Single-blade lifting appliance

Abstract

The utility model discloses a single-blade lifting appliance, which relates to the technical field of disassembly and assembly of wind power equipment, the single-blade lifting appliance comprises a lifting frame, a first fixing seat, a second fixing seat, an autorotation frame and a lifting belt, the first fixing seat and the second fixing seat are respectively arranged at two ends of the lifting frame, the first fixing seat comprises a first main body and a first tripping structure, and the second fixing seat comprises a second main body and a second tripping structure. The autorotation frame comprises a supporting arm, a rotating set arm, a hanging plate assembly and an adjusting assembly, the supporting arm is rotationally connected with the rotating set arm and fixedly connected with the second fixing base, the end, away from the supporting arm, of the rotating set arm is connected with the adjusting assembly, and the adjusting assembly comprises an adjusting body and a second tripping structure; one end of the hanging plate assembly is hinged to the adjusting body through a second tripping structure, and the other end of the hanging plate assembly is hinged to the first body through a first tripping structure. The two ends of the hanging belt are connected to the second fixing base and the hanging plate assembly respectively. According to the technical scheme, the damage risk of the blade in the air transportation process can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and assembly of wind power equipment, and particularly relates to a single-blade hoist. Background Art

[0002] The blade is an important component of a wind turbine. To meet the growing power generation demand, the volume of wind turbines has gradually increased, resulting in larger sizes and weights of the blades, which poses new challenges to the disassembly and assembly processes of the blades. Currently, some manufacturers use horizontal lifting hoists to assist in the installation and disassembly of blades. The sling is opened and closed by a rotating mechanism, and in cooperation with a crane, the sling can hold the blade in the air. At the same time, the rotating mechanism also surrounds the outside of the blade. During the process of transporting the blade in the air, due to unreasonable adjustment of the sling length and external environment, etc., the horizontal lifting hoist will sway with the lifting crane, so there may be a relative displacement between the blade and the rotating mechanism, causing a collision between the two, thus resulting in a relatively high risk of blade damage.

[0003] In view of this, it is necessary to propose a single-blade hoist to solve or at least alleviate the above technical problems. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a single-blade hoist, aiming to solve the technical problem of a relatively high risk of blade damage when using a horizontal lifting hoist to disassemble and assemble the fan blades.

[0005] To achieve the above purpose, the utility model proposes a single-blade hoist, comprising:

[0006] A hanger;

[0007] A first fixed seat, the first fixed seat is fixedly installed at one end of the hanger, and the first fixed seat includes a first main body and a first release structure installed on the first main body;

[0008] A second fixed seat, the second fixed seat is fixedly installed at the other end of the hanger;

[0009] A self-rotating frame, the self-rotating frame includes a support arm, a rotating group arm, a hanging plate assembly and an adjusting assembly, and the rotating group arm is rotatably connected to one end of the support arm;

[0010] The other end of the support arm is fixedly connected to the second fixed seat, the end of the rotating group arm away from the support arm is connected to the adjusting assembly, the adjusting assembly includes an adjusting main body and a second release structure, one end of the hanging plate assembly is hinged to the adjusting main body through the second release structure, and the other end of the hanging plate assembly is hinged to the first main body through the first release structure;

[0011] A sling, one end of the sling is installed on the second fixing seat, and the other end is installed on the hanging plate assembly.

[0012] In one embodiment, the hanging plate assembly includes a hanging plate main body and a first telescopic shaft movably arranged in the hanging plate main body. The hanging plate main body is provided with a first installation space. The first telescopic shaft includes a first extended position and a first retracted position.

[0013] When the first telescopic shaft is in the first extended position, the first telescopic shaft is accommodated in the first installation space and passes through one end of the sling. When the first telescopic shaft is in the first retracted position, the first telescopic shaft disengages from the first installation space.

[0014] In one embodiment, the second fixing seat includes a second main body and a second telescopic shaft movably arranged in the second main body. The second main body is provided with a second installation space. The second telescopic shaft includes a second extended position and a second retracted position.

[0015] When the second telescopic shaft is in the second extended position, the second telescopic shaft is accommodated in the second installation space and passes through the other end of the sling. When the second telescopic shaft is in the second retracted position, the second telescopic shaft disengages from the second installation space.

[0016] In one embodiment, the hanging plate assembly further includes a rotating end guide wheel, and the rotating end guide wheel is installed on the hanging plate main body.

[0017] In one embodiment, the second fixing seat further includes a fixed end guide wheel, and the fixed end guide wheel is installed on the second main body.

