CN115353024B - Intelligent lifting bracket for operation of blades of wind turbine generator - Google Patents
Intelligent lifting bracket for operation of blades of wind turbine generator Download PDFInfo
- Publication number
- CN115353024B CN115353024B CN202211276462.7A CN202211276462A CN115353024B CN 115353024 B CN115353024 B CN 115353024B CN 202211276462 A CN202211276462 A CN 202211276462A CN 115353024 B CN115353024 B CN 115353024B
- Authority
- CN
- China
- Prior art keywords
- lifter
- supporting
- cradle
- blade
- hanging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses an intelligent lifting bracket for operation of a wind turbine blade, belonging to the technical field of wind power generation equipment. The cradle is U-shaped, is suspended between the first and second lifters, and can move around the suspension shaft. The cradle is internally provided with a plurality of groups of hanging belts and profile supporting pieces, the hanging belts freely hang in a U shape, and both ends of the hanging belts are provided with hanging belt rolling shafts and buffer devices; the profile supporting piece is connected with the cradle body through the adjusting screw rod, the three-dimensional posture of the supporting surface can be adjusted, and the supporting surface is provided with the soft base plate. The first lifter and the second lifter are in non-rigid connection through the connecting support and are synchronously controlled by the PLC system. The folding supports on the two sides of the elevator play a role in integral stabilization. The bracket can support the position to adapt to the posture and the shape of the blade, relieve impact and reduce extrusion, effectively ensure the product quality, avoid turning over in the midway of processing, eliminate potential safety hazards, improve the production efficiency, reduce the labor intensity and reduce the occupied area of a travelling crane.
Description
Technical Field
The invention belongs to the technical field of wind power generation equipment, and particularly relates to an intelligent lifting bracket for operation of a blade of a wind turbine generator.
Background
The wind power blade is a core component for converting natural wind energy into electric energy of the wind generating set in the wind generating set, and is also a main basis for measuring the design and technical level of the wind generating set.
In the course of working at the wind turbine generator system blade, need support, hold up, go up and down and even operation such as upset to the blade, corresponding process needs rely on the bracket to go on, in order to guarantee the product percent of pass, guarantees in the course of working that the contact of bracket and wind turbine blade tip is gentle steady, avoids the blade striking or wearing and tearing to appear and leads to the final quality of product unqualified, therefore reliable and stable bracket structure is essential important production equipment.
With the accelerated upgrade of wind turbine generators to large megawatts, the appearance of the fan blades gradually changes to large scale, the length of the blades of the offshore wind turbine generators exceeds 115 meters, and the weight of each blade also exceeds 50 tons. The wind turbine generator blade is made of a light composite material, the shell is mainly made of glass fiber or carbon fiber reinforced resin, resin finish paint is sprayed on the surface of the shell, and the wind turbine generator blade has the characteristics of thin and long and irregular appearance, insufficient integral rigidity, poor surface bearing performance, heavy body weight and the like.
Based on the characteristic of fan blade itself, in order to hold up the blade more steadily reliably, avoid blade breakage in the course of working, when alleviating the lift with in the course of working the blade rock the impact or the striking harm that brings, generally require that the bracket wholly has good shock attenuation anticollision performance. In order to avoid damaging the surface of the blade during lifting, the lifting support surface of the bracket is preferably fitted with the surface structure of the blade as much as possible, the support body is preferably made of a flexible structure, the corresponding support surface is preferably made of a soft material, and the support point is required to have a sufficient stress area, so that the local pressure stress of the bracket structure on the surface of the blade can be reduced to the maximum extent. The blade can be better turned over as little as possible during the processing period of the blade so as to improve the operation efficiency, reduce the labor intensity, reduce the occupation of traveling vehicles in a workshop and avoid the damage to the blade in the turning process, thereby requiring the blade to be in a state of convenient operation on a bracket and even carrying out necessary posture adjustment on the blade on the premise of not increasing the risk according to the requirement.
In view of the above operational requirements, the art has placed higher demands on the design and use of wind turbine blade operation brackets. The traditional operation bracket basically adopts a bracket with a U-shaped structure to lift the blade, but lacks effective protective measures and necessary functions, and is difficult to meet the processing requirements of large-scale wind power blades. The wind power blade tip operation bracket disclosed in Chinese patent CN 201667581.4 is improved to a certain extent aiming at the problems of the traditional bracket, and mainly comprises a supporting part and a moving part, wherein the supporting part comprises a bottom plate and a pair of U-shaped plates, U-shaped grooves are formed on the U-shaped plates, a pair of upper rolling shafts and a pair of lower rolling shafts are pivoted between the two U-shaped plates, a sling is loosely connected between the two lower rolling shafts, passes through the upper parts of the two upper rolling shafts and droops between the two upper rolling shafts, the design of the sling can improve the adaptability of the blade tip part of the wind power blade, and the height of the blade tip part can be correspondingly adjusted; be connected with two protection shields between two U templates, be equipped with the blotter on the protection shield, the protection shield can make the suspender of bearing blade strike on it the time impact force reduce rocking, also can reduce when protecting the suspender because of rocking the risk that the striking leads to fan blade to drop, improves the safety in utilization.
However, when the above scheme is implemented, there are still several disadvantages in maintaining the stability of the blade and the convenience of adjusting the operation posture: 1) The degree of freedom of the hanging strips and the protective plates is low, and the setting positions and the setting angles are difficult to adjust, so that the hanging strips and the protective plates are difficult to adjust in time to be in fit with the surfaces of the blades according to the shapes of the blades, the surfaces of the blades cannot be protected from being damaged by pressure to the maximum extent, and the supporting surfaces are difficult to uniformly bear the force, so that the risk of damage to the surfaces of the blades in the processing process is high, and the processing requirements of fan blades with different sizes can not be met; 2) The designed hanging strip does not have a buffer device, and the self weight of the large fan blade is larger, so that the hanging strip has larger fracture risk when in use; 3) In this scheme, the rigidity of protection shield, it mainly plays the buffering striking, avoid the effect of suspender striking wearing and tearing, so it is not the structure that is arranged in the course of working bearing fan blade, play the effect of bearing fan blade, therefore in the device, the simple relies on the suspender to accomplish blade bearing work, because the suspender is flexible material, itself possesses certain pendulous nature, so can make the blade have the condition that the unstability rocked at the in-process of lifting, fan blade risk of dropping is great, the potential safety hazard is obvious.
