CN111960256A

CN111960256A - Blade hoisting tool

Info

Publication number: CN111960256A
Application number: CN202010869799.3A
Authority: CN
Inventors: 张竹; 方晶; 胡海红; 黄可唯; 黄建伟; 朱钰
Original assignee: CHENGDU SHIWEI TECHNOLOGY CO LTD; Guangdong Jinfeng Technology Co ltd
Current assignee: CHENGDU SHIWEI TECHNOLOGY CO LTD; Guangdong Jinfeng Technology Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-20
Anticipated expiration: 2040-08-26
Also published as: CN111960256B

Abstract

The utility model provides a blade hoist and mount frock, including blade anchor clamps and every single move rotary mechanism, every single move rotary mechanism includes: a support frame; the rotating shaft is rotatably arranged on the supporting frame, and a first end of the rotating shaft is fixedly connected with the blade clamp; the rotating disc is fixedly connected to the second end of the rotating shaft, at least two connecting points are arranged on the rotating disc, and the at least two connecting points are arranged along the circumferential direction of the rotating disc; and a driving unit including at least two driving members, each of the at least two driving members being hinged to one of the at least two connection points to drive the turntable to rotate, and the at least two driving members being capable of being disconnected from the connected connection point and then connected to one of the other connection points.

Description

Blade hoisting tool

Technical Field

The invention relates to the technical field of wind power generation, in particular to a blade hoisting tool.

Background

With the increasing single-machine capacity of wind generating sets, the size of blades of the wind generating sets is gradually increased, for example, the length of the blades of offshore wind generating sets exceeds 90 meters, and the weight of the blades exceeds 35 tons.

The hub needs to be rotated by means of the barring structure in the traditional blade installation process, so that a variable pitch bearing of the hub can correspond to the position of a blade flange, along with the increase of the blade, the load required to be borne by the traditional barring structure is also larger and larger, and therefore the end cover structure (connected with the barring) of the generator deforms in the barring process, and normal operation of a unit is affected.

Because blade length is overlength, trefoil installation is because the restriction of installation ship, it has very big risk to stand up, for example in the installation of above-mentioned blade, the single blade hoist and mount frock of use can take the blade to carry out small-angle rotation, for example rotatory 30, consequently need the loop wheel machine to take single blade hoist and mount frock barring to carry out the rotation of large angle, but this kind of mode has very big potential safety hazard, for example in the loop wheel machine takes single blade hoist and mount frock barring in-process, the influence of lifting hook in-process acceleration is put down, probably lead to the lifting hook to collide with the blade, perhaps because the loop wheel machine maloperation produces extra pulling force and makes single blade hoist and mount frock produce extra pulling force to the blade and make the blade slide out from the grip opening.

Disclosure of Invention

It is an object of the present invention to provide a pitch and turn mechanism that can grip the blades for rotation together without the need for additional turning gear during blade installation.

The invention provides a blade hoisting tool, which comprises a blade clamp and a pitching rotating mechanism, wherein the pitching rotating mechanism comprises: a support frame; the rotating shaft is rotatably arranged on the supporting frame, and the first end of the rotating shaft is fixedly connected with the blade clamp; the rotating disc is fixedly connected to the second end of the rotating shaft, at least two connecting points are arranged on the rotating disc, and the at least two connecting points are arranged along the circumferential direction of the rotating disc; and a driving unit including at least two driving members, each of the at least two driving members being hinged with each of the at least two connection points to drive the turntable to rotate, and the at least two driving members being capable of being disconnected from the connected connection point and then connected to one of the other connection points.

According to an aspect of the present invention, the connection point may be a first pin hole formed on the turntable, and one end of the driving unit may be provided with a connection pin that can be inserted into or withdrawn from the first pin hole, and the number of the first pin holes may be equal to or greater than the number of the driving members.

According to an aspect of the present invention, the at least two driving members may be linear telescopic driving members, and the linear telescopic driving members may include: a cylinder mounted to the support frame; and one end of the piston rod is arranged in the cylinder body, and the other end of the piston rod is hinged with the connecting pin.

According to an aspect of the present invention, the other end of the piston rod may be formed with a second pin hole into which the connection pin is inserted, and the pitch rotation mechanism may further include a control unit capable of controlling the connection pin to be inserted into or withdrawn from the first and second pin holes.

According to an aspect of the present invention, the driving mechanism may be a telescopic cylinder, and the driving unit may include at least two telescopic cylinders spaced around the turntable, and in a case where a moment arm of a rotational force applied to the turntable by one of the at least two telescopic cylinders is zero, the moment arm of the rotational force applied to the turntable by at least one of the remaining telescopic cylinders is not zero.

