Lifting belt switching device of wind power blade lifting appliance

Abstract

The utility model relates to a sling switching device of a wind power blade sling. Comprising a folding arm installed on a main body frame of the lifting appliance, a plurality of pin shaft holes evenly distributed in the length direction of the folding arm are formed in the lower portion of the folding arm, one of the pin shaft holes is selected to be provided with a chain block through a pin shaft, and an unhooking assembly is installed on the chain block; the unhooking assembly comprises a hanging ring installation mechanism installed at the lifting end of the chain block through a pin shaft, a through hole is formed in the hanging ring installation mechanism, two inserting flange sleeves are installed in the through hole, and a gap is reserved between the inner ends of the two inserting flange sleeves and used for containing a hanging ring at the end of a hanging belt. The two ends of the blade lifting belt can be hung, the end of the blade lifting belt can be controllably lifted or lowered, meanwhile, the end of the blade lifting belt can be controllably hooked and unhooked, the transverse position of the lifting belt end relative to the lifting tool can be adjusted, and the blade lifting tool is suitable for lifting blades of different sizes.

Description

Technical Field

[0001] This utility model belongs to the field of wind power facility technology, and in particular relates to a sling adapter for a wind turbine blade lifting device. Background Technology

[0002] In recent years, wind power generation technology has made great strides, and wind turbine generators include onshore and offshore units. Structurally, a wind turbine generator consists of a wind turbine supported by a tower, and the wind turbine has multiple (usually three) blades.

[0003] With the increasing size of wind turbines and blades, the traditional method of overall hoisting, which involves assembling the wind turbine and blades first before hoisting and installing the whole unit, is becoming increasingly difficult. Therefore, the current common practice is to use a modular hoisting method for wind power equipment installation, where the wind turbine is hoisted and installed first, followed by the individual hoisting and installation of the blades. Existing methods for horizontally hoisting wind turbine blades use lifting equipment to move the blades horizontally. To ensure that the blades' posture does not change arbitrarily during hoisting, movement, and installation, the lifting equipment needs to provide stable and reliable fixation. Current technologies generally use two methods for fixing blades: a hoisting strap combined with a holding device, and a support base combined with a holding device.

[0004] Traditional wind turbine blade lifting devices, while capable of suspending blades using slings and clamping devices, have several drawbacks: First, they lack controllable hooking and unhooking capabilities at the ends of the blade slings. Second, while they can suspend both ends of the slings, they cannot controllably raise or lower the ends, requiring them to move synchronously with the main frame of the lifting device. Finally, the lateral position of the blade sling ends is not adjustable, limiting their installation to a fixed position on the main frame, making the spacing between the two ends unadjustable and unsuitable for lifting blades of varying sizes. Therefore, a sling adapter for wind turbine blade lifting devices is urgently needed to address these issues. Utility Model Content

[0005] This invention provides a sling adapter for wind turbine blade lifting devices with a reasonable structural design, addressing technical problems existing in prior art. This invention can suspend both ends of the blade sling and controllably raise or lower the ends of the sling. It also allows for controllable hooking and unhooking of the ends of the sling, and the lateral position of the sling ends relative to the lifting device is adjustable, making it suitable for lifting blades of different sizes.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A sling transfer device for a wind turbine blade lifting tool includes a folding arm installed on the main frame of the lifting tool. Multiple pin holes evenly distributed along the length of the folding arm are provided at the lower part of the folding arm. A hand-operated hoist is installed in one of the pin holes via a pin, and a release assembly is installed on the hand-operated hoist. The release assembly includes a lifting ring mounting mechanism installed via a pin to the lifting end of the hand-operated hoist. A through hole is provided on the lifting ring mounting mechanism, and two plug-in flange sleeves are installed in the through hole. A gap is left between the inner ends of the two plug-in flange sleeves to accommodate the lifting ring at the end of the sling. It also includes a lubrication guide cylinder installed on the lifting ring mounting mechanism and connected to the plug-in flange sleeves. A plug-in / pull-out component passes through the lubrication guide cylinder, and a linear drive component is also included for driving the plug-in / pull-out component to move axially along the lubrication guide cylinder.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a sling transfer device for wind turbine blade lifting equipment. By setting a hook-off assembly, controllable hooking and unhooking operations of the sling end are realized. The operation process is simple. When the piston rod of the linear drive extends to the preset position, it can hook the sling end that passes between the two plug-in flange sleeves. When the piston rod of the linear drive retracts, the sling end is unhooked. The hand-operated hoist can be used to lift or lower the hook-off assembly, which facilitates operation by the staff and also enables the lifting or lowering of the blade sling end. The multiple pin holes allow for the selective installation of the hand-operated hoist, making the lateral position of the sling end relative to the lifting equipment adjustable, suitable for lifting blades of different sizes.

