CN110834302A - Tool and method for magnetically drilling blade and breaking bolt - Google Patents
Tool and method for magnetically drilling blade and breaking bolt Download PDFInfo
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- CN110834302A CN110834302A CN201910826982.2A CN201910826982A CN110834302A CN 110834302 A CN110834302 A CN 110834302A CN 201910826982 A CN201910826982 A CN 201910826982A CN 110834302 A CN110834302 A CN 110834302A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand 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
- B25B27/18—Hand 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 withdrawing broken threaded parts or twist drills
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Abstract
The invention relates to a tool and a method for taking a blade broken bolt by a magnetic drill, wherein an electric magnetic drill in the tool is adsorbed on a magnetic drill support through magnetic force, the magnetic drill support is fixedly connected to a variable-pitch bearing bolt and extends to a position near the broken bolt, the magnetic drill support is in contact connection with a blade main body or the variable-pitch bearing main body through a support leveling bolt, the support leveling bolt is used for supporting and leveling the magnetic drill support, and a drill bit on the electric magnetic drill is aligned to the connection position of the broken bolt and a concentric nut and is coaxial. The method can be used for offshore and onshore wind turbines, firstly, a magnetic drill base is installed according to the fracture position of a blade bolt, an electric magnetic drill is adsorbed on the magnetic drill base, then, an auger bit or a hollow bit is installed on the electric magnetic drill, the position of the electric magnetic drill is adjusted, and finally, the electric magnetic drill is started to cut and separate the rusted and seized part of the broken bolt. The invention can reduce the requirement of taking out the broken wires of the blades and the like on each site, and effectively solves the problems of failure, breakage, corrosion and seizure of the root parts of the bolts of the blades of the fan to take out the broken wires smoothly.
Description
Technical Field
The invention relates to a blade transportation and maintenance tool of a wind driven generator, in particular to a blade connecting bolt fracture taking-out tool.
Background
At present, during the regular maintenance process of the blade on an operation and maintenance site, the blade connecting bolt is taken out in a failure and breakage mode, which is an inevitable operation. What the on-the-spot adopted all is blade producer supplier's instrument frock, and this frock security is poor to hard wasting time, also there are more limitations simultaneously:
(1) the problem of on-site broken wire positioning; (2) the field wastes time and labor, and the blade body is easy to be damaged, so that field malfunction is caused; (3) the tool is very likely to hurt people when multiple items of work are carried out simultaneously due to the fact that the manual aircraft is difficult to drill and extend the long steel cannon and is difficult to position unstably; (4) when the on-site blade is taken out due to broken wires, the safe and efficient treatment on the failed rusty seized bolt is inevitably needed.
Chinese patent publication No. CN204277947U discloses an apparatus for taking out bolts in fan blades, including the magnetic drill, with install at its epaxial drilling rod of transmission, and the drill bit that is connected with the drilling rod, the magnetic drill sets up on adsorption platform, adsorption platform passes through the bolt fastening at the blade, make the cracked bolt in the blade deep hole just can be taken out under the condition that need not carry out high temperature heating, the blade that has made the bolt absolutely need not return the factory to maintain, save high blade maintenance cost for the user, the availability of fan has been improved, economic benefits is considerable, the shortcoming that the cracked bolt that has scribbled the locking glue can't be taken out has been solved.
However, adsorption platform fixes on the blade, because do not connect the screw on the blade, need make the screw hole at the blade, the bulk strength of blade has been destroyed, and the blade is not the plane, be connected the back between adsorption platform and the blade, do not have adsorption platform leveling mechanism, can't guarantee that the drill bit on the magnetic drill on the adsorption platform is coaxial with cracked bolt, it is difficult to punch with one heart and beat the easy broken bolt of taking out of devising easily, in addition, it is big difficult to drill with the 23mm drill bit, and burn the drill bit easily, it destroys the blade body to beat the silk tooth easily, thereby be difficult to install new bolt.
