply lubricating oil to gears such as planetary gears to be used. It is to provide a speed increasing device for wind power generation having a simple configuration.

Accordingly, the wind power booster according to the first aspect includes the input side gear mechanism 1 and the output side gear mechanism 2 in the speed increasing case 10, and the input side gear mechanism 1 has an input shaft arranged in a horizontal direction. A carrier 9 that rotates by rotation of 19, a planetary gear 7 that is attached to the carrier 9 and rotates while meshing with the ring gear 8 by rotation of the carrier 9, and rotation of the planetary gear 7 that meshes with the planetary gear 7. And the output side gear mechanism 2 is a wind-powered gearbox having an output shaft 4 that is rotated by the rotation of the sun gear 6 and that is disposed in the horizontal direction. a first lubricating oil supply means 41 for supplying lubricating oil to the sun gear 6, and a second lubricating oil supply means 42 for supplying lubricating oil between the planetary gear 7 and ring gear 8, the first lubricating oil supply means 41, the upper end By injecting the lubricating oil from the first injection port 47 which is continuously provided on the lower end portion of the lubricating oil supply pipe 45 disposed up gear case 10 is inserted through the serial gearbox casing 10, disposed in the carrier 9 has been supplied to the carrier hole 52 by profit Namerayu above sun gear 6, the second lubricating oil supply means 42, the second injection port 48 is opened in the lubricating oil supply pipe 45, up gear case 10 It is characterized in Rukoto to inject lubricating oil between the planetary gear and the ring gear 8 in the upper part of the inner.

In the speed increasing device for wind power generation according to the first aspect, the lubricating oil can be supplied to the sun gear 6 by the first lubricating oil supply means 41, whereby the sun gear 6 can be lubricated. Further, since the lubricating oil is injected from the first injection port 47 and supplied to the sun gear 6 disposed in the carrier 9 from the carrier hole 52, the lubricating oil is surely applied to the sun gear 6. Can be supplied. And since the carrier hole 52 formed at the time of shaping | molding of the carrier 9 is used, without providing a through-hole newly in the sun gear 6, a through-hole process operation can be abbreviate | omitted. Further, the second lubricating oil supply means 42 can supply lubricating oil between the planetary gear 7 and the ring gear 8, whereby the planetary gear 7 and the ring gear 8 can be lubricated. Lubricating oil is injected between the planetary gear 7 and the ring gear 8 in the upper part of the speed increasingr case 10 from the second injection port 48 opened in the lubricating oil supply pipe 45 disposed in the speed increasing case 10. Therefore, the lubricating oil can be reliably supplied between the planetary gear 7 and the ring gear 8 at the upper portion in the speed increaser case 10.

The speed increasing device for wind power generation according to claim 2 includes an input side gear mechanism 1 and an output side gear mechanism 2 in a speed increasing case 10, and the input side gear mechanism 1 is an input shaft 19 arranged in a horizontal direction. , A planetary gear 7 attached to the carrier 9 and rotating while meshing with the ring gear 8 by the rotation of the carrier 9, and meshing with the planetary gear 7 and rotating the planetary gear 7. A rotating sun gear 6, and the output side gear mechanism 2 is a wind power speed-up gear having an output shaft 4 that is rotated by the rotation of the sun gear 6 and that is arranged in the horizontal direction. Lubricating oil is supplied to the second lubricating oil supplying means 42 for supplying lubricating oil between the gear 7 and the ring gear 8, and the meshing start portion 40 of the output side gear mechanism 2 disposed on the upper side in the speed increaser case 10. Third lubricating oil supply means 4 for supplying With the door, the second lubricating oil supply means 42, the second injection port 48 which upper portion is opened in the lubricating oil supply pipe 46 disposed in the insertion has been up gear case 10 to the gearbox casing 10 Then, lubricating oil is injected between the planetary gear 7 and the ring gear 8 in the upper part of the speed increasingr case 10, and the third lubricating oil supply means 43 is connected to the lower end of the lubricating oil supply pipe 46. The lubricating oil is injected from the third injection port 49 to the meshing start portion 40 of the output side gear mechanism 2 disposed on the upper side in the speed increaser case 10 .