According to an aspect of the present invention, an included angle between at least two telescopic cylinders with respect to the rotation axis may be greater than 0 degree and less than 180 degrees.

According to an aspect of the present invention, the number of the at least two telescopic cylinders may be four, and the number of the at least two connection points may be 8 and are uniformly arranged on the outer circumferential edge of the turntable along the circumferential direction of the turntable.

According to an aspect of the invention, the pitch rotation mechanism may further comprise a reset assembly for resetting the at least two drive members to align with another connection point after the turntable is rotated to the predetermined position and the at least two drive members are disengaged from the connected connection point.

According to an aspect of the present invention, the pitch rotation mechanism may further include a locking assembly for restricting rotation of the turntable.

According to an aspect of the present invention, a locking groove may be provided on the support frame, and the locking assembly may include: and a locking pin, which may be provided with a locking pin hole through which the locking pin passes, and which has a locking position in which the locking pin passes through the locking pin hole and is inserted into the locking groove on the support frame, thereby restricting rotation of the turntable, and an unlocking position in which the locking pin is separated from the support frame.

According to an aspect of the invention, the locking pin hole may be located radially outward of the pin hole.

According to an aspect of the present invention, the turntable may include a first disk portion and a second disk portion coaxially disposed, the first disk portion having a diameter smaller than a diameter of the second disk portion, a pin hole being formed on the first disk portion, and a locking pin hole being formed on the second disk portion and being located radially outside the first disk portion.

According to an aspect of the invention, the second end of the rotation shaft may be connected to the center of the turntable, so that the turntable can rotate around and with the rotation shaft.

According to the blade hoisting tool disclosed by the embodiment of the disclosure, through the arrangement of the pitching rotating mechanism, the function that the blade hoisting tool drives the blade to rotate in the air can be realized, and when the blade hoisting tool clamps the blade to rotate in the air, the blade can rotate at any angle within a large range (for example, 300 degrees) at a preset angle so as to be in butt joint with a variable pitch bearing, and an additional turning tool is not needed or an external crane drives the blade hoisting tool and the blade to lift/fall to rotate an impeller so that the variable pitch bearing reaches a specific position to be in butt joint with the blade, so that the installation process of the blade is simplified, the complexity of blade installation is reduced, and the installation efficiency of a single blade is improved.

Drawings

The above and/or other objects and advantages of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a structural diagram of a blade lifting tool according to an exemplary embodiment of the present invention.

Fig. 2 is a side view of the pitch rotation mechanism of fig. 1.

Fig. 3 is a rear perspective view of the pitch rotation mechanism of fig. 1.

Fig. 4 is an exploded view of the pitch rotation mechanism of fig. 1.

Fig. 5 to 7 show schematic views of the connection of the drive member to different connection points on the turntable.

Fig. 8 is a schematic view of the blade hoisting tool according to the exemplary embodiment of the present invention when hoisting a single blade.

Fig. 9 is a schematic view of the blade hoisting tool according to the exemplary embodiment of the present invention when hoisting three blades.

The reference numbers illustrate:

1: a blade; 100: a blade clamp; 110: a blade tip clamping mechanism; 120: a main beam; 130: a blade root clamping structure; 200: a hanger; 210: a boom; 220: the hoisting point is connected with the beam; 230: lifting lugs; 300: a telescoping member; 400: a counterweight unit; 500: a pitch rotation mechanism; 510: a support frame; 520: a rotating shaft; 530: a turntable; 531: a first pin hole; 532: a locking pin hole; 533: a first disk-shaped portion; 534: a second disk-shaped portion; 540: a connecting pin; 550: a drive unit; 551: a first drive member; 552: a second drive member; 553: a third drive member; 554: a fourth drive member; 5511: a piston rod; 5512: a cylinder body; 5513: a second pin hole; 560: a locking pin; 570: a bearing assembly; 571: a bearing; 572. 573, 574: and (4) end covers.

Detailed Description

Hereinafter, a blade hoisting tool according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals refer to like parts throughout the drawings.

It will be understood that the use of the terms first, second, etc. may not denote any order or importance, but rather the terms first, second, etc. may be used to distinguish one element from another.

In addition, for convenience of description, the terms "left", "right", "up" and "down" used hereinafter correspond to the left, right, up and down directions of the drawings themselves, but do not limit the structure of the assembly of the present invention.