Therefore, in order to solve the problems of blade stability, posture adjustment and the like during lifting, a bracket structure needs to be further improved in design, the flexibility and the degree of freedom during accessory operation and the attaching stability of the surface of the fan blade are mainly improved, the balance and the stability of the blade are kept to the maximum extent, and the surface of the blade is effectively protected from being crushed in the machining process.
Disclosure of Invention
The invention aims to solve the defects in the prior art, discloses an intelligent lifting bracket for operation of a wind turbine blade, can effectively solve the problems of blade stability, posture adjustment and the like during lifting, and can effectively protect the surface of the blade from being damaged.
The technical scheme of the invention is as follows: an intelligent lifting bracket for operation of a wind turbine blade comprises a cradle, a first lifter and a second lifter, wherein the cradle is suspended between the first lifter and the second lifter; the cradle comprises a cradle body, hanging strips and a profile supporting component, wherein a plurality of groups of hanging strips and profile supporting components are arranged on the inner side of the cradle body; two ends of the hanging strip are respectively sleeved on a fixed rod with a buffer device in a penetrating way, and the strip body of the hanging strip bypasses a hanging strip rolling shaft positioned at the top of the cradle body and then falls in the center of the cradle body; each group of profile supporting assembly comprises two profile supporting pieces which are symmetrically arranged, each profile supporting piece comprises a supporting plate, four adjusting screws and four mounting supports, the supporting plate is rotatably connected with one end of each adjusting screw, and the other end of each adjusting screw is mounted on the cradle body through the mounting supports; the side is equipped with a set of foldable supporting mechanism respectively around first lift and second lift, foldable supporting mechanism's one end is connected in the frame, the other end extends to the outside portion of keeping away from the cradle body, every foldable supporting mechanism of group includes the folding beam, flexible roof beam and supporting leg, flexible cover is worn in the activity of flexible roof beam is inside and can stretch out and draw back along the axial of folding beam, the supporting leg is established at the outside end of flexible roof beam, but be equipped with the perpendicular flexible spike in supporting leg inside.
Furthermore, the hanging strips hang freely in a U-shaped manner, and a plurality of groups of hanging strips and profile supporting components are arranged on the cradle body at intervals in the front-back direction.
Further, connect two dead levers at the both ends of same suspender and on the cradle body symmetric distribution, buffer includes two buffer beam and two dish spring groups, is equipped with a buffer beam and a dish spring group respectively at the dead lever both ends, and the buffer beam top is connected with the dead lever, the bottom is spacing with the nut after passing the frame plate on the cradle body, and it has dish spring group just to be located the ring cover between frame plate and the nut on the buffer beam, just is located the frame plate top and is connected with spacing clamp splice on the buffer beam.
Furthermore, two ends of the sling roller shaft are respectively connected to a sling cam on one corresponding side, and the bottom end of the sling cam is hinged to the top of the cradle body.
Furtherly, the cradle body is U-shaped steel system frame construction, is equipped with a soft connecting block that is used for hanging the connection lift on the lateral surface at both ends about the cradle body respectively, and soft connecting block is established in the middle part position of cradle body side, is equipped with on the lateral surface of soft connecting block and hangs the shaft hole.
Furthermore, the support plate is made of steel material, and a soft backing plate is arranged on the support surface of the support plate contacting with the blade.
Furthermore, a first lifter and a second lifter are symmetrically distributed on two sides of the cradle, the first lifter and the second lifter are the same type of lifter, and the lifter comprises a rack, a lifting screw rod, a driving motor, a lifting trolley, a suspension shaft and a base; the cradle comprises a cradle body, a cradle nut, a lifting trolley, a hanging shaft, a lifting screw rod, a driving motor, a shaft hole, a hanging shaft and a hanging shaft, wherein the cradle body is arranged on the upper portion of a base, the lifting screw rod is arranged on the inner side of the cradle body and driven to rotate by the driving motor at the top of the cradle body, the lifting trolley is connected to the lifting screw rod through a screw rod nut, the inner side surface of the lifting trolley is provided with the shaft hole, the hanging shaft is sleeved in the shaft hole, and the cradle body is hung on the hanging shaft on one corresponding side.
Furthermore, the folding support mechanisms arranged on two sides of the same elevator are symmetrically arranged.
Furthermore, the bottoms of the first lifter and the second lifter are connected through a connecting support, the connecting support comprises two bottom beams, two box seats and two rectangular pipes, the two bottom beams are horizontally and symmetrically arranged, the box seats are correspondingly arranged on the outer side surfaces of the two bottom beams respectively, and the shape of an opening cavity at the top of each box seat is matched with the shape of a beam frame at the bottom of the cradle body; a pair of rectangular tubes is symmetrically arranged above the bottom beam.
Furthermore, the inner side surfaces of two ends of the bottom beam are respectively provided with a U-shaped clamping groove, the bases of the first lifter and the second lifter are provided with a fixed pin shaft, and two ends of the fixed pin shaft are connected in the U-shaped clamping grooves on the corresponding sides in a clamping mode.
