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CN-224229216-U - High-speed end structure of lightweight yaw speed reducer capable of preventing bearing from falling off

CN224229216UCN 224229216 UCN224229216 UCN 224229216UCN-224229216-U

Abstract

The utility model relates to the technical field of wind power generation equipment, in particular to a high-speed end structure of a lightweight yaw speed reducer for preventing bearing from falling. The structure comprises an upper machine body, wherein the upper machine body is provided with a cylindrical machine body, the inner edge of the upper side of the machine body extends to form a first upper mounting plate, the inner edge of the machine body axially extends to form an axial sun gear hole, and a sun gear is assembled in the hole through bearing rotation. The inner wall of the axial sun gear hole is provided with a check ring groove, an elastic check ring and an upper baffle surface, the bearing outer ring is axially limited, the sun gear is provided with a shaft sleeve and a lower baffle surface, the bearing inner ring is axially limited, and the axial positioning of the bearing is realized. The utility model adopts an integrated upper machine body structure, omits redundant parts, realizes light weight and reduces the external dimension, and avoids bearing falling failure under the yaw state of the fan by arranging the bidirectional limiting structure of the inner ring and the outer ring of the bearing, thereby improving the reliability of the high-speed end structure and prolonging the service life.

Inventors

  • Cao Zuoyu
  • ZHANG SHAOFEI
  • Hao Renqiang
  • WANG JIYU
  • ZHANG SHAORUI
  • YIN GUODONG
  • TAO QI

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 (9)

  1. 1. The utility model provides a lightweight yaw speed reducer high-speed end structure that anti-bearing drops, its characterized in that includes upper body (2), upper body (2) are including cylindric fuselage body (7), and fuselage body (7) upside inner edge radially inwards extends and forms first upper mounting panel (8), and the inner edge of first upper mounting panel (8) is along fuselage body (7) axially inwards extension and is formed axial sun gear hole (9), rotates through bearing (10) in axial sun gear hole (9) and installs sun gear (4); The bearing is characterized in that a retainer ring groove is formed in the inner side wall of the axial sun gear hole (9), an elastic retainer ring (11) is arranged in the retainer ring groove, the elastic retainer ring (11) is located at the lower end of the outer ring of the bearing (10), the inner side wall of the axial sun gear hole (9) is located at the upper end of the outer ring of the bearing (10) to form an upper baffle surface (12), a shaft sleeve (3) is sleeved on the sun gear (4), the shaft sleeve (3) is located at the upper end of the inner ring of the bearing (10), and the sun gear (4) is located at the lower end of the inner ring of the bearing (10) to form a lower baffle surface (13).
  2. 2. The high-speed end structure of the lightweight yaw reducer for preventing bearing falling according to claim 1, wherein the machine body (7) is provided with an air vent (14) and an oil injection screw hole (15), the air vent (14) is internally provided with an air permeable plug (1), and the oil injection screw hole (15) is internally provided with a screw plug (5).
  3. 3. The high-speed end structure of the lightweight yaw reducer capable of preventing bearing falling according to claim 1, wherein an observation hole (16) is formed in the body (7), an oil pointer (6) is mounted in the observation hole (16), and a floating ball (17) is arranged in the oil pointer (6).
  4. 4. The high-speed end structure of the lightweight yaw reducer capable of preventing bearing falling according to claim 1, wherein a stepped hole (18) and a spline groove (19) are axially formed in the sun gear (4).
  5. 5. The high-speed end structure of the lightweight yaw reducer capable of preventing bearing falling according to claim 1, wherein a reinforcing rib (20) is connected between the outer side wall of the axial sun gear hole (9) and the inner side wall of the machine body (7).
  6. 6. The high-speed end structure of the lightweight yaw reducer with the bearing drop prevention function according to claim 1, wherein the outer edge of the upper side of the machine body (7) extends radially outwards to form a second upper mounting plate (22), and the upper surface of the second upper mounting plate (22) is higher than the upper surface of the first upper mounting plate (8); The outer edge of the lower side of the machine body (7) extends outwards in the radial direction to form a first lower mounting plate (23), the outer edge of the first lower mounting plate (23) extends outwards in the radial direction to form a second lower mounting plate (24), and the height of the lower surface of the second lower mounting plate (24) is lower than that of the lower surface of the first lower mounting plate (23); The first upper mounting plate (8) is provided with a through hole (21), and the second upper mounting plate (22) and the second lower mounting plate (24) are provided with mounting threaded holes; The outer edge of the second lower mounting plate (24) forms a limiting ring (25).
  7. 7. The bearing-drop-preventing high-speed end structure of the lightweight yaw reducer of claim 6, wherein the second upper mounting plate (22) is provided with an annular groove (26), and a static sealing ring is arranged in the annular groove (26).
  8. 8. The high-speed end structure of the lightweight yaw reducer capable of preventing bearing falling according to claim 1, wherein lifting lugs (27) are integrally formed on the outer side of the body (7).
  9. 9. The lightweight yaw reducer high-speed end structure for preventing bearing drop according to claim 1, wherein the bearing (10) is a deep groove ball bearing.

