CN207945052U - A kind of slideable powered shock absorption device for wind-driven generator rear base - Google Patents
A kind of slideable powered shock absorption device for wind-driven generator rear base Download PDFInfo
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- CN207945052U CN207945052U CN201820212243.5U CN201820212243U CN207945052U CN 207945052 U CN207945052 U CN 207945052U CN 201820212243 U CN201820212243 U CN 201820212243U CN 207945052 U CN207945052 U CN 207945052U
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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
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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
- Y02E10/728—Onshore wind turbines
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model is related to a kind of slideable powered shock absorption devices for wind-driven generator rear base, including knob bolts, baffle, the linear guide, sliding block, lifting lug connecting plate, U-shaped card slot and dampened power absorbing device assembly；Dampened power absorbing device assembly includes shell, the first hook, spring, damping, mass block, the second hook, the first nut, pallet, the second nut and third nut；The utility model is simple in structure, and manufacture is easy and at low cost, light-weight, is not influenced by the accuracy of manufacture, can farthest decrease or even eliminate the vibration of wind-driven generator rear base.
Description
Technical field
The utility model is related to a kind of slideable powered shock absorption devices for wind-driven generator rear base.
Background technology
As the increase of wind power generating set single-machine capacity and its residing external condition are more and more harsher, as generator
The rear base of support construction is the frame structure being welded by steel plate or rolled section steel, and overhanging is big, rigidity is small, in wind turbine
In operational process, easily there is excessive vibration, to locking, weld seam fatigue life of fastener disposed thereon and
The even running of generator produces serious influence, and is related to the safe operation of entire wind power generating set.
It is directed to the vibration reducing measure of rear base at present, independent vibration isolation mainly is carried out, to rear base reinforcement or general to generator
Equipment Forward on rear base.Since the rear base natural frequency of vibration is distributed width, and the frequency band that traditional vibration damping mode works is relatively narrow, therefore
Such measures effectiveness in vibration suppression is bad.
Existing rear base oscillation damping method mainly has three classes：The first kind, the method for taking passive vibration isolation, for example, passing through four
Generator is connect by a rubber shock absorber with rear base, to reduce the exciting force that generator passes on rear base.Second class, is adopted
Cancel the mode for removing or weakening vibration source, dynamic balance running is carried out to pivoting part, to eliminate due to inclined caused by manufacture or assembly
Centrifugal inertial force caused by the heart ensures the quiet of generator amature, dynamic balancing etc. for example, carrying out the centering of shaft coupling.Third class,
It generally moves forward as far as possible to increase its rigidity, or by auxiliary devices such as cooling systems in rear base corresponding position reinforcement, to change
Variable mass is distributed, and to change the intrinsic frequency of whole system, avoids resonance region.Although above-mentioned tradition Vibration Absorption Designing can be one
The effect of vibration isolation and damping is played in fixed frequency range, but the accuracy of manufacture will be caused to require excessively high or equipment mistake in engineering practice
In the heaviness the problems such as, and when excited frequency is higher and excited frequency wider distribution, it is difficult to reach effective vibration isolation and damping purpose,
It needs further improvement.
Utility model content
In view of the above-mentioned state of the art, the technical problem to be solved by the utility model is to provide a kind of letters of structure
Single, manufacture is easy and at low cost, light-weight, is not influenced by the accuracy of manufacture, can be by adding dampened power absorbing device assembly
Quantity weakens the vibration under different frequency, can play while inhibiting the shimmy of rear base, torsional oscillation or other vibration modes
Effect, can farthest decrease or even eliminate the vibration of wind-driven generator rear base for wind-driven generator rear base can
Slidingtype powered shock absorption device.
Technical solution is used by the utility model solves above-mentioned technical problem：One kind being used for wind-driven generator rear base
Slideable powered shock absorption device, including knob bolts, baffle, the linear guide, sliding block, lifting lug connecting plate, U-shaped card slot and resistance
Buddhist nun's dynamic absorber device assembly；It is respectively and fixedly provided with a symmetrical baffle on the outside of the both ends of the linear guide, the straight line is led
The lower outer of rail is at least arranged connection, and there are one sliding blocks, are each respectively and fixedly provided with a U-shaped card on the inner end end face of the sliding block
Slot, the U-shaped card slot are arranged the outside for being connected to the linear guide and can move back and forth along the linear guide, outside the U-shaped card slot
Intert on the side of side and be spirally connected there are one knob bolts, the end of thread of the knob bolts passes through U-shaped card slot and holds out against leads in straight line
On the side side of rail；Fixed there are one lifting lug connecting plate on the underside plan of the sliding block, the lower of the lifting lug connecting plate is put down
Lifting lug has been outwardly formed on face.
