CN214578773U

CN214578773U - Gearbox shell and wind power gearbox

Info

Publication number: CN214578773U
Application number: CN202120549566.5U
Authority: CN
Inventors: 王福亮
Original assignee: Zf Tianjin Wind Power Co ltd
Current assignee: Zf Tianjin Wind Power Co ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-11-02
Anticipated expiration: 2031-03-17

Abstract

The utility model provides a gear box casing and wind-powered electricity generation gear box, the gear box casing includes central through-hole, the gear box casing is including being located the lower casing of central through-hole below, the casing is including keeping away from down the bottom surface of central through-hole and respectively with the bottom surface links to each other and relative first lateral wall and the second lateral wall that sets up, the bottom surface is 90-alpha with the contained angle of first lateral wall, and wherein, alpha is when the gear box operates the axis of central through-hole and the contained angle of horizontal plane. Through the improvement to the lateral wall of lower casing and bottom surface contained angle for the gear box is under operating condition, and the lateral wall can be perpendicular or be close to the perpendicular to horizontal plane, has accelerated the lubricating oil return to the oil bath in.

Description

Gearbox shell and wind power gearbox

Technical Field

The utility model relates to a gear box casing and gear box, in particular to gear box casing and contain wind-powered electricity generation gear box of this gear box casing convenient to oil return.

Background

The wind power gear box is an important component for realizing high-efficiency power generation of a wind power generation system. In operation, the wind power gearbox is not placed parallel to the horizontal plane, but inclined at an angle (angle between the rotation axis of the gearbox and the horizontal plane) to the horizontal plane, for example 6 deg., depending on the operational requirements (see fig. 1). This inclined placement results in the bottom 10 of the gearbox housing forming a sump area where lubricating oil tends to collect at the bottom 10, for example at the lower right corner of the gearbox housing 1 in fig. 1. In this case, at least a part of the heater 2 provided in the gear case housing is easily exposed above the lubricant level, so that the portion of the heater 2 exposed to the outside of the lubricant is easily overheated, eventually causing damage to the heater. Furthermore, due to the inclined placement of the gearbox, the side walls 11 of the gearbox housing 1 are not perpendicular to the horizontal plane, which makes it difficult to return lubricating oil, in particular lubricating oil with a high viscosity at low temperatures.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a placing and the structure of solving among the prior art gearbox housing make lubricating oil return difficulty, heater expose easily and lead to overheated defect above the lubricating oil liquid level, provide an oil return easy and the heater is difficult to expose gearbox housing and wind-powered electricity generation gear box above the lubricating oil liquid level.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a gear box casing, gear box casing includes central through-hole, its characterized in that, gear box casing is including being located the lower casing of central through-hole below, the casing is including keeping away from down the bottom surface of central through-hole and respectively with first lateral wall and the second lateral wall that the bottom surface links to each other, first lateral wall with the second lateral wall is relative, the second lateral wall perpendicular to the bottom surface, the contained angle of bottom surface and first lateral wall is 90-alpha, and wherein, alpha is the gear box during operation the axis of central through-hole and the contained angle of horizontal plane. Therefore, the first side wall can be perpendicular to the horizontal plane when the gearbox works normally, and oil return of lubricating oil is facilitated.

Preferably, the first side wall is provided with a heater mounting interface near the bottom surface into which a heater is inserted.

Preferably, the heater is parallel to the horizontal plane when the gearbox is in operation.

Preferably, the upper edge of the heater is lower than the level of the lubricating oil in the lower case when the gear box is operated.

Preferably, α is 5 ° -10 °; more preferably, α is 6 ° -8 °.

Preferably, the first side wall is provided with an oil pump suction port connected with an oil pump at a position close to the bottom surface.

The utility model also provides a wind-powered electricity generation gear box, its characteristics lie in, it includes as above the gear box casing.

