CN104552133A - Taking-out method for embedded positioning screw bolt at root part of wind power blade - Google Patents

Taking-out method for embedded positioning screw bolt at root part of wind power blade Download PDF

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Publication number
CN104552133A
CN104552133A CN201410799347.7A CN201410799347A CN104552133A CN 104552133 A CN104552133 A CN 104552133A CN 201410799347 A CN201410799347 A CN 201410799347A CN 104552133 A CN104552133 A CN 104552133A
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CN
China
Prior art keywords
bolt
blade
root
internal diameter
positioning sleeve
Prior art date
Application number
CN201410799347.7A
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Chinese (zh)
Other versions
CN104552133B (en
Inventor
乔光辉
徐希亮
田丰
Original Assignee
连云港中复连众复合材料集团有限公司
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Application filed by 连云港中复连众复合材料集团有限公司 filed Critical 连云港中复连众复合材料集团有限公司
Priority to CN201410799347.7A priority Critical patent/CN104552133B/en
Publication of CN104552133A publication Critical patent/CN104552133A/en
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Publication of CN104552133B publication Critical patent/CN104552133B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same

Abstract

The invention discloses a taking-out method for an embedded positioning screw bolt at the root part of a wind power blade. The method comprises the steps of cutting a positioning screw bolt, taking down a mold flange, cutting the positioning screw bolt, installing a root connecting plate, installing a drill bit and a magnetic seat drill, drilling a hole, removing residue screw threads, tapping screw threads and installing blade screw bolts. The taking-out method for the embedded positioning screw bolt at the root part of the wind power blade provided by the invention has the advantages that the process design is reasonable, the work efficiency is high, the intensity of the root of the blade can be ensured, a blade screw bolt sleeve cannot be cut, the root intensity of the blade cannot be damaged, and the embedded positioning screw bolt can be taken down. According to the method, the requirement of taking out the embedded positioning screw bolt of all blades manufactured by adopting the screw bolt embedding process can be met, the application range is wide, and important application values are realized.

Description

The removing method of the pre-buried bolt of a kind of wind turbine blade root

Technical field

The present invention relates to a kind of preparation method of wind turbine blade root, be specifically related to a kind of removing method of wind turbine blade root pre-embedded bolt.

Background technology

At present, domestic fan blade generally adopts root to adopt perforating type to install root of blade connecting bolt, this kind of method for root of fan blade bearing load less and bolt to install application quantitative fan blade more successful, but along with the increase of Wind turbines power, length and the root size thereof of fan blade supporting are with it also increasing, its weight also increases a lot thereupon, this just causes root of fan blade connecting bolt will bear larger load, also just higher to its performance requirement, larger for satisfactory its difficulty of root bolt of exploitation, Lianyungang Zhongfu Lianzhong Composite Material Group Co., Ltd have developed one and passes through pultrusion molding process of glass fiber reinforced plastic, manufacture pultrusion bolt sleeve built-in fitting, as Chinese application number be 201410172748.X use pultrusion bolt sleeve built-in fitting arrangement root of blade and blade shell overall perfusion shaping, make the method for root of blade pre-embedded bolt cover, the method industrialization degree is high, production efficiency is high, its product made has steady quality, size is accurately high, the advantages such as intensity is large, can well meet root of blade load large.

Root pre-embedded bolt mode, is embedded in root of blade blade bolt cover and bolt, after the blade demoulding, is taken off by bolt, be directly connected in bolt sleeve by blade bolt, can save the step of cutting and boring in the process of laying.But this kind of mode has a kind of shortcoming: bolt sleeve immerses resin sometimes, bolt and blade bolt cover is caused to bond together, bolt cannot take out, thus cause blade to use, conventional mode is taken out at the cutting of this blade bolt cover, then reorientate and install new blade bolt cover, but this kind of mode of operation damages the one of root of blade, cause intensity to reduce, affect the firmness of fan blade.