The invention has the beneficial effects that:
1. the cradle is connected by adopting flexible joints, so that the cradle has enough freedom degree in a specific direction, the cradle can better adapt to the bottom surface characteristics of the blade in the vertical direction in the lifting process, certain self-alignment capability is realized in the horizontal direction, the lifting state formed by a plurality of supporting points can automatically meet or quickly adapt to the posture and the surface form of the blade through real-time adjustment, the blade is well supported, and the blades are supported by the supporting points in a balanced manner, so that the impact can be relieved, the supporting posture can be quickly adjusted, the balance and the stability of the blade can be kept, and the condition of overlarge local pressure can be avoided, and the blade can be effectively prevented from being damaged (impact, vibration and crush);
2. the hanging strips directly lifting the blades are made of flexible materials, the buffer devices at the two ends can effectively relieve the impact generated between the hanging strips and the blades, the hanging strip rolling shafts supporting the hanging strips at the middle can effectively eliminate friction in the operation process, and the hanging strips and the rolling shafts form effective protection for the hanging strips, so that the occurrence of belt breakage accidents is favorably prevented; meanwhile, the damping capacity of the sling system and the damping capacity of the soft connecting blocks at the two sides of the cradle are superposed, so that the whole cradle has a good damping effect, blades are protected from impact damage, and the stability of the bracket is kept;
3. the sling and the soft backing plate are used as main contact elements for lifting and supporting the blade, and are made of soft materials, so that the fitness of the sling and the surface of the blade can be improved in the operation process, and the surface of the blade can be effectively protected from being crushed due to the flexible contact characteristic;
4. the profile supporting piece plays a role in supporting the side face of the blade, and is in a relatively rotatable connection state with the adjusting screw rod, and the adjusting screw rod is connected with the cradle body through the mounting support, so that the position and angle of the supporting plate can be adjusted simultaneously, the blade supported on the hanging strip can be conveniently protected in a contact manner, and compared with the scheme of supporting by the hanging strip singly, the profile supporting piece can be used for supporting the side face of the blade in an auxiliary manner, so that the risk that the blade falls off due to the swinging of the hanging strip can be reduced, and the safety and stability of the operation process can be further improved; the sling cam provides a certain opening and closing space for sling support, and the sling cam and the cradle can meet the blade support requirements of various specifications and different structural sizes;
5. the supporting plate and the adjusting screw are arranged in a flexible connection mode with adjustable positions, so that enough spatial freedom is provided for the supporting plate, the supporting plate can be better adapted to the surface form of the blade through proper adjustment, the optimal attaching state is formed, a satisfactory supporting effect is obtained, and the surface of the blade is prevented from being damaged;
6. the height of the blades can be adjusted through the lifter in the lifting process so as to facilitate construction operation, the lifting action is intelligently controlled by a PLC system, so that the two lifters synchronously and stably lift, the balance of the blades is kept, and the blades are always kept in a good supported state, which is also a key point for avoiding damaging the blades, and the lifting amplitude of the lifter can be preset and can also be manually controlled in real time;
7. the folding beams of the folding supporting mechanisms at the two sides of the lifter can be unfolded towards the side far away from the cradle body, and the acting points of the supporting legs are positioned at the outer side of the rack, so that powerful support is provided for the lifter, and the whole bracket has good stability and safety, thereby not only avoiding the damage of blades in the processing process, but also ensuring the safety of the production process;
8. the lifter can easily adjust the lifting height, is convenient for an operator to carry out all-dimensional processing on the surface of the blade, avoids the turning-over operation of the blade in the processing process, thereby eliminating a plurality of potential safety hazards, reducing the risks of unnecessary damages such as turnover, damage and the like of the blade in the processing process, effectively preventing the occurrence of safety accidents, lightening the labor intensity of the operator, improving the production efficiency and reducing the occupation of traveling vehicles in a workshop, therefore, the invention not only has excellent economic benefit, but also enhances the use safety;
9. the intelligent lifting bracket provided by the application is taken as a whole, all components are mutually matched in the operation process, the effects of good impact resistance, shock absorption and blade crushing prevention are achieved, and the operation stability and safety are effectively ensured, so that the device is particularly suitable for being used for machining fan blades with large integral length, fragile structure and complex surface shape; and when not in use, the bracket can be quickly disassembled into a plurality of sub-components, thereby being convenient for transportation, storage and maintenance.
Drawings
FIG. 1 is an isometric view of an intelligent lifting bracket for operation of a wind turbine blade;
FIG. 2 is an isometric view of a cradle portion of the intelligent lifting bracket for blade operation of the wind turbine generator shown in FIG. 1;
FIG. 3 is a schematic view of the sling damping device in the bassinet and its assembly on the bassinet body;
fig. 4 is an isometric view of the profile support in the bassinet;
FIG. 5 is an isometric view of a first lift;
FIG. 6 is an isometric view of the attachment bracket;
wherein, 1-the cradle, 2-the first lifter, 3-the second lifter, 4-the console, 5-the folding supporting mechanism, 6-the connecting support;
11-a cradle body, 12-a soft connecting block, 13-a hanging strip, 14-a molded surface supporting component, 15-a buffer device, 16-a fixed rod, 17-a hanging strip roller and 18-a hanging strip cam;
121-hanging shaft holes;
141-profile support, 142-support plate, 143-adjusting screw, 144-mounting support, 145-rod end bearing, 146-soft backing plate;
151-buffer rod, 152-disc spring group, 153-limit clamping block;
21-a frame, 22-a lifting screw rod, 23-a driving motor, 24-a lifting trolley, 25-a suspension shaft, 26-an encoder, 27-a base, 28-an electrical cabinet and 29-a fixed pin shaft;
51-folding beam, 52-telescopic beam, 53-supporting leg, 54-supporting foot;
61-bottom beam, 62-box seat, 63-rectangular tube, 64-U-shaped groove.
Detailed Description
The following examples further illustrate the present invention but are not to be construed as limiting the invention. Modifications and substitutions to methods, procedures, or conditions of the invention may be made without departing from the spirit of the invention.
In order to improve the degree of freedom of each accessory in the use process of the bracket and better solve the problems of poor stability of the blade during lifting, large difficulty in posture adjustment and the like, the embodiment discloses an intelligent lifting bracket for the operation of the blade of the wind turbine generator, which comprises a cradle 1, a first lifter 2 and a second lifter 3, wherein the first lifter 2 and the second lifter 3 are distributed oppositely in a mirror direction, and the cradle 1 is flexibly suspended between the first lifter 2 and the second lifter 3.
