CN214743236U

CN214743236U - Oil injection piece and wind power gear box

Info

Publication number: CN214743236U
Application number: CN202022961219.1U
Authority: CN
Inventors: 邓维维; 戚松; 王雪丰; 许若震; 张合超
Original assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Current assignee: Nanjing High Speed Gear Manufacturing Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-11-16
Anticipated expiration: 2030-12-09

Abstract

The utility model belongs to the technical field of the gear box, a oil spout spare and wind-powered electricity generation gear box is disclosed. The oil injection piece comprises a body and a latch. An oil inlet pipeline is arranged inside the body. The latch sets up in the interior round department of body and along the radial extension of body, has oil outlet pipe way in the latch, and oil inlet pipe way's one end and oil inlet pipe way intercommunication, oil outlet pipe way's the other end run through the axial terminal surface of body and form the nozzle opening. The latch can be coaxially sleeved on the sun gear so that the oil spray hole is just opposite to the spline meshing position between the sun gear and the internal spline shaft. The oil injection part is simple in structure and easy to process, the oil injection hole of the internal oil injection pipeline is just opposite to the spline meshing position between the sun gear and the internal spline shaft, and the lubrication condition of the spline meshing position is improved.

Description

Oil injection piece and wind power gear box

Technical Field

The utility model belongs to the technical field of the gear box, especially, relate to an oil spout spare and wind-powered electricity generation gear box.

Background

Spline coupling is a common connection means for axially transferring loads. The spline has more teeth, larger total contact area, larger load bearing capacity, more uniform stress and good alignment between the parts on the shaft and the shaft. Therefore, the spline coupling is widely applied to wind power gearboxes.

Because the spline meshing is hidden in the spline shaft hole, and the spline is far away from the lubricating main oil way, the lubricating condition at the spline meshing position is poor. At present, lubricating oil is guided from a main oil passage to a spline mainly through an oil injection ring. Due to assembly limitation, oil of the oil injection ring cannot be directly injected to the spline meshing position, even is easily injected to the end of the spline shaft, so that the spline meshing position cannot be well lubricated, the working surface of the spline is abraded, and normal use of the spline is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil spout spare to improve the lubricated condition of spline meshing position, reduce the wearing and tearing of spline working face, improve the life of spline.

To achieve the purpose, the technical proposal adopted by the utility model is that:

a fuel injection member comprising:

the oil inlet pipeline is arranged inside the body;

the clamping teeth are arranged at the inner circle of the body and extend along the radial direction of the body, an oil outlet pipeline is arranged in the clamping teeth, one end of the oil outlet pipeline is communicated with the oil inlet pipeline, and the other end of the oil outlet pipeline penetrates through the axial end face of the body to form an oil injection hole;

the clamping teeth can be coaxially sleeved on the sun wheel, so that the oil injection hole is opposite to a spline meshing position between the sun wheel and the internal spline shaft.

Preferably, the diameter of a circle where the center of the oil spray hole is located is D1, the diameters of a tooth root circle of an external spline of the sun gear and a tooth root circle of an internal spline of the internal spline shaft are Df1 and Df2 respectively, and Df1 is not less than D1 is not less than Df 2.

Preferably, the diameter of the circle where the tooth tip of the latch is located is D2, the diameter of the tooth root circle of the gear on the sun gear is D3, and D3< D2.

Preferably, the oil inlet pipeline and the oil outlet pipeline are connected at an included angle gamma.

Preferably, the oil inlet pipeline extends along the radial direction of the body, and the oil outlet pipeline extends along the axial direction of the body.

Preferably, two adjacent latches and the inner circle of the body enclose an avoiding groove together, and the avoiding groove is used for avoiding the gear.

Preferably, the number of the latch is smaller than the number of tooth grooves of the gear on the sun gear, the avoiding grooves are provided with a plurality of slots, and the central angles corresponding to the opening ends of at least two of the avoiding grooves are not equal.

Preferably, the number of the latch is equal to the number of tooth grooves of the gear of the sun gear, and the latch is distributed at equal intervals along the circumferential direction of the inner circle, so that the central angles corresponding to the opening ends of the avoidance grooves are equal.

