Aerial suspender hook device and single-blade dismounting method of wind driven generator

Abstract

The invention relates to an aerial sling hook device and a single-blade dismounting method of a wind driven generator, and belongs to the field of wind power equipment hoisting, the aerial sling hook device comprises a single-blade sling, a sling fixing part and a first electric detacher are fixedly arranged below the single-blade sling, the sling fixing part is fixedly connected with one end of a sling, and the sling fixing part is fixedly connected with the other end of the sling. A first ring buckle is arranged at the other end of the hanging belt; the first electric detacher is detachably provided with a winder, the winder is provided with a pulling rope used for pulling the first buckle to be connected with the first electric detacher, one end of the pulling rope is perpendicular to the ground, and the other end of the pulling rope penetrates through the winder to be fixedly connected with the first buckle. The hanging device has the beneficial effects that one end of the hanging belt is connected to the hanging belt fixing part, the other end of the hanging belt is connected to the traction rope, the hanging belt is pulled through the traction rope in the air, the first ring buckle is hung on the first electric detacher, hanging of the hanging belt in the air is achieved, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of wind power equipment hoisting, in particular to an aerial sling hook device and a single blade disassembly method of a wind power generator. Background Art

[0002] In the field of wind power, when a blade of a wind turbine is damaged due to lightning strike, tower sweeping, or quality problems, the damaged blade needs to be replaced separately. The replacement is usually done by lifting with a double vehicle or clamping single blade hoist. However, the above methods are long in construction, require a large area of ​​land, and are expensive. They do not meet the current requirements for cost reduction and efficiency improvement. The use of a horizontal hoisting single blade hoist also has the problem of difficulty in hooking the sling in the air, resulting in low work efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a device capable of hooking an aerial sling and a method for disassembling a single blade.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: an aerial sling hook device, comprising a single-blade sling, a sling fixing part and a first electric unhooking device are fixedly provided below the single-blade sling, one end of the sling is fixedly connected to the sling fixing part, and the other end of the sling is provided with a first buckle;

[0005] A cable winder is detachably mounted on the first electric unhooking device, and a traction rope is provided on the cable winder for pulling the first buckle and connecting it with the first electric unhooking device. One end of the traction rope hangs to the ground, and the other end passes through the cable winder and is fixedly connected to the first buckle.

[0006] The beneficial effects of the present invention are as follows: one end of the sling is connected to the sling fixing part, and the other end is connected to the traction rope. The sling is pulled in the air by the traction rope, so that the first buckle is hung on the first electric unhooking device, thereby realizing the sling hanging in the air, improving construction efficiency and reducing construction costs.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a mounting hole is provided on the electric unhooking device, and the wire winder is fixedly installed in the mounting hole by bolts.

[0009] The beneficial effect of adopting the above further solution is that the bolt connection is stable and easy to disassemble and replace.

[0010] Furthermore, the sling fixing portion is a second electric unhooking device.

[0011] The beneficial effects of adopting the above further solution are: remote control of opening and closing, and high degree of automation.

[0012] Furthermore, a second buckle is provided at one end of the sling close to the second electric unhooking device, and the second buckle is fixedly connected to the second electric unhooking device.

[0013] The beneficial effect of adopting the above further solution is that the sling is easy to install and remove.

[0014] Furthermore, the sling is a flat sling.

[0015] The beneficial effect of adopting the above further solution is that the flat sling has a wide load-bearing surface, which can reduce the pressure of the surface load and will not scratch the surface of the suspended object.

[0016] A method for disassembling a single blade of a wind turbine generator comprises the following steps:

[0017] S1, the first electric unhooking device is turned on;

[0018] S2. Fix one end of the traction rope hanging down to the ground and let it hang down to form a loop;

[0019] S3, moving the single-blade hoist to the tip of the blade to be hoisted;

[0020] S4, put the ring formed by the sling and the traction rope onto the blade to be hoisted, and move it to the position to be hoisted;

[0021] S5, pulling one end of the traction rope on the ground to make the first ring buckle hook into the first electric unhooking device;

[0022] S6, the first electric unhooking device is closed, and the sling hook is completed;

[0023] S7. Disassemble the blades to be hoisted and lift them.

