CN2739384Y

CN2739384Y - Speed icnreasing gear box for wind-mill generator

Info

Publication number: CN2739384Y
Application number: CNU200420080175XU
Authority: CN
Inventors: 刘建国; 袁包钢; 戴莹; 朱江平
Original assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Current assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Priority date: 2004-10-12
Filing date: 2004-10-12
Publication date: 2005-11-09
Anticipated expiration: 2014-10-12

Abstract

The utility model relates to a speed increasing gear box for a wind-mill generator. The box body of the speed increasing gear box for the wind-mill generator comprises a main shaft sleeve, a middle box body, and a rear box body. The position of the output gear shaft of the rear box body is provided with a wind shielding plate. An inner gear ring is provided between the main shaft sleeve and the middle box body. A main shaft, a planetary rack, a sun wheel, a large gear coaxial core, a planetary rack are arranged between the main shaft sleeve and the middle box body. A large gear, a transition gear, and an output gear shaft are arranged in a triangle, and are installed between the middle box body and the rear box body. Sealed devices are arranged on the combining position of the main shaft and the front end of the main shaft sleeve, and the combining position of the output gear shaft and the rear box body. The speed increasing gear box for the wind-mill generator has the advantages that the box body is divided into the main shaft sleeve, the middle box body, and the rear box body, and the speed increasing gear box for the wind-mill generator is more convenient to be dismantled and installed; the inner gear ring is simultaneously used as the composing part of the box body, the weight of the speed increasing gear box for the wind-mill generator is alleviated, and the speed increasing gear box for the wind-mill generator is easy to be processed; A planetary wheel is installed by adopting spherical surface roller bearings, which can increase carrying capacity, and can reduce installation space; The wind shielding plate is additionally provided, the negative voltage generated by a brake disc can be shuffled, and the oil leakage of the output gear shaft is avoided.

Description

The step-up gear that is used for wind-driven generator

Technical field

The utility model relates to gear-box, especially a kind of step-up gear that is used for wind-driven generator.

Background technique

Utilize wind-power electricity generation to compare, have the free of contamination advantage of generating, compare with hydroelectric power with traditional thermal power generation, have that the capital construction cost is low, floor space is little, maintaining is advantage easily, and for large-scale hydroelectric power plant, also there is certain potential safety hazard in storage reservoir to the downstream easily.In wind-driven generator, gear-box is the critical component of wind-driven generator, and the wind-driven generator step-up gear of China's use at present mainly solves by import, is generally overall structure, and the dismounting difficulty in case break down, can only be changed assembly, causes waste.

Summary of the invention

The purpose of this utility model is: at step-up gear, especially the speed-increasing gearbox of wind driven generator volume is bigger, and the practical problem that dismounting is inconvenient provides a kind of new step-up gear that is used for wind-driven generator.

The purpose of this utility model is achieved in that a kind of step-up gear that is used for wind-driven generator, comprise casing, main shaft, planet carrier, sun gear, planet wheel, parallel-axes gears, output gear shaft, it is characterized in that: casing comprises collar bush, middle casing and rear box, the output gear shaft place of rear box is provided with barge board, be provided with ring gear between collar bush and the middle casing, collar bush, ring gear, middle casing are connected by bolt with rear box; Main shaft, planet carrier, sun gear, gearwheel concentric, planet carrier is assemblied on the main shaft by spline, described main shaft passes through two Bearing Installation in collar bush, stretch out the spindle nose of collar bush and be furnished with flange plate, planet carrier places between collar bush and the casing, gearwheel, transition gear, output gear shaft are installed in parallel between middle casing and the rear box by bearing, and distribution triangular in shape, the output terminal of output gear shaft passes rear box and barge board, transition gear comprises large and small two transition gears of coaxial setting, and output gear shaft is provided with small gear; The planet carrier periphery evenly is provided with three planet wheels, and planet wheel often meshes with ring gear, sun gear simultaneously; The end of sun gear is provided with spline and is connected with the splined shaft that drives gearwheel; Little transition gear on gearwheel and the transition gear often meshes, and great transition gear on the transition gear and the small gear on the output gear shaft often mesh; Main shaft and collar bush front end junction and output gear shaft and rear box junction are equipped with seal arrangement.

Advantage of the present utility model is: casing is divided into collar bush, middle casing and rear box, makes the gear-box dismounting convenient; Ring gear simultaneously as the constituent element of casing, has not only been alleviated the overall weight of gear-box, and processing easily; Planet wheel adopts two bearings, especially adopt spheric roller bearing to install after, both increased bearing capacity, reduced installing space again; The barge board that the output gear shaft place sets up can confuse the negative pressure that brake disc produces, and avoids the output gear shaft leakage of oil.

Description of drawings

Fig. 1 is a kind of example structure schematic representation that the utility model relates to;

Fig. 2 is that seal arrangement is at the output terminal scheme of installation.

Among the figure: 1, collar bush, 2, middle casing, 3, rear box, 4, planet carrier, 5, planet wheel, 6, ring gear, 7, main shaft, 8, sun gear, 9, gearwheel, 10, transition gear, 11, output gear shaft, 12, bearing, 13, seal arrangement, 14, flinger ring, 15, disc, 16, dust ring, 17, barge board, 18, bearing pin, 19, flange plate, 20, spill port, 21, splined shaft.