Preferably, dampened power absorbing device assembly there are one being hung on each lifting lug, the dampened power absorbing
Device assembly includes shell, the first hook, spring, damping, mass block, the second hook, the first nut, pallet, the second nut and
Three nuts；For the upper end hanging buckle of first hook on lifting lug, the lower end of first hook is formed with long bolt portion, the shell
The side of body offers cavity, and the long bolt portion sequentially passes through upper end, damping and the pallet of shell and is screwed into the second nut
In.
Preferably, the outside in the long bolt portion is also arranged with spring, and the spring is located between damping and pallet, described
The upper end of spring resists the lower end of damping, and the lower end of the spring resists the upper end of pallet, and the spring is in compression shape always
State；The damping, spring and pallet are respectively positioned on the inside of cavity.
Preferably, third nut is also bolted in the long bolt portion, the lower end of the third nut is fitted in shell
On upper end face, the upper end of the damping is fitted on the upper end inner wall of cavity.
Preferably, the lower end of the shell is interspersed is connected with the second hook, and being spirally connected on second hook, there are two first
Nut, two first nuts are fitted in respectively on the lower end inner wall and lower end outside surface of cavity；On second hook
It is linked with mass block.
Compared with prior art, the utility model has the advantage of：The utility model is simple in structure, manufacture simplicity and cost
It is low, it is light-weight, it is not influenced by the accuracy of manufacture, in addition, when occurring the exciting source with wider frequency rate band in system, Ke Yigen
According to rear base Analysis of Dynamic Characteristics as a result, two or more dampened power absorbing device assembly is arranged, to weaken difference
Vibration under frequency；Simultaneously by adjusting the weight of the position and corresponding mass block of dampened power absorbing device assembly, Ke Yiqi
To the effect for inhibiting the shimmy of rear base, torsional oscillation or other vibration modes simultaneously, wind-force can be farthest decreased or even eliminated
The vibration of generator rear base.
Description of the drawings
Fig. 1 is the installation site side view of the utility model；
Fig. 2 is the installation site front view of the utility model；
Fig. 3 is the installation site figure of the dampened power absorbing device assembly of the utility model；
Fig. 4 is the structure chart of the dampened power absorbing device assembly of the utility model.
Specific implementation mode
As shown in figures 1-4, a kind of slideable powered shock absorption device for wind-driven generator rear base, including knob
Screw 1, baffle 2, the linear guide 6, sliding block 3, lifting lug connecting plate 4, U-shaped card slot 17 and dampened power absorbing device assembly；Wind-force is sent out
It is respectively and fixedly provided with a symmetrical parallelly distribute on the underside plan of two symmetrical girders 131 on motor rear base 13
The linear guide 6, be respectively and fixedly provided with a symmetrical baffle 2, each the linear guide 6 on the outside of the both ends of each the linear guide 6
Lower outer be arranged connection there are one sliding block 3, be respectively and fixedly provided with a U-shaped card slot 17, U on the inner end end face of each sliding block 3
Type card slot 17 is arranged the outside for being connected to the linear guide 6 and can move back and forth along the linear guide 6, the outer lateral side of U-shaped card slot 17
Above interspersed to be spirally connected there are one knob bolts 1, the end of thread of knob bolts 1 passes through U-shaped card slot 17 and holds out against the one of the linear guide 6
On the side of side, to play the role of positioning；It is respectively and fixedly provided with a lifting lug connecting plate 4 on the underside plan of each sliding block 3, is hung
It has been outwardly formed lifting lug 41 on the lower plane of ear connecting plate 4, has been hung on each lifting lug 41 there are one dampened power bump leveller group
Part, dampened power absorbing device assembly include the hook of shell 5, first 16, spring 8, damping 7, the hook of mass block 12, second 11, the
One nut 10, pallet 9, the second nut 15 and third nut 14；The upper end hanging buckle of first hook 16 is on lifting lug 41, the first hook
16 lower end is formed with long bolt portion 161, and the side of shell 5 offers cavity 51, and long bolt portion 161 sequentially passes through shell 5
Upper end, damping 7 and pallet 9 are simultaneously screwed into the second nut 15, and the outside in long bolt portion 161 is also arranged with spring 8,8, spring
Between damping 7 and pallet 9, the upper end of spring 8 resists the lower end of damping 7, and the lower end of spring 8 resists the upper end of pallet 9, spring
