CN103303787B - Clamping device for lifting assembled shear web plates in wind turbine blade - Google Patents

Abstract

The invention discloses a clamping device for lifting assembled shear web plates in a wind turbine blade, which belongs to the technical field of lifting clamps for megawatt wind turbine blades. A left clamp (2) and a right clamp (3), which have the same structures, are connected with each other through a center shaft (10) to form an X-shaped structure; a vertical beam (1) and a cross beam (4) form a middle balance supporting arm with a T-shaped structure; a left supporting rod (5) and a right supporting rod (5) are arranged at two ends of the cross beam (4) and are connected with the cross beam (4) to form a rotating supporting structure through shafts (6); the shear web plate clamping device is kept under a static structure posture by a spring (7). The inner assembled shear web plate clamping device provided by the invention can lift and mount the assembled shear web plates in a balanced manner and guarantees the assembling technical sizes of the shear web plates; the deformation of the web plates is alleviated to the maximum extent; the production efficiency is improved; the quality of the blade is guaranteed; the clamping device is simple in structure and convenient to use and can be quickly mounted and dismounted in a low position.

Description

A clamping device for lifting and transporting the assembled shear web inside the blade of wind power generation

technical field

The invention belongs to the technical field of hoisting fixtures for megawatt wind power generation blades, and mainly relates to a clamping device for hoisting the assembled shear web inside the wind power generation blades.

Background technique

The shear web is an internal structure to improve the shear strength of the wind power blade. Generally, two shear webs are preformed and then installed and fixed inside the wind power blade according to specific design requirements.

In the prior art, there are several methods for hoisting and installing the shear webs inside the blades of wind power generation: 1. Lift and install the shear webs one by one by using the lifting fixture; 2. Use the lifting fixture to lift the two shear webs Simultaneous lifting and installation; 3. After simple assembly of the two shear webs in advance, use lifting fixtures for lifting and installation. Comparing the above three lifting and installation methods of the shear web, we found in practice that when a single shear web is hoisted and installed, the shear web is easily deformed in the length direction, resulting in a large deviation in the installation distance between the two shear webs , the installation steps are relatively cumbersome, and the installation position needs to be adjusted continuously during installation, resulting in more air bubbles in the coated adhesive under the shear web and many places need to be filled again, and it is difficult to locate accurately, etc., so that the wind power blades Shear strength decreases. In contrast, in order to minimize the problems in the lifting and installation of a single shear web, the method of simply assembling two shear webs and then lifting and installing is adopted by most of the prior art. The hoisting fixture of the assembled shear web needs to be able to ensure the various process parameters and structure of the assembled shear web. Patent No. 201020542936.4 "Megawatt Wind Turbine Shear Web Lifting Fixture Device" discloses a shear web lifting fixture device. From its technical scheme, although it solves the problem of lifting two shear webs at the same time, it also simplifies the shear web. The problem of hoisting and installation after pre-assembly, but for two shear webs that are not pre-assembled, it cannot meet the accuracy of the distance between the shear webs in the length direction, especially for the root tip of the shear web Position, from the content of the disclosed technical proposal, if you want to improve the accuracy of the distance between positions in the length direction, you need to increase the number of tooling, the number of cranes, or use auxiliary equipment such as hanging beams, and the height of the shear web length direction varies greatly , using tooling positioning installation, the bonding and pressing down after installation and the removal of tooling are more cumbersome, resulting in a longer stagnation time in the subsequent process, even if the shear web is simply assembled in advance to avoid deformation in the length direction and accurate spacing of each position However, the installation and disassembly operations of this clamp device are relatively cumbersome, especially for shear webs with high roots.

Contents of the invention

In view of the problems existing in the prior art, the purpose of the present invention is to design a method that can ensure that the distance between the assembled shear webs will not change during the hoisting and installation of the shear webs, and will not damage the shear web structure. , can be easily and quickly installed and disassembled, positioned and placed stably and accurately hoisted and installed megawatt-level wind power blades have been assembled inside the shear web clamping device to improve production efficiency and product quality.

In order to achieve the purpose of the above invention, the specific technical solution adopted by the present invention is: a clamping device for lifting and transporting the assembled shear web inside the blade of wind power generation, which is mainly composed of vertical beams, left clamps, right clamps, beams, and support rods. , spring, vertical splint, and central shaft; among them, the left and right fixtures with the same structure are connected through the central axis to form an "X"-shaped structure; the lower ends of the left and right fixtures are symmetrically installed with vertical splints; vertical beams and beams constitute The middle balance support arm of "T" shape structure, the vertical beam and the cross beam are connected together through the shaft, and the middle balance support arm is combined with the left and right clamps through the central shaft; the left and right clamps are symmetrically arranged on the middle balance support arm On both sides, the two ends of the beam are provided with two left and right support rods, which are connected to the beam through the shaft to form a rotating support structure; the vertical splints on the left and right clamps are symmetrically installed on the left support rod and right support of the rotating support structure On both sides of the bar, the upper ends of the left and right clamps are respectively provided with lifting lugs for connecting the wire rope; the static structural posture of the shear web clamping device is maintained by the spring between the left and right clamps; there is a small hole on the middle balance support arm, The left support rod and the right support rod on the rotating support structure are connected with the forked steel wire rope passing through the small hole on the middle balance support arm; elastic leather pads are glued on the surface of the vertical splint and the support rod in contact with the shear web.