Therefore, on the basis of existing technology necessary, research and development are a kind of without cut-off blade bolt sleeve, conveniently can overlap with blade bolt the method that bonding bolt takes out, thus the intensity of guarantee root of blade.

Summary of the invention

Goal of the invention: the object of the invention is to provide a kind of simple to operate, convenient to solve the deficiencies in the prior art, root of blade intensity can be ensured, without cut-off blade bolt sleeve, can not root of blade be destroyed, the method just pre-buried bolt can taken out.The removing method of wind turbine blade root pre-embedded bolt provided by the invention can meet all employing pre-embedded bolt manufacture technics, needs the blade taken out by pre-buried bolt, has wide range of applications.

Technical scheme: in order to realize object of the present invention, the technical solution used in the present invention is:

A removing method for the pre-buried bolt of wind turbine blade root, comprises the following steps:

A, cutting bolt: first the bolt head of bolt is cut away, then mould flange is laid down, and silicagel pad is taken out, then the part of bolt being stretched out vane end faces cuts away;

B, to distribute according to the bolt circle of wind turbine blade root, make one piece of root connecting plate, described root connecting plate offers installing hole and locating hole, is provided with wear-resisting positioning sleeve in described locating hole, the counterbore on the right side of described positioning sleeve and blade bolt overlap coordinates locates; And described positioning sleeve is two kinds, that to be internal diameter overlap internal diameter with blade bolt to one is identical, and another is that internal diameter is identical with the path that blade bolt overlaps internal thread;

C, then by installing hole by root connecting plate location and installation on root of blade, and make locating hole aim at bolt, then internal diameter and blade bolt being overlapped the identical positioning sleeve of internal diameter is installed in the locating hole on root connecting plate, then be installed in positioning sleeve by overlapping the identical drill bit of internal diameter with blade bolt, then the Electromagnetic push-button of magnetic drill press is pressed, magnetic drill press is drawn onto on root connecting plate, and starts to bore bolt;

D, when soon getting into the screw position of blade bolt cover, the positioning sleeve that internal diameter and blade bolt overlap internal diameter identical is taken off, change internal diameter and overlap the identical positioning sleeve of internal thread path with blade bolt, and change the drill bit of respective diameters size, continue to bore bolt, when overlap after the bolt bondd bored completely with blade bolt, the thread remained in bolt sleeve screw thread cleans out by use drill steel, re-use screw mandrel tapping, finally in bolt sleeve screw thread, install blade bolt again.

Preferably, the removing method of the pre-buried bolt of above-described wind turbine blade root, the locating hole on described root connecting plate is 6 to 12.

Preferably, the removing method of the pre-buried bolt of above-described wind turbine blade root, the external diameter of positioning sleeve is identical with the external diameter that blade bolt overlaps.

Preferably, the removing method of the pre-buried bolt of above-described wind turbine blade root, described wear-resisting positioning sleeve is made up of 65Mn Steel material.

Preferably, the removing method of the pre-buried bolt of above-described wind turbine blade root, the same radian of inwall of root connecting plate and wind turbine blade root.

The removing method of the pre-buried bolt of above-described wind turbine blade root because bolt is very long, so period can change the drill bit of the long magnetic drill press of length gradually.

Beneficial effect: compared to the prior art the removing method of the pre-buried bolt of a kind of wind turbine blade root provided by the invention has the following advantages:

Invent the root of fan blade pre-embedded bolt sleeve forming method provided, simple to operate, convenient, operating efficiency is high, can ensure root of blade intensity, without cut-off blade bolt sleeve, can not destroy root of blade intensity, just pre-buried bolt can be taken out.The removing method of wind turbine blade root pre-embedded bolt provided by the invention can meet all employing pre-embedded bolt manufacture technics, needs the blade taken out by pre-buried bolt, has wide range of applications, have important using value.

Accompanying drawing explanation

Fig. 1 is structural representation when pre-embedded bolt of the present invention overlaps and unit bolt connects.

