A clamping and anti-deformation device for welded blades and a method for welding blades

Abstract

The present invention provides a clamping and anti-deformation device for welding blades, which relates to the field of blades and includes a bottom plate and a support. The support is located above the bottom plate. The support includes an upper pressing plate and a lower support plate. The upper pressing plate is located above the lower support plate, and the blade is located in the gap between the upper pressing plate and the lower support plate. The method for welding a blade using the above device includes the following steps: positioning and placing the lower lobe of the blade; positioning the reinforcing rib plate on the lower lobe of the blade and welding it in place; fixing the upper lobe of the blade to the lower lobe of the blade and welding it in place; fixing the tail plate of the blade and welding the tail plate to the tail of the blade; removing the blade. Using the device and method provided by the present invention, it is possible to achieve the clamping and positioning of a welding blade and the function of preventing deformation during welding, improve the product manufacturing efficiency. The design of this device is simple, the manufacturing cost is low, and it is conducive to large-area promotion and use in the production workshop.

Description

Technical Field

[0001] The invention belongs to the field of blades, and particularly relates to a clamping and anti-deformation device for welded blades and a method for welding blades. Background Art

[0002] Blades, ranging from small stirring blades to large wind power generation blades, have various functions and are widely used. The quality of the blades directly affects the performance of the products, so the welding of the blades is particularly important during the manufacturing process. In order to ensure the welding effect of the blades, a welding device that can prevent the blades from deforming during the welding process is required. The anti-deformation and positioning devices in the existing blade welding devices have relatively complex structures, high manufacturing costs, cumbersome usage processes, and unsatisfactory positioning effects. If the blades cannot be anti-deformed and accurately positioned during the welding process, it will lead to large welding errors and affect the quality of the blades. Summary of the Invention

[0003] The purpose of the invention is to provide a clamping and anti-deformation device for welded blades and a method for welding blades to solve the problems mentioned in the above background art.

[0004] The common shape of the current blades is usually crescent-shaped, including an upper blade flap, a lower blade flap, and a tail plate. The upper blade flap is located above the lower blade flap. A reinforcing rib plate is arranged between the upper blade flap and the lower blade flap, dividing the inner cavity of the lower blade flap into a left cavity and a right cavity. The two ends of the upper blade flap and the lower blade flap are fixedly connected. The tail plate is located at the end where the upper blade flap and the lower blade flap are fixedly connected, and the tail plate is fixedly connected to the tail of the blade. The upper blade flap, the lower blade flap, the reinforcing rib plate, and the tail plate are fixedly connected by welding.

[0005] The outer surface of the upper part of the upper blade flap is a first curved surface, the inner surface of the upper part of the lower blade flap is a second curved surface, the inner surface of the upper part of the left cavity of the lower blade flap is a third curved surface, and the inner surface of the upper part of the right cavity of the lower blade flap is a fourth curved surface. The second curved surface includes the third curved surface and the fourth curved surface. The outer surface of the lower part of the lower blade flap is a fifth curved surface.

[0006] The included angle between the reinforcing rib plate and the tangent line at the intersection of the reinforcing rib plate and the fourth curved surface is a°.

[0007] To prevent the blades from deforming when welding the above-mentioned blades, the invention provides a clamping and anti-deformation device for welded blades, which includes a bottom plate and a support. The support is located above the bottom plate. The support includes an upper pressing plate and a lower support plate. The upper pressing plate is located above the lower support plate, and the blade is located in the gap between the upper pressing plate and the lower support plate.

[0008] Furthermore, the upper pressing plate is provided with a shaping plate, a plurality of guide tubes, a plurality of side plates, and a plurality of first fixing plates.

[0009] The side surface of the shaping plate is an irregular curved surface, including a first side curved surface, a second side curved surface, a third side curved surface, and a fourth side curved surface; the first side curved surface is located on the left side of the shaping plate, the second side curved surface is located on the right side of the shaping plate, the middle part of the third side curved surface matches the second curved surface of the blade, and the middle part of the fourth side curved surface matches the first curved surface of the blade.

[0010] By providing relief holes in the shaping plate, the weight of the shaping plate can be reduced;

[0011] The third side curved surface and the fourth side curved surface are respectively located on the upper side or the lower side of the shaping plate, and the parts of the third side curved surface and the fourth side curved surface on the upper pressing plate excluding the middle curved surface are adapted to the parts of the second groove on the support plate excluding the middle curved surface of the seventh side curved surface, so as to use the upper pressing plate and the lower support plate to realize the pressing effect on the lower flap or the blade of the blade.

[0012] The guide pipes are located on the left and right sides of the shaping plate, and are respectively connected to the first side curved surface and the second side curved surface. The side plates and the first fixing plates are located on both sides close to the fourth side curved surface of the shaping plate and are fixedly connected to the shaping plate.

[0013] The number of the side plates is more than two. The lower bottom surface of the side plates matches the first curved surface of the upper flap of the blade and is used to press the upper flap of the blade to play a further positioning role. Therefore, the more the number of side plates, the better in theory. The number needs to be determined according to the actual situation. Preferably, the number of side plates is 6, 8, 10, 12, 14 or 16;

[0014] The number of the first fixing plates is preferably 2 or 4.

