CN116906282B - Detection device for wind power blade connecting bolt - Google Patents

Detection device for wind power blade connecting bolt Download PDF

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Publication number
CN116906282B
CN116906282B CN202311174404.8A CN202311174404A CN116906282B CN 116906282 B CN116906282 B CN 116906282B CN 202311174404 A CN202311174404 A CN 202311174404A CN 116906282 B CN116906282 B CN 116906282B
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China
Prior art keywords
driving
base
sleeve
motor
connecting block
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CN202311174404.8A
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Chinese (zh)
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CN116906282A (en
Inventor
孙锋
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Qidong Jingyao Photoelectric Technology Co ltd
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Qidong Jingyao Photoelectric Technology Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D17/00Monitoring or testing of wind motors, e.g. diagnostics
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Transmission Devices (AREA)

Abstract

The invention discloses a detection device for a wind power blade connecting bolt, which comprises a base, wherein the base and a flange plate arranged on a wind power blade keep the same arc-shaped structure, and a sliding rail with the same radian is arranged on the base; the connecting plate is arranged on the sliding block, a first motor is arranged at one end of the connecting plate to drive the sliding block to move along the sliding rail, a driving wheel is arranged on a main shaft of the first motor, and the driving wheel is meshed with a rack on the base in a transmission manner. According to the invention, the first driving sleeve is arranged on the base, the fastening nut at the lower end of the first driving sleeve is driven to be sleeved on the bolt connected with the wind power blade under the action of the second motor, fastening and detection of the connecting bolt are realized, meanwhile, when the fastening nut is sleeved on the nut, connection between the whole device and the bolt is realized, the first motor drives the base to rotate along the flange under the action of the sliding rail, the sliding block, the driving wheel and the rack, and displacement is realized under the action of the fixing devices at two ends.