It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

Fig. 1 is a structural diagram of a blade lifting tool according to an exemplary embodiment of the present invention. Fig. 2 is a side view of the pitch rotation mechanism of fig. 1. Fig. 3 is a rear perspective view of the pitch rotation mechanism of fig. 1. Fig. 4 is an exploded view of the pitch rotation mechanism of fig. 1. Fig. 5 to 7 show schematic views of the connection of the drive member to different connection points on the turntable. Fig. 8 is a schematic view of the blade hoisting tool according to the exemplary embodiment of the present invention when hoisting a single blade. Fig. 9 is a schematic view of the blade hoisting tool according to the exemplary embodiment of the present invention when hoisting three blades.

Referring to fig. 1 to 4, a blade handling tool according to an exemplary embodiment of the present invention may include a blade clamp 100 and a pitch rotation mechanism 500.

The blade clamp 100 is used for clamping a blade 1 (see fig. 8), and the blade clamp 100 may include a spar 120 and two

blade clamping mechanisms

110 and 130 connected to both ends of the spar 120, the two

blade clamping mechanisms

110 and 130 being used for clamping a tip portion and a root portion of the blade, and thus may also be referred to as a tip clamping mechanism 110 and a root clamping mechanism 130, respectively. According to the blade hoisting tool provided by the exemplary embodiment of the invention, the blade clamp 100 can be driven by the pitching rotation mechanism 500 to rotate at a large angle, for example, 300 degrees, and can rotate at any angle, so that the blade 1 can be carried to perform pitching operation, the requirement of angle adjustment during installation of the blade 1 is met, a hub does not need to be rotated in the blade installation process, and the blade installation process is simplified.

Hereinafter, a specific structure of the pitch rotating mechanism 500 will be described in detail with reference to fig. 2 to 7.

Pitch rotation mechanism 500 may be used to adjust the pitch angle or pitch angle of blade 1. As shown in fig. 2 to 4, the pitch rotating mechanism 500 may include a support frame 510, a rotation shaft 520, a turntable 530, and a driving unit 550.

The rotation shaft 520 is rotatably installed on the support frame 510, and a first end of the rotation shaft 520 is fixedly connected to the blade clamp 100, for example, to the main beam 120, so as to rotate the blade clamp 100 together. The rotating plate 530 is fixedly connected to the second end of the rotating shaft 520, and at least two connection points are provided on the rotating plate 530 and arranged along the circumferential direction of the rotating plate 530. The driving unit 550 includes at least two driving members 551,552,553, and 554 mounted on the support frame 510, and each of the at least two driving members 551,552,553, and 554 is hinged to each of at least two connection points to drive the rotation of the rotation disk 530, thereby transmitting power through the rotation disk 530 such that the blade clamp 100 is rotated by the rotation shaft 520. After the driving dial 530 is rotated by a predetermined angle, at least two driving members 551,552,553, and 554 can be disconnected from the connected connection points and then connected to one of the other connection points.

According to the blade hoisting tool provided by the exemplary embodiment of the invention, the pitch rotating mechanism 500 drives the turntable 530 to surround and drive the rotating shaft 520 to rotate through the driving unit 550, and drives the blade clamp 100 to rotate together, so that the blade 1 clamped by the blade clamp 100 rotates, and the pitch angle of the blade 1 is changed in a large range in the process of hoisting the blade 1. In the blade installation process, the hub does not need to be rotated, and the blade 1 is driven to rotate to a required angle only through the pitching rotating mechanism 500, so that the blade can be connected with the pitch bearing on the corresponding position of the hub, and the installation process of the blade 1 is simplified.

Next, the support frame 510, the rotation shaft 520, the turntable 530, and the driving unit 550 of the pitch rotation mechanism 500 will be described in detail.

Specifically, the support frame 510 may be hooked to and moved with an external large lifting tool by a hook.

The support frame 510 may be fixedly connected to a lifting point connecting beam 220 (to be described in detail later), for example, the support frame 510 may be located below the lifting point connecting beam 220.

The rotation shaft 520 is rotatably provided in the support frame 510, and a first end of the rotation shaft 520 protrudes from one side of the support frame 510 and a second end of the rotation shaft 520 protrudes from the other side of the support frame 510.

A first end of the rotation shaft 520 protruding from one side of the support frame 510 may be used to be connected to the blade fixture 100, a second end of the rotation shaft 520 protruding from the other side of the support frame 510 may be used to be connected to the turntable 530, and the turntable 530 may be used to be connected to the driving unit 550 so as to rotate with the turntable 530 by the driving unit 550.