Preferably, the peripheral surface of the body is provided with annular grooves distributed along the circumferential direction of the body, and the oil inlet of the oil inlet pipeline is positioned at the bottom of the annular groove.

Another object of the utility model is to provide a wind-powered electricity generation gear box to improve the lubricated condition of spline meshing position, reduce the wearing and tearing of spline working face, improve the life of spline.

the utility model provides a wind-powered electricity generation gear box, includes sun gear, internal spline shaft and foretell oil spout spare, the sun gear with internal spline shaft splined connection, oil spout spare fixed set up in just coaxial cover is located in the wind-powered electricity generation gear box on the sun gear, the nozzle opening just is to spline meshing position.

The utility model has the advantages that:

the utility model provides an oil spout spare, simple structure, easily processing. The oil spray hole of the oil spray piece is just opposite to the spline meshing position between the sun gear and the internal spline shaft, lubricating oil can be directly sprayed to the spline meshing position, the oil spray effect is enhanced, the lubricating condition of the spline meshing position is improved, the abrasion of the working surface of the spline is reduced, and the service life of the spline is prolonged.

The utility model provides a wind-powered electricity generation gear box, this wind-powered electricity generation gear box adopt foretell oil spout spare, and the nozzle opening of oil spout spare is just to the spline meshing position between sun gear and the internal spline axle, has strengthened the oil spout effect, has improved the lubricated condition of spline meshing position, has reduced the wearing and tearing of the working face of spline, is favorable to improving the life of spline.

Drawings

FIG. 1 is a schematic view of the sun gear, the internal spline shaft and the oil injection member according to the embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of an oil injection member provided by the embodiment of the invention;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 4 at C;

fig. 7 is a sectional view taken along the direction D-D in fig. 2.

The component names and designations in the drawings are as follows:

10. an oil injection piece; 20. a sun gear; 201. a gear; 30. a female spline shaft;

1. a body; 11. an oil inlet pipeline; 111. an oil inlet; 12. an annular groove; 2. clamping teeth; 21. an oil outlet pipeline; 211. an oil spray hole; 22. avoiding the groove.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

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.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

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

As shown in fig. 1, the present embodiment discloses a wind power gearbox (not shown) including a sun gear 20, a female spline shaft 30, and an oil jet member 10. The sun gear 20 is in splined connection with the internal spline shaft 30, the oil injection piece 10 is fixedly arranged in the wind power gear box and coaxially sleeved on the sun gear 20, and the oil injection hole 211 is just opposite to the spline meshing position.

As shown in fig. 1 and 2, the sun gear 20 of the present embodiment has a gear end and a spline end at its two ends, respectively, wherein the gear end is configured with a gear 201, and the spline end is configured with an external spline and can mesh with an internal spline of the internal spline shaft 30. Specifically, the method comprises the following steps: with oil spout spare 10 fixed mounting in the box of wind-powered electricity generation gear box, after sun gear 20 and internal spline shaft 30 splined connection, the gear end of sun gear 20 passes the inner ring of oil spout spare 10 for the coaxial cover of oil spout spare 10 is located on sun gear 20, thereby makes the nozzle opening 211 of oil spout spare 10 just to spline meshing position, has improved the lubricated condition of spline meshing position, has reduced the wearing and tearing of the working face of spline, is favorable to improving the life of spline.

It should be noted that the oil injection piece 10 may be used alone in a wind power gear box, or may be used as an oil injection ring or a component of a rotating frame in the wind power gear box.

As shown in fig. 2-6, the present embodiment further discloses an oil injection member 10, wherein the oil injection member 10 includes a body 1 and a latch 2. An oil inlet pipeline 11 is arranged in the body 1. The latch 2 is arranged at the inner circle of the body 1 and extends along the radial direction of the body 1, an oil outlet pipeline 21 is arranged in the latch 2, one end of the oil outlet pipeline 21 is communicated with the oil inlet pipeline 11, and the other end of the oil outlet pipeline 21 penetrates through the axial end face of the body 1 to form an oil injection hole 211. The latch 2 is capable of coaxially housing the sun gear 20 such that the oil spray hole 211 is aligned with the spline engagement position between the spline shafts 30 in the sun gear 20.

