CN201461269U - Wind power planetary gear support device - Google Patents

Abstract

The utility model discloses a wind power planetary gear support device which comprises a planetary frame (1), a planetary shaft (2), a planetary gear (5), an inner ring gear (8) and a sun gear (9), wherein both ends of the planetary shaft (2) extend to the mounting inner hole of the planetary frame (1), the planetary gear (5) is supported on the planetary shaft (2) through a bearing, the planetary gear (5) is meshed with the inner ring gear (8) through the sun gear (9), the planetary gear (5) is supported on the planetary shaft (2) through two symmetrically-distributed left and right conical bearings (3,7), and the left and right conical bearings (3,7) are mounted back to back. As the wind power planetary gear support device adopts two conical bearings without outer rings and mounted back to back to support the planetary gear, on one hand, the bearing space size is reduced, and the structure size limitation of the planetary gear is solved; on the other hand, the support rigidity of the planetary shaft is effectively improved, so the wind power planetary gear support device has the advantages of ingenious design, simple structure, easy implementation, good reliability and long service life.

Description

Wind power planetary gear support device

technical field

The utility model belongs to the technical field of planetary gears, and in particular relates to a support device for a tapered bearing without an outer ring for wind power planetary gears.

Background technique

A planetary gear system usually includes a planet carrier, a planetary shaft, a planetary gear, an inner ring gear and a sun gear, wherein a sun gear is arranged at the center of the inner ring gear, and there is an annular gap between the inner ring gear and the sun gear, and the planetary gear is in In the gap between the sun gear and the ring gear, the planetary gear meshes inwardly with the sun gear and outwardly with the ring gear, and can perform circular motion in the gap. The planet wheels are supported on planet shafts via bearings, while the planet shafts are mounted in the planet carrier. At present, the support devices of wind power planetary gears mostly use full-roller cylindrical bearings. Because there is no cage, there is a risk of roller slipping damage, and because of the large size of this bearing, the structural size of the planetary gear is limited; in addition, in When the planetary gear adopts helical teeth, due to the existence of its overturning moment, the bearing area of the bearing rollers will be changed, and the actual service life of the bearing will be greatly reduced.

Utility model content

The technical problem to be solved by the utility model is to provide a wind power planetary gear support device that can effectively improve the support rigidity of the planetary shaft.

The technical scheme of the utility model is as follows: a wind power planetary gear support device, including a planetary frame, a planetary shaft, a planetary wheel, an inner ring gear and a sun gear, wherein the two ends of the planetary shaft extend into the installation inner hole of the planetary frame, and the The planetary shaft supports the planetary gear through bearings, and the planetary gear meshes with the ring gear through the sun gear. The key point is that the planetary gear is supported on the planetary shaft by two symmetrically arranged left and right cone bearings, and the left and right cone bearings Installed back to back.

The utility model changes the full roller cylindrical bearing between the planetary shaft and the planetary wheel into two back-to-back taper bearings, which not only facilitates the bearing installation, but also effectively improves the support rigidity of the planetary shaft and eliminates the risk of slipping damage .

The above-mentioned left and right tapered bearings are composed of inner rings and rollers, wherein the inner rings are fixedly sleeved on the planetary shafts, and a conical raceway is formed between the inner rings and the planetary wheels, and the rollers are installed in the conical raceways . The two tapered bearings have no outer ring, and the inner surface of the planetary gear is used as the outer ring of the tapered bearing, which reduces the size of the bearing space and solves the structural size limitation of the planetary gear.

A spacer is installed between the above-mentioned left cone bearing and the right cone bearing, and the spacer is sleeved on the planetary shaft. The spacer ring increases the bearing area of the bearing rollers, further improving the support rigidity of the planetary shaft.

An adjustment pad is installed between the above-mentioned planet carrier and the right taper bearing, and the adjustment pad is sleeved on the planet shaft. The internal clearance of the two tapered bearings can be controlled by adjusting the thickness of the adjusting pad, so as to ensure the normal and efficient work of the two tapered bearings.

