Horizontal single-blade lifting appliance for wind turbine generator
By introducing limit devices and pressure relief devices into the wind turbine lifting tool, the problem of blade damage caused by excessive force on the clamping plate was solved, achieving safe and reliable blade lifting and improving the performance of the lifting tool.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG HUADIAN TIANSHAN POWER GENERATION CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-10
AI Technical Summary
When lifting wind turbine blades, the cylinder force of the existing lifting tool is difficult to control, which can easily damage the blades and reduce the practicality of the lifting tool.
A horizontal single-blade lifting device for wind turbines was designed. It adopts a limiting device including a threaded cylinder, a screw, a fixing block, and a fixing tube. The screw rotates in the threaded cylinder and is inserted into the fixing tube to limit the maximum displacement of the clamping plate and avoid excessive force on the clamping plate. Combined with a pressure relief device, it prevents excessive air pressure and protects the blade.
It effectively limits the maximum displacement of the clamping plate, avoids damage to the blades, improves the safety of hoisting and the practicality of the lifting equipment, and prevents damage to the clamping plate and the fixing pipe.
Smart Images
Figure CN224105405U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hoist technical field especially relates to a horizontal single blade hoist of wind turbine generator unit. BACKGROUND
[0002] Wind driven generator is the mechanical work that will wind energy conversion, mechanical work drives rotor rotation, ultimately output ac power equipment, wind driven generator equipment blade is indispensable key component of wind driven generator equipment, the work efficiency of wind energy conversion plays a decisive factor, influence wind power generation and power generation cost, when installing blade, need to hoist blade through hoist.
[0003] Prior art in use hoist hoist blade, need to be squeezed blade through the cylinder with clamping plate, but the cylinder force on the hoist is inconvenient control, thereby leading to clamping plate easily clamping damage blade, the practicability of hoist reduces. UTILITY MODEL CONTENTS
[0004] The utility model discloses a horizontal single blade hoist of wind turbine generator unit to solve the shortcoming in prior art.
[0005] In order to realize the above purpose, the utility model adopts the following technical scheme: a horizontal single blade hoist of wind turbine generator unit, including main girder, both ends of main girder are fixedly connected with two supports, wherein main girder can be placed on the ground with the help of support and provide support to the whole, the upper surface of main girder is fixedly connected with lifting lug with the help of traction rope, the cylinder is fixedly installed on one side of support, the output end of cylinder is fixedly connected with clamping plate, wherein the section of clamping plate is L-shaped, and the limiting device is arranged on one side of clamping plate, wherein the limiting device can limit the maximum displacement of two clamping plates.
[0006] The effect reached by the above-mentioned components is that when it is necessary to hoist the blade, the staff first moves the main girder to the blade, then the staff opens the cylinder, the cylinder takes the two clamping plates close to each other, and finally the two clamping plates squeeze the blade, achieving the effect of fixing the blade, and the limiting device limits the two clamping plates to avoid the clamping plate from clamping damage to the blade. Finally, the lifting hook of the crane is hung on the lifting lug of the main girder to hoist the main girder and the blade.
[0007] Preferably, the limiting device includes a threaded cylinder, the threaded cylinder is installed on one side of one of the clamping plates, a threaded hole is formed in the threaded cylinder, a threaded rod is screwed into the threaded hole, one end of the threaded rod is fixedly connected with a fixed block, and the other clamping plate is fixedly connected with a fixed tube on one side, wherein the inner dimension of the fixed tube is matched with the size of the fixed block.
[0008] The effect achieved by the above-mentioned components is that before the blade needs to be fixed, the worker rotates the fixing block, the fixing block rotates with the screw in the threaded cylinder, the total length of the screw and the threaded cylinder changes, when matched with the blade, the worker stops rotating the fixing block, when the two clamping plates are close to each other, the fixing block at one end of the screw is inserted into the inside of the fixing tube, as the fixing block is continuously inserted, the space inside the fixing tube is continuously compressed, the air pressure inside the fixing tube becomes larger, the movement of the fixing block and the clamping plate is slowed down, when the surface of the clamping plate is attached to the blade, one end of the fixing block abuts against the inner wall of the fixing tube, the effect of limiting the clamping plate is achieved, the effect of limiting the maximum displacement of the two clamping plates is achieved through the limiting device, the force of the cylinder moving with the clamping plate is avoided to be too large, so that the damage of the blade is avoided.