Description

Detection device for wind power blade connecting bolt
Technical Field
The invention relates to the technical field of wind driven generator bolt detection equipment, in particular to a detection device for a wind power blade connecting bolt.
Background
The wind power blade is an important part in the wind turbine generator, and is connected with the engine room through a large number of high-strength bolts, so that reliable connection of the bolts is an important guarantee for normal operation of the wind turbine generator. However, in the long-term service process of the bolt, the bolt is easy to loosen due to vibration, impact, temperature change and the like, so that the reliability of the wind power blade structure is reduced, and even safety accidents occur.
Chinese patent publication No.: CN112696325B discloses an automatic detection device and method for a wind turbine generator bolt, comprising a power supply device, a rail trolley, a mounting support, a signal transmission device, a control device, a sensor device and an annular slide rail; the annular sliding rail is fixed at the inner side of a flange of the inter-stage connection of the wind turbine generator, and inner teeth are arranged at the inner side of the annular sliding rail; the sensor device collects sampling stress data of bolts and sampling image data of nuts matched with the sensor device, the control device controls the rail trolley to move along the annular sliding rail, one bolt is detected, the rail trolley moves to the next bolt, the sampling stress data and the sampling image data are received and processed, and a processing result is sent to the background server. However, the following drawbacks still exist in the actual use process: the device detection device mainly relies on the annular guide rail to realize movement, and finally detects each bolt, so that the annular guide rail is required to be installed on each blade installation flange in the actual detection process, the production cost is greatly increased, the measurement efficiency is reduced, and popularization and application are not facilitated.
Disclosure of Invention
The invention aims to provide a detection device for a wind power blade connecting bolt, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a detection device for wind-powered electricity generation blade connecting bolt includes
The base keeps the same arc structure with a flange plate installed on the wind power blade, a sliding rail with the same radian is arranged on the base, and a sliding block is arranged on the sliding rail in a sliding manner;
the connecting plate is arranged on the sliding block, one end of the connecting plate is provided with a first motor for driving the sliding block to move along the sliding rail, a driving wheel is arranged on a main shaft of the first motor, the driving wheel is in transmission engagement with a rack on the base, and the other end of the connecting plate is movably provided with a first connecting block capable of moving along the radial direction of the base;
the second connecting block is connected with the first connecting block in a lifting manner, a first fixing sleeve is arranged at the end part of the second connecting block, a first driving sleeve is arranged at one end of the first fixing sleeve in a lifting manner, the first driving sleeve is connected with the first fixing sleeve through external threads, a magnetic fastening nut is arranged at the lower end of the first driving sleeve, and a second motor for driving the first driving sleeve to rotate is arranged at the other end of the first fixing sleeve;
the third connecting blocks are arranged at two ends of the base and can move along the radial direction of the base, and the fourth connecting blocks are arranged on the third connecting blocks; the fourth connecting block is provided with a second fixing sleeve, a second driving sleeve is arranged in the second fixing sleeve in a lifting manner, and the second driving sleeve is provided with an internal thread and is connected with the second fixing sleeve through an external thread on the outer wall; and
and the third motor is arranged at one end of the second fixing sleeve and is used for driving the second driving sleeve to rotate.
Preferably, the first connecting block is movably connected with the connecting plate through a first guide rod, the first connecting block is in transmission connection with a first screw rod, one end of the first screw rod is movably connected with the connecting plate, and a first handle is arranged at the other end of the first screw rod.
Preferably, the first connecting block is provided with a second guide rod, the second connecting block is sleeved on the second guide rod so as to realize up-and-down movement, the second guide rod is sleeved with a spring, and the lower end of the spring is abutted with the upper end face of the second connecting block.
Preferably, a driving arm is arranged at one end of the second motor spindle, a first driving rod is arranged on the driving arm, and the first driving rod is connected with the top wall of the first driving sleeve and extends into the first driving sleeve.
Preferably, a torque sensor is arranged at the other end of the second motor main shaft.
Preferably, the third connecting block is slidably connected with the base through a third guide rod so as to move along the radial direction of the base, a driving seat is arranged on the base and is in transmission connection with a second screw rod, one end of the second screw rod is movably connected with a fourth connecting block, and the other end of the second screw rod is provided with a second handle.
Preferably, the third motor spindle is connected with a second driving rod with a semicircular structure, and the second driving rod is connected with the top of the second driving sleeve and extends into the second driving sleeve.
Preferably, a protruding portion is arranged on one side, in contact with the blade mounting flange, of the base so as to achieve limiting in the radial direction of the base.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the first driving sleeve is arranged on the base, the fastening nut at the lower end of the first driving sleeve is driven to be sleeved on the bolt connected with the wind power blade under the action of the second motor, so that the fastening and detection of the connecting bolt are realized, meanwhile, when the fastening nut is sleeved on the nut, the connection between the whole device and the bolt is realized, the first motor drives the base to rotate along the flange under the action of the sliding rail, the sliding block, the driving wheel and the rack, and the displacement is realized under the action of the fixing devices at the two ends, so that the automatic movement of the whole device along the flange is realized, and therefore, the production cost is reduced, the detection efficiency is improved, and the popularization and the application are facilitated.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of another angle structure of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is an enlarged schematic view of the structure of the area A in FIG. 1;
FIG. 5 is a schematic view of the structure of the connecting plate and the first connecting block according to the present invention;
FIG. 6 is a schematic view of the first stationary sleeve and the first driving sleeve according to the present invention;
FIG. 7 is a schematic view of the second stationary sleeve and the second driving sleeve according to the present invention;
