Blade shape follow-up clamping device

Abstract

The utility model relates to the technical field of clamps, in particular to a blade shape follow-up clamping device which comprises a base, a first fixing beam, a second fixing beam and a plurality of connecting columns. The first fixing beam and the second fixing beam are arranged in parallel, and the connecting columns are connected between the first fixing beam and the second fixing beam. The multiple sets of clamping mechanisms are fixedly connected to the first fixing beam and the second fixing beam correspondingly and comprise shape follow-up plates, spherical hinge assemblies with one ends fixedly connected with the shape follow-up plates and the other ends penetrating through the first fixing beam or the second fixing beam and locking assemblies used for locking the spherical hinge assemblies on the first fixing beam or the second fixing beam. Each shape follow-up plate is provided with at least one set of spherical hinge assembly, and each spherical hinge assembly comprises a ball seat fixedly connected with the shape follow-up plate, a ball rotationally connected into the ball seat and a spherical hinge rod fixedly connected with the ball. By means of the spherical hinge assembly connected with the shape follow-up plate, multi-direction rotation of the shape follow-up plate is achieved through movable connection of the ball bodies and the ball seats in the spherical hinge assembly, then the shape follow-up plate is attached to the blade, and the stable clamping effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a blade-adaptive clamping device. Background Art

[0002] Wind turbine blades have a special shape and structure. The shapes of the upper and lower wing surfaces of the wind turbine blades are different. The upper wing surface is bent upward to become a convex surface, and the lower wing surface is recessed to become a concave surface. During the testing of the wind turbine blades, the wind turbine blades need to be clamped to keep them fixed.

[0003] In the prior art, when most clamps are used to fix a wind turbine blade, the conformal surface of the clamp can fit with most of the surface of the wind turbine blade, but when the curvature of some local surfaces is large, the conformal surface of the clamp cannot fit with the surface of the wind turbine blade. Therefore, the clamping effect of the wind turbine blade in the prior art clamp is not good and cannot provide a stable clamping effect.

[0004] Therefore, a form-fitting clamp that can fit all surfaces of a wind turbine blade has become a technical problem that urgently needs to be solved at this stage. Utility Model Content

[0005] In view of at least one of the above technical problems, the utility model provides a blade-shaped clamping device, which adopts an improved clamping structure to achieve a stable clamping effect.

[0006] According to a first aspect of the utility model, a blade-adaptive clamping device is provided, comprising:

[0007] A base, the base comprising a first fixed beam and a second fixed beam arranged relatively parallel to each other, and a plurality of connecting columns connected between the first fixed beam and the second fixed beam;

[0008] A plurality of groups of clamping mechanisms, each of which is fixedly connected to the first fixed beam and the second fixed beam, and each of which comprises a conforming plate, one end of which is fixedly connected to the conforming plate, and the other end of which passes through a ball joint assembly of the first fixed beam or the second fixed beam, and a locking assembly for locking the ball joint assembly on the first fixed beam or the second fixed beam;

[0009] Each of the conformable plates has at least one set of ball joint assemblies, and the ball joint assemblies include a ball seat fixedly connected to the conformable plate, a sphere rotatably connected to the ball seat, and a ball joint rod fixedly connected to the sphere.

[0010] In some embodiments of the present invention, the ball seat has a accommodating chamber, the accommodating chamber has a first inner surface and a second inner surface, the first inner surface is a spherical arc surface and is arranged away from one end of the conforming plate, the second inner surface is a cylindrical surface and is arranged close to one end of the conforming plate, the sphere is rotatably connected in the accommodating chamber, and the sphere is in contact with the first inner surface.

[0011] In some embodiments of the present invention, the arc height of the first inner surface is not greater than the radius of the sphere, and the diameter of the second inner surface is not less than the diameter of the sphere.

[0012] In some embodiments of the utility model, the ball seat has an opening at one end away from the conformal plate, and the opening also has a flared section. The diameter of the flared section at one end close to the opening is larger than the diameter away from the opening, and the diameter of the flared section away from the opening is larger than the diameter of the ball hinge rod.

[0013] In some embodiments of the utility model, the first fixed beam and the second fixed beam are each provided with a plurality of through holes, and the distance between two adjacent through holes is equal. The ball hinge rod passes through the through holes and can be relatively vertically fixed on the first fixed beam or the second fixed beam. When each of the conformal plates has a group of the ball hinge components, the plurality of through holes are arranged in a straight line; when each of the conformal plates has two or more groups of the ball hinge components, the plurality of through holes are arranged in multiple straight lines.