[0018] In one embodiment, an arc-shaped through hole is provided on the adjusting main body, and the adjusting main body is connected to the rotating group arm through the arc-shaped through hole, so that the adjusting main body can rotate relative to the rotating group arm.

[0019] In one embodiment, the self-rotating frame further includes a first telescopic cylinder and a second telescopic cylinder. The rotating group arm includes a rotating arm and a cross arm. The cross arm is rotatably connected to the support arm. One end of the first telescopic cylinder is installed on the support arm, and the other end is installed on the cross arm. The rotation angle between the cross arm and the support arm is controlled by the first telescopic cylinder.

[0020] The rotating arm is rotatably connected to the cross arm. One end of the second telescopic cylinder is installed on the rotating arm, and the other end is installed on the cross arm. The rotation angle between the rotating arm and the cross arm is controlled by the second telescopic cylinder.

[0021] In one embodiment, the support arm includes an upper support arm, a lower support arm, and a support end pin shaft. The lower support arm is slidably installed on the outer side of the upper support arm. The upper support arm and the lower support arm are connected by the support end pin shaft. The upper support arm is fixedly connected to the second fixed seat;

[0022] The rotating arm includes a rotating upper arm, a rotating lower arm, and a rotating end pin shaft. The rotating lower arm is slidably installed on the outer side of the rotating upper arm. The rotating upper arm and the rotating lower arm are connected by the rotating end pin shaft. The rotating upper arm is connected to the adjusting assembly.

[0023] In one embodiment, the cross arm includes a first cross section arm, a second cross section arm, and a bottom pin shaft. The second cross section arm is slidably installed on the outer side of the first cross section arm. The first cross section arm and the second cross section arm are connected by the bottom pin shaft;

[0024] The first cross section arm is connected to the support arm, and the second cross section arm is connected to the rotating arm; or,

[0025] The first cross section arm is connected to the rotating arm, and the second cross section arm is connected to the support arm.

[0026] In one embodiment, the single-blade sling further includes an image monitor. The image monitor is installed on the suspension bracket. The image monitor includes a monitoring head, and the monitoring head faces the self-rotating frame.

[0027] In the technical solution provided by the present utility model, the single-blade sling includes a suspension bracket, a first fixed seat, a second fixed seat, a self-rotating frame, and a sling. Among them, the first fixed seat is fixedly installed at one end of the suspension bracket. The first fixed seat includes a first main body and a first release structure installed on the first main body; the second fixed seat is fixedly installed at the other end of the suspension bracket; the self-rotating frame includes a support arm, a rotating group arm, a hanging plate assembly, and an adjusting assembly. The rotating group arm is rotatably connected to one end of the support arm; the other end of the support arm is fixedly connected to the second fixed seat. The end of the rotating group arm away from the support arm is connected to the adjusting assembly. The adjusting assembly includes an adjusting main body and a second release structure. One end of the hanging plate assembly is hinged to the adjusting main body through the second release structure, and the other end of the hanging plate assembly is hinged to the first main body through the first release structure; one end of the sling is installed on the second fixed seat, and the other end is installed on the hanging plate assembly. Through this setting, the rotating group arm can drive the sling to open and close, so that the sling can hold the blade. At the same time, when transporting the blade, control the second release structure to disconnect the rotating group arm from the hanging plate assembly, and control it to rotate away from the blade, so as to increase the distance between the rotating group arm and the blade, avoid the risk of collision during air transportation, and further reduce the risk of blade damage. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0029] Figure 1 Schematic structural diagram of an embodiment of the single-blade sling provided by the present invention;

[0030] Figure 2 Partial structural diagram of an embodiment of the single-blade sling provided by the present invention;

[0031] Figure 3 Schematic structural diagram of another part of an embodiment of the single-blade sling provided by the present invention;

[0032] Figure 4 Schematic structural diagram of yet another part of an embodiment of the single-blade sling provided by the present invention.

[0033] Explanation of the reference numerals in the drawings:

[0034] 100, single-blade sling; 1, hanging frame; 11, main beam; 12, end beam; 2, first fixing seat; 21, first main body; 22, first release structure; 3, second fixing seat; 31, second main body; 32, second sling release structure; 33, fixed-end guide wheel; 4, self-rotating frame; 41, support arm; 411, upper support arm; 412, lower support arm; 413, support-end pin shaft; 42, rotating group arm; 421, rotating arm; 4211, upper rotating arm; 4212, lower rotating arm; 4213, rotating-end pin shaft; 422, cross arm; 4221, first cross-section arm; 4222, second cross-section arm; 4223, bottom pin shaft; 43, hanging plate assembly; 431, hanging plate main body; 432, first sling release structure; 433, rotating-end guide wheel; 44, adjusting assembly; 441, adjusting main body; 4411, arc-shaped through hole; 442, second release structure; 45, first telescopic cylinder; 46, second telescopic cylinder; 5, sling; 51, flat belt; 52, lifting ring; 6, lifting belt; 7, pressing mechanism.

