CN219412790U - Wind driven generator blade replacement equipment based on multiple pulley blocks - Google Patents
Wind driven generator blade replacement equipment based on multiple pulley blocks Download PDFInfo
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- CN219412790U CN219412790U CN202320754188.3U CN202320754188U CN219412790U CN 219412790 U CN219412790 U CN 219412790U CN 202320754188 U CN202320754188 U CN 202320754188U CN 219412790 U CN219412790 U CN 219412790U
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- hub
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model provides wind driven generator blade replacement equipment based on a plurality of pulley blocks, which comprises the following components: blade root lifting appliance, lifting machine, wire rope and wheel hub lifting appliance; the blade root lifting appliance is arranged at the root of the blade; the hoisting machine is arranged in the hub; the steel wire rope is connected to the blade root lifting appliance and the hub lifting appliance; the wheel hub hoist comprises a hoist frame and an upper pulley block, the blade root hoist comprises a blade root hoist bracket and a lower pulley block, and the steel wire rope repeatedly passes through the upper pulley block and the lower pulley block and then is mounted on the hoister. According to the wind driven generator blade replacement equipment based on the plurality of pulley blocks, the steel wire ropes pass through the upper pulley blocks and the lower pulley blocks repeatedly and are then mounted on the hoisting machine, so that the requirement on the bearing capacity of the hoisting machine is reduced, the requirement on the tension of the steel wire ropes can be met by only one hoisting machine, and larger and heavier blades can be replaced, so that the mounting and using cost of the hoisting machine is greatly saved.
Description
Technical Field
The utility model relates to the technical field of wind driven generators, in particular to wind driven generator blade replacement equipment based on a plurality of pulley blocks.
Background
With the increasing installed capacity of wind turbines and the year-by-year growth of service lives of wind turbines, more and more units need blade replacement. At present, a general wind driven generator adopts a large-sized automobile crane to replace the blades, a crawler crane is required to be used for replacing the blades by a large megawatt high tower fan, and a landing leg ship is required to be used for replacing the blades by an offshore wind driven generator. The use of large hoisting equipment generally results in high hoisting costs and is subject to environmental conditions, under which large hoisting equipment cannot be used.
Accordingly, there is a need to provide a wind turbine blade replacement device based on a plurality of pulley blocks for solving the above-mentioned problems.
Disclosure of Invention
The utility model aims to provide wind driven generator blade replacement equipment based on a plurality of pulley blocks, and because a steel wire rope repeatedly passes through an upper pulley block and a lower pulley block and is then mounted on a lifting machine, the tension requirement on the steel wire rope can be met by only one lifting machine, and the mounting and using cost of the lifting machine is greatly saved.
The embodiment of the utility model provides wind driven generator blade replacement equipment based on a plurality of pulley blocks, which comprises the following components: blade root lifting appliance, lifting machine, wire rope and wheel hub lifting appliance; the blade root lifting appliance is arranged at the root of the blade; the hoisting machine is arranged in the hub; the steel wire rope is connected to the blade root lifting appliance and the hub lifting appliance; the wheel hub hoist comprises a hoist frame and an upper pulley block, the blade root hoist comprises a blade root hoist bracket and a lower pulley block, and the steel wire rope repeatedly passes through the upper pulley block and the lower pulley block and then is mounted on the hoister.
Optionally, the upper pulley block is fixed on the hanger frame through a pin shaft.
Optionally, a lifting point is provided on the lifting frame.
Optionally, the hub sling is fixed on the hub through a connecting mechanism and an anchor point mechanism, and the anchor point mechanism is fixed on the hub through a fastening device.
Optionally, the hoisting machine is provided with a mounting mechanism, which is connected to the hub sling.
Optionally, the mounting mechanism is provided with a force measuring device for measuring the load of the wire rope.
Optionally, the lower pulley block is fixed on the blade root sling bracket.
Optionally, the lower pulley block is fixed at the center of the blade root sling bracket.
Optionally, the blade root sling bracket is fixed to the root of the blade by a fastener.