Therefore, an electric magnetic drill tool needs to be designed to overcome the defects of a manual aircraft drill tool of a supplier and the problems in the prior art, solve the risk of damage caused by unstable positioning of a handheld aircraft drill possibly existing in the supplier and solve the problem that a drill bit on a magnetic seat drill is coaxial with a broken bolt, improve the use work efficiency of field tools, and solve the problems that on-site blade taking and bolt breaking are difficult, on-site downtime is long, customers complain about a plurality of problems, and the like.
Disclosure of Invention
The invention provides a tool and a method for magnetically drilling and taking out a blade broken bolt, which are used for reducing the requirement of taking out the broken wires of blades and the like on each site, effectively solving the problems of failure, breakage, corrosion and seizure of the root of a fan blade bolt, smoothly taking out the blade without picking the blade, and are safe, reliable, efficient, economical and applicable.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a magnetic drill gets disconnected bolt frock of blade, includes electronic magnetic drill, drill bit, electronic magnetic drill passes through magnetic force and adsorbs on the magnetic drill support, magnetic drill support fixed connection becomes the bolt of oar bearing to extend to near disconnected bolt position, be equipped with support leveling bolt on the both sides of magnetic drill support, support leveling bolt and blade main part or become oar bearing main part contact and be connected, support leveling bolt supports leveling magnetic drill support, makes the drill bit on the electronic magnetic drill aims at the junction of disconnected bolt and concentric nut to guarantee that the drill bit is coaxial with disconnected bolt.
Further, the magnetic drill base is composed of a supporting plate and a bottom plate and is
Or "Contraband" shaped plate-like structure.
Further, when the split bolt is used for the offshore wind turbine, the split bolt is coaxially connected with the concentric nut; the drill bit on the electric magnetic drill is a twist drill bit.
Further, the electric magnetic drill is provided with an extension bar to lock the twist drill.
Further, when the split bolt is used for the land fan, the split bolt and the concentric nut are connected in a T shape, and the concentric nut is a cylindrical nut; the drill bit on the electric magnetic drill is a hollow drill bit.
Further, the diameter of the cylindrical nut is larger than that of the hollow drill bit, the outer diameter of the hollow drill bit is larger than that of the T-shaped broken bolt, an inscribed circle is formed between the hollow drill bit and the cylindrical nut during drilling, and the tangent point is right above the T-shaped broken bolt connection position.
A method for taking a blade broken bolt by a magnetic drill for an offshore wind turbine comprises the steps of firstly installing a magnetic drill base according to the broken position of a blade bolt, adsorbing an electric magnetic drill on the magnetic drill base, installing an extension bar on the electric magnetic drill to lock a twist drill bit, adjusting the coaxial position of the twist drill bit on the electric magnetic drill and the broken bolt through a support leveling bolt, then starting the electric magnetic drill to drive the extension bar and the twist drill bit to position and concentrically punch on the broken bolt, simultaneously loosening a thread locking agent at the connection position of the broken bolt, and finally smoothly taking out the broken bolt by a reverse thread extractor.
A method for drilling a blade broken bolt by using a magnetic force for a land fan comprises the steps of firstly installing a magnetic drill base according to the broken position of a blade bolt, adsorbing an electric magnetic drill on the magnetic drill base, then installing a hollow drill on the electric magnetic drill, adjusting the coaxial position of the hollow drill on the electric magnetic drill and the broken bolt through a support leveling bolt, and finally starting the electric magnetic drill to cut and separate a concentric nut and the broken bolt, so that the broken bolt and the concentric nut can be smoothly taken out.
Further, when adsorbing electronic magnetic drill on the magnetic drill base, break away from for preventing electronic magnetic drill: the position of the electric magnetic drill is well adjusted and a line is drawn on the fixed magnetic drill base, and the electric magnetic drill is firmly adsorbed on the magnetic drill base by electrifying.