[0009] Preferably, the circular arc surface of the fixing block is uniformly provided with a plurality of anti-skid grooves, and the plurality of anti-skid grooves are circumferentially distributed.
[0010] The effect achieved by the above-mentioned components is that the friction between the hands of the worker and the fixing block is increased by setting the anti-skid grooves, which facilitates the movement of the worker to the fixing block.
[0011] Preferably, one end of the fixing tube is provided with a slope, and the slope is inclined towards the inside of the fixing tube.
[0012] The effect achieved by the above-mentioned components is that the fixing block is inserted into the inside of the fixing tube through the setting of the slope, which is convenient for the worker.
[0013] Preferably, one end of the fixing block is fixedly connected with a rubber pad, and the size of the rubber pad is matched with the size of the fixing block.
[0014] The effect achieved by the above-mentioned components is that the fixing block is protected by setting the rubber pad, which avoids the collision between the fixing block and the inner wall of the fixing tube, so as to avoid the damage of the fixing block.
[0015] Preferably, the circular arc surface of the fixing tube is provided with an auxiliary device, the auxiliary device comprises a pressure relief pipe, the pressure relief pipe is fixedly connected to the circular arc surface of the fixing tube, the pressure relief pipe and the fixing tube are in communication with each other, the inner wall of the pressure relief pipe is fixedly connected with a spring, one end of the spring is fixedly connected with a piston, the size of the piston is matched with the size of the inside of the pressure relief pipe, and the circular arc surface of the pressure relief pipe is provided with a pressure relief port.
[0016] The effect achieved by the above components is that when the air pressure inside the fixing tube is too large, the air inside the fixing tube extrudes the piston, the piston moves towards the direction of the pressure relief port, the spring is deformed, and finally after the piston moves past the pressure relief port, the air inside the fixing tube is discharged through the pressure relief port; when the air pressure inside the fixing tube is small, the piston moves back to the original position under the action of the spring reset force, facilitating next use, the auxiliary device achieves the effect of relieving the air inside the fixing tube, avoids the case that the fixing tube is damaged due to the air pressure inside the fixing tube being too large.
[0017] Preferably, one side of the piston is fixedly connected with a pull rope, and one end of the pull rope fixedly connected with a pull ring.
[0018] The effect achieved by the above components is that when the fixing block needs to be removed from the fixing tube, the worker pulls the pull rope through the pull ring, and the pull rope moves the piston past the pressure relief port, facilitating the air to enter the inside of the fixing tube, and avoiding the case that the space inside the fixing tube is large, the air inside the fixing tube is too small, and the fixing block cannot be removed from the fixing tube.