In the speed increasing device for wind power generation according to the second aspect, the lubricating oil can be supplied between the planetary gear 7 and the ring gear 8 by the second lubricating oil supply means 42, whereby the planetary gear 7 and the ring gear are supplied. 8 can be lubricated. Lubricating oil is injected between the planetary gear 7 and the ring gear 8 in the upper part of the speed increasingr case 10 from the second injection port 48 opened in the lubricating oil supply pipe 46 disposed in the speed increasing case 10. Therefore, the lubricating oil can be reliably supplied between the planetary gear 7 and the ring gear 8 at the upper portion in the speed increaser case 10. In addition, the third lubricating oil supply means 43 meshes with the meshing start portion 40 (for example, the gear portion 30 of the output shaft 4) of the output side gear mechanism 2 disposed on the upper side in the speed increaser case 10. Lubricating oil can be supplied to the second gear 26 and the gear portion 30 of the output shaft 4 can be lubricated. Further, since the lubricating oil is injected to the meshing start portion 40 from the third injection port 49 opened in the lubricating oil supply pipe 46 arranged in the speed increaser case 10, the lubricating oil is reliably supplied to the meshing start portion 40. Can be supplied to.

  In the speed increasing device for wind power generation according to claim 3, the output shaft 4 is pivotally supported at one end by the bearing 34, and is provided in the speed increasing case 10 from the fourth injection port 58 opened in the lubricating oil supply pipe 46. Lubricating oil is injected into the bearing 34 in the upper part.

  In the wind power step-up gear of the third aspect, the lubricating oil is injected from the fourth injection port 58 provided in the lubricating oil supply pipe 46 to the bearing 34 pivotally supporting one end of the output shaft 4. The bearing 34 can be lubricated. In addition, the fourth injection port 58 is opened in the lubricating oil supply pipe 46 where the second injection port 48 (an injection port for injecting lubricating oil between the planetary gear 7 and the ring gear 8) is opened. Thus, the lubricating oil supply pipe 46 can be shared.

According to the wind power generator of the first aspect, the sun gear can be lubricated by the first lubricating oil supply means. For this reason, the sun gear does not become poorly lubricated, and the sun gear and the planetary gear meshing with the sun gear mesh smoothly with each other over a long period of time, resulting in a speed increaser with excellent durability. Further, it is possible to supply surely lubricant to the sun gear, and improving the reliability of the sun gear lubrication, mesh with more or slip, lubricant oil level is lower large wind power generation gearbox of Ideal for. And since a carrier hole is used without providing a through-hole in a sun gear, the fall of the intensity | strength of a sun gear can be prevented. Further, the planetary gear and the ring gear can be lubricated by the second lubricating oil supply means. For this reason, the planetary gear and the ring gear do not have poor lubrication, and mesh with each other smoothly over a long period of time, resulting in a speed increaser with excellent durability. In addition, since the lubricating oil can be reliably supplied between the planetary gear and the ring gear at the upper part in the gearbox case, the lubrication reliability between the planetary gear and the ring gear is improved, and meshing is performed more smoothly. It is most suitable for the gearbox for large wind power generation with low oil level.