The surface of the first end of the rotating shaft 520 may be formed with cylindrical teeth, and accordingly, the blade jig 100 is provided with mounting grooves matched with the cylindrical teeth, and the first end of the rotating shaft 520 is received in the mounting grooves of the blade jig 100 through the cylindrical teeth, thereby being coupled to and moving synchronously with the blade jig 100.

The surface of the second end of the rotating shaft 520 may also be formed with cylindrical teeth, and the turntable 530 is provided with mounting grooves to be matched with the cylindrical teeth. The second end of the rotating shaft 520 is received in the mounting groove of the rotational plate 530 through the cylindrical teeth, thereby being fixedly coupled to the rotational plate 530 and moving in synchronization.

In an embodiment, the second end of the rotation shaft 520 is coupled to the center of the rotation plate 530, a mounting through hole through which the second end of the rotation shaft 520 passes is formed in the center of the rotation plate 530, and the mounting groove is formed on an inner sidewall of the mounting through hole, so that the rotation plate 530 can rotate about its central axis.

The rotational shaft 520 may be rotatably mounted on the support frame 510 by a bearing assembly 570. The support frame 510 is formed with a through-hole, and the bearing assembly 570 includes bearings 571 symmetrically installed at both sides of the through-hole and bearing end caps 572, 573, and 574 installed at ends of the bearings 571. The rotation shaft 520 is engaged with an inner race of the bearing 571 so as to be rotatable with respect to the support frame 510 while being supported by the support frame 510.

At least two connection points are provided on the rotating disc 530, and the at least two connection points are arranged along the circumference of the rotating disc 530. In an embodiment, the turntable 530 is provided with 8 connection points uniformly arranged along the circumference of the turntable 530. The present invention is not limited thereto and the number of connection points on the turntable 530 may be determined according to the number of driving members included in the driving unit 550 connected thereto, and may be greater than or equal to the number of driving members. For example, when there are 2 drive members, the number of connection points on the turntable 530 may be at least 2, preferably 4, when there are 4 drive members, the number of connection points on the turntable 530 may be at least 4, preferably 8, and so on.

The driving unit 550 includes at least two driving members 551,552,553, and 554, each of which is hinged to one connection point on the turntable 530 to drive the turntable 530 to rotate.

The connection between the drive member and the connection point on the turntable 530 may be controlled by the control unit. In other words, the control unit may control the driving members to be disconnected from the connected connection point and then connected to one of the other connection points after the driving dial 530 is rotated to a predetermined position, so that at least two driving members may relay to push the dial 530.

The drive members 551,552,553, and 554 may be linear telescopic drive members. The linear telescopic drive member may include a piston rod 5511 and a cylinder 5512. One end of the piston rod 5511 is disposed in the cylinder body 5512, and is connected to a piston in the cylinder body 5512; the other end (telescopic end) of the piston rod 5511 is hinged to the connection point. The cylinder 5512 is mounted to the support frame 510 to drive the piston rod 5511 to make a telescopic movement and to drive the rotation of the rotation plate 530 by the telescopic movement, but the present invention is not limited thereto and the cylinder 5512 may be mounted to other fixed positions than the support frame 510. When the extending stroke of the telescopic end reaches a preset position, the control unit controls the telescopic end to be separated from the corresponding connection point and controls the telescopic end to retract and be connected with the close connection point.

Here, the extension stroke of the telescopic end reaching the predetermined position may mean: the driving members 551,552,553, and 554 cannot continue to apply a rotational force to the rotational disk 530 through the telescopic motion to rotate the rotational disk 530 in a predetermined direction (e.g., clockwise or counterclockwise), for example, a position where the extension stroke of the telescopic end reaches a maximum or the extension stroke reaches a minimum, or adjacent driving members interfere with each other.

The driving component can be a telescopic oil cylinder, and the piston rod is driven by hydraulic oil, so that linear telescopic driving is realized. However, the present invention is not limited thereto, and the driving member may be another driving element capable of driving the rotation of the rotation disc 530 to implement linear telescopic driving, for example, an air cylinder or the like. In addition, the driving member may also be a non-linear telescopic driving element capable of driving the rotation of the turntable 530.

The telescopic end of the piston rod 5511 may be coupled to a coupling point of the rotational plate 530 through a coupling pin 540, a first pin hole 531 into which the coupling pin 540 is inserted is formed at the coupling point of the rotational plate 530, a second pin hole 5513 into which the coupling pin 540 is inserted is also formed at the telescopic end of the piston rod 5511, and the control unit may control the coupling pin 540 to be simultaneously inserted into the first pin hole 531 of the rotational plate 530 and the second pin hole 5513 of the piston rod 5511 or to be withdrawn from the first pin hole 531 and the second pin hole 5513. Preferably, the coupling pin 540 is parallel to the rotation shaft 520 in a state where the coupling pin 540 is inserted into the first pin hole 531 of the dial 530 and the second pin hole 5513 of the piston rod 5511.