[0035] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0039] With the booming development of China's wind power market, wind turbines are constantly optimized and upgraded. In order to improve the wind power generation efficiency, the size of the blades of wind turbine generators has gradually increased, resulting in an increase in the difficulty of the installation and removal work of large-size blades.

[0040] In order to meet the needs of the installation and removal work of large-size wind turbine blades, some manufacturers use a horizontal lifting sling to assist the crane to complete the disassembly and assembly work of large-size wind turbine blades. This horizontal lifting sling mainly uses a rotating mechanism to drive the sling to rotate and open in the air, and then cooperate with the crane to move, so that the wind turbine blade can be caught by the sling in the air and transported to the ground.

[0041] However, through the applicant's observation and research, it is found that after the rotating mechanism drives the sling to hold the fan blade, the rotating mechanism gradually returns to its initial state. At this time, the rotating mechanism is arranged around the periphery of the sling. In some working conditions, it is difficult for the length of the sling to exactly match the size of the rotating mechanism. Therefore, after the sling holds the fan blade, due to the action of the weight of the fan blade, the fan blade may come into contact with the surrounding rotating mechanism. Coupled with external environmental factors such as the shaking during blade transportation and strong wind in the air, relative displacement may occur between the fan blade and the rotating mechanism, resulting in collision and friction, increasing the risk of damage to the fan blade.

[0042] In view of the above situation, the present utility model proposes a single-blade sling to solve the above technical problems.

[0043] Please refer to Figure 1 , in an embodiment of the present utility model, the single-blade sling 100 includes a suspension bracket 1, a first fixing seat 2, a second fixing seat 3, a self-rotating frame 4 and a sling 5. Among them, the first fixing seat 2 is fixedly installed at one end of the suspension bracket 1. The first fixing seat 2 includes a first main body 21 and a first release structure 22 installed on the first main body 21; the second fixing seat 3 is fixedly installed at the other end of the suspension bracket 1; the self-rotating frame 4 includes a support arm 41, a rotating group arm 42, a hanging plate assembly 43 and an adjusting assembly 44. The rotating group arm 42 is rotatably connected to one end of the support arm 41; the other end of the support arm 41 is fixedly connected to the second fixing seat 3. The end of the rotating group arm 42 away from the support arm 41 is connected to the adjusting assembly 44. The adjusting assembly 44 includes an adjusting main body 441 and a second release structure 442. One end of the hanging plate assembly 43 is hinged to the adjusting main body 441 through the second release structure 442, and the other end of the hanging plate assembly 43 is hinged to the first main body 21 through the first release structure 22; one end of the sling 5 is installed on the second fixing seat 3, and the other end is installed on the hanging plate assembly 43.