[0024] The beneficial effect of adopting the above further scheme is that the middle part of the traction rope hangs down to form a ring, and the ring is inserted into the blade to be hoisted for lifting work. The sling hook can be completed in the air, and workers do not need to work at high altitude, which reduces safety hazards and improves construction efficiency.

[0025] Furthermore, when executing step S3, the lowest point of the loop formed by the sling and the traction rope is kept close to the ground.

[0026] The beneficial effect of adopting the above further solution is: increasing the annular space as much as possible to better fit the blades to be hoisted.

[0027] Furthermore, the traction rope is fixedly connected to the first ring buckle by binding.

[0028] The beneficial effect of adopting the above further solution is that it is easy to dismantle after the construction is completed, does not require destructive dismantling, and can be reused.

[0029] Furthermore, one end of the traction rope hanging down to the ground is fixed to an immovable object on the ground.

[0030] The beneficial effect of adopting the above further solution is to prevent the traction rope from moving.

[0031] Furthermore, when executing steps S1 to S7, the average wind speed is required to be less than 5 m / s.

[0032] The beneficial effects of adopting the above further scheme are: ensuring construction safety and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a working schematic diagram of the present invention.

[0034] Figure 2 It is a schematic diagram of a wire winder of the present invention.

[0035] Figure 3 It is a schematic diagram of a first ring buckle of the present invention.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Single-blade lifting device; 2. Sling fixing part; 3. First electric unhooking device; 4. Winder; 5. Sling; 6. Traction rope; 7. First buckle; 8. Blade to be lifted. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] Example 1

[0040] like Figures 1 to 3 As shown, an aerial sling hook device includes a single-blade sling 1, a sling fixing part 2 and a first electric unhooking device 3 are fixedly provided below the single-blade sling 1, one end of a sling 5 is fixedly connected to the sling fixing part 2, and a first buckle 7 is provided at the other end of the sling 5;

[0041] The first electric unhooker 3 is detachably mounted with a cable winder 4, and the cable winder 4 is provided with a traction rope 6 for pulling the first ring buckle 7 connected to the first electric unhooker 3, one end of the traction rope 6 hangs down to the ground, and the other end passes through the cable winder 4 and is fixedly connected to the first ring buckle 7.

[0042] The beneficial effects of this embodiment are as follows: one end of the sling 5 is connected to the sling fixing part 2, and the other end is connected to the traction rope 6. The sling 5 is pulled in the air by the traction rope 6, so that the first buckle 7 is hung on the first electric unhooking device 3, and the sling 5 is hooked in the air, thereby improving construction efficiency and reducing construction costs.

[0043] Specifically, in this embodiment, the sling 5 and the traction rope 6 are both provided in more than two groups, which are arranged along the length direction of the blade to better carry out the blade hoisting; the winder 4 has a plurality of fixed pulleys, and the traction rope 6 is wound around the fixed pulleys for easy sliding and pulling; the first electric unhooking device 3 includes a body approximately in a U shape and a retractable pin located inside the body, and the pin is controlled to be retracted by an electrical signal, and when the pin is extended, the body forms a U-shaped lock;

[0044] In the initial state, the single-blade sling 1 is connected to the crane, the first buckle 7 is located outside the first electric unhooking device 3, and the winder 4 is located directly above the first electric unhooking device 3; when lifting is required, the first electric unhooking device 3 is opened, the pin is retracted into the body, and the traction rope 6 is pulled upward until the first buckle 7 moves to the pin position, the pin extends out and passes through the first buckle 7, restricting the first buckle 7 in the body of the first electric unhooking device 3, thereby realizing the aerial hook fixation of the sling 5.

[0045] Example 2

[0046] like Figures 1 to 3 As shown, preferably, on the basis of Example 1, a mounting hole is provided on the electric unhooking device 3, and the wire winder 4 is fixedly installed in the mounting hole by bolts.