[0015] Further, a first groove is provided in the shaping plate. The cross-sectional shape of the first groove is rectangular. The first groove (2-1-1-3) divides the middle part of the third side curved surface (2-1-1-1) into two parts, namely a fifth side curved surface and a sixth side curved surface. The first groove matches the reinforcing rib plate between the first groove and the blade. The fifth side curved surface matches the third curved surface of the blade. The sixth side curved surface matches the fourth curved surface of the blade. The included angle between the first groove and the tangent line at the intersection of the first groove and the sixth side curved surface is a°.

[0016] The included angle between the reinforcing rib plate and the tangent line at the intersection of the reinforcing rib plate and the fourth curved surface is the same as the included angle between the first groove and the tangent line at the intersection of the first groove and the sixth side curved surface.

[0017] Further, a support plate, a flat plate, a second fixing plate and a screw are provided on the lower support plate;

[0018] The supporting plate is located above the flat plate and fixedly connected to the flat plate. The overall contour of the supporting plate is rectangular. A second groove is formed in the middle of the upper part of the supporting plate, and the corresponding curved surface is the seventh side curved surface. The middle part of the seventh side curved surface matches the curved surface five of the blade.

[0019] The second fixing plate is located on both sides close to the seventh side curved surface in the second groove and fixedly connected to the supporting plate.

[0020] The first fixing plate and the second fixing plate are parallel to each other. The tail plate of the blade is located between the first fixing plate and the second fixing plate. The first fixing plate is above the tail plate, and the second fixing plate is below the tail plate. Threaded holes are formed in both the first fixing plate and the second fixing plate. The screw rod is located on both sides of the second groove and above the supporting plate, and the screw rod is fixedly connected to the supporting plate. The screw rod on the supporting plate is installed in the guiding tube on the shaping plate, and the guiding tube can slide up and down relative to the screw rod.

[0021] Further, a plurality of threaded blind holes are provided on the bottom plate, and a plurality of waist-shaped grooves are provided on the flat plate. The number of the threaded blind holes is the same as that of the waist-shaped grooves and their positions correspond one by one. The bottom plate and the flat plate are fixedly connected by screws and washers.

[0022] Insert the screw into the waist-shaped groove on the flat plate and the threaded blind hole on the bottom plate to realize the fixed connection between the bottom plate and the support.

[0023] Further, the number of the supports is more than one, and adjacent supports are connected by a connecting plate. The number of the side plates is more than four, and the number of both the first fixing plate and the second fixing plate is more than two. The numbers of the side plates, the first fixing plate and the second fixing plate are even numbers.

[0024] The side plates and the first fixing plate are symmetrically installed on both sides close to the fourth side curved surface of the shaping plate, and the second fixing plate is symmetrically installed on both sides close to the seventh side curved surface in the second groove.

[0025] A method for welding a blade by using a clamping anti-deformation device includes the following steps:

[0026] Step 1: Position and place the lower flap of the blade.

[0027] Step 2: Position the reinforcing rib plate on the lower flap of the blade and weld it in place.

[0028] Step 3: Fix the upper flap of the blade on the lower flap of the blade and weld it in place.

[0029] Step 4: Fix the tail plate of the blade and weld the tail plate to the tail of the blade.

[0030] Step Five: Remove the blade.

[0031] Further, in Step One, place the lower petal of the blade in the second groove of the support plate. Among them, the curved surface five on the lower petal of the blade matches the middle part of the seventh side curved surface in the second groove to achieve positioning and placing the lower petal of the blade.

[0032] In Step Two, install the screw on the support plate into the guide tube on the shaping plate. At this time, the middle part of the third side curved surface matches the curved surface two on the lower petal of the blade, and the first groove on the shaping plate points to the curved surface two on the lower petal of the blade. Place the reinforcing rib plate in the first groove and on the curved surface two of the lower petal of the blade to achieve positioning the reinforcing rib plate on the lower petal of the blade. Then, fix the upper pressure plate and the lower support plate with nuts and washers to clamp the lower petal of the blade, and fixedly connect the reinforcing rib plate and the lower petal of the blade by welding.

[0033] During the welding process, the upper pressure plate and the lower support plate are removed, which has the function of preventing deformation.

[0034] Further, in Step Three, remove the nuts and washers on the screw and the guide tube, separate the upper pressure plate on the support from the lower support plate, then place the upper petal of the blade on the lower petal of the blade, turn the shaping plate 180°, and install the screw on the support plate into the guide tube on the shaping plate so that the middle part of the fourth side curved surface fits the curved surface one of the upper petal of the blade. Fix the upper pressure plate and the lower support plate with nuts and washers to clamp the upper petal and the lower petal of the blade, and fixedly connect the lower petal and the upper petal of the blade by welding.

[0035] During the welding process, the upper pressure plate and the lower support plate are removed, which has the function of preventing deformation.

