CN110185778B - Oil return structure of output shaft of wind power gear box - Google Patents
Oil return structure of output shaft of wind power gear box Download PDFInfo
- Publication number
- CN110185778B CN110185778B CN201910557189.7A CN201910557189A CN110185778B CN 110185778 B CN110185778 B CN 110185778B CN 201910557189 A CN201910557189 A CN 201910557189A CN 110185778 B CN110185778 B CN 110185778B
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- oil
- oil return
- output shaft
- communicated
- wind power
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- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000007797 corrosion Effects 0.000 claims description 18
- 238000005260 corrosion Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 210
- 239000010687 lubricating oil Substances 0.000 description 24
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses an oil return structure of an output shaft of a wind power gear box with good sealing performance and environmental protection, which is characterized in that: the oil return device comprises a first oil return channel arranged on the left inner end of a box body, a second oil return channel and a third oil return channel which are respectively arranged on an end cover, a first oil cavity, a second oil cavity and a third oil cavity which are respectively corresponding to the first oil return channel, the second oil return channel and the third oil return channel, a first oil return mechanism, a second oil return mechanism and a connecting mechanism; the first oil return channel, the second oil return channel and the third oil return channel are not communicated with each other, and the second oil return channel and the third oil return channel are respectively communicated with the outside of the end cover in the radial direction and the axial direction; the connecting mechanism is provided with through holes corresponding to the first inlet end, the second inlet end and the outlet end respectively, one end of the first oil return mechanism is communicated with the second oil return channel, the other end of the first oil return mechanism is communicated with the first inlet end of the connecting mechanism, one end of the second oil return mechanism is communicated with the third oil return channel, and the other end of the second oil return mechanism is communicated with the second inlet end of the connecting mechanism; in the operating state, the input shaft 1 forms an operating angle a of about 5 ° with the horizontal plane of the housing 3.
Description
Technical Field
The invention relates to a wind power gear box, in particular to an oil return structure of an output shaft of the wind power gear box.
Background
The wind power gear box is a key component of the wind power generator set, an output shaft of the gear box is connected with a rotor of a generator through a flexible coupling, the rotation speed of the output shaft of the gear box is high in a working state, and the heat productivity of a bearing is high. Therefore, the cooling oil flow for the output shaft bearings is typically the largest. In actual operation, the design of a lubricating oil return structure is unreasonable, so that lubricating oil is accumulated at the position of the lubricating oil return structure and cannot return to an oil pool, and finally, redundant lubricating oil leaks out from a labyrinth seal gap, so that the external environment of the gearbox is polluted. The maintenance cost of the gearbox and the economic loss of the wind turbine generator system to stop generating due to the oil leakage can be as high as millions of yuan.
As shown in figure 1, a common oil return structure of an output shaft of a wind power gear box on the market comprises an output shaft 1, an end cover 2, a box body 3, a second labyrinth seal 8, a first labyrinth seal 7, a plug 9, a left bearing 4, a clearance adjusting ring 6 and a right bearing 5 with oil holes 6-1 on the clearance adjusting ring and the right bearing, and an oil inlet channel 11 which are respectively arranged onThe oil return device comprises a fourth oil return channel 3-4 and a first oil return channel 3-1 on a bearing shoulder 3-5 at the right end of a box body 3 and on the inner end of the left side of the box body 3, a second oil return channel 2-2 and a third oil return channel 2-3 which are respectively arranged on an end cover 2, and a first oil cavity 2-4, a second oil cavity 2-5 and a third oil cavity 2-6 which are respectively arranged on the end cover 2 and correspond to the first oil return channel 3-1, the second oil return channel 2-2 and the third oil return channel 2-3; wherein the right end of the end cover 2 is in sealing connection with the left side of the box body 3, a second labyrinth seal 8 and a first labyrinth seal 7 are assembled between the output shaft 1 and the end cover 2 in a left-right parallel and sealing abutting mode, the second labyrinth seal 8 corresponds to the third oil cavity 2-6, the first labyrinth seal 7 corresponds to the first oil cavity 2-4 and the second oil cavity 2-5, the left bearing 4 and the right bearing 5 are assembled between the output shaft 1 and the box body 3 in a left-right parallel and sealing abutting mode, the left end of the left bearing 4 is in sealing abutting mode with the right end of the first labyrinth seal 7, the right end of the right bearing 5 is in sealing abutting mode with the left end of the extending part 3-5 at the right end of the box body 3, the clearance adjusting ring 6 is arranged between the box body 3 and the outer ring at the right end of the