[0044] Specifically, the hanger 1 includes a main beam 11 arranged horizontally. End beams 12 are provided at both ends of the main beam 11 in the length direction thereof, and the length direction of the end beam 12 is perpendicular to the length direction of the main beam 11. A first fixing seat 2 and a second fixing seat 3 are respectively arranged at both ends along the length direction of the end beam 12. The first fixing seats 2 and the second fixing seats 3 are provided at both ends of the two end beams 12, and the two first fixing seats 2 are simultaneously arranged on one side of the main beam 11 in the width direction, and the two second fixing seats 3 are simultaneously arranged on the other side of the main beam 11 in the width direction. Among them, the first fixing seat 2 includes a first main body 21 and a first tripping structure 22, and the first tripping structure 22 can automatically lock or release one end of the hanging plate main body 431; the adjusting assembly 44 includes an adjusting main body 441 and a second tripping structure 442, and the second tripping structure 442 can automatically lock or release the other end of the hanging plate main body 431. The first fixing seat 2 and the second fixing seat 3 are both fixedly connected to the end beam 12, and one end of the support arm 41 is fixedly connected to the second fixing seat 3, and the other end is connected to the rotating group arm 42, so that the rotating group arm 42 can rotate around the end of the support arm 41 away from the second fixing seat 3. At the same time, the end of the rotating group arm 42 away from the support arm 41 is connected to the adjusting main body 441 in the adjusting assembly 44. In this embodiment, both ends of the sling 5 are respectively connected to the hanging plate assembly 43 and the second fixing seat 3. A lifting belt 6 for connecting with an external crane is further provided at the top of the main beam 11. Under the action of the crane, the single-blade lifting tool 100 can move integrally in the air and stay in the air. Through this setting, in the process of removing the fan blade, when the blade is adjusted to the feathering attitude parallel to the ground and the single-blade lifting tool 100 is moved to a position matching the blade, remotely control the first tripping structure 22 to relax the hanging plate assembly 43, so that the rotating arm 421 can rotate. At this time, one end of the sling 5 is hung on the hanging plate assembly 43, so that one end of the sling 5 rotates downwardly following the rotating arm 421, and thus an opening is formed between this end of the sling 5 and the end beam 12. The size of the opening needs to be larger than the thickness of the blade. At this time, the crane drives the single-blade lifting tool 100 to move, so that the blade enters the gap between the sling 5 and the end beam 12 through the opening. Then remotely control the rotating arm 421 to drive the sling 5 to rotate back. When the rotating arm 421 drives the sling 5 back to the initial position, the first tripping structure 22 locks the first main body 21 and the hanging plate assembly 43. At this time, the sling 5 holds the bottom of the blade. In order to prevent the bottom of the blade from colliding with the rotating group arm 42, at this time, remotely control the second tripping structure 442 to disengage the hanging plate assembly 43 from the adjusting main body 441. At this time, the rotating group arm 42 can rotate again, and control it to rotate in a direction away from the blade, so as to increase the gap between the rotating group arm 42 and the blade, and keep this state to hoist the blade to the ground.Thus, even if the length of the sling 5 does not match the mass of the blade, resulting in redundancy in the length of the sling 5, or there is a certain external environmental effect, it is still possible to prevent the blade from colliding with the rotating arm 42 during transportation, thereby reducing the risk of blade damage. Among them, the hanger 1 can be a horizontal hanger.

[0045] In addition, in order to further reduce the influence of external environmental factors, in this embodiment, a pressing mechanism 7 is further provided at the bottom of the end beam 12. After the sling 5 holds the blade, the pressing mechanism 7 is activated to apply pressure to the top of the blade, so that the sling 5 is tightened, thereby reducing the shaking of the blade during transportation.

[0046] In this embodiment, the single-blade hoist 100 includes a control component. The first release structure 22, the second release structure 442, and the rotating arm 421 are all electrically connected to the control component, enabling the staff to remotely control the movement of the single-blade hoist 100 in the air on the ground.

[0047] In the technical solution provided by the present invention, the single-blade hoist 100 includes a hanger 1, a first fixing seat 2, a second fixing seat 3, a self-rotating frame 4, and a sling 5. Among them, the first fixing seat 2 is fixedly installed at one end of the hanger 1. The first fixing seat 2 includes a first main body 21 and a first release structure 22 installed on the first main body 21; the second fixing seat 3 is fixedly installed at the other end of the hanger 1; the self-rotating frame 4 includes a support arm 41, a rotating arm 42, a hanging plate assembly 43, and an adjusting assembly 44. The rotating arm 42 is rotatably connected to one end of the support arm 41; the other end of the support arm 41 is fixedly connected to the second fixing seat 3. The end of the rotating arm 42 away from the support arm 41 is connected to the adjusting assembly 44. The adjusting assembly 44 includes an adjusting main body 441 and a second release structure 442. One end of the hanging plate assembly 43 is hinged to the adjusting main body 441 through the second release structure 442, and the other end of the hanging plate assembly 43 is hinged to the first main body 21 through the first release structure 22; one end of the sling 5 is installed on the second fixing seat 3, and the other end is installed on the hanging plate assembly 43. Through this setting, the rotating arm 42 can drive the sling 5 to open and close, so that the sling 5 holds the blade. At the same time, during the transportation of the blade, the second release structure 442 is controlled to disconnect the rotating arm 42 from the hanging plate assembly 43, and it is controlled to rotate away from the blade, so as to increase the distance between the rotating arm 42 and the blade, avoid the risk of collision during air transportation, and further reduce the risk of blade damage.