The fuel injection member 10 of the present embodiment is an annular body having an inner circle, which facilitates the coaxial installation of the fuel injection member 10 and the sun gear 20. One end of the oil outlet pipeline 21 is communicated with the oil inlet pipeline 11 to form an oil injection pipeline, and the oil injection hole 211 is an oil outlet of the oil injection pipeline.

This oil spout spare 10 simple structure, easily processing, the nozzle opening 211 of inside oil spout pipeline is just to the spline meshing position between sun gear 20 and the internal spline axle 30 to the lubricating oil direct injection to the spline meshing position of oil spout pipeline has strengthened the oil spout effect, has improved the lubricated condition of spline meshing position, has reduced the wearing and tearing of spline working face, is favorable to improving the life of spline.

As shown in fig. 2 and 3, the diameter of the circle where the center of the oil spray hole 211 is located is D1, the diameters of the root circle of the external spline of the sun gear 20 and the root circle of the internal spline shaft 30 are Df1 and Df2, respectively, and Df1 is not less than D1 is not less than Df 2. A spline meshing position is formed between the tooth root circle of the external spline of the sun wheel 20 and the tooth root circle of the internal spline shaft 30, and when Df1 is not less than D1 and not more than Df2, the center of the oil spray hole 211 directly faces the meshing position of the spline, so that lubricating oil is conveniently and directly sprayed to the spline meshing position, the spline shaft end of the lubricating oil sprayed to the sun wheel 20 is avoided, and the lubrication of the spline meshing position is improved.

The diameter of the circle on which the tooth tip of the latch 2 of the present embodiment is located is D2, the diameter of the root circle of the gear 201 on the sun gear 20 is D3, and D3< D2. Due to the fact that D3< D2, when the latch 2 penetrates through the gear end of the sun gear 20, a certain gap exists between the two, and interference is avoided.

The oil inlet pipeline 11 and the oil outlet pipeline 21 are connected at an included angle gamma.

Preferably, the oil inlet pipeline 11 extends along the radial direction of the body 1, and the oil outlet pipeline 21 extends along the axial direction of the body 1, so that the oil injection pipeline forms an L-shaped pipeline. The included angle gamma between the axial lead of the oil outlet pipeline 21 and the axial lead of the oil inlet pipeline 11 is 90 degrees, the length of the oil spraying pipeline is shortened, the oil spraying efficiency is improved, and meanwhile, the processing and the manufacturing are convenient. Of course, the oil inlet pipe 11 may also extend in other directions, and γ may also be at other angles, such as 120 °, 135 °, 150 °, and so on. It is only necessary to communicate with the end of the oil outlet pipe 21 away from the oil injection hole 211.

It should be noted that, on the premise of ensuring that the oil injection hole 211 is directly opposite to the spline engagement position, the included angle between the axial line of the oil outlet pipeline 21 and the axial line of the oil inlet pipeline 11 can be adjusted according to the requirement.

As shown in fig. 6, the outer peripheral surface of the body 1 has an annular groove 12 distributed along the circumferential direction thereof, and the oil inlet 111 of the oil inlet line 11 is located at the bottom of the annular groove 12. The annular groove 12 facilitates the drainage of the lubricating oil of the main oil passage into the oil inlet pipeline 11. Here, the size of the annular groove 12 is not particularly limited.

As shown in fig. 4 and 5, two adjacent latches 2 and the inner circle of the body 1 together enclose an avoiding groove 22, and the avoiding groove 22 gives way to the gear 201. The circle of the bottom wall of the avoiding groove 22 is the inner circle of the body 1, when the gear end of the sun gear 20 penetrates through the oil injection piece 10, the tooth groove of the gear 201 penetrates through the corresponding latch 2, the avoiding groove 22 avoids the gear 201 on the sun gear 20, and interference is avoided.

When the number of the latch 2 is smaller than the number of tooth grooves of the gear 201 on the sun gear 20, a plurality of avoiding grooves 22 are provided, wherein the central angles corresponding to the opening ends of at least two avoiding grooves 22 are not equal. The tooth tips of two adjacent latches 2 enclose the opening end of the corresponding avoiding groove 22. The sum of the central angles corresponding to the open ends of all of the escape slots 22 is therefore 360 °. It can be understood that the larger the number of the gears 201 that the avoidance groove 22 can yield the gear 201 is, the larger the angle of the center of the circle corresponding to the avoidance groove 22 is.

