Fan blade lifting appliance

Abstract

The utility model relates to a fan blade lifting appliance which comprises two main beams, each main beam is of a long-strip-shaped structure, the two ends and the middles of the two main beams are fixedly connected through reinforcing ribs, a left sliding groove and a right sliding groove are formed between the two main beams, and lifting frames and lifting hooks are installed in the two sliding grooves. The hanging bracket and the lifting hook can move left and right in the corresponding sliding grooves and are fixed to the main beam through locking bolts. Slings are arranged on the two hanging brackets, and the upper ends of the slings are connected with hoisting equipment; the lifting hook comprises a scissor clamp assembly and clamping plates, the upper end of the scissor clamp assembly is connected with the sliding groove, the clamping plates are symmetrically arranged on the front side and the rear side of the lower end of the scissor clamp assembly, and fan blades are clamped by the front clamping plate and the rear clamping plate through the scissor clamp assembly. The fan blade hoisting device can be flexibly adjusted according to the conditions of different fan blades, stably clamps the blades, safely and reliably finishes hoisting operation, and effectively improves the hoisting and mounting efficiency and quality of the fan blades.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of lifting appliances, in particular to a kind of fan blade lifting appliance, belong to lifting appliance equipment technical field. BACKGROUND

[0002] With the continuous development of wind power generation technology, the installation scale of wind turbine is increasingly expanding. As the key component of wind turbine, the fan blade is large in size, heavy in weight and special in shape, which needs special lifting appliance for handling operation in the process of production, transportation and installation. The traditional lifting appliance is simple in structure and poor in versatility, which is difficult to adapt to the lifting needs of different specifications of fan blades. For example, the lifting hook position of some lifting appliances is fixed, which cannot be flexibly adjusted according to the length and gravity center position of the blade, and is prone to cause uneven stress of the blade during lifting, resulting in shaking or even falling, which not only damages the blade, but also may cause serious safety accidents. In addition, when clamping the blade, some lifting appliances cannot provide stable and reliable clamping force, which is prone to cause displacement of the blade during lifting, affecting the accuracy and efficiency of installation, and is difficult to meet the efficient and safe construction requirements of modern wind power engineering. SUMMARY

[0003] The utility model mainly aims at the problems of poor versatility, unstable clamping and low lifting safety of existing lifting appliance, and provides a kind of fan blade lifting appliance.

[0004] The purpose of the utility model is mainly realized by the following scheme:

[0005] A kind of fan blade lifting appliance, comprising a main beam, the main beam is long strip structure, the main beam is equipped with two, and the two ends and middle part of two main beams are all fixedly connected by reinforcing rib, and left and right two sliding grooves are formed between two main beams, a lifting bracket and a lifting hook are installed in two sliding grooves, and the lifting bracket and the lifting hook can move left and right in the corresponding sliding groove, and the lifting bracket and the lifting hook are fixed on the main beam by locking bolt;Two lifting brackets are equipped with a sling, and the upper end of the sling is connected with lifting equipment;The lifting hook comprises a scissors clamp assembly and a clamping plate, the upper end of the scissors clamp assembly is connected with the sliding groove, the lower end of the scissors clamp assembly is symmetrically provided with clamping plate on front and back sides, and the two clamping plates are clamped to fan blade by scissors clamp assembly.

[0006] As preferred, the side wall of the front and rear two main beams is equipped with multiple waist type holes at the position corresponding to the sliding groove, and the locking bolt is used in cooperation with the waist type hole.

[0007] As preferred, the hanger comprises a hanger plate, a limiting part and a lifting ring, the front and rear sidewalls of the hanger plate are symmetrically provided with the limiting parts, the upper surface of the limiting part is in contact with the lower surface of the main beam, the middle part of the hanger plate is provided with a first fixing hole used in cooperation with the waist-shaped hole, the upper part of the hanger plate is provided with a mounting hole, the lower end of the lifting ring is movably mounted in the mounting hole through a pin shaft, and the lower end of the lifting rope passes through the middle part of the lifting ring.

[0008] As preferred, the scissor clamp assembly comprises a mounting plate, a first connecting rod, a second connecting rod, a first lifting rod and a second lifting rod, the middle part of the mounting plate is provided with a second fixing hole used in cooperation with the waist-shaped hole, the top of the first connecting rod and the second connecting rod are rotatably connected with the bottom of the mounting plate, the bottom of the first connecting rod and the second connecting rod respectively faces the front side and the rear side, the top of the first lifting rod is rotatably connected with the bottom of the first connecting rod, the top of the second lifting rod is rotatably connected with the bottom of the second connecting rod, the first lifting rod and the second lifting plate are cross arranged, and the middle part of the first lifting rod and the second lifting rod are rotatably connected through a rotating shaft.