As shown in fig. 2, the cradle 1 includes a cradle body 11, soft connection blocks 12, a hanging strip 13 and a profile support assembly 14, the cradle body 11 is a U-shaped steel frame structure, the outer side surfaces of the left and right ends of the cradle body 11 are respectively provided with one soft connection block 12 made of soft material, the soft connection block 12 is arranged at the middle position of the side surface of the cradle body 11, the soft connection block 12 is provided with a suspension shaft hole 121 for suspension connection with a lifter, and the cradle body 11 is suspended on the first lifter 2 and the second lifter 3 by the soft connection blocks 12 at the two sides; the inner side of the cradle body 11 is provided with a plurality of groups of hanging strips 13 and profile supporting assemblies 14, the hanging strips 13 and the profile supporting assemblies 14 are arranged at intervals front and back on the positions, the number of the hanging strips 13 and the number of the profile supporting assemblies 14 can be adjusted according to factors such as the weight and the length of blades to be processed, in the embodiment, two groups of hanging strips 13 and three groups of profile supporting assemblies 14 are arranged on the inner side of the cradle body 11, and the two groups of hanging strips 13 and the three groups of profile supporting assemblies 14 are arranged at intervals front and back on the positions.
In order to reduce the risk of breakage of the hanging strip in the using process, two ends of the hanging strip 13 are respectively sleeved on a fixed rod 16 with a buffer device 15 in a penetrating way, the two fixed rods 16 connected with the two ends of the same hanging strip 14 are symmetrically distributed on the cradle body 11, the body of the hanging strip 13 is hung in the center of the cradle body 11 in a U-shaped free hanging way after bypassing a hanging strip roller 17 at the top of the cradle body 11, the structure of the buffer device 15 is shown in figure 3, the buffer device 15 comprises two buffer rods 151 and two disc spring groups 152, the two ends of the fixed rod 16 are respectively provided with one buffer rod 151 and one disc spring group 152, the top of each buffer rod 151 is connected with the corresponding fixed rod 16, the bottom of each buffer rod 151 penetrates through a frame plate on the cradle body 11 and is limited by a nut, the disc spring group 152 is sleeved on each buffer rod 151 and between the frame plate and the nut, a limiting clamping block 153 is arranged on each buffer rod 151 and above the frame plate, the limiting clamping block 153 can play a limiting role in limiting the buffer rod 151, and can pre-tighten the buffer group 152 in advance to obtain a better damping effect; the two ends of the sling roller 17 are connected with a sling cam 18 on the corresponding side, and the bottom end of the sling cam 18 is hinged and connected with the top of the cradle body 11.
Each group of the profile supporting components 14 includes two profile supporting members 141, the two profile supporting members 141 in the same group are symmetrically distributed on the left and right sides of the cradle body 11, the profile supporting members 141 are flexible supporting devices with adjusting functions, the structure is referred to fig. 4, and the cradle includes a supporting plate 142, four adjusting screws 143 and four mounting supports 144, the supporting plate 142 is made of steel material, one end of each adjusting screw 143, which is close to the supporting plate 142, is provided with a rod end bearing 145, the supporting plate 142 is hinged with the four adjusting screws 143 through the rod end bearings 145, and the other end of each adjusting screw 143 is mounted on the cradle body 11 through the mounting supports 144. In order to improve the flexibility of the contact surface of the supporting plate 142, make the contact surface of the supporting plate 142 have better adhesion with the surface of the blade during the operation, and also effectively protect the surface of the blade from being crushed as much as possible, a soft cushion plate 146 is disposed on the contact surface of the supporting plate 142 and the blade, in this embodiment, the soft cushion plate 146 is fixed on the inner side surface of the supporting plate 142 by gluing, and here, other fixing manners are also applicable as long as the soft cushion plate 146 and the supporting plate 142 can be stably connected, and the specific connection manner of the soft cushion plate 146 should not be considered as a limitation to the technical characteristics, and should be included in the protection scope of the present application.
The first lifter 2 and the second lifter 3 are the same type lifter and have the same structure size and performance. Fig. 5 shows the structure of the first lifter 2, which includes a frame 21, a lifting screw 22, a driving motor 23, a lifting carriage 24, a suspension shaft 25, an encoder 26, a base 27, and an electrical cabinet 28. The cradle comprises a rack 21, a base 27, a lifting screw 22, a lifting trolley 24, a lifting shaft 22, a shaft hole, a hanging shaft 25, a limit stop block and a cradle body 11, wherein the rack 21 is arranged above the base 27, the lifting screw 22 is arranged on the inner side of the rack 21, the lifting screw 22 is driven to rotate by a driving motor 23 at the top of the rack 21, the lifting trolley 24 is connected to the lifting screw 22 through a screw nut, the lifting trolley 24 can convert the rotary motion of the lifting screw 22 into the movement along the axial direction of the lifting screw, the shaft hole is arranged on the connecting surface of the lifting trolley 24, which is in matched connection with a soft connecting block 12, the hanging shaft 25 is sleeved in the shaft hole and can freely rotate and horizontally move in the shaft hole, the cradle body 11 is hung on the hanging shaft 25 on one corresponding side through the hanging shaft hole 121 on the soft connecting block 12 to realize the hanging connection of the cradle body 11, in order to prevent the hanging shaft 25 from sliding off from the lifting trolley 24 in the operation process, the hanging shaft 25 can be provided with the limit stop block at one end, the hanging shaft 25 in the lifting trolley 24, the cradle body 11 needs to adjust the hanging shafts 25 to the same height, and the cradle body 11 has the freedom degree of rotating around the two hanging shafts 25 and the left and right and left and right translating; the encoder 26 is arranged at the bottom end of the lifting screw 22 and can be used for acquiring lifting speed and stroke data of the first lifter 2 and the second lifter 3, the first lifter 2 and the second lifter 3 are controlled by a set of PLC system and have functions of intelligent lifting, stroke protection and the like, the encoder 26 is electrically connected with the control console 4 and feeds back the collected relevant data to the control console 4, and the control console 4 performs intelligent accurate control on the movement of the lifters after performing system operation according to the relevant data so as to ensure the synchronism of the actions of the two lifters and stably and uniformly adjust the height of the blade; the regulator cubicle is established in the frame side.