As shown in fig. 7, the number of the avoidance grooves 22 in the present embodiment is eight, wherein the avoidance groove 22 with a central angle α can yield three gears 201, the avoidance groove 22 with a central angle β can yield two gears 201, and α is greater than β. Of course, the same fuel injection member 10 may have a plurality of avoidance grooves 22 with different central angles, and the value of the specific central angle of the avoidance groove 22 is not particularly limited.

When the number of the latches 2 is equal to the number of the tooth grooves of the gear 201 of the sun gear 20, the latches 2 are distributed at equal intervals along the circumferential direction of the inner circle, so that the central angles corresponding to the opening ends of the avoiding grooves 22 are equal. Specifically, the inner circle of the body 1 has a gear structure that fits the gear 201 of the sun gear 20. The number of the latch 2 is increased, so that the number of oil spraying pipelines is increased, the lubrication condition of a spline meshing position is further improved, and the lubrication effect is enhanced.

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. A fuel injection member, comprising:

the oil-filling device comprises a body (1), wherein an oil inlet pipeline (11) is arranged inside the body (1);

the clamping teeth (2) are arranged at the inner circle of the body (1) and extend along the radial direction of the body (1), an oil outlet pipeline (21) is arranged in each clamping tooth (2), one end of each oil outlet pipeline (21) is communicated with the oil inlet pipeline (11), and the other end of each oil outlet pipeline (21) penetrates through the axial end face of the body (1) to form an oil injection hole (211);

the clamping teeth (2) can be coaxially sleeved on the sun gear (20) so that the oil spray hole (211) is opposite to a spline meshing position between the sun gear (20) and the internal spline shaft (30).

2. The oil injection piece according to claim 1, characterized in that the diameter of the circle where the center of the oil injection hole (211) is located is D1, the diameters of the root circle of the external spline of the sun gear (20) and the root circle of the internal spline shaft (30) are Df1 and Df2, respectively, and Df1 ≦ D1 ≦ Df 2.

3. Oil spout according to claim 1, characterized in that the diameter of the circle on which the tip of the latch (2) lies is D2, and the diameter of the root circle of the gearwheel (201) on the sun wheel (20) is D3, D3< D2.

4. Oil injection piece according to claim 1, characterized in that the oil inlet line (11) is connected to the oil outlet line (21) at an angle γ.

5. Oil injection piece according to claim 1, characterized in that the oil inlet line (11) extends in the radial direction of the body (1) and the oil outlet line (21) extends in the axial direction of the body (1).

6. The oil injection piece according to claim 1, characterized in that two adjacent latches (2) and the inner circle of the body (1) jointly enclose an avoiding groove (22), and the avoiding groove (22) gives way to a gear (201) of the sun gear (20).

7. The oil injection piece according to claim 6, characterized in that the number of the latch teeth (2) is less than the number of tooth grooves of the gear (201) on the sun gear (20), the avoidance grooves (22) are provided in plurality, wherein the central angles of the open ends of at least two avoidance grooves (22) are not equal.

8. The oil injection piece according to claim 6, characterized in that the number of the latches (2) is equal to the number of teeth grooves of the gear (201) of the sun gear (20), and the latches (2) are equally spaced along the circumference of the inner circle so that the central angles of the open ends of the avoidance grooves (22) are equal.

9. The oil injection piece according to claim 1, characterized in that the outer peripheral surface of the body (1) has an annular groove (12) distributed along its circumference, and the oil inlet (111) of the oil inlet line (11) is located at the bottom of the groove of the annular groove (12).

10. The wind power gearbox is characterized by comprising a sun gear (20), a female spline shaft (30) and the oil injection piece as claimed in any one of claims 1 to 9, wherein the sun gear (20) is in spline connection with the female spline shaft (30), the oil injection piece is fixedly arranged in the wind power gearbox and coaxially sleeved on the sun gear (20), and the oil injection hole (211) is opposite to the spline meshing position.