Optionally, the blade root sling bracket comprises a first end and a second end, wherein the first end is fixed at a first fixed point of the root of the blade, the second end is fixed at a second fixed point of the root of the blade, and a connecting line between the first fixed point and the second fixed point passes through the center of the cross section of the blade.
Compared with the prior art, the technical scheme of the embodiment of the utility model has at least the following beneficial effects:
according to the wind driven generator blade replacement equipment based on the plurality of pulley blocks, the steel wire ropes repeatedly pass through the upper pulley blocks and the lower pulley blocks and are then installed on the hoisting machine, so that the requirement on the bearing capacity of the hoisting machine is reduced, the requirement on the tension of the steel wire ropes can be met by only one hoisting machine, and larger and heavier blades can be replaced, so that the installation and use cost of the hoisting machine is greatly saved;
further, the blade root sling comprises a first end and a second end, the first end is fixed at a first fixed point of the root of the blade, the second end is fixed at a second fixed point of the root of the blade, and a connecting line between the first fixed point and the second fixed point passes through the circle center of the cross section of the blade, so that the stress is more uniform when the blade is hoisted, and the blade can be stably lifted or lowered.
Drawings
FIG. 1 is a schematic diagram of the primary system of a wind turbine in an embodiment of the present utility model;
FIG. 2 is a schematic structural view of a wind turbine blade replacement apparatus based on multiple pulley blocks according to an embodiment of the present utility model;
FIG. 3 is another schematic view of a wind turbine blade replacement apparatus based on multiple pulley blocks according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a further construction of a wind turbine blade replacement apparatus based on a plurality of pulley blocks according to an embodiment of the utility model;
fig. 5 is a schematic structural view of a hub sling in a wind turbine blade replacement device based on a plurality of pulley blocks according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a hoist; 2. A wire rope; 3. Blade root sling;
4. a hub sling; 5. An anchor point mechanism; 6. A connecting mechanism;
11. a mounting mechanism; 12. A force measuring device; 31. A blade root sling bracket;
32. a lower pulley block; 41. A spreader frame; 42. And (5) an upper pulley block.
Detailed Description
In order to make the objects, features and advantageous effects of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the following detailed description is merely illustrative of the utility model, and not restrictive of the utility model. Moreover, the use of the same, similar reference numbers in the figures may indicate the same, similar elements in different embodiments, and descriptions of the same, similar elements in different embodiments, as well as descriptions of prior art elements, features, effects, etc. may be omitted.
It should be noted that, in order to clearly illustrate the wind turbine blade replacement apparatus based on the plurality of pulley blocks in the embodiment of the present utility model, fig. 2 to 5 hide a part of the original wind turbine components in the hub.
Referring now to fig. 1 to 4, the wind turbine main system in the embodiment of the present utility model mainly includes a nacelle, a tower, a hub, blades and a blade replacement apparatus, the tower is fixed on the ground, the nacelle is fixed on the top of the tower, the hub is fixed on the nacelle, the blades are fixed on the hub, typically, 3 blades are uniformly fixed on the hub.
Specifically, a wind-driven generator blade replacement device based on a plurality of pulley blocks comprises: blade root lifting appliance 3, lifting machine 1, wire rope 2 and wheel hub lifting appliance 4; the blade root lifting appliance 3 is arranged at the root of the blade; the hoisting machine 1 is arranged in the hub; the steel wire rope 2 is connected to the blade root lifting appliance 3 and the hub lifting appliance 4; the hub sling 4 comprises a sling frame 41 and an upper pulley block 42, the blade root sling 3 comprises a blade root sling bracket 31 and a lower pulley block 32, and the steel wire rope 2 is repeatedly installed on the lifting machine 1 after passing through the upper pulley block 42 and the lower pulley block 32.
The number of the hoisting machines 1 is one, and the hoisting machines are arranged in the hub, and because the steel wire ropes 2 are repeatedly installed on the hoisting machines 1 after passing through the upper pulley block 42 and the lower pulley block 32, the requirement on the tension of the steel wire ropes 2 can be met by only one hoisting machine 1, so that the installation and use cost of the hoisting machines is greatly saved.