According to the speed increasing device for wind power generation of the second aspect, the planetary gear and the ring gear can be lubricated by the second lubricating oil supply means. For this reason, the planetary gear and the ring gear do not have poor lubrication, and mesh with each other smoothly over a long period of time, resulting in a speed increaser with excellent durability. Further, it is possible to reliably supplied at the top of the speed increaser case the lubricant between the planet gears and the ring gear, and improving the reliability of the lubrication of the planetary gear and the ring gear, meshes with the more or slip However, it is most suitable for a large-scale wind power booster with a low oil level. Further, the third lubricating oil supply means can supply the lubricating oil to a meshing start portion between the gear portion of the output shaft and the gear portion meshed with the gear portion (for example, the second gear of the output side gear mechanism). For this reason, the gear part of the output shaft and the gear part meshing with the gear part do not become poorly lubricated, and the gear part smoothly meshes over a long period of time, resulting in a speed increaser with excellent durability. Further, since the lubricating oil can be reliably supplied to the upper meshing start portion in the speed increaser case, the lubrication reliability of these meshing portions is improved, and the meshing of the lubricating oil is further improved. It is most suitable for large wind power gearboxes with low oil levels.

  According to the step-up gear for wind power generation of the third aspect, since the lubricating oil is injected from the fourth injection port established in the lubricating oil supply pipe to the bearing pivotally supporting one end portion of the output shaft, Lubrication can be performed. For this reason, the output shaft can rotate smoothly over a long period of time, and a stable output can be obtained. In addition, since the fourth injection port is opened in the lubricating oil supply pipe in which the second injection port (the injection port for supplying the lubricating oil between the planetary gear and the ring gear) is opened, the lubricating oil supply Piping can be shared. For this reason, the configuration can be simplified and the cost can be reduced.

  Next, a specific embodiment of the wind power booster of the present invention will be described in detail with reference to the drawings. 1 and 2 show a cross-sectional view of a wind power step-up gear. The wind power speed increaser includes an input side gear mechanism (low speed side gear mechanism) 1 and an output side gear mechanism (high speed side gear mechanism) 2, and is connected to a shaft portion of a blade portion (not shown). The part receives the wind and rotates, and the rotational force is transmitted to the output shaft 4.

  The input side gear mechanism 1 includes a sun gear 6 fitted on the shaft 5, a plurality of (in this case, three as shown in FIG. 3) planetary gears 7 meshed with the sun gear 6, and the planetary gears. A ring gear 8 that meshes with the gear 7 and a carrier 9 that rotatably supports the planetary gears 7. In this case, the shaft 5 is rotatably supported by the speed increaser case 10, and the sun gear 6 is rotatably fitted on one end side thereof. The sun gear 6 includes a cylindrical main body portion 6a and tooth portions 6b provided on the outer peripheral surface of the cylindrical main body portion 6a.

  Further, the carrier 9 has a pair of disk-shaped substrate portions 11 and 12, and the substrate portions 11 and 12 are arranged at a predetermined pitch (in this case, a pitch of about 120 degrees) along the circumferential direction as shown in FIG. It is connected by connecting portions 14. And the said planetary gear 7 is arrange | positioned between the connection parts 14 and 14 which adjoin along the circumferential direction. That is, as shown in FIGS. 1 and 2, a shaft member 15... Is fixed between the substrate portions 11 and 12, and the planetary gear 7 is externally attached to the shaft member 15. Fit. Incidentally, the speed increaser case 10 has a first portion 17 on the carrier 9 side and a second portion 18 on the output shaft 4 side. The carrier 9 is connected to the first portion 17 via bearings 20 and 21. It is supported rotatably. Further, one end of the shaft 5 is fixed to the one substrate portion 11 and the other end is rotatably supported on the outer end wall 22 side of the second portion 18 via a bearing. A cylindrical portion 13 protruding outward from one substrate portion 11 is provided, and a shaft portion of a blade portion (not shown) is connected to the cylindrical portion 13. For this reason, the cylindrical portion 13, a part of the substrate 12 of the carrier 9, and the shaft 5 can be called an input shaft 19. The ring gear 8 is provided on the inner peripheral surface of the first portion 17. Seal members S and S are disposed on the outer peripheral side of the cylindrical portion 13 and the outer peripheral side of the other end portion of the shaft 5, respectively.