[0048] Further, in an embodiment of the present utility model, the hanging plate assembly 43 includes a hanging plate main body 431 and a first telescopic shaft movably disposed in the hanging plate main body 431. The hanging plate main body 431 is provided with a first installation space. The first telescopic shaft includes a first extended position and a first retracted position. When the first telescopic shaft is in the first extended position, the first telescopic shaft is received in the first installation space and passes through one end of the sling 5. When the first telescopic shaft is in the first retracted position, the first telescopic shaft disengages from the first installation space. For details, please refer to Figure 1 , the hanging plate assembly 43 includes a hanging plate main body 431 and a first sling release mechanism for the sling 5. The first sling release structure 432 includes a first telescopic shaft and a first driving portion. The first driving portion can drive the first telescopic shaft to move in the first installation space. When one end of the sling 5 enters the first installation space, the first driving portion drives the first telescopic shaft to extend into the first installation space and pass through the sling 5, so that this end of the sling 5 can be hung on the first telescopic shaft, thereby connecting the sling 5 to the hanging plate main body 431. At this time, the first telescopic shaft is in the first extended position. When it is necessary to disconnect the sling 5, the first driving portion drives the first telescopic shaft to disengage from the first installation space. At this time, the sling 5 can fall naturally. Through this setting, the efficiency and automation degree of installing or uninstalling the sling 5 on the hanging plate assembly 43 can be improved.

[0049] Still further, in an embodiment of the present utility model, the second fixing seat 3 includes a second main body 31 and a second telescopic shaft movably disposed in the second main body 31. The second main body 31 is provided with a second installation space. The second telescopic shaft includes a second extended position and a second retracted position. When the second telescopic shaft is in the second extended position, the second telescopic shaft is received in the second installation space and passes through the other end of the sling 5. When the second telescopic shaft is in the second retracted position, the second telescopic shaft disengages from the second installation space. For details, please refer to Figure 1, the second fixing seat 3 includes a second main body 31 and a second sling release mechanism. The second sling release structure 32 includes a second telescopic shaft and a second driving part. The second driving part can drive the second telescopic shaft to move in the second installation space. When the other end of the sling 5 enters the second installation space, the second driving part drives the second telescopic shaft to extend into the second installation space and pass through the sling 5, so that this end of the sling 5 can be hung on the second telescopic shaft, thereby connecting the sling 5 to the second main body 31. At this time, the second telescopic shaft is in the second extended position. When it is necessary to disconnect the sling 5, the second driving part drives the second telescopic shaft to disengage from the second installation space, and at this time, the sling 5 can fall naturally. Through this setting, the efficiency and automation degree of installing or uninstalling the sling 5 on the second fixing seat 3 can be improved. By providing a first sling release structure 432 on the hanging plate assembly 43 and a second sling release structure 32 on the second fixing seat 3 at the same time, both ends of the sling 5 can be separately uninstalled. When a failure occurs during the uninstallation of one end of the sling 5, the other end of the sling 5 can be uninstalled in time, thus avoiding the situation where the blade cannot be relaxed.

[0050] In an embodiment of the present invention, the hanging plate assembly 43 further includes a rotating end guide pulley 433, and the rotating end guide pulley 433 is installed on the hanging plate main body 431. Specifically, please refer to Figure 2 , at least one guide pulley is installed at the top wall of the first installation space as the rotating end guide pulley 433. When installing the sling 5, one end of the sling 5 is tied with a traction rope, and one end of the traction rope bypasses the rotating end guide pulley 433 and extends to the ground. The staff pulls the traction rope manually or by a winch, so as to pull one end of the sling 5 into the first installation space. This setting can avoid the staff from performing high-altitude operations, thereby reducing the probability of personal safety accidents.

[0051] In addition, the second fixing seat 3 further includes a fixed end guide pulley 33, and the fixed end guide pulley 33 is installed on the second main body 31. Specifically, please refer to Figure 2 , at least one guide pulley is installed at the top wall of the second installation space as the fixed end guide pulley 33. When installing the sling 5, the other end of the sling 5 is tied with a traction rope, and one end of the traction rope bypasses the fixed end guide pulley 33 and extends to the ground. The staff pulls the traction rope manually or by a winch, so as to pull the other end of the sling 5 into the second installation space. This setting can avoid the staff from performing high-altitude operations, thereby reducing the probability of personal safety accidents.

[0052] Please refer to Figure 1 With Figure 2, in order to facilitate the installation of the two ends of the sling 5 into the first installation space and the second installation space respectively, the sling 5 includes a flat belt 51 for contacting the blade and sling rings 52 arranged at both ends of the flat belt 51 in the length direction. The sling rings 52 at both ends of the flat belt 51 are respectively arranged in the first installation space and the second installation space.

[0053] To improve the stability of the blade during transportation, an anti-slip rubber layer is provided on the side of the flat belt 51 that contacts the blade, thereby increasing the friction between the flat belt 51 and the blade and reducing the risk of blade sliding.

[0054] In an embodiment of the present invention, an arc-shaped through hole 4411 is provided on the adjusting main body 441. The adjusting main body 441 is connected to the rotating group arm 42 through the arc-shaped through hole 4411, so that the adjusting main body 441 can rotate relative to the rotating group arm 42. Please refer to Figure 3 , an arc-shaped through hole 4411 with a certain length is provided on the adjusting main body 441, so that the adjusting main body 441 can rotate on the top plane of the rotating group arm 42. This setting is used to adjust the rotation angle of the hanging plate main body 431 connected to the adjusting main body 441, so that the hanging plate main body 431 can be accurately connected to the first fixing seat 2; at the same time, by adjusting the rotation angle of the adjusting main body 441, the adjusting main body 441 and the hanging plate main body 431 can be accurately connected. In this embodiment, the number of arc-shaped through holes 4411 is at least two, and the arc-shaped through holes 4411 are symmetrically arranged to avoid excessive local stress on the adjusting main body 441 causing the structure to yield.

[0055] In an embodiment of the present invention, the self-rotating frame 4 further includes a first telescopic cylinder 45 and a second telescopic cylinder 46. The rotating group arm 42 includes a rotating arm 421 and a cross arm 422. The cross arm 422 is rotatably connected to the support arm 41. One end of the first telescopic cylinder 45 is installed on the support arm 41, and the other end is installed on the cross arm 422. The rotation angle between the cross arm 422 and the support arm 41 is controlled by the first telescopic cylinder 45; the rotating arm 421 is rotatably connected to the cross arm 422. One end of the second telescopic cylinder 46 is installed on the rotating arm 421, and the other end is installed on the cross arm 422. The rotation angle between the rotating arm 421 and the cross arm 422 is controlled by the second telescopic cylinder 46. For details, please refer to Figure 4, the support arm 41 is fixed relative to the end beam 12. A pin shaft is provided between the support arm 41 and the cross arm 422, enabling the cross arm 422 to rotate around the support arm 41. At the same time, a first telescopic cylinder 45 is provided between the two, and the first telescopic cylinder 45 is used to adjust the rotation angle of the cross arm 422. On the basis that the rotation angle of the cross arm 422 can be adjusted, the rotating arm 421 is connected to the cross arm 422 through a pin shaft, enabling the rotating arm 421 to rotate around the cross arm 422. At the same time, a second telescopic cylinder 46 is provided between the rotating arm 421 and the cross arm 422, which is used to adjust the rotation angle between the rotating arm 421 and the cross arm 422. The first telescopic cylinder 45 and the second telescopic cylinder 46 include one of an electric cylinder and a hydraulic cylinder.

[0056] Further, in an embodiment of the present invention, the support arm 41 includes a support upper arm 411, a support lower arm 412, and a support end pin shaft 413. The support lower arm 412 is slidably installed on the outside of the support upper arm 411. The support upper arm 411 and the support lower arm 412 are connected by the support end pin shaft 413, and the support upper arm 411 is fixedly connected to the second fixed seat 3; the rotating arm 421 includes a rotating upper arm 4211, a rotating lower arm 4212, and a rotating end pin shaft 4213. The rotating lower arm 4212 is slidably installed on the outside of the rotating upper arm 4211. The rotating upper arm 4211 and the rotating lower arm 4212 are connected by the rotating end pin shaft 4213, and the rotating upper arm 4211 is connected to the adjusting assembly 44. Please refer to Figure 4 , the sizes and weights of the blades are different, and different types of lifting tools are required. In this embodiment, in order to make the single-blade lifting tool have a wider application range, both the support arm 41 and the rotating arm 421 are set to be height-adjustable structures. Among them, the support arm 41 includes a support upper arm 411 and a support lower arm 412. The support lower arm 412 is integrally sleeved on the outside of the support upper arm 411, and the support lower arm 412 is provided with outer holes with different heights at intervals along its height direction. The support upper arm 411 is provided with inner holes corresponding to the outer holes. In the preparation stage of the blade disassembly and assembly operation, the support upper arm 411 can adjust the length extending out of the support lower arm 412 through an external crane. When the support upper arm 411 extends to an appropriate length, the support end pin shaft 413 is used to pass through the corresponding outer hole and inner hole, so that the support upper arm 411 and the support lower arm 412 are relatively fixed. The rotating arm 421 and the support arm 41 are arranged in parallel in the initial state, and their structures are roughly the same, and their heights are adjusted synchronously correspondingly.