[0009] As preferred, the bottom of the first lifting rod and the second lifting rod is inwardly extended with a bent part, the outer wall of the clamp plate is consistent with the inner wall of the bent part, and the clamp plate is fixedly connected with the inner wall of the bent part.

[0010] As preferred, the cross section of the clamp plate is in "L" type structure, and the inner wall of the clamp plate is provided with a buffer layer.

[0011] As preferred, the connecting part of the second connecting rod and the second lifting rod is rotatably connected with a limiting rod, the bottom of the limiting rod is provided with a hook part, and the sidewall of the first lifting plate is provided with a limiting column used in cooperation with the hook part.

[0012] Therefore, compared with the prior art, the utility model has the following advantages:

[0013] (1) The hook and the hanger of the utility model can move left and right in the sliding groove of the main beam, and are fixed through the waist-shaped hole and the locking bolt, can be flexibly adjusted according to the fan blades of different lengths and gravity center positions, are suitable for hoisting of fan blades of various specifications, and greatly improve the universality of the lifting appliance.

[0014] (2) The scissor clamp assembly of the utility model can stably clamp the fan blades through the linkage of the first connecting rod, the second connecting rod, the first lifting rod and the second lifting rod, and the clamp plate is in "L" type structure and the inner wall is provided with a buffer layer, which can effectively prevent the blade from sliding during clamping, and can also avoid damaging the surface of the blade.

[0015] (3) The two main beams of the utility model are connected through the reinforcing rib, the structure is stable, and can bear greater weight and stress in the hoisting process. Meanwhile, the limiting part of the lifting frame is in close contact with the main beam, the sling is connected with the lifting frame through the lifting ring, the connection between the whole lifting appliance and the lifting equipment is more stable and reliable, the risk of blade shaking and falling in the hoisting process is reduced, and the safety of hoisting operation is ensured;

[0016] (4) The utility model discloses when installing and adjusting the position of the lifting hook and the lifting frame, only need to loosen or tighten the locking bolt, can move easily, simple operation is convenient, can improve the hoisting and installation efficiency of the fan blade. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 It is the side view of the utility model;

[0020] Figure 4 It is the structural schematic view of the lifting hook in the utility model;

[0021] Figure 5 It is the structural schematic view of the lifting frame in the utility model.

[0022] Brief Description of Drawings: 1 - main beam, 2 - reinforcing rib, 3 - sliding groove, 4 - lifting frame, 5 - lifting hook, 6 - sling, 7 - scissor clip assembly, 8 - clamping plate, 9 - waist type hole, 10 - lifting plate, 11 - limiting part, 12 - lifting ring, 13 - first fixed hole, 14 - mounting hole, 15 - pin shaft, 16 - mounting plate, 17 - first connecting rod, 18 - second connecting rod, 19 - first lifting rod, 20 - second lifting rod, 21 - second fixed hole, 22 - bending part, 23 - limiting rod, 24 - bent hook part, 25 - limiting column. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be further explained in detail below by specific embodiments, and the accompanying drawings are combined. Figures 1-5 It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of variation and / or change of the utility model will fall within the protection scope of the utility model.

[0024] In the utility model, if not specified, all the parts, percentage is weight unit, the equipment and raw material etc. that adopts can be bought from market or is common in the art. The method in the following embodiment, if no special instructions, are the conventional method in the art. The components or equipment in the following embodiment if no special instructions, are general standard parts or the components that the person skilled in the art knows, and its structure and principle are that the person skilled in the art can know through technical manual or through conventional experimental method obtains.

[0025] Example 1:

[0026] As Figure 1 、 2 , 3 shows, the utility model provides a technical scheme, a fan blade lifting appliance, including two long strip structure's main girder 1, two main girders 1 both ends and middle part are all fixedly connected through reinforcing rib 2, and reinforcing rib 2 and the side wall between main girder 1 are welded fixedly, and two main girders 1 between form have left and right two sliding slots 3, the sliding slot 3 of left side and the sliding hook 5 in the sliding slot of right side are all installed with lifting frame 4, and lifting frame 4 and hook 5 can move left and right in corresponding sliding slot 3, and lifting frame 4 and hook 5 are fixed on main girder 1 by locking bolt, two lifting frames 4 are all connected with sling 6, and the upper end of sling 6 is connected with hoisting equipment, and the movement of lifting appliance is driven by hoisting equipment.

[0027] The above-mentioned hook 5 is composed of scissors clip assembly 7 and clamping plate 8, the upper end of scissors clip assembly 7 is connected with sliding slot 3, the lower end of scissors clip assembly 7 is symmetrically connected with clamping plate 8 on the front and back two sides, and the clamping of two clamping plates 8 on the front and back of fan blade is realized by scissors clip assembly 7.

