CN211039622U - Wind-powered electricity generation gear box seal structure - Google Patents

Abstract

The utility model discloses a wind-powered electricity generation gear box seal structure belongs to wind-powered electricity generation gear box technical field. Wind-powered electricity generation gear box seal structure includes the gear box and wears to establish rotation axis on the gear box, the outside lid of gear box has closed through the lid, it is provided with the oil gallery to cover thoroughly, pass through the lid set up in on the rotation axis, just on the rotation axis with oil gallery corresponds position department and is provided with and gets rid of the oil groove, lie in on the rotation axis gear box and pass through and locate to be provided with the oil slinger between the lid. The oil slinger and the oil slinger are designed separately, so that the oil slinger is positioned at the inner side of the transparent cover, namely positioned in the gear box, lubricating oil seeped from a gap between the oil slinger and the transparent cover can flow back to the box body, and hydraulic oil seeped from a junction surface of the oil slinger and a rotating shaft can be thrown to an oil return groove on the transparent cover and flow back to the gear box; the oil slinger has the advantages that the structure optimization of the oil slinger can shorten the axial size of the oil slinger and reduce the processing difficulty of an oil slinger.

Description

Wind-powered electricity generation gear box seal structure

Technical Field

The utility model relates to a wind-powered electricity generation gear box technical field especially relates to a wind-powered electricity generation gear box seal structure.

Background

How to solve the oil leakage problem of the wind power main gear box is always a difficult problem in the industry, in an existing sealing structure of the wind power main gear box, the structural diagram is shown in fig. 1, a rotating shaft 1' is installed on a gear box body 2', an oil slinger 3 ' is arranged on the rotating shaft 1', a transparent cover 4 ' is covered on the outer side of the gear box body 2' to seal the gear box body 2', the oil slinger 3 ' is provided with an oil slinger groove 5 ' along the circumferential direction, the transparent cover 4 ' is correspondingly provided with an oil return groove 6 ', and leaked oil is thrown into the oil return groove 6 ' on the transparent cover 4 ' from the oil slinger groove 5 ' of the oil slinger 3 ' and flows back to the inside of the gear box.

The oil slinger 3 ' is exposed outside the gear box by the structure, the interference magnitude of the assembly of the oil slinger 3 ' and the rotating shaft 1' is easily influenced by the external environment and temperature, and oil leakage occurs. And the oil slinger 3 ' is exposed outside the gear box, so that the oil slinger 3 ' is interfered by the external environment for a long time, the failure of the oil slinger 3 ' can be caused, and the reliability is low. In addition, the oil slinger 3 'is provided with the oil slinger 5' with a longer axial length, so that the oil slinger 3 'has a space for processing the oil slinger 5'. And the oil slinger 3 'is a thin-walled part, the processing precision and form and position tolerance of the oil slinger are controlled to be high in difficulty, and if the through cover 4' is arranged on the oil slinger 3 ', the gap between the oil slinger 3' and the through cover 4 'is not easy to control, so that potential leakage risk exists, the wall of the oil slinger 3' is thin, the processing difficulty of processing the oil slinger groove 5 'on the oil slinger 3' is high, and the processing cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind-powered electricity generation gear box seal structure to solve the oil slinger on the wind-powered electricity generation gear box among the prior art and expose in the gear box outside, the oil leakage appears easily, and the fluid of seepage can't flow back to the problem in the gear box when the oil leakage.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a wind-powered electricity generation gear box seal structure, includes the gear box and wears to establish rotation axis on the gear box, the outside lid of gear box has closed through the lid, it is provided with oil return tank to cover thoroughly, pass through the lid set up in on the rotation axis, just on the rotation axis with oil return tank corresponds position department and is provided with and gets rid of the oil groove, lie in on the rotation axis the gear box with it is provided with the oil slinger to pass through between the lid.

Optionally, a bearing is arranged between the gearbox body and the rotating shaft.

Optionally, the oil slinger comprises a positioning part for contacting with the bearing to realize self positioning, and a baffle part for blocking oil, wherein the outer diameter of the baffle part is larger than that of the positioning part.

Optionally, a sealing adhesive layer is disposed between the oil slinger and the bearing, and between the oil slinger and the rotating shaft.

Optionally, the oil slinger is in interference fit with the rotating shaft, and the bearing is in interference fit with the rotating shaft.

Optionally, get rid of the oil groove and be a plurality of, and a plurality of get rid of the oil groove and follow the axial interval distribution of rotation axis.

Optionally, the rotating shaft is a turret input shaft, a high-speed shaft or a pipe shaft.

The utility model has the advantages that:

the oil slinger is not arranged on the oil slinger, but is separately designed, the oil slinger is arranged on the rotating shaft, the through cover is directly arranged on the rotating shaft, and the oil slinger is arranged on the rotating shaft and is positioned between the gear box body and the through cover, so that the oil slinger is positioned at the inner side of the through cover, namely inside the gear box, and the oil slinger can be prevented from being influenced by the external environment to cause oil leakage due to the reliability; even if oil leakage occurs, the oil slinger groove and the oil slinger are designed in a split mode, the oil slinger groove is arranged on the rotating shaft, and when hydraulic oil seeps out of a joint surface of the oil slinger and the rotating shaft, the hydraulic oil can be thrown to the oil return groove in the through cover through the oil slinger groove in the rotating shaft and finally flows back to the gear box;

an oil throwing groove is not required to be arranged on the oil throwing ring, so that the structure of the oil throwing ring is optimized, the axial size of the oil throwing ring can be shortened, and the structure is more compact;

need not set up on the oil slinger and get rid of the oil groove, but process on the rotation axis and get rid of the oil groove, compare in processing on such thin wall spare of oil slinger and get rid of the oil groove, greatly reduced the processing degree of difficulty, and need not set up on the oil slinger and get rid of the oil groove and make the structural strength of oil slinger promote greatly.

Drawings

FIG. 1 is a schematic structural view of a prior art wind power gearbox seal structure;

FIG. 2 is a schematic structural view of the sealing structure of the wind power gear box of the present invention;

fig. 3 is a schematic structural diagram of the oil slinger of the present invention.

In the figure:

1', 1-rotation axis; 2', 2-gearbox housing; 3', 3-oil slinger; 4', 4-transparent cover; 5', 5-oil throwing groove; 6', 6-oil return groove; 7-a bearing; 8-sealing adhesive layer;

31-a positioning section; 32-baffle portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. 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 of the structures related to the present invention are shown in the drawings, not all of the structures.

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.

The utility model provides a wind-powered electricity generation gear box seal structure, fig. 2 is the utility model discloses wind-powered electricity generation gear box seal structure's structural schematic, as shown in fig. 2, the utility model discloses wind-powered electricity generation gear box seal structure includes gear box 2 and wears to establish rotation axis 1 on gear box 2, gear box 2's outside lid has closed through lid 4, be provided with oil gallery 6 on passing through lid 4, pass through lid 4 and set up on rotation axis 1, pass through lid 4 directly and the installation of laminating of rotation axis 1 promptly, and correspond position department with oil gallery 6 on the rotation axis 1 and be provided with and get rid of oil groove 5, the oil stream of seepage flows to in getting rid of oil groove 5, then is got rid of in oil gallery 6, oil gallery 6 and the inside intercommunication of gear box, the fluid of seepage can.

As shown in fig. 1 and 2, in the prior art, a through cover 4 ' is disposed on an oil slinger 3 ' to directly expose the oil slinger 3 ' outside the gear box, and an oil slinger groove 5 ' is formed on the surface of the oil slinger 3 '. And the utility model discloses as shown in fig. 2, pass through lid 4 and directly set up on rotation axis 1, and oil slinger 3 then is located between passing through lid 4 and gear box 2, can make like this pass through lid 4 and shelter from oil slinger 3, makes oil slinger 3 be located inside the gear box, has just so avoided external environment to oil slinger 3's influence, avoids influencing oil slinger 3's reliability, prevents to take place the oil leak between oil slinger 3 and the rotation axis 1. In addition, even if oil leakage occurs between the oil slinger 3 and the rotating shaft 1, the leaked oil can flow into the oil slinger 5, and then is thrown into the oil return groove 6 to flow back into the gear box.

In addition, the oil leaked from the gap between the oil slinger 3 and the through cover 4 can also flow back to the interior of the gear box from the oil slinger 5.

Can know by the comparison of fig. 1 and fig. 2, the utility model discloses well oil slinger 3 is last need not to set up oil slinger 5, makes the great shortening of axial length of oil slinger 3 for overall structure is compacter.

In addition, compare in prior art on such thin wall spare of oil slinger 3 ' processing get rid of oil groove 5 ', this real novel processing that need not on oil slinger 3 gets rid of oil groove 5 that has need not, greatly reduced the processing degree of difficulty, and need not set up on oil slinger 3 and get rid of oil groove 5 and make oil slinger 3's structural strength promote greatly.