Referring now to fig. 2 and 4, hub sling 4 is fixed on the hub, hoist 1 is fixed on hub sling 4, blade root sling 3 is fixed on the blade root, wire rope 2 is connected on hub sling 4 and blade root sling 3, wire rope 2 installs last on hoist 1, can control hoist 1 through control system to control wire rope 2 to pull up or put down. The control system may also include a control cabinet, such as a PLC control cabinet.
In a specific implementation, the upper pulley block 42 is fixed on the hanger frame 41 through a pin, and a hanging point is arranged on the hanger frame 41. The pin shaft can be replaced by a person skilled in the art according to the fixing requirement of the upper pulley block 42, and will not be described here again.
In a specific implementation, the hub sling 4 is fixed on the hub by a connecting mechanism 6 and an anchor point mechanism 5, and the anchor point mechanism 5 is fixed on the hub by a fastening device. The fastening device may be a bolt or a screw, or may be other fastening devices, which will not be described herein.
Referring now to fig. 5, in an implementation the hoisting machine 1 is provided with a mounting mechanism 11, which mounting mechanism 11 is connected to the hub sling 4. The mounting mechanism 11 is further provided with a force measuring device 12, and the force measuring device 12 is used for measuring the load of the steel wire rope 2.
In particular, the lower pulley block 32 is fixed to the blade root spreader bracket 31. Preferably, the lower pulley block 32 is fixed in a central position of the blade root spreader bracket 31. The blade root sling bracket 31 is fixed at the root of the blade by a fastener. The fastening piece can be a bolt and a screw rod, and can also be other fastening pieces, which are not described herein.
In a specific implementation, the blade root sling bracket 3 comprises a first end and a second end, the first end is fixed at a first fixed point of the root of the blade, the second end is fixed at a second fixed point of the root of the blade, and a connecting line between the first fixed point and the second fixed point passes through the center of the cross section of the blade, so that the stress is more uniform when the blade is hoisted, and the blade can be stably lifted or lowered.
When the wind driven generator blade replacement equipment based on the plurality of pulley blocks is used, the wind driven generator blade replacement equipment comprises two application scenes of detaching blades and installing blades, and the wind driven generator blade replacement equipment is specifically described below.
When the blade is dismounted, firstly the blade to be dismounted is adjusted to a vertical downward position, then the anchor point mechanism 5 is fixed on the hub, the hub lifting appliance 4 is fixed on the anchor point, and then the lifting machine 1 is fixed on the hub lifting appliance 4. The blade is lowered by a distance, typically 30-80cm, using special blade equipment, such as electric hoist, hydraulic/pneumatic equipment, after which the blade root sling 3 is fixed to the blade root, the wire rope 2 is connected to the hub sling 4 and the blade root sling 3, the wire rope 2 is finally mounted on the hoisting machine 1, the hoisting machine 1 is started and the wire rope 2 is tensioned. And then removing special equipment for the blade, starting the lifter 1 to downwards discharge the steel wire rope 2, and removing the blade root lifting appliance 3 after the blade is lowered to a desired position.
When the blade is installed, the blade root lifting appliance 3 is fixed on the blade to be installed, the lifting machine 1 is started to retract the steel wire rope 2 upwards, the blade is lifted to reach a specified position in the air, when the distance from the hub is 30 cm to 80cm, the blade special equipment is installed, the blade root lifting appliance 3 is removed, the blade is lifted to the installation position through the blade special equipment, and the blade root bolt is installed and fastened, and then the blade replacement equipment is removed.