8 are in compressive state always；Damping 7, spring 8 and pallet 9 are respectively positioned on the inside of cavity 51, are also bolted in long bolt portion 161
The lower end of third nut 14, third nut 14 is fitted on the upper end face of shell 5, and the upper end for damping 7 is fitted in cavity 51
On the inner wall of upper end；The lower end of shell 5 is interspersed to be connected with the second hook 11, is spirally connected on the second hook 11 there are two the first nut 10,
Two the first nuts 10 are fitted in respectively on the lower end inner wall and lower end outside surface of cavity 51；It is linked with matter on second hook 11
Gauge block 12；In use, wind-driven generator is mounted on the top of wind-driven generator rear base 13, wind-driven generator will produce when operating
Larger vibration, vibration pass down on two girders 131, vibrate and further will so that two girders 131 generate
Vibration is transmitted in the dampened power absorbing device assembly in two the linear guides 6, to drive the first hook 16 together with shell 5 one
Forced vibration is played, shell 5 needs to overcome the weight of mass block 12 when moving up, and then overcomes the bounce of spring 8 again, and further
Compressed spring 8, when spring 8 is compressed to a certain extent, the bounce of spring 8 acts in damping 7, damps 7 pairs of bounces and carries out
It absorbs, to play the role of vibration damping；And two sliding blocks 3 can move back and forth along the linear guide 6, it is dynamic so as to adjust two dampings
The horizontal position of power absorbing device assembly so that it is in best vibration damping position, after reaching optimum position, hand Screw knob spiral shell
Nail 1 is simple to operate to which anti-limited slip block 3 loosens with positioning U type card slot 17；In addition, when occurring that there is wider frequency in system
It, can be according to the Analysis of Dynamic Characteristics of wind-driven generator rear base 13 as a result, in each the linear guide 6 when the exciting source of rate band
Dampened power absorbing device assembly is added, to weaken the vibration under different frequency；Dampened power absorbing device assembly is adjusted with crossing to pass through
Position and corresponding mass block 12 weight, can play while inhibit the shimmy of wind-driven generator rear base 13, torsional oscillation or
The effect of other vibration modes.
As the increase of wind power generating set single-machine capacity and its residing external condition are more and more harsher, as generator
The rear base of support construction is the frame structure being welded by steel plate or rolled section steel, and overhanging is big, rigidity is small, in wind turbine
In operational process, easily there is excessive vibration, to locking, weld seam fatigue life of fastener disposed thereon and
The even running of generator produces serious influence, and is related to the safe operation of entire wind power generating set.
It is directed to the vibration reducing measure of rear base at present, independent vibration isolation mainly is carried out, to rear base reinforcement or general to generator
Equipment Forward on rear base.Since the rear base natural frequency of vibration is distributed width, and the frequency band that traditional vibration damping mode works is relatively narrow, therefore
Such measures effectiveness in vibration suppression is bad.
Existing rear base oscillation damping method mainly has three classes：The first kind, the method for taking passive vibration isolation, for example, passing through four
Generator is connect by a rubber shock absorber with rear base, to reduce the exciting force that generator passes on rear base.Second class, is adopted
Cancel the mode for removing or weakening vibration source, dynamic balance running is carried out to pivoting part, to eliminate due to inclined caused by manufacture or assembly
Centrifugal inertial force caused by the heart ensures the quiet of generator amature, dynamic balancing etc. for example, carrying out the centering of shaft coupling.Third class,
It generally moves forward as far as possible to increase its rigidity, or by auxiliary devices such as cooling systems in rear base corresponding position reinforcement, to change
Variable mass is distributed, and to change the intrinsic frequency of whole system, avoids resonance region.Although above-mentioned tradition Vibration Absorption Designing can be one
The effect of vibration isolation and damping is played in fixed frequency range, but the accuracy of manufacture will be caused to require excessively high or equipment mistake in engineering practice
In the heaviness the problems such as, and when excited frequency is higher and excited frequency wider distribution, it is difficult to reach effective vibration isolation and damping purpose.