The front side and the rear side of the first lifter 2 and the second lifter 3 are respectively provided with a group of folding supporting mechanisms 5, the folding supporting mechanisms 5 arranged at two sides of the same lifter are distributed in a mirror image manner, one end of each folding supporting mechanism 5 is connected to the rack 21, the other end of each folding supporting mechanism 5 extends towards the outer side part far away from the cradle body 11, each group of folding supporting mechanisms 5 comprises a folding beam 51, a telescopic beam 52 and a supporting leg 53, the telescopic beam 52 is movably sleeved in the folding beam in a penetrating manner and can be telescopic along the axial direction of the folding beam 51, the supporting leg 53 is arranged at the outer side end of the telescopic beam 52, a supporting foot 54 capable of vertically telescopic is arranged in the supporting leg 53 and used for adjusting the setting position of the supporting mechanism, namely the height of the supporting leg is adjustable, and four supporting legs can be balanced in force.
In order to improve the integrity of the device during operation, the bottoms of the first lifter 2 and the second lifter 3 are connected into a whole through the connecting bracket 6, the connecting bracket 6 is a steel structural member, the specific structure of the connecting bracket 6 refers to fig. 6, and the connecting bracket comprises two bottom beams 61, two box seats 62 and two rectangular pipes 63, the two bottom beams 61 are horizontally and symmetrically arranged, the outer side surfaces of the two bottom beams 61 are respectively and correspondingly provided with one box seat 62, the top of the box seat 62 is opened, and the shape of the top opening cavity of the box seat 62 is adapted to the shape of a beam frame at the bottom of the U-shaped cradle body 11, so that the box seat 62 can be used as a support bracket after the cradle body 11 is placed when the box seat 62 is in a non-working state; a pair of rectangular tubes 63 are symmetrically arranged above the bottom beam 61, and the rectangular tubes 63 are not only cross beams in the support structure, but also lifting points of the pallet fork during transportation of the forklift.
In order to improve the operation freedom of the first lifter 2 and the second lifter 3, the inner side surfaces of two ends of the bottom beam 61 are respectively provided with a U-shaped clamping groove 64, the bases of the first lifter 2 and the second lifter 3 are provided with a fixed pin shaft 29 extending along the width direction of the bases, and two ends of the fixed pin shaft 29 are connected in the U-shaped clamping grooves 64 on the corresponding side in a clamping manner, so that the two lifters have the freedom of rotating around the centers of the fixed pin shafts 29 on the vertical surfaces and have no moving freedom on the plane; the freedom of rotation of the lifter in the vertical direction is beneficial to better improving the freedom of space of the cradle body 11.
In the present embodiment, the console 4 for operation and process connection of the intelligent control device is independently arranged.
When utilizing above-mentioned lift bracket to carry out fan blade's processing operation, at first need place the blade on the suspender 13 that is the U-shaped on the cradle 1, because the dead weight of blade is great, so place the initial meeting and produce great impact to the bracket is whole, and the initial condition of placing on the bracket the effect that the support point and blade surface can not reach the support of laminating completely, therefore bearing effect and bearing stability all fail to reach the optimum, so need set up appropriate shock attenuation on the bracket, buffer structure comes fast stabilization blade and reaches the effect of stabilizing the support, one can avoid local pressure too big, effectively prevent the blade damage (impact damage, vibrations damage, crush injury), two come also can protect suspender 13 itself, avoid suspender 13 to take place the fracture and cause major incident such as blade drop.
Based on the above reasons, this application selects to adopt flexible construction to connect cradle 1 and lift, the benefit that is not rigid contact between soft connecting block 12 and the suspension shaft 25 is when the blade is placed flexible suspender 13 on, cradle 1 has certain activity degree of freedom in the vertical, therefore can effectively alleviate the impact that the big weight blade brought to bracket itself, have fine shock attenuation effect, also make things convenient for suspender 13 can adjust the support gesture fast, can keep the blade steady, also can protect the blade to avoid impact damage, can play the effect that prevents cradle 1 from dropping from the lift.
The hanging strip 13 is made of flexible materials, so that the hanging strip can better adapt to the bottom surface characteristics of the blade in the vertical direction, and the cradle 13 has certain freedom degree in the horizontal direction and the circumferential direction, so that the blade is endowed with certain self-alignment capability in the horizontal direction; the buffer devices 15 at the two ends of the hanging strip 13 are mainly used for further relieving the impact generated between the hanging strip 13 and the blades, the hanging strip roller 17 for supporting the hanging strip 13 in the middle can effectively eliminate friction in the operation process, and the buffer devices 15 and the hanging strip roller 17 both play an effective protection role on the hanging strip 13 and can be used for reducing the risk of belt breakage accidents.
In addition, the effect of the first lifter and the second lifter which are arranged in the application is mainly used for adjusting the height of the lifted blade, the purpose is that the blade surface can be processed in all directions under the condition that the blade is not turned over midway, the risk that the blade is turned over can be further reduced by the operation that the blade is not turned over midway, the blade is prevented from being damaged, and safety accidents are avoided. In the process, the synchronous lifting of the two lifters is very important, and the synchronous lifting is beneficial to keeping the cradle 1 in a good supporting state all the time, which is the key point for avoiding damaging the blades.