Fig. 2 is the process schematic of root connecting plate of the present invention.

Fig. 3 is the structural representation of positioning sleeve of the present invention.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.

As shown in Figure 1 to Figure 3: the removing method of the pre-buried bolt of a kind of wind turbine blade root, it comprises the following steps:

A, cutting bolt: first the bolt head of bolt (1) is cut away, then mould flange (2) is laid down, and silicagel pad (3) is taken out, then the part of bolt (1) being stretched out vane end faces cuts away;

B, to distribute according to the bolt circle of wind turbine blade root, make one piece of root connecting plate (4), described root connecting plate (4) offers installing hole (4-1) and locating hole (4-2), be provided with wear-resisting positioning sleeve (4-3) in described locating hole (4-2), described positioning sleeve (4-3) coordinates with the counterbore on blade bolt cover (5) right side locates; And described positioning sleeve (4-3) is two kinds, one is that internal diameter is identical with blade bolt cover (5) internal diameter, and another is that internal diameter is identical with the path of blade bolt cover (5) internal thread;

C, then by installing hole (4-1) by root connecting plate (4) location and installation on root of blade, and make locating hole (4-2) aim at bolt (1), then positioning sleeve (4-3) identical with blade bolt cover (5) internal diameter for internal diameter is installed in the locating hole (4-2) on root connecting plate (4), then the drill bit (6) identical with blade bolt cover (5) internal diameter is installed in positioning sleeve (4-3), then the Electromagnetic push-button of magnetic drill press is pressed, magnetic drill press is drawn onto on root connecting plate (4), and start to bore bolt (1),

D, when soon getting into the screw position of blade bolt cover (5), positioning sleeve (4-3) identical with blade bolt cover (5) internal diameter for internal diameter is taken off, change the positioning sleeve (4-3) that internal diameter is identical with blade bolt cover (5) internal thread path, and change the drill bit (6) of respective diameters size, continue to bore bolt (1), after the bolt (1) bondd with blade bolt cover (5) has been bored completely, drill steel is used to be cleaned out by the thread remained in bolt sleeve screw thread (5), re-use screw mandrel tapping, finally in bolt sleeve screw thread (5), install blade bolt again.

The removing method of the pre-buried bolt of above-described wind turbine blade root, is characterized in that, the locating hole (4-2) on described root connecting plate (4) is 6 to 12.

The removing method of the pre-buried bolt of above-described wind turbine blade root, the external diameter of positioning sleeve (4-3) is identical with the external diameter of blade bolt cover (5).

The removing method of the pre-buried bolt of above-described wind turbine blade root, described wear-resisting positioning sleeve (4-3) is made up of 65Mn Steel material, and intensity is high.

The removing method of the pre-buried bolt of above-described wind turbine blade root, the same radian of inwall of root connecting plate (4) and wind turbine blade root.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (5)

