An auxiliary device for hoisting a wind power blade

Abstract

The present invention belongs to the technical field of wind power generation, and specifically is a wind power generation blade hoisting auxiliary device, including a combination head and a base block, wherein the combination head and the base block are fitted. The present invention detects the sensing point on the combination head by starting the laser radar located on the base block. When the distances detected in different directions are all greater than the threshold, the hoisting equipment is required to move the combination head closer. When the distance detected by the laser radar in a certain direction is less than the threshold, the rope collection component is preferentially started to shorten the distance between the base block and the combination head, and the electromagnet in the corresponding direction is started in combination with the distance detected by the laser radar in different directions, and then the electromagnet guides the adsorption ring so that the combination head is completely fitted to the base block along the construction inclination angle, which is beneficial to the auxiliary installation of wind power blades and wind turbines in mountainous areas and at sea, and is beneficial to complete the installation of wind blades and wind turbines by adapting to the construction inclination angle.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly to an auxiliary device for hoisting wind power generation blades. Background Art

[0002] The design of the blades of a wind turbine directly affects the conversion efficiency of wind energy and directly affects its annual power generation, which is an important part of wind energy utilization.

[0003] Currently, the installation of existing wind power blades is completed in combination on the ground. After installing three wind power blades through a combination head, they are hoisted and connected to the shaft body of the wind power generator to form an overall hoisting. Both the overall hoisting and the wind power tower body adopt a vertical method. However, with the construction of wind power, there are fewer and fewer places where wind power can be built on flat ground, and more and more wind power construction is carried out in mountainous areas and at sea. This has led to the need for an inclination angle, generally 1° - 5°, when installing the overall hoisting and the wind power tower body. This has brought difficulties to the hoisting work. When hoisting equipment, it is difficult to form an effective angle for the combination head with three wind power blades to be adaptively installed. Often, the bottoms of the two are aligned and closed, but there is still a gap at the top. If the thrust is entirely applied by the hoisting equipment, it is easy to cause installation risks for the combination of the fan blades and the wind power generator.

[0004] Therefore, we propose an auxiliary device for hoisting wind power generation blades, which is beneficial for assisting the installation of wind power blades and wind power generators in mountainous areas and at sea, and is beneficial for adapting to the construction inclination angle to complete the installation of wind power blades and wind power generators. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an auxiliary device for hoisting wind power generation blades to solve the problems existing in the above-mentioned background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An auxiliary device for hoisting wind power generation blades includes a combination head and a base block. The combination head and the base block are fitted together so that the fixed sleeve in the combination head is connected to the generator shaft body in the base block. Multiple rope-receiving components are respectively installed at various positions on the inner wall of the base block. The combination head is provided with an adapter block corresponding to the rope-receiving components, and a tightening hole for tying the rope body of the rope-receiving component is opened on the adapter block.

[0007] The outer wall of the base block is provided with a traction ring in the shape of an annular depression. A plurality of electromagnets are installed at various positions along the ring on the back of the traction ring. The outer wall of the combination head is provided with an adsorption ring in the shape of an annular protrusion adapted to the traction ring. The magnetic force generated by the electromagnets engages the adsorption ring through the traction ring.

[0008] Lidar sensors are installed at various positions on the inner wall of the base block, and induction points corresponding to the positions of the lidar sensors are arranged on the outer wall of the combined head. The lidar sensors detect the distance and angular deviation from the induction points.

[0009] A rope winding component located inside the base block pulls the combined head. When the lidar sensor detects that the distance from the induction point reaches the threshold, the lidar sensor detects the distance and angle from the induction point, and the rope winding components and electromagnets in different directions are activated respectively.

[0010] Furthermore: The total number of rope winding components is an even number. Every two groups of rope winding components are respectively located at two symmetric points on the inner wall of the base block. The rope winding motor of the rope winding component is connected with a rope reel. A rope body is wound around the outer wall of the rope reel. The rope body passes through the rope winding hole of the adapter block and is knotted. The rope winding motor has overload protection.