According to the stroke of the telescopic oil cylinder, the rotation angle range of the turntable 530 can be reasonably determined, and further the rotation angle range of the blade clamp 100 can be determined. The number of the telescopic oil cylinders can be one or more than two. When the rotation angle of the turntable 530 does not exceed 180 degrees, a single telescopic oil cylinder can meet the driving requirement. However, when the rotation angle of the turntable 530 is greater than 180 degrees, for example, when 360 degrees of rotation is required, when a single telescopic cylinder rotates along with the rotation of the turntable 530, a state occurs in which the movement direction of the piston rod 5511 coincides with the radial direction of the turntable 530, and at this time, the arm of force of the telescopic cylinder with respect to the rotation shaft 520 is zero, and thus, the telescopic cylinder is at a dead point position and cannot be further telescopic.

Therefore, in order to make the range of the pitch angle of the blade 1 larger on the one hand and also make the installation position of the telescopic cylinder more unlimited on the other hand, as a preferred embodiment, the driving unit 550 may include at least two telescopic cylinders arranged at intervals around the turntable 530. One end of the telescopic cylinder is connected to the outer circumferential edge of the turntable 530, and under the condition that the force arm of the rotating force applied to the turntable 530 by one of the telescopic cylinders is zero, the force arm of the rotating force applied to the turntable 530 by at least one of the other telescopic cylinders is not zero, so that the turntable 530 can be pushed to continue to rotate, and the telescopic cylinder can smoothly cross over the dead point position.

Preferably, one end of the telescopic cylinder is connected to the outer circumference of the turntable 530, and the distance between the connection point and the rotation shaft 520 is as large as possible, thereby maximizing the moment arm of the rotational force applied to the rotation shaft 520 by the telescopic cylinder. In addition, by adjusting the installation positions of the two telescopic cylinders, the force arm of the rotating force applied to the rotating shaft 530 by at least one of the two telescopic cylinders is not zero no matter in the initial state or in the rotating process, so that the telescopic cylinders are prevented from being locked. In other words, when the first telescopic cylinder rotates along with the rotation of the turntable 530 such that the moving direction of the piston rod 5511 coincides with the radial direction of the turntable 530, the moment arm of the first telescopic cylinder with respect to the rotation shaft 520 is zero, and thus the first telescopic cylinder is located at the dead point position and cannot be further telescopic. Due to the arrangement of the two telescopic oil cylinders, when the first telescopic oil cylinder is positioned at the dead point position, the force arm of the rotating force applied to the rotating disc 530 by the second telescopic oil cylinder is not zero, so that the rotating disc 530 can be pushed to continue rotating, and the first telescopic oil cylinder can smoothly cross the dead point position. However, in the embodiment of the present invention, the number of the telescopic cylinders is not limited to two, and may be more.

In an embodiment, an included angle between at least two telescopic cylinders is greater than 0 degree and less than 180 degrees with respect to the rotation axis 520. When the extending directions of the two telescopic cylinders coincide with the radius of the turntable 530, the included angle formed by the two telescopic cylinders with respect to the rotating shaft 520 is greater than 0 degree and less than 180 degrees. In other words, the dead point positions of the two telescopic cylinders are not on the same diameter of the turntable 530, so that the two telescopic cylinders are prevented from being simultaneously in the dead point positions, that is, the force arms of the rotating forces applied to the turntable 530 by the two telescopic cylinders are prevented from being simultaneously zero. Through the crossed arrangement of the two telescopic oil cylinders, the two oil cylinders can be prevented from being locked at the same time.

The control unit may control at least two driving members 551,552,553, and 554 to cooperatively operate, thereby pushing the turn plate 530 to rotate. For example, with one portion of the drive member extended and another portion of the drive member retracted, a force is applied to the dial 530 that moves the dial 530 in one direction, i.e., a rotational force is applied to the dial 530 in the same direction, which together drive the dial 530 to rotate in one direction (e.g., clockwise).

Specifically, the at least two drive members may be divided into a first set of drive members and a second set of drive members, and the control unit may control the piston rods 5511 of the first set of drive members to extend to provide a pushing force to the turntable 530, and simultaneously control the piston rods 5511 of the second set of drive members to retract to provide a pulling force to the turntable 530, such that the turntable 530 rotates in a desired direction under the cooperation of the pushing force and the pulling force.