left bearing 4 and the outer ring at the left end of the right bearing 5, the oil inlet channel 11 is positioned at the outer ring at the right end of the left bearing 4 and the outer ring at the left end of the right bearing 5 and is communicated with the oil hole 6-1 on the clearance adjusting ring 6, the first oil return channel 3-1, the second oil return channel 2-2 and the third oil return channel 2-3 are communicated with each other, the plug 9 is detachably arranged on the end cover 2 and corresponds to the third oil cavity 2-6, and in the working state, the input shaft 1 and the horizontal plane of the box body 3 form a working angle a of about 5 degrees. The wind power gear box output shaft oil return structure with the structure is characterized in that the shaft system of the gear box forms an inclined angle a of about 5 degrees with the horizontal plane in the working state, the first oil return channel 3-1, the second oil return channel 2-2 and the third oil return channel 2-3 correspond to the first oil cavity 2-4, the second oil cavity 2-5 and the third oil cavity 2-6 respectively, and the first oil return channel 3-1, the second oil return channel 2-2 and the third oil return channel 2-3 are mutually communicated, so that when the gear box works, lubricating oil passes throughOil inlet duct 11When the oil hole 6-1 on the clearance adjusting ring 6 enters the inside of the gear box to lubricate the output shaft 1, the end cover 2, the box body 3, the second labyrinth seal 8, the first labyrinth seal 7, the left bearing 4, the clearance adjusting ring 6, the right bearing 5 and the like, a part of the lubricating oil returns to the oil sump (the oil sump is the position pointed by the downward and rightward arrows in fig. 1, the following is the same) from the fourth oil return 4 through the right end of the right bearing 5,some of the lubricating oil flows into the first oil chamber 2-4 through the left end of the left bearing 4, some of the lubricating oil enters the oil pool from the first oil return passage 3-1, and the other lubricating oil flows back into the second oil chamber 2-5 through the second oil return passage 2-2 communicated with the first oil return passage 3-1. Similarly, a part of the lubricating oil in the second oil chamber 2-5 flows back into the third oil chamber 2-6 through the third oil return passage 2-3 communicated with the second oil return passage 2-2, so that the lubricating oil accumulated in the third oil chamber 2-6 gradually increases and exceeds the oil blocking capacity of the second labyrinth seal 8, and the second labyrinth seal 8 is in failure in sealing, thereby causing leakage and environmental pollution. Thus, sealability and environmental protection are poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing an oil return structure of an output shaft of a wind power gear box, which is good in sealing performance and environmental protection.
In order to solve the technical problems, the oil return structure of the output shaft of the wind power gear box is characterized in that: the device comprises an output shaft, an end cover, a box body, a second labyrinth seal, a first labyrinth seal, a left bearing, a clearance adjusting ring and a right bearing, wherein oil holes are formed in the clearance adjusting ring and the right bearing;
the right end of the end cover is connected with the left side of the box body in a sealing way;
the second labyrinth seal and the first labyrinth seal are arranged in parallel left and right, are assembled between the output shaft and the end cover in a sealing and abutting mode, and correspond to the third oil cavity;
the first labyrinth seal corresponds to the first oil cavity and the second oil cavity;
the left bearing and the right bearing are arranged between the output shaft and the box body in a left-right parallel manner, and the left end of the left bearing is abutted against the right end of the first labyrinth seal; the right end of the right bearing is abutted against the left end of the bearing shoulder at the right end of the box body;
the clearance adjusting ring is arranged between the box body and the outer ring at the right end of the left bearing and the outer ring at the left end of the right bearing; the oil inlet channel is positioned at the outer ring of the right end of the left bearing and the outer ring of the left end of the right bearing and is communicated with the oil hole on the clearance adjusting ring;
the first oil return path, the second oil return path and the third oil return path are not communicated with each other, and the second oil return path and the third oil return path are respectively communicated with the outside of the end cover in the radial direction and the axial direction;
the connecting mechanism is provided with through holes corresponding to the first inlet end, the second inlet end and the outlet end respectively, one end of the first oil return mechanism is communicated with the second oil return channel, the other end of the first oil return mechanism is communicated with the first inlet end of the connecting mechanism, one end of the second oil return mechanism is communicated with the third oil return channel, the other end of the second oil return mechanism is communicated with the second inlet end of the connecting mechanism, the outlet end of the connecting mechanism faces the oil pool, and the connecting mechanism is assembled on the outside of the box body;
in the working state, the input shaft and the horizontal plane of the box body form a working angle of about 5 degrees.