[0019] In summary, the beneficial effects of the utility model are that:
[0020] Before the blade needs to be fixed, the worker rotates the fixing block, the fixing block rotates in the threaded cylinder with the screw rod, the total length of the screw rod and the threaded cylinder changes, when the blade is matched, the worker stops rotating the fixing block, when the two clamping plates are close to each other, the fixing block at one end of the screw rod is inserted into the inside of the fixing tube, with the continuous insertion of the fixing block, the space inside the fixing tube is continuously compressed, the air pressure inside the fixing tube is large, and the movement of the fixing block and the clamping plate is slowed down, when the surface of the clamping plate is attached to the blade, one end of the fixing block abuts against the inner wall of the fixing tube, the effect of limiting the clamping plate is achieved, the limiting device achieves the effect of limiting the maximum displacement of the two clamping plates, and avoids the case that the air cylinder moves with the clamping plate too hard, thereby causing the damage of the blade. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a schematic diagram of a three-dimensional structure of the utility model;
[0022] Figure 2 It is a schematic diagram of a three-dimensional structure of the utility model limiting device;
[0023] Figure 3 It is a sectional view of the utility model pressure relief pipe;
[0024] Figure 4 It is an enlarged view of A of the utility model. Figure 3
[0025] Legend: 1, main beam; 2, support; 3, air cylinder; 4, clamping plate; 5, limiting device; 51, threaded cylinder; 52, screw rod; 53, fixed block; 54, fixed tube; 55, anti-skid groove; 56, rubber pad; 57, slope; 6, auxiliary device; 61, pressure relief pipe; 62, spring; 63, piston; 64, pressure relief port; 65, pull rope; 66, pull ring. DETAILED DESCRIPTION
[0026] Referring to Figures 1-4 The embodiment shown discloses a horizontal single-blade lifting appliance for a wind turbine, which comprises a main beam 1, both ends of the main beam 1 are fixedly connected with two supports 2, wherein the main beam 1 can be placed on the ground by means of the supports 2 to provide support for the whole, and the upper surface of the main beam 1 is fixedly connected with lifting lugs by means of a traction rope; an air cylinder 3 is fixedly installed on one side of the support 2, and the output end of the air cylinder 3 is fixedly connected with a clamping plate 4, wherein the cross section of the clamping plate 4 is L-shaped; a limiting device 5 is arranged on one side of the clamping plate 4, wherein the limiting device 5 can limit the maximum displacement of the two clamping plates 4. When it is necessary to hoist and transport the blade, the staff first moves the main beam 1 to the blade, then the staff opens the air cylinder 3, the air cylinder 3 brings the two clamping plates 4 close to each other, finally the two clamping plates 4 extrude the blade, achieving the effect of fixing the blade, and the limiting device 5 limits the two clamping plates 4, avoiding damage to the blade by the clamping plate 4, and finally the lifting hooks of the crane are hung on the lifting lugs of the main beam 1 to hoist and transport the main beam 1 and the blade.
[0027] Referring to Figures 1-4 The limiting device 5 comprises a threaded cylinder 51, the threaded cylinder 51 is installed on one side of one of the clamping plates 4, a screw rod 52 is threadedly connected in the interior of the threaded cylinder 51, one end of the screw rod 52 away from the threaded cylinder 51 is fixedly connected with a fixed block 53, and the other clamping plate 4 is fixedly connected with a fixed tube 54, wherein the interior dimension of the fixed tube 54 is matched with the size of the fixed block 53. Before it is necessary to fix the blade, the staff rotates the fixed block 53, the fixed block 53 rotates in the threaded cylinder 51 with the screw rod 52, the total length of the screw rod 52 and the threaded cylinder 51 changes, when matched with the blade, the staff stops rotating the fixed block 53, when the two clamping plates 4 are close to each other, the fixed block 53 at one end of the screw rod 52 is inserted into the interior of the fixed tube 54, with the continuous insertion of the fixed block 53, the space in the interior of the fixed tube 54 is continuously compressed, the air pressure in the interior of the fixed tube 54 becomes larger, the movement of the fixed block 53 and the clamping plate 4 is slowed down, when the surface of the clamping plate 4 is attached to the blade, one end of the fixed block 53 abuts against the inner wall of the fixed tube 54, achieving the effect of limiting the clamping plate 4, and the limiting device 5 achieves the effect of limiting the maximum displacement of the two clamping plates 4, avoiding the air cylinder 3 moving with the clamping plate 4 too hard, thus causing the blade to be damaged.
