CN211117523U

CN211117523U - Planet carrier and gear box

Info

Publication number: CN211117523U
Application number: CN201922214872.9U
Authority: CN
Inventors: 张迅; 范世荣; 苏景鹤; 熊永强
Original assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Current assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-07-28
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a planet carrier and gear box, it belongs to mechanical transmission technical field, the planet carrier include the main part and with the axle sleeve portion that the main part axial is connected, the notch has been seted up in the axle sleeve portion, the one end of notch is seted up in the axle sleeve portion is kept away from on the terminal surface of main part, the other end is followed the axial extension of axle sleeve portion. The gear box comprises the planet carrier. The arrangement of the notches can effectively weaken the circumferential rigidity of the shaft sleeve part and provide an avoiding space for the deformation of the shaft sleeve part. During the use, thereby axle sleeve portion is under the effect of shrink dish, thereby circumference and radial compressed production elastic deformation, the setting of notch for axle sleeve portion can hold tightly after warping with axle sleeve portion complex main shaft, makes to connect firmly, is difficult for appearing sliding, and then improves the biography and turns round the characteristic.

Description

Planet carrier and gear box

Technical Field

The utility model relates to a mechanical transmission technical field especially relates to a planet carrier and gear box.

Background

Wind power is used as a renewable energy source, has strong advantages for power generation, and has the advantages of low construction cost, small occupied area, convenience in maintenance and the like compared with power generation by using energy sources such as firepower, solar energy, waterpower and the like. The gear box is widely applied to the field of wind power generation. The main function of the gearbox is to transmit the power generated by the wind wheel under the action of wind power to the generator and to enable the generator to obtain corresponding rotating speed.

Shrink disk connections are a common keyless drive system locking approach. As shown in fig. 1 to 3, for a gearbox using planetary transmission, a sleeve 101 is generally disposed on the planet carrier 10, and the sleeve 101 is connected with the wind power main shaft 20 by using a shrink disk 30. The shaft sleeve 101 is generally a cylinder, the shrink disk 30 mainly includes an inner ring 301, an outer ring 302 and a bolt 303, the inner ring 301 is sleeved on the shaft sleeve 101, and the inner ring 301 and the outer ring 302 are in conical surface contact. During pre-tightening, the inner ring 301 and the outer ring 302 form interference fit on the conical surface by tightening the bolt 303, and interference fit is also formed between the shaft sleeve 101 and the wind power main shaft 20 through pressure transmission, so that radial contact pressure and tangential friction force are generated, and torque transmission of the wind power main shaft 20 is realized.

The thickness of the bushing 101 varies from one gearbox model to another, typically between 70mm and 130 mm. Because the shaft sleeve 101 of the planet carrier 10 is thick and has strong circumferential rigidity, more pretightening force is wasted on overcoming circumferential and radial deformation of the shaft sleeve 101 after being stressed, and the torque transmission characteristic is greatly weakened, so that the connection between the shrinkage disc 30 and the shaft sleeve 101 is unstable, the shaft sleeve 101 and the wind power main shaft 20 are easy to slide, and torque transmission is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a planet carrier and gear box to the axle sleeve that exists has stronger circumference rigidity among the solution prior art, makes to be connected between shrink dish and the axle sleeve insecure, easily produces gliding technical problem between axle sleeve and the wind-powered electricity generation main shaft.

As the conception, the utility model adopts the technical proposal that:

the utility model provides a planet carrier, including the main part and with main part axial linkage's axle sleeve portion, the notch has been seted up in the axle sleeve portion, the one end of notch is seted up in the axle sleeve portion is kept away from on the terminal surface of main part, the other end is followed the axial extension of axle sleeve portion.

The notches are arranged in a plurality and are uniformly arranged around the circumference of the shaft sleeve part at intervals.

The two notches are arranged on the shaft sleeve part and are oppositely arranged.

Wherein the notch penetrates through the inner wall and the outer wall of the shaft sleeve part along the radial direction of the shaft sleeve part.

Wherein, the radial cross section of the notch is in a strip shape.

Wherein a depth of the notch is less than a radial thickness of the boss portion.

Wherein, the notch is opened on the surface of axle sleeve portion.

Wherein the notch is opened on the inner surface of the shaft sleeve part.

