Wind power blade pultrusion plate shape follow-up tensioning device

Abstract

The utility model relates to the technical field of wind power blade plates, and discloses a wind power blade pultrusion plate shape follow-up tensioning device which comprises a frame body, a tensioning structure used for tensioning a wind power blade plate is arranged in the frame body, the tensioning structure comprises a plurality of movable plates fixed in the frame body, every two of the movable plates form a group, and the movable plates are arranged in the frame body. Two first air bags are fixed to the sides, close to each other, of the two corresponding movable plates in each set, and a plurality of mounting grooves are formed in the inner bottom face of the frame body. Through the arrangement of the tensioning structure, an operator places a wind power blade plate between the two movable plates in each group, the motor is started to drive the rotating rod and the bidirectional threads, so that the movable strips are close to each other, the abutting plate is pushed through the connecting shaft to clamp the arc center of the plate, and pre-positioning is completed. And then, the first air bag is inflated through external equipment, the air bag expands to be attached to the surface of the blade, the clamping gap is filled, flexible and uniform tensioning is achieved, and the clamping stability and the machining precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade sheet technology, and in particular to a conformal tensioning device for pultruded sheets of wind turbine blades. Background Technology

[0002] Wind turbine blades are the core components of wind turbine units that convert natural wind energy into electrical energy. They are also the main basis for measuring the design and technical level of wind turbine units. In order to ensure the stability of the pultruded sheets of wind turbine blades during transportation, it is necessary to use a conformal tensioning device to perform conformal clamping and positioning work on the pultruded sheets of wind turbine blades.

[0003] An existing conformal tensioning device for pultruded sheet metal of wind turbine blades (publication number: CN217533774U) has at least the following drawbacks: Although the above device tensions and fixes the wind turbine blade sheet metal through springs and rubber conformal pads, the tensioning of the device mainly relies on the passive bonding of springs and rubber pads. The rubber conformal pads are prone to aging during long-term use, resulting in reduced elasticity and affecting the bonding effect. At the same time, during the tensioning process, the edges of the rubber pads are prone to indentation due to local stress, and gaps are easily formed in the central area, making it impossible to achieve uniform bonding to the surface of the sheet metal, thereby affecting the overall clamping stability and usage effect. Therefore, we propose this utility model. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a conformal tensioning device for pultruded sheet metal of wind turbine blades.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A conformal tensioning device for pultruded sheet material of wind turbine blades includes a frame. The frame has an internal tensioning structure for tensioning the wind turbine blade sheet material. The tensioning structure includes several movable plates fixed inside the frame. The movable plates are arranged in pairs. Two first airbags are fixed on the side of each pair of movable plates that are close to each other. The bottom surface of the frame has several mounting grooves that are interconnected. A rotating rod is rotatably installed inside the mounting groove. The outer circular wall of the rotating rod has several sets of bidirectional threads. Each set of bidirectional threads has a movable bar threaded to both the forward and reverse threads.

[0007] As a further embodiment of this utility model, several movable strips are slidably disposed within the corresponding mounting grooves, and several movable strips are located between several sets of movable plates. A connecting shaft is fixed to one side of the movable plate, and the connecting shaft passes through one side of the corresponding movable plate and is fixed with an abutment plate. The abutment plate is located between two corresponding first airbags. A motor is fixed to one side of the frame, and the output end of the motor passes through one side of the frame and is fixed to one end of the rotating rod.

[0008] As a further embodiment of this utility model, a second airbag is fixed between the two movable plates, and the second airbag is fixed to the inner bottom surface of the frame.

[0009] As a further embodiment of this utility model, the inner top surface of the frame is open, and a fixing strip is fixed to the top surface of the frame by bolts.

[0010] As a further embodiment of this utility model, fixing holes are provided on both sides of the frame.