[0028] Referring to Figures 1-4As shown, the arc surface of the fixing block 53 is uniformly provided with a plurality of anti-skid grooves 55, and the plurality of anti-skid grooves 55 are distributed in a circle. By setting the anti-skid groove 55, the friction between the hands of the staff and the fixing block 53 is increased, and the staff is facilitated to move the fixing block 53. One end of the fixed tube 54 is provided with a slope 57, and the slope 57 is inclined to the inside of the fixed tube 54. By setting the slope 57, the fixing block 53 is inserted into the inside of the fixed tube 54, which is convenient for the staff. One end of the fixing block 53 is fixedly connected with a rubber pad 56, and the size of the rubber pad 56 is matched with the size of the fixing block 53. By setting the rubber pad 56, the effect of protecting the fixing block 53 is achieved, which avoids the collision between the fixing block 53 and the inner wall of the fixed tube 54, so as to avoid the damage of the fixing block 53.
[0029] Referring to Figures 1-4 As shown, the arc surface of the fixed tube 54 is provided with an auxiliary device 6, and the auxiliary device 6 includes a pressure relief pipe 61, which is fixedly connected to the arc surface of the fixed tube 54. The pressure relief pipe 61 communicates with the fixed tube 54, the inner wall of the pressure relief pipe 61 is fixedly connected with a spring 62, one end of the spring 62 is fixedly connected with a piston 63, the size of the piston 63 is matched with the inside size of the pressure relief pipe 61, and the arc surface of the pressure relief pipe 61 is provided with a pressure relief port 64. When the internal pressure of the fixed tube 54 is too large, the gas in the fixed tube 54 extrudes the piston 63, the piston 63 moves to the direction of the pressure relief port 64, the spring 62 deforms, and finally the piston 63 moves through the pressure relief port 64. After the pressure relief port 64, the gas in the fixed tube 54 is discharged through the pressure relief port 64, and when the internal pressure of the fixed tube 54 is small, the piston 63 moves back to the original place under the action of the reset force of the spring 62, which is convenient for next use. Through the auxiliary device 6, the effect of pressure relief of the gas in the fixed tube 54 is achieved, which avoids the case that the internal pressure of the fixed tube 54 is too large, so as to avoid the damage of the fixed tube 54.
[0030] Referring to Figures 1-4 As shown, one side of the piston 63 is fixedly connected with a pull rope 65, and the pull rope 65 is fixedly connected with a pull ring 66 at one end of the pressure relief pipe 61. When the fixing block 53 needs to be removed from the fixed tube 54, the staff pulls the pull rope 65 through the pull ring 66, and the pull rope 65 moves with the piston 63 through the pressure relief port 64, which is convenient for air to enter the inside of the fixed tube 54. When the fixing block 53 is removed from the fixed tube 54, the space in the fixed tube 54 is large, the gas in the fixed tube 54 is small, and the fixing block 53 cannot be removed.
[0031] Working principle: when the blade needs to be lifted, the worker rotates the fixed block 53 through the anti-skid groove 55, the fixed block 53 rotates with the screw rod 52 in the threaded cylinder 51, the total length of the screw rod 52 and the threaded cylinder 51 changes, when it is matched with the blade, the worker stops rotating the fixed block 53, then moves the main beam 1 to the blade, opens the air cylinder 3, the air cylinder 3 brings the two clamping plates 4 close to each other, one end of the fixed block 53 of the screw rod 52 is inserted into the inside of the fixed tube 54, as the fixed block 53 is continuously inserted, the space inside the fixed tube 54 is continuously compressed, the air pressure inside the fixed tube 54 becomes larger, the movement of the fixed block 53 and the clamping plate 4 is slowed down, when the surface of the clamping plate 4 is attached to the blade, one end of the fixed block 53 is pressed against the inner wall of the fixed tube 54 with the help of the rubber pad 56, the effect of limiting the clamping plate 4 is achieved, finally the two clamping plates 4 extrude the blade, the effect of fixing the blade is achieved, finally the lifting hook of the crane is hung on the lifting lug of the main beam 1, the main beam 1 and the blade are lifted, the effect of limiting the maximum displacement of the two clamping plates 4 is achieved through the limiting device 5, avoiding the air cylinder 3 moving with the clamping plate 4 too hard, which may cause damage to the blade.