However, the present invention is not limited thereto, and at least two driving members may also be synchronously retractable, as long as when the extending stroke reaches the maximum, the driving members are connected to different connection points of the rotary table 530 by switching the connection pins 540, so that the driving members can be retracted and extended reciprocally, and the rotary table 530 is pushed to rotate in relay, thereby driving the blade clamp 100 to rotate together with the blade 1.

In addition, since the telescopic end of the driving member is hinged to the rotation plate 530, the driving member can rotate with itself while being extended to push the rotation plate 530 to rotate, and in order to align the driving member with another connection point on the rotation plate 530 after being separated from the previous connection point, the pitch and rotation mechanism 500 may further include a restoring member, which may be a spring, having one end connected to the support frame 510 and the other end connected to the cylinder 5512. After the drive member is disconnected from the connection point on the dial 530, the drive member returns to the initial position under the action of the spring to align with the next connection point.

In an embodiment, as shown in fig. 5, the number of the driving members 551,552,553, and 554 is four, that is, the first driving member 551, the second driving member 552, the third driving member 553, and the fourth driving member 554. The number of the connection points on the rotating disk 530 is 8 and is uniformly arranged along the circumference of the rotating disk 530.

The first, second, third, and fourth driving members 551,552,553, and 554 may be spaced apart about the rotation axis 520 on the same plane perpendicular to the rotation axis 520 and symmetrical to each other, and connected to 4 connection points spaced apart from each other on the turntable 530 by four connection pins 540, respectively. The included angle between the first drive member 551, the second drive member 552, the third drive member 553, and the fourth drive member 554, as viewed in the axial direction of the rotary shaft 520, may be any angle between more than 0 degrees and less than 180 degrees. The first and

third drive members

551, 553 may be parallel to each other at a specific position during the telescoping process, and similarly, the second and

fourth drive members

552, 554 may be parallel to each other at a specific position during the telescoping process.

Fig. 5 to 7 show schematically the connection of four drive members 551,552,553 and 554 to different connection points on the turntable 530.

Fig. 5 shows an initial state in which four driving members 551,552,553, and 554 are connected to the turntable 530. When it is necessary to push the rotation of the turntable 530 to adjust the pitch angle of the adjustment blade, the driving unit 550 drives the blade holder 100 to rotate to a state of a predetermined pitch angle, at which time, as shown in fig. 6, the turntable 530 rotates by a predetermined angle with respect to the initial state, the extension strokes of the first driving member 551 and the third driving member 553 reach the maximum, and the rotation of the turntable 530 cannot be continuously pushed.

When it is necessary to continue to push the rotation of the rotation plate 530, it is possible to control the two connection pins 540 at the first and

third driving members

551 and 553 to be withdrawn and to retract the first and

third driving members

551 and 553 to the adjacent connection points by the control unit, and then to control the connection pins 540 to be reinserted such that the first and

third driving members

551 and 553 are connected to the adjacent connection points, as shown in fig. 7. After the first and

third driving members

551 and 553 are connected to the corresponding connection points, the control unit may control the four driving members 551 to continue to push the rotation of the rotation disc 530 until the protruding stroke of at least one of the driving members reaches a maximum or a minimum so that a pushing or pulling force for rotating the rotation disc 530 in a desired direction cannot be continuously applied. For example, the extension stroke of second drive member 552 and fourth drive member 554 is maximized without continuing to rotate carousel 530.

At this time, if it is necessary to rotate the blade 1 by a larger angle, the control unit may control the connecting pin 540 at the second driving member 552 and the fourth driving member 554 to be pulled out and to retract the second driving member 552 and the fourth driving member 554 to an adjacent connecting point, and then control the connecting pin 540 to be reinserted again so that the second driving member 552 and the fourth driving member 554 are connected to the adjacent connecting point, thereby continuously pushing the turntable 530 to rotate.

Repeating the above steps, the turntable 530 can be pushed to rotate by the reciprocating extension and retraction of the four driving members 551,552,553, and 554, so that the blade clamp 100 is driven by the rotating shaft 520 to rotate by the power transmitted by the turntable 530, and the pitch angle of the blade 1 can be adjusted.

In the above example, the condition that the telescopic stroke of the telescopic cylinder reaches the maximum or the minimum is taken as the condition for replacing the connection point, and the condition that the telescopic stroke of the telescopic cylinder reaches the maximum or the minimum also includes the condition that the piston rods of the two telescopic cylinders interfere with each other and cannot be extended and retracted continuously.