[0036] Further, in Step Four, place the tail plate of the blade at the tail of the blade and between the first fixing plate and the second fixing plate, then pass the screw through the screw holes on the first fixing plate and the second fixing plate to fix the tail plate of the blade, and weld the tail plate to the tail of the blade by welding.

[0037] Step Five: Remove the nuts and washers on the screw and the guide tube, separate the upper pressure plate on the support from the lower support plate, and take out the welded blade.

[0038] Beneficial effects:

[0039] (1) The present invention provides a clamping and anti-deformation device for welding blades and a method for welding blades. The lower lobe of the blade can be directly placed on the support plate in the lower support plate, so that the curved surface five of the lower lobe of the blade matches the seventh side curved surface in the support plate. By installing the upper pressure plate on the lower support plate and pointing the first groove in the shaping plate at the curved surface two of the blade, the upper pressure plate and the lower support plate can realize the function of clamping the lower lobe of the blade. At the same time, through the first groove in the shaping plate, the installation and positioning function of the reinforcing rib plate in the blade relative to the lower lobe of the blade can be realized, so that the welding requirements between the reinforcing rib plate and the lower lobe of the blade are met. During the welding process, the upper pressure plate and the lower support plate are not removed, and the anti-deformation function is provided.

[0040] (2) The present invention provides a clamping and anti-deformation device for welding blades and a method for welding blades. The upper lobe of the blade is installed on the lower lobe of the blade. By installing the upper pressure plate on the lower support plate and pointing the fourth side curved surface in the shaping plate at the curved surface one of the upper lobe of the blade, the upper pressure plate and the lower support plate can realize the function of clamping the upper and lower lobes of the blade, so that the welding requirements between the upper and lower lobes of the blade are met. During the welding process, the upper pressure plate and the lower support plate are not removed, and the anti-deformation function is provided.

[0041] (3) The present invention provides a clamping and anti-deformation device for welding blades and a method for welding blades. The tail plate is installed at the tail position of the blade and can be installed and fixed by long-foot set screws, and the welding anti-deformation function is satisfied; by using this device, the clamping and positioning of a welding blade can be realized, and the welding anti-deformation function is improved. In addition, the design structure of this device is simple, the manufacturing cost is low, and it is conducive to large-scale promotion and use in the production workshop.

[0042] The following will further illustrate the concept, specific structure and technical effects of the present invention with reference to the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Brief Description of the Drawings

[0043] Figure 1 It is a schematic structural diagram of a welding blade;

[0044] Figure 2 It is a schematic structural diagram of the upper lobe of the blade;

[0045] Figure 3 It is a schematic structural diagram of the lower lobe of the blade;

[0046] Figure 4 It is a schematic structural diagram of the connection relationship between the lower lobe of the blade and the reinforcing rib plate;

[0047] Figure 5 It is a top view of a clamping and anti-deformation device for welding blades;

[0048] Figure 6 For Figure 5 Cross-sectional view along A-A;

[0049] Figure 7 Schematic diagram of the support structure in a welding blade clamping anti-deformation device

[0050] Figure 8 Schematic diagram of the upper pressing plate in the support

[0051] Figure 9 Top view of the upper pressing plate in the support

[0052] Figure 10 For Figure 8 Cross-sectional view along direction C in

[0053] Figure 11 Schematic diagram of the lower support plate in the support

[0054] Figure 12 Top view of the lower support plate in the support

[0055] Figure 13 For Figure 11 Cross-sectional view along direction B in

[0056] Figure 14 Schematic diagram of the clamping of the lower leaf and the reinforcing rib plate in a welding blade clamping anti-deformation device

[0057] Figure 15 Schematic diagram of the clamping of the blade in a welding blade clamping anti-deformation device

[0058] Reference numerals are as follows: 0-1 - lower leaf of the blade; 0-1-1 - curved surface five; 0-1-2 - curved surface two; 0-1-3 - curved surface three; 0-1-4 - curved surface four; 0-2 - upper leaf of the blade; 0-2-1 - curved surface one; 0-3 - reinforcing rib plate; 0-4 - tail plate; 1 - bottom plate; 2 - support; 2-1 - upper pressing plate; 2-1-1 - shaping plate; 2-1-1-1 - third side curved surface; 2-1-1-2 - fourth side curved surface; 2-1-1-3* - first groove; 2-1-1-4 - fifth side curved surface; 2-1-1-5* - sixth side curved surface; 2-1-2 - guide tube; 2-1-3* - side plate; 2-1-4 - first fixing plate; 2-2 - lower support plate; 2-2-1* - support plate; 2-2-1-1 - seventh side curved surface; 2-2-2 - flat plate; 2-2-2-1 - waist-shaped groove; 2-2-3 - second fixing plate; 2-2-4 - screw; 3 - connecting plate. Detailed implementation manners

[0059] The present invention will be further described below in conjunction with specific implementation manners. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0060] In the accompanying drawings, components with the same structure are denoted by the same numerical labels, and components with similar structures or functions are denoted by similar numerical labels everywhere. The dimensions and thicknesses of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the dimensions and thicknesses of each component. In order to make the illustration clearer, the thicknesses of some components in the drawings are appropriately exaggerated in some places.

