Blade tip machining and polishing device based on wind power blade extension

Abstract

The utility model provides a blade tip machining and polishing device based on wind power blade extension, and relates to the technical field of wind power blade machining. A tray is fixed on the bottom frame, the bottom surface of the tray is an inclined surface, and two groups of flow guide pipes are arranged on the tray; a workpiece is polished through the polishing belt, polishing liquid drops onto the polishing belt through the dropping pipette, the polishing quality is improved, redundant polishing liquid drops into the tray, the bottom face of the tray is arranged to be an inclined face, the polishing liquid flows out through the two flow guide pipes, recycling of the polishing liquid is achieved, and environmental pollution is prevented; a workpiece is clamped through a first locking cylinder and a second locking cylinder, the workpiece does not need to be held by hands manually, the workpiece can be rotated by operating a fifth motor, the front-back position and the left-right position of the workpiece can be adjusted by operating a third motor and a fourth motor, and a cam is rotated by operating the first motor; and the height of the polishing belt can be finely adjusted, and multi-angle polishing of workpieces is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blade processing, in particular to a blade tip processing and polishing device based on the extension of a wind turbine blade. Background Art

[0002] For existing wind turbines, increasing turbine power generation and reducing maintenance costs are the main ways to improve their economic efficiency. Under the same wind conditions, increasing the power generation of blade units is an effective way to increase wind energy capture. From an aerodynamic perspective, increasing blade power output can be achieved by optimizing the aerodynamic efficiency of existing blades (such as flaps and blade blades) and extending the length of existing blades. The former is affected by the combined influence of incoming wind conditions and the blade's aerodynamic shape, requiring accurate understanding of the three-dimensional flow characteristics of the blade's aerodynamic flow field. Since the rotor's power output is proportional to the square of its diameter, increasing blade length is the most direct way to increase wind turbine power. Research has shown that when average wind speeds are low, appropriately increasing blade length can significantly increase annual power generation and reduce the cost per kilowatt-hour while ensuring safe operation of the unit under load. Blade lengthening methods include tip lengthening and root lengthening. Lengthening from the tip of the blade offers minimal weight gain, low installation / maintenance costs, and high reliability, making it a promising power-increasing measure. However, polishing is required during blade tip extension, and existing devices have the following drawbacks:

[0003] First, the existing polishing equipment lacks a polishing liquid recovery structure during polishing, which easily causes environmental pollution;

[0004] Second, the existing polishing equipment needs to hold the workpiece for polishing, which consumes manpower and is not convenient for polishing the workpiece at multiple angles. Utility Model Content

[0005] In view of this, the utility model provides a blade tip processing and polishing device based on the extension of wind turbine blades, which solves the problems that the existing devices lack a polishing liquid recovery structure, easily cause environmental pollution and waste manpower, and are inconvenient for multi-angle polishing of workpieces.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: The purpose and efficacy of the blade tip processing and polishing device based on the extension of wind turbine blades in the present invention are achieved by the following specific technical means:

[0007] The utility model provides a blade tip processing and polishing device based on the extension of wind turbine blades, specifically comprising: a base frame; four groups of moving wheels are installed at the lower end of the base frame, a tray is fixed on the base frame, a No. 1 mounting platform and a No. 2 mounting platform are fixed on the tray, the bottom surface of the tray is set as an inclined surface, and two groups of guide pipes are provided on the tray, a polishing component is installed on the No. 1 mounting platform by bolts, and the polishing component includes a bottom plate, a lifting plate and a top plate, the bottom plate is installed on the No. 1 mounting platform by bolts, a No. 1 side plate and a No. 2 side plate are installed on the bottom plate by bolts, slide rails are installed on the No. 1 side plate and the No. 2 side plate, the lifting plate slides on the slide rails on the No. 1 side plate and the No. 2 side plate, a No. 1 support seat is installed on the lifting plate by bolts, and the top plate is installed on the upper end of the top plate by bolts.