Beneficial effects: the utility model supports the planetary wheel on the planetary shaft through two bevel gears without outer ring installed back to back, on the one hand, it reduces the size of the bearing space and solves the structural size limitation of the planetary wheel; on the other hand, it effectively improves It improves the supporting rigidity of the planetary shaft, and has the characteristics of ingenious design, simple structure, easy implementation, good reliability and long service life.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figure 1, the utility model is composed of a planetary carrier 1, a planetary shaft 2, a left cone bearing 3, a spacer ring 4, a planetary wheel 5, an adjustment pad 6, a right cone bearing 7, an inner ring gear 8 and a sun gear 9, etc. Composition, wherein the planetary shaft 2 is located in the planetary carrier 1, the two ends of the planetary shaft 2 extend into the installation inner hole of the planetary carrier 1, and the planetary shaft 2 is supported by two left and right taper bearings 3, 7 installed symmetrically back to back The planetary gear 5 meshes with the ring gear 8 through sun gears 9 uniformly distributed on the circumference. The left and right tapered bearings 3 and 7 are both composed of inner rings and rollers, wherein the inner rings are fixedly sleeved on the planetary shaft 2, and a conical raceway is formed between the inner rings and the planetary gear 5, and the rollers are installed in the conical raceway. The left and right cone bearings 3 and 7 are designed without outer rings, and the inner surface of the planetary gear 5 is used as the outer ring of the cone bearings. This structure reduces the space size of the bearings and solves the structural size limitation of the planetary gears. At the same time, the inner hole of the planetary gear 5 is treated with carburizing and quenching to improve its hardness, wear resistance and fatigue strength.

It can be seen from Figure 1 that a spacer 4 is installed between the left cone bearing 3 and the right cone bearing 7, and the spacer 4 is set on the planetary shaft 2, and the spacer 4 increases the bearing area of the bearing rollers, further improving the The support rigidity of the planet shaft. An adjustment pad 6 is installed between the planet carrier 1 and the right cone bearing 7 , and the adjustment pad 6 is sleeved on the planetary shaft 2 . By adjusting the thickness of the adjustment pad 6, the internal clearance of the left cone bearing 3 and the right cone bearing 7 is controlled to a negative value, so that the left cone bearing 3 and the right cone bearing 7 can well resist the planetary gear 5 and the ring gear 8 The overturning moment generated when meshing with the sun gear 9.

Claims (4)

1. A wind power planetary gear support device, comprising a planetary carrier (1), a planetary shaft (2), a planetary wheel (5), an inner ring gear (8) and a sun gear (9), wherein the two planetary shafts (2) The end extends into the installation inner hole of the planet carrier (1), and supports the planetary gear (5) on the planetary shaft (2) through bearings, and the planetary gear (5) meshes with the ring gear (8) through the sun gear (9) , characterized in that: the planetary wheel (5) is supported on the planetary shaft (2) through two symmetrically arranged left and right cone bearings (3, 7), and the left and right cone bearings (3, 7) are installed back to back. 2. The wind power planetary gear support device according to claim 1, characterized in that: the left and right tapered bearings (3, 7) are both composed of inner rings and rollers, wherein the inner rings are fixedly sleeved on the planetary shaft (2 ), a conical raceway is formed between the inner ring and the planet wheel (5), and the rollers are installed in the conical raceway. 3. The wind power planetary gear support device according to claim 1 or 2, characterized in that: a spacer (4) is installed between the left cone bearing (3) and the right cone bearing (7), the spacer (4) Set on the planet shaft (2). 4. The wind power planetary gear support device according to claim 1, characterized in that: an adjustment pad (6) is installed between the planet carrier (1) and the right cone bearing (7), and the adjustment pad (6) is set on the planet shaft (2).

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