In one embodiment, the rotation of the rotating shaft 1 on the gearbox housing 2 may be achieved by means of a bearing 7, as shown in fig. 2, the bearing 7 being arranged between the gearbox housing 2 and the rotating shaft 1, the bearing 7 being any kind of bearing, such as a cylindrical roller bearing.

The rotating shaft 1 is mounted on the gear case 2 through a bearing 7, and as shown in fig. 2, the oil slinger 3 is directly abutted against the bearing 7 at the right end to position the oil slinger during mounting. In one embodiment, as shown in fig. 3, the oil slinger 3 comprises a positioning part 31 for contacting with the bearing 7 to realize self positioning and a baffle part 32 for blocking oil, the outer diameter of the baffle part 32 is larger than that of the positioning part 31, and the smaller outer diameter of the positioning part 31 can save the material of the oil slinger 3, save the cost and lighten the whole weight.

As shown in fig. 2, an accommodating space for accommodating the oil slinger 3 is required to be arranged at the right end of the transparent cover 4 to avoid the oil slinger 3, the oil slinger 3 is positioned between the transparent cover 4 and the bearing 7, and the bearing 7 cannot have an avoiding space for avoiding the oil slinger 3, so that the avoiding space is arranged on the transparent cover 4, but the edge of the oil slinger 3 must be abutted against the edge of the avoiding space, so that the sealing can be realized, and the oil leakage is avoided.

Further, a sealing glue layer 8 can be arranged between the oil slinger 3 and the bearing 7 and between the oil slinger 3 and the rotating shaft 1, and the gap between the oil slinger 3 and the bearing 7 as well as the gap between the oil slinger and the rotating shaft 1 are sealed through a sealant, so that the sealing effect is further improved, and oil leakage is prevented.

Preferably, the oil slinger 3 is in interference fit with the rotating shaft 1, the bearing 7 is in interference fit with the rotating shaft 1, the interference fit can prevent oil leakage, pretightening can be generated during assembly, and the effect of assembly fixation is further improved.

As shown in fig. 2, preferably, the oil slinger 5 is a plurality of oil slingers 5, and the plurality of oil slingers 5 are distributed at intervals along the axial direction of the rotating shaft 1. Generally, two oil slingers 5 are provided.

The utility model discloses in, rotation axis 1 can be for any axle on the wind-powered electricity generation gear box, for example can be for revolving rack input shaft, high-speed shaft or hollow shaft, and any kind of axle on the wind-powered electricity generation gear box can all use the utility model discloses a seal structure realizes sealedly.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (3)

1. A wind power gear box sealing structure comprises a gear box body (2) and a rotating shaft (1) penetrating through the gear box body (2), wherein a transparent cover (4) is covered on the outer side of the gear box body (2), an oil return groove (6) is formed in the transparent cover (4), the wind power gear box sealing structure is characterized in that the transparent cover (4) is arranged on the rotating shaft (1), an oil throwing groove (5) is formed in the position, corresponding to the oil return groove (6), of the rotating shaft (1), and an oil throwing ring (3) is arranged between the gear box body (2) and the transparent cover (4) on the rotating shaft (1);

a bearing (7) is arranged between the gearbox body (2) and the rotating shaft (1);

the right end of the oil slinger (3) is abutted against the bearing (7);

the oil slinger (3) comprises a positioning part (31) for contacting with the bearing (7) to realize self positioning, and a baffle part (32) for blocking oil, wherein the outer diameter of the baffle part (32) is larger than that of the positioning part (31);

sealing glue layers (8) are arranged between the oil slinger (3) and the bearing (7) and between the oil slinger (3) and the rotating shaft (1);

the right end of the transparent cover (4) is provided with an accommodating space for accommodating the oil slinger (3) so as to avoid the oil slinger (3);

the oil slinger (3) is in interference fit with the rotating shaft (1), and the bearing (7) is in interference fit with the rotating shaft (1).

2. The wind power gear box sealing structure according to claim 1, characterized in that the oil throwing grooves (5) are arranged in a plurality of strips, and the oil throwing grooves (5) are distributed at intervals along the axial direction of the rotating shaft (1).

3. The wind power gearbox sealing structure according to claim 1, characterized in that the rotating shaft (1) is a turret input shaft, a high speed shaft or a pipe shaft.

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