CN110725923A - Rear box body structure of wind power gear box - Google Patents

Abstract

The invention relates to a rear box structure of a wind power gearbox, comprising a rear box body, the rear box body is provided with a first shaft hole for the intermediate shaft to pass through, and a second shaft hole for the output shaft to pass through The outer edge of the cavity wall of the rear box body is evenly distributed with a number of installation holes for connecting the front box body, the inner side of the cavity wall at the lower end of the rear box body is provided with an axially extending oil groove. The lower end of the side is provided with an oil storage cavity, the oil storage cavity is communicated with the oil tank, the cavity bottom of the oil storage cavity is lower than the tank bottom of the oil tank, and the cavity wall of the upper end of the rear box body is cut flat horizontal Straight wall, the upper and lower ends of the rear box body are respectively provided with two lifting lugs, wherein the lower ends of the two lower lifting lugs are both provided with flat surfaces. The set oil groove avoids the deposition of iron filings, ensures the normal operation of the gear, and reduces the weight of the rear box through the horizontal straight wall at the upper end of the rear box, which is more conducive to the handling of the rear box.

Description

Back box structure of wind turbine gearbox

technical field

The invention relates to the technical field of wind power generation, in particular to a rear box structure of a wind power gearbox.

Background technique

Wind power generation is a power generation method that converts the kinetic energy of wind into mechanical energy, and then converts mechanical energy into electrical energy. Because wind is a renewable energy source, wind power generation does not require any fuel and does not produce air pollution, making wind power generation more efficient. getting more and more attention. Wind power gearbox is an important mechanical component in wind power generation, its main function is to transmit the power generated by the wind wheel under the action of wind to the generator and make it obtain the corresponding speed. The casing of the wind turbine gearbox is relatively large, and usually includes a front casing and a rear casing, and the front casing and the rear casing are connected by bolts. At present, in the long-term working process, the gears in the gearbox will produce iron filings due to wear and tear. These iron filings will sink to the lower end of the rear box cavity under the action of gravity, and gradually accumulate in the rear box over time. inside the cavity. As a result, the rotation of the gear is hindered, so that the gear cannot be meshed normally, and the service life of the gear is shortened. Moreover, due to the large volume of the wind power gearbox case and the large weight of the rear case, there is a problem of difficulty in handling.

SUMMARY OF THE INVENTION

The purpose of the present invention is to aim at the deficiencies of the prior art, to provide a rear box structure of a wind power gearbox, which avoids the deposition of iron filings through the provided oil groove, ensures the normal operation of the gear, and passes through the upper end of the rear box. The horizontal straight wall reduces the weight of the rear box and is more conducive to the handling of the rear box.

The technical scheme of the present invention is: a rear box structure of a wind turbine gearbox, comprising a rear box body, the rear box body is provided with a first shaft hole for the intermediate shaft to pass through, and a rear box body for the output shaft to pass through. The second shaft hole, the outer edge of the cavity wall of the rear box body is evenly distributed with a number of installation holes for connecting the front box body, the inner side of the cavity wall at the lower end of the rear box body is provided with an axially extending oil groove, and the rear box body is provided with an axially extending oil groove. The lower end of the rear side of the box body is provided with an oil storage cavity, the oil storage cavity is communicated with the oil tank, the cavity bottom of the oil storage cavity is lower than the tank bottom of the oil tank, and the cavity wall of the upper end of the rear box body is cut For the flat horizontal straight wall, the upper and lower ends of the rear box body are respectively provided with two lifting lugs, wherein the lower ends of the two lower lugs are both provided with flat surfaces.

The cross section of the oil groove is arc-shaped.

The cavity on the front side of the rear box body is provided with a stop for installing the ring gear.

A first bearing seat and a second bearing seat are arranged in the cavity of the rear box body, the first shaft hole is arranged on the shaft center of the first bearing seat, and the second shaft hole is arranged on the shaft center of the second bearing seat, Several reinforcing ribs are arranged between the first bearing seat and the cavity wall of the rear box body, and the second bearing seat is connected with the cavity wall of the rear box body and the first bearing seat through the reinforcing ribs.