[0061] Embodiment

[0062] Such as Figures 1 to 4 , the shape of the blade is generally crescent-shaped, including the upper blade 0-2, the lower blade 0-1 and the tail plate 0-4. The upper blade 0-2 is located above the lower blade 0-1. A reinforcing rib plate 0-3 is arranged between the upper blade 0-2 and the lower blade 0-1, dividing the inner cavity of the lower blade 0-1 into a left cavity and a right cavity. The two ends of the upper blade 0-2 and the lower blade 0-1 are fixedly connected. The tail plate 0-4 is located at the end where the upper blade 0-2 and the lower blade 0-1 are fixedly connected. The tail plate 0-4 is fixedly connected to the tail of the blade. The upper blade 0-2, the lower blade 0-1, the reinforcing rib plate 0-3 and the tail plate 0-4 are fixedly connected by welding;

[0063] The outer surface of the upper part of the upper blade 0-2 is the first curved surface 0-2-1, the inner surface of the upper part of the lower blade 0-1 is the second curved surface 0-1-2, the inner surface of the upper part of the left cavity of the lower blade 0-1 is the third curved surface 0-1-3, and the inner surface of the upper part of the right cavity of the lower blade 0-1 is the fourth curved surface 0-1-4; the second curved surface 0-1-2 includes the third curved surface 0-1-3 and the fourth curved surface 0-1-4; the outer surface of the lower part of the lower blade 0-1 is the fifth curved surface 0-1-1;

[0064] The included angle between the reinforcing rib plate 0-3 and the tangent line at the intersection of the reinforcing rib plate 0-3 and the fourth curved surface 0-1-4 is a°.

[0065] Such as Figures 5 to 15 , in a preferred embodiment, the present invention provides a welding blade clamping and anti-deformation device, including a bottom plate 1 and a support 2. The support 2 is located above the bottom plate 1. The support 2 includes an upper pressing plate 2-1 and a lower support plate 2-2. The upper pressing plate 2-1 is located above the lower support plate 2-2. The blade is located in the gap between the upper pressing plate 2-1 and the lower support plate 2-2.

[0066] The upper pressing plate 2-1 is provided with a shaping plate 2-1-1, a plurality of guide tubes 2-1-2, a plurality of side plates 2-1-3 and a plurality of first fixing plates 2-1-4;

[0067] The side surface of the shaping plate 2-1-1 is an irregular curved surface, including a first side curved surface, a second side curved surface, a third side curved surface 2-1-1-1 and a fourth side curved surface 2-1-1-2; the first side curved surface is located on the left side of the shaping plate 2-1-1, the second side curved surface is located on the right side of the shaping plate 2-1-1, the middle part of the third side curved surface 2-1-1-1 matches the second curved surface 0-1-2 of the blade, and the middle part of the fourth side curved surface 2-1-1-2 matches the first curved surface 0-2-1 of the blade;

[0068] By providing relief holes in the shaping plate 2-1-1, the weight of the shaping plate 2-1-1 can be reduced;

[0069] The third side curved surface 2-1-1-1 and the fourth side curved surface 2-1-1-2 are respectively located on the upper side or the lower side of the shaping plate 2-1-1;

[0070] The number of the guide pipes 2-1-2 is two;

[0071] The guide pipes 2-1-2 are located on the left and right sides of the shaping plate 2-1-1, and are respectively connected to the first side curved surface and the second side curved surface. The side plates 2-1-3 and the first fixing plates 2-1-4 are located on both sides close to the fourth side curved surface 2-1-1-2 of the shaping plate 2-1-1 and are fixedly connected to the shaping plate 2-1-1.

[0072] The number of the side plates 2-1-3 is more than two. The lower bottom surface of the side plate 2-1-3 matches the first curved surface 0-2-1 of the upper lobe 0-2 of the blade, and is used to press the upper lobe 0-2 of the blade, playing a further positioning role. Therefore, the more the number of the side plates 2-1-3 is, the better. The number needs to be determined according to the actual situation. Preferably, the number of the side plates 2-1-3 is 6, 8, 10, 12, 14 or 16;

[0073] The number of the first fixing plates 2-1-4 is preferably 2 or 4;

[0074] In this embodiment, the shaping plate 2-1-1, the guide pipes 2-1-2, the side plates 2-1-3 and the first fixing plates 2-1-4 are fixedly connected by welding;

[0075] A first groove 2-1-1-3 is provided in the shaping plate 2-1-1. The cross-sectional shape of the first groove 2-1-1-3 is rectangular. The first groove (2-1-1-3) divides the middle part of the third side surface (2-1-1-1) into two parts, namely a fifth side surface 2-1-1-4 and a sixth side surface 2-1-1-5. The first groove 2-1-1-3 matches the reinforcing rib plate 0-3 between the blades. The fifth side surface 2-1-1-4 matches the third surface 0-1-3 of the blade. The sixth side surface 2-1-1-5 matches the fourth surface 0-1-4 of the blade. The included angle between the first groove 2-1-1-3 and the tangent line at the intersection of the first groove 2-1-1-3 and the sixth side surface 2-1-1-5 is a°.