  In the input side gear mechanism 1 configured as described above, when the blade portion (not shown) rotates against the wind, the input shaft 13 rotates in the direction of the arrow A1 in FIGS. As the input shaft 13 rotates, the carrier 9 rotates, and the planetary gears 7... Rotate while revolving around the sun gear 6 while meshing with the ring gear 8. Thereby, the sun gear 6 rotates.

  Next, the output side gear mechanism (high speed side gear mechanism) 2 includes a first gear 25 that is externally fitted to the other end side of the shaft 5 via a spacer 23, and a first gear 25 that rotates by the rotation of the first gear 25. A second gear 26 and the output shaft 4 and the like which mesh with the second gear 26 and rotate by the rotation of the second gear 26. The spacer 23 is a cylindrical body that is continuous with the cylindrical main body 6a of the sun gear 6, and rotates integrally with the cylindrical main body 6a. The first gear 25 that is housed in the second portion 18 of the speed increaser case 10 is externally fixed to the spacer 23. In this case, the cylindrical main body 6a of the sun gear 6 and the spacer 23 constitute a cylindrical rotating body 33 that rotates freely on the shaft 5 via bearings 31 and 32. The first gear 25 rotates by rotating around the axis.

  The second gear 26 is externally fitted and fixed to one end portion of a shaft member 28 that is rotatably supported by the second portion 18 of the speed increaser case 10 via bearings 27 and 27. As shown in FIG. 4, the shaft member 28 is disposed in the vicinity of the output shaft 4 and is provided with a tooth portion 29 that meshes with the first gear 25. A pinion (gear part) 30 that meshes with the second gear 26 is provided at one end of the output shaft 4.

  In the output side gear mechanism 2, when the first gear 25 rotates, the shaft member 28 in which the tooth portion 29 meshes with the first gear 25 rotates. When the shaft member 28 further rotates, the second gear 26 rotates, and the output shaft 4 in which the gear portion 30 is engaged with the second gear 26 rotates. As shown in FIG. 1, the output shaft 4 is pivotally supported by a partition wall 35 that divides the first portion 17 and the second portion 18 of the speed increaser case 10 through a bearing 34 at one end thereof. The other end is pivotally supported on the outer end wall 22 of the second portion 18 via a bearing 36. The bearings 16, 20, 21, 27, 31, 32, 34, 36, etc. of the gear mechanisms 1, 2 are configured so that lubricating oil is supplied and the rotating bodies rotate smoothly.

  Therefore, in this speed up gear, if the input shaft 19 rotates as indicated by an arrow A1 in FIG. 1 when a blade portion (not shown) hits the wind, the carrier 9 rotates and the sun gear 6 rotates. . And if this sun gear 6 rotates, the rotary body 33 in which the part is comprised in the main-body part 6a of this sun gear 6 will rotate. When the rotating body 33 rotates, the output shaft 4 rotates as indicated by the arrow A2 as described above. The output shaft 4 is connected to a generator (not shown) or the like, and the generator is driven by the rotation of the output shaft to generate power.

  By the way, as shown in FIG. 1 and FIG. 4, the speed increaser includes a first lubricating oil supply means 41 that supplies lubricating oil to the sun gear 6, and a lubricating oil between the planetary gear 7 and the ring gear 8. Second lubricating oil supply means 42 for supplying oil, and third lubricating oil supply means for supplying lubricating oil to the meshing start portion 40 of the second gear 26 and the gear portion (pinion) 30 of the output shaft 4 meshing therewith. 43.

  That is, the outer pipe 44 for supplying the lubricating oil is arranged in the speed increaser case 10, and the lubricating oil supply pipes 45 and 46 connected to the outer pipe 44 are arranged inside the speed increaser case 10. As shown in FIG. 6, a first injection port 47 for supplying lubricating oil to the sun gear 6 is opened in the lubricating oil supply pipe 45, and as shown in FIG. A second injection port 48 for supplying lubricating oil between the planetary gear 7 and the ring gear 8, a third injection port 49 for supplying lubricating oil to the meshing start portion 40, and one end of the output shaft 4 A fourth injection port 58 for supplying lubricating oil to the bearing 34 that pivotally supports the shaft is opened.