in the figure: 1 base, 2 slide rails, 3 racks, 4 slide blocks, 5 connecting plates, 6 first motors, 7 driving wheels, 8 first connecting blocks, 9 first guide rods, 10 first screw rods, 11 first handles, 12 second connecting blocks, 13 second guide rods, 14 springs, 15 first fixed sleeves, 16 first driving sleeves, 17 fastening nuts, 18 second motors, 19 driving arms, 20 first driving rods, 21 moment sensors, 22 third connecting blocks, 23 third guide rods, 24 fourth connecting blocks, 25 second screw rods, 26 driving seats, 27 second handles, 28 second fixed sleeves, 29 second driving sleeves, 30 third motors, 31 second driving rods and 32 convex parts.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides a technical solution:
a detection device for wind-powered electricity generation blade connecting bolt includes
The wind power wind turbine blade comprises a base 1, wherein the base 1 and a flange plate arranged on a wind power blade keep the same arc-shaped structure, a sliding rail 2 with the same radian is integrally arranged on the base 1, a sliding block 4 is arranged on the sliding rail 2 in a sliding way, a bolt detection device is arranged on the sliding block 4, and the sliding block 4 is driven by a power device to move along the sliding rail 2 and the base 1, so that the bolt detection device can accurately correspond to nuts at all positions on the flange plate, meanwhile, the base 1 is of a cavity structure, and a battery for supplying power for the whole device is arranged in the base 1;
the connecting plate 5 is fixedly arranged on the sliding block 4, so that the connecting plate 5 and the sliding block 4 keep synchronous movement, the connecting plate 5 faces to the radial direction of the base 1, one end of the connecting plate 5 is fixedly provided with a first motor 6 for driving the sliding block 4 to move along the sliding rail 2, a driving wheel 7 is arranged on a main shaft of the first motor 6, the driving wheel 7 adopts a gear structure, and the driving wheel 7 is in transmission engagement with the rack 3 on the base 1; the first motor 6 drives the driving wheel 7 to rotate, under the action of the rack 3, the driving slide block 4 moves along the slide rail 2, and then the bolt detection device is driven to move along the base 1, so that nuts at different positions on the flange plates can be corresponding to the bolt detection device, meanwhile, when the bolt detection device is in a fixed connection state with the nuts to be detected, and the fixing devices at two ends of the base 1 are in a separation state, at the moment, the first motor 6 moves again, and then the base 1 is driven to move along the flange plates, namely, the autonomous movement of the whole device is realized, so that the situation that guide rails are arranged and installed on each flange plate in the prior art is avoided, the production cost is reduced, and the detection efficiency is improved;
the other end of the connecting plate 5 is movably provided with a first connecting block 8 capable of moving along the radial direction of the base 1, the first connecting block 8 is movably connected with the connecting plate 5 through first guide rods 9 on two sides, the first connecting block 8 is in transmission connection with a first screw rod 10, one end of the first screw rod 10 is rotatably connected with the connecting plate 5, and the other end of the first screw rod 10 is provided with a first handle 11; by rotating the first handle 11, under the action of the first screw 10, the first connecting block 8 is driven to move along the radial direction of the base 1, and the purpose of this arrangement is that: the screw thread detection device on the connecting plate 5 can carry out position adjustment (flanges with different sizes and slightly different screw hole positions on the upper part) along the radial direction of the base 1 so as to be suitable for flanges with different sizes and models, thereby improving the universality of the whole device;
the second connecting block 12, its liftable is connected with first connecting block 8 up end, is provided with second guide arm 13 on the first connecting block 8, and second connecting block 12 cup joints on second guide arm 13 to realize reciprocating, cup jointed spring 14 on the second guide arm 13, and the lower extreme of spring 14 and the up end butt of second connecting block 12, the purpose that sets up like this is: when the first driving sleeve 16 moves downwards under the action of the second motor 18, at this time, the fastening nut 17 at the lower part of the first driving sleeve 16 cannot be exactly combined and sleeved with the nut to be detected, so that the first driving sleeve 16 can be moved and adjusted by arranging the second guide rod 13 and the spring 14, and the fastening nut 17 can be smoothly sleeved on the nut to be detected; the end part of the second connecting block 12 is provided with a first fixing sleeve 15, one end of the first fixing sleeve 15 is provided with a first driving sleeve 16 in a lifting manner, the first driving sleeve 16 is connected with the first fixing sleeve 15 through external threads, the lower end of the first driving sleeve 16 is provided with a magnetic fastening nut 17, and the fastening nut 17 is magnetic, so that when the fastening nut 17 is sleeved with a nut to be detected, the whole device is fixedly combined with the nut under the action of magnetic force, and a foundation is laid for the autonomous movement of the base 1; the other end of the first fixed sleeve 15 is provided with a second motor 18 for driving the first driving sleeve 16 to rotate, one end of a main shaft of the second motor 18 is provided with a driving arm 19, two ends of the driving arm 19 are respectively provided with a first driving rod 20, the first driving rod 20 is connected with the top wall of the first driving sleeve 16 and extends to the inside of the first driving sleeve 16, and the purpose of the arrangement is that: the first driving rod 20 drives the first driving sleeve 16 to rotate, and simultaneously, the first driving sleeve 16 can also move downwards under the action of the external thread; the other end of the main shaft of the second motor 18 is provided with a torque sensor 21, the torque sensor 21 can accurately measure the torque of the nut to be measured, and when the nut to be measured does not reach a set threshold value (namely, the nut is loosened and damaged), the detection device can carry out background marking and inform detection personnel through a flashing lamp and an alarm, so that the detection personnel can further check the nut and the bolt; therefore, the detection device related to the embodiment can also be used for fastening the connecting bolt in the initial stage of wind power blade installation, and brings great convenience to the installation work;
the third connecting blocks 22 are arranged at two ends of the base 1 and can move along the radial direction of the base 1, the third connecting blocks 22 are slidably connected with the base 1 through two groups of third guide rods 23 so as to move along the radial direction of the base 1, a driving seat 26 is arranged on the base 1, the driving seat 26 is in transmission connection with a second screw rod 25, one end of the second screw rod 25 is movably connected with a fourth connecting block 24, the other end of the second screw rod 25 is provided with a second handle 27, the fourth connecting block 24 is arranged on the third connecting block 22, and the fourth connecting block 24 is driven to move along the radial direction of the base 1 under the action of the second screw rod 25 by rotating the second handle 27, so that a fixing device on the fourth connecting block 24 can perform position adjustment so as to adapt to flanges of different types; the fourth connecting block 24 is provided with a second fixed sleeve 28, a second driving sleeve 29 is arranged in the second fixed sleeve 28 in a lifting manner, the second driving sleeve 29 is provided with internal threads and is connected with the second fixed sleeve 28 through external threads on the outer wall, and the second driving sleeve 29 is matched with a bolt of a nut to be detected; and