[0014] In some embodiments of the present invention, both the first fixing beam and the second fixing beam have reinforcing ribs.

[0015] In some embodiments of the present invention, a groove having the same curvature as that of the surface of the sphere is formed on the contact surface between the conformal plate and the sphere.

[0016] In some embodiments of the present invention, the end surface of the conformal plate away from the ball joint assembly also has anti-slip rubber.

[0017] In some embodiments of the utility model, the locking assembly includes at least one bolt passing through the ball hinge rod, the ball hinge rod has a thread, the bolt cooperates with the thread, and when the bolt is tightened, it abuts against the first fixed beam or the second fixed beam to achieve locking of the ball hinge assembly.

[0018] In some embodiments of the present invention, the locking assembly further has a gasket, and the gasket is arranged between the bolt and the first fixing beam or the second fixing beam.

[0019] The beneficial effects of the utility model are as follows: the utility model fixes the blades by means of a clamping mechanism fixedly connected to the first fixed beam and the second fixed beam, the clamping mechanism comprising a conformal plate fitted with the blades, and a ball joint assembly rotatable in multiple directions, the ball joint assembly comprising a ball seat fixed on the conformal plate, a sphere rotatably connected in the ball seat, and a ball joint rod connected to the sphere, the ball joint rod passing through the first fixed beam and the second fixed beam, the utility model adjusts the angle of the sphere in the ball seat so that the conformal plate fits with the blades, and then fixes the ball joint rod through a locking assembly, thereby achieving a stable clamping effect on the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the blade-shaped clamping device in the embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the clamping mechanism in the embodiment of the utility model;

[0023] Figure 3 This is a front view of the clamping mechanism in the embodiment of the utility model;

[0024] Figure 4 In the embodiment of the utility model Figure 3 AA section view of the middle clamping mechanism;

[0025] Figure 5 A top view of a ball seat in an embodiment of the utility model;

[0026] Figure 6 In the embodiment of the utility model Figure 5 BB section view of the center tee;

[0027] Figure 7 A top view of a conformable plate in an embodiment of the utility model;

[0028] Figure 8 In the embodiment of the utility model Figure 5 CC section view of the middle conformal plate;

[0029] Fig. 9 In the embodiment of the utility model Figure 1 A schematic diagram of the structure at D in the middle is enlarged;

[0030] Fig.10 This is a front view of the blade-shaped clamping device in the embodiment of the utility model;

[0031] Fig.11 In the embodiment of the utility model Fig.10 EE section view of the middle blade conformal clamping device. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] like Figures 1 to 11 The blade-shaped clamping device shown comprises: a base 1 and a plurality of clamping mechanisms 2 .

[0036] The base 1 includes a first fixed beam 11 and a second fixed beam 12 arranged in parallel with each other, and a plurality of connecting columns 13 connected between the first fixed beam 11 and the second fixed beam 12. Figure 1 As shown, the first fixed beam 11 and the second fixed beam 12 are arranged in parallel and connected by a plurality of connecting columns 13, so that there is a space between the first fixed beam 11 and the second fixed beam 12 to clamp the blade 01. The length of the connecting column 13 can be appropriately selected according to the thickness of the blade 01. The connecting column 13 plays a role in fixing and supporting the first fixed beam 11 and the second fixed beam 12. It should be pointed out here that the connecting column 13 can be four columns arranged at the four corners of the base 1, or multiple columns can be added in the middle of the base 1 according to the width of the base 1.

[0037] The plurality of clamping mechanisms 2 are respectively fixedly connected to the first fixed beam 11 and the second fixed beam 12. The clamping mechanism 2 includes a conforming plate 3, one end of which is fixedly connected to the conforming plate 3, and the other end of which passes through the ball joint assembly 4 of the first fixed beam 11 or the second fixed beam 12, and a locking assembly 8 for locking the ball joint assembly 4 on the first fixed beam 11 or the second fixed beam 12. Figure 1 , Figure 2 As shown, the multi-directional rotation of the ball joint assembly 4 drives the conforming plate 3 to fit the positions of different arcs on the blade 01, and then the ball joint assembly 4 is locked at different positions through the locking assembly 8. In the specific working process, the blade 01 is first placed between the first fixed beam 11 and the second fixed beam 12, and the height of the ball joint assembly 4 is adjusted to make the conforming plate 3 fit the blade 01, and then the locking assembly 8 is locked to fix the blade 01. It should be pointed out here that there are many structural forms of the locking assembly 8, which can be locked by a bolt 81 and a screw rod, or locked by the cooperation of a drive motor and a screw rod, or other structural forms that can be locked.