The above technical solution is adopted: including a rear box body, the rear box body is provided with a first shaft hole for the intermediate shaft to pass through, and a second shaft hole for the output shaft to pass through, and the cavity of the rear box body is provided. A number of mounting holes for connecting the front box are evenly distributed along the outer edge of the wall, an axially extending oil groove is arranged on the inner side of the cavity wall at the lower end of the rear box body, and an oil storage cavity is arranged at the lower end of the rear side of the rear box body. The oil storage cavity is communicated with the oil tank, and the bottom of the oil storage cavity is lower than the bottom of the oil tank. Two lifting lugs are respectively set on the upper and lower ends of the two lower lugs, wherein the lower ends of the two lower lifting lugs are both set with planes. During long-term use, the iron filings generated by the gear wear will fall into the oil groove at the lower end of the rear case body, and the iron filings in the oil groove will move to the storage tank on the rear side of the rear case body driven by the lubricating oil. in the oil chamber. In this way, the accumulation of iron filings in the rear casing can be avoided, the normal operation of the gears is ensured, the meshing between the gears is good, and the service life of the gears in the gear box is prolonged. The provided oil storage cavity can not only be used to deposit iron filings, but also can be used to adjust the storage of lubricating oil in the gear box, so as to ensure a sufficient amount of lubricating oil and make the working environment of the gear better. At the same time, the cavity wall at the upper end of the rear box body is a horizontal straight wall, which can save materials for the production of a large volume rear box, reduce the weight of the rear box, and is more conducive to the handling of the rear box. Moreover, the horizontal straight wall can also be used as a reference plane to facilitate the installation of the rear box, and is more conducive to the arrangement and assembly of the observation cover of the rear box. The rear box structure is provided with two upper lifting ears and two lower lifting ears, wherein the two upper lifting ears can realize the lifting of the rear box body and the hoisting of the whole machine assembly, and the two lower lifting ears can realize the independent lifting of the rear box body. The inversion and the inversion of the whole machine assembly provide convenience for the use of the rear box. In addition, the planes at the lower ends of the two lower lifting lugs of the rear box are machined planes, which are more conducive to the support of the gearbox and ensure the stable placement of the gearbox during transportation and installation.

The section of the oil groove is arc-shaped, and the arc-shaped oil groove has no dead angle, which is more conducive to the driving of the iron filings by the lubricating oil, so that the iron filings can smoothly enter the oil storage cavity.

The cavity on the front side of the rear box body is provided with a stop for installing the ring gear, and the stop forms the positioning of the ring gear and facilitates the installation of the ring gear.

A first bearing seat and a second bearing seat are arranged in the cavity of the rear box body, the first shaft hole is arranged on the shaft center of the first bearing seat, and the second shaft hole is arranged on the shaft center of the second bearing seat, Several reinforcing ribs are arranged between the first bearing seat and the cavity wall of the rear box body, and the second bearing seat is connected with the cavity wall of the rear box body and the first bearing seat through the reinforcing ribs. Connecting the first bearing seat and the second bearing seat by the reinforcing ribs can not only ensure the sufficient strength of the rear box body structure, but also save materials and reduce the weight of the rear box body.

The rear box body of the wind power gearbox has high structural strength, and the installation of the rear box body is simple. It avoids the accumulation of iron filings in the rear box through the oil groove and the oil storage cavity, ensures the normal operation of the gears, makes the meshing between the gears good, and prolongs the service life of the gears in the gear box. The oil storage chamber has the function of adjusting the reserve of lubricating oil in the gear box. At the same time, the horizontal straight wall can save materials, reduce the weight of the rear box, be more conducive to the handling of the rear box, and also bring convenience to the assembly of the rear box and the arrangement of components. The two upper lifting ears and the two lower lifting ears in the rear box body structure facilitate the assembly and turning of the rear box body, and provide convenience for the use of the rear box body.

The present invention will be further described below with reference to the accompanying drawings and specific embodiments of the description.

Description of drawings

Fig. 1 is the structural representation of the present invention;

FIG. 2 is a schematic diagram of the section A-A in FIG. 1 .

In the drawings, 1 is the rear box body, 2 is the oil tank, 3 is the oil storage cavity, 4 is the lower lifting lug, 4-1 is the plane, 5 is the first shaft hole, 6 is the installation hole, and 7 is the cavity wall, 7-1 is the horizontal straight wall, 8 is the upper lifting lug, 9 is the second shaft hole, 10 is the reinforcing rib, 11 is the stop port, 12 is the second bearing seat, and 13 is the first bearing seat.