[0008] Preferably, a rotating rod is installed between the No. 1 side plate and the No. 2 side plate through a bearing, the rotating rod is installed with a cam, and a transmission box is installed on the No. 1 side plate through bolts, a pulley is installed on the rotating rod, and the No. 1 motor is installed on the transmission box through bolts, a pulley is installed on the output shaft of the No. 1 motor, and a belt is connected between the two sets of pulleys. A base is installed at the lower end of the lifting plate, and a contact roller is installed between the lifting plate and the base, and the contact roller contacts the cam. Two sets of vertical rods are fixed on the bottom plate, and the lifting plate slides on the two sets of vertical rods.

[0009] Preferably, a No. 2 support seat is mounted on the lower end of the top plate via bolts, a No. 2 motor is mounted on the lower end of the No. 2 support seat via bolts, and a pulley is mounted on the output shaft of the No. 2 motor.

[0010] Preferably, a connecting seat is fixed on the top plate, the upper end of the output shaft of the No. 2 motor is installed on the connecting seat through a bearing, and a right-angle seat is installed on the top plate through bolts, and a No. 1 hydraulic rod is installed on the right-angle seat through bolts, and a fork-shaped seat is fixed on the piston rod of the No. 1 hydraulic rod, and a top roller is installed on the fork-shaped seat through a bearing.

[0011] Preferably, two sets of support plates are installed on the top plate by bolts, and pulleys are installed on both sets of support plates. Polishing belts are connected between the two sets of pulleys and the pulley on the output shaft of the second motor, and the top roller is placed on the polishing belt.

[0012] Preferably, a supporting plate is installed on the top plate by bolts, a vertical plate is installed on the supporting plate by bolts, a slide groove is provided on the upper end of the vertical plate, a sliding seat slides in the slide groove, a tensioning roller is installed on the sliding seat, the tensioning roller is in contact with the polishing belt, and a No. 2 hydraulic rod is installed on the vertical plate by bolts, a connecting rod is fixed on the piston rod of the No. 2 hydraulic rod, and the upper end of the connecting rod is connected to the sliding seat.

[0013] Preferably, a fixing block is installed on the second side plate by bolts, a dripping tube is installed on the fixing block, and the dripping tube is connected to an external polishing liquid supply device.

[0014] Preferably, the No. 1 seat is mounted on the No. 2 mounting platform by bolts, the No. 1 plate is mounted on the No. 1 seat by bolts, the No. 3 motor is mounted on the No. 1 plate by bolts, the No. 1 screw rod is mounted on the No. 1 seat by a bearing, a belt is connected between the output shaft of the No. 3 motor and the No. 1 screw rod, the No. 1 cover plate is mounted on the No. 1 seat by bolts, the No. 1 movable seat is slidably mounted on the No. 1 seat, and the No. 1 movable seat is threadedly engaged with the No. 1 screw rod.

[0015] Preferably, the No. 2 seat is installed on the No. 1 movable seat, the No. 2 screw rod is installed on the No. 2 seat through a bearing, and the No. 2 plate is installed on the No. 2 seat through bolts, the No. 4 motor is installed on the No. 2 plate through bolts, the output shaft of the No. 4 motor is connected to the No. 2 screw rod through a belt, the No. 2 cover plate is installed on the No. 2 plate through bolts, the No. 2 movable seat is slid on the No. 2 seat, and the No. 2 movable seat is threadedly matched with the No. 2 screw rod.

