CN-122014813-A - High-bearing integrated light yaw speed reducer output end structure

CN122014813ACN 122014813 ACN122014813 ACN 122014813ACN-122014813-A

Abstract

The invention relates to the technical field of speed reducers, in particular to a high-bearing integrated light yaw speed reducer output end structure. The structure comprises a sun gear, a planet wheel shaft, a planet carrier, an output gear shaft and a supporting outer ring, wherein the output gear shaft is connected with the planet carrier in a spline fit manner, and the lower end face of the planet carrier is limited with the end face of a gear section of the output gear shaft. A raceway is arranged between the support outer ring and the planet carrier, and spherical rolling bodies and cylindrical rolling bodies are arranged between the support outer ring and the planet carrier. The sun wheel is sleeved on the locking cover, the locking rod is in threaded connection with the locking cover, and double anti-loosening is realized through the jacking screw and the limiting pin. The planet carrier is provided with an axial hole and a radial hole, and the ball track is plugged through the movable block, the positioning shaft and the set screw. And a framework oil seal is arranged between the support outer ring and the planet carrier, and static sealing rings are arranged on the other matching surfaces, so that the sealing reliability is ensured. The invention has compact structure, high integration level, strong bearing and rigidity, effectively reduces the volume and the weight, and is suitable for a fan yaw speed reducer.

Inventors

Cao Zuoyu
ZHANG SHAORUI
WANG LE
WANG JIYU
Pan Shuaijie
TAO QI
Dong Danni

Assignees

大连大重齿轮传动机械有限公司
大连华锐重工集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (10)

1. The high-bearing integrated light yaw speed reducer output end structure is characterized by comprising a sun gear (1), a planet wheel (2), a planet wheel shaft (3), a planet carrier (7), an output gear shaft (13) and a support outer ring (4); An axial stepped hole (16) is formed in the output gear shaft (13), the aperture of an upper hole section (162) of the stepped hole (16) is smaller than that of a lower hole section (161), a locking rod (9) is arranged in a penetrating mode of the upper hole section (162) of the stepped hole (16), a flange (15) is arranged at the lower end of the locking rod (9), the flange (15) is positioned in the lower hole section (161) of the stepped hole (16), a thread section (17) is arranged at the upper end of the locking rod (9), a locking cover (8) is mounted on the thread section (17) in a threaded mode, a limiting pin (14) is arranged between the locking cover (8) and the output gear shaft (13), and the locking cover (8) is circumferentially fixed with the output gear shaft (13) through the limiting pin (14); the sun gear (1) is rotationally sleeved on the locking cover (8); The output gear shaft (13) comprises a gear section (28) and a limiting section (18), the diameter of the gear section (28) is larger than that of the limiting section (18), an external spline is arranged in the circumferential direction of the limiting section (18), an internal spline is arranged on the inner side of the planet carrier (7), the planet carrier (7) is sleeved on the limiting section (18), the internal spline is in circumferential limiting fit with the external spline, and the lower end face of the planet carrier (7) is in contact limiting with the upper end face of the gear section (28); The support outer ring (4) is sleeved on the planet carrier (7), an oil passing gap is reserved between the support outer ring (4) and the planet carrier (7), an inner raceway groove is formed in the inner side of the support outer ring (4), an outer raceway groove is correspondingly formed in the outer side of the planet carrier (7), the inner raceway groove and the outer raceway groove are matched to form a raceway, rolling bodies are arranged in the raceway, and an oil path gap is formed between the rolling bodies and the raceway; An inner gear ring (19) is also arranged on the inner side of the support outer ring (4); a plurality of planet wheel shafts (3) are arranged on the planet carrier (7) around the sun wheel (1), the planet wheel shafts (3) are rotatably provided with planet wheels (2), and the planet wheels (2) are simultaneously meshed with the inner gear ring (19) supporting the outer ring (4) and the sun wheel (1).
2. The high-bearing integrated light yaw speed reducer output end structure according to claim 1, wherein the rollways comprise a cylindrical rolling body rollway and at least two spherical rolling body rollways, a first cylindrical rolling body (6) is arranged in the cylindrical rolling body rollway, and spherical rolling bodies (5) are arranged in the spherical rolling body rollway.
3. The high-bearing integrated light yaw speed reducer output end structure according to claim 2 is characterized in that an axial hole is formed in the planet carrier (7), a radial hole is formed in the planet carrier (7) at a position corresponding to the spherical raceway, the axial hole is communicated with the spherical raceway through the radial hole, a movable block (11) is arranged in the radial hole, and a positioning shaft (10) is arranged in the axial hole.
4. The high-bearing integrated light yaw speed reducer output end structure according to claim 3 is characterized in that an axial threaded hole is formed in the position, corresponding to the radial hole, of the planet carrier (7), the axial threaded hole is communicated with the radial hole, a set screw (20) is installed in the axial threaded hole, the set screw (20) abuts against the movable block (11) after being screwed, check ring grooves are formed in the two ends, corresponding to the positioning shaft (10), of the axial hole, and a first elastic check ring (21) is clamped in the check ring grooves.
5. A high-load integrated lightweight yaw reducer output structure as claimed in claim 3, characterized in that a sealing cover (12) is mounted at the lower part of the axial hole.
6. The high-bearing integrated light yaw speed reducer output end structure according to claim 1 is characterized in that two outer cylindrical raceway grooves are formed in a planet wheel shaft (3), two inner cylindrical raceway grooves are correspondingly formed in the inner side of a planet wheel (2), second cylindrical rolling bodies (29) are respectively arranged between each outer cylindrical raceway groove and the corresponding inner cylindrical raceway groove, grooves are formed in the inner side of the planet wheel (2) and between the two inner cylindrical raceway grooves, second elastic check rings (22) are respectively arranged in the grooves, and washers are respectively arranged on two axial sides of each second elastic check ring (22).
7. The high-bearing integrated light yaw speed reducer output end structure according to claim 1, wherein a counter bore is formed in the planet carrier (7) corresponding to the planet wheel shaft (3), a fixing screw (23) is arranged in the counter bore in a penetrating mode, and the fixing screw (23) is in threaded connection with the planet wheel shaft (3).
8. The output end structure of the high-bearing integrated light yaw speed reducer according to claim 1, wherein a mounting ring (24) is integrally formed on the outer side of the support outer ring (4), and mounting holes (25) are formed in the mounting ring (24).
9. The high-bearing integrated light yaw speed reducer output end structure according to claim 1 is characterized in that a framework oil seal (26) is arranged between the support outer ring (4) and the planet carrier (7), and static sealing rings are arranged between the planet carrier (7) and the output gear shaft (13), between the locking cover (8) and the output gear shaft (13) and between the planet gear shaft (3) and the planet carrier (7).
10. The high-bearing integrated light yaw speed reducer output end structure according to claim 1 is characterized in that a tightening screw (27) is installed on a flange (15) of the locking rod (9), and the tightening screw (27) abuts against the output gear shaft (13) after being screwed.