Detailed ways

1 to 2, a rear box structure of a wind turbine gearbox includes a rear box body 1, the rear box body 1 is provided with a first shaft hole 5 for the intermediate shaft to pass through, and an output shaft for the output shaft. through the second shaft hole 9. A first bearing seat 13 and a second bearing seat 12 are arranged in the cavity of the rear box body 1 , the first shaft hole 5 is arranged on the axis of the first bearing seat 13 , and the second shaft hole 9 is arranged on the first bearing seat 13 . Two bearing seats with 12 axes. Several reinforcing ribs 10 are arranged between the first bearing seat 13 and the cavity wall of the rear box body 1 , and the second bearing seat 12 is connected to the cavity wall of the rear box body 1 and the first bearing seat 13 through the reinforcing ribs. Connecting the first bearing seat 13 and the second bearing seat 12 by the reinforcing ribs 10 can not only ensure sufficient strength of the rear box structure, but also save materials and reduce the weight of the rear box. The outer edge of the cavity wall of the rear box body 1 is evenly distributed with a number of mounting holes 6 for connecting the front box body. connect. An axially extending oil groove 2 is provided on the inner side of the cavity wall 7 at the lower end of the rear box body 1 , and the cross section of the oil groove 2 is arc-shaped. An oil storage cavity 3 is provided at the lower end of the rear side of the rear box body 1 , the oil storage cavity 3 communicates with the oil tank 2 , and the bottom of the oil storage cavity 3 is lower than that of the oil tank 2 . The arc-shaped oil groove 2 has no dead angle, which is more conducive to the driving of the iron filings by the lubricating oil, so that the iron filings can enter the oil storage cavity 3 smoothly. After the bottom of the oil storage cavity 3 is lower than the bottom of the oil tank 2, it can facilitate the sinking of iron filings, and the oil storage cavity 3 extends backward and communicates with the inner cavity of the rear box. The cavity wall 7 at the upper end of the rear box body 1 is a horizontal straight wall 7-1 that is cut flat. The upper and lower ends of the rear box body 1 are respectively provided with two lifting lugs. The lower ends of 4 are all provided with a plane 4-1. The cavity on the front side of the rear box body 1 is provided with a stop 11 for installing the ring gear, and the stop 11 forms the positioning of the ring gear, which facilitates the installation of the ring gear.

During use, the iron filings produced by the gear wear will fall into the oil groove 2 at the lower end of the rear case body 1, and the iron filings in the oil groove 2 will move to the rear side of the rear case body 1 driven by the lubricating oil. in the oil storage chamber 3. In this way, the accumulation of iron filings in the rear casing can be avoided, the normal operation of the gears is ensured, the meshing between the gears is good, and the service life of the gears in the gear box is prolonged. The provided oil storage chamber 3 can not only be used to deposit iron filings, but also can be used to adjust the storage of lubricating oil in the gear box, so as to ensure a sufficient amount of lubricating oil, so that the working environment of the gear is better. At the same time, the cavity wall 7 at the upper end of the rear box body 1 is a horizontal straight wall 7-1, which can save materials for the production of a large-volume rear box, reduce the weight of the rear box, and is more conducive to the handling of the rear box. . Moreover, the horizontal straight wall 7-1 can also be used as a reference plane to facilitate the installation of the rear box, and is more conducive to the arrangement and assembly of the observation cover of the rear box. The rear box structure is provided with two upper lifting lugs 8 and two lower lifting lugs 4, wherein the two upper lifting lugs 8 can realize the hoisting of the rear box body and the hoisting of the whole machine assembly, and the two lower lifting lugs 4 can realize the rear The individual turning of the box body and the turning of the whole machine assembly provide convenience for the use of the rear box body. Moreover, the plane 4-1 at the lower end of the two lower lifting lugs 4 of the rear box is a machined plane, and the plane 4-1 is more conducive to the support of the gearbox and ensures the stable placement of the gearbox during transportation and installation.

Claims (4)

1. The utility model provides a back box structure of wind-powered electricity generation gear box, includes back box body (1), back box body (1) is equipped with first shaft hole (5) that supply the jackshaft to pass, and second shaft hole (9) that supply the output shaft to pass, the chamber wall of back box body (1) is outer along evenly distributed has a plurality of mounting holes (6) that are used for connecting the preceding box, its characterized in that: the utility model discloses a rear box body, including rear box body (1), cavity wall, back box body (1), cavity wall inboard of rear box body (1) lower extreme is equipped with an axial extension's oil groove (2), and the lower extreme of rear box body (1) rear side sets up an oil storage chamber (3), oil storage chamber (3) communicate with each other with oil groove (2), the chamber bottom in oil storage chamber (3) is less than the tank bottom of oil groove (2), the cavity wall of rear box body (1) upper end is for being the straight wall of level (7-1) of cutting the platykurtic, the upper and lower extreme of rear box body (1) sets up two lugs respectively, and wherein, the lower extreme of lug (4) all.

2. The rear box structure of the wind power gearbox as set forth in claim 1, wherein: the cross section of the oil groove (2) is arc-shaped.

3. The rear box structure of the wind power gearbox as set forth in claim 1, wherein: and a spigot (11) for mounting a gear ring is arranged at the cavity opening at the front side of the rear box body (1).

4. The rear box structure of the wind power gearbox as set forth in claim 1, wherein: the rear box body is characterized in that a first bearing seat (13) and a second bearing seat (12) are arranged in the cavity of the rear box body (1), the first shaft hole (5) is formed in the shaft center of the first bearing seat (13), the second shaft hole (9) is formed in the shaft center of the second bearing seat (12), a plurality of reinforcing ribs (10) are arranged between the first bearing seat (13) and the cavity wall of the rear box body (1), and the second bearing seat (12) is connected with the cavity wall of the rear box body (1) and the first bearing seat (13) through the reinforcing ribs.

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