1. a removing method for the pre-buried bolt of wind turbine blade root, is characterized in that, comprise the following steps:
A, cutting bolt: first the bolt head of bolt (1) is cut away, then mould flange (2) is laid down, and silicagel pad (3) is taken out, then the part of bolt (1) being stretched out vane end faces cuts away;
B, to distribute according to the bolt circle of wind turbine blade root, make one piece of root connecting plate (4), described root connecting plate (4) offers installing hole (4-1) and locating hole (4-2), be provided with wear-resisting positioning sleeve (4-3) in described locating hole (4-2), described positioning sleeve (4-3) coordinates with the counterbore on blade bolt cover (5) right side locates; And described positioning sleeve (4-3) is two kinds, one is that internal diameter is identical with blade bolt cover (5) internal diameter, and another is that internal diameter is identical with the path of blade bolt cover (5) internal thread;
C, then by installing hole (4-1) by root connecting plate (4) location and installation on root of blade, and make locating hole (4-2) aim at bolt (1), then positioning sleeve (4-3) identical with blade bolt cover (5) internal diameter for internal diameter is installed in the locating hole (4-2) on root connecting plate (4), then the drill bit (6) identical with blade bolt cover (5) internal diameter is installed in positioning sleeve (4-3), then the Electromagnetic push-button of magnetic drill press is pressed, magnetic drill press is drawn onto on root connecting plate (4), and start to bore bolt (1),
D, when soon getting into the screw position of blade bolt cover (5), positioning sleeve (4-3) identical with blade bolt cover (5) internal diameter for internal diameter is taken off, change the positioning sleeve (4-3) that internal diameter is identical with blade bolt cover (5) internal thread path, and change the drill bit (6) of respective diameters size, continue to bore bolt (1), after the bolt (1) bondd with blade bolt cover (5) has been bored completely, drill steel is used to be cleaned out by the thread remained in bolt sleeve screw thread (5), re-use screw mandrel tapping, finally in bolt sleeve screw thread (5), install blade bolt again.
2. the removing method of the pre-buried bolt of wind turbine blade root according to claim 1, is characterized in that, the locating hole (4-2) on described root connecting plate (4) is 6 to 12.
3. the removing method of the pre-buried bolt of wind turbine blade root according to claim 1, is characterized in that, the external diameter of positioning sleeve (4-3) is identical with the external diameter of blade bolt cover (5).
4. the removing method of the pre-buried bolt of the wind turbine blade root according to any one of claims 1 to 3, is characterized in that, described wear-resisting positioning sleeve (4-3) is made up of 65Mn Steel material.
5. the removing method of the pre-buried bolt of wind turbine blade root according to claim 4, is characterized in that, the same radian of inwall of root connecting plate (4) and wind turbine blade root.
CN201410799347.7A 2014-12-19 2014-12-19 Taking-out method for embedded positioning screw bolt at root part of wind power blade CN104552133B (en)

Priority Applications (1)

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CN201410799347.7A CN104552133B (en) 2014-12-19 2014-12-19 Taking-out method for embedded positioning screw bolt at root part of wind power blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410799347.7A CN104552133B (en) 2014-12-19 2014-12-19 Taking-out method for embedded positioning screw bolt at root part of wind power blade

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CN104552133B CN104552133B (en) 2017-02-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438192A (en) * 2015-08-07 2017-02-22 中材科技风电叶片股份有限公司 Sectional type wind power generation blade connecting structure and method

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EP1918051A1 (en) * 2006-11-03 2008-05-07 Rheinmetall Landsysteme GmbH Device for creating a drillhole in a workpiece and utilisation of the device for renewing defective tapping
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JP2013221289A (en) * 2012-04-16 2013-10-28 Hankyu Hanshin Railway Technologies Kk Method for taking out residual broken bolt
CN103753498A (en) * 2014-01-27 2014-04-30 莱芜钢铁集团有限公司 Drill bit positioning tool

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Publication number Priority date Publication date Assignee Title
US2391405A (en) * 1942-10-28 1945-12-25 Winona Tool Mfg Company Method of removing broken studs
JPH08243944A (en) * 1995-03-08 1996-09-24 Ishikawajima Harima Heavy Ind Co Ltd Removing method for stud bolt
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EP1918051A1 (en) * 2006-11-03 2008-05-07 Rheinmetall Landsysteme GmbH Device for creating a drillhole in a workpiece and utilisation of the device for renewing defective tapping
CN201597018U (en) * 2010-02-01 2010-10-06 粟文洪 Ballastless track broken bolt pulling device
JP2013221289A (en) * 2012-04-16 2013-10-28 Hankyu Hanshin Railway Technologies Kk Method for taking out residual broken bolt
CN103753498A (en) * 2014-01-27 2014-04-30 莱芜钢铁集团有限公司 Drill bit positioning tool

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438192A (en) * 2015-08-07 2017-02-22 中材科技风电叶片股份有限公司 Sectional type wind power generation blade connecting structure and method

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