CN107764449A - Wind electricity blade blade root pre-embedded bolt covers drawing force testing device and method - Google Patents
Wind electricity blade blade root pre-embedded bolt covers drawing force testing device and method Download PDFInfo
- Publication number
- CN107764449A CN107764449A CN201610698407.5A CN201610698407A CN107764449A CN 107764449 A CN107764449 A CN 107764449A CN 201610698407 A CN201610698407 A CN 201610698407A CN 107764449 A CN107764449 A CN 107764449A
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- Prior art keywords
- blade root
- drawing force
- hollow
- blade
- pull bar
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention proposes a kind of wind electricity blade blade root pre-embedded bolt set drawing force testing device and method, the test device includes backing plate, pull bar, hollow jack or hollow actuator and drawing force measuring device, what backing plate can fit in the blade root test specimen one is provided with the end face of bolt sleeve, and the backing plate is provided with the through hole for being used for exposing the bolt sleeve；Pull bar one end is threadedly coupled through the through hole and with the bolt sleeve；Hollow jack or hollow actuator are sheathed on the pull bar, and the hollow jack or hollow actuator are resisted against the backing plate and drive the pull bar to apply pulling capacity to the bolt sleeve；Drawing force measuring device is used for the size for measuring the pulling capacity.The test device of the present invention is simple in construction, in light weight, small volume, can be applicable with wild environment indoors, and can be used for different types of blade root test specimen, has larger use range.
Description
Technical field
The present invention relates to a kind of wind electricity blade blade root pre-embedded bolt to cover drawing force testing device, and the invention further relates to wind-powered electricity generation leaf
Piece blade root pre-embedded bolt covers drawing force test method.
Background technology
Wind electricity blade is attached by blade root T-bolt or blade root pre-embedded bolt set with generator proper wheel hub, and blade root connects
The intensity size of fitting is the important mechanical index of large-scale wind generating blade.It is currently used for measuring the pre-buried spiral shell of wind electricity blade blade root
The detection means general structure of the pulling capacity of bolt set is complicated, and mobile inconvenience, use is dumb, is merely capable of to small-sized blade root examination
Bolt sleeve on part carries out pulling capacity and detected, it is impossible to and whole blade is tested, and on-the-spot test can not be used for,
It can be used only in laboratory and tested.
Above- mentioned information is only used for strengthening the understanding of the background to the present invention, therefore it disclosed in the background section
It can include not forming the information to prior art known to persons of ordinary skill in the art.
The content of the invention
It is an object of the present invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of simple in construction, use range
Big wind electricity blade blade root pre-embedded bolt set drawing force testing device.
Another object of the present invention is to provide a kind of wind electricity blade blade root pre-embedded bolt set drawing force test method.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will be from description
It is apparent from, or can be by the practice of the present invention and acquistion.
According to an aspect of the present invention, a kind of wind electricity blade blade root pre-embedded bolt set drawing force testing device, for surveying
Try the pre-buried bolt sleeve of the blade root test specimen of wind electricity blade, including backing plate, pull bar, hollow jack or hollow actuator and drawing
Pull out force measurement apparatus, what backing plate can fit in the blade root test specimen one is provided with the end face of bolt sleeve, and on the backing plate
Provided with the through hole for exposing the bolt sleeve；Pull bar one end is threadedly coupled through the through hole and with the bolt sleeve；
Hollow jack or hollow actuator are sheathed on the pull bar, and the hollow jack or hollow actuator are resisted against the backing plate
And the pull bar is driven to apply pulling capacity to the bolt sleeve；Drawing force measuring device is used for the size for measuring the pulling capacity.
According to an embodiment of the present invention, the pull bar is studs, and one end of the studs is described in
Through hole is simultaneously threadedly coupled with the bolt sleeve, and the other end is provided with the nut coordinated with the hollow jack or hollow actuator
And baffle plate.
According to an embodiment of the present invention, the drawing force measuring device include be used for detect the hollow jack or
The pressure gauge of the oil pressure of hollow actuator.
According to an embodiment of the present invention, the drawing force measuring device includes the foil gauge for being connected to the bolt sleeve
Device.
According to an embodiment of the present invention, the pulling capacity that the hollow jack provides is 0~150 ton, described hollow
The pulling capacity that actuator provides is 0~100 ton.
According to an embodiment of the present invention, the backing plate is provided with is used for and bolt sleeve phase positioned at the both sides of through hole
The connecting hole of connection.
According to an embodiment of the present invention, in addition to the data storage measured by a storage drawing force measuring device
Device.