The height adjustment is a relatively static position adjustment relative to the blade per se, which is not enough to damage the blade, but when the blade is initially placed on the hanging strip 13, if the first and second lifters are completely and rigidly fixed on the ground, the cradle 1 has a relatively large impact on the hanging shaft 25 when instantly sinking in the vertical direction under the pressure of the blade, which is not beneficial to reducing the vibration, so that the fixing pin 29 is designed at the bottom of the frame 21 in the application, and the fixing pin 29 is clamped in the U-shaped clamping groove 64 on the connecting bracket 6, thus, the two lifters have the freedom of rotation around the center of the fixing pin 29 at the bottom thereof in the vertical plane, and have no freedom of movement in the plane; the freedom of rotation of the lifter in the vertical direction is beneficial to better improving the freedom of space of the cradle body 11, and the impact of heavy blades on the bracket can be further relieved. The applicant also considers that if no external supporting device is arranged when the lifter rotates around the center of the fixed pin shaft 29 on the vertical surface, the arrangement stability of the lifter is inevitably influenced, so the applicant designs the folding supporting mechanism 5 on the side part of the lifter in a matching way, the folding supporting mechanism 5 provides powerful support for two wings of the lifter and the side part far away from the cradle 1, and the main body and the supporting feet of the supporting structure are provided with telescopic joints, so the supporting structure can be manually adjusted to be in a balanced supporting state, a good bracket stabilizing effect is achieved, the blades can be prevented from being damaged, and the safety in the production process can be better ensured.
After the blades are initially and stably placed in place, the hanging strips 13 are obviously insufficient to support and stabilize the blades, and the hanging strips 13 are flexible structures and have certain swinging performance, so that the blades are unstable and sway in the lifting process, and the falling risk of the fan blades is high; in order to solve the problem, a profile support member 141, which is a flexible support device with an adjustment function, is also designed in the present application, because the support plate 142 and the adjustment screw 143 are in a relatively rotatable connection state, and the connection position of the adjustment screw 143 on the cradle body 11 is adjustable, the position and the angle of the support plate 142 can be adjusted at the same time, which provides sufficient spatial freedom for the support plate 142, and a flexible soft cushion plate 146 is designed on the surface of the support plate 142, so that the support surfaces of a plurality of support plates 142 at different positions can be further attached to the surface of the blade, and in combination with the use of the hanging strip 13 completely attached to the surface of the blade, the two support devices cooperate to further stabilize the positions of the hanging strip and the blade, so that the blade does not shake during lifting, the lifting state formed by a plurality of support points can be automatically satisfied or can be quickly adapted to the posture and the surface form of the blade through real-time adjustment, and the blade is well supported by the support points, and the blade is uniformly supported, thereby avoiding excessive local pressure, and effectively preventing damage to the blade; moreover, the sling cam 18 provides a certain opening and closing space for sling support, and the cooperation of multiple components ensures that the cradle 1 can meet the blade support requirements of various specifications and different structural sizes.
The adaptability design of multi-structure and the cooperation of action process make the whole processing demand that accords with big weight fan blade very much of the lifting support that this application discloses, the security, stability and the economic nature of whole course of working have all obtained the promotion, can guarantee product quality effectively on this basis, improve production efficiency, alleviate intensity of labour.
Specifically, see that the intelligent lift bracket for wind turbine generator blade operation disclosed in this embodiment compares in traditional current bracket's advantage and lies in:
(1) The intelligent lifting bracket disclosed in the embodiment adopts flexible joint connection between each component: the cradle body 11 is hung on the hanging shafts 210 of the first lifter 2 and the second lifter 3 through the soft connecting block 12, and the fixed pin 29 of the lifters is inserted in the U-shaped clamping groove 64 of the connecting bracket 6. The advantages of this connection are: the cradle 1 can freely rotate on the vertical surface in the long axis direction of the lifting blade, and can better adapt to the bottom surface characteristics of the lifted blade; the transverse direction perpendicular to the vertical surface allows free translation with a certain amplitude, so that the blade can be automatically aligned in the horizontal direction, the first lifter 2 and the second lifter 3 can pitch back and forth at two sides of the blade with a certain amplitude, and the obstruction of the left and right translation of the cradle 1 is reduced, so that the impact on the blade can be quickly relieved during lifting, the supporting posture of the cradle 1 is adjusted, and the blade is stably and uniformly supported;
(2) The hanging strip 13 for directly lifting the blades is made of flexible materials and has certain elasticity, the disc spring groups 152 in the buffer devices 15 at the two ends of the hanging strip 13 provide good shock absorption performance for the fixed rod 16 through the buffer rods 151, the impact generated between the hanging strip 13 and the blades can be effectively relieved, the friction of the hanging strip 13 during lifting and stretching is eliminated by the hanging strip rolling shaft 17 for supporting the hanging strip 13, the hanging strip 13 provides powerful protection in the aspects, and the risk that the hanging strip 13 is broken due to the impact of the blades is avoided. Meanwhile, the cushioning ability of the hanging strip 13 superposes the damping effect given by the soft connecting blocks 12 on the two sides of the cradle 1, so that the cradle 1 has better damping ability, and the hanging strip is favorable for protecting the blades from impact damage and keeping the stability of the bracket.
(3) The hanging strips 13 and the molded surface supporting base plates 146 which directly lift and support the blades are made of soft materials, so that the surface of the blades can be better attached to the surfaces of the blades, and the surfaces of the blades can be effectively protected from being crushed;
(4) The four corners of the profile supporting piece 141 are connected with adjusting screws 143, so that the left and right positions of the supporting plate 142 can be adjusted, the sling cam 18 provides a certain left and right opening and closing space for the sling 13 to support, and the two spaces can ensure that the cradle 1 can meet the blade supporting requirements of various specifications and different structural sizes;
(5) The left-right adjustment function of the support plate 142 and the aligning function of the rod end bearing 145 can enable the support plate 142 and the soft cushion block 146 thereon to easily align the fitting state with the surface of the blade, ensure the balanced stress of the support surface and avoid the surface of the blade from being damaged;
(6) The PLC control system can intelligently and accurately control the lifting speed and the lifting stroke of the first lifter 2 and the second lifter 3 by acquiring data through the encoder 26 arranged at the bottom of the lifting screw rod of the lifter so as to ensure the synchronism of the actions of the two lifters and stably and uniformly adjust the height of the blade;
(7) The folding supporting mechanisms 52 at both sides of the lifter, the folding beams 51 of which can be unfolded towards the side, the acting points of the supporting legs 53 are positioned at the side part of the frame 21 and offset towards the direction far away from the cradle 1, and powerful supports are provided for both wings of the lifter and the side part far away from the cradle 1, so that the whole bracket has good stability and safety;
(8) The lifter can easily adjust the lifting height, is convenient for an operator to carry out all-dimensional processing on the surface of the blade, avoids the turning-over operation of the blade in the middle of processing, thereby eliminating a plurality of potential safety hazards, reducing the possibility of unnecessary damage of the blade, reducing the labor intensity of the operator, improving the production efficiency and reducing the occupation of traveling vehicles in a workshop;
(9) The intelligent lifting bracket for the operation of the blades of the wind turbine generator set, which is shown in the embodiment, can be quickly disassembled into a plurality of parts when not in use, so that the transportation, the storage and the maintenance are convenient.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. However, the above description is only an example of the present invention, the technical features of the present invention are not limited thereto, and any other embodiments that can be obtained by those skilled in the art without departing from the technical solution of the present invention should be covered by the claims of the present invention.