[0047] The beneficial effects of adopting the preferred solution in the above embodiment are: the bolt connection is stable and easy to disassemble and replace.

[0048] Example 3

[0049] like Figures 1 to 3 As shown, preferably, on the basis of Embodiment 1-2, the sling fixing part 2 is a second electric unhooking device.

[0050] Preferably, a second buckle is provided at one end of the sling 5 close to the second electric unhooking device, and the second buckle is fixedly connected to the second electric unhooking device.

[0051] In this embodiment, the second buckle and the second electric unhooker are first connected on the ground before lifting, which is convenient for the installation and removal of the sling 5. The end where the first buckle 7 is located is connected after lifting, and the opening and closing are remotely controlled, with a high degree of automation.

[0052] On the basis of this embodiment, a second winding device may also be provided on the second electric unhooking device, a second traction rope may be provided on the second winding device, the second traction rope is fixedly connected to the second ring buckle, the second ring buckle of the sling 5 is not buckled into the second electric unhooking device in the initial state, but is suspended by the second traction rope, and the sling 5 may form a larger ring shape;

[0053] During hoisting, both sides of the sling 5 are pulled upward by the traction rope 6 at the same time, the first ring buckle 7 is buckled into the first electric unhooking device 3, and the second ring buckle is buckled into the second electric unhooking device, so that both sides are hooked synchronously.

[0054] Example 4

[0055] like Figures 1 to 3 As shown, preferably, on the basis of embodiments 1-3, the sling 5 is a flat sling.

[0056] The beneficial effects of adopting the preferred solution in the above embodiment are: the flat sling has a wide load-bearing surface, which can reduce the pressure of the surface load and will not scratch the surface of the suspended object.

[0057] Example 5

[0058] like Figures 1 to 3 As shown, preferably, based on embodiments 1-4, a method for disassembling a single blade of a wind turbine includes the following steps:

[0059] S1, the first electric decoupling device 3 is turned on;

[0060] S2, hang one end of the traction rope 6 to the ground and fix it to the ground, and hang the end of the traction rope 6 connected to the sling 5 to form a ring;

[0061] S3, moving the single-blade hoist 1 to the tip of the blade 8 to be hoisted;

[0062] S4, insert the ring formed by the sling 5 and the traction rope 6 into the blade 8 to be hoisted, and move it to the position to be hoisted;

[0063] S5, pull one end of the traction rope 6 on the ground to make the first ring buckle 7 hang into the first electric unhooking device 3;

[0064] S6, the first electric unhooking device 3 is closed, and the sling hook is completed;

[0065] S7, dismantling the blade 8 to be hoisted and hoisting it.

[0066] The beneficial effects of this embodiment are as follows: the middle part of the traction rope 6 droops to form a ring, and the ring is inserted into the blade to be hoisted 8 for lifting work, and the sling 5 can be hooked in the air without workers having to work at high altitudes, reducing safety hazards and improving construction efficiency.

[0067] Specifically, when the blades need to be removed, the fan is stopped first, and the blades to be hoisted 8 are rotated to a suitable hoisting direction, such as Figure 1 As shown, the single-blade sling 1 is connected to the crane, one end of the sling 5 is fixed below the single-blade sling 1, and the other end is suspended in the air and provided with a first buckle 7, one end of the traction rope 6 is fixed to the ground, and the other end passes through the winder 4 and is fixedly connected to the first buckle 7;

[0068] Before lifting, increase the amount of line release at one end of the traction rope 6 connected to the first ring buckle 7, so that the middle of the traction rope 6 hangs to the ground to form a ring, and the single-blade lifting device 1 with the traction rope 6 is inserted into the blade 8 to be lifted from the tip of the blade 8 to be lifted;

[0069] Then pull one end of the traction rope 6 fixed on the ground to drive the first ring buckle 7 to move to the first electric unhooking device 3, and the pin is extended to confine the first ring buckle 7 in the first electric unhooking device 3. At this time, both ends of the sling 5 are fixed under the single-blade sling 1, and then the single-blade sling 1 rises, and the sling 5 is forced to support the blade 8 to be hoisted. The lower tower can be hoisted after removing the various connection points of the blade 8 to be hoisted.