[0011] Furthermore: When the lidar sensor in any direction detects that the distance and angle are greater than the threshold, the rope winding component and the electromagnet in the corresponding direction are activated.

[0012] Furthermore: A reinforcement ring is fixed on the outer wall of the combined head. Reinforcement holes are arranged around the outer wall of the reinforcement ring. Reinforcement screw holes are arranged on the outer wall of the base block corresponding to the positions of the reinforcement holes.

[0013] Furthermore: A calibration groove is formed on one side of the traction ring. A spring cylinder passes through a slider sliding inside the calibration groove. A positioning point is arranged on the outer wall of the combined head corresponding to the calibration groove. The spring cylinder expands and engages with the positioning point.

[0014] Furthermore: An oscillating arm assembly is installed on the outer wall of the generator shaft body. A concave fixing groove is formed on the generator shaft body. A hoop of the oscillating arm assembly is clamped on the outer wall of the generator shaft body. A clamping block corresponding to the fixing groove is arranged on the inner wall of the hoop. A support arm is connected to the outer wall of the hoop. One end of the support arm at the bottom is connected to the spring cylinder.

[0015] Furthermore: When the distance measured by the lidar sensor is less than the threshold, but there is an angular deviation in the lidar sensor detecting the induction point, the spring cylinder is correspondingly inserted into the positioning point, and the angle of the combined head is adjusted by the spring cylinder along the circular correction.

[0016] Furthermore: Three blade mounting grooves are evenly formed around the outer wall of the combined head. Wind power blades are nested and installed inside the blade mounting grooves. The wind power blades rotate with the fixed sleeve.

[0017] Compared with the prior art, the technical effects and advantages of the present invention:

[0018] 1) The lifting auxiliary device for wind power generation blades of the present invention, through the settings of lidar, induction points, rope retracting components and electromagnets, starts the lidar on the base block to detect the induction points on the combined head. When the distances detected in different directions are all greater than the threshold value, the lifting equipment is required to bring the combined head closer. When the distance detected by the lidar in a certain direction is less than the threshold value, the rope retracting component is preferentially started to shorten the distance between the base block and the combined head. Combining the distances detected by the lidars in different directions, the electromagnet in the corresponding direction is started for the direction with the largest distance difference. Then, the electromagnet guides the adsorption ring, so that the combined head completely fits the base block along the construction inclination angle, which is beneficial to assist the installation of wind power blades and wind turbines during installation in mountainous areas and at sea, and is beneficial to adapting to the construction inclination angle to complete the installation of wind power blades and wind turbines.

[0019] 2) The lifting auxiliary device for wind power generation blades of the present invention, through the settings of lidar, induction points and swing arm components, when the base block and the combined head are completely fitted, there will still be deviations between the reinforcement holes of the base block and the reinforcement screw holes of the combined head. Slide the spring cylinder in the calibration groove so that the positioning card of the spring cylinder corresponding to the combined head is inserted. Start the generator shaft manually or by starting the generator, so that the combined head has an angular deviation along the arc-shaped calibration groove until the reinforcement holes and the reinforcement screw holes are aligned, which is beneficial to assisting in aligning the fixing holes during the installation of wind power blades and wind turbines, and is beneficial to avoiding the problem that it is difficult to insert the fixing screw due to the deviation between the reinforcement holes and the reinforcement screw holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the base block of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of the base block and the swing arm assembly of the present invention;

[0023] Figure 4 is a schematic diagram of the internal structure of the base block of the present invention;

[0024] Figure 5 is a schematic diagram of the structure of the swing arm assembly and the generator shaft of the present invention;

[0025] Figure 6 is a schematic diagram of the structure of the swing arm assembly of the present invention;

[0026] Figure 7 is a schematic diagram of the structure of the electromagnet of the present invention;

[0027] Figure 8 is a schematic diagram of the structure of the rope retracting component of the present invention.