the third motor 30, it sets up in the fixed cover 28 one end of second, be used for driving the rotation of second drive cover 29, be connected with the second actuating lever 31 of semicircle structure on the third motor 30 main shaft, second actuating lever 31 is connected with second drive cover 29 top, and extend to its inside, third motor 30 drive second actuating lever 31 rotates, linkage second drive cover 29 rotates, under the effect of external screw thread, second drive cover 29 downstream, and then cup joint on the bolt of waiting to detect the nut, and realize the threaded connection with the bolt under the effect of internal screw thread, the advantage of setting like this lies in: the whole detection device can be fixedly connected with the bolt to be detected, accidents such as falling and sliding do not occur, and meanwhile, the first driving sleeve 16 can be ensured to smoothly detect the nut;
in order to enable an accurate connection of the whole device with the flange and to facilitate an "autonomous" movement of the whole device, the base 1 is provided with a projection 32 on the side in contact with the blade mounting flange, in order to achieve a limit in the radial direction of the base 1.
Working principle: the staff installs the whole dress on the ring flange, the bellying 32 on the base 1 just fits with the edge of ring flange, adjust first handle 11 and the second handle 27 at both ends, make first drive sleeve 16 and the second drive sleeve 29 at both ends, just correspond with waiting to detect nut, the bolt, then third motor 30 drives second drive sleeve 29 and rotates, make second drive sleeve 29 threaded connection to waiting to be measured the bolt, realize fixing the whole device on the ring flange, then, second motor 18 drives first drive sleeve 16 motion, make the fastening nut 17 of first drive sleeve 16 lower part overlap to waiting to detect the nut, report to the police and record, then, first motor 6 drives slider 4 accurate removal, in order to realize detecting the nut of each position between the second drive sleeve 29, when first drive sleeve 16 cup joints to last nut, second drive sleeve 29 and bolt at both ends are in the separation state, first motor 6 is under the effect of drive wheel 7 and rack 3 this moment, drive base 1 moves along the ring flange (slider 4 keeps still), and then, get into the detection area that is repeated to the realization is detected again on the ring flange.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A detection device for wind-powered electricity generation blade connecting bolt, its characterized in that: comprising
The wind power blade comprises a base (1), wherein the base and a flange plate arranged on a wind power blade keep the same arc-shaped structure, a sliding rail (2) with the same radian is arranged on the base (1), and a sliding block (4) is arranged on the sliding rail (2) in a sliding manner;
the connecting plate (5) is arranged on the sliding block (4), a first motor (6) is arranged at one end of the connecting plate (5) to drive the sliding block (4) to move along the sliding rail (2), a driving wheel (7) is arranged on a main shaft of the first motor (6), the driving wheel (7) is in transmission engagement with the rack (3) on the base (1), and a first connecting block (8) capable of moving along the radial direction of the base (1) is movably arranged at the other end of the connecting plate (5);
the second connecting block (12) is connected with the first connecting block (8) in a lifting manner, a first fixing sleeve (15) is arranged at the end part of the second connecting block (12), a first driving sleeve (16) is arranged at one end of the first fixing sleeve (15) in a lifting manner, the first driving sleeve (16) is connected with the first fixing sleeve (15) through external threads, a magnetic fastening nut (17) is arranged at the lower end of the first driving sleeve (16), a second motor (18) for driving the first driving sleeve (16) to rotate is arranged at the other end of the first fixing sleeve (15), a driving arm (19) is arranged at one end of a main shaft of the second motor (18), a first driving rod (20) is arranged on the driving arm (19), the first driving rod (20) is connected with the top wall of the first driving sleeve (16) and extends into the first driving sleeve (16), and a moment sensor (21) is arranged at the other end of a main shaft of the second motor (18).
The third connecting blocks (22) are arranged at two ends of the base (1) and can move along the radial direction of the base (1), and the fourth connecting blocks (24) are arranged on the third connecting blocks (22); a second fixing sleeve (28) is arranged on the fourth connecting block (24), a second driving sleeve (29) is arranged in the second fixing sleeve (28) in a lifting manner, and the second driving sleeve (29) is provided with internal threads and is connected with the second fixing sleeve (28) through external threads on the outer wall; and
and a third motor (30) arranged at one end of the second fixed sleeve (28) and used for driving the second driving sleeve (29) to rotate.
2. The detection device for a wind power blade connecting bolt according to claim 1, wherein: the connecting device is characterized in that the first connecting block (8) is movably connected with the connecting plate (5) through a first guide rod (9), the first connecting block (8) is in transmission connection with the first screw rod (10), one end of the first screw rod (10) is movably connected with the connecting plate (5), and a first handle (11) is arranged at the other end of the first screw rod.
3. The detection device for a wind power blade connecting bolt according to claim 2, wherein: be provided with second guide arm (13) on first connecting block (8), second connecting block (12) cup joints on second guide arm (13) to realize reciprocating, spring (14) have been cup jointed on second guide arm (13), and the lower extreme of spring (14) and the up end butt of second connecting block (12).
4. The detection device for a wind power blade connecting bolt according to claim 1, wherein: the third connecting block (22) is in sliding connection with the base (1) through a third guide rod (23) so as to realize moving along the radial direction of the base (1), a driving seat (26) is arranged on the base (1), the driving seat (26) is in transmission connection with a second screw rod (25), one end of the second screw rod (25) is in movable connection with a fourth connecting block (24), and a second handle (27) is arranged at the other end of the second screw rod (25).
5. The detection device for a wind power blade connecting bolt according to claim 4, wherein: and a second driving rod (31) with a semicircular structure is connected to the main shaft of the third motor (30), and the second driving rod (31) is connected with the top of the second driving sleeve (29) and extends into the second driving sleeve.
6. The detection device for a wind power blade connecting bolt according to any one of claims 1 to 5, wherein: a protruding portion (32) is arranged on one side, in contact with the blade mounting flange, of the base (1) so as to achieve limiting in the radial direction of the base (1).
CN202311174404.8A 2023-09-13 2023-09-13 Detection device for wind power blade connecting bolt Active CN116906282B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311174404.8A CN116906282B (en) 2023-09-13 2023-09-13 Detection device for wind power blade connecting bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311174404.8A CN116906282B (en) 2023-09-13 2023-09-13 Detection device for wind power blade connecting bolt