Further, after the electric magnetic drill is started to cut off the bolt, the positions of the twist drill bit or the hollow drill bit, the broken bolt and the concentric nut are finely adjusted by the electric magnetic drill, and the broken bolt and the concentric nut are separated and cut.
The invention has the beneficial effects that:
(1) safety, the magnetic drill is a mature product;
(2) the magnetic drill adsorption tool (magnetic drill support) is fixed by using the connecting bolt of the blade and the hub;
(3) the speed of the magnetic drill hollow drill bit is adjusted, the speed of cutting and separating rusted and seized bolt parts is high, and the speed is generally 2-3 hours (an airplane drill generally needs 2-3 days);
(4) economic, high processing speed (reducing the loss of generated energy) and no need of large hoisting cost for picking the blades.
Drawings
FIG. 1 is a schematic structural view of a tool for magnetically drilling a blade and breaking a bolt for an offshore wind turbine according to the present invention;
FIG. 2 is a schematic structural view of a tool for breaking bolts of blades of a magnetic drill for a land fan, which is disclosed by the invention;
FIG. 3 is a schematic view of the relationship between a hollow hole and a T-shaped broken bolt.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in figure 1, the magnetic drill blade breaking bolt taking tool for the offshore wind turbine comprises an electric magnetic drill 1, a twist drill 2-1, a magnetic drill support 3, a support leveling bolt 4 and the like. The magnetic drill support 3 is fixedly connected to a bolt of the variable pitch bearing 6 and extends to the position near the broken bolt 7-1 and the concentric nut on the blade body 5, the electric magnetic drill 1 is adsorbed on the magnetic drill support 2 through electrified magnetic force, and the twist drill 2-1 on the electric magnetic drill 1 is aligned with the joint of the broken bolt 7-1 and the concentric nut. The broken bolt 7-1 is coaxially connected with the concentric nut. The electric magnetic drill 1 is connected with the twist drill 2-1 through the extension bar 8.
The magnetic drill base 3 is composed of a supporting plate 3-1 and a bottom plate 3-2 and is in an Contraband-shaped plate structure. The bottom plate 3-2 is fixed on a bolt of a variable pitch bearing 6, support leveling bolts 4 are arranged at two ends of the support plate 3-1, the support leveling bolts 4 are in contact connection with the variable pitch bearing 6, and the leveling support plate 3-1 is supported through the support leveling bolts 4, so that the twist drill bit 2-1 on the electric magnetic drill 1 is coaxial with the broken bolt 7-1, and the falling of the magnetic drill base 3 is effectively prevented.
When the device is used, firstly, a magnetic drill base 3 is installed according to the fracture position of a blade bolt, an electric magnetic drill 1 is adsorbed on the magnetic drill base 3, an extension rod 8 is installed on the electric magnetic drill to lock a twist drill 2-1, the position of the twist drill 2-1 on the electric magnetic drill 1, which is coaxial with a broken bolt 7-1, is adjusted through a support leveling bolt, then, the electric magnetic drill 1 is started to drive the extension rod 8 and the twist drill 2-1 to position and concentrically punch holes on the broken bolt 7-1, a thread locking agent at the joint of the broken bolt 7-1 is simultaneously loosened, and finally, a reverse thread extractor is used for smoothly extracting the broken bolt 7-1.
As shown in figure 2, the magnetic drill blade breaking bolt taking tool for the land fan comprises an electric magnetic drill 1, a hollow drill bit 2-2, a magnetic drill support 3, a support leveling bolt 4 and the like. The magnetic drill support 3 is fixedly connected to a bolt of the variable pitch bearing 6 and extends to the position near a broken bolt and a concentric nut of the blade body 5, the electric magnetic drill 1 is adsorbed on the magnetic drill support 2 through electrified magnetic force, the hollow drill bit 2-2 on the electric magnetic drill 1 is aligned to the joint of the concentric nut and the broken bolt, the concentric nut is a cylindrical nut, and the cylindrical nut and the broken bolt are connected to form a T-shaped broken bolt 7-2.