  That is, as shown in FIG. 6, the lubricating oil supply pipe 45 has an upper end inserted through the upper wall 38 of the speed increaser case 10 and a lower end inserted through the partition wall 35 of the speed increaser case 10. It has a main body portion 50 and a nozzle 51 that is connected to the lower end of the main body portion 50 and opens to the substrate 12 side of the carrier 9. Incidentally, the substrate 12 of the carrier 9 is provided with a plurality of (three in this case) through holes (carrier holes) 52... Along the circumferential direction as shown in FIGS. For this reason, the lubricating oil injected from the first injection port 47 configured by the opening of the nozzle 51 is supplied to the sun gear 6 through the carrier hole 52 as indicated by an arrow B in FIG.

  As shown in FIG. 5, the lubricating oil supply pipe 46 has an upper end inserted through the upper wall 38 of the speed increaser case 10 and a lower end inserted through the partition wall 35 of the speed increaser case 10. It has the vertical main-body part 53 and the horizontal part 54 which is connected from the lower end of this main-body part 53, and protrudes in the 2nd part 18 side. And the said 2nd injection port 48 and the 4th injection port 58 are opened in the vertical main-body part 53, and the said one part of the horizontal part 54 (end part by the side of the 2nd part 18 of the gear box case 10) is the said. A third injection port 49 is opened. In this case, the second injection port 48 opens to the upper side of the first portion 17 of the speed increaser case 10 and the lubricating oil is injected (discharged) toward the first portion 17 as indicated by an arrow C in FIG. To do. For this reason, lubricating oil can be supplied between the planetary gear 7 and the ring gear 8 in the upper part of the speed increaser case 10. The second injection port 48 and the fourth injection port 58 open along the radial direction of the vertical main body 53, and the opening position of the second injection port 48 is set to one side (the first speed increasing case 10. Part 17 side), and the opening position of the fourth injection port 58 is the other side (second part 18 side of the gearbox case 10). For this reason, the lubricating oil from the fourth injection port 58 can be supplied to the bearing 34 of the output shaft 4. Further, the third injection port 49 opens toward the meshing start portion 40 between the second gear 26 and the gear portion (pinion) 30 of the output shaft 4 meshing with the second gear 26, and as shown by an arrow D in FIG. Lubricating oil is ejected (discharged) toward the meshing start portion 40. As shown in FIG. 2, a discharge pipe 55 for discharging the lubricating oil to the outside is connected to the first portion 17 of the speed increaser case 10. That is, the bottom wall 56 of the second part is inclined downward toward the first part 17, and a through hole 57 (see FIG. 1) is provided at the lower part of the partition wall 35. For this reason, the lubricating oil supplied to the second part 18 flows into the first part 17 through the through hole 57, and is discharged from the first part 17 to the outside through the discharge pipe 55. As shown in FIG. 6, the third injection port 48 may be opened in the lubricating oil supply pipe 45, and further, although not shown, the fourth injection port 58 is opened in the lubricating oil supply pipe 45. Also good.

  In the wind power booster, the first lubricating oil supply means 41 can supply the lubricating oil to the sun gear 6, whereby the sun gear 6 does not become poorly lubricated, and the sun gear 6 and the planetary gear. The gear 7 meshes smoothly over a long period of time. Further, the second lubricating oil supply means 42 can supply lubricating oil between the planetary gear 7 and the ring gear 8, whereby the planetary gear 7 and the ring gear 8 do not become poorly lubricated. Meshes smoothly over a long period of time. Further, the third lubricating oil supply means 43 can supply the lubricating oil to the meshing start portion 40 between the second gear 26 and the gear portion 30 of the output shaft 4 meshing with the second gear 26, thereby the second gear. 26 and the gear part 30 of the output shaft 4 do not have poor lubrication, and they mesh smoothly over a long period of time. Therefore, even if it is a wind power booster with a low oil level of the lubricating oil, each gear can be lubricated, and the gearbox is excellent in durability.