[0038] Each conformable plate 3 has at least one set of ball joint components 4, and the ball joint components 4 include a ball seat 5 fixedly connected to the conformable plate 3, a ball 6 rotatably connected to the ball seat 5, and a ball joint rod 7 fixedly connected to the ball 6. Figures 2 to 4 As shown, the ball 6 is fixedly connected to the ball hinge rod 7, the ball seat 5 is fixed on the conformal plate 3, and the ball 6 is rotatably connected inside the ball seat 5. When the blade 01 is clamped by the clamping mechanism 2, the locking assembly 8 fixes the conformal plate 3 and the ball hinge assembly 4, and the force is applied to the ball 6 through the ball hinge rod 7, and the force is applied to the conformal plate 3, thereby achieving a stable clamping effect on the blade 01. It should be pointed out here that the ball hinge assembly 4 can have a group, which is set at the center of the conformal plate 3, and the force is applied to the conformal plate 3 through the center position. Two or more groups can also be set to control the specific tilt angle of the conformal plate 3. It should be pointed out here that there are many forms of fixed connection between the ball seat 5 and the conformal plate 3, which can be welding, screwing, nailing or other forms.

[0039] like Figure 1 As shown, when the blade 01 conformal clamping device clamps the blade 01, the blade 01 is first placed between the first fixed beam 11 and the second fixed beam 12, and the approximate position of the blade 01 is fixed by pre-adjusting the height of the ball hinge rod 7, and then the position of the conformal plate 3 on each clamping mechanism 2 is adjusted respectively, and the angle of the sphere 6 in the ball seat 5 is rotated to make the conformal plate 3 fit the position of the blade 01, and finally the locking assembly 8 is locked to fix it, and each clamping mechanism 2 is fixed in a cycle to achieve the clamping action of the blade 01.

[0040] The utility model fixes the blade 01 by means of a clamping mechanism 2 fixedly connected to the first fixed beam 11 and the second fixed beam 12. The clamping mechanism 2 includes a conformal plate 3 fitted with the blade 01 and a multi-directionally rotatable ball joint assembly 4. The ball joint assembly 4 includes a ball seat 5 fixed on the conformal plate 3, a ball 6 rotatably connected in the ball seat 5, and a ball joint rod 7 connected to the ball 6. The ball joint rod 7 passes through the first fixed beam 11 and the second fixed beam 12. The utility model adjusts the angle of the ball 6 in the ball seat 5 so that the conformal plate 3 fits with the blade 01, and then fixes the ball joint rod 7 through the locking assembly 8, thereby achieving a stable clamping effect on the blade 01.

[0041] In some embodiments of the present invention, the ball seat 5 has a housing chamber 51, the housing chamber 51 has a first inner surface 51a and a second inner surface 51b, the first inner surface 51a is a spherical arc surface and is arranged away from one end of the conforming plate 3, the second inner surface 51b is a cylindrical surface and is arranged close to one end of the conforming plate 3, the ball 6 is rotatably connected in the housing chamber 51, and the ball 6 is in contact with the first inner surface 51a. Figure 4 , Figure 6 As shown, the ball 6 is rotatably connected to the inside of the ball seat 5. During installation, the ball hinge rod 7 is first extended into the inside of the ball seat 5 from the opening 52 near one end of the conformal plate 3. The second surface is a cylinder to facilitate the passage of the ball 6. After passing through, the ball 6 contacts the spherical arc surface of the first surface. The spherical arc surface of the first surface is a shrinking structure, which has a limiting effect on the ball 6 to prevent the ball 6 from falling off during rotation.