According to another aspect of the present invention, a kind of wind electricity blade blade root pre-embedded bolt set drawing force test method, is used for
Test the pulling capacity of the pre-buried bolt sleeve of blade root test specimen of wind electricity blade, it is characterised in that comprise the following steps：
One backing plate is provided, and backing plate is fitted in the one of the blade root test specimen and is provided with the end face of bolt sleeve, the pad
Plate is provided with the through hole for being used for exposing the bolt sleeve；
One pull bar is provided, and make the pull bar one end pass through the through hole after be threadedly coupled with the bolt sleeve；
Hollow jack or hollow actuator are sheathed on the pull bar, and make the hollow jack or hollow actuator
It is resisted against the backing plate and provides pulling capacity to the pull bar；
The pulling capacity applied by the drawing force measuring device measurement hollow jack or hollow actuator to pull bar
Size.
According to an embodiment of the present invention, the blade root test specimen is from whole branch blade, half branch blade, the simulation of porous townhouse
One of which in blade root testpieces or single head testpieces.
According to an embodiment of the present invention, the hollow jack or hollow actuator by pull bar to the bolt sleeve
Apply the continually changing pulling capacity of size.
As shown from the above technical solution, the advantages and positive effects of the present invention are：
The wind electricity blade blade root pre-embedded bolt set drawing force testing device of the present invention is simple in construction, the number of components used
It is few, in light weight, small volume, it is only necessary to people can easily shift position, thus be used not only for covered court, also fit
For field place, further, since hollow jack or the active force of hollow actuator are applied on pull bar and backing plate, it is not necessary to
The external world provides the structural support, it is thus possible to suitable for a variety of different blade root test specimens, significantly expands use range.It is specific and
Speech, it is applied to blade root test specimen large-scale to whole branch blade and half branch blade etc. in the field environment and tested, is also applied for
The different types of microphyll such as blade root testpieces and single head testpieces is simulated to unidirectional porous townhouse under laboratory environment indoors
Root test specimen is tested.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the invention will become
It is more obvious.
Fig. 1 is that the wind electricity blade blade root pre-embedded bolt set drawing force testing device of an embodiment of the present invention tries for blade root
Schematic diagram during part；
Fig. 2 is the explosive view of the wind electricity blade blade root pre-embedded bolt set drawing force testing device in Fig. 1；
Fig. 3 is the structural representation of the pull bar in another embodiment of the present invention；
In figure：1st, backing plate；11st, through hole；12nd, connecting hole；13rd, bolt；2nd, pull bar；21st, nut；22nd, baffle plate；23rd, even
Connect end；3rd, hollow jack；4th, blade root test specimen；5th, bolt sleeve.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
Embodiment one
Referring to Fig. 1 and Fig. 2, present embodiment discloses a kind of wind electricity blade blade root pre-embedded bolt set pulling capacity test dress
Put, it is used to test bolt sleeve 5 pre-buried on the blade root test specimen 4 of wind electricity blade.Wind electricity blade blade root pre-embedded bolt set is drawn
Pull out force test device includes a backing plate 1, a pull bar 2, a hollow jack 3 and a drawing force measuring device.
Backing plate 1 can be a steel plate, and the backing plate 1 can fit in an end face for being provided with bolt sleeve 5 of blade root test specimen 4
On.The through hole 11 for being used for exposing the bolt sleeve 5 is provided with backing plate 1.When backing plate 1 is fitted on the end face of blade root test specimen 4
When, due to the presence of through hole 11 so that bolt sleeve 5 will not be blocked by backing plate 1, it is thus possible to which bolt sleeve 5 is tested.
It can also be set on backing plate 1 positioned at the both sides of through hole 11 for the connecting hole 12 that is connected with bolt sleeve 5.
One end of pull bar 2 is threadedly coupled after passing through the through hole 11 with bolt sleeve 5, and the pull bar 2 is attached with bolt sleeve 5
Afterwards, pulling capacity can be applied to bolt sleeve 5 by pull bar 2, thus tests the size of the draft of bolt sleeve 5.At this
In embodiment, the pull bar 2 is studs, and one end of the studs through through hole 11 and is screwed into bolt sleeve 5, with
The bolt sleeve 5 is threadedly coupled.It should be pointed out that the structure of the pull bar 2 is not limited to studs, as described in Figure 3, in this hair
In bright another embodiment, the pull bar 2 is a stock, and its one end has external screw thread, and the other end has the company of a boss-shaped
Connect end 23.