[0011] As a further embodiment of this utility model, a number of support plates are fixed on the inner bottom surface of the frame, and storage slots are provided on both sides of the support plates. The movable strip is slidably inserted into the interior of the corresponding storage slot.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This tensioning device, through its tensioning structure, allows operators to place wind turbine blade plates between two movable plates in each group. Starting the motor drives the rotating rod and bidirectional thread, bringing the movable plates closer together. The connecting shaft then pushes the abutment plate to clamp the plate's arc-shaped center, completing the pre-positioning. Subsequently, external equipment inflates the first airbag, causing it to expand and conform to the blade surface, filling the clamping gaps and achieving flexible, uniform tension, thus improving clamping stability and processing accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the conformal tensioning device for pultruded sheet material of wind turbine blades proposed in this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled structure of a conformal tensioning device for pultruded sheet material of wind turbine blades proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembled structure of the frame of the conformal tensioning device for pultruded sheet material of wind turbine blades proposed in this utility model;

[0017] Figure 4 This is a schematic diagram of the disassembled structure at the movable plate of the conformal tensioning device for pultruded sheet of wind turbine blade proposed in this utility model;

[0018] Figure 5 This is a schematic diagram of the disassembled structure of the movable strip of the conformal tensioning device for pultruded sheet material of wind turbine blades proposed in this utility model.

[0019] In the diagram: 1. Frame; 2. Movable plate; 201. First airbag; 202. Mounting groove; 203. Rotating rod; 204. Bidirectional thread; 205. Abutment plate; 206. Movable strip; 207. Connecting shaft; 3. Second airbag; 4. Fixing strip; 5. Fixing hole; 6. Support plate; 601. Storage groove. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Reference Figures 1-5 A conformal tensioning device for pultruded sheet material of wind turbine blades includes a frame 1. The frame 1 has a tensioning structure inside for tensioning the sheet material of the wind turbine blade. The tensioning structure includes several movable plates 2 fixed inside the frame 1. The movable plates 2 are arranged in pairs. On the side of each pair of movable plates 2 that are close to each other, there are two first airbags 201. The bottom surface of the frame 1 has several mounting grooves 202 that are interconnected. A rotating rod 203 is rotatably arranged inside the mounting groove 202. The outer circular wall of the rotating rod 203 has several sets of bidirectional threads 204. Each set of bidirectional threads 204 has a movable strip 206 threadedly connected to the forward and reverse threads.

[0024] In this embodiment, several movable strips 206 are slidably disposed within the corresponding mounting slots 202. These movable strips 206 are located between several sets of movable plates 2. A connecting shaft 207 is fixed to one side of each movable plate 2. The connecting shaft 207 passes through one side of the corresponding movable plate 2 and is fixed with an abutment plate 205. The abutment plate 205 is located between two corresponding first airbags 201. A motor is fixed to one side of the frame 1. The output end of the motor passes through one side of the frame 1 and is fixed to one end of the rotating rod 203. The motor is a self-locking motor, controlled by an external controller. The power required for the motor can be supplied by an external battery or other external power source, which is common technical knowledge and will not be elaborated further here. Through the tensioning structure, the operator can separate multiple wind turbine blade plates. Do not place it between the two movable plates 2 of each group. Start the motor to drive the rotating rod 203 to rotate. The rotating rod 203 drives the corresponding movable strips 206 to move closer to each other through several sets of bidirectional threads 204. When the two corresponding movable strips 206 move closer to each other, they push the two abutment plates 205 to move closer to each other through the connecting shaft 207, clamping the wind turbine blade plate at the arc-shaped center position between the two movable plates 2. This completes the pre-clamping and positioning of the wind turbine blade plate. After the pre-clamping is completed, the operator inflates the first airbag 201 through the external inflation device. After the first airbag 201 expands, it forms a close contact with the surface of the wind turbine blade plate, effectively filling the tiny gaps between the plate and the clamping structure, achieving a more uniform and flexible wrap-around tension fixation, and improving clamping stability and processing accuracy.

[0025] In this embodiment, a second airbag 3 is fixed between the two movable plates 2. The second airbag 3 is fixed to the inner bottom surface of the frame 1. When the wind turbine blade plate is placed between the two movable plates 2, the operator can inflate the second airbag 3 through an external inflation device. The second airbag 3 flexibly wraps the bottom of the plate. After the second airbag 3 is inflated, it is in an unsaturated state to avoid interfering with the inflation and tightening of the first airbag 201.

[0026] In this embodiment, the top surface of the frame 1 is open, and the top surface of the frame 1 is fixed with a fixing strip 4 by bolts. When placing the wind turbine blade plate, the operator can put the plate in through the open top surface of the frame 1, and after tightening, the frame 1 is closed by bolts and fixing strip 4.