[0042] Further, the arc height of the first inner surface 51a is not greater than the radius of the sphere 6, and the diameter of the second inner surface 51b is not less than the diameter of the sphere 6. Figure 4 , Figure 6 As shown, the diameter of the second surface is set to be no less than the diameter of the sphere 6. In order to facilitate the passage of the sphere 6 during installation, the arc height of the first inner surface 51a is set to be no greater than the radius of the sphere 6. This is to limit the rotation of the sphere 6 in the ball seat 5 and ensure that there is no shaking or positional displacement during the rotation of the sphere 6.

[0043] The ball 6 rotates inside the ball seat 5. To make the rotation angle of the ball 6 larger, the ball seat 5 has an opening 52 at one end away from the conforming plate 3. The opening 52 also has a flared section 52a. The diameter of the flared section 52a near the opening 52 is larger than the diameter away from the opening 52. The diameter of the flared section 52a away from the opening 52 is larger than the diameter of the ball hinge rod 7. Figures 4 to 6As shown, the diameter of the expanded section 52a away from the opening 52 is larger than the diameter of the ball joint rod 7, so that the ball joint rod 7 has multi-directionality during rotation. At the same time, the diameter of the end of the expanded section 52a close to the opening 52 is larger than the diameter away from the opening 52, so that when the ball joint rod 7 rotates to the maximum angle, the expanded section 52a fits with the ball joint rod 7, thereby achieving a larger rotation angle of the ball 6 inside the ball seat 5.

[0044] In some embodiments of the present invention, the first fixed beam 11 and the second fixed beam 12 are provided with a plurality of through holes 14, and the distance between two adjacent through holes 14 is equal. The ball joint rod 7 passes through the through holes 14 and can be relatively vertically fixed on the first fixed beam 11 or the second fixed beam 12. When each conformal plate 3 has a set of ball joint components 4, the plurality of through holes 14 are arranged in a straight line; when each conformal plate 3 has two or more sets of ball joint components 4, the plurality of through holes 14 are arranged in multiple straight lines. Fig.10 , Fig.11 As shown, the through holes 14 arranged in a straight line are used to pass through the ball joint assembly 4, so that the clamping mechanism 2 can maintain the same level of force during the process of fixing the blade 01, thereby achieving stability in clamping the blade 01. It should be pointed out here that as the number of ball joint assemblies 4 on the conformal plate 3 changes, the number of through holes 14 increases, and each row of through holes 14 is arranged in parallel to maintain stability in clamping the blade 01.

[0045] By opening the through hole 14 for passing the ball joint rod 7 on the first fixed beam 11 and the second fixed beam 12, in order to make the first fixed beam 11 and the second fixed beam 12 more stable, the first fixed beam 11 and the second fixed beam 12 are provided with a reinforcing rib 15. Fig.10 , Fig.11 As shown, by setting the reinforcing rib 15, the structure of the first fixing beam 11 and the second fixing beam 12 is more solid, and it is also more stable when locking the blade 01.

[0046] The ball 6 is rotatably connected in the ball seat 5. In order to make the contact area between the ball 6 and the ball seat 5 and the conforming plate 3 larger during the rotation process and make the rotation more stable, a groove 31 with the same curvature as the surface of the ball 6 is also provided on the contact surface between the conforming plate 3 and the ball 6. Figure 7 , Figure 8 As shown, the groove 31 is used to accommodate the ball 6, so that there are contact surfaces between the ball 6 and the conformal plate 3 and the ball seat 5, so as to ensure that the ball 6 is more stable during the rotation process.

[0047] The conforming plate 3 is in contact with the blade 01, and the locking assembly 8 is used to fix the ball joint assembly 4. In order to reduce the damage of the conforming plate 3 to the blade 01 and the position deviation during the clamping process, the conforming plate 3 is also provided with anti-slip rubber 32 on the end surface away from the ball joint assembly 4. Figure 3 , Figure 4 , Figure 8 As shown, by providing an anti-skid rubber 32 on one end surface of the conforming plate 3 away from the ball joint assembly 4, on the one hand, it plays an anti-skid role to prevent the blade 01 from being offset during the clamping process, and on the other hand, it prevents excessive force during clamping from damaging the surface of the blade 01. The provision of the anti-skid rubber 32 can avoid the above situation.