Hollow jack 3 is sheathed on the pull bar 2, that is to say, that the pull bar 2 is from the hollow axle center of hollow jack 3
Pass through.Also, the hollow jack 3 can be resisted against on backing plate 1.When hollow jack 3 works, it can be to pull bar 2
Apply the driving force away from bolt sleeve 5, so as to drive pull bar 2 to apply pulling capacity to bolt sleeve 5.
The hollow jack 3 can also be substituted by a hollow actuator, and the hollow actuator is equally sheathed on pull bar 2, and
It can be resisted against on backing plate 1, when hollow actuator works, it can apply the driving force away from bolt sleeve 5 to pull bar 2, from
And pull bar 2 is driven to apply pulling capacity to bolt sleeve 5.The pulling capacity that the hollow jack provides is 0~150 ton, described hollow
The pulling capacity that actuator provides is 0~100 ton, the pulling capacity of the hollow jack can 0~60 ton, 60~120 tons, 120~
Adjusted between 150 tons, the pulling capacity of the hollow actuator can adjust between 0~60 ton and 60~100 tons.
When pull bar 2 is studs, the other end of the studs is provided with matches somebody with somebody with hollow jack or hollow actuator
The nut 21 and baffle plate 22 of conjunction, and when pull bar 2 is the stock shown in Fig. 3, the hollow jack or hollow actuator can
Directly interacted with connection end 23, so as to transmit driving force to pull bar 2.
Drawing force measuring device is used to measuring the hollow jack 3 or hollow actuator is exerted by drawing on bolt sleeve 5
The size of pull out force.In the present embodiment, the drawing force measuring device includes being used to detect hollow jack or hollow actuator
Oil pressure pressure gauge.The oil pressure size of the hollow jack or hollow actuator can be measured by the pressure gauge, and with this
Characterize the size of pulling capacity.It will be apparent to a skilled person that the concrete structure of the drawing force measuring device and unlimited
System, such as the drawing force measuring device can also include being connected to the strain gauge device of bolt sleeve 5, be measured by the foil gauge
The size of pulling capacity suffered by bolt sleeve 5.
In addition, the wind electricity blade blade root pre-embedded bolt set drawing force testing device of the present invention can also be deposited including a data
Storage device, for storing the data measured by drawing force measuring device, the data storage device can be computer, single-chip microcomputer, PLC
Deng the function such as its data offer that can be provided to drawing force measuring device stores, analysis, printing, display.
When in use, first, backing plate 1 is bonded for the wind electricity blade blade root pre-embedded bolt set drawing force testing device of the present invention
It is provided with the one of blade root test specimen 4 on the end face of bolt sleeve 5.And the through hole 11 on backing plate 1 is set to be directed at bolt sleeve to be tested
5, the connecting hole 12 of backing plate 1 can be attached using bolt 13 with the bolt sleeve 5 do not tested, by backing plate 1 and blade root test specimen 4
It is fixed together.Then, hollow jack or hollow actuator are placed on backing plate 1, it is hollow very heavy through this using pull bar 2
Top or hollow actuator.When hollow jack or hollow actuator work, pulling capacity is measured using drawing force measuring device
Size.Hollow jack or hollow actuator can also both be driven and be pressurizeed with manual pressure by electro-motor.When hollow
After the pulling capacity that jack or hollow actuator provide reaches preset maximum value, it can be determined that whether bolt sleeve can bear this most
Big value pulling capacity, so as to judge whether bolt sleeve meets requirement.
The wind electricity blade blade root pre-embedded bolt set drawing force testing device of the present invention is simple in construction, the number of components used
Few, in light weight, small volume, the overall weight of backing plate, hollow jack or actuator only has tens kilograms, can easily store
In chest, it is only necessary to people can easily shift position, thus be used not only for covered court, be also applied for field
Place, further, since hollow jack or the active force of hollow actuator are applied on pull bar and backing plate, it is not necessary to which the external world provides
Supporting construction, it is thus possible to suitable for a variety of different blade root test specimens, significantly expand use range.Specifically, it is suitable
Test, be also applied for real indoors for blade root test specimen large-scale to whole branch blade and half branch blade etc. in the field environment
Test under room environmental to enter the unidirectional porous townhouse simulation different types of small-sized blade root test specimen such as blade root testpieces and single head testpieces
Row test.
The continually changing pulling capacity of size, research can also be provided to bolt sleeve using hollow jack and hollow actuator
Influence of the bolt sleeve under the change pulling capacity.Especially when using hollow actuator, it can apply to bolt sleeve tens million of
Secondary continually changing pulling capacity, dynamic tired pull strength is carried out to bolt sleeve and is tested.The frequency 1~10 of the hollow actuator
1~50 millimeter of secondary/second, amplitude.
