Fan blade repairing and polishing device

Abstract

The utility model discloses a fan blade repairing and polishing device and belongs to the technical field of blade repairing and polishing. The polishing coefficient of a replaceable polishing connecting clamp ranges from 0.1 micrometer to 0.03 micrometer. The outer wall of the replaceable grinding connecting clamp is sleeved with a polishing block, a semi-solid polishing agent is arranged at the outer end of the replaceable grinding connecting clamp, a butt joint bin matched with the replaceable grinding connecting clamp and the semi-solid polishing agent is formed in the inner wall of the polishing block, and blade repairing and grinding operation is achieved through the polishing block. According to the fan blade repairing and polishing device, the polishing coefficient of the replaceable polishing connecting clamp is controlled within a high-precision range, and fine processing of the surface of a fan blade is guaranteed. And the polishing block cooperates with the replaceable polishing connecting clamp and the polishing agent, so that the polishing efficiency and the blade surface smoothness are improved. The protective cover is tightly connected with the connecting shaft, and operation safety is guaranteed. The hole site design reduces friction and resistance, operation is smooth, and loss is low. Operators can adjust the rotating speed and the angle to meet different requirements. The design facilitates maintenance and replacement of components.

Description

Technical Field

[0001] The utility model relates to the technical field of blade repair and grinding, in particular to a repair and grinding device for wind turbine blades. Background Art

[0002] The repair and grinding device for wind turbine blades, as a key auxiliary equipment in the field of wind power generation, its core function is to efficiently and safely restore the original performance of wind turbine blades. In a wind power generation unit, the performance of the blades is directly related to the power generation efficiency. During long-term use, the surface of the blades may be worn and corroded due to environmental erosion, and professional repair is urgently needed.

[0003] However, the repair and grinding devices currently on the market face a significant challenge: for wind turbine blades of different specifications, their repair and grinding coefficients are different, making a single grinding disc difficult to meet the diverse repair needs. This problem not only requires frequent replacement of the grinding disc to adapt to blades of different specifications, but also greatly increases the complexity of operation, time cost and maintenance cost.

[0004] Specifically, replacing the grinding disc requires delicate operation by professional personnel, including multiple steps such as disassembly, installation and adjustment. This may not only bring the risk of equipment damage due to operation errors, but also extend the repair cycle and reduce the overall production efficiency. In addition, enterprises need to reserve multiple grinding discs for blades of different specifications, which undoubtedly increases the inventory burden and management difficulty.

[0005] Therefore, developing a repair and grinding device that can flexibly adapt to wind turbine blades of various specifications, reduce the replacement cost and improve the repair efficiency is of great significance for promoting the sustainable development of the wind power generation industry. Summary of the Invention

[0006] The main purpose of the utility model is to provide a repair and grinding device for wind turbine blades, which can effectively solve the problems put forward in the background art.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] A repair and grinding device for wind turbine blades includes a machine body, a machine head, a protective cover, a connecting shaft and a grinding disc. The machine head is located at the front end of the machine body. The connecting shaft is divided into an outer shaft and an inner shaft. The outer shaft is fixed on the machine head. The inner shaft is a rotating shaft. The grinding disc is connected to the output end of the machine head through the inner shaft. The protective cover is connected to the outer shaft. A servo motor inside the machine body drives the grinding disc to rotate to realize the grinding operation of the wind turbine blade;

[0009] A cavity is formed inside the protective cover. There is a gap between the grinding disc and the cavity. Mounting holes are provided at the end face edge of the grinding disc. A replaceable grinding connection clip is installed at the mounting holes. A docking hole adapted to the mounting holes is provided on the replaceable grinding connection clip. Bolts are inserted into the mounting holes and the docking holes to connect the replaceable grinding connection clip to the grinding disc. The grinding coefficient of the replaceable grinding connection clip ranges from 0.1 μm to 0.03 μm;

[0010] A polishing block is sleeved on the outer wall of the replaceable grinding connection clip. A semi-solid polishing agent is provided at the outer end of the replaceable grinding connection clip. A docking chamber adapted to the replaceable grinding connection clip and the semi-solid polishing agent is provided on the inner wall of the polishing block. The blade repair grinding operation is realized through the polishing block.