[0027] In this embodiment, fixing holes 5 are provided on both sides of the frame 1, and the operator can use bolts to fix the position of the frame 1 through the fixing holes 5.

[0028] In this embodiment, several support plates 6 are fixed on the inner bottom surface of the frame 1. Storage slots 601 are provided on both sides of the support plates 6. The movable strip 206 is slidably inserted into the corresponding storage slot 601. The storage slot 601 can store and protect the movable strip 206.

[0029] Working Principle: In use, the operator places multiple wind turbine blade plates between the two movable plates 2 of each group. The motor is started, driving the rotating rod 203 to rotate. The rotating rod 203, through several sets of bidirectional threads 204, drives the corresponding movable strips 206 to move closer together. When two corresponding movable strips 206 move closer together, the connecting shaft 207 pushes the two abutment plates 205 closer together, clamping the wind turbine blade plate at the arc-shaped center position between the two movable plates 2. This completes the pre-clamping and positioning of the wind turbine blade plate. After pre-clamping, the operator inflates the first airbag 201 using an external inflation device. The inflated first airbag 201 forms a tight contact with the surface of the wind turbine blade plate, effectively... The tiny gaps between the filling plate and the clamping structure enable a more uniform and flexible wrapping-type tensioning fixation. After the wind turbine blade plate is placed between the two movable plates 2, the operator can inflate the second airbag 3 through an external inflation device. The second airbag 3 flexibly wraps the bottom of the plate. The second airbag 3 is in an unsaturated state after inflation to avoid interfering with the inflation and tensioning of the first airbag 201. When placing the wind turbine blade plate, the operator can put the plate in through the opening on the top surface of the frame 1. After tensioning, the frame 1 is closed by bolts and fixing strips 4. The operator can fix the position of the frame 1 through the fixing holes 5 using bolts. The storage groove 601 can store and protect the movable strip 206.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A conformal tensioning device for pultruded sheet metal of wind turbine blades, comprising a frame (1), characterized in that: The frame (1) is provided with a tensioning structure for tensioning the wind turbine blade plate. The tensioning structure includes several movable plates (2) fixed inside the frame (1). The movable plates (2) are arranged in pairs. Each pair of movable plates (2) has two first airbags (201) fixed on the side of each pair of movable plates (2) that are close to each other. The bottom surface of the frame (1) is provided with several mounting grooves (202). The mounting grooves (202) are connected to each other. The mounting grooves (202) are rotatably provided with rotating rods (203). The outer circular wall of the rotating rods (203) is provided with several sets of bidirectional threads (204). Each set of bidirectional threads (204) is threaded with movable bars (206) in both directions.

2. The conformal tensioning device for pultruded sheet material of wind turbine blades according to claim 1, characterized in that, Several movable strips (206) are respectively slidably disposed inside the corresponding mounting slots (202). Several movable strips (206) are respectively located between several sets of movable plates (2). A connecting shaft (207) is fixed on one side of the movable plate (2). The connecting shaft (207) passes through one side of the corresponding movable plate (2) and is fixed with an abutment plate (205). The abutment plate (205) is located between two corresponding first airbags (201). A motor is fixed on one side of the frame (1). The output end of the motor passes through one side of the frame (1) and is fixed to one end of the rotating rod (203).

3. The conformal tensioning device for pultruded sheet material of wind turbine blades according to claim 2, characterized in that, A second airbag (3) is fixed between the two movable plates (2), and the second airbag (3) is fixed to the inner bottom surface of the frame (1).

4. The conformal tensioning device for pultruded sheet material of wind turbine blades according to claim 3, characterized in that, The top surface of the frame (1) is open, and the top surface of the frame (1) is fixed with a fixing strip (4) by bolts.

5. The conformal tensioning device for pultruded sheet material of wind turbine blades according to claim 4, characterized in that, Fixing holes (5) are provided on both sides of the frame (1).

6. The conformal tensioning device for pultruded sheet material of wind turbine blades according to claim 5, characterized in that, The inner bottom surface of the frame (1) is fixed with several support plates (6), and storage slots (601) are provided on both sides of the support plates (6). The movable strip (206) is slidably inserted into the corresponding storage slot (601).

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