[0008] Preferably, a guide sleeve that is connected to the plug flange sleeve is installed on the lifting ring mounting mechanism, and the guide sleeve and the lubrication guide sleeve are distributed on both sides of the lifting ring mounting mechanism.

[0009] Preferably, a second protective cover is fixedly connected to the outer end of the lubrication guide cylinder, and a cylinder mounting seat is fixedly connected to the outer end of the second protective cover for mounting the linear drive component; a first protective cover is fixedly connected to the outer end of the guide sleeve.

[0010] Preferably, the lower ends of both the first protective cover and the second protective cover are open, a switch plate base is installed at the lower end of the second protective cover and a first limit switch that mates with the tail end of the plug-in component is installed on the switch plate base, and a switch plate base is installed at the lower end of the first protective cover and a second limit switch that mates with the head end of the plug-in component is installed on the switch plate base.

[0011] Preferably, the lifting ring mounting mechanism includes a first seat plate and a second seat plate that are arranged opposite to each other and have the same structure. Both the first seat plate and the second seat plate have through holes at their lower parts. Two plug-in flange sleeves are respectively inserted into the two through holes and connected to the corresponding seat plate flanges. The mechanism also includes a hanging mounting component that is fixedly connected to the first seat plate and the second seat plate and has a pin hole at its outer end. A gap is left between the first seat plate and the second seat plate for the lifting ring of the lifting strap to pass through.

[0012] Preferably, the linear drive is an electric actuator; a cavity is provided at the center of the insert / pull-out component, and a hinge joint is fixedly connected to the inner end of the cavity; the piston rod end of the linear drive is pivotally connected to the hinge joint via a pin.

[0013] Preferably, a hinge shaft is installed at the inner end of the folding arm and pivotally connected to the main frame of the lifting device through the hinge shaft; a locking pin is inserted at the inner end of the folding arm to lock the main frame of the lifting device and the folding arm; a cable support arm is installed at the outer end of the folding arm, and multiple cable reels are installed at the lower end of the cable support arm for threading the operating cable. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the unhooking component in this utility model;

[0016] Figure 3 This is a schematic diagram of the AA cross-sectional structure of the unhooking component in this utility model.

[0017] In the diagram: 1. Hinge shaft; 2. Locking pin; 3. Folding arm; 4. Cable support arm; 5. Cable reel; 6. Operating cable; 7. Unhooking assembly; 7-1. Linear drive component; 7-2. First limit switch; 7-3. Switch plate base; 7-4. Insert flange sleeve; 7-5. Second limit switch; 7-6. First protective cover; 7-7. First seat plate; 7-8. Lubrication guide cylinder; 7-9. Hanging mounting component; 7-10. Second seat plate; 7-11. Second protective cover; 7-12. Cylinder mounting base; 7-13. Insert / pull-out component; 7-14. Hinge joint; 7-15. Guide sleeve; 8. Hand chain hoist; 9. Pin hole. Detailed Implementation

[0018] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0019] Please see Figure 1The wind turbine blade lifting device of this utility model includes a folding arm 3 installed on the main frame of the lifting device. Multiple pin holes 9 are evenly distributed along the length direction at the lower part of the folding arm 3. A hand chain hoist 8 is installed through one of the multiple pin holes 9 via a pin. A hook release component 7 is installed on the hand chain hoist 8.

[0020] like Figure 2 and Figure 3 As shown, the aforementioned unhooking assembly 7 includes a lifting ring mounting mechanism installed on the lifting end of the hand chain hoist 8 via a pin. A through hole is provided in the lifting ring mounting mechanism, and two insert flange sleeves 7-4 are installed within the through hole. A gap is left between the inner ends of the two insert flange sleeves 7-4 to accommodate the lifting ring at the end of the sling. Furthermore, the insert flange sleeves 7-4 are made of wear-resistant material. The lifting ring mounting mechanism includes a first set of seat plates 7-7 and a second set of seat plates 7-10 that are arranged opposite each other and have identical structures. Through holes are provided at the lower parts of both the first set of seat plates 7-7 and the second set of seat plates 7-10. The two insert flange sleeves 7-4 are respectively inserted into the two through holes and connected to the corresponding seat plate flanges. It also includes a hanging mounting component 7-9 fixedly connected to the first set of seat plates 7-7 and the second set of seat plates 7-10, with a pin hole at the outer end. A gap is left between the first set of seat plates 7-7 and the second set of seat plates 7-10 for the lifting ring of the sling to pass through.