[0011] As a preferred solution of the present utility model, there is a gap between the protective cover and the polishing block. The cross-section of the polishing block is designed in a "C" shape, and the curvature of the polishing block is adapted to that of the grinding disc;

[0012] As a preferred solution of the present utility model, the inner walls of the mounting holes and the docking holes are designed to be smooth, and the orifices of the mounting holes and the docking holes are designed to be arc-shaped. A rubber strip is provided between the replaceable grinding connection clip and the grinding disc. The outer surface of the replaceable grinding connection clip is a grinding surface;

[0013] As a preferred solution of the present utility model, the outer edge of the replaceable grinding connection clip is designed in a "C" shape. The semi-solid polishing agent is pressed on the outer edge of the replaceable grinding connection clip, and the cross-section of the semi-solid polishing agent is designed in a "C" shape;

[0014] As a preferred solution of the present utility model, the polishing block is adhesively connected to the replaceable grinding connection clip, and the polishing block completely covers the replaceable grinding connection clip. The outer edge of the polishing block is designed in a "C" shape;

[0015] As a preferred solution of the present utility model, the semi-solid polishing agent is any one of stainless steel cleaning paste and stainless steel cleaning wax.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] In the present utility model, we have strictly regulated the grinding coefficient of the replaceable grinding connection clip to ensure that it fluctuates within the range of 0.1 μm to 0.03 μm. This measure greatly improves the accuracy of the grinding operation and provides a refined treatment for the surface of the fan blade. In addition, the perfect coordination among the polishing block, the replaceable grinding connection clip and the semi-solid polishing agent makes the whole grinding process smooth and efficient, significantly improving the smoothness and brightness of the blade surface.

[0018] Meanwhile, our protective cover is tightly connected to the outer shaft of the connecting shaft, forming a solid safety defense line that effectively protects the operator from potential threats posed by rotating components. The smooth design and arc-shaped orifice design of the mounting holes and docking holes not only reduce friction and resistance during operation, improve overall smoothness, but also significantly reduce losses.

[0019] To better meet the repair requirements of different fan blades, our device allows operators to flexibly adjust the rotation speed and angle of the grinding disc according to actual situations. In addition, the design of the device fully considers the convenience of maintaining and replacing components, thereby effectively reducing maintenance costs and time and improving overall usage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a side view of the overall structure of the present utility model;

[0022] Figure 3 is a display diagram of the overall structure of the present utility model;

[0023] Figure 4 is an exploded view of the grinding disc, replaceable grinding connection clip and polishing block of the present utility model.

[0024] In the figures: 1, body; 2, machine head; 3, protective cover; 4, cavity; 5, connecting shaft; 6, grinding disc; 7, mounting holes; 8, replaceable grinding connection clip; 9, docking holes; 10, polishing block; 11, docking bin; 12, semi-solid polishing agent. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] As Figure 1 - Figure 4 shown, a device specifically for repairing and grinding fan blades, which has a perfect structure and clear functions, mainly includes the following core components, namely: body 1, machine head 2, protective cover 3, connecting shaft (divided into an outer shaft and an inner shaft), and grinding disc 6. Among them, the machine head 2 is firmly arranged at the front end of the body 1 and serves as the operation core of the entire device. The ingenious design of the connecting shaft 5 enables its outer shaft to be firmly fixed on the machine head 2, while the inner shaft serves as a rotating shaft and is tightly connected to the grinding disc 6, thus ensuring that the grinding disc 6 can rotate smoothly.

[0027] The protective cover 3 is tightly connected to the outer shaft of the connecting shaft 5, forming a safety barrier. Inside the machine body 1, a powerful servo motor drives the grinding disc 6 to rotate at high speed, thus achieving fine grinding of the fan blades. It is worth noting that there is a cavity 4 inside the protective cover 3, and there is a certain gap between this cavity 4 and the grinding disc 6. This design not only ensures the smooth progress of the grinding operation but also avoids unnecessary friction and wear.

