CN219198093U

CN219198093U - Planet carrier

Info

Publication number: CN219198093U
Application number: CN202320272727.XU
Authority: CN
Inventors: 王进; 褚晨西; 孙波
Original assignee: Sichuan Jinheng Hydraulic Co ltd
Current assignee: Sichuan Jinheng Hydraulic Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-06-16
Anticipated expiration: 2033-02-21

Abstract

The utility model belongs to the technical field of power generation fans, and particularly relates to a planet carrier, which comprises a mounting plate, wherein a through hole is formed in the center of the mounting plate; a spline provided on an inner wall of the through hole; the star wheel columns encircle the periphery of the through hole and are connected with the same side part of the mounting disc; the planetary gears are consistent with the star wheel columns in number and correspondingly sleeved on the peripheries of the star wheel columns; the bearing is arranged between the planetary gear and the star wheel column, and the planetary gear is connected with the star wheel column through the bearing; the planet carrier and the planet shaft are split, a certain assembly error exists after assembly, and the planet gear is easy to cause abrasion of the periphery of the planet shaft and affects the service life of the planet shaft.

Description

Planet carrier

Technical Field

The utility model belongs to the technical field of power generation fans, and particularly relates to a planet carrier.

Background

The yaw pitch gearbox of a wind turbine is an important component of a wind turbine. The yaw gearbox is used for adjusting the steering of the engine room, the pitch gearbox is used for adjusting the angles of the blades, and the yaw gearbox and the pitch gearbox are combined to enable the wind power generator to adapt to the change of wind direction or wind power so as to obtain proper power generation wind power rotating speed, the planet carrier is an important part in planetary gear transmission, the born external torque is large, and the structural design of the wind power generator has important influences on load distribution among all the planetary gears and the bearing capacity, noise, vibration and the like of the mechanism.

The main gear box of the high-power wind driven generator generally comprises a two-stage planetary transmission system, and the transmission between the two planetary transmission systems depends on a spline to transmit power.

Chinese patent application No. CN202210339451.2 discloses a planet carrier, which comprises a mounting plate, a transmission shaft mounted on the mounting plate, and mounting rods mounted on the transmission shaft at intervals along the peripheral surface of the transmission shaft, wherein one end of the mounting rod far away from the transmission shaft is provided with a support column, the axis of the support column is parallel to the axis of the transmission shaft, a sun gear is mounted on the transmission shaft, and a planet wheel is mounted on the support column; a plurality of mounting blocks are arranged on the peripheral surface of the transmission shaft at intervals along the circumferential direction of the transmission shaft, and clamping grooves for embedding the mounting blocks are formed in one end, far away from the supporting columns, of the mounting rod.

However, the planet carrier and the planet shaft in the prior art are all split, a certain assembly error exists after split assembly, and the planet gear is easy to cause abrasion of the periphery of the planet shaft, so that the service life of the planet shaft is influenced.

Disclosure of Invention

In order to solve the technical problems, the utility model adopts the following technical scheme:

the planet carrier comprises a mounting plate, wherein a through hole is formed in the center of the mounting plate;

a spline provided on an inner wall of the through hole;

the star wheel columns encircle the periphery of the through hole and are connected with the same side part of the mounting disc;

the planetary gears are consistent with the star wheel columns in number and correspondingly sleeved on the peripheries of the star wheel columns;

the bearing is arranged between the planetary gear and the star wheel column, and the planetary gear is connected with the star wheel column through the bearing;

the annular clamping grooves are symmetrically formed in the star wheel columns, and the planetary gears are positioned between the two annular clamping grooves;

the first baffle plate and the second baffle plate are respectively matched with the annular clamping groove.

Further, the star wheel columns are at least three.

Further, the star wheel columns are vertically arranged on the same side of the mounting plate.

Further, the number of the star wheel columns is five, and the star wheel columns are circumferentially and uniformly distributed on the periphery of the through hole.

Further, the periphery of the spline is also provided with an annular groove.

Further, threaded holes for hoisting are arranged outside the outer ends of at least three star wheel columns.

Further, the star wheel column and the assembly section of the planetary gear adopt arc transition.

Compared with the prior art, the utility model has the following beneficial effects:

the design of the star wheel column and the mounting plate integrated structure is adopted, so that the precision and the assembly efficiency are improved compared with the split type structure; the bearing is additionally arranged on the periphery of the star wheel column, and the bearing and the star wheel column are in interference fit, so that abrasion of the periphery of the star wheel column is avoided, and the service life of the star wheel column is prolonged.