[0076] The included angle between the reinforcing rib plate 0-3 and the tangent line at the intersection of the reinforcing rib plate 0-3 and the fourth surface 0-1-4 is the same as the included angle between the first groove 2-1-1-3 and the tangent line at the intersection of the first groove 2-1-1-3 and the sixth side surface 2-1-1-5.

[0077] Support plates 2-2-1, flat plates 2-2-2, second fixing plates 2-2-3 and screws 2-2-4 are provided on the lower support plate 2-2.

[0078] The support plate 2-2-1 is located above the flat plate 2-2-2 and is fixedly connected to the flat plate 2-2-2. The overall contour of the support plate 2-2-1 is rectangular. A second groove is provided in the middle of the upper part of the support plate 2-2-1, and the corresponding surface is a seventh side surface 2-2-1-1. The middle part of the seventh side surface 2-2-1-1 matches the fifth surface 0-1-1 of the blade.

[0079] In this embodiment, when the middle part of the seventh side surface 2-2-1-1 and the fifth surface 0-1-1 of the blade are ideally in mutual contact, the position of the lower lobe 0-1 of the blade is the most accurate. However, considering inevitable errors such as actual welding errors and human operation errors when the operator places the lower lobe 0-1 of the blade, and to ensure the welding quality of the blade, the error gap between the fifth surface 0-1-1 of the lower lobe 0-1 of the blade and the middle part of the seventh side surface 2-2-1-1 is controlled between 2 and 10 mm. It can be designed that the middle part of the fifth surface 0-1-1 of the lower lobe 0-1 of the blade is in complete close contact with the seventh side surface 2-2-1-1, and the gap at both ends is controlled between 2 and 6 mm. It can also be designed that the two end parts of the fifth surface 0-1-1 of the lower lobe 0-1 of the blade are in complete close contact with the seventh side surface 2-2-1-1, and the gap in the middle part is controlled between 3 and 10 mm. By controlling a certain gap, the lower lobe 0-1 of the blade can be well positioned in the second groove of the support plate 2-2-1, and at the same time, a certain tolerance space is provided for the operator, which meets the requirements of the actual working conditions in the workshop.

[0080] In this embodiment, two lifting holes are provided on the support plate 2-2-1;

[0081] The second fixing plate 2-2-3 is located on both sides close to the seventh side surface 2-2-1-1 of the second groove and is fixedly connected to the support plate 2-2-1;

[0082] The first fixing plate 2-1-4 and the second fixing plate 2-2-3 are parallel to each other. The tail plate 0-4 of the blade is located between the first fixing plate 2-1-4 and the second fixing plate 2-2-3. The first fixing plate 2-1-4 is above the tail plate 0-4, and the second fixing plate 2-2-3 is below the tail plate 0-4. Threaded holes are provided on both the first fixing plate 2-1-4 and the second fixing plate 2-2-3; The screw rod 2-2-4 is located on both sides of the second groove and above the support plate 2-2-1, and the screw rod 2-2-4 is fixedly connected to the support plate 2-2-1; The screw rod 2-2-4 on the support plate 2-2-1 is installed in the guide tube 2-1-2 on the shaping plate 2-1-1, and the guide tube 2-1-2 can slide up and down relative to the screw rod 2-2-4.

[0083] In this embodiment, the screw rod 2-2-4 and the support plate 2-2-1 are connected by a steel plate; The screw rod 2-2-4 is vertically connected to the support plate 2-2-1. When the diameter of the screw rod 2-2-4 is greater than the thickness of the support plate 2-2-1, the screw rod 2-2-4 cannot be stably connected to the support plate 2-2-1. Therefore, the screw rod 2-2-4 and the support plate 2-2-1 are connected by a steel plate. The size of the steel plate is greater than the diameter of the screw rod 2-2-4 and greater than the thickness of the support plate 2-2-1. Therefore, the adaptability of the connection between the screw rod 2-2-4 and the support plate 2-2-1 is improved.

[0084] The support plate 2-2-1, the flat plate 2-2-2, the second fixing plate 2-2-3 and the screw rod 2-2-4 are fixed by welding;

[0085] A plurality of threaded blind holes are provided on the bottom plate 1, and a plurality of oval slots 2-2-2-1 are provided on the flat plate 2-2-2. The number of the threaded blind holes is the same as that of the oval slots 2-2-2-1 and their positions correspond one by one; The bottom plate 1 and the flat plate 2-2-2 are fixedly connected by screws and washers.