Preferably, the first oil return mechanism comprises an upper pipe joint I, an oil pipe I and a lower pipe joint I which are sequentially and hermetically connected, wherein the upper end of the upper pipe joint is in sealed communication with the second oil return channel, and the lower end of the lower pipe joint is in sealed communication with the first inlet end of the connecting mechanism.
Preferably, the oil pipe I is made of oil corrosion resistant material.
Preferably, the oil pipe I is made of an oil corrosion resistant metal material.
Preferably, the oil pipe I is made of nonmetallic materials resistant to oil corrosion.
Preferably, the second oil return mechanism comprises a connector, an upper pipe joint II, an oil pipe II and a lower pipe joint II which are sequentially and hermetically connected, one end of the connector is in sealed communication with the third oil return channel, and the lower end of the lower pipe joint II is in sealed communication with the second inlet end of the connecting mechanism.
Preferably, the oil pipe II is made of oil corrosion resistant material.
Preferably, the oil pipe II is made of an oil corrosion resistant metal material.
Preferably, the oil pipe II is made of nonmetallic materials resistant to oil corrosion.
Preferably, an annular sealing ring is arranged between the joint surface of the connecting mechanism and the box body.
The invention has the following beneficial effects;
because in the invention, the first oil return channel, the second oil return channel and the third oil return channel are not communicated with each other, the second oil return channel and the third oil return channel are respectively communicated with the outside of the end cover in the radial direction and the axial direction, through holes corresponding to the first inlet end, the second inlet end and the outlet end are respectively arranged on the connecting mechanism, one end of the first oil return mechanism is communicated with the second oil return channel, the other end of the first oil return mechanism is communicated with the first inlet end of the connecting mechanism, one end of the second oil return mechanism is communicated with the third oil return channel, the other end of the second oil return mechanism is communicated with the second inlet end of the connecting mechanism, the outlet end of the connecting mechanism faces the oil pool, and the connecting mechanism is assembled on the outside of the box body. Thus, when the gear box works, lubricating oil enters the gear box from the oil hole on the clearance adjusting ring through the oil inlet channel to lubricate the output shaft, the end cover, the box body, the second labyrinth seal, the first labyrinth seal, the left bearing, the clearance adjusting ring, the right bearing and the like, a part of lubricating oil returns to the oil tank from the fourth oil return channel through the right end of the right bearing, a part of lubricating oil flows into the first oil cavity through the left end of the left bearing, and some of the lubricating oil directly enters the oil tank from the first oil return channel and does not flow back into the second oil cavity. And the lubricating oil entering the second oil cavity also directly enters the oil pool from the second oil return channel through the first oil return mechanism and the connecting mechanism. Similarly, the lubricating oil entering the third oil cavity enters the oil pool through the second oil return mechanism and the connecting mechanism by the third oil return passage. Thus, the lubrication oil in the third oil chamber does not accumulate and gradually increases, and the oil blocking capacity of the second labyrinth seal 8 is not exceeded, and the second labyrinth seal is not in seal failure, so that leakage is caused. Thus, the sealing property and the environmental protection property are better.