Claims (9)
1. The intelligent lifting bracket for the operation of the blades of the wind turbine generator is characterized by comprising a cradle, a first lifter and a second lifter, wherein the cradle is suspended between the first lifter and the second lifter;
the cradle comprises a cradle body, hanging strips and a profile supporting component, wherein a plurality of groups of hanging strips and profile supporting components are arranged on the inner side of the cradle body;
two ends of the hanging strip are respectively sleeved on a fixed rod with a buffer device in a penetrating way, and the strip body of the hanging strip is wound around the hanging strip rolling shaft positioned at the top of the cradle body and then falls in the center of the cradle body;
each group of profile supporting assembly comprises two profile supporting pieces which are symmetrically arranged, each profile supporting piece comprises a supporting plate, four adjusting screws and four mounting supports, the supporting plate is rotatably connected with one end of each adjusting screw, and the other end of each adjusting screw is mounted on the cradle body through the mounting supports;
a group of folding supporting mechanisms are respectively arranged at the front side and the rear side of the first lifter and the second lifter, one end of each folding supporting mechanism is connected to the rack, the other end of each folding supporting mechanism extends to the outer side part far away from the cradle body, each group of folding supporting mechanisms comprises a folding beam, a telescopic beam and a supporting leg, the telescopic beam is movably sleeved in the folding beam in a penetrating manner and can be telescopic along the axial direction of the folding beam, the supporting leg is arranged at the outer side end of the telescopic beam, and a supporting foot capable of vertically telescopic is arranged in the supporting leg;
two ends of the sling roller are respectively connected to a sling cam on the corresponding side, and the bottom end of the sling cam is hinged to the top of the cradle body;
the outer side surfaces of the left end and the right end of the cradle body are respectively provided with a soft connecting block for hanging and connecting a lifter, and the outer side surface of each soft connecting block is provided with a hanging shaft hole;
the inner side surfaces of the lifting trolleys on the first lifter and the second lifter are provided with shaft holes, one end of the suspension shaft is sleeved in the shaft hole, and the soft connecting block is connected to the suspension shaft in a hanging manner.
2. The intelligent lifting bracket for the operation of the blades of the wind turbine generator set according to claim 1, wherein the hanging strips freely hang in a U-shaped manner, and the plurality of groups of hanging strips and the profile supporting components are arranged on the cradle body at intervals in the front-back direction.
3. The intelligent lifting bracket of claim 1, wherein two fixing rods connecting two ends of the same hanging strip are symmetrically distributed on the cradle body, the buffering device comprises two buffering rods and two disc spring sets, a buffering rod and a disc spring set are respectively arranged at two ends of each fixing rod, the top of each buffering rod is connected with the corresponding fixing rod, the bottom of each buffering rod passes through a frame plate on the cradle body and is limited by a nut, the disc spring sets are sleeved on the buffering rods and between the frame plates and the nuts, and a limiting clamping block is connected on each buffering rod and above the frame plate.
4. The intelligent lifting bracket for wind turbine blade operation according to claim 1, wherein the cradle body has a U-shaped steel frame structure, and the soft connection block is disposed at a middle position of a side surface of the cradle body.
5. The intelligent lifting bracket for the operation of the blades of the wind turbine generator set according to claim 1, wherein the supporting plate is made of steel material, and a soft backing plate is arranged on a supporting surface of the supporting plate, which is in contact with the blades.
6. The intelligent lifting bracket for the blade operation of the wind turbine generator set according to claim 1, wherein the first lifter and the second lifter are symmetrically distributed on both sides of the cradle, the first lifter and the second lifter are the same type of lifter, and the lifter comprises a frame, a lifting screw, a driving motor, a lifting trolley, a suspension shaft and a base; the frame is established in the base top, is equipped with elevating screw in the frame inboard, and elevating screw is rotatory by the driving motor drive at frame top, and the lift dolly passes through the screw nut and connects on elevating screw.
7. The intelligent lifting bracket for wind turbine blade operation as claimed in claim 1, wherein the folding support mechanisms provided on both sides of the same lifter are symmetrically provided.
8. The intelligent lifting bracket for the operation of the blades of the wind turbine generator set according to claim 6, wherein the bottoms of the first lifter and the second lifter are connected through a connecting bracket, the connecting bracket comprises two bottom beams, two box seats and two rectangular pipes, the two bottom beams are horizontally and symmetrically arranged, the box seats are respectively and correspondingly arranged on the outer side surfaces of the two bottom beams, and the shape of an opening cavity at the top of each box seat is matched with the shape of a beam frame at the bottom of the cradle body; a pair of rectangular tubes is symmetrically arranged above the bottom beam.