[0016] Preferably, a rail seat is fixed to the upper end of the No. 2 movable seat, and a No. 1 cylinder and a No. 2 cylinder are slid on the rail seat, and a No. 1 locking cylinder and a No. 2 locking cylinder are respectively installed in the No. 1 cylinder and the No. 2 cylinder through bearings, and a No. 1 welding plate and a No. 2 welding plate are respectively fixed on the No. 1 cylinder and the No. 2 cylinder, and a No. 5 electric motor is installed on the No. 2 welding plate through bolts, and the output shaft of the No. 5 electric motor is connected to the No. 2 locking cylinder through a belt, and a No. 3 hydraulic rod and a No. 4 hydraulic rod are installed on the rail seat, and the piston rods of the No. 3 hydraulic rod and the No. 4 hydraulic rod are respectively connected to the No. 1 welding plate and the No. 2 welding plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. A tray is fixed on the base frame of the present application, the bottom surface of the tray is set as an inclined surface, and two sets of guide pipes are provided on the tray. When polishing, the polishing belt is operated by running the No. 2 motor to rotate, and the workpiece is polished by the polishing belt. A dripping tube is installed on the fixed block, and the dripping tube is connected to the external polishing liquid supply equipment. The polishing liquid is dripped onto the polishing belt through the dripping tube to improve the polishing quality, and the excess polishing liquid will drip into the tray. The bottom surface of the tray is set as an inclined surface, and the polishing liquid will flow out through the two sets of guide pipes, thereby realizing the recycling of the polishing liquid and preventing environmental pollution.

[0019] 2. This application uses the No. 1 locking cylinder and the No. 2 locking cylinder to clamp the workpiece, and there is no need to manually hold the workpiece. Running the No. 5 motor can rotate the workpiece, and running the No. 3 motor and the No. 4 motor can adjust the front and back position and left and right position of the workpiece. Running the No. 1 motor to rotate the cam can fine-tune the height of the polishing belt, which is convenient for multi-angle polishing of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0021] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached figure:

[0023] Figure 1 It is a schematic diagram of the overall structure of the blade tip processing and polishing device based on the extension of the wind turbine blade of the present invention.

[0024] Figure 2 It is a structural schematic diagram of a tray of a blade tip processing and polishing device based on an extension of a wind turbine blade according to the present invention.

[0025] Figure 3 It is a structural schematic diagram of the No. 1 seat of the blade tip processing and polishing device based on the extension of the wind turbine blade of the utility model.

[0026] Figure 4 It is a structural schematic diagram of a rail seat of a blade tip processing and polishing device based on an extension of a wind turbine blade according to the present invention.

[0027] Figure 5 It is a structural schematic diagram of the polishing components of the blade tip processing and polishing device based on the extension of the wind turbine blade of the present invention.

[0028] Figure 6 The utility model is a blade tip processing and polishing device based on the extension of wind turbine blades. Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Figure 7 It is a structural schematic diagram of the top plate of the blade tip processing and polishing device based on the extension of the wind turbine blade of the utility model.

[0030] Figure 8 The utility model is a blade tip processing and polishing device based on the extension of wind turbine blades. Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0031] Reference Signs List

[0032] 1. Base frame; 11. Tray; 12. Mounting platform No. 1; 13. Mounting platform No. 2; 14. Flow guide pipe;

[0033] 2. Seat No. 1; 21. Plate No. 1; 211. Screw No. 1; 212. Cover No. 1; 213. Motor No. 3; 22. Movable Seat No. 1; 23. Seat No. 2; 231. Screw No. 2; 232. Cover No. 2; 233. Plate No. 2; 234. Motor No. 4; 24. Movable Seat No. 2; 25. Rail Seat; 251. Cylinder No. 1; 2511. Welding Plate No. 1; 2512. Hydraulic Rod No. 3; 2513. Locking Cylinder No. 1; 252. Cylinder No. 2; 2521. Welding Plate No. 2; 2522. Hydraulic Rod No. 4; 2523. Locking Cylinder No. 2; 2524. Motor No. 5;

[0034] 3. Polishing parts; 31. Bottom plate; 311. Side plate No. 1; 312. Side plate No. 2; 3121. Fixed block; 3122. Drip tube; 313. Transmission box; 314. Motor No. 1; 315. Rotating rod; 3151. Cam; 316. Vertical rod; 32. Lifting plate; 321. Base; 322. Contact roller; 323. Support seat No. 1; 33. Top plate; 331. Support seat No. 2; 332. Motor No. 2; 333. Connecting seat; 334. Right-angle seat; 3341. Hydraulic rod No. 1; 3342. Fork seat; 3343. Top roller; 335. Support plate; 3351. Polishing belt; 336. Support plate; 3361. Vertical plate; 3362. Hydraulic rod No. 2; 3363. Sliding seat; 3364. Connecting rod; 3365. Tensioning roller. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. The following describes various embodiments of the present invention in detail with reference to the accompanying drawings.

[0036] Example 1:

[0037] Please refer to Figures 1 to 8 :

[0038] The utility model proposes a blade tip processing and polishing device based on the extension of a wind turbine blade, comprising: a base frame 1; four groups of moving wheels are installed at the lower end of the base frame 1, a tray 11 is fixed on the base frame 1, a No. 1 mounting platform 12 and a No. 2 mounting platform 13 are fixed on the tray 11, the bottom surface of the tray 11 is set as an inclined surface, and two groups of guide pipes 14 are provided on the tray 11, a polishing component 3 is installed on the No. 1 mounting platform 12 by bolts, and the polishing component 3 comprises a bottom plate 31, a lifting plate 32 and a top plate 33, the bottom plate 31 is installed on the No. 1 mounting platform 12 by bolts, a No. 1 side plate 311 and a No. 2 side plate 312 are installed on the bottom plate 31 by bolts, and slide rails are installed on the No. 1 side plate 311 and the No. 2 side plate 312, the lifting plate 32 slides on the slide rails on the No. 1 side plate 311 and the No. 2 side plate 312, a No. 1 support seat 323 is installed on the lifting plate 32 by bolts, and the top plate 33 is installed on the upper end of the top plate 33 by bolts.

[0039] Furthermore, a rotating rod 315 is installed between the No. 1 side plate 311 and the No. 2 side plate 312 through a bearing, and a cam 3151 is installed on the rotating rod 315. A transmission box 313 is installed on the No. 1 side plate 311 through bolts, and a pulley is installed on the rotating rod 315. A No. 1 motor 314 is installed on the transmission box 313 through bolts, and a pulley is installed on the output shaft of the No. 1 motor 314. A belt is connected between the two sets of pulleys. A base 321 is installed at the lower end of the lifting plate 32, and a contact roller 322 is installed between the lifting plate 32 and the base 321. The contact roller 322 contacts the cam 3151. Two sets of vertical rods 316 are fixed on the bottom plate 31. The lifting plate 32 slides on the two sets of vertical rods 316. The lower end of the top plate 33 is fixed with a No. 2 support seat 331 by bolts. The lower end of the No. 2 support seat 331 is fixed with a No. 2 motor 332 by bolts. A pulley is installed on the output shaft of the No. 2 motor 332. A connecting seat 333 is fixed on the top plate 33. The upper end of the output shaft of the No. 2 motor 332 is installed on the connecting seat 333 through a bearing. A right-angle seat 334 is fixed on the top plate 33 by bolts. A No. 1 hydraulic rod 3341 is installed on the right-angle seat 334 by bolts. A fork seat 3342 is fixed to the piston rod of the No. 1 hydraulic rod 3341. A top roller 334 is installed on the fork seat 3342 through a bearing. 3. Two sets of support plates 335 are installed on the top plate 33 by bolts. Pulleys are installed on both sets of support plates 335. Polishing belts 3351 are connected between the two sets of pulleys and the pulley on the output shaft of the second motor 332. The top roller 3343 is supported on the polishing belt 3351. A supporting plate 336 is installed on the top plate 33 by bolts. A vertical plate 3361 is installed on the supporting plate 336 by bolts. A slide groove is provided on the upper end of the vertical plate 3361. A sliding seat 3363 slides in the slide groove. A tensioning roller 3365 is installed on the sliding seat 3363. The tensioning roller 3365 contacts the polishing belt 3351. A second hydraulic rod 3362 is installed on the vertical plate 3361 by bolts. A connecting rod 3364 is fixed on the piston rod of the No. 2 hydraulic rod 3362, and the upper end of the connecting rod 3364 is connected to the sliding seat 3363. When in use, the polishing belt 3351 is operated by running the No. 2 motor 332, and the workpiece is polished by the polishing belt 3351. The No. 1 hydraulic rod 3341 is extended to make the top roller 3343 press against the polishing belt 3351, which can improve the extrusion capacity of the polishing belt 3351. The No. 2 hydraulic rod 3362 is contracted to make the tensioning roller 3365 press against the polishing belt 3351, thereby realizing the tensioning of the polishing belt 3351. The No. 1 motor 314 is operated to rotate the cam 3151, and the height of the polishing belt 3351 can be fine-tuned.

[0040] Furthermore, a fixed block 3121 is installed on the second side panel 312 by bolts, and a dripping tube 3122 is installed on the fixed block 3121. The dripping tube 3122 is connected to the external polishing liquid supply equipment. The polishing liquid is dripped onto the polishing belt 3351 through the dripping tube 3122 to improve the polishing quality, and excess polishing liquid will drip into the tray 11. The bottom surface of the tray 11 is set as an inclined surface, and the polishing liquid will flow out through two sets of guide pipes 14 to realize the recycling of the polishing liquid and prevent environmental pollution.

[0041] Example 2:

[0042] On the basis of embodiment 1, a No. 1 seat 2 is mounted on the No. 2 mounting platform 13 by bolts, a No. 1 plate 21 is mounted on the No. 1 seat 2 by bolts, a No. 3 motor 213 is mounted on the No. 1 plate 21 by bolts, a No. 1 screw rod 211 is mounted on the No. 1 seat 2 by a bearing, a belt is connected between the output shaft of the No. 3 motor 213 and the No. 1 screw rod 211, a No. 1 cover plate 212 is mounted on the No. 1 seat 2 by bolts, a No. 1 movable seat 22 is slidably mounted on the No. 1 seat 2, the No. 1 movable seat 22 is threadedly matched with the No. 1 screw rod 211, a No. 2 seat 23 is mounted on the No. 1 movable seat 22, and a No. 2 screw rod 231 is mounted on the No. 2 seat 23 by a bearing. , and a No. 2 plate 233 is installed on the No. 2 seat 23 by bolts, a No. 4 motor 234 is installed on the No. 2 plate 233 by bolts, the output shaft of the No. 4 motor 234 is connected to the No. 2 screw rod 231 by a belt, and a No. 2 cover plate 232 is installed on the No. 2 plate 233 by bolts. A No. 2 movable seat 24 is slidably provided on the No. 2 seat 23, and the No. 2 movable seat 24 is threadedly matched with the No. 2 screw rod 231. When the No. 3 motor 213 is operated to rotate the No. 1 screw rod 211, the front and rear position of the No. 1 movable seat 22 can be adjusted. When the No. 4 motor 234 is operated to rotate the No. 2 screw rod 231, the left and right position of the No. 2 movable seat 24 can be adjusted.

[0043] Example 3,

[0044] On the basis of the first and second embodiments, a rail seat 25 is fixed on the upper end of the second movable seat 24, and a number one cylinder 251 and a number two cylinder 252 are slid on the rail seat 25. A number one locking cylinder 2513 and a number two locking cylinder 2523 are respectively installed in the number one cylinder 251 and the number two cylinder 252 through bearings. A number one welding plate 2511 and a number two welding plate 2521 are respectively fixed on the number one cylinder 251 and the number two cylinder 252. A number five motor 2524 is installed on the number two welding plate 2521 by bolts. The output shaft of the number five motor 2524 is connected to the number two locking cylinder 2513 through a belt. 523 connection, a No. 3 hydraulic rod 2512 and a No. 4 hydraulic rod 2522 are installed on the rail seat 25, and the piston rods of the No. 3 hydraulic rod 2512 and the No. 4 hydraulic rod 2522 are respectively connected to the No. 1 welding plate 2511 and the No. 2 welding plate 2521. The No. 3 hydraulic rod 2512 and the No. 4 hydraulic rod 2522 are telescopic to adjust the distance between the No. 1 locking cylinder 2513 and the No. 2 locking cylinder 2523. The workpiece is clamped by the No. 1 locking cylinder 2513 and the No. 2 locking cylinder 2523 without the need for manual holding of the workpiece. The workpiece can be rotated by running the No. 5 motor 2524.

