Combined sealing end cover for input shaft and output shaft of wind power gear box

Abstract

The utility model provides a wind power gear box input and output shaft combined sealing end cover, which comprises a wind power gear box main body and a sealing end cover main body fixed on the wind power gear box main body, the wind power gear box main body is provided with an installation part used for installing the sealing end cover main body, a second bearing part is embedded and fixed in the installation part, and the sealing end cover main body is fixed on the second bearing part. A shaft body is embedded in the mounting part, a first bearing part corresponding to the second bearing part fixedly sleeves the shaft body, an oil guide groove is formed in the inner wall of the sealing end cover main body, and a pipeline mechanism connected with the second bearing part is arranged on the outer wall of the sealing end cover main body; an oil throwing block tightly connected to the shaft body in a sleeving mode is embedded in the oil guide groove, and bolts are embedded in the side wall of the mounting part in an annular array mode, so that the oil leakage amount of the bearing in the rotating process of the shaft body is reduced, the service life and the replacement period of a framework oil seal in the bearing are prolonged, and long-term outdoor work of the bearing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing end covers, in particular to a combined sealing end cover for input and output shafts of a wind power gear box. Background Art

[0002] The bearings on the input (output) shaft of the wind turbine gearbox require a large amount of lubricating oil for lubrication and cooling during operation. Since there is a certain gap between the rotating shaft and the end cover, the lubricating oil will leak out from the gap. Therefore, the reliability of the seal is directly related to the reliability of the gearbox and the service life of the bearing. Sealing is usually achieved by using a skeleton oil seal. This method can temporarily ensure the sealing effect in a short period of time due to its structure, rubber elasticity and spring ring. However, due to the close contact between the rubber and the shaft, it is easy to generate heat, wear and age. When oil leakage occurs, the coupling and other parts must be removed for replacement. The replacement process is complicated, and frequent replacement of skeleton oil seals is not conducive to long-term work in the field. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the prior art and provide a combined sealing end cover for the input and output shafts of a wind turbine gearbox, which realizes the function of returning the leaked lubricating oil through the oil guide groove and oil throwing block structure in the sealing end cover body in conjunction with the oil return pipe and oil filling pipe structure, thereby solving the problem of being unfavorable for long-term outdoor work due to oil leakage.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind turbine gearbox input and output shaft combined sealing end cover, comprising a wind turbine gearbox main body and a sealing end cover main body fixed on the wind turbine gearbox main body, the wind turbine gearbox main body is provided with a mounting portion for installing the sealing end cover main body, a second bearing portion is embedded and fixed in the mounting portion, and a shaft body is embedded in the mounting portion, a first bearing portion corresponding to the second bearing portion is fixedly sleeved on the shaft body, an oil guide groove is provided on the inner wall of the sealing end cover main body, and a pipeline mechanism connected to the second bearing portion is provided on the outer wall of the sealing end cover main body, and an oil throwing block tightly sleeved on the shaft body is embedded in the oil guide groove.

[0005] Preferably, bolts are embedded in the side wall of the mounting portion in an annular array, and one end of the bolts passes through the sealing end cover body and is threadedly sleeved with a nut.

[0006] Furthermore, a skeleton oil seal is embedded in the middle distance of the installation part, and two skeleton oil seals are respectively arranged on both sides of the first bearing part and are slidably connected to the shaft body.

[0007] Furthermore, a lubrication groove is provided between the first bearing portion and the second bearing portion, and a plurality of balls are installed in the lubrication groove in an annular array.

[0008] Furthermore, the pipeline mechanism includes an oil return pipe fixed to the outer wall of the sealing end cover body and an oil filling pipe fixed to the outer wall of the mounting portion.

[0009] Furthermore, the top end of the oil return pipe is obliquely provided with an inclined portion connected to the oil filling pipe, and the top end of the oil filling pipe is installed with a solenoid valve.

[0010] Furthermore, a through hole is formed on the outer wall of the second bearing portion, and two ends of the through hole are respectively connected to the oil filling pipe and the lubrication groove.

[0011] The beneficial effects of the utility model are:

[0012] (1) The utility model fixes a sealing end cover body on the side wall of the mounting portion, and an oil-slinging block tightly fitted on the shaft body is embedded in the oil guide groove on the inner wall of the sealing end cover body. The shaft body drives the oil-slinging block to rotate synchronously during rotation. When the oil in the lubrication groove passes through the skeleton oil seal and leaks, the centrifugal force generated by the oil-slinging block during rotation throws the leaked oil along the oil guide groove to the top of the oil return pipe, and then flows back to the lubrication groove along the inclined portion and the oil filling pipe, thereby greatly reducing the oil leakage of the bearing during the rotation of the shaft body, improving the service life and replacement cycle of the skeleton oil seal in the bearing, and facilitating the long-term operation of the bearing outdoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the installation part of the utility model;

[0015] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0016] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0017] In the figure: 1. Wind turbine gearbox body; 2. Mounting part; 3. Shaft; 4. Sealing end cover body; 5. Bolts; 6. Skeleton oil seal; 7. Oil filling pipe; 8. Solenoid valve; 9. Inclined part; 10. Oil return pipe; 11. Oil throwing block; 12. Oil guide groove; 13. Ball; 14. Lubrication groove; 15. First bearing part; 16. Second bearing part; 17. Through hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] Embodiment 1

[0021] like Figure 1 and Figure 3 As shown, this embodiment provides a combined sealing end cover of the input and output shafts of a wind turbine gearbox, comprising a wind turbine gearbox body 1 and a sealing end cover body 4 fixed on the wind turbine gearbox body 1, the wind turbine gearbox body 1 is provided with a mounting portion 2 for mounting the sealing end cover body 4, a second bearing portion 16 is embedded and fixed in the mounting portion 2, and a shaft body 3 is embedded in the mounting portion 2, a first bearing portion 15 corresponding to the second bearing portion 16 is fixedly sleeved on the shaft body 3, an oil guide groove 12 is provided on the inner wall of the sealing end cover body 4, and a pipeline mechanism connected to the second bearing portion 16 is provided on the outer wall of the sealing end cover body 4, and an oil throwing block 11 tightly sleeved on the shaft body 3 is embedded in the oil guide groove 12.

[0022] A lubrication groove 14 is provided between the first bearing portion 15 and the second bearing portion 16, and a plurality of balls 13 are installed in the lubrication groove 14 in an annular array. The pipeline mechanism includes an oil return pipe 10 fixed to the outer wall of the sealing end cover body 4 and an oil injection pipe 7 fixed to the outer wall of the mounting portion 2. The top of the oil return pipe 10 is obliquely provided with an inclined portion 9 connected to the oil injection pipe 7. The top of the oil injection pipe 7 is installed with an electromagnetic valve 8, and the electromagnetic valve 8 keeps the top of the oil injection pipe 7 in a sealed state. A through hole 17 is provided on the outer wall of the second bearing portion 16, and the two ends of the through hole 17 are respectively connected to the oil injection pipe 7 and the lubrication groove 14. The sealing end cover body The oil guide groove 12 on the inner wall is embedded with an oil throwing block 11 which is tightly sleeved on the shaft body 3. The shaft body 3 drives the oil throwing block 11 to rotate synchronously during rotation. When the oil in the lubrication groove 14 passes through the skeleton oil seal 6 and leaks, the centrifugal force generated by the oil throwing block 11 during rotation throws the leaked oil along the oil guide groove 12 to the top of the oil return pipe 10, and flows back to the lubrication groove 14 along the inclined portion 9 and the oil filling pipe 7, thereby greatly reducing the oil leakage of the bearing during the rotation of the shaft body 3, improving the service life and replacement cycle of the skeleton oil seal 6 in the bearing, and facilitating the long-term outdoor operation of the bearing.

[0023] Embodiment 2

[0024] like Figure 2 and Figure 4 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: the side wall of the mounting portion 2 is provided with bolts 5 in an annular array, and the bolts 5 pass through one end of the sealing end cover body 4 and are threadedly sleeved with nuts, and a skeleton oil seal 6 is embedded in the middle distance of the mounting portion 2. The two skeleton oil seals 6 are respectively arranged on both sides of the first bearing portion 15 and are slidably connected with the shaft body 3. After the nuts are unscrewed, the sealing end cover body 4 and the skeleton oil seal 6 are disassembled, which improves the convenience of disassembly and replacement of the skeleton oil seal 6. The side wall of the oil filling pipe 7 is provided with a protrusion, and the inclined portion 9 is provided with a connecting sleeve threadedly sleeved on the protrusion of the side wall of the oil filling pipe 7. After the connecting sleeve is unscrewed, the inclined portion 9 is separated from the oil filling pipe 7.

[0025] Working steps

[0026] Step 1. When in use, fix the sealing end cover body 4 on the mounting part 2, and use the bolts 5 to keep the sealing end cover body 4 fixed. The oil-slinging block 11 embedded in the oil guide groove 12 on the inner wall of the sealing end cover body 4 is tightly sleeved on the shaft body 3. The shaft body 3 drives the oil-slinging block 11 to rotate synchronously during rotation. When the oil in the lubrication groove 14 passes through the skeleton oil seal 6 and leaks, the centrifugal force generated by the oil-slinging block 11 during rotation will throw the leaked oil along the oil guide groove 12 to the top of the oil return pipe 10, and return it to the through hole 17 and the lubrication groove 14 along the inclined part 9 and the oil filling pipe 7, thereby greatly reducing the oil leakage of the bearing of the shaft body 3 during rotation, and improving the service life and replacement cycle of the skeleton oil seal 6 in the bearing, which is beneficial to the long-term operation of the bearing outdoors.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine gearbox input and output shaft combined sealing end cover, comprising a wind turbine gearbox body and a sealing end cover body fixed on the wind turbine gearbox body, characterized in that: The wind turbine gearbox body is provided with a mounting portion for mounting a sealing end cover body, a second bearing portion is embedded and fixed in the mounting portion, and a shaft body is embedded in the mounting portion, a first bearing portion corresponding to the second bearing portion is fixedly sleeved on the shaft body, an oil guide groove is provided on the inner wall of the sealing end cover body, and a pipeline mechanism connected to the second bearing portion is provided on the outer wall of the sealing end cover body, and an oil throwing block tightly sleeved on the shaft body is embedded in the oil guide groove.

2. A wind turbine gearbox input and output shaft combined sealing end cover according to claim 1, characterized in that: Bolts are embedded in the side wall of the mounting portion in an annular array, and one end of the bolts passes through the sealing end cover body and is threadedly sleeved with a nut.

3. A wind turbine gearbox input and output shaft combined sealing end cover according to claim 1, characterized in that: A skeleton oil seal is embedded in the middle distance of the installation part, and two skeleton oil seals are respectively arranged on both sides of the first bearing part and are slidably connected with the shaft body.

4. A wind turbine gearbox input and output shaft combined sealing end cover according to claim 1, characterized in that: A lubrication groove is provided between the first bearing portion and the second bearing portion, and a plurality of balls are installed in the lubrication groove in an annular array.

5. A wind turbine gearbox input and output shaft combined sealing end cover according to claim 4, characterized in that: The pipeline mechanism comprises an oil return pipe fixed on the outer wall of the sealing end cover body and an oil injection pipe fixed on the outer wall of the mounting portion.

6. A wind turbine gearbox input and output shaft combined sealing end cover according to claim 5, characterized in that: The top end of the oil return pipe is obliquely provided with an inclined portion connected to the oil injection pipe, and the top end of the oil injection pipe is installed with a solenoid valve.

7. A wind turbine gearbox input and output shaft combined sealing end cover according to claim 6, characterized in that: A through hole is formed on the outer wall of the second bearing portion, and two ends of the through hole are respectively connected to the oil filling pipe and the lubrication groove.

Images