[0028] The reference numerals are: 1, combined head; 11, reinforcement screw hole; 12, induction point; 13, positioning point; 2, reinforcement ring; 21, adapter block; 22, tightening hole; 3, blade mounting groove; 4, adsorption ring; 5, fixing sleeve; 6, traction ring; 61, calibration groove; 62, electromagnet; 7, base block; 71, reinforcement hole; 72, lidar; 73, rope winding component; 731, rope body; 732, rope reel; 733, rope winding motor; 8, generator shaft body; 81, fixing groove; 9, swing arm assembly; 91, hoop; 92, clamping block; 93, support arm; 94, spring cylinder; 95, slider. Detailed implementation manners

[0029] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of the respective structures described in the following embodiments are merely examples, and the structures involved in the present invention are not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0030] Embodiment:

[0031] Please refer to Figure 1-8 , the present invention provides a technical solution: a wind power generation blade hoisting auxiliary device, including a combined head 1 and a base block 7. The combined head 1 and the base block 7 are attached, so that the fixing sleeve 5 in the combined head 1 is connected to the generator shaft body 8 in the base block 7;

[0032] Three blade mounting grooves 3 are evenly formed around the outer wall of the combined head 1, and a wind power generation blade is nested inside the blade mounting groove 3. The wind power generation blade rotates with the fixing sleeve 5. In the existing installation method, the three wind power generation blades are installed in the blade mounting grooves 3 corresponding to the combined head 1 on the ground, and the hoisting equipment hoists the whole together for installation.

[0033] Wherein, a reinforcement ring 2 is fixed on the outer wall of the combined head 1, and reinforcement holes 71 are arranged around the outer wall of the reinforcement ring 2. Reinforcement screw holes 11 are arranged at the positions corresponding to the reinforcement holes 71 on the outer wall of the base block 7; after the combined head 1 and the base block 7 are attached, a fixing screw needs to pass through the reinforcement screw holes 11 and the reinforcement holes 71 and be fixed by bolts.

[0034] It should be noted that during installation in mountainous areas and at sea, due to the inclination angle, when the combined head 1 and the base block 7 are attached, often the bottoms of the two have been attached, but the tops of the two are still open due to the inclination angle;

[0035] Multiple sets of rope winding components 73 are respectively installed at various positions on the inner wall of the base block 7. The combined head 1 is provided with an adapter block 21 corresponding to the rope winding components 73, and a tightening hole 22 for tying the rope body 731 of the rope winding components 73 is formed on the adapter block 21. The rope winding components 73 are used to pull the combined head 1 in the hoisting state, reduce the sway of the combined head 1 in the hoisting state, and keep the bottom of the combined head 1 and the base block 7 in continuous contact when the rope body 731 is wound by the rope winding components 73;

[0036] The total number of the rope winding components 73 is an even number. In the preferred case, the number of the rope winding components 73 should be no less than 4 groups. The 4 groups of rope winding components are respectively arranged at four positions of lower left, upper left, lower right and upper right. Every two groups of rope winding components 73 are respectively located at two symmetric points on the inner wall of the base block 7. Through the symmetrically arranged rope winding components 73, the traction of the rope winding components 73 on the combined head 1 during winding is more uniform. The rope winding motor 733 of the rope winding components 73 is connected with a rope reel 732. The rope body 731 is wound around the outer wall of the rope reel 732, and the rope body 731 passes through the rope winding hole of the adapter block 21 to tie a knot. The rope winding motor 733 has overload protection. When a strong wind blows, the rope body 731 is tightened and the rope winding motor 733 is overloaded. Then, the rope winding motor 733 can be stopped from reversing, so that the rope reel 732 reverses to relax the rope body 731, avoiding the situation that the rope winding motor 733 is overheated;