Drawings
FIG. 1 is a schematic diagram of an oil return structure of an output shaft of a wind power gear box in the prior art, wherein the downward and rightward arrows in FIG. 1 point to an oil pool, and the leftward arrows point to a place communicated with air;
FIG. 2 is an enlarged schematic view of FIG. 1 at D (i.e., within a box);
FIG. 3 is a schematic diagram of the oil return structure of the output shaft of the wind power gear box, wherein the downward and rightward arrows in FIG. 3 point to an oil pool, and the leftward arrows point to a position communicated with air;
fig. 4 is a schematic view showing the connection between the first oil return mechanism, the second oil return mechanism and the connection mechanism in the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 3 and 4, the oil return structure of the wind power gear box output shaft of the invention comprises an output shaft 1, an end cover 2, a box body 3, a second labyrinth seal 8, a first labyrinth seal 7, a left bearing 4, a play adjusting ring 6 and a right bearing 5 which are provided with oil holes 6-1, a fourth oil return channel 3-4 and a first oil return channel 3-1 which are respectively arranged on a bearing shoulder 3-5 at the right end of the box body 3 and on the left inner end of the box body 3, a second oil return channel 2-2 and a third oil return channel 2-3 which are respectively arranged on the end cover 2, and a first oil cavity 2-4, a second oil cavity 2-5 and a third oil cavity 2-6 which are respectively arranged on the end cover 2 and respectively correspond to the first oil return channel 3-1, the second oil return channel 2-2 and the third oil return channel 2-3, and an oil inlet channel 11, a first oil return mechanism 12, a second oil return mechanism 13 and a connecting mechanism 14; the right end of the end cover 2 is in sealing connection with the left side of the box body 3; the second labyrinth seal 8 and the first labyrinth seal 7 are assembled between the output shaft 1 and the end cover 2 in a side-by-side and sealing and abutting mode, and the second labyrinth seal 8 corresponds to the third oil cavity 2-6; the first labyrinth seal 7 corresponds to the first oil cavity 2-4 and the second oil cavity 2-5; the left bearing 4 and the right bearing 5 are arranged between the output shaft 1 and the box body 3 in a left-right parallel manner, and the left end of the left bearing 4 is abutted against the right end of the first labyrinth seal 7; the right end of the right bearing 5 is abutted against the left end of the bearing shoulder 3-5 at the right end of the box body 3; the clearance adjusting ring 6 is arranged between the outer ring at the right ends of the box body 3 and the left bearing 4 and the outer ring at the left end of the right bearing 5; the oil inlet channel 11 is positioned at the outer ring of the right end of the left bearing 4 and the outer ring of the left end of the right bearing 5 and is communicated with the oil hole 6-1 on the clearance adjusting ring 6; the first oil return channel 3-1, the second oil return channel 2-2 and the third oil return channel 2-3 are not communicated with each other, and the second oil return channel 2-2 and the third oil return channel 2-3 are respectively communicated with the outside of the end cover 2 in the radial direction and the axial direction; the connecting mechanism 14 is provided with through holes 14-0 corresponding to the first inlet end 14-1, the second inlet end 14-2 and the outlet end 14-3 respectively, one end of the first oil return mechanism 12 is communicated with the second oil return channel 2-2, the other end of the first oil return mechanism is communicated with the first inlet end 14-1 of the connecting mechanism 14, one end of the second oil return mechanism 13 is communicated with the third oil return channel 2-3, the other end of the second oil return mechanism is communicated with the second inlet end 14-2 of the connecting mechanism 14, the outlet end 14-3 of the connecting mechanism 14 faces the oil pool, and the connecting mechanism 14 is assembled on the outside of the box body 3; in the working state, the input shaft 1 forms a working angle a of about 5 degrees with the horizontal plane of the box body 3. Thus, when the gear box is operated, in the present invention, when lubricating oil enters the gear box from the oil hole 6-1 on the play adjusting ring 6 through the oil inlet passage 11 to lubricate the output shaft 1, the end cover 2, the box 3, the second labyrinth seal 8, the first labyrinth seal 7, the left bearing 4, the play adjusting ring 6, the right bearing 5, etc., a part of the lubricating oil returns from the fourth oil return passage 4 to the oil sump (the oil sump is where the downward and rightward arrows in fig. 3 are directed and where the arrows in fig. 4 are directed, the same is the same), a part of the lubricating oil flows into the first oil chamber 2-4 through the left end of the left bearing 4, and some of the lubricating oil enters the oil sump directly from the first oil return passage 3-1 without flowing backward into the second oil return passage 2-2 and into the second oil chamber 2-5. The lubricating oil entering the second oil chamber 2-5 also directly enters the oil sump from the second oil return passage 2-2 through the first oil return mechanism 12 and the connecting mechanism 14. Likewise, the lubricating oil introduced into the third oil chamber 2-6 is introduced into the oil pool from the third oil return passage 2-3 through the second oil return mechanism 13 and the connecting mechanism 14. Thus, the lubricating oil in the third oil chamber 2-6 does not accumulate and gradually increase, and the oil blocking capacity of the second labyrinth seal 8 is not exceeded, and the second labyrinth seal 8 is not failed in sealing to cause leakage. Thus, the sealing property and the environmental protection property are better.
