CN201461901U

CN201461901U - Planetary wheel assembly for epicyclic gearbox

Info

Publication number: CN201461901U
Application number: CN2009201199252U
Authority: CN
Inventors: 张志华; 时大方; 马全法
Original assignee: ZHEJIANG TIANMA BEARING CO Ltd
Current assignee: Tianma Bearing Group Co Ltd
Priority date: 2009-05-18
Filing date: 2009-05-18
Publication date: 2010-05-12
Anticipated expiration: 2019-05-18

Abstract

The utility model relates to a planetary wheel assembly for an epicyclic gearbox, which is characterized by comprising a gear ring, a transitional sheath, an outer ring, an inner ring and cylindrical rollers, wherein the internal surface of the gear ring is matched with the external surface of the transitional sheath; the internal surface of the transitional sheath is a spherical surface, and the external surface of the outer ring is a spherical surface; the internal surface of the transitional sheath is matched with the external surface of the outer ring; the cylindrical rollers are installed on the roller tracks of the outer ring and the inner ring; and the inner ring is matched with a shaft. The external surface of the gear ring is straight teeth or skewed teeth. The inner ring of the utility model is cylindrical or conical. The part between the transitional sheath and the outer ring can rotate and deflect. The outer ring, the inner ring and the cylindrical rollers of the utility model constitute a biserial full cylindrical roller bearing. The transitional sheath, the outer ring, the inner ring and the cylindrical rollers of the utility model are made of high-carbon chromium bearing steel; and the gear ring is made of 42CrMo4. The utility model has the advantage of simple structure, can bear large radial load and has the function of self-aligning.

Description

The planetary wheeling assembly that is used for epicyclic gearbox

Technical field:

The utility model relates to a kind of planetary wheeling assembly that is used for epicyclic gearbox.

Background technique:

Planetary wheeling assembly is a kind of being applied in the wind-driven generator epicyclic gearbox, is used for supporting and bearing the parts of gear load, and this product is used in the epicyclic gearbox of wind-driven generator specially can bear radial force and the moment that gear transmission is subjected to.

Referring to Fig. 1, this product is simple in structure because of it, the boundary dimension compactness, and bearing capacity is strong, and has the self-aligning function, is widely used in the epicyclic gearbox of wind-driven generator; This product adopts Biserial cylindrical roller bearing and gear ring cooperation or selfaligning roller bearing and gear ring cooperation at present, and the shortcoming that the bearing of these two kinds of structures exists is:

1. though adopt Biserial cylindrical roller bearing and gear ring to cooperate this assembly simple in structure at present, local contact takes place easily, can not solve bearing failure and the gear ring that unbalance loading that gear is subjected to producing under the different direction power causes and lose efficacy.

2. though adopt selfaligning roller bearing and gear ring to cooperate this assembly to have the aligning function, the radial load that bears does not reach the expection requirement.

Present structure can not solve well can bear the function that big radial load has aligning again.

Summary of the invention:

Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in the prior art, and a kind of planetary wheeling assembly that is used for epicyclic gearbox is provided.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this is used for the planetary wheeling assembly of epicyclic gearbox, it is characterized in that being provided with gear ring, spacer shell, outer ring, inner ring, cylindrical roller, the gear ring internal surface cooperates with the outer surface of spacer shell, the internal surface of spacer shell is a sphere, the outer surface of outer ring is a sphere, the spacer shell internal surface cooperates with the outer ring outer surface, and cylindrical roller is installed on the raceway of outer ring and inner ring, and inner ring cooperates with axle.

The utility model gear ring outer surface is straight-tooth or helical teeth.

The utility model inner ring is cylindrical or conical.

The utility model spacer shell and outer ring cooperate, and can rotate and beat between spacer shell and the outer ring.

Outer ring of the present utility model, inner ring and cylindrical roller are formed double-row full-complement cylinder roller bearing.

The material of the utility model spacer shell, outer ring, inner ring, cylindrical roller all adopts high-carbon-chromium bearing steel, and gear ring is 42CrMo4.

The utlity model has following advantage and effect: simple for structure, can bear bigger radial load, have the function of aligning again.

Description of drawings:

Fig. 1 is the prior art constructions schematic representation;

Fig. 2 is the utility model embodiment's a structural representation.

Embodiment:

Referring to Fig. 2, the planetary wheeling assembly that the utility model embodiment is used for epicyclic gearbox is made up of a gear ring 1, spacer shell 2, outer ring 3, inner ring 4 and several cylinders roller 5, the material of spacer shell 2, outer ring 3, inner ring 4, cylindrical roller 5 all adopts high-carbon-chromium bearing steel, gear ring 1 adopts 42CrMo4 to make, the outer surface flute profile of gear ring 1 is straight-tooth or helical teeth, the outer surface interference fit of gear ring 1 internal surface and spacer shell 2 guarantees to cooperate the back in aggregates; Spacer shell 2 internal surfaces are that sphere and outer ring 3 outer surfaces cooperate, and can swing between spacer shell 2 and the outer ring 3, have certain inclination angle, adopt punch ram to cooperate when spacer shell 2 and outer ring 3 assemblings; Outer ring 3 raceways have the biserial raceway, are convenient to cylindrical roller 5 and move in raceway, and cylindrical roller 5 and inner ring 4, outer ring 3 raceways all cooperate, and inner ring 4 can be the cylindrical taper that also can be, and inner ring 4 and axle interference fit rotate together with the axis.

The utility model embodiment's design feature makes the carrying deflection moment of whole planetary wheeling assembly improve greatly, because: 1. adopt the double-row full-complement cylindrical roller bearing to increase its radially bearing capacity; 2. the characteristics that adopt sphere to cooperate make it have the aligning function, can bear bigger deflection load.

Claims

1. planetary wheeling assembly that is used for epicyclic gearbox, it is characterized in that: be provided with gear ring, spacer shell, outer ring, inner ring, cylindrical roller, the gear ring internal surface cooperates with the outer surface of spacer shell, the internal surface of spacer shell is a sphere, the outer surface of outer ring is a sphere, the spacer shell internal surface cooperates with the outer ring outer surface, and cylindrical roller is installed on the raceway of outer ring and inner ring, and inner ring cooperates with axle.

2. the planetary wheeling assembly that is used for epicyclic gearbox according to claim 1 is characterized in that: the gear ring outer surface is straight-tooth or helical teeth.

3. the planetary wheeling assembly that is used for epicyclic gearbox according to claim 1 is characterized in that: outer ring, inner ring and cylindrical roller are formed double-row full-complement cylinder roller bearing.

4. the planetary wheeling assembly that is used for epicyclic gearbox according to claim 1 is characterized in that: inner ring is cylindrical or conical.

5. the planetary wheeling assembly that is used for epicyclic gearbox according to claim 1 is characterized in that: the material of spacer shell, outer ring, inner ring, cylindrical roller all adopts high-carbon-chromium bearing steel, and gear ring adopts 42CrMo4.