[0032] When the air pressure inside the fixed tube 54 is too large, the gas inside the fixed tube 54 extrudes the piston 63, the piston 63 moves in the direction of the pressure relief port 64, the spring 62 deforms, finally the piston 63 moves through the pressure relief port 64, the gas inside the fixed tube 54 is discharged through the pressure relief port 64, when the air pressure inside the fixed tube 54 becomes smaller, under the action of the reset force of the spring 62, the piston 63 moves back to the original place, which is convenient for next use, when the fixed block 53 needs to be removed from the fixed tube 54, the worker pulls the pull rope 65 through the pull ring 66, the pull rope 65 brings the piston 63 to move through the pressure relief port 64, which is convenient for air to enter the inside of the fixed tube 54, avoiding the situation that the space inside the fixed tube 54 becomes larger when the fixed block 53 is removed from the fixed tube 54, the gas inside the fixed tube 54 is too small, the fixed block 53 cannot be removed, the effect of relieving the pressure of the gas inside the fixed tube 54 is achieved through the auxiliary device 6, avoiding the situation that the air pressure inside the fixed tube 54 is too large, which may cause damage to the fixed tube 54.
Claims
1. A horizontal single blade sling for a wind turbine generator, characterized by: Including the main girder (1), both ends of the main girder (1) are fixedly connected with two supports (2), wherein the main girder (1) can be placed on the ground by the support (2) to provide support to the whole, the upper surface of the main girder (1) is fixedly connected with an ear by a traction rope; The cylinder (3) is fixedly installed on one side of the support (2), and the output end of the cylinder (3) is fixedly connected with the clamping plate (4), wherein the section of the clamping plate (4) is L-shaped; The limiting device (5) is arranged on one side of the clamping plate (4), wherein the limiting device (5) can limit the maximum displacement of the two clamping plates (4).
2. A horizontal single blade sling for a wind turbine generator unit according to claim 1, characterized in that: The limiting device (5) includes a threaded cylinder (51) installed on one side of one of the clamping plates (4), a screw rod (52) threadedly connected inside the threaded cylinder (51), a fixed block (53) fixedly connected to one end of the screw rod (52) away from the threaded cylinder (51), and a fixed tube (54) fixedly connected to one side of the other clamping plate (4), wherein the inside dimension of the fixed tube (54) is adapted to the size of the fixed block (53).
3. A horizontal single blade sling for a wind turbine generator according to claim 2, characterized in that: The circular arc surface of the fixed block (53) is uniformly provided with a plurality of anti-skid grooves (55), and the plurality of anti-skid grooves (55) are circumferentially distributed.
4. A horizontal single blade sling for a wind turbine generator according to claim 2, characterized in that: One end of the fixed tube (54) is provided with an inclined slope (57), wherein the inclined slope (57) is inclined towards the inside of the fixed tube (54).
5. A horizontal single blade sling for a wind turbine generator according to claim 2, characterized in that: One end of the fixed block (53) is fixedly connected with a rubber pad (56), wherein the size of the rubber pad (56) is adapted to the size of the fixed block (53).
6. A horizontal single blade sling for a wind turbine generator according to claim 2, characterized in that: The circular arc surface of the fixed tube (54) is provided with an auxiliary device (6), the auxiliary device (6) includes a pressure relief pipe (61) fixedly connected to the circular arc surface of the fixed tube (54), wherein the pressure relief pipe (61) and the fixed tube (54) are in communication, the inner wall of the pressure relief pipe (61) is fixedly connected with a spring (62), one end of the spring (62) is fixedly connected with a piston (63), wherein the size of the piston (63) is adapted to the inside dimension of the pressure relief pipe (61), and the circular arc surface of the pressure relief pipe (61) is provided with a pressure relief port (64).
7. A horizontal single blade sling for a wind turbine generator unit according to claim 6, characterized in that: One side of the piston (63) is fixedly connected with a pull rope (65), and one end of the pull rope (65) is fixedly connected with a pull ring (66) through the pressure relief pipe (61).