Compared with the prior art, the technical scheme of the embodiment of the utility model has at least the following beneficial effects:
according to the wind driven generator blade replacement equipment based on the plurality of pulley blocks, provided by the embodiment of the utility model, the blades are replaced by using the elevator, a tower bottom power device is not needed, lifting equipment such as a steel wire rope is not needed to be arranged from the tower bottom to the tower top, and all the equipment is placed in the hub, so that the structure is more compact, and the use is more convenient;
furthermore, the blades are replaced by using the elevator, a tower bottom power device is not needed, lifting equipment such as a steel wire rope is not needed to be arranged from the tower bottom to the tower top, and all the equipment is placed in the hub, so that the structure is more compact, and the use is more convenient;
furthermore, as the steel wire rope repeatedly passes through the upper pulley block and the lower pulley block and is then mounted on the elevator, the requirement of the elevator on the bearing capacity is reduced, so that the requirement on the tension of the steel wire rope can be met by only one elevator, and larger and heavier blades can be replaced, thereby greatly saving the mounting and using cost of the elevator;
further, the blade root sling comprises a first end and a second end, the first end is fixed at a first fixed point of the root of the blade, the second end is fixed at a second fixed point of the root of the blade, and a connecting line between the first fixed point and the second fixed point passes through the circle center of the cross section of the blade, so that the stress is more uniform when the blade is hoisted, and the blade can be stably lifted or lowered.
Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless stated differently. In practice, the features of one or more of the dependent claims may be combined with the features of the independent claims where technically possible, according to the actual needs, and from the features of the respective independent claims in any appropriate manner, not only by the specific combinations enumerated in the claims.
Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.
Claims (10)
1. Wind driven generator blade replacement equipment based on a plurality of assembly pulley, characterized by comprising:
blade root lifting appliance, lifting machine, wire rope and wheel hub lifting appliance; the blade root lifting appliance is arranged at the root of the blade; the hoisting machine is arranged in the hub; the steel wire rope is connected to the blade root lifting appliance and the hub lifting appliance; the wheel hub hoist comprises a hoist frame and an upper pulley block, the blade root hoist comprises a blade root hoist bracket and a lower pulley block, and the steel wire rope repeatedly passes through the upper pulley block and the lower pulley block and then is mounted on the hoister.
2. The multiple pulley block based wind turbine blade replacement apparatus of claim 1 wherein the upper pulley block is secured to the spreader frame by a pin.
3. The multiple pulley block based wind turbine blade replacement apparatus of claim 1 wherein a lifting point is provided on the spreader frame.
4. The multiple pulley block based wind turbine blade replacement apparatus of claim 1 wherein the hub sling is secured to the hub by a connection means and an anchor means secured to the hub by a fastening means.
5. Wind turbine blade replacement device based on a plurality of pulley blocks according to claim 1, characterized in that the hoisting machine is provided with a mounting mechanism, which is connected to the hub sling.
6. Wind turbine blade replacement device based on a plurality of pulley blocks according to claim 5, characterized in that the mounting mechanism is provided with a force measuring device for measuring the load of the wire rope.
7. The multiple pulley block based wind turbine blade replacement apparatus of claim 1 wherein the lower pulley block is secured to the blade root spreader bracket.
8. The multiple pulley block based wind turbine blade replacement apparatus of claim 7 wherein the lower pulley block is fixed in a central position of the blade root spreader bracket.
9. The multiple pulley block based wind turbine blade replacement apparatus of claim 1 wherein the blade root sling mount is secured to the root of the blade by fasteners.
10. The multiple pulley block based wind turbine blade replacement apparatus of claim 9 wherein the blade root sling bracket includes a first end portion and a second end portion, the first end portion being secured to a first fixed point at the root of the blade and the second end portion being secured to a second fixed point at the root of the blade, a line between the first and second fixed points passing through the center of the cross-section of the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320754188.3U CN219412790U (en) | 2023-04-07 | 2023-04-07 | Wind driven generator blade replacement equipment based on multiple pulley blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320754188.3U CN219412790U (en) | 2023-04-07 | 2023-04-07 | Wind driven generator blade replacement equipment based on multiple pulley blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219412790U true CN219412790U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320754188.3U Active CN219412790U (en) | 2023-04-07 | 2023-04-07 | Wind driven generator blade replacement equipment based on multiple pulley blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219412790U (en) |
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2023
- 2023-04-07 CN CN202320754188.3U patent/CN219412790U/en active Active
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