[0048] In some embodiments of the present invention, the locking assembly 8 includes at least one bolt 81 passing through the ball joint rod 7. The ball joint rod 7 has threads, and the bolt 81 cooperates with the threads. When the bolt 81 is locked, it abuts against the first fixed beam 11 or the second fixed beam 12 to achieve locking of the ball joint assembly 4. Figures 1 to 4 As shown, the ball hinge rod 7 has threads, and the locking assembly 8 is a bolt 81, and the ball hinge assembly 4 is fixed to the first fixed beam 11 or the second fixed beam 12 through the cooperation of the bolt 81 and the threads. It should be pointed out here that the number of the bolts 81 can be one or more. When there are two or more, at least one bolt 81 can be set at both ends of the first fixed beam 11 or the second fixed beam 12 to improve the safety of the locking assembly 8.

[0049] Through the arrangement of the bolt 81, in order to prevent the friction between the bolt 81 and the first fixed beam 11 or the second fixed beam 12 from causing loss, the locking assembly 8 also has a gasket 82, which is arranged between the bolt 81 and the first fixed beam 11 or the second fixed beam 12. Fig. 9 As shown, the gasket 82 sandwiched between the first fixing beam 11 or the second fixing beam 12 and the bolt 81 is used to reduce wear and tear, thereby increasing the service life of the conformal clamping device for the blade 01 .

[0050] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blade-shaped clamping device, characterized in that: include: A base, the base comprising a first fixed beam and a second fixed beam arranged relatively parallel to each other, and a plurality of connecting columns connected between the first fixed beam and the second fixed beam; A plurality of groups of clamping mechanisms, each of which is fixedly connected to the first fixed beam and the second fixed beam, and each of which comprises a conforming plate, one end of which is fixedly connected to the conforming plate, and the other end of which passes through a ball joint assembly of the first fixed beam or the second fixed beam, and a locking assembly for locking the ball joint assembly on the first fixed beam or the second fixed beam; Each of the conformable plates has at least one set of ball joint assemblies, and the ball joint assemblies include a ball seat fixedly connected to the conformable plate, a sphere rotatably connected to the ball seat, and a ball joint rod fixedly connected to the sphere.

2. The blade-shaped clamping device according to claim 1, characterized in that: The ball seat has a accommodating chamber, and the accommodating chamber has a first inner surface and a second inner surface. The first inner surface is a spherical arc surface and is arranged away from one end of the conforming plate, and the second inner surface is a cylindrical surface and is arranged close to one end of the conforming plate. The ball is rotatably connected in the accommodating chamber, and the ball is in contact with the first inner surface.

3. The blade-shaped clamping device according to claim 2, characterized in that: The arc height of the first inner surface is not greater than the radius of the sphere, and the diameter of the second inner surface is not less than the diameter of the sphere.

4. The blade-shaped clamping device according to claim 1, characterized in that: The end of the ball seat away from the conformal plate has an opening, and the opening also has a flared section. The diameter of the flared section at one end close to the opening is larger than the diameter away from the opening, and the diameter of the flared section away from the opening is larger than the diameter of the ball hinge rod.

5. The blade-shaped clamping device according to claim 1, characterized in that: The first fixed beam and the second fixed beam are each provided with a plurality of through holes, and the distance between two adjacent through holes is equal. The ball hinge rod passes through the through holes and can be relatively vertically fixed on the first fixed beam or the second fixed beam. When each of the conformal plates has a group of the ball hinge components, the plurality of through holes are arranged in a straight line; when each of the conformal plates has two or more groups of the ball hinge components, the plurality of through holes are arranged in multiple straight lines.

6. The blade-shaped clamping device according to claim 1, characterized in that: The first fixing beam and the second fixing beam both have reinforcing ribs.

7. The blade-shaped clamping device according to claim 1, characterized in that: The contact surface between the conformal plate and the sphere is provided with a groove having the same curvature as that of the surface of the sphere.

8. The blade-shaped clamping device according to claim 1, characterized in that: The end surface of the conforming plate away from the ball joint assembly is also provided with anti-slip rubber.

9. The blade-shaped clamping device according to claim 1, characterized in that: The locking assembly includes at least one bolt passing through the ball hinge rod, the ball hinge rod has a thread, the bolt cooperates with the thread, and when the bolt is locked, it abuts against the first fixed beam or the second fixed beam to achieve locking of the ball hinge assembly.

10. The blade-shaped clamping device according to claim 9, characterized in that: The locking assembly is also provided with a gasket, which is arranged between the bolt and the first fixing beam or the second fixing beam.

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