Referring to fig. 3 and 4, the first oil return mechanism 12 preferably includes an upper pipe joint i 12-1, an oil pipe i 12-3 and a lower pipe joint i 12-2 which are sequentially and sealingly connected, wherein the upper end of the upper pipe joint 12-1 is in sealing communication with the second oil return passage 2-2, and the lower end of the lower pipe joint 12-2 is in sealing communication with the first inlet end 14-1 of the connecting mechanism 14. This makes the structure of the first oil return mechanism 12 relatively simple.
The oil pipe I12-3 is preferably made of an oil corrosion resistant material. This allows the tubing I12-3 to be used for longer oil return. The service life is longer.
The oil pipe I12-3 is preferably made of an oil corrosion resistant metal material. This also allows the tubing I12-3 to be used for longer oil return. The service life is longer.
The tubing I12-3 is preferably made of a nonmetallic material that is resistant to oil corrosion. This allows the tubing I12-3 to be used for longer oil return. The service life is longer, and the installation and the replacement are easier.
Referring to fig. 3 and 4, the second oil return mechanism 13 includes a connector 13-0, an upper pipe joint ii 13-1, an oil pipe ii 13-3 and a lower pipe joint ii 13-2 which are sequentially and hermetically connected, wherein one end of the connector 13-0 is in sealed communication with the third oil return 2-3, and the lower end of the lower pipe joint ii 13-2 is in sealed communication with the second inlet end 14-2 of the connecting mechanism 14. This makes the structure of the first oil return mechanism 12 relatively simple. This makes the structure of the second oil return mechanism 13 relatively simple.
The oil pipe II 13-3 is made of oil corrosion resistant materials. This allows the oil line II 13-3 to be used for longer oil return. The service life is longer.
The oil pipe II 13-3 is made of an oil corrosion resistant metal material. This also allows the oil line II 13-3 to be used for longer oil returns. The service life is longer.
The oil pipe II 13-3 is made of nonmetallic materials resistant to oil corrosion. This allows the tubing I12-3 to be used for longer oil return. The service life is longer, and the installation and the replacement are easier.
Referring to fig. 4, an annular seal ring 15 is provided between the joint surface of the connecting mechanism 14 and the case 3. This results in better tightness between the connection 14 and the casing 3.
While the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. An oil return structure of an output shaft of a wind power gear box is characterized in that: the device comprises an output shaft, an end cover, a box body, a second labyrinth seal, a first labyrinth seal, a left bearing, a clearance adjusting ring and a right bearing, wherein oil holes are formed in the clearance adjusting ring and the right bearing;
the right end of the end cover is connected with the left side of the box body in a sealing way;
the second labyrinth seal and the first labyrinth seal are arranged in parallel left and right, are assembled between the output shaft and the end cover in a sealing and abutting mode, and correspond to the third oil cavity;
the first labyrinth seal corresponds to the first oil cavity and the second oil cavity;
the left bearing and the right bearing are arranged between the output shaft and the box body in a left-right parallel manner, and the left end of the left bearing is abutted against the right end of the first labyrinth seal; the right end of the right bearing is abutted against the left end of the bearing shoulder at the right end of the box body;
the clearance adjusting ring is arranged between the box body and the outer ring at the right end of the left bearing and the outer ring at the left end of the right bearing; the oil inlet channel is positioned at the outer ring of the right end of the left bearing and the outer ring of the left end of the right bearing and is communicated with the oil hole on the clearance adjusting ring;
the first oil return path, the second oil return path and the third oil return path are not communicated with each other, and the second oil return path and the third oil return path are respectively communicated with the outside of the end cover in the radial direction and the axial direction;
the connecting mechanism is provided with through holes corresponding to the first inlet end, the second inlet end and the outlet end respectively, one end of the first oil return mechanism is communicated with the second oil return channel, the other end of the first oil return mechanism is communicated with the first inlet end of the connecting mechanism, one end of the second oil return mechanism is communicated with the third oil return channel, the other end of the second oil return mechanism is communicated with the second inlet end of the connecting mechanism, the outlet end of the connecting mechanism faces the oil pool, and the connecting mechanism is assembled on the outside of the box body;
in the working state, the input shaft forms a working angle of about 5 degrees with the horizontal plane of the box body.