Embodiment two
Present embodiment discloses a kind of wind electricity blade blade root pre-embedded bolt set drawing force test method, for testing wind-powered electricity generation
The pulling capacity of the pre-buried bolt sleeve of the blade root test specimen of blade, comprises the following steps：
One backing plate is provided, and backing plate is fitted in the one of the blade root test specimen and is provided with the end face of bolt sleeve, the pad
Plate is provided with the through hole for being used for exposing the bolt sleeve；
One pull bar is provided, and make the pull bar one end pass through the through hole after be threadedly coupled with the bolt sleeve；
Hollow jack or hollow actuator are sheathed on the pull bar, and make the hollow jack or hollow actuator
Contact is against the backing plate and provides pulling capacity to the pull bar；
The size of the pulling capacity is measured by drawing force measuring device.
The wind electricity blade blade root pre-embedded bolt set drawing force test method of present embodiment, the letter of required device structure
Single, the number of components used is few, in light weight, small volume, it is only necessary to people can easily shift position, thus can not only
For covered court, field place is also applied for, further, since hollow jack or the active force of hollow actuator are applied to drawing
On bar and backing plate, it is not necessary to which the external world provides the structural support, it is thus possible to suitable for a variety of different blade root test specimens, significantly expands
Use range.In test, the blade root test specimen can select whole branch blade, half branch blade, the simulation blade root experiment of porous townhouse
One of which in part or single head testpieces.The hollow jack or hollow actuator can also be by pull bars to the bolt
Set applies the continually changing pulling capacity of size, and dynamic tired pull strength test is done to blade root test specimen.
The illustrative embodiments of the present invention are particularly shown and described above.It should be understood that the invention is not restricted to institute
Disclosed embodiment, on the contrary, it is intended to cover comprising various modifications in the spirit and scope of the appended claims
And equivalent arrangements.
Claims (10)
1. a kind of wind electricity blade blade root pre-embedded bolt covers drawing force testing device, the blade root test specimen institute for testing wind electricity blade is pre-
The bolt sleeve buried, it is characterised in that including：
Backing plate, what it can fit in the blade root test specimen one is provided with the end face of bolt sleeve, and the backing plate is provided with and used
In the through hole of the exposure bolt sleeve；
Pull bar, its one end are threadedly coupled through the through hole and with the bolt sleeve；
Hollow jack or hollow actuator, are sheathed on the pull bar, and the hollow jack or hollow actuator are resisted against institute
State backing plate and drive the pull bar to apply pulling capacity to the bolt sleeve；And
Drawing force measuring device, measure the size of the pulling capacity.
2. wind electricity blade blade root pre-embedded bolt according to claim 1 covers drawing force testing device, it is characterised in that described
Pull bar is studs, and one end of the studs is threadedly coupled through the through hole and with the bolt sleeve, the other end
Provided with the nut and baffle plate with the hollow jack or the cooperation of hollow actuator.
3. wind electricity blade blade root pre-embedded bolt according to claim 1 covers drawing force testing device, it is characterised in that described
Drawing force measuring device includes being used for the pressure gauge for detecting the hollow jack or the oil pressure of hollow actuator.
4. wind electricity blade blade root pre-embedded bolt according to claim 1 covers drawing force testing device, it is characterised in that described
Drawing force measuring device includes the strain gauge device for being connected to the bolt sleeve.
5. wind electricity blade blade root pre-embedded bolt according to claim 1 covers drawing force testing device, it is characterised in that described
The pulling capacity that hollow jack provides is 0~150 ton, and the pulling capacity that the hollow actuator provides is 0~100 ton.
6. wind electricity blade blade root pre-embedded bolt according to claim 1 covers drawing force testing device, it is characterised in that described
Backing plate is provided with positioned at the both sides of through hole for the connecting hole that is connected with bolt sleeve.
7. wind electricity blade blade root pre-embedded bolt according to claim 1 covers drawing force testing device, it is characterised in that also wraps
Include the data storage device measured by the storage drawing force measuring device.
8. a kind of wind electricity blade blade root pre-embedded bolt covers drawing force test method, the blade root test specimen institute for testing wind electricity blade is pre-
The pulling capacity of the bolt sleeve buried, it is characterised in that comprise the following steps：
One backing plate is provided, and backing plate is fitted in the one of the blade root test specimen and is provided with the end face of bolt sleeve, on the backing plate
Provided with the through hole for exposing the bolt sleeve；
One pull bar is provided, and make the pull bar one end pass through the through hole after be threadedly coupled with the bolt sleeve；
Hollow jack or hollow actuator are sheathed on the pull bar, and make the hollow jack or hollow actuator against
Pulling capacity is provided in the backing plate and to the pull bar；
The size of the pulling capacity applied by the drawing force measuring device measurement hollow jack or hollow actuator to pull bar.