[0037] A traction ring 6 in the shape of an annular depression is arranged on the outer wall of the base block 7. A plurality of electromagnets 62 are installed at various positions along the ring on the back of the traction ring 6. The distribution of the plurality of electromagnets 62 is in a U shape. An adsorption ring 4 in the shape of an annular protrusion adapted to the traction ring 6 is arranged on the outer wall of the combined head 1. The magnetic force generated by the electromagnets 62 engages the adsorption ring 4 through the traction ring 6. When the base block 7 and the combined head 1 are close enough, the electromagnets 62 are started, so that the protruding adsorption ring 4 of the combined head 1 is engaged with the corresponding concave traction ring 6 of the base block 7 under the traction of the magnetic force. Through the concave-convex structure and the inclination angle existing between the combined head 1 and the base block 7 itself, the combined head 1 is relatively stable. However, there is still a problem that there is a deviation between the reinforcement hole 71 and the reinforcement screw hole 11.

[0038] Lidar sensors 72 are installed at four positions on the inner wall of the base block 7. The four positions can refer to the four directions of up, down, left and right. Induction points 12 corresponding to the positions of the lidar sensors 72 are arranged on the outer wall of the combined head 1. The distance and angle deviation between the lidar sensors 72 and the induction points 12 are detected by the lidar sensors 72, and the four-point distance between the base block 7 and the combined head 1 is detected by the lidar sensors 72 at four positions;

[0039] When the distance and angle detected by any one of the lidar sensors 72 are greater than the threshold value, the corresponding rope winding components 73 and electromagnets 62 are started; in actual situations, after their bottoms are in complete contact, there are still distance differences in the upper, left and right directions.

[0040] The rope retracting component 73 located inside the base block 7 pulls the combined head 1. When the lidar 72 detects that the distance to the induction point 12 reaches the threshold, the lidar 72 detects the distance and angle to the induction point 12, and activates the rope retracting components 73 and the electromagnets 62 in different directions respectively. At the same time, the lidar 72 detects the angle of deviation of the induction point 12 from the horizontal line, and there are situations of being too high or too low, and then notifies the lifting equipment to make corresponding adjustments to the height of the combined head 1.

[0041] By activating the rope retracting components 73 in the upper left and upper right directions to tighten the distance between the base block 7 and the combined head 1, and at the same time activating the electromagnet 62, the electromagnet 62 then guides the adsorption ring 4, so that the combined head 1 completely fits the base block 7 along the construction inclination angle.

[0042] In another embodiment:

[0043] Among them, the ranging distance of the lidar 72 is less than the threshold, and there is a deviation in the angle detected by the lidar 72 for the induction point 12. The spring cylinder 94 correspondingly snaps into the positioning card, and the spring cylinder 94 adjusts the angle of the combined head 1 along the annular correction.

[0044] When the bottom is aligned, the upper lidar 72 detects the induction point 12. When the detected distance is less than the threshold and there is a deviation in the angle detected by the lidar 72 for the induction point 12, it means that the reinforcement holes 71 and the reinforcement screw holes 11 are staggered, and the angle of the combined head 1 needs to be adjusted to facilitate the installation of the subsequent fixing screws.

[0045] Among them, a calibration groove 61 is provided on one side of the traction ring 6. A spring cylinder 94 passes through a sliding block 95 inside the calibration groove 61. A positioning point is provided on the outer wall of the combined head 1 corresponding to the position of the calibration groove 61. The spring cylinder 94 expands and engages with the positioning point. The calibration groove 61 is arc-shaped, and its arc is the same as the arc part of the traction ring 6, and the spring cylinder 94 expands and engages with the positioning point.

[0046] Among them, a swing arm assembly 9 is installed on the outer wall of the generator shaft body 8. By pushing the spring cylinder 94 or knocking through the swing arm assembly 9, the spring cylinder 94 is guided to deflect the combined head 1 along an arc to form an angle.