Wherein, the radial cross section of the notch is in a long strip shape or a V shape.

A gearbox comprising a planet carrier as described above.

The utility model has the advantages that:

the utility model provides a planet carrier, including main part and the axle sleeve portion of being connected with the main part axial, through set up the notch in axle sleeve portion, on the terminal surface that main part was kept away from to axle sleeve portion was seted up to the one end of notch, the other end along the axial extension of axle sleeve portion, can weaken the circumference rigidity of axle sleeve portion effectively, provide for the deformation of axle sleeve portion and dodge the space. During the use, thereby axle sleeve portion is under the effect of shrink dish, thereby circumference and radial compressed production elastic deformation, the setting of notch for axle sleeve portion can hold tightly after warping with axle sleeve portion complex main shaft, makes to connect firmly, is difficult for appearing sliding, and then improves the biography and turns round the characteristic.

Drawings

FIG. 1 is a schematic structural diagram of a conventional planet carrier and a wind power main shaft;

FIG. 2 is a schematic diagram of a conventional planet carrier;

FIG. 3 is an exploded view of a prior art shrink disk;

fig. 4 is a schematic structural diagram of a planet carrier according to a first embodiment of the present invention;

FIG. 5 is an enlarged view at A of FIG. 4;

fig. 6 is a schematic structural diagram of another planet carrier according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another planet carrier according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a planet carrier according to a second embodiment of the present invention;

fig. 9 is a schematic structural diagram of another planet carrier according to the second embodiment of the present invention;

fig. 10 is a schematic structural diagram of another planet carrier according to the second embodiment of the present invention;

in fig. 1-3:

10. a planet carrier; 101. a shaft sleeve; 20. a wind power main shaft; 30. a shrink disk; 301. an inner ring; 302. an outer ring; 303. a bolt;

in fig. 4-10:

1. a main body portion; 11. a support disc; 12. a support pillar;

2. a boss portion; 21. a notch.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

Referring to fig. 4 to 7, the embodiment of the present invention provides a planet carrier, including main part 1 and the axle sleeve portion 2 of being connected with main part 1 axial, main part 1 is used for installing the planet wheel, and main part 1 includes two supporting disk 11 that the interval set up and is located a plurality of support columns 12 between two supporting disk 11, can install a planet wheel between the adjacent support column 12, and axle sleeve portion 2 has the centre bore, can overlap and locate on the main shaft of fan, is connected through the shrink dish between axle sleeve portion 2 and the main shaft. The main body 1 and the retractable tray are not described in detail herein, and reference may be made to the prior art.

The shaft sleeve part 2 is provided with a notch 21, one end of the notch 21 is arranged on the end face, away from the main body part 1, of the shaft sleeve part 2, and the other end of the notch extends along the axial direction of the shaft sleeve part 2. The circumferential rigidity of the boss portion 2 can be effectively weakened, and an avoidance space is provided for deformation of the boss portion 2. During the use, thereby axle sleeve portion 2 is under the effect of shrink dish, thereby circumference and radial compressed production elastic deformation, notch 21's setting for 2 warp back of axle sleeve portion can hold tightly with 2 complex main shafts of axle sleeve portion, make to connect firmly, the difficult slip that appears, and then improve the biography and turn round the characteristic.

One or more notches 21 may be provided. When the notch 21 is provided in one, the notch 21 may be provided at any position in the circumferential direction of the boss portion 2. When the notch 21 is provided in plural, the plural notches 21 are provided at regular intervals around the circumferential direction of the boss portion 2, so that when the boss portion 2 is elastically deformed, the plural notches 21 can be uniformly reduced. When two notches 21 are provided, the two notches 21 are oppositely provided on the boss portion 2.

In the present embodiment, the notch 21 is a through-groove. The notch 21 penetrates the inner wall and the outer wall of the boss portion 2 in the radial direction of the boss portion 2, i.e., the depth of the notch 21 is equal to the radial thickness of the boss portion 2. When the boss portion 2 is elastically deformed, the solid bodies on both sides of the notch 21 are deformed by an external force, so that the notch 21 is reduced, and the boss portion 2 is compressed in the circumferential direction to hold the spindle tightly.

The radial section of the notch 21 is in a long strip shape, so that the processing and the production are convenient. Of course, the cross section of the notch 21 may be provided in a V shape or a U shape, which is not limited herein.