9. wind electricity blade blade root pre-embedded bolt according to claim 8 covers drawing force test method, it is characterised in that described
Blade root test specimen is from the one of which in whole branch blade, half branch blade, porous townhouse simulation blade root testpieces or single head testpieces.
10. wind electricity blade blade root pre-embedded bolt according to claim 8 covers drawing force test method, it is characterised in that institute
State hollow jack or hollow actuator and the continually changing pulling capacity of size is applied to the bolt sleeve by pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698407.5A CN107764449A (en) | 2016-08-19 | 2016-08-19 | Wind electricity blade blade root pre-embedded bolt covers drawing force testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698407.5A CN107764449A (en) | 2016-08-19 | 2016-08-19 | Wind electricity blade blade root pre-embedded bolt covers drawing force testing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107764449A true CN107764449A (en) | 2018-03-06 |
Family
ID=61262268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610698407.5A Withdrawn CN107764449A (en) | 2016-08-19 | 2016-08-19 | Wind electricity blade blade root pre-embedded bolt covers drawing force testing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107764449A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520838A (en) * | 2018-12-25 | 2019-03-26 | 西南交通大学 | A kind of shield tunnel screwed joint tensile property experimental rig |
| CN109520839A (en) * | 2018-12-25 | 2019-03-26 | 西南交通大学 | A kind of shield tunnel screwed joint tensile property multifunction test device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634604A (en) * | 2009-09-07 | 2010-01-27 | 中国人民解放军国防科学技术大学 | Static strength test method of large vane used for wind power and electrical power and test system thereof |
| CN201555798U (en) * | 2009-10-26 | 2010-08-18 | 中航惠腾风电设备股份有限公司 | Tester for testing adhesive static strength of wind turbine blade butt embedded part and glass fiber reinforced plastic |
| CN201945447U (en) * | 2010-12-27 | 2011-08-24 | 中航惠腾风电设备股份有限公司 | Large scale wind wheel blade static test of the multi point load side pull test device |
| CN203705153U (en) * | 2013-12-12 | 2014-07-09 | 天津市盛佳怡电子有限公司 | An intensity test apparatus for a wind power blade |
| CN204514597U (en) * | 2015-04-15 | 2015-07-29 | 中国科学院工程热物理研究所 | A kind of wind power blade bolt pull-out test device |
| JPWO2017007034A1 (en) * | 2015-07-03 | 2017-07-06 | 東 洋一郎 | Cross-cut test apparatus and cross-cut method |
-
2016
- 2016-08-19 CN CN201610698407.5A patent/CN107764449A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634604A (en) * | 2009-09-07 | 2010-01-27 | 中国人民解放军国防科学技术大学 | Static strength test method of large vane used for wind power and electrical power and test system thereof |
| CN201555798U (en) * | 2009-10-26 | 2010-08-18 | 中航惠腾风电设备股份有限公司 | Tester for testing adhesive static strength of wind turbine blade butt embedded part and glass fiber reinforced plastic |
| CN201945447U (en) * | 2010-12-27 | 2011-08-24 | 中航惠腾风电设备股份有限公司 | Large scale wind wheel blade static test of the multi point load side pull test device |
| CN203705153U (en) * | 2013-12-12 | 2014-07-09 | 天津市盛佳怡电子有限公司 | An intensity test apparatus for a wind power blade |
| CN204514597U (en) * | 2015-04-15 | 2015-07-29 | 中国科学院工程热物理研究所 | A kind of wind power blade bolt pull-out test device |
| JPWO2017007034A1 (en) * | 2015-07-03 | 2017-07-06 | 東 洋一郎 | Cross-cut test apparatus and cross-cut method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520838A (en) * | 2018-12-25 | 2019-03-26 | 西南交通大学 | A kind of shield tunnel screwed joint tensile property experimental rig |
| CN109520839A (en) * | 2018-12-25 | 2019-03-26 | 西南交通大学 | A kind of shield tunnel screwed joint tensile property multifunction test device |
| CN109520839B (en) * | 2018-12-25 | 2023-12-15 | 西南交通大学 | Multifunctional test method for tensile property of shield tunnel bolt joint |
| CN109520838B (en) * | 2018-12-25 | 2023-12-15 | 西南交通大学 | Tensile property test device for shield tunnel bolt joint |
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Application publication date: 20180306 |