[0028] Installation hole positions 7 are cleverly opened at the end face edge of the grinding disc 6. These hole positions are used to install the replaceable grinding connection clip 8. The replaceable grinding connection clip 8 is also provided with docking hole positions 9 that perfectly match the installation hole positions 7. Through the insertion and tightening of bolts, the replaceable grinding connection clip 8 is firmly fixed on the grinding disc 6. Particularly worth mentioning is that the grinding coefficient of the replaceable grinding connection clip 8 is precisely controlled between 0.1μm and 0.03μm, ensuring extremely high precision of the grinding operation.

[0029] To further improve the grinding effect, a polishing block 10 is sleeved on the outer wall of the replaceable grinding connection clip 8. The inner wall of the polishing block 10 is specially designed with a docking bin 11 that is adapted to the replaceable grinding connection clip 8 and the semi-solid polishing agent 12, making the entire polishing process smoother and more efficient. In addition, the cross-section of the polishing block 10 adopts a unique "C" - shaped design. This design is not only beautiful and generous but also perfectly fits the arc of the grinding disc 6, further improving the precision and effect of grinding.

[0030] At the outer end of the replaceable grinding connection clip 8, there is also a semi-solid polishing agent 12. This polishing agent can be either stainless steel cleaning paste or stainless steel cleaning wax. Its cross-section also has a "C" - shaped design and is tightly pressed against the outer edge of the replaceable grinding connection clip 8. When the polishing block 10 is adhesively connected to the replaceable grinding connection clip, the semi-solid polishing agent 12 can play its maximum role during the grinding process, bringing a smoother and brighter surface to the fan blades.

[0031] In addition, the device also pays attention to the design of details. The hole walls of the installation hole positions 7 and the docking hole positions 9 are both designed to be smooth, and the hole openings are in an arc shape. These designs are all aimed at reducing friction and resistance and improving the smoothness of operation. At the same time, sealing elements such as rubber strips are provided between the replaceable grinding connection clip 8 and the grinding disc 6 to prevent the intrusion of dust and impurities. The outer surface of the replaceable grinding connection clip 8 is designed as a grinding surface to fully contact and play a role with the blade surface during the grinding process.

[0032] This fan blade repair and grinding device is not only compact in structure and perfect in function but also pays attention to detail design and material selection. It can provide an efficient and precise solution for the repair and grinding of fan blades and is one of the indispensable important devices in the wind power industry.

[0033] Working process: According to the repair requirements of the fan blade, select a suitable semi-solid polishing agent 12, such as stainless steel cleaning paste or stainless steel cleaning wax, and ensure that its cross-section is designed in a "C" shape so as to tightly press against the outer edge of the replaceable grinding connection clip 8. Align the replaceable grinding connection clip 8 with the mounting hole position 7 on the grinding disc 6 through the docking hole position 9 thereon, and fasten it with bolts to ensure that the replaceable grinding connection clip 8 is firmly fixed on the grinding disc 6. The grinding coefficient of the replaceable grinding connection clip 8 is precisely controlled between 0.1 μm and 0.03 μm to ensure the grinding accuracy.

[0034] Sheathe a polishing block 10 on the outer wall of the replaceable grinding connection clip 8, and ensure that the docking bin 11 of the polishing block 10 is adapted to the replaceable grinding connection clip 8 and the semi-solid polishing agent 12. The "C"-shaped cross-section design of the polishing block 10 perfectly fits the curvature of the grinding disc 6, preparing for efficient grinding. Connect the power supply, and the servo motor inside the machine body 1 starts to work, driving the inner shaft of the connecting shaft 5 to rotate, and then driving the grinding disc 6 and the replaceable grinding connection clip 8 and the polishing block 10 thereon to rotate at high speed.