[0047] When there is a large staggered gap between the reinforcement hole 71 and the reinforcement screw hole 11, a concave fixing groove 81 can be provided in the generator shaft body 8. A hoop 91 of the swing arm assembly 9 is clamped on the outer wall of the generator shaft body 8. A clamping block 92 corresponding to the fixing groove 81 is arranged on the inner wall of the hoop 91. An arm 93 is connected to the outer wall of the hoop 91. The bottom of the arm 93 is connected to one end of a spring cylinder 94. By using the short-term start of the generator, a push is provided by the shaft body of the generator, so that the spring cylinder 94 guides the combined head 1 to deflect at an angle along an arc, avoiding the ineffective role of manual guidance when the gap is large.

[0048] After the base block 7 and the combined head 1 are completely fitted, there will still be a deviation between the reinforcement hole 71 of the base block 7 and the reinforcement screw hole 11 of the combined head 1. Slide the spring cylinder 94 in the calibration groove 61 so that the positioning block of the spring cylinder 94 corresponding to the combined head 1 is inserted. Start the generator shaft body 8 manually or by starting the generator, so that the combined head 1 deflects at an angle along the arc-shaped calibration groove 61 until the reinforcement hole 71 and the reinforcement screw hole 11 are aligned.

[0049] The working principle in the embodiment of the present invention:

[0050] Three blade mounting grooves 3 are evenly arranged around the outer wall of the combined head 1. Wind power blades are nested and installed inside the blade mounting grooves 3. The three wind power blades are installed corresponding to the blade mounting grooves 3 of the combined head 1 on the ground, and the hoisting equipment hoists the whole together for installation.

[0051] The distance and angular deviation between the lidar 72 and the induction point 12 are detected. The four-point distance between the base block 7 and the combined head 1 is detected by the lidar 72 in four directions;

[0052] When the distance and angle detected by the lidar 72 in any direction are greater than the threshold value, the rope winding component 73 and the electromagnet 62 in the corresponding direction are started.

[0053] Through the symmetrically arranged rope winding components 73, the traction of the combined head 1 by the rope winding components 73 during winding is more uniform. The rope winding motor 733 of the rope winding component 73 is connected with a rope reel 732. A rope body 731 is wound around the outer wall of the rope reel 732. The rope body 731 passes through the rope winding hole of the adapter block 21 and is knotted. The rope winding motor 733 has overload protection. When there is a strong gust of wind, the rope body 731 is tightened and the rope winding motor 733 is overloaded. Then the rope winding motor 733 can be stopped from reversing, so that the rope reel 732 can be reversed to relax the rope body 731;

[0054] By starting the rope winding components 73 in the upper left and upper right directions to tighten the distance between the base block 7 and the combined head 1, and at the same time starting the electromagnet 62, the electromagnet 62 then guides the adsorption ring 4, so that the combined head 1 completely fits the base block 7 along the construction inclination angle.

[0055] After bottom alignment, the lidar 72 above detects the sensing points 12. When the detected distance is less than the threshold and there is a deviation in the angle of the lidar 72 detecting the sensing points 12, it indicates that the reinforcement holes 71 and the reinforcement screw holes 11 are staggered, and the angle of the combination head 1 needs to be adjusted;

[0056] A concave fixing groove 81 is formed in the generator shaft body 8. A hoop 91 of the swing arm assembly 9 is engaged with the outer wall of the generator shaft body 8. A clamping block 92 corresponding to the fixing groove 81 is arranged on the inner wall of the hoop 91. An arm 93 is connected to the outer wall of the hoop 91. The bottom of the arm 93 is connected to one end of a spring cylinder 94. By using the short-term start of the generator, a push is provided by the shaft body of the generator, so that the spring cylinder 94 guides the combination head 1 to deflect at an angle along an arc.