[0021] The unhooking assembly 7 also includes a lubrication guide cylinder 7-8 mounted on the lifting ring mounting mechanism and communicating with the plug-in flange sleeve 7-4. The lubrication guide cylinder 7-8 is connected to the flange of the second seat plate 7-10, and a lubrication nozzle is connected to the outer peripheral wall of the lubrication guide cylinder 7-8. A plug-in member 7-13 is inserted into the lubrication guide cylinder 7-8, and a linear drive member 7-1 is also included for driving the plug-in member 7-13 to move axially along the lubrication guide cylinder 7-8.

[0022] Furthermore, a guide sleeve 7-15 is installed on the lifting ring mounting mechanism and is connected to the plug flange sleeve 7-4. The guide sleeve 7-15 and the lubrication guide sleeve 7-8 are distributed on both sides of the lifting ring mounting mechanism, that is, the guide sleeve 7-15 is connected to the flange of the first seat plate 7-7.

[0023] A second protective cover 7-11 is fixedly connected to the outer end of the lubrication guide cylinder 7-8, and a cylinder mounting seat 7-12 is fixedly connected to the outer end of the second protective cover 7-11 for mounting the linear drive component 7-1, which is an electric actuator. A cavity is provided at the center of the insert / pull-out component 7-13, and a hinge joint 7-14 is fixedly connected to the inner end of the cavity. The piston rod end of the linear drive component 7-1 is pivotally connected to the hinge joint 7-14 via a pin. This arrangement prevents jamming during the extension and retraction of the piston rod of the linear drive component 7-1 and ensures stable axial movement of the insert / pull-out component 7-13 along the lubrication guide cylinder 7-8. In addition, a first protective cover 7-6 is fixedly connected to the outer end of the guide sleeve 7-15.

[0024] Furthermore, the lower ends of both the first protective cover 7-6 and the second protective cover 7-11 are open. A switch plate base 7-3 is installed at the lower end of the second protective cover 7-11. A first limit switch 7-2 that mates with the tail end of the plug-in component 7-13 is installed on the switch plate base 7-3. A switch plate base 7-3 is installed at the lower end of the first protective cover 7-6. A second limit switch 7-5 that mates with the head end of the plug-in component 7-13 is installed on the switch plate base 7-3.

[0025] A transversely extending strip hole is provided on the switch plate base 7-3, and it is connected to the protective cover by screws passing through the transverse strip hole. A longitudinally extending strip hole is provided on the switch plate base 7-3, and a limit switch is installed by screws passing through the longitudinal strip hole.

[0026] A hinge shaft 1 is installed at the inner end of the folding arm 3, and is pivotally connected to the main frame of the lifting device through the hinge shaft 1. A locking pin 2 is inserted into the inner end of the folding arm 3 to lock the main frame of the lifting device and the folding arm 3 together. A cable support arm 4 is installed at the outer end of the folding arm 3, and multiple cable pulleys 5 are installed at the lower end of the cable support arm 4 for threading the operating cable 6. In actual operation, a shackle can be installed at the end of the operating cable 6 for installing a protective pad. During the lifting process, the protective pad is installed between the sling and the blade edge to protect the blade. The protective pad can be removed by pulling the operating cable 6 using a winch.

[0027] Working principle:

[0028] In actual operation, the folding arm 3 is installed at the end of the main frame of the lifting device, and two sets of folding arms 3 are installed; depending on the size of the blade to be lifted, a hand chain hoist 8 is installed in one of the multiple pin holes 9.

[0029] When hoisting the blades on the ground, the operator manually operates the chain hoist 8 to lower the unhooking assembly 7 to a convenient position. The linear drive 7-1 in the unhooking assembly 7 is activated, causing its piston rod to retract until the tail end of the plug-in part 7-13 triggers the first limit switch 7-2. Then, the lifting ring at the end of the sling is inserted between the two plug-in flange sleeves 7-4. The linear drive 7-1 is activated again, the piston rod extends, and the plug-in part 7-13 moves forward until its head triggers the second limit switch 7-5. At this time, the lifting ring at the end of the sling is inserted onto the plug-in part 7-13, thus achieving hooking at the end of the sling.

[0030] After hooking the two ends of the sling, the workers manually operate the chain hoist 8 again to lift the unhooking assembly 7 to the lifting position, so that the sling is taut and holding the blade. With the help of the holding device in the lifting equipment, the blade is positioned. Then the lifting equipment can be moved to lift and transfer the blade for construction and installation. After the installation is completed, the linear drive 7-1 is started again. Its piston rod retracts and drives the plug-in part 7-13 to retract and disengage from the plug-in flange sleeve 7-4, thereby realizing the unhooking operation of the blade sling end, so that the sling is detached from the blade, making it easier for the lifting equipment to carry out the next blade lifting operation.