Description

High-bearing integrated light yaw speed reducer output end structure Technical Field The invention relates to the technical field of speed reducers, in particular to a high-bearing integrated light yaw speed reducer output end structure. Background The yaw speed reducers are applied to a yaw driving system of the wind driven generator, and are usually meshed with the slewing support large gear ring at the same time to drive the main engine room of the wind driven generator to rotate so as to realize the adjustment of the engine room to wind. The yaw reducer output gear receives both torque and bending moment and requires forward and reverse switching. The existing yaw speed reducer output end is mainly provided with two cone bearings and locked by nuts, the part integration level of the structure is very low, occupied space is very large due to the large bearing span, and the structure which adopts angular contact or deep groove ball bearings and fixes an output gear by bolts is few, so that the space can be effectively reduced, but the bearing capacity is insufficient, the whole rigidity is poor, and the output gear has a falling risk. With the development of wind power industry, the weight and volume requirements on the yaw speed reducer are more and more strict, and the weight and the size of the existing yaw speed reducer output end structure are basically compressed to the greatest extent although long-time use verification is carried out. On the premise of ensuring bearing capacity, the structure is innovated, and the integration degree of the output end of the speed reducer is improved, so that the weight and the volume of the speed reducer are further compressed. Disclosure of Invention In order to achieve the bearing capacity and the integration degree of the output end of the yaw speed reducer, the invention provides a high-bearing integrated light-weight yaw speed reducer output end structure. For this purpose, the invention provides the following technical scheme: an output end structure of a high-bearing integrated light yaw speed reducer comprises a sun gear, a planet wheel shaft, a planet carrier, an output gear shaft and a support outer ring; The upper end of the locking rod is provided with a thread section, a locking cover is arranged on the thread section in a thread way, a limiting pin is arranged between the locking cover and the output gear shaft, and the locking cover is circumferentially fixed with the output gear shaft through the limiting pin; the sun wheel is sleeved on the locking cover; The output gear shaft comprises a gear section and a limiting section, an external spline is arranged in the circumferential direction of the limiting section, an internal spline is arranged on the inner side of the planet carrier, the planet carrier is sleeved on the limiting section, and the internal spline is in circumferential limit fit with the external spline; the support outer ring is sleeved on the planet carrier, an oil passing gap is reserved between the support outer ring and the planet carrier, an inner raceway groove is formed in the inner side of the support outer ring, an outer raceway groove is correspondingly formed in the outer side of the planet carrier, the inner raceway groove and the outer raceway groove are matched to form a raceway, rolling bodies are arranged in the raceway, and an oil path gap is formed between the rolling bodies and the raceway; An inner gear ring is also arranged on the inner side of the support outer ring; A plurality of planet wheel shafts are arranged on the planet carrier around the sun wheel, planet wheels are rotatably arranged on the planet wheel shafts, and the planet wheels are meshed with the inner gear ring supporting the outer ring and the sun wheel simultaneously. Further, the raceways comprise a cylindrical rolling body raceway and at least two spherical rolling body raceways, a first cylindrical rolling body (the first cylindrical rolling body mainly bears radial load) is arranged in the cylindrical rolling body raceway, and spherical rolling bodies (the spherical rolling bodies bear radial and axial loads at the same time) are arranged in the spherical rolling body raceway. Further, an axial hole is formed in the planet carrier, a radial hole is formed in the planet carrier at the position corresponding to the spherical rollaway nest, the axial hole is communicated with the spherical rollaway nest through the radial hole, a movable block is arranged in the radial hole, and a positioning shaft is arranged in the axial hole. Further, the planet carrier is provided with an axial threaded hole corresponding to the radial hole, the axial threaded hole is communicated with the radial hole, a set screw is installed in the axial threaded hole, the set screw abuts against the movable block (fixes the position of the movable block) after being screwed, two ends of the axial hole corresponding to the positioning shaft are provided with check ring