[0086] Insert the screw into the oval slot 2-2-2-1 on the flat plate 2-2-2 and the threaded blind hole on the bottom plate 1 to realize the fixed connection between the bottom plate 1 and the support 2;

[0087] In this embodiment, the flat plate 2-2-2 is rectangular in shape; the number of oval slots 2-2-2-1 on each flat plate 2-2-2 is 6, and the number of oval slots 2-2-2-1 can be determined according to the actual situation;

[0088] The number of the supports 2 is more than one, and adjacent supports 2 are connected by a connecting plate 3; the number of the side plates 2-1-3 is more than four, the number of the first fixing plates 2-1-4 and the second fixing plates 2-2-3 is more than two, and the numbers of the side plates 2-1-3, the first fixing plates 2-1-4 and the second fixing plates 2-2-3 are even numbers;

[0089] The number of the supports 2 is determined according to actual needs. In this embodiment, the number of the supports 2 is 6. Since the volume of the blade is large, when the blade is placed on the support plate 2-2-1, a single lower support plate 2-2 cannot fix the blade well. Therefore, multiple supports 2 are needed to provide more support points for the blade to stabilize the blade and prevent deformation during the welding process of the blade;

[0090] Weld the connecting plate 3 between the lower support plates 2-2, and weld 4 connecting plates 3 between adjacent support plates 2-2-1 to fix the supports 2;

[0091] In this embodiment, the number of the side plates 2-1-3 is 8, and there are 4 side plates 2-1-3 on each side of the fourth side surface 2-1-1-2 of the shaping plate 2-1-1, and they are evenly distributed;

[0092] In this embodiment, the number of the first fixing plates 2-1-4 is 2, and there is 1 first fixing plate 2-1-4 on each side of the fourth side surface 2-1-1-2 of the shaping plate 2-1-1, and the two first fixing plates 2-1-4 are in a plane;

[0093] The side plates 2-1-3 and the first fixing plates 2-1-4 are evenly and symmetrically installed on both sides close to the fourth side surface 2-1-1-2 of the shaping plate 2-1-1, and the second fixing plates 2-2-3 are evenly and symmetrically installed on both sides close to the seventh side surface 2-2-1-1 in the second groove.

[0094] A method for welding a blade by using a clamping anti-deformation device includes the following steps:

[0095] Step 1: Position and place the lower blade flap 0-1;

[0096] Step 2: Position the reinforcing rib plate 0-3 on the lower blade flap 0-1 and weld it in place;

[0097] Step 3: Fix the upper blade flap 0-2 on the lower blade flap 0-1 and weld it in place;

[0098] Step 4: Fix the tail plate 0-4 of the blade and weld the tail plate 0-4 to the tail of the blade;

[0099] Step 5: Take out the blade.

[0100] In Step 1, place the lower flap 0-1 of the blade in the second groove in the support plate 2-2-1. Among them, the curved surface five 0-1-1 on the lower flap 0-1 of the blade matches the middle part of the seventh side curved surface 2-2-1-1 in the second groove, realizing the positioning placement of the lower flap 0-1 of the blade;

[0101] In Step 2, install the screw 2-2-4 on the support plate 2-2-1 into the guide tube 2-1-2 on the shaping plate 2-1-1. At this time, the middle part of the third side curved surface 2-1-1-1 matches the curved surface two 0-1-2 on the lower flap 0-1 of the blade, and the first groove 2-1-1-3 on the shaping plate 2-1-1 points to the curved surface two 0-1-2 on the lower flap 0-1 of the blade. Place the reinforcing rib plate 0-3 in the first groove 2-1-1-3 and on the curved surface two 0-1-2 of the lower flap 0-1 of the blade, realizing the positioning of the reinforcing rib plate 0-3 on the lower flap 0-1 of the blade; Then fix the upper pressure plate 2-1 and the lower support plate 2-2 to clamp the lower flap 0-1 of the blade through nuts and washers, and fix the reinforcing rib plate 0-3 to the lower flap 0-1 of the blade by welding.

[0102] During the welding process, the upper pressure plate 2-1 and the lower support plate 2-2 are removed, which has the function of preventing deformation.

[0103] In Step 3, remove the nuts and washers on the screw 2-2-4 and the guide tube 2-1-2, separate the upper pressure plate 2-1 on the support 2 from the lower support plate 2-2, then place the upper flap 0-2 of the blade on the lower flap 0-1 of the blade, flip the shaping plate 2-1-1 by 180° and install the screw 2-2-4 on the support plate 2-2-1 into the guide tube 2-1-2 on the shaping plate 2-1-1 so that the middle part of the fourth side curved surface 2-1-1-2 fits the curved surface one 0-2-1 of the upper flap 0-2 of the blade. Fix the upper pressure plate 2-1 and the lower support plate 2-2 to clamp the upper flap 0-2 and the lower flap 0-1 of the blade through nuts and washers, and fix the lower flap 0-1 and the upper flap 0-2 of the blade by welding.

[0104] During the welding process, the upper pressure plate 2-1 and the lower support plate 2-2 are removed, which has the function of preventing deformation.

[0105] In Step 4, place the tail plate 0-4 of the blade at the tail of the blade and between the first fixing plate 2-1-4 and the second fixing plate 2-2-3, then pass the screw through the screw holes on the first fixing plate 2-1-4 and the second fixing plate 2-2-3 to fix the tail plate 0-4 of the blade, and weld the tail plate 0-4 to the tail of the blade by welding;

[0106] In this embodiment, the screw is preferably a long-focus set screw; long-focus set screws are provided at both the upper and lower ends of the tail plate 0-4. The long-focus set screw at the upper end is installed in the first fixing plate 2-1-4 of the upper pressing plate 2-1, and the long-focus set screw at the lower end is installed in the second fixing plate 2-2-3 of the lower support plate 2-2. At the same time, by adjusting the protruding length of the long-focus set screw, the tail plate 0-4 can be installed and fixed on the blade, and the function of adjusting the angular deflection of the tail plate 0-4 relative to the blade can be realized. It also has the function of preventing deformation during welding.