  Further, since the lubricating oil is injected from the first injection port 47 and supplied to the sun gear 6 disposed in the carrier 9 from the carrier hole 52, the lubricating oil is surely applied to the sun gear 6. Can be supplied. For this reason, the reliability of the lubrication of the sun gear 6 is improved and the sun gear 6 is engaged more smoothly. Furthermore, since the carrier hole 52 is used without providing a through hole in the sun gear 6, a decrease in the strength of the sun gear 6 can be prevented.

  Lubricating oil is injected between the planetary gear 6 and the ring gear 8 in the upper part of the speed increasingr case 10 from the second injection port 48 opened in the lubricating oil supply pipe 46 disposed in the speed increasing case 10. The lubricating oil can be reliably supplied between the planetary gear 7 and the ring gear 8 in the upper portion of the speed increaser case 10. For this reason, the reliability of the lubrication between the planetary gear 7 and the ring gear 8 is improved, and it is most suitable for a large-scale wind power step-up gear that meshes more smoothly and has a low oil level of lubricating oil.

  From the 3rd injection port 49 opened in the lubricating oil supply piping 46 arrange | positioned in the gear box case 10, the 2nd gearwheel 26 arrange | positioned in the upper side in the gear box case 10, and the output shaft 4 meshing with this Since the lubricating oil is injected to the meshing start portion 40 with the gear portion 30, the lubricating oil can be reliably supplied to the meshing start portion 40. For this reason, the reliability of the lubrication between the second gear 26 and the gear portion 30 of the output shaft 4 is improved, and the gear is more smoothly engaged, and is optimal for a large-scale wind power speed increaser with a low oil level of lubricating oil. .

  Further, since the lubricating oil is injected from the fourth injection port 58 opened in the lubricating oil supply pipe 46 to the bearing 34 that pivotally supports one end of the output shaft 4, the bearing 34 can be lubricated. For this reason, the output shaft 4 can rotate smoothly over a long period of time, and a stable output can be obtained. Moreover, the fourth injection port 58 is opened in the lubricating oil supply pipe 46 where the second injection port 48 (the injection port for supplying lubricating oil between the planetary gear 7 and the ring gear 8) is opened. Therefore, the lubricating oil supply pipe 46 can be shared. For this reason, the configuration can be simplified and the cost can be reduced.

Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, the number of teeth of each gear of the input side gear mechanism 1 and the output side gear mechanism 2 is arbitrary within a range in which the rotational force of the blade portion (not shown) can be transmitted to the output shaft of the output side gear mechanism 2 with a predetermined acceleration. The number of planetary gears 7 of the input side gear mechanism 1 can be arbitrarily increased or decreased. Further, it is preferable that all of the first lubricating oil supply means 41, the second lubricating oil supply means 42, and the third lubricating oil supply means 43 are provided. Of these supply means 41, 42, 43, two lubricating oils are provided. select oil supply means may be provided. Further, as the output-side gear mechanism 2 may be one that does not have a second gear 26. That is, the first gear 25 may directly mesh with the gear portion 30 of the output shaft 4. For this reason, the engagement start portion 40 to which the lubricant is supplied by the third lubricant supply means 43 may be an engagement start portion between the first gear 25 and the gear portion 30 of the output shaft 4.

It is sectional drawing which shows embodiment of the step-up gear for wind power generation of this invention. It is sectional drawing in the position where the 2nd gearwheel of the said gearbox for wind power generation appears. It is mesh | engagement explanatory drawing of the sun gear of the said gearbox for wind power generation, a planetary gear, and a ring gear. It is a Y direction arrow enlarged view of the said FIG. It is the EE line expanded sectional view of the said FIG. It is the FF line expanded sectional view of the said FIG.