[0045] In this utility model, unless otherwise expressly specified or limited, the terms "install," "connect," "connect," "fix," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. There are many ways to detachably install, such as plug-in and snap-fit ​​connection, or bolt connection.

[0046] The above clearly and completely describes the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present invention.

[0047] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without inventive effort are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in this article do not refer solely to direct connection of components, but rather to the fact that more optimal connection structures can be formed by adding or removing auxiliary connection components according to specific implementation conditions.

[0048] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. A blade tip processing and polishing device based on wind turbine blade extension, characterized in that: include: A chassis (1); four sets of moving wheels are installed at the lower end of the chassis (1); a tray (11) is fixed on the chassis (1); a first mounting platform (12) and a second mounting platform (13) are fixed on the tray (11); the bottom surface of the tray (11) is set as an inclined surface, and two sets of guide pipes (14) are provided on the tray (11); a polishing component (3) is installed on the first mounting platform (12) by bolts, and the polishing component (3) includes a bottom plate (31), a lifting plate (32) and a top plate (33); the bottom plate (31) is mounted on the No. 1 mounting platform (12) by bolts, the No. 1 side plate (311) and the No. 2 side plate (312) are mounted on the bottom plate (31) by bolts, the No. 1 side plate (311) and the No. 2 side plate (312) are both mounted with slide rails, the lifting plate (32) slides on the slide rails on the No. 1 side plate (311) and the No. 2 side plate (312), the No. 1 support seat (323) is mounted on the lifting plate (32) by bolts, and the top plate (33) is mounted on the upper end of the top plate (33) by bolts.

2. The blade tip processing and polishing device based on wind turbine blade extension according to claim 1, characterized in that: A rotating rod (315) is installed between the first side plate (311) and the second side plate (312) via a bearing, and a cam (3151) is installed on the rotating rod (315). A transmission box (313) is installed on the first side plate (311) via a bolt, and a pulley is installed on the rotating rod (315). A first motor (314) is installed on the transmission box (313) via a bolt, and a pulley is installed on the output shaft of the first motor (314). A belt is connected between the two groups of pulleys. A base (321) is installed at the lower end of the lifting plate (32), and a contact roller (322) is installed between the lifting plate (32) and the base (321). The contact roller (322) contacts the cam (3151). Two groups of vertical rods (316) are fixed on the bottom plate (31), and the lifting plate (32) slides on the two groups of vertical rods (316).

3. The blade tip processing and polishing device based on wind turbine blade extension according to claim 1 is characterized in that: The lower end of the top plate (33) is mounted with a No. 2 support seat (331) via bolts, the lower end of the No. 2 support seat (331) is mounted with a No. 2 motor (332) via bolts, and a pulley is mounted on the output shaft of the No. 2 motor (332).

4. The blade tip processing and polishing device based on wind turbine blade extension according to claim 2, characterized in that: A connecting seat (333) is fixed on the top plate (33), the upper end of the output shaft of the second motor (332) is mounted on the connecting seat (333) via a bearing, and a right-angle seat (334) is mounted on the top plate (33) via bolts, a first hydraulic rod (3341) is mounted on the right-angle seat (334) via bolts, a fork-shaped seat (3342) is fixed on the piston rod of the first hydraulic rod (3341), and a top roller (3343) is mounted on the fork-shaped seat (3342) via a bearing.