[0107] Step Five: Remove the nuts and washers on the screw rod 2-2-4 and the guide tube 2-1-2, separate the upper pressing plate 2-1 on the support 2 from the lower support plate 2-2, and take out the welded blade.

Claims

1. A clamping and anti-deformation device for welded blades, characterized in that It includes a bottom plate (1) and a support (2). The support (2) is located above the bottom plate (1). The support (2) includes an upper pressing plate (2-1) and a lower support plate (2-2). The upper pressing plate (2-1) is located above the lower support plate (2-2). The blade is located in the gap between the upper pressing plate (2-1) and the lower support plate (2-2). The shape of the blade is crescent-shaped, including an upper blade flap (0-2), a lower blade flap (0-1), and a tail plate (0-4). The upper blade flap (0-2) is located above the lower blade flap (0-1). A reinforcing rib plate (0-3) is provided between the upper blade flap (0-2) and the lower blade flap (0-1), dividing the inner cavity of the lower blade flap (0-1) into a left cavity and a right cavity. The two ends of the upper blade flap (0-2) and the lower blade flap (0-1) are fixedly connected. The tail plate (0-4) is located at the end where the upper blade flap (0-2) and the lower blade flap (0-1) are fixedly connected. The outer surface of the upper part of the upper blade flap (0-2) is a first curved surface (0-2-1). The inner surface of the upper part of the lower blade flap (0-1) is a second curved surface (0-1-2). The inner surface of the upper part of the left cavity of the lower blade flap (0-1) is a third curved surface (0-1-3). The inner surface of the upper part of the right cavity of the lower blade flap (0-1) is a fourth curved surface (0-1-4). The second curved surface (0-1-2) includes the third curved surface (0-1-3) and the fourth curved surface (0-1-4). The outer surface of the lower part of the lower blade flap (0-1) is a fifth curved surface (0-1-1). The upper pressing plate (2-1) includes a shaping plate (2-1-1), a plurality of guide tubes (2-1-2), a plurality of side plates (2-1-3), and a plurality of first fixing plates (2-1-4). The side surface of the shaping plate (2-1-1) is an irregular curved surface, including a first side curved surface, a second side curved surface, a third side curved surface (2-1-1-1), and a fourth side curved surface (2-1-1-2). The first side curved surface is located on the left side of the shaping plate (2-1-1). The second side curved surface is located on the right side of the shaping plate (2-1-1). The middle part of the third side curved surface (2-1-1-1) matches the second curved surface (0-1-2) of the blade. The middle part of the fourth side curved surface (2-1-1-2) matches the first curved surface (0-2-1) of the blade. The guide tubes (2-1-2) are located on the left and right sides of the shaping plate (2-1-1), and are respectively connected to the first side curved surface and the second side curved surface. The side plates (2-1-3) and the first fixing plates (2-1-4) are located on both sides close to the fourth side curved surface (2-1-1-2) of the shaping plate (2-1-1) and are fixedly connected to the shaping plate (2-1-1).A first groove (2-1-1-3) is provided in the shaping plate (2-1-1). The cross-sectional shape of the first groove (2-1-1-3) is rectangular. The first groove (2-1-1-3) divides the middle part of the third side surface (2-1-1-1) into two parts, namely a fifth side surface (2-1-1-4) and a sixth side surface (2-1-1-5). The first groove (2-1-1-3) matches with the reinforcing rib plate (0-3) between the blades. The fifth side surface (2-1-1-4) matches with the third surface (0-1-3) of the blade. The sixth side surface (2-1-1-5) matches with the fourth surface (0-1-4) of the blade. The included angle between the first groove (2-1-1-3) and the tangent line at the intersection of the first groove (2-1-1-3) and the sixth side surface (2-1-1-5) is a°. The lower support plate (2-2) includes a support plate (2-2-1). The overall contour of the support plate (2-2-1) is rectangular. A second groove is provided in the middle of the upper part of the support plate (2-2-1), and the corresponding surface is a seventh side surface (2-2-1-1). The middle part of the seventh side surface (2-2-1-1) matches with the fifth surface (0-1-1) of the blade.

2. The welding blade clamping anti-deformation device according to claim 1, characterized in that, The lower support plate (2-2) further includes a flat plate (2-2-2), a second fixing plate (2-2-3), and a screw (2-2-4); the support plate (2-2-1) is located above the flat plate (2-2-2) and is fixedly connected to the flat plate (2-2-2), the second fixing plate (2-2-3) is located on both sides close to the seventh side surface (2-2-1-1) in the second groove and is fixedly connected to the support plate (2-2-1); the first fixing plate (2-1-4) and the second fixing plate (2-2-3) are parallel to each other, the tail plate (0-4) of the blade is located between the first fixing plate (2-1-4) and the second fixing plate (2-2-3), the first fixing plate (2-1-4) is above the tail plate (0-4), the second fixing plate (2-2-3) is below the tail plate (0-4), and screw holes are formed in both the first fixing plate (2-1-4) and the second fixing plate (2-2-3); the screw (2-2-4) is located on both sides of the second groove and above the support plate (2-2-1), and the screw (2-2-4) is fixedly connected to the support plate (2-2-1); the screw (2-2-4) on the support plate (2-2-1) is installed in the guide tube (2-1-2) on the shaping plate (2-1-1), and the guide tube (2-1-2) can slide up and down relative to the screw (2-2-4).