Explanation of symbols

  1 .... Input side gear mechanism, 2 .... Output side gear mechanism, 4 .... Output shaft, 6 .... Sun gear, 8 .... Ring gear, 9 .... Carrier, 10 .... Speed increaser case, 19 .... Input Shaft 25 ··· First gear 26 ··· Second gear 40 · · Engagement start portion 41 · · First lubricating oil supply means 42 · · · Second lubricating oil supply means 43 · · · Third lubricating oil Supply means 45 ··· Lubricating oil supply piping 46 ·· Lubricating oil supply piping 47 ·· First injection port 48 · · Second injection port 49 · · · 3 injection port 52 · · Carrier hole 58 ..Fourth injection port

Claims (3)

The speed increasing case (10) includes an input side gear mechanism (1) and an output side gear mechanism (2). The input side gear mechanism (1) rotates the input shaft (19) arranged in the horizontal direction. , A planetary gear (7) attached to the carrier (9) and rotating while meshing with the ring gear (8) by the rotation of the carrier (9), and the planetary gear (7) And the sun gear (6) that rotates by rotation of the planetary gear (7). The output side gear mechanism (2) is rotated by rotation of the sun gear (6) and is arranged in the horizontal direction. a that the output shaft (4) increase for wind power gearbox having a ring gear and a first lubricating oil supply means for supplying a lubricating oil (41) to said sun gear (6), and the planetary gear (7) ( 8) second lubricating oil supply means (42) for supplying lubricating oil With the door, the first lubricating oil supply means (41), the lubricating oil supply pipe upper end is positioned to be inserted up gear case (10) to the gearbox casing (10) (45) first injection port which is continuously provided on the lower end portion from (47) by injecting the lubricating oil, supplied to the carrier hole (52) good profit Namerayu above sun gear disposed in a carrier (9) (6) The second lubricating oil supply means (42) is connected to the planetary gear and the ring gear from the second injection port (48) opened in the lubricating oil supply pipe (45) at the upper part in the speed increaser case (10). (8) and the wind power generation speed increaser, wherein Rukoto to inject lubricating oil between. The speed increasing case (10) includes an input side gear mechanism (1) and an output side gear mechanism (2). The input side gear mechanism (1) rotates the input shaft (19) arranged in the horizontal direction. , A planetary gear (7) attached to the carrier (9) and rotating while meshing with the ring gear (8) by the rotation of the carrier (9), and the planetary gear (7) And the sun gear (6) that rotates by rotation of the planetary gear (7). The output side gear mechanism (2) is rotated by rotation of the sun gear (6) and is arranged in the horizontal direction. that the output shaft (4) an increase for wind power gearbox having said planetary gear (7) and second lubricating oil supply means for supplying a lubricating oil (42) between the ring gear (8), increasing Output side gear mechanism (2) arranged on the upper side in the speed machine case (10) It includes third and lubricating oil supply means (43) for supplying lubricant to the meshing start portion (40) of the second lubricating oil supply means (42) has an upper end portion within the gearbox casing (10) From the second injection port (48) opened in the lubricating oil supply pipe (46) inserted and disposed in the speed increaser case (10), the planetary gear (7 ) And the ring gear (8), and the third lubricating oil supply means (43) is connected to the lower end of the lubricating oil supply pipe (46) by a third injection port (49). From the above, the lubricating oil is injected to the meshing start portion (40) of the output side gear mechanism (2) disposed on the upper side in the speed increasing device case (10) .   One end of the output shaft (4) is pivotally supported by the bearing (34), and the upper part in the speed increaser case (10) extends from the fourth injection port (58) opened in the lubricating oil supply pipe (46). The speed increasing device for wind power generation according to claim 2, wherein lubricating oil is injected to the bearing (34).