Embodiment

Accompanying drawing is nonrestrictive to disclose the structural representation of a kind of specific embodiment that the utility model relates to, and the utility model will be further described below in conjunction with accompanying drawing.

As seen from Figure 1, casing of the present utility model comprises collar bush 1, middle casing 2 and rear box 3, rear box 3 output gear shafts 11 places are provided with barge board 17, are provided with ring gear 6 between collar bush 1 and the middle casing 2, and collar bush 1, ring gear 6, middle casing 2 and rear box 3 are connected by bolt; Main shaft 7, planet carrier 4, sun gear 8, gearwheel 9 four concentrics, planet carrier 4 is assemblied on the main shaft 7 by spline, described main shaft 7 is installed in the collar bush 1 by two bearings 12, stretch out main shaft 7 ends of collar bush 1 and be furnished with flange plate 19, planet carrier 4 places between collar bush 1 and the casing 2, gearwheel 9, transition gear 10, output gear shaft 11 is installed in parallel between middle casing 2 and the rear box 3 by bearing 12, the output terminal of output gear shaft 11 passes rear box 3 and barge board 17, transition gear 10 comprises the big of coaxial setting, little two transition gears, output gear shaft 11 is provided with small gear; Planet carrier 4 peripheries evenly are provided with three planet wheels 5, and planet wheel 5 often meshes with ring gear 6, sun gear 8 simultaneously; The end of sun gear 8 is provided with spline and is connected with gearwheel 9; Little transition gear on gearwheel 9 and the transition gear 10 often meshes, and great transition gear on the transition gear 10 and the small gear on the output gear shaft 11 often mesh; Main shaft 7 is equipped with seal arrangement 13 with collar bush 1 front end junction and output gear shaft 11 with rear box 3 junctions.In the present embodiment, each planet wheel 5 is installed in respectively on even three bearing pins 18 that are provided with of planet carrier 4 peripheries by bearing 12, and described bearing 12 is a spheric roller bearing.During concrete enforcement, planet wheel and sun gear speed ratio are 5～6, and it is 3～4 that gearwheel and small offence are crossed gear ratio, and the speed ratio of small gear is 2.5～3.5 on great transition gear and the output gear shaft.

As seen from Figure 2, the seal arrangement 13 described in the embodiment that relates to of the utility model comprises flinger ring 14, disc 15 and dust ring 16.As shown in Figure 1, output gear shaft 11 is supported on the rear box 3 by bearing 12, the output terminal of output gear shaft 11 passes rear box 3 and is located at the barge board 17 at output gear shaft 11 places, is fitted with flinger ring 14, disc 15 and dust ring 16 from the inside to the outside successively in the intersection of output gear shaft 11 and rear box 3.The inner ring of disc 15 and output gear shaft 11 closely cooperate, outer ring and rear box 3 Spielpassung, and the casing 3 between flinger ring 14 and the disc 15 is provided with spill port 20.

During actual the use, the kinetic energy that wind-force forms drives planet carrier 4 by main shaft 7, planet wheel 5 is rotated around sun gear 8, because planet wheel 5 often meshes with ring gear 6, sun gear 8 simultaneously, make sun gear 8 produce rotation, and drive gearwheel 9 and rotates synchronously, drive output gear shafts 11 high speed rotating by transition gear 10 then, at last by output gear shaft 11 drive generator for electricity generation.

Claims

1, a kind of step-up gear that is used for wind-driven generator comprises casing, main shaft, planet carrier, sun gear, planet wheel, parallel-axes gears, output gear shaft, it is characterized in that:

A) casing comprises collar bush, middle casing and rear box, and the output gear shaft place of rear box is provided with barge board, is provided with ring gear between collar bush and the middle casing, and collar bush, ring gear, middle casing are connected by bolt with rear box;

B) main shaft, planet carrier, sun gear, the gearwheel concentric, planet carrier is assemblied on the main shaft by spline, described main shaft passes through two Bearing Installation in collar bush, stretch out the spindle nose of collar bush and be furnished with flange plate, planet carrier places between collar bush and the casing, gearwheel, transition gear, output gear shaft is installed in parallel between middle casing and the rear box by bearing, and distribution triangular in shape, the output terminal of output gear shaft passes rear box and barge board, transition gear comprises the big of coaxial setting, little two transition gears, output gear shaft is provided with small gear;

C) the planet carrier periphery evenly is provided with three planet wheels, and planet wheel often meshes with ring gear, sun gear simultaneously;

D) end of sun gear is provided with spline and is connected with the splined shaft that drives gearwheel;

E) the little transition gear on gearwheel and the transition gear often meshes, and great transition gear on the transition gear and the small gear on the output gear shaft often mesh;

F) main shaft and collar bush front end junction and output gear shaft and rear box junction are equipped with seal arrangement.

2, the step-up gear that is used for wind-driven generator according to claim 1 is characterized in that: each planet wheel is installed in respectively on even three bearing pins that are provided with of planet carrier periphery by bearing.

3, the step-up gear that is used for wind-driven generator according to claim 2 is characterized in that: described bearing is a spheric roller bearing.

4, the step-up gear that is used for wind-driven generator according to claim 1, it is characterized in that: described seal arrangement comprises flinger ring, disc and dust ring.