3. The clamping and anti-deformation device for welded blades according to claim 2, characterized in that A plurality of threaded blind holes are provided on the bottom plate (1), and a plurality of oval slots (2-2-2-1) are provided on the flat plate (2-2-2); the number of the threaded blind holes is the same as that of the oval slots (2-2-2-1) and their positions correspond one by one; the bottom plate (1) and the flat plate (2-2-2) are fixedly connected by screws and washers.

4. The clamping and deformation prevention device for welded blades according to claim 3, wherein, The number of the supports (2) is more than one, and adjacent supports (2) are connected by a connecting plate (3); the number of the side plates (2-1-3) is more than four, the number of the first fixing plates (2-1-4) and the second fixing plates (2-2-3) is more than two, and the number of the side plates (2-1-3), the first fixing plates (2-1-4) and the second fixing plates (2-2-3) is an even number; the side plates (2-1-3) and the first fixing plates (2-1-4) are evenly and symmetrically installed on both sides close to the fourth side surface (2-1-1-2) of the shaping plate (2-1-1), and the second fixing plates (2-2-3) are evenly and symmetrically installed on both sides close to the seventh side surface (2-2-1-1) in the second groove.

5. A method for welding blades using the anti-deformation device for clamping welded blades as described in claim 4, characterized in that It includes the following steps: Step 1: Position and place the lower lobe (0-1) of the blade; Step 2: Position the reinforcing rib plate (0-3) on the lower lobe (0-1) of the blade and weld it in place; Step 3: Fix the upper lobe (0-2) of the blade on the lower lobe (0-1) of the blade and weld it in place; Step 4: Fix the tail plate (0-4) of the blade and weld the tail plate (0-4) to the tail of the blade; Step 5: Take out the blade.

6. The method for welding blades according to claim 5, characterized in that, In Step 1, place the lower blade flap (0-1) in the second groove of the support plate (2-2-1). Here, the fifth curved surface (0-1-1) on the lower blade flap (0-1) matches the middle part of the seventh side curved surface (2-2-1-1) in the second groove, achieving the positioning and placement of the lower blade flap (0-1). In Step 2, install the screw (2-2-4) on the support plate (2-2-1) into the guide tube (2-1-2) on the shaping plate (2-1-1). At this time, the middle part of the third side curved surface (2-1-1-1) matches the second curved surface (0-1-2) on the lower blade flap (0-1), and the first groove (2-1-1-3) on the shaping plate (2-1-1) points to the second curved surface (0-1-2) on the lower blade flap (0-1). Place the reinforcing rib plate (0-3) in the first groove (2-1-1-3) and on the second curved surface (0-1-2) of the lower blade flap (0-1), achieving the positioning of the reinforcing rib plate (0-3) on the lower blade flap (0-1). Then, fix the upper pressing plate (2-1) and the lower support plate (2-2) with nuts and washers to clamp the lower blade flap (0-1), and fixedly connect the reinforcing rib plate (0-3) and the lower blade flap (0-1) by welding.

7. The method for welding blades according to claim 6, wherein, In Step 3, remove the nuts and washers on the screw (2-2-4) and the guide tube (2-1-2), separate the upper pressing plate (2-1) on the support (2) from the lower support plate (2-2). Then, place the upper blade flap (0-2) on the lower blade flap (0-1), flip the shaping plate (2-1-1) by 180° and install the screw (2-2-4) on the support plate (2-2-1) into the guide tube (2-1-2) on the shaping plate (2-1-1) so that the middle part of the fourth side curved surface (2-1-1-2) fits the first curved surface (0-2-1) of the upper blade flap (0-2). Fix the upper pressing plate (2-1) and the lower support plate (2-2) with nuts and washers to clamp the upper blade flap (0-2) and the lower blade flap (0-1), and fixedly connect the lower blade flap (0-1) and the upper blade flap (0-2) by welding.

8. The method for welding blades according to claim 7, characterized in that, In Step 4, place the tail plate (0-4) of the blade at the tail of the blade and between the first fixing plate (2-1-4) and the second fixing plate (2-2-3). Then, pass the screw through the screw holes on the first fixing plate (2-1-4) and the second fixing plate (2-2-3) to fix the tail plate (0-4) of the blade, and weld the tail plate (0-4) to the tail of the blade by welding. Step 5: Remove the nuts and washers on the screw (2-2-4) and the guide tube (2-1-2), separate the upper pressing plate (2-1) on the support (2) from the lower support plate (2-2), and take out the welded blade.

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