5. The blade tip processing and polishing device based on wind turbine blade extension according to claim 4 is characterized in that: Two groups of support plates (335) are installed on the top plate (33) by bolts. Pulleys are installed on the two groups of support plates (335). A polishing belt (3351) is connected between the two groups of pulleys and the pulley on the output shaft of the second motor (332). The top roller (3343) is placed on the polishing belt (3351).

6. The blade tip processing and polishing device based on wind turbine blade extension according to claim 5, characterized in that: A supporting plate (336) is mounted on the top plate (33) by bolts, a vertical plate (3361) is mounted on the supporting plate (336) by bolts, a slide groove is provided at the upper end of the vertical plate (3361), a sliding seat (3363) slides in the slide groove, a tensioning roller (3365) is mounted on the sliding seat (3363), the tensioning roller (3365) is in contact with the polishing belt (3351), and a No. 2 hydraulic rod (3362) is mounted on the vertical plate (3361) by bolts, a connecting rod (3364) is fixed on the piston rod of the No. 2 hydraulic rod (3362), and the upper end of the connecting rod (3364) is connected to the sliding seat (3363).

7. The blade tip processing and polishing device based on wind turbine blade extension according to claim 2, characterized in that: A fixing block (3121) is mounted on the second side plate (312) via bolts, a dripping tube (3122) is mounted on the fixing block (3121), and the dripping tube (3122) is connected to an external polishing liquid supply device.

8. The blade tip processing and polishing device based on wind turbine blade extension according to claim 1 is characterized in that: A No. 1 seat (2) is mounted on the No. 2 mounting platform (13) via bolts, a No. 1 plate (21) is mounted on the No. 1 seat (2) via bolts, a No. 3 motor (213) is mounted on the No. 1 plate (21) via bolts, a No. 1 screw rod (211) is mounted on the No. 1 seat (2) via a bearing, a belt is connected between the output shaft of the No. 3 motor (213) and the No. 1 screw rod (211), a No. 1 cover plate (212) is mounted on the No. 1 seat (2) via bolts, a No. 1 movable seat (22) is slidably mounted on the No. 1 seat (2), and the No. 1 movable seat (22) is threadedly engaged with the No. 1 screw rod (211).

9. The blade tip processing and polishing device based on wind turbine blade extension according to claim 8, characterized in that: The No. 2 seat (23) is mounted on the No. 1 movable seat (22), a No. 2 screw rod (231) is mounted on the No. 2 seat (23) via a bearing, a No. 2 plate (233) is mounted on the No. 2 seat (23) via bolts, a No. 4 motor (234) is mounted on the No. 2 plate (233) via bolts, an output shaft of the No. 4 motor (234) is connected to the No. 2 screw rod (231) via a belt, a No. 2 cover plate (232) is mounted on the No. 2 plate (233) via bolts, a No. 2 movable seat (24) is slidably mounted on the No. 2 seat (23), and the No. 2 movable seat (24) is threadedly engaged with the No. 2 screw rod (231).

10. The blade tip processing and polishing device based on wind turbine blade extension according to claim 9, characterized in that: The upper end of the No. 2 movable seat (24) is fixed with a rail seat (25), and a No. 1 cylinder (251) and a No. 2 cylinder (252) are slidably mounted on the rail seat (25), and a No. 1 locking cylinder (2513) and a No. 2 locking cylinder (2523) are respectively installed in the No. 1 cylinder (251) and the No. 2 cylinder (252) through bearings, and a No. 1 welding plate (2511) and a No. 2 welding plate (2521) are respectively fixed on the No. 1 cylinder (251) and the No. 2 cylinder (252). A fifth motor (2524) is mounted on the welding plate (2521) via bolts, and an output shaft of the fifth motor (2524) is connected to a second locking cylinder (2523) via a belt. A third hydraulic rod (2512) and a fourth hydraulic rod (2522) are mounted on the rail seat (25), and piston rods of the third hydraulic rod (2512) and the fourth hydraulic rod (2522) are connected to the first welding plate (2511) and the second welding plate (2521), respectively.

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