To prevent additional eccentric torque due to uneven blade grip center of gravity during switching of the connection between the drive member and the connection point of the turntable 530, the pitch rotation mechanism 500 may further include a locking assembly for limiting rotation of the turntable 530.

The locking assembly may include a locking pin 560, a locking pin hole 532 through which the locking pin 560 passes is provided on the rotational plate 530, and a locking groove is provided on the support frame 510. The locking pin 560 has a locking position in which the locking pin 560 passes through the locking pin hole 532 and is inserted into the locking groove on the support frame 510, thereby restricting the rotation of the dial 530, and an unlocking position in which the locking pin 560 is separated from the support frame 510.

For example, whenever the connection pin 540 is pulled out from the driving member and the turntable 530, the control unit may control the locking pin 560 to be inserted into the locking pin hole 532, so that the turntable 530 is mechanically locked from rotating, thereby ensuring stability in the process of switching the driving member to the turntable. Of course, after the connection of the driving member with the corresponding connection point on the turntable 530 is completed, it is necessary to control the pulling out of the locking pin 560 so that the driving member can push the turntable 530 to rotate.

On the dial 530, the locking pin hole 532 is located radially outward of the pin hole 531. In order to avoid interference of the locking pin 560 with the driving member, alternatively, the dial 530 may be designed to include a first disk portion 533 and a second disk portion 534 coaxially disposed, the pin hole 531 is formed on the first disk portion 533, and the locking pin hole 532 is formed on the second disk portion 534, the diameter of the first disk portion 533 being smaller than that of the second disk portion 534, so that a portion of the second disk portion 534 where the locking pin hole 532 is mounted is exposed by the first disk portion 533, in other words, the locking pin hole 532 is disposed at a portion of the second disk portion 534 not covered by the first disk portion 533, so that the locking pin hole 532 is located radially outside of the first disk portion 533. The first disk portion 533 and the second disk portion 534 may overlap each other, and the first disk portion 533 has a thickness such that the driving member does not collide with the locking pin 560. But the present invention is not limited thereto, and the first disk portion 533 may be spaced apart from the second disk portion 534 by a predetermined distance so that the driving member does not interfere with the locking pin 560.

In addition, the blade lifting tool according to an exemplary embodiment of the present invention may further include a hanger 200, a telescopic member 300, and a weight unit 400. The hanger 200 may include a boom 210, a hanging point connection beam 220, and a lifting lug 230, and the pitch rotation mechanism 500 may be disposed below the hanging point connection beam 220. The lifting lug 230 is connected to a hook of a crane, the boom 210 may be connected to one end of the telescopic member 300 to drive the boom 210 to move relative to the lifting point connection beam 220 by the expansion and contraction of the telescopic member 300, and the other end of the telescopic member 300 is installed on the counterweight unit 400, so that the position of the center of gravity of the blade lifting device may be adjusted.

Note that the pitch angle of the blade 1 referred to in the present application means an inclination angle of the longitudinal direction of the blade 1 with respect to the horizontal direction. As shown in fig. 9, when the first blade 1 at the upper right corner is hoisted, the included angle between the blade 1 and the horizontal direction is 30 ° in the clockwise direction, that is, the pitch angle of the blade 1 is 30 °; when the second blade at the upper left corner is hoisted, the included angle between the blade and the horizontal direction is 240 degrees along the clockwise direction, namely the pitch angle of the blade 1 is 240 degrees; when hoisting a third blade mounted vertically, the angle between the blade and the horizontal direction is 90 ° in the clockwise direction, i.e. the pitch angle of the blade 1 is 90 °.

According to the blade hoisting tool disclosed by the embodiment of the invention, the pitching angle of the blade can be changed in a large-range manner and at any angle in the process of hoisting the blade, and the turning auxiliary is not needed, so that the installation process of the blade is simplified, the complexity of blade installation is reduced, and the installation efficiency of a single blade is improved.

According to the blade hoisting tool disclosed by the embodiment of the disclosure, the blade hoisting tool is at least suitable for hoisting a single blade of an offshore wind generating set.