9. The intelligent lifting bracket for wind turbine blade operation according to claim 8, wherein the inner side surfaces of the two ends of the bottom beam are respectively provided with a U-shaped slot, the bases of the first lifter and the second lifter are respectively provided with a fixed pin shaft, and the two ends of the fixed pin shaft are connected in the U-shaped slots on the corresponding side in a clamping manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211276462.7A CN115353024B (en) | 2022-10-19 | 2022-10-19 | Intelligent lifting bracket for operation of blades of wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211276462.7A CN115353024B (en) | 2022-10-19 | 2022-10-19 | Intelligent lifting bracket for operation of blades of wind turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115353024A CN115353024A (en) | 2022-11-18 |
| CN115353024B true CN115353024B (en) | 2023-02-28 |
Family
ID=84008174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211276462.7A Active CN115353024B (en) | 2022-10-19 | 2022-10-19 | Intelligent lifting bracket for operation of blades of wind turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115353024B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117509476A (en) * | 2023-08-14 | 2024-02-06 | 中建八局第一建设有限公司 | Electromechanical pipeline installation device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202243397U (en) * | 2011-08-17 | 2012-05-30 | 三一汽车起重机械有限公司 | Movable landing leg with variable span and movable type engineering machinery provided with movable landing leg |
| CN205673151U (en) * | 2016-05-20 | 2016-11-09 | 苏州普洛代尔机电有限公司 | Easily come to a complete stop wind power blade tip lightening operation bracket |
| CN205802873U (en) * | 2016-07-04 | 2016-12-14 | 连云港中复连众复合材料集团有限公司 | A kind of wind electricity blade tip support more changing device |
| CN107791171A (en) * | 2017-09-26 | 2018-03-13 | 上海玻璃钢研究院东台有限公司 | A kind of adjustable height wind electricity blade operation bracket |
| CN211770026U (en) * | 2020-01-14 | 2020-10-27 | 中材科技（阜宁）风电叶片有限公司 | Liftable bracket for wind power blade paint room |
| CN211971718U (en) * | 2019-12-27 | 2020-11-20 | 上海中帧机器人控制技术发展有限公司 | Wind power blade ring vehicle capable of being automatically opened and closed |
| CN215516426U (en) * | 2021-08-20 | 2022-01-14 | 上海协同钢结构工程有限公司 | Hoisting accessory is accepted to steel folded plate |
| CN114852896A (en) * | 2022-03-15 | 2022-08-05 | 中船第九设计研究院工程有限公司 | Hoisting device for slipway operation |
| CN114888455A (en) * | 2022-05-31 | 2022-08-12 | 阳江市五金刀剪产业技术研究院 | Blade laser cutting system and cutting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112513457A (en) * | 2018-04-02 | 2021-03-16 | 泰普爱复合材料股份有限公司 | Individual emergency braking system for a wind turbine blade rotation device |
-
2022
- 2022-10-19 CN CN202211276462.7A patent/CN115353024B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202243397U (en) * | 2011-08-17 | 2012-05-30 | 三一汽车起重机械有限公司 | Movable landing leg with variable span and movable type engineering machinery provided with movable landing leg |
| CN205673151U (en) * | 2016-05-20 | 2016-11-09 | 苏州普洛代尔机电有限公司 | Easily come to a complete stop wind power blade tip lightening operation bracket |
| CN205802873U (en) * | 2016-07-04 | 2016-12-14 | 连云港中复连众复合材料集团有限公司 | A kind of wind electricity blade tip support more changing device |
| CN107791171A (en) * | 2017-09-26 | 2018-03-13 | 上海玻璃钢研究院东台有限公司 | A kind of adjustable height wind electricity blade operation bracket |
| CN211971718U (en) * | 2019-12-27 | 2020-11-20 | 上海中帧机器人控制技术发展有限公司 | Wind power blade ring vehicle capable of being automatically opened and closed |
| CN211770026U (en) * | 2020-01-14 | 2020-10-27 | 中材科技（阜宁）风电叶片有限公司 | Liftable bracket for wind power blade paint room |
| CN215516426U (en) * | 2021-08-20 | 2022-01-14 | 上海协同钢结构工程有限公司 | Hoisting accessory is accepted to steel folded plate |
| CN114852896A (en) * | 2022-03-15 | 2022-08-05 | 中船第九设计研究院工程有限公司 | Hoisting device for slipway operation |
| CN114888455A (en) * | 2022-05-31 | 2022-08-12 | 阳江市五金刀剪产业技术研究院 | Blade laser cutting system and cutting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115353024A (en) | 2022-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104214053B (en) | The system and method for mobile wind turbine rotor blade | |
| CN115353024B (en) | Intelligent lifting bracket for operation of blades of wind turbine generator | |
| US9358996B2 (en) | Blade cart for a wind turbine blade | |
| CN111170136B (en) | Multi-blade hoisting equipment for wind generating set and hoisting method thereof | |
| CN211151877U (en) | Adjustable photovoltaic support mounting device | |
| CN209023156U (en) | Mobile aircraft overhauls support device | |
| CN217261634U (en) | Protection device for transportation of marine power generation fan foundation member | |
| CN115405805A (en) | Safety protection structure (for electric power engineering operation) | |
| CN109178141A (en) | A kind of warehoused cargo handbarrow for obstacle detouring of freely turning | |
| CN210001550U (en) | wind power generation overhauling device | |
| CN204474231U (en) | A kind of derricking gear | |
| CN204400135U (en) | The cabin conveying arrangement of wind power generating set | |
| CN217195168U (en) | Steam turbine generator overhauls strutting arrangement | |
| CN202840853U (en) | Rotary motor maintaining device | |
| WO2016084988A1 (en) | Platform for maintenance of blade with y-shaped balance adjustment unit | |
| CN211813292U (en) | Aluminum alloy single-mast column anti-tilt supporting aerial work platform | |
| CN112524453A (en) | Mounting rack for multifunctional motor | |
| CN219378787U (en) | High building reinforcing bar bending machine of security | |
| CN213060097U (en) | Stable supporting device for fan blade maintenance platform | |
| CN218950821U (en) | Device for preventing tail slipping during hoisting of wind power single blade | |
| CN210889488U (en) | Novel vertical single-stage centrifugal water pump equipment for industrial production | |
| CN214947890U (en) | Elastic damping and fixing device for rotary cylinder for wind sailing wing | |
| CN214499084U (en) | Four-lane section cantilever type two-lining health maintenance trolley | |
| CN221093579U (en) | Electric power overhauls equipment | |
| CN216336261U (en) | Fan blade stable installation mechanism for wind power generation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |