CN213117275U - Damping device for base of wind driven generator - Google Patents
Damping device for base of wind driven generator Download PDFInfo
- Publication number
- CN213117275U CN213117275U CN202021883839.1U CN202021883839U CN213117275U CN 213117275 U CN213117275 U CN 213117275U CN 202021883839 U CN202021883839 U CN 202021883839U CN 213117275 U CN213117275 U CN 213117275U
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- damping
- shaft
- shell
- hole
- clearance fit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
The utility model provides a aerogenerator frame damping device. Relates to the technical field of wind power generation equipment. The lower shell is connected with the upper shell through a flange, the upper shell and the lower shell are provided with damping holes, a damping sleeve is arranged in each damping hole, a step shaft is arranged in the middle of each damping sleeve, and the upper plane and the lower plane of each step shaft are in clearance fit connection with the upper shell and the lower shell. The utility model discloses following beneficial effect has: through setting up shockproof cover and gasbag, piston, reduce the frequency and the amplitude of the horizontal vibrations of frame, through setting up spring, hydraulic damping, reduce the frequency and the amplitude of the vertical direction vibrations of frame to form all-round absorbing effect, be connected through the clearance fit between step axle and the casing, the nut makes dabber and shockproof cover form elastic fixed connection through two springs, whole device has the connection reliably, the effectual characteristics of shock attenuation.
Description
The technical field is as follows:
the utility model relates to a wind power generation equipment technical field, concretely relates to aerogenerator frame damping device.
Background art:
the wind driven generator is an electric power device which converts wind energy into mechanical work, the mechanical work drives the rotor to rotate, and finally alternating current is output, wherein the rotor, the speed reducer and the shell jointly form a main body of the wind driven generator to form a base, so that the concentrated installation and fixation are convenient;
due to manufacturing and mounting errors, the whole power generation device can generate certain errors, certain vibration is caused in the subsequent use process, long-time vibration can possibly cause the looseness of fixed objects such as bolts fixed on the ground, frequent overhauling is needed, and the arrangement can possibly cause the integral inclination.
The utility model has the following contents:
in order to solve the problem, the utility model aims at providing a aerogenerator frame damping device.
The technical scheme of the utility model is that: a damping device for a base of a wind driven generator comprises a lower shell, wherein the lower shell is connected with an upper shell through a flange, the upper shell and the lower shell are respectively provided with a damping hole, a damping sleeve is arranged in each damping hole, a step shaft is arranged in the middle of each damping sleeve, and the upper plane and the lower plane of each step shaft are in clearance fit connection with the upper shell and the lower shell;
a section of damping shaft is arranged above and below the step shaft of the damping sleeve, the outer diameter of the damping shaft is smaller than the inner diameter of the damping hole, counter bores which are uniformly distributed on the circumference are transversely formed in the upper shell and the lower shell outside the damping hole, an air bag is arranged in each counter bore, a piston is arranged on the inner side of each air bag, the head of each piston extends out of the damping hole to be abutted against the corresponding damping shaft, and a gland is arranged on the outer side of each air bag and connected with the corresponding counter;
the inner hole of the shockproof sleeve is provided with a mandrel, the upper part of the mandrel is in clearance fit connection with the inner hole of the shockproof sleeve through a sealing ring, the middle part of a positioning shaft at the lower part of the mandrel is in clearance fit connection with the inner hole of the bulge part of the shockproof sleeve through a sealing ring, and a spring is arranged between the upper part of the bulge part and the mandrel; the lower part of the bulge is provided with a spring, the two springs are communicated through a communicating hole, and the bottom of the lower spring is provided with a nut which is in threaded connection with the positioning shaft;
the lower part of the positioning shaft, the inner hole of the shockproof sleeve is in threaded sealing connection with an end cover, and a one-way valve is arranged on the end cover;
the upper part of the mandrel is provided with an upper flange, and the lower part of the lower shell is provided with a lower flange;
a flat key II arranged on the mandrel is in clearance fit connection with a key groove of the shockproof sleeve;
the step shaft is provided with a flat key I which is in clearance fit connection with a key groove of the lower shell.
The outer diameter of the damping shaft is smaller than the inner diameter of the damping hole, and the gap between the damping hole and the damping shaft is larger than the transverse vibration range of the wind driven generator base.
The step shaft is provided with a flat key I which is in clearance fit connection with a key groove of the lower shell, and a rubber pad is arranged between the two side faces of the flat key I and the key groove.
The utility model discloses following beneficial effect has: through setting up shockproof cover and gasbag, piston, reduce the frequency and the amplitude of the horizontal vibrations of frame, through setting up spring, hydraulic damping, reduce the frequency and the amplitude of the vertical direction vibrations of frame to form all-round absorbing effect, be connected through the clearance fit between step axle and the casing, the nut makes dabber and shockproof cover form elastic fixed connection through two springs, whole device has the connection reliably, the effectual characteristics of shock attenuation.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view a-a of fig. 1.
In the figure, 1-a lower shell, 2-an upper shell, 3-a shock-proof sleeve, 4-a mandrel, 5-an upper flange, 6-a lower flange, 7-an end cover, 8-a gland, 9-a one-way valve, 10-a nut, 11-a spring, 12-a flat key I, 13-an air bag, 14-a piston, 15-a flat key II, 16-a communication hole, 17-a step shaft, 18-a rubber pad, 19-a shock-absorbing shaft, 20-a counter bore, 21-a shock-absorbing hole, 22-a positioning shaft and 23-a bulge.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, a damping device for a base of a wind driven generator comprises a lower shell 1, wherein the lower shell 1 is connected with an upper shell 2 through a flange, the upper shell 2 and the lower shell 1 are respectively provided with a damping hole 21, a damping sleeve 3 is arranged in the damping hole 21, a step shaft 17 is arranged in the middle of the damping sleeve 3, the upper plane and the lower plane of the step shaft 17 are in clearance fit connection with the upper shell 2 and the lower shell 1, and the step shaft 17 has a bearing function in the up-down direction of the damping sleeve 3;
a section of damping shaft 19 is arranged above and below a step shaft 17 of the damping sleeve 3, the outer diameter of the damping shaft 19 is smaller than the inner diameter of a damping hole 21, the damping sleeve 3 can move around transversely, counterbores 20 which are uniformly distributed circumferentially are transversely formed in the upper shell 2 and the lower shell 1 outside the damping hole 21, an air bag 13 is arranged in the counterbores 20, compressed air is filled in the air bag 13, a piston 14 is arranged on the inner side of the air bag 13, the head of the piston 14 extends out of the damping hole 21 to abut against the damping shaft 19, a gland 8 is arranged on the outer side of the air bag 13 and is in bolt connection with the counterbores 20 to fix the air bag 13, and the elastic air bag 13 can digest vibration energy when the damping sleeve 3 transversely vibrates;
a core shaft 4 is arranged in an inner hole of the shockproof sleeve 3, the upper part of the core shaft 4 is in clearance fit connection with the inner hole of the shockproof sleeve 3 through a sealing ring, the middle part of a positioning shaft 22 at the lower part of the core shaft 4 is in clearance fit connection with an inner hole of a bulge part 23 of the shockproof sleeve 3 through a sealing ring, and a spring 11 is arranged between the upper part of the bulge part 23 and the core shaft 4; the lower part of the bulge 23 is provided with a spring 11, the bottom of the lower spring 11 is provided with a nut 10 which is in threaded connection with a positioning shaft 22, the two springs 11 are communicated through a communicating hole 16, and the nut locks the spring to enable the mandrel and the shockproof sleeve to form elastic fixed connection, so that the connection is reliable;
the lower part of a positioning shaft 22, an inner hole of a shockproof sleeve 3 is in threaded sealing connection with an end cover 7, the end cover 7 is provided with a one-way valve 9, hydraulic oil is injected into the inner hole of the shockproof sleeve 3 through the one-way valve 9, spaces where two springs 11 are located and a communication hole 16 are filled with the hydraulic oil, when a wind driven generator base vibrates up and down, the two springs are alternately compressed and rebound to absorb vibration energy, the vibration frequency and the vibration amplitude are reduced, meanwhile, the space where the upper spring is located and the space where the lower spring is located are also alternately compressed, the hydraulic oil flows back and forth in the spaces where the two springs are located through the communication hole, the fluid viscosity of the hydraulic oil plays a role in damping, and;
the upper part of the mandrel 4 is provided with an upper flange 5, and the lower part of the lower shell 1 is provided with a lower flange 6 for mounting between the base and the foundation;
a flat key II15 arranged on the mandrel 4 is in clearance fit connection with a key groove of the shockproof sleeve 3 to prevent the mandrel 4 and the shockproof sleeve 3 from rotating;
the step shaft 17 is provided with a flat key I12 which is in clearance fit connection with a key groove of the lower shell 1 to prevent the shockproof sleeve 3 from rotating in the lower shell 1.
The outer diameter of the damping shaft 19 is smaller than the inner diameter of the damping hole 21, the gap between the damping hole 21 and the damping shaft 19 is larger than the transverse vibration range of the wind driven generator base, and when the base vibrates, the shockproof sleeve 3 cannot generate hard collision with the lower shell 1, so that the damage of the equipment caused by vibration is avoided.
Step axle 17 on be equipped with flat key I12 and the keyway clearance fit of lower casing 1 is connected, be equipped with rubber pad 18 between flat key I12 both sides face and the keyway, strengthen the shock attenuation effect.
Through setting up shockproof cover and gasbag, piston, reduce the frequency and the amplitude of the horizontal vibrations of frame, through setting up spring, hydraulic damping, reduce the frequency and the amplitude of the vertical direction vibrations of frame to form all-round absorbing effect, be connected through the clearance fit between step axle and the casing, the nut makes dabber and shockproof cover form elastic fixed connection through two springs, whole device has the connection reliably, the effectual characteristics of shock attenuation.
Claims (3)
1. The utility model provides a aerogenerator frame damping device, includes casing (1) down, its characterized in that: the lower shell (1) is connected with the upper shell (2) through a flange, the upper shell (2) and the lower shell (1) are both provided with damping holes (21), a shockproof sleeve (3) is arranged in each damping hole (21), a step shaft (17) is arranged in the middle of each shockproof sleeve (3), and the upper plane and the lower plane of each step shaft (17) are in clearance fit connection with the upper shell (2) and the lower shell (1);
a section of damping shaft (19) is arranged above and below a step shaft (17) of the damping sleeve (3), the outer diameter of the damping shaft (19) is smaller than the inner diameter of a damping hole (21), counterbores (20) which are uniformly distributed on the circumference are transversely formed in an upper shell (2) and a lower shell (1) on the outer side of the damping hole (21), an air bag (13) is arranged in the counterbores (20), a piston (14) is arranged on the inner side of the air bag (13), the head of the piston (14) extends out of the damping hole (21) to be abutted against the damping shaft (19), and a gland (8) is arranged on the outer side of the air bag (13) and is in bolt connection with the;
a core shaft (4) is arranged in an inner hole of the shockproof sleeve (3), the upper part of the core shaft (4) is in clearance fit connection with the inner hole of the shockproof sleeve (3) through a sealing ring, the middle part of a positioning shaft (22) at the lower part of the core shaft (4) is in clearance fit connection with an inner hole of a bulge part (23) of the shockproof sleeve (3) through a sealing ring, and a spring (11) is arranged between the upper part of the bulge part (23) and the core shaft (4); the lower part of the bulge (23) is provided with a spring (11), the two springs (11) are communicated through a communicating hole (16), and the bottom of the lower spring (11) is provided with a nut (10) which is in threaded connection with a positioning shaft (22);
the lower part of the positioning shaft (22) is connected with an end cover (7) in a threaded sealing manner through an inner hole of the shockproof sleeve (3), and the end cover (7) is provided with a one-way valve (9);
an upper flange (5) is arranged at the upper part of the mandrel (4), and a lower flange (6) is arranged at the lower part of the lower shell (1);
a flat key II (15) is arranged on the mandrel (4) and is in clearance fit connection with a key groove of the shockproof sleeve (3);
the step shaft (17) is provided with a flat key I (12) which is in clearance fit connection with a key groove of the lower shell (1).
2. The wind driven generator base damping device according to claim 1, characterized in that: the gap between the shock absorption hole (21) and the shock absorption shaft (19) is larger than the transverse shock range of the wind turbine base.
3. The wind driven generator base damping device according to claim 1, characterized in that: the step shaft (17) is provided with a flat key I (12) which is in clearance fit connection with a key groove of the lower shell (1), and a rubber pad (18) is arranged between the two side faces of the flat key I (12) and the key groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021883839.1U CN213117275U (en) | 2020-09-02 | 2020-09-02 | Damping device for base of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021883839.1U CN213117275U (en) | 2020-09-02 | 2020-09-02 | Damping device for base of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213117275U true CN213117275U (en) | 2021-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021883839.1U Active CN213117275U (en) | 2020-09-02 | 2020-09-02 | Damping device for base of wind driven generator |
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| Country | Link |
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| CN (1) | CN213117275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833732A (en) * | 2021-09-29 | 2021-12-24 | 阿姆特(上海)新能源科技有限公司 | Flange lock nut, reduction gear and new energy automobile |
-
2020
- 2020-09-02 CN CN202021883839.1U patent/CN213117275U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833732A (en) * | 2021-09-29 | 2021-12-24 | 阿姆特(上海)新能源科技有限公司 | Flange lock nut, reduction gear and new energy automobile |
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