[0057] In an embodiment of the present utility model, the cross arm 422 includes a first cross section arm 4221, a second cross section arm 4222 and a bottom pin shaft 4223. The second cross section arm 4222 is slidably installed on the outside of the first cross section arm 4221, and the first cross section arm 4221 and the second cross section arm 4222 are connected by the bottom pin shaft 4223. The first cross section arm 4221 is connected to the support arm 41, and the second cross section arm 4222 is connected to the rotating arm 421; or, the first cross section arm 4221 is connected to the rotating arm 421, and the second cross section arm 4222 is connected to the support arm 41. Please refer to Figure 4 , in order to further improve the applicability of the single-blade spreader 100, the cross arm 422 is provided with a structure with adjustable length. Among them, the cross arm 422 includes a first cross section arm 4221 and a second cross section arm 4222. The second cross section arm 4222 is arranged on the outside of the first cross section arm 4221. The first cross section arm 4221 can extend or retract into the second cross section arm 4222. A plurality of bottom outer holes are arranged at intervals along the length direction of the second cross section arm 4222 on the outside of the second cross section arm 4222. Corresponding positions on the first cross section arm 4221 are provided with bottom inner holes. During the preparation stage of the blade disassembly and assembly operation, the length of the first cross section arm 4221 extending out of the second cross section arm 4222 can be adjusted by a crane and a trailer. After adjusting to the appropriate length, the bottom pin shaft 4223 is used to pass through the corresponding bottom outer hole and bottom inner hole to relatively fix the first cross section arm 4221 and the second cross section arm 4222. Depending on the actual situation and the different structural forces, the connection positions of the first cross section arm 4221 and the second cross section arm 4222 can be adjusted. Correspondingly, at the connection positions of the end beam 12 with the first fixing seat 2 and the second fixing seat 3, mounting holes for installing the first fixing seat 2 and the second fixing seat 3 are provided, and a plurality of mounting holes are arranged along the length direction of the end beam 12. The first fixing seat 2 and the second fixing seat 3 can be installed in different mounting holes to adjust the horizontal distance between the two, so as to adapt to the adjustment of the length of the cross arm 422.

[0058] In an embodiment, the support end pin shaft 413, the rotating end pin shaft 4213 and the bottom pin shaft 4223 can adopt different types of pin shafts according to different force conditions; however, when the external forces received by each pin shaft are far less than the external forces required for its yield, the support end pin shaft 413, the rotating end pin shaft 4213 and the bottom pin shaft 4223 can adopt the same type of pin shaft.

[0059] In an embodiment of the present utility model, the single-blade sling 100 further includes an image monitor which is installed on the suspension bracket 1. The image monitor includes a monitoring head that faces the rotation frame 4. Specifically, the image monitor includes one of a camera and an infrared camera. By monitoring the position information of the hanging ring 52 during the installation of the sling 5 through the image monitor, the installation position of the hanging ring 52 can be adjusted, the positional relationship between the hanging ring 52 and the second fixing seat 3 or the hanging plate assembly 43 can be judged, and in combination with the remote control first sling release structure 432 and the second sling release structure 32, the accuracy and efficiency of the installation of the sling 5 can be improved. In addition, the image monitor can monitor the rotational position information of the rotating group arm 42 and the position information of the blade entering the gap between the sling 5 and the end beam 12, which is beneficial to obtaining the construction information during the entire construction cycle of the blade disassembly and assembly project.

[0060] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A single blade hanger, characterized in that: include: Hanger (1); A first fixing seat (2), the first fixing seat (2) being fixedly mounted on one end of the hanger (1), the first fixing seat (2) comprising a first main body (21) and a first release structure (22) mounted on the first main body (21); A second fixing seat (3), the second fixing seat (3) being fixedly mounted on the other end of the hanger (1); A self-rotating frame (4), the self-rotating frame (4) comprising a supporting arm (41), a rotating group arm (42), a hanging plate assembly (43) and an adjusting assembly (44), wherein the rotating group arm (42) is rotatably connected to one end of the supporting arm (41); The other end of the support arm (41) is fixedly connected to the second fixed seat (3); one end of the rotating group arm (42) away from the support arm (41) is connected to the adjustment component (44); the adjustment component (44) comprises an adjustment body (441) and a second release structure (442); one end of the hanging plate component (43) is hinged to the adjustment body (441) via the second release structure (442); and the other end of the hanging plate component (43) is hinged to the first body (21) via the first release structure (22); A sling (5), one end of which is mounted on the second fixing seat (3), and the other end of which is mounted on the hanging plate assembly (43).