Drawings

FIG. 1 is a schematic view of a semi-sectional structure of an embodiment of a planet carrier according to the present utility model;

FIG. 2 is a schematic perspective view of an embodiment of a planet carrier according to the present utility model;

reference numerals in the drawings of the specification include:

the mounting plate 1, the annular groove 10, the through hole 2, the spline 3, the star wheel column 4, the planetary gear 40, the annular clamping groove 41, the boss 42, the bearing 43, the first baffle 44 and the second baffle 45.

Detailed Description

In order that those skilled in the art will better understand the present utility model, the following technical scheme of the present utility model will be further described with reference to the accompanying drawings and examples.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted, and that like or similar reference numerals in the drawings correspond to like or similar components in the embodiments of the present utility model; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

Examples:

as shown in fig. 1 and 2, the planet carrier of the utility model comprises a mounting plate 1, wherein a through hole 2 is formed in the center of the mounting plate 1, a spline 3 is arranged on the inner wall of the through hole 2, and the tooth surface of the spline 3 is provided with a nitriding treatment layer;

the star wheel columns 4 encircle the periphery of the through hole 2, the star wheel columns 4 are vertically arranged on the same side of the mounting plate 1, the number of the planetary gears 40 is consistent with that of the star wheel columns 4, the planetary gears are correspondingly sleeved on the periphery of the star wheel columns 4, and the star wheel columns 4 and the mounting plate 1 are integrated, so that the precision and the assembly efficiency are improved compared with those of the split type star wheel columns;

the bearing 43 is arranged between the planetary gear 40 and the star wheel column 4, the planetary gear 40 is connected with the star wheel column 4 through the bearing 43, the bearing 43 is additionally arranged on the periphery of the star wheel column 4, the planetary gear 40 and the star wheel column 4 are in interference fit, abrasion of the periphery of the star wheel column 4 is avoided, and the service life of the star wheel column 4 is prolonged;

the planetary gear 40 is rotated by being transmitted to the planetary gear 40 meshed with the planetary gear through the sun gear, so that the whole planet carrier rotates together, and the spline 3 and other connected parts output power through the spline 3 arranged in the mounting plate 1;

the planetary gear 40 is installed on the installation disc 1 through the star wheel column 4, two ends of the star wheel column 4 are limited to prevent the planetary gear 40 from deviating from the planet carrier under the long-term action of load, so that the annular clamping grooves 41 are formed, the planetary gear 40 is symmetrically arranged on the star wheel column 4, the planetary gear 40 is positioned between the two annular clamping grooves 41, the first blocking piece 44 and the second blocking piece 45 are respectively matched with the annular clamping grooves 41, the planetary gear 40 can be limited to move in the axial direction of the star wheel column 4, and the annular clamping grooves 41 can be snap springs.

As shown in fig. 2, the number of star wheel columns 4 can be five, the periphery of the spline 3 is also provided with an annular groove 10, and the outer ends of at least three star wheel columns 4 are provided with threaded holes for hoisting. In addition, an arc transition is adopted between the star wheel column 4 and the assembly section of the planetary gear 40, wherein a boss 42 is further arranged between the mounting plate 1 and the star wheel column 4, and a round angle is further led on the boss 42.

The foregoing is merely exemplary of the present utility model, and the specific structures and features well known in the art are not described in any way herein, so that those skilled in the art will be able to ascertain all prior art in the field, and will not be able to ascertain any prior art to which this utility model pertains, without the general knowledge of the skilled person in the field, before the application date or the priority date, to practice the present utility model, with the ability of these skilled persons to perfect and practice this utility model, with the help of the teachings of this application, with some typical known structures or methods not being the obstacle to the practice of this application by those skilled in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims

1. A planet carrier, comprising:

the mounting disc is provided with a through hole at the center;

a spline provided on an inner wall of the through hole;

2. A planet carrier as claimed in claim 1, wherein: the star wheel columns are at least three.

3. A planet carrier as claimed in claim 1, wherein: the star wheel columns are vertically arranged on the same side of the mounting plate.

4. A planet carrier as claimed in claim 1, wherein: the star wheel columns are five, and are circumferentially uniformly distributed on the periphery of the through hole.

5. A planet carrier as claimed in claim 1, wherein: the periphery of the spline is also provided with an annular groove.

6. A planet carrier as claimed in claim 1, wherein: and threaded holes for hoisting are arranged outside the outer ends of at least three star wheel columns.

7. A planet carrier as claimed in claim 1, wherein: and arc transition is adopted between the star wheel column and the assembly section of the planetary gear.