The clamping device for hoisting and transporting the assembled shear web inside the wind power generation blade according to the present invention can smoothly lift and install the assembled shear web, and ensure the size of its assembly process, and minimize the deformation of the web. To improve production efficiency and blade quality, the clamping device has a simple structure and is convenient to use, and can satisfy operators to quickly install and disassemble tooling at a low position.

Description of drawings

Fig. 1 is a schematic structural view of the assembled shear web clamping device inside the wind power generation blade of the present invention.

In the figure: 1. vertical beam; 2. left fixture; 3. right fixture; 4. beam; 5. support rod; 6. shaft; 7. spring; 8. shear web; 9. shaft; 10. central axis; 11. Steel wire rope; 12. Vertical splint; 13. Shaft; 14. Steel wire rope; 15. Small hole.

Detailed ways

Provide the specific embodiment of the present invention below in conjunction with accompanying drawing as follows: As shown in Figure 1, a kind of internal shear web clamping device for hoisting and transporting wind power generation blades according to the present invention is mainly composed of vertical beam 1 , left fixture 2, right fixture 3, cross beam 4, support rod 5, spring 7, vertical splint 12, central shaft 10; wherein the left fixture 2 and right fixture 3 with the same structure are connected by the central shaft 10 to form an "X" shape Structure; the lower ends of the left fixture 2 and the right fixture 3 are symmetrically installed with vertical splints 12; the vertical beam 1 and the crossbeam 4 form a middle balance support arm of a "T" shape structure, and the vertical beam 1 and the crossbeam 4 are connected together through the shaft 9 The middle balance support arm is combined with the left fixture 2 and the right fixture 3 through the central axis 10; the left fixture 2 and the right fixture 3 are symmetrically arranged on both sides of the middle balance support arm; the two ends of the crossbeam 4 are designed with left and right supports The rod 5 is connected with the beam 4 through the shaft 6 to form a rotating support structure, and the two vertical splints 12 on the left clamp 2 and the right clamp 3 are symmetrically installed on both sides of the left and right support rods 5 of the rotating support structure; the left clamp 2, The upper end of the right clamp 3 is respectively provided with lifting lugs connected to the steel wire rope 11, and the shear web clamping device under the static structural posture is maintained by the spring 7 between the left and right clamps, and the middle balance support arm is provided with a small hole 15, and the rotation support Structurally, the left and right support rods 5 are connected with the forked steel wire rope 14 passing through the end of the small hole 15 on the middle balance support arm; the surfaces of the vertical splint 12 and the support rod 5 in contact with the shear web 8 are all glued with elastic leather pad.

When in use, choose three toolings to hang on the crane and distribute them above the three lifting points of the assembled shear webs, move the center of the beam of the clamping device to the center position between the assembled shear webs and lower it slowly, then the support Rod 5 will take advantage of the trend and form a "V" shape upwards. As the tooling continues to descend, when the support bar completely enters the space between the two webs, it will be stretched downward by its own weight to form a "one" shape. Clamp the left clamp 3 and the right clamp 2 towards the center under the weight of the web, the support rod 5 presses against the inside of the shear web 8 to maintain the distance, and finally lifts the assembled shear web.

When dismantling, when the crane is lowered to lower the tooling to the optional turning height of the support rod 5, the personnel stand on the ground and pull the steel wire rope 14 that is forked at one end to make the two support rods 5 upwards, and then use the upper car to lift the tooling up and cut the abdomen. Plate 8 is disengaged.

Claims (6)

1. A clamping device for lifting and transporting the assembled shear web inside the blade of wind power generation. Clamp (3), beam (4), support rod (5), spring (7), vertical splint (12), central shaft (10); wherein the left clamp (2) and right clamp (3) with the same structure pass The central axis (10) is connected to form an "X" shape structure; the vertical beam (1) and the beam (4) form a middle balance support arm of a "T" shape structure; the left clamp (2) and the right clamp (3) are symmetrical Arranged on both sides of the middle balance support arm; the lower ends of the left clamp (2) and the right clamp (3) are symmetrically installed with vertical splints (12), and the two ends of the beam (4) are designed with two left and right support rods (5), The support rod (5) is connected with the beam (4) through the shaft (6) to form a rotating support structure; the spring (7) is respectively installed between the left clamp (2) and the right clamp (3). 2. A clamping device for hoisting the assembled shear web inside the wind power generation blade according to claim 1, characterized in that: the middle balance support arm passes through the central axis (10) and the left clamp (2), right clamp Clamp (3) combination. 3. A clamping device for hoisting the assembled shear web inside a wind power generation blade according to claim 1, characterized in that: the upright beam (1) and the beam (4) are connected by a shaft. 4. A clamping device for hoisting the assembled shear web inside the wind power generation blade according to claim 1, characterized in that: the vertical splint (12) is symmetrically installed on the left and right support rods (5 ) on both sides. 5. A clamping device for hoisting the assembled shear web inside the wind power generation blade according to claim 1, characterized in that: a small hole (15) is designed on the middle balance support arm. 6. The clamping device for lifting the assembled shear web inside the wind power generation blade according to claim 1, characterized in that: between the vertical splint (12) and the support rod (5) and the shear web (8 ) contact surfaces with elastic leather pads.