The utility model discloses the technological effect who obtains is:

through the improvement to the lateral wall of lower casing and bottom surface contained angle for the gear box is under operating condition, and the lateral wall can be perpendicular or be close to the perpendicular to horizontal plane, has accelerated the lubricating oil return to the oil bath in.

Drawings

FIG. 1 shows a cross-sectional view of a prior art gearbox housing;

fig. 2 is a cross-sectional view of a gearbox housing according to an embodiment of the present invention.

Detailed Description

The following further describes embodiments according to the present invention with reference to the accompanying drawings.

Referring to fig. 2, the gearbox housing 100 of the present invention includes a central through hole 1001. The axis of the central through hole 1001, which is also the rotation shaft of the gear box, is indicated by a broken line a. The gearbox housing 100 further comprises a lower housing located below the central through hole, the lower housing comprises a bottom surface 103 far away from the central through hole and a first side wall 101 and a second side wall 102 connected with the bottom surface 103 respectively, the first side wall 101 is opposite to the second side wall 102, the second side wall 102 is perpendicular to the bottom surface 103, the bottom surface 103 is arranged in parallel with the axis A, and the included angle between the bottom surface 103 and the first side wall 101 is 90-alpha, wherein alpha is the included angle between the axis A of the central through hole and a horizontal plane H when the gearbox is in operation, so that when the gearbox housing 100 is obliquely placed, the first side wall 101 is perpendicular to the ground. Wherein α is 5 ° to 10 °. In a preferred embodiment, α is 6 °.

Specifically, the first sidewall 101 is provided with a heater mounting interface near the bottom surface 103, into which the heater 20 is inserted. The length of the heater 20 is parallel to the horizontal plane when the gearbox is in operation.

In a preferred embodiment, the upper edge of the heater 20 is immersed in the lubricant in the lower housing when the gearbox is in operation, i.e. the level of the lubricant is higher than or equal to the upper edge of the heater. Due to the sharp angle design of the first side wall 101 and the bottom surface 103, the lubricant oil is more likely to accumulate at the junction of the first side wall 101 and the bottom surface 103 to form an oil pool, and the upper edge of the heater 20 is immersed in the oil pool formed by the lubricant oil, so that the risk of local overheating of the heater due to local exposure of the heater above the lubricant oil level is reduced.

In addition, the first side wall 101 is provided with an oil pump suction port connected with an oil pump near the bottom surface 103.

The utility model also provides a wind-powered electricity generation gear box, included as above gear box casing 100, the first side wall 101 that perpendicular to ground set up when the gear box slope was placed has made things convenient for the oil return of lubricating oil to the setting that is on a parallel with the horizontal plane of heater 20 makes the heater submergence in lubricating oil completely more easily, and has avoided local overheat.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides a gear box casing, gear box casing includes central through-hole, its characterized in that, gear box casing is including being located the lower casing of central through-hole below, the casing is including keeping away from down the bottom surface of central through-hole and respectively with first lateral wall and the second lateral wall that the bottom surface links to each other, first lateral wall with the second lateral wall is relative, the second lateral wall perpendicular to the bottom surface, the contained angle of bottom surface and first lateral wall is 90-alpha, and wherein, alpha is the gear box during operation the axis of central through-hole and the contained angle of horizontal plane.

2. The gearbox housing of claim 1, wherein the first sidewall is provided with a heater mounting interface proximate the bottom surface into which a heater is inserted.

3. The gearbox housing of claim 2, wherein the heater is parallel to a horizontal plane when the gearbox is in operation.

4. The gearbox housing of claim 2, wherein the upper edge of the heater is below the level of the lubricant in the lower housing when the gearbox is in operation.

5. A gearbox housing as claimed in any one of claims 1 to 4, characterised in that α -5 ° -10 °.

6. The gearbox housing according to any one of claims 1 to 4, wherein the first side wall is provided with an oil pump suction port for connection to an oil pump near the bottom surface.

7. Wind power gearbox, characterized in that it comprises a gearbox housing according to any of claims 1-6.