Description

High-speed end structure of lightweight yaw speed reducer capable of preventing bearing from falling off Technical Field The utility model relates to the technical field of wind power generation equipment, in particular to a high-speed end structure of a lightweight yaw speed reducer for preventing bearing from falling. 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. Under the influence of a fan braking structure and a control strategy, the passive yaw of the engine room can occur in windy weather, the yaw speed reducer is reversely towed, and the high-speed end of the yaw speed reducer can generate a short-time ultrahigh rotating speed of 6000r/min at the maximum. The input end of the existing yaw speed reducer adopts the circlip to position the bearing and rotate along with the input shaft, and the circlip has great falling risk during ultrahigh rotating speed, so that the reliability can not meet the harsh use requirement. In addition, the high-speed end of the existing yaw speed reducer has structural redundancy, so that the overall dimension and weight of the speed reducer are limited. Disclosure of utility model The utility model provides a lightweight yaw speed reducer high-speed end structure for preventing bearing falling, which aims to solve the technical problems that in the prior art, the falling risk of a bearing is high and the structure is redundant when an elastic retainer ring is adopted to position the input end of a yaw speed reducer. For this purpose, the utility model provides the following technical scheme: The utility model provides a lightweight yaw reducer high-speed end structure that bearing drops is prevented, includes the organism that goes up, go up the organism and include the fuselage body of tube-shape, the radial inwards extension of fuselage body upside inner edge forms first upper mounting panel, the inner edge of first upper mounting panel forms axial sun gear hole along fuselage body axial inwards extension (integrated into one piece structure, reduces assembly process, reduces overall dimension, reduces complete machine weight), installs the sun gear through bearing rotation in the axial sun gear hole; The inner side wall of the axial sun gear hole is provided with a check ring groove, an elastic check ring is arranged in the check ring groove and positioned at the lower end of the outer ring of the bearing, and the inner side wall of the axial sun gear hole is positioned at the upper end of the outer ring of the bearing to form an upper baffle surface; the sun gear is sleeved with the shaft sleeve, the shaft sleeve is positioned at the upper end of the inner ring of the bearing, the sun gear is positioned at the lower end of the inner ring of the bearing to form a lower baffle surface (the outer ring of the bearing realizes axial bidirectional limiting through the upper baffle surface and the elastic retainer ring, the inner ring of the bearing realizes axial bidirectional limiting through the shaft sleeve and the lower baffle surface, the positioning reliability of the bearing under the ultrahigh rotating speed is improved, and the falling risk under the reverse dragging working condition is avoided). Further, the air vent and the oil injection screw hole are formed in the machine body, an air permeable plug (balancing the internal and external air pressure of the speed reducer, preventing the pressure in the cavity from abnormally rising, prolonging the service life of internal parts) is arranged in the air vent, and the screw plug (realizing lubricating oil filling and plugging, facilitating the later maintenance and guaranteeing the lubricating effect of the high-speed end) is arranged in the oil injection screw hole. Further, the observation hole is formed in the machine body, an oil level gauge (intuitively observing the liquid level of lubricating oil in the speed reducer, facilitating timely oil supplement and avoiding oil shortage abrasion) is arranged in the observation hole, and a floating ball (which is lifted along with the liquid level, improves the liquid level observation accuracy and reduces the observation error) is arranged in the oil level gauge. Further, a stepped hole and a spline groove (the stepped hole realizes the adaptive positioning of the sun gear and the shaft end of the yaw motor, and the spline groove ensures stable power transmission) are arranged in the sun gear. Further, a reinforcing rib is connected between the outer side wall of the axial sun gear hole and the inner side wall of the machine body (the machine body is prevented from deforming during high-speed operation, and the structural stability is ensured). Further, the outer edge of the upper side of the machine body ex