[0057] The foregoing shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for hoisting a wind power blade, comprising a combined head (1) and a base block (7). The combined head (1) and the base block (7) are fitted together so that the fixed sleeve (5) in the combined head (1) is connected to the generator shaft body (8) in the base block (7). It is characterized in that: On the inner wall of the base block (7) in all directions, multiple sets of rope winding components (73) are respectively installed. The combined head (1) is provided with an adapter block (21) corresponding to the rope winding components (73), and a tightening hole (22) for tying the rope body (731) of the rope winding components (73) is formed on the adapter block (21). On the outer wall of the base block (7), a traction ring (6) in the shape of an annular depression is provided. On the back of the traction ring (6), a plurality of electromagnets (62) are installed along the ring in all directions. On the outer wall of the combined head (1), an adsorption ring (4) in the shape of an annular protrusion adapted to the traction ring (6) is provided. The magnetic force generated by the electromagnets (62) engages the adsorption ring (4) through the traction ring (6). On the inner wall of the base block (7) in all directions, lidar sensors (72) are installed. On the outer wall of the combined head (1), induction points (12) corresponding to the positions of the lidar sensors (72) are provided. The lidar sensors (72) detect the distance and angular deviation from the induction points (12). The combined head (1) is pulled by the rope winding components (73) located inside the base block (7). When the lidar sensors (72) detect that the distance to the induction points (12) reaches the threshold, the lidar sensors (72) detect the distance and angle to the induction points (12), and the rope winding components (73) and electromagnets (62) in different directions are respectively activated.

2. The auxiliary device for hoisting a wind power blade according to claim 1, characterized in that: The total number of the rope winding components (73) is an even number. Every two sets of rope winding components (73) are respectively located at two symmetric points on the inner wall of the base block (7). The rope winding motors (733) of the rope winding components (73) are connected with rope reels (732). The rope body (731) is wound around the outer wall of the rope reels (732). The rope body (731) passes through the rope winding holes of the adapter blocks (21) to tie a knot. The rope winding motors (733) have overload protection.

3. The auxiliary device for hoisting a wind power blade according to claim 1, wherein: When the lidar sensors (72) in any direction detect that the distance and angle are greater than the threshold, the rope winding components (73) and electromagnets (62) in the corresponding direction are activated.

4. The auxiliary device for hoisting a wind power blade according to claim 1, characterized in that: A reinforcing ring (2) is fixed on the outer wall of the combined head (1). Reinforcing holes (71) are arranged in a ring around the outer wall of the reinforcing ring (2). Reinforcing screw holes (11) are provided on the outer wall of the base block (7) at positions corresponding to the reinforcing holes (71).

5. The auxiliary device for hoisting a wind power blade according to claim 1, characterized in that: On one side of the traction ring (6), a calibration groove (61) is formed. A spring cylinder (94) passes through a sliding block (95) sliding inside the calibration groove (61). A positioning point (13) corresponding to the calibration groove (61) is provided on the outer wall of the combined head (1). The spring cylinder (94) expands to engage the positioning point (13).

6. The auxiliary device for hoisting a wind power blade according to claim 5, characterized in that: On the outer wall of the generator shaft body (8), a swing arm assembly (9) is installed. A recessed fixing groove (81) is formed on the generator shaft body (8). A hoop (91) of the swing arm assembly (9) is engaged with the outer wall of the generator shaft body (8). A clamping block (92) corresponding to the fixing groove (81) is provided on the inner wall of the hoop (91). A support arm (93) is connected to the outer wall of the hoop (91). One end of the support arm (93) at the bottom is connected to the spring cylinder (94).

7. An auxiliary device for hoisting a wind power blade according to claim 6, characterized in that: The ranging distance of the lidar (72) is less than the threshold value, and there is a deviation in the angle of the detection induction point (12) of the lidar (72). The spring cylinder (94) is snapped into the corresponding positioning point (13), and the angle of the combined head (1) is adjusted by the spring cylinder (94) along the annular correction.

8. The auxiliary device for hoisting a wind power blade according to claim 1, characterized in that: Three blade mounting grooves (3) are evenly arranged around the outer wall of the combined head (1). Wind power blades are nested and installed inside the blade mounting grooves (3), and the wind power blades rotate with the fixed sleeve (5).

Images