[0070] Example 6

[0071] like Figures 1 to 3 As shown, preferably, based on embodiments 1-5, when executing step S3, the lowest point of the loop formed by the sling 5 and the traction rope 6 is kept close to the ground.

[0072] Preferably, the traction rope 6 is fixedly connected to the first ring buckle 7 by binding.

[0073] Preferably, one end of the traction rope 6 hanging down to the ground is fixed to an immovable object on the ground.

[0074] Preferably, when executing steps S1 to S7, the average wind speed is required to be less than 5 m / s.

[0075] In this embodiment, the loop formed by the traction rope 6 is as large as possible to better fit into the blade 8 to be hoisted. Before construction, the wind force is detected to check whether the end of the traction rope 6 on the ground is firm and stable to prevent the sling 5 from slipping and causing safety hazards.

[0076] After the traction construction is completed, the traction rope 6 can be removed and reused.

[0077] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0082] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An aerial sling hook device, characterized in that: The invention comprises a single-blade sling (1), a sling fixing part (2) and a first electric unhooking device (3) are fixedly provided below the single-blade sling (1), one end of a sling (5) is fixedly connected to the sling fixing part (2), and the other end of the sling (5) is provided with a first buckle (7); A wire winder (4) is detachably mounted on the first electric unhooking device (3), and a traction rope (6) is provided on the wire winder (4) for pulling the first ring buckle (7) and connecting it to the first electric unhooking device (3). One end of the traction rope (6) hangs down to the ground, and the other end passes through the wire winder (4) and is fixedly connected to the first ring buckle (7).

2. An aerial sling hook device according to claim 1, characterized in that: The electric unhooking device (3) is provided with a mounting hole, and the wire winder (4) is fixedly mounted in the mounting hole by means of bolts.

3. An aerial sling hook device according to claim 1, characterized in that: The sling fixing part (2) is a second electric unhooking device.

4. An aerial sling hook device according to claim 3, characterized in that: A second buckle is provided at one end of the sling (5) close to the second electric unhooking device, and the second buckle is fixedly connected to the second electric unhooking device.

5. The aerial sling hook device according to claim 1, characterized in that: The sling (5) is a flat sling.

6. A method for disassembling a single blade of a wind turbine, characterized in that: The method of hoisting using the aerial sling hook device according to any one of claims 1 to 5 comprises the following steps: S1, the first electric unhooking device (3) is turned on; S2, hang one end of the traction rope (6) to the ground and fix it to the ground, and hang the end of the traction rope (6) connected to the sling (5) to form a ring; S3, moving the single-blade lifting device (1) to the tip of the blade (8) to be lifted; S4, inserting the ring formed by the lifting belt (5) and the traction rope (6) onto the blade (8) to be hoisted, and moving it to the position to be hoisted; S5, pulling one end of the traction rope (6) on the ground, so that the first ring buckle (7) is hooked into the first electric unhooking device (3); S6, the first electric unhooking device (3) is closed, and the sling hook is completed; S7, dismantling the blade to be hoisted (8) and hoisting it.

7. A method for disassembling a single blade of a wind turbine according to claim 6, characterized in that: When executing step S3, the lowest point of the loop formed by the sling (5) and the traction rope (6) is kept close to the ground.

8. A method for disassembling a single blade of a wind turbine according to claim 6, characterized in that: The traction rope (6) is fixedly connected to the first ring buckle (7) by tying.

9. A method for disassembling a single blade of a wind turbine according to claim 6, characterized in that: One end of the traction rope (6) hanging down to the ground is fixed on an immovable object on the ground.

10. A method for disassembling a single blade of a wind turbine according to claim 6, characterized in that: When executing steps S1 to S7, the average wind speed is required to be less than 5 m / s.

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