[0035] The operator covers the area of the fan blade that needs to be repaired with the protective cover 3. The protective cover 3 is tightly connected to the outer shaft of the connecting shaft 5 to form a safety barrier. As the grinding disc 6 rotates, the outer surface of the replaceable grinding connection clip 8 serves as the grinding surface and comes into full contact with the blade surface. At the same time, the semi-solid polishing agent 12 is gradually released under the action of the polishing block 10 to finely grind and polish the blade surface. During the grinding process, the operator can adjust the rotation speed and angle of the grinding disc 6 as needed to obtain the best grinding effect. At the same time, due to the precise control of the grinding coefficient of the replaceable grinding connection clip 8 and the synergistic effect of the polishing block 10 and the semi-solid polishing agent 12, the extremely high precision and efficiency of the grinding operation can be ensured.

[0036] When the surface of the fan blade reaches the required repair and grinding effect, turn off the power supply and stop the device from working. The operator can check the grinding effect and carry out necessary subsequent processing or cleaning work. This fan blade repair and grinding device can efficiently and accurately complete the repair and grinding tasks of fan blades, providing strong support for the maintenance work in the wind power industry.

[0037] It should be noted that, in this text, relational terms such as first and second (No. 1, No. 2, etc.) are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed for the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fan blade repair and grinding device, comprising a machine body (1), a machine head (2), a protective cover (3), a connecting shaft (5) and a grinding disc (6). The machine head (2) is located at the front end of the machine body (1). The connecting shaft (5) is divided into an outer shaft and an inner shaft. The outer shaft is fixed on the machine head (2), and the inner shaft is a rotating shaft. The grinding disc (6) is connected to the output end of the machine head (2) through the inner shaft. The protective cover (3) is connected to the outer shaft. A servo motor inside the machine body (1) drives the grinding disc (6) to rotate to realize the grinding operation of the fan blade. It is characterized in that: A cavity (4) is formed inside the protective cover (3). There is a gap between the grinding disc (6) and the cavity (4). Mounting hole positions (7) are provided at the end face edge of the grinding disc (6). A replaceable grinding connection clip (8) is mounted at the mounting hole positions (7). A docking hole position (9) adapted to the mounting hole positions (7) is provided on the replaceable grinding connection clip (8). The mounting hole positions (7) and the docking hole positions (9) are inserted with bolts to connect the replaceable grinding connection clip (8) to the grinding disc (6). The grinding coefficient of the replaceable grinding connection clip (8) is from 0.1 μm to 0.03 μm; A polishing block (10) is sleeved on the outer wall of the replaceable grinding connection clip (8). A semi-solid polishing agent (12) is provided at the outer end of the replaceable grinding connection clip (8). A docking cavity (11) adapted to the replaceable grinding connection clip (8) and the semi-solid polishing agent (12) is provided on the inner wall of the polishing block (10). The blade repair grinding operation is realized through the polishing block (10).

2. The repair and grinding device for a fan blade according to claim 1, characterized in that: There is a gap between the protective cover (3) and the polishing block (10). The cross-section of the polishing block (10) is designed in a "C" shape, and the curvature of the polishing block (10) is adapted to that of the grinding disc (6).

3. The repair and grinding device for a fan blade according to claim 2, wherein: The inner walls of the mounting hole positions (7) and the docking hole positions (9) are designed to be smooth, and the orifices of the mounting hole positions (7) and the docking hole positions (9) are designed to be arc-shaped. A rubber strip is provided between the replaceable grinding connection clip (8) and the grinding disc (6). The outer surface of the replaceable grinding connection clip (8) is a grinding surface.

4. The repairing and grinding device for a fan blade according to claim 3, characterized in that: The outer edge of the replaceable grinding connection clip (8) is designed in a "C" shape. The semi-solid polishing agent (12) is pressed on the outer edge of the replaceable grinding connection clip (8), and the cross-section of the semi-solid polishing agent (12) is designed in a "C" shape.

5. The repair and grinding device for a fan blade according to claim 4, characterized in that: The polishing block (10) is adhesively connected to the replaceable grinding connection clip (8), and the polishing block (10) completely covers the replaceable grinding connection clip (8). The outer edge of the polishing block (10) is designed in a "C" shape.

6. The a repair and grinding device for a fan blade according to claim 5, characterized in that: The semi-solid polishing agent (12) is any one of stainless steel cleaning paste and stainless steel cleaning wax.

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