Claims

1. A sling adapter for a wind turbine blade lifting device, characterized in that: The utility model provides a kind of lifting device, including the folding arm (3) installed on the main frame of spreader, multiple pin hole (9) are evenly distributed along its length direction in the lower part of folding arm (3), hand chain block (8) is installed in multiple pin hole (9) by pin, unhooking assembly (7) is installed on hand chain block (8);Unhooking assembly (7) includes the lifting ring mounting mechanism by the pin with the lifting end of hand chain block (8), through hole is opened in lifting ring mounting mechanism, two plug-in flange sleeves (7-4) are installed in through hole, and the inner end portion between two plug-in flange sleeves (7-4) is left gap for accommodating the lifting ring of lifting belt end;It further includes the lubrication guide cylinder (7-8) of being installed on lifting ring mounting mechanism and being communicated with plug-in flange sleeve (7-4) butt joint, plug-in piece (7-13) is penetrated in lubrication guide cylinder (7-8), and it further includes the linear drive (7-1) for driving plug-in piece (7-13) moves along the axial direction of lubrication guide cylinder (7-8).

2. The windmill blade sling adapter of claim 1, wherein: Lifting ring mounting mechanism is installed with the guide sleeve (7-15) of being connected with plug-in flange sleeve (7-4) butt joint, and guide sleeve (7-15) and lubrication guide cylinder (7-8) are distributed in the both sides of lifting ring mounting mechanism.

3. The sling adapter for the wind turbine blade lifting device as described in claim 2, characterized in that: in The outer end portion of lubrication guide cylinder (7-8) is fixedly connected with the second protective cover (7-11), and the cylinder mounting seat (7-12) is fixedly connected with the outer end portion of the second protective cover (7-11) for installing linear drive (7-1);The outer end portion of guide sleeve (7-15) is fixedly connected with the first protective cover (7-6).

4. The sling adapter for the wind turbine blade lifting device as described in claim 3, characterized in that: in The lower end portion of first protective cover (7-6) and second protective cover (7-11) is open, and the switch board seat (7-3) is installed in the open lower end portion of second protective cover (7-11), and the first limit switch (7-2) is installed on the switch board seat (7-3) and cooperates with the tail end of plug-in piece (7-13), and the switch board seat (7-3) is installed in the open lower end portion of first protective cover (7-6), and the second limit switch (7-5) is installed on the switch board seat (7-3) and cooperates with the head end of plug-in piece (7-13).

5. The windmill blade sling adapter of claim 1, wherein: Lifting ring mounting mechanism includes the first sleeve seat plate (7-7) and the second sleeve seat plate (7-10) oppositely arranged and consistent in structure, the through hole is opened in the lower part of first sleeve seat plate (7-7) and second sleeve seat plate (7-10), two plug-in flange sleeves (7-4) are respectively inserted into two through holes and are connected with corresponding sleeve seat plate flange;It further includes the hanging mounting piece (7-9) fixedly connected with the first sleeve seat plate (7-7) and the second sleeve seat plate (7-10) between the first sleeve seat plate (7-7) and the second sleeve seat plate (7-10), and the pin hole is opened in the outer end portion of hanging mounting piece (7-9);The gap is left between the first sleeve seat plate (7-7) and the second sleeve seat plate (7-10) for the lifting ring of lifting belt to pass through.

6. The windmill blade sling adapter of claim 1, wherein: Linear drive (7-1) adopts electric push rod;Cavity is arranged at the center of plug-in piece (7-13), and hinge joint (7-14) is fixedly connected with the inner end portion of cavity, and the piston rod end portion of linear drive (7-1) is pivotally connected with hinge joint (7-14) by pin.

7. The windmill blade sling adapter of claim 1, wherein the adapter comprises a first end and a second end, the first end comprising a first pin hole and the second end comprising a second pin hole, the first pin hole and the second pin hole configured to receive a pin to secure the adapter to the windmill blade sling. The inner end of the folding arm (3) is provided with a hinged shaft (1) and is pivotally connected with the main frame of the spreader through the hinged shaft (1), a locking pin shaft (2) is inserted at the inner end of the folding arm (3) for locking and connecting the main frame of the spreader and the folding arm (3); a cable supporting arm (4) is installed at the outer end of the folding arm (3), and a plurality of cable wheels (5) are installed at the lower end of the cable supporting arm (4) for threading and operating the cable (6).

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