[0028] The side wall of the above-mentioned front and back main girder 1 and the position corresponding to sliding slot 3 are all provided with multiple horizontally arranged waist type holes 9, locking bolt is used in conjunction with waist type hole 9, and the fixing of lifting frame 4 and hook 5 is carried out through waist type hole 9 and locking bolt, and the position can be adjusted through waist type hole 9.

[0029] Example 2:

[0030] As Figure 1 、 5As shown, the utility model provides another technical solution, a wind turbine blade hanger, which is different from Example 1 in that the above-mentioned hanger 4 is composed of a hanger plate 10, a limiting portion 11 and a lifting ring 12. The front and rear side walls of the hanger plate 10 are in contact with the front and rear inner walls of the slide 3, and the lower parts of the front and rear side walls of the hanger plate 10 are symmetrically welded with transverse limiting portions 11. The upper surface of the limiting portion 11 is in contact with the lower surface of the main beam 1. The middle part of the hanger plate 10 is penetrated by a first fixing hole 13 used in conjunction with the waist-shaped hole 9. The locking bolt passes through the waist-shaped hole 9 and the first fixing hole 13 to fix the hanger 4. The upper part of the hanger plate 10 is provided with a mounting hole 14, and the mounting hole 14 adopts a transverse waist-shaped hole. The lower end of the lifting ring 12 is movably installed in the mounting hole 14 through a pin shaft 15, and the lower end of the sling 6 passes through the middle part of the lifting ring 12.

[0031] Example 3:

[0032] like Figure 1 、 4 As shown, the utility model provides another technical solution, a fan blade hanger, which is different from the embodiment 1 in that the above-mentioned scissor clamp assembly 7 is composed of a mounting plate 16, a first connecting rod 17, a second connecting rod 18, a first hanging rod 19 and a second hanging rod 20. The mounting plate 16 adopts an "I"-shaped structure, the middle of which can be slidably connected to the slide 3, and the front and rear side walls of the middle of the mounting plate 16 are in contact with the inner wall of the slide 3. The middle of the mounting plate 16 is provided with a second fixing hole 21 for use with the waist-shaped hole 9. The first connecting rod 17 and the second connecting rod 18 are The tops are rotatably connected to the bottom of the mounting plate 16 via a rotating shaft, and the bottoms of the first connecting rod 17 and the second connecting rod 18 are respectively facing the front and rear sides. In this embodiment, the first connecting rod 17 faces the rear side, and the second connecting rod 18 faces the front side. The top of the first suspension rod 19 is rotatably connected to the bottom of the first connecting rod 17 via a rotating shaft, and the top of the second suspension rod 20 is rotatably connected to the bottom of the second connecting rod 18 via a rotating shaft. The first suspension rod 19 and the second suspension plate 10 are cross-arranged, and the middle parts of the first suspension rod 19 and the second suspension rod 20 are rotatably connected via a rotating shaft.

[0033] Specifically, the bottoms of the first hanger 19 and the second hanger 20 both extend inward and are integrally provided with a bending portion 22. The outer wall of the splint 8 is consistent in shape with the inner wall of the bending portion 22, and the splint 8 is fixedly welded to the inner wall of the bending portion 22. In this embodiment, the cross-section of the splint 8 is an "L"-shaped structure, which is convenient for clamping the fan blades, and a buffer layer is bonded to the inner wall of the splint 8. In this embodiment, the buffer layer is made of rubber material.

[0034] Specifically, the connecting part of the second connecting rod 18 and the second suspender 20 is rotatably connected with a limiting rod 23 through a rotating shaft, the bottom of the limiting rod 23 is integrally provided with a hook part 24, the side wall of the first suspender 10 is fixedly welded with a limiting column 25 matched with the hook part 24, and when the lifting appliance is in an idle state, the hook part 24 hooks the limiting column 25, so that the first suspender 19 and the second suspender 20 are prevented from moving downward.