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CN116906282A CN116906282A (en) 2023-10-20
CN116906282B true CN116906282B (en) 2023-11-28

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696325A (en) * 2020-12-31 2021-04-23 上海电气集团股份有限公司 Automatic detection equipment and method for wind turbine generator bolt
CN112761901A (en) * 2021-01-29 2021-05-07 楚延飞 Blade nut detection device for wind power generation overhaul
CN112986395A (en) * 2021-02-04 2021-06-18 张韩飞 Aluminum alloy slab ingot ultrasonic detection device
CN215370119U (en) * 2021-03-23 2021-12-31 明阳智慧能源集团股份公司 Aerogenerator tower section of thick bamboo bolt monitoring devices
CN216518414U (en) * 2022-01-12 2022-05-13 华能国际电力股份有限公司河南清洁能源分公司 Monitoring equipment for GE wind generating set tower bolt
CN217950592U (en) * 2022-06-28 2022-12-02 西安热工研究院有限公司 Wind power tower cylinder bolt detection device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696325A (en) * 2020-12-31 2021-04-23 上海电气集团股份有限公司 Automatic detection equipment and method for wind turbine generator bolt
CN112761901A (en) * 2021-01-29 2021-05-07 楚延飞 Blade nut detection device for wind power generation overhaul
CN112986395A (en) * 2021-02-04 2021-06-18 张韩飞 Aluminum alloy slab ingot ultrasonic detection device
CN215370119U (en) * 2021-03-23 2021-12-31 明阳智慧能源集团股份公司 Aerogenerator tower section of thick bamboo bolt monitoring devices
CN216518414U (en) * 2022-01-12 2022-05-13 华能国际电力股份有限公司河南清洁能源分公司 Monitoring equipment for GE wind generating set tower bolt
CN217950592U (en) * 2022-06-28 2022-12-02 西安热工研究院有限公司 Wind power tower cylinder bolt detection device

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