The above description is only a preferred embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions (e.g., combinations of features in different embodiments of the present disclosure) that can be easily conceived by a person skilled in the art within the technical scope of the present disclosure should be included in the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a blade hoist and mount frock, its characterized in that includes blade anchor clamps (100) and pitch rotary mechanism (500), pitch rotary mechanism (500) include:

a support frame (510);

a rotating shaft (520) rotatably mounted on the support frame (510), a first end of the rotating shaft (520) being fixedly connected with the blade clamp (100);

a rotating disc (530) fixedly connected to the second end of the rotating shaft (520), wherein at least two connecting points are arranged on the rotating disc (530), and the at least two connecting points are arranged along the circumferential direction of the rotating disc (530); and

a drive unit (550), the drive unit (550) comprising at least two drive members (551,552,553,554), each of the at least two drive members (551,552,553,554) being articulated with each of the at least two connection points to drive the turntable (530) in rotation, and the at least two drive members (551,552,553,554) being capable of being disconnected from the connected connection point and then connected to one of the other connection points.

2. The blade hoisting tool according to claim 1, wherein the connection point is a first pin hole (531) formed on the turntable (530), one end of the driving unit is provided with a connection pin (540), the connection pin (540) can be inserted into the first pin hole (531) or withdrawn from the first pin hole (531), and the number of the first pin holes (531) is greater than or equal to the number of the driving members.

3. The blade lifting tool according to claim 2, wherein the at least two driving members (551,552,553,554) are linear telescopic driving members, the linear telescopic driving members comprising:

a cylinder (5512), the cylinder (5512) mounted to the support frame (510);

a piston rod (5511), one end of the piston rod (5511) is arranged in the cylinder body (5512), and the other end of the piston rod (5511) is hinged with the connecting pin (540).

4. The blade hoisting tool according to claim 3, wherein the other end of the piston rod is formed with a second pin hole (5513) into which the connecting pin (540) is inserted, and the pitch and rotation mechanism (500) further comprises a control unit capable of controlling the connecting pin (540) to be inserted into the first pin hole (531) and the second pin hole (5513) or to be withdrawn from the first pin hole (531) and the second pin hole (5513).

5. The blade hoisting tool according to claim 3, wherein the driving mechanism is a telescopic cylinder, the driving unit (550) comprises at least two telescopic cylinders arranged around the turntable (530) at intervals, and under the condition that the force arm of the rotating force applied to the turntable (520) by one of the at least two telescopic cylinders is zero, the force arm of the rotating force applied to the turntable (520) by at least one of the other telescopic cylinders is not zero.

6. The blade hoisting tool according to claim 5, wherein an included angle between the at least two telescopic oil cylinders is larger than 0 degree and smaller than 180 degrees relative to the rotating shaft (520).

7. The blade hoisting tool according to claim 5, wherein the number of the at least two telescopic cylinders is four, and the number of the at least two connection points is 8 and the at least two connection points are uniformly arranged on the outer circumferential edge of the rotating disc (530) along the circumferential direction of the rotating disc (530).

8. Blade lifting tool according to claim 2, wherein the pitch rotation mechanism (500) further comprises a reset assembly for resetting the at least two drive members (551,552,553,554) to align with another connection point after the turntable (530) has been rotated to a predetermined position and the at least two drive members (551,552,553,554) have been disengaged from the connected connection point.

9. Blade lifting tool according to claim 4, characterized in that the pitch rotation mechanism (500) further comprises a locking assembly for limiting the rotation of the turntable (530).

10. The blade hoisting tool according to claim 9, wherein the support frame (510) is provided with a locking groove, and the locking assembly comprises:

a locking pin (560) provided on the dial (530) with a locking pin hole (532) through which the locking pin (560) passes, the locking pin (560) having a locking position in which the locking pin (560) passes through the locking pin hole (532) and is inserted into the locking groove on the support frame (510) to thereby restrict rotation of the dial (530), and an unlocking position in which the locking pin (560) is separated from the support frame (510).

11. Blade hoisting tool according to claim 10, characterized in that the locking pin hole (532) is located radially outside the pin hole (531).

12. The blade hoisting tool according to claim 10, wherein the rotary table (530) comprises a first disk-shaped portion (533) and a second disk-shaped portion (534) which are coaxially arranged, the diameter of the first disk-shaped portion (533) is smaller than the diameter of the second disk-shaped portion (534), the pin hole (531) is formed in the first disk-shaped portion (533), and the locking pin hole (532) is formed in the second disk-shaped portion (534) and is located radially outside the first disk-shaped portion (533).

13. The blade lifting tool according to claim 1, wherein the second end of the rotating shaft (520) is fixedly connected to the center of the turntable (530) so that the turntable (530) can rotate around the rotating shaft (520) and along with the rotating shaft (520).

14. The blade hoisting tool of claim 8, wherein the return assembly is an extension spring.