As shown in FIG. 3, the diameter D of the cylindrical nut is 50mm larger than the diameter of the core bit 2-2Diameter of hollow drill bit 2-2
Larger than the T-shaped break bolt M30. When drilling, an inscribed circle is formed between the hollow drill bit 2-2 and the cylindrical nut, and the tangent point S is right above the T-shaped broken bolt connection part.
The magnetic drill base 3 is composed of a supporting plate 3-1 and a bottom plate 3-2 and is in the shape of
A plate-shaped structure. The bottom plate 3-2 is fixed on a bolt of a variable pitch bearing 6, support leveling bolts 4 are arranged at two ends of the support plate 3-1, and the support leveling bolts 4 are in contact with the blade body 5And in connection, the leveling support plate 3-1 is supported by the support leveling bolt 4, so that the hollow drill bit 2-2 on the electric magnetic drill 1 is coaxial with the T-shaped broken bolt 7-2, and the falling off of the magnetic drill base 3 is effectively prevented.
When the tool is used, firstly, the magnetic drill base 3 is installed according to the fracture position of the blade bolt, the electric magnetic drill 1 is adsorbed on the magnetic drill base 3, then the hollow drill 2-2 is installed on the electric magnetic drill 1, the coaxial position of the hollow drill 2-2 and the broken bolt 7-2 on the electric magnetic drill 1 is adjusted through the support leveling bolt 4, and finally, the electric magnetic drill 1 is started to cut and separate the concentric nut and the broken bolt of the T-shaped broken bolt 7-2, so that the broken bolt and the concentric nut can be taken out smoothly.
Considering the safety problem during the design of disconnected bolt frock of blade is got in magnetic force drilling, some safeguard measure have been done with reference to electronic aircraft drilling tool frock:
(1) the electric magnetic drill is prevented from falling: and adjusting the position of the magnetic drill on a fixed magnetic drill base, marking a line, and electrifying to firmly adsorb the magnetic drill on the magnetic drill support.
(2) Electric cutting brake function: the electric magnetic drill has certain braking capacity, and the drill bit (twist drill and hollow drill) matched with the electric magnetic drill is further adjusted to be separated and cut from a broken bolt and a concentric nut.
Compared with the prior art, one group of the tool uses a supplier tool, and the other group of the tool has the following results:
from the comparison of the results, it can be seen that: the magnetic drill tool is similar to a supplier tool in all aspects, but has high efficiency, short downtime and high customer satisfaction, and can be popularized in all fields. The magnetic drill tool provided by the invention is applied to other field application scenes while taking the broken blade wires.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a disconnected bolt frock of blade is got in magnetic force brill, includes electronic magnetic drill, drill bit, its characterized in that: the electric magnetic drill is adsorbed on a magnetic drill support through magnetic force, the magnetic drill support is fixedly connected to a bolt of a variable-pitch bearing and extends to a position near a broken bolt, support leveling bolts are arranged at two ends of the magnetic drill support and are in contact connection with a blade main body or a variable-pitch bearing main body, the support leveling bolts are used for supporting and leveling the magnetic drill support, a drill bit on the electric magnetic drill is aligned to the joint of the broken bolt and a concentric nut, and the drill bit and the broken bolt are coaxial.
2. The magnetic drilling blade bolt breaking tool according to claim 1, characterized in that: the magnetic drill base is composed of a supporting plate and a bottom plate and is
Or "Contraband" shaped plate-like structure.
3. The magnetic drilling blade bolt breaking tool according to claim 1, characterized in that: when the split bolt is used for an offshore wind turbine, the split bolt is coaxially connected with the concentric nut; the drill bit on the electric magnetic drill is a twist drill bit.
4. The magnetic drilling blade bolt breaking tool according to claim 3, characterized in that: the electric magnetic drill is provided with the twist drill bit locked by the extension bar.
5. The magnetic drilling blade bolt breaking tool according to claim 1, characterized in that: when the split bolt is used for the onshore fan, the split bolt is in T-shaped connection with a concentric nut, and the concentric nut is a cylindrical nut; the drill bit on the electric magnetic drill is a hollow drill bit.
6. The magnetic drilling blade bolt breaking tool according to claim 5, characterized in that: the diameter of the cylindrical nut is larger than that of the hollow drill bit, the outer diameter of the hollow drill bit is larger than that of the T-shaped broken bolt, an inscribed circle is formed between the hollow drill bit and the cylindrical nut during drilling, and the tangent point is right above the T-shaped broken bolt connection position.
7. A method for drilling a blade broken bolt by magnetic force for an offshore wind turbine adopts the tool for drilling the blade broken bolt by magnetic force of claim 4, and is characterized in that: firstly, a magnetic drill base is installed according to the fracture position of a blade bolt, an electric magnetic drill is adsorbed on the magnetic drill base, an extension bar is installed on the electric magnetic drill to lock a twist drill bit, the position of the twist drill bit on the electric magnetic drill, which is coaxial with the broken bolt, is adjusted through a support leveling bolt, then the electric magnetic drill is started to drive the extension bar and the twist drill bit to position and concentrically punch on the broken bolt, a thread locking agent at the joint of the broken bolt is simultaneously loosened, and finally, the broken bolt is smoothly taken out through a reverse thread extractor.
8. A method for drilling a blade broken bolt by magnetic force for a land wind turbine adopts the tool for drilling the blade broken bolt by magnetic force as claimed in claim 6, and is characterized in that: firstly, a magnetic drill support is installed according to the fracture position of a blade bolt, an electric magnetic drill is adsorbed on a magnetic drill base, a hollow drill bit is installed on the electric magnetic drill, the coaxial position of the hollow drill bit on the electric magnetic drill and a broken bolt is adjusted through a support leveling bolt, and finally, the electric magnetic drill is started to cut and separate the concentric nut and the broken bolt, so that the broken bolt and the concentric nut can be taken out smoothly.
9. The method for magnetically drilling a blade broken bolt according to claim 7 or 8, wherein: when adsorbing electronic magnetic drill on the magnetic drill base, break away from for preventing electronic magnetic drill: the position of the electric magnetic drill is well adjusted and a line is drawn on the fixed magnetic drill base, and the electric magnetic drill is firmly adsorbed on the magnetic drill support after being electrified.
10. The method for magnetically drilling a blade broken bolt according to claim 7 or 8, wherein: after the electric magnetic drill is started to cut off the bolt, the positions of the twist drill bit or the hollow drill bit, the broken bolt and the concentric nut are finely adjusted by the electric magnetic drill, and the broken bolt and the concentric nut are separated and cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826982.2A CN110834302A (en) | 2019-09-03 | 2019-09-03 | Tool and method for magnetically drilling blade and breaking bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826982.2A CN110834302A (en) | 2019-09-03 | 2019-09-03 | Tool and method for magnetically drilling blade and breaking bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110834302A true CN110834302A (en) | 2020-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910826982.2A Pending CN110834302A (en) | 2019-09-03 | 2019-09-03 | Tool and method for magnetically drilling blade and breaking bolt |
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| CN (1) | CN110834302A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393551A (en) * | 2022-03-09 | 2022-04-26 | 宝武集团马钢轨交材料科技有限公司 | Online extracting tool for broken bolts of wheel rolling mill radial plate roller |
-
2019
- 2019-09-03 CN CN201910826982.2A patent/CN110834302A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393551A (en) * | 2022-03-09 | 2022-04-26 | 宝武集团马钢轨交材料科技有限公司 | Online extracting tool for broken bolts of wheel rolling mill radial plate roller |
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