The utility model is simple in structure, and manufacture is easy and at low cost, light-weight, is not influenced by the accuracy of manufacture, in addition, working as
In system occur with wider frequency rate band exciting source when, can according to rear base Analysis of Dynamic Characteristics as a result, setting two or
The more than two dampened power absorbing device assemblies of person, to weaken the vibration under different frequency；It is inhaled simultaneously by adjusting dampened power
The weight of the position for device assembly of shaking and corresponding mass block 12, can play while inhibit the shimmy of rear base, torsional oscillation or other
The effect of vibration mode can farthest decrease or even eliminate the vibration of wind-driven generator rear base 13.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of skill in the art that its according to
So can be with technical scheme described in the above embodiments is modified, or which part technical characteristic is replaced on an equal basis
It changes；And these modifications or replacements, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (5)
1. a kind of slideable powered shock absorption device for wind-driven generator rear base, including knob bolts, baffle, straight line are led
Rail, sliding block, lifting lug connecting plate, U-shaped card slot and dampened power absorbing device assembly；It is respectively and fixedly provided on the outside of the both ends of the linear guide
The lower outer of one symmetrical baffle, the linear guide is at least arranged sliding block there are one connections, each sliding block
Inner end end face on be respectively and fixedly provided with a U-shaped card slot, the U-shaped card slot is arranged the outside for being connected to the linear guide and can be along straight line
Guide rail moves back and forth, and knob bolts there are one being spirally connected, the screw thread of the knob bolts are interted in the outer lateral side of the U-shaped card slot
End is across U-shaped card slot and holds out against on the side side of the linear guide；It is fixed on the underside plan of the sliding block that there are one lifting lugs
Connecting plate has been outwardly formed lifting lug on the lower plane of the lifting lug connecting plate.
2. a kind of slideable powered shock absorption device for wind-driven generator rear base according to claim 1, special
Sign is, dampened power absorbing device assembly is linked on the lifting lug, and the dampened power absorbing device assembly includes shell, first
Hook, spring, damping, mass block, the second hook, the first nut, pallet, the second nut and third nut；First hook
Upper end hanging buckle on lifting lug, it is described first hook lower end be formed with long bolt portion, the side of the shell offers cavity,
The long bolt portion sequentially passes through upper end, damping and the pallet of shell and is screwed into the second nut.
3. a kind of slideable powered shock absorption device for wind-driven generator rear base according to claim 2, special
Sign is, the outside in the long bolt portion is also arranged with spring, and the spring is located between damping and pallet, the spring it is upper
End resists the lower end of damping, and the lower end of the spring resists the upper end of pallet, and the spring is in compressive state always；The resistance
Buddhist nun, spring and pallet are respectively positioned on the inside of cavity.
4. a kind of slideable powered shock absorption device for wind-driven generator rear base according to claim 2, special
Sign is, third nut is also bolted in the long bolt portion, and the lower end of the third nut is fitted in the upper end face of shell
On, the upper end of the damping is fitted on the upper end inner wall of cavity.
5. a kind of slideable powered shock absorption device for wind-driven generator rear base according to claim 2, special
Sign is, the lower end of the shell is interspersed to be connected with the second hook, is spirally connected on second hook there are two the first nut, two
First nut is fitted in respectively on the lower end inner wall and lower end outside surface of cavity；It is linked with quality on second hook
Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820212243.5U CN207945052U (en) | 2018-02-07 | 2018-02-07 | A kind of slideable powered shock absorption device for wind-driven generator rear base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820212243.5U CN207945052U (en) | 2018-02-07 | 2018-02-07 | A kind of slideable powered shock absorption device for wind-driven generator rear base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207945052U true CN207945052U (en) | 2018-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820212243.5U Active CN207945052U (en) | 2018-02-07 | 2018-02-07 | A kind of slideable powered shock absorption device for wind-driven generator rear base |
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| CN (1) | CN207945052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457813A (en) * | 2018-02-07 | 2018-08-28 | 南京风电科技有限公司 | A kind of slideable powered shock absorption device for wind-driven generator rear base |
-
2018
- 2018-02-07 CN CN201820212243.5U patent/CN207945052U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457813A (en) * | 2018-02-07 | 2018-08-28 | 南京风电科技有限公司 | A kind of slideable powered shock absorption device for wind-driven generator rear base |
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