Notch 21 can be followed straight line extension along the axial extension of axle sleeve portion 2, and the processing production of being convenient for also can be followed the curve and extended, does not do the restriction here, as long as axle sleeve portion 2 is when taking place elastic deformation, notch 21 can provide dodge the space can.

When axle sleeve portion 2 is the echelonment, including the first section and the second section that connect gradually at least, the second section is connected with main part 1, and the one end of notch 21 is seted up on the terminal surface that the second section was kept away from to the first section, and the axial extension's of the other end edge axle sleeve portion 2 length is not more than the axial length of first section to guarantee the structural strength of axle sleeve portion 2.

Example two

Fig. 8 to 10 show a second embodiment, wherein the same or corresponding parts as in the first embodiment are provided with the same reference numerals as in the first embodiment. For the sake of simplicity, only the differences between the second embodiment and the first embodiment will be described. The difference is that the depth of the notch 21 is less than the radial thickness of the boss portion 2. That is, the notch 21 is not a through-slot. Because the radial thickness of the boss portion 2 is large, even if the notch 21 is not a through groove, the effect of weakening the circumferential rigidity of the boss portion 2 can be achieved, and the influence of the notch 21 on the strength of the boss portion 2 is small. When axle sleeve portion 2 is under the effect of shrink dish, thereby when circumference and radial compressed produce elastic deformation, notch 21 reduces for 2 deformation back of axle sleeve portion can hold tightly with 2 complex main shafts of axle sleeve portion, make to connect firmly, the difficult slip that appears, and then improve the biography and turn round the characteristic.

In the present embodiment, the notches 21 are provided in plural, and the notches 21 are provided at regular intervals around the circumferential direction of the boss portion 2, so that when the boss portion 2 is elastically deformed, the notches 21 can be uniformly reduced, and the effect of weakening the circumferential rigidity of the boss portion 2 is better achieved.

The notch 21 may be opened on the outer surface of the boss portion 2, or may be opened on the inner surface of the boss portion 2, which is not limited herein.

The radial cross section of the notch 21 is a long strip or a V-shape, which is not limited herein.

The embodiment of the utility model provides a still provide a gear box, the planet carrier in above-mentioned arbitrary embodiment. Because the notch 21 is formed in the sleeve portion 2 of the planet carrier, the circumferential rigidity of the sleeve portion 2 can be effectively weakened, and an avoidance space is provided for deformation of the sleeve portion 2. During the use, thereby axle sleeve portion 2 is under the effect of shrink dish, thereby circumference and radial compressed production elastic deformation, notch 21's setting for 2 warp back of axle sleeve portion can hold tightly with 2 complex main shafts of axle sleeve portion, make to connect firmly, the difficult slip that appears, and then improve the biography and turn round the characteristic.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a planet carrier, including main part (1) and with main part (1) axial linkage's boss portion (2), its characterized in that, notch (21) have been seted up on boss portion (2), the one end of notch (21) is seted up in boss portion (2) is kept away from on the terminal surface of main part (1), the other end is followed the axial extension of boss portion (2).

2. The planet carrier according to claim 1, wherein the notch (21) is provided in a plurality, and the plurality of notches (21) are evenly spaced around the circumference of the boss portion (2).

3. Planet carrier according to claim 2, characterised in that the notches (21) are provided in two, the two notches (21) being arranged opposite each other on the sleeve part (2).

4. Planet carrier according to claim 1, characterised in that the slot (21) runs through the inner and outer wall of the sleeve part (2) in the radial direction of the sleeve part (2).

5. Planet carrier according to claim 4, characterised in that the radial cross section of the slot (21) is oblong.

6. Planet carrier according to claim 1, characterised in that the depth of the notch (21) is smaller than the radial thickness of the boss part (2).

7. Planet carrier according to claim 6, characterised in that the notch (21) opens onto the outer surface of the sleeve portion (2).

8. Planet carrier according to claim 6, characterised in that the notch (21) opens onto the inner surface of the sleeve portion (2).

9. Planet carrier according to claim 6, characterised in that the radial cross section of the notches (21) is oblong or V-shaped.

10. A gearbox comprising a planet carrier according to any of claims 1-9.