2. The single blade spreader according to claim 1, characterized in that: The hanging plate assembly (43) comprises a hanging plate body (431) and a first telescopic shaft movably arranged in the hanging plate body (431), the hanging plate body (431) is provided with a first installation space, and the first telescopic shaft comprises a first extended position and a first retracted position; When the first telescopic shaft is in the first extended position, the first telescopic shaft is accommodated in the first installation space and passes through one end of the sling; when the first telescopic shaft is in the first retracted position, the first telescopic shaft escapes from the first installation space.

3. The single blade spreader according to claim 2, characterized in that: The second fixing seat (3) comprises a second main body (31) and a second telescopic shaft movably arranged in the second main body (31), the second main body (31) is provided with a second installation space, and the second telescopic shaft comprises a second extended position and a second retracted position; When the second telescopic shaft is in the second extended position, the second telescopic shaft is accommodated in the second installation space and passes through the other end of the sling; when the second telescopic shaft is in the second retracted position, the second telescopic shaft escapes from the second installation space.

4. The single-blade hanger according to claim 2, characterized in that: The hanging plate assembly (43) further comprises a rotating end guide wheel (433), and the rotating end guide wheel (433) is mounted on the hanging plate body (431).

5. The single blade spreader according to claim 3, characterized in that: The second fixing seat (3) further comprises a fixing end guide wheel (33), and the fixing end guide wheel (33) is mounted on the second main body (31).

6. The single blade spreader according to claim 1, characterized in that: The adjusting body (441) is provided with an arc-shaped through hole (4411), and the adjusting body (441) is connected to the rotating group arm (42) via the arc-shaped through hole (4411), so that the adjusting body (441) can rotate relative to the rotating group arm (42).

7. The single blade spreader according to claim 1, characterized in that: The self-rotating frame (4) further comprises a first telescopic cylinder (45) and a second telescopic cylinder (46); the rotating arm assembly (42) comprises a rotating arm (421) and a cross arm (422); the cross arm (422) is rotatably connected to the support arm (41); one end of the first telescopic cylinder (45) is mounted on the support arm (41) and the other end is mounted on the cross arm (422); the rotation angle between the cross arm (422) and the support arm (41) is controlled by the first telescopic cylinder (45); The rotating arm (421) is rotatably connected to the cross arm (422); one end of the second telescopic cylinder (46) is installed on the rotating arm (421) and the other end is installed on the cross arm (422); the rotating angle between the rotating arm (421) and the cross arm (422) is controlled by the second telescopic cylinder (46).

8. The single blade spreader according to claim 7, characterized in that: The support arm (41) comprises a support upper arm (411), a support lower arm (412) and a support end pin shaft (413); the support lower arm (412) is slidably mounted on the outer side of the support upper arm (411); the support upper arm (411) and the support lower arm (412) are connected via the support end pin shaft (413); and the support upper arm (411) is fixedly connected to the second fixing seat (3); The rotating arm (421) comprises a rotating upper arm (4211), a rotating lower arm (4212) and a rotating end pin shaft (4213); the rotating lower arm (4212) is slidably mounted on the outer side of the rotating upper arm (4211); the rotating upper arm (4211) and the rotating lower arm (4212) are connected via the rotating end pin shaft (4213); and the rotating upper arm (4211) is connected to the adjusting assembly (44).

9. The single blade spreader according to claim 7, characterized in that: The cross arm (422) comprises a first cross arm (4221), a second cross arm (4222) and a bottom pin shaft (4223); the second cross arm (4222) is slidably mounted on the outside of the first cross arm (4221); the first cross arm (4221) and the second cross arm (4222) are connected via the bottom pin shaft (4223); The first cross-section arm (4221) is connected to the support arm (41), and the second cross-section arm (4222) is connected to the rotating arm (421); or, The first transverse arm (4221) is connected to the rotating arm (421), and the second transverse arm (4222) is connected to the supporting arm (41).

10. The single blade spreader according to any one of claims 1 to 9, characterized in that: The single-blade hanger (100) further comprises an image monitor, which is mounted on the hanger (1); the image monitor comprises a monitoring head, which is arranged toward the self-rotating frame (4).

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