2. The wind power gearbox output shaft oil return structure according to claim 1, wherein: the first oil return mechanism comprises an upper pipe joint I, an oil pipe I and a lower pipe joint I which are sequentially and hermetically connected, the upper end of the upper pipe joint is hermetically communicated with the second oil return channel, and the lower end of the lower pipe joint is hermetically communicated with the first inlet end of the connecting mechanism.
3. The wind power gearbox output shaft oil return structure according to claim 2, wherein: the oil pipe I is made of oil corrosion resistant materials.
4. A wind power gearbox output shaft oil return structure according to claim 3, characterized in that: the oil pipe I is made of an oil corrosion resistant metal material.
5. The wind power gearbox output shaft oil return structure according to claim 4, wherein: the oil pipe I is made of an oil corrosion resistant nonmetallic material.
6. The wind power gearbox output shaft oil return structure according to any one of claims 1 to 5, wherein: the second oil return mechanism comprises a connector, an upper pipe joint II, an oil pipe II and a lower pipe joint II which are sequentially and hermetically connected, one end of the connector is in sealed communication with the third oil return channel, and the lower end of the lower pipe joint II is in sealed communication with the second inlet end of the connecting mechanism.
7. The wind power gearbox output shaft oil return structure according to claim 6, wherein: the oil pipe II is made of oil corrosion resistant materials.
8. The wind power gearbox output shaft oil return structure according to claim 7, wherein: the oil pipe II is made of an oil corrosion resistant metal material.
9. The wind power gearbox output shaft oil return structure according to claim 8, wherein: the oil pipe II is made of an oil corrosion resistant nonmetallic material.
10. The wind power gearbox output shaft oil return structure according to claim 9, wherein: an annular sealing ring is arranged between the joint surfaces of the connecting mechanism and the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557189.7A CN110185778B (en) | 2019-06-25 | 2019-06-25 | Oil return structure of output shaft of wind power gear box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557189.7A CN110185778B (en) | 2019-06-25 | 2019-06-25 | Oil return structure of output shaft of wind power gear box |
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| CN110185778A CN110185778A (en) | 2019-08-30 |
| CN110185778B true CN110185778B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910557189.7A Active CN110185778B (en) | 2019-06-25 | 2019-06-25 | Oil return structure of output shaft of wind power gear box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112709888B (en) * | 2020-12-22 | 2022-05-31 | 中国北方发动机研究所(天津) | Integrated flywheel housing suitable for arrangement of rear-end superchargers of various engines |
| CN113357343A (en) * | 2021-06-11 | 2021-09-07 | 德力佳传动科技(江苏)有限公司 | Structure of generator shafting integrated in gear box |
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|---|---|---|---|---|
| JPH0921430A (en) * | 1995-07-07 | 1997-01-21 | Jatco Corp | Hydraulic clutch device and sealing structure for hydraulic circuit |
| WO2007097351A1 (en) * | 2006-02-22 | 2007-08-30 | Toyo Electric Mfg. Co., Ltd. | Bearing device for main electric motor for vehicle |
| CN108953567A (en) * | 2018-08-02 | 2018-12-07 | 湖南南方宇航高精传动有限公司 | A kind of gear-box with bubble removing labyrinth seal structure |
| CN210830401U (en) * | 2019-06-25 | 2020-06-23 | 重庆望江工业有限公司 | Wind-powered electricity generation gear box output shaft oil return structure |
-
2019
- 2019-06-25 CN CN201910557189.7A patent/CN110185778B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0921430A (en) * | 1995-07-07 | 1997-01-21 | Jatco Corp | Hydraulic clutch device and sealing structure for hydraulic circuit |
| WO2007097351A1 (en) * | 2006-02-22 | 2007-08-30 | Toyo Electric Mfg. Co., Ltd. | Bearing device for main electric motor for vehicle |
| CN108953567A (en) * | 2018-08-02 | 2018-12-07 | 湖南南方宇航高精传动有限公司 | A kind of gear-box with bubble removing labyrinth seal structure |
| CN210830401U (en) * | 2019-06-25 | 2020-06-23 | 重庆望江工业有限公司 | Wind-powered electricity generation gear box output shaft oil return structure |
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| CN110185778A (en) | 2019-08-30 |
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