[0035] The lifting appliance for fan blades provided by the utility model, in use, first, according to the length and the gravity center position of the fan blade, the lifting hook 5 and the lifting frame 4 are moved to the appropriate positions in the sliding groove 3 of the main beam 1, the locking bolt is passed through the first fixing hole 13 of the suspender 10 and the waist-shaped hole 9 of the main beam 1, the locking bolt is tightened, the lifting frame 4 is fixed on the main beam 1, and the second fixing hole 21 of the mounting plate 16 of the scissors clamp assembly is aligned with the waist-shaped hole 9 of the main beam 1, the locking bolt is used for fixing, and the lifting hook 5 is fixed on the main beam 1; then the upper end of the sling 6 is connected with the hoisting equipment, the lower end is passed through the middle part of the lifting ring 12, then the lifting ring 12 is installed in the mounting hole 14 of the suspender 10 through the pin shaft 15; next, the hoisting equipment is operated to move the lifting appliance to the upper part of the fan blade, at the moment, the lower parts of the first suspender 19 and the second suspender 20 are located below the fan blade, the limiting rod 23 is loosened, the scissors clamp assembly is operated, the lifting appliance is pulled upward, under the linkage action of the first connecting rod 17, the second connecting rod 18, the first suspender 19 and the second suspender 20, the bottom of the first suspender 19 and the second suspender 20 is inwards retracted, and the clamping plate 8 is driven to clamp the fan blade; finally, the hoisting equipment is started, and during the lifting, the lifting frame 4 and the lifting hook 5 are in close contact with the main beam 1, and the stability of the whole lifting appliance structure can ensure that the fan blade is smoothly lifted to the designated position for installation.

[0036] It should be understood that the embodiments are only used for illustrating the utility model and are not used for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the claims of the application.

Claims

1. A wind turbine blade hoist comprising a main beam (1) in the form of a long strip structure, characterised in that: Two main beams (1) are arranged, and the two ends and the middle part of the two main beams (1) are fixedly connected through reinforcing ribs (2), and left and right two sliding grooves (3) are formed between the two main beams (1), the two sliding grooves (3) are provided with hangers (4) and hooks (5), the hangers (4) and the hooks (5) can move left and right in the corresponding sliding grooves (3), and the hangers (4) and the hooks (5) are fixed on the main beams (1) through locking bolts; two hangers (4) are provided with lifting ropes (6), and the upper ends of the lifting ropes (6) are connected with hoisting equipment; the hook (5) comprises a scissor clamp assembly (7) and a clamping plate (8), the upper end of the scissor clamp assembly (7) is connected with the sliding groove (3), and the lower end of the scissor clamp assembly (7) is provided with the clamping plate (8) on the front and back sides in a symmetrical manner, and the two clamping plates (8) are clamped to the fan blade through the scissor clamp assembly (7).

2. A wind turbine blade hoist according to claim 1, characterised in that: The side walls of the front and back two main beams (1) are provided with a plurality of waist-shaped holes (9) at positions corresponding to the sliding grooves (3), and the locking bolts are used in cooperation with the waist-shaped holes (9).

3. A wind turbine blade hoist according to claim 2, wherein: The hanger (4) comprises a hanger plate (10), a limiting part (11) and a lifting ring (12), the front and back side walls of the hanger plate (10) are provided with the limiting parts (11) in a symmetrical manner, the upper surface of the limiting part (11) is in contact with the lower surface of the main beam (1), the middle part of the hanger plate (10) is provided with a first fixing hole (13) used in cooperation with the waist-shaped hole (9), the upper part of the hanger plate (10) is provided with a mounting hole (14), the lower end of the lifting ring (12) is movably mounted in the mounting hole (14) through a pin shaft (15), and the lower end of the lifting rope (6) passes through the middle part of the lifting ring (12).

4. A wind turbine blade hoist according to claim 2, characterised in that: The scissor clamp assembly (7) comprises a mounting plate (16), a first connecting rod (17), a second connecting rod (18), a first lifting rod (19) and a second lifting rod (20), the middle part of the mounting plate (16) is provided with a second fixing hole (21) used in cooperation with the waist-shaped hole (9), the top of the first connecting rod (17) and the second connecting rod (18) is rotatably connected with the bottom of the mounting plate (16), the bottom of the first connecting rod (17) and the second connecting rod (18) faces the front side and the back side respectively, the top of the first lifting rod (19) is rotatably connected with the bottom of the first connecting rod (17), the top of the second lifting rod (20) is rotatably connected with the bottom of the second connecting rod (18), the first lifting rod (19) and the second lifting rod (20) are cross arranged, and the middle parts of the first lifting rod (19) and the second lifting rod (20) are rotatably connected through a rotating shaft.

5. A wind turbine blade hoist according to claim 4, wherein: The bottom of the first lifting rod (19) and the second lifting rod (20) is provided with a bending part (22) extending inward, the outer wall of the clamping plate (8) is consistent with the inner wall of the bending part (22), and the clamping plate (8) is fixedly connected to the inner wall of the bending part (22).

6. A wind turbine blade hoist according to claim 5, wherein: The cross section of the clamping plate (8) is in "L" type structure, and the inner wall of the clamping plate (8) is provided with a buffer layer.

7. A wind turbine blade hoist according to claim 6, wherein: The connecting place of the second connecting rod (18) and the second boom (20) is rotationally connected with a limiting rod (23), the bottom of the limiting rod (23) is provided with a hook part (24), and the side wall of the first boom (19) is provided with a limiting column (25) matched with the hook part (24).

Images