Equipment for grinding inclined surface of wedge-shaped strip at blade root of wind power generation blade

By designing an automated grinding equipment for the wedge-shaped bar bevel of wind turbine blade roots, the problems of uneven grinding, dust pollution, and poor safety have been solved, achieving efficient and safe wedge-shaped bar grinding to meet the needs of large-scale production.

CN224196535UActive Publication Date: 2026-05-05NANJING HITECH COMPOSITES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING HITECH COMPOSITES CO LTD
Filing Date
2025-06-03
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

In existing technologies, the grinding of the wedge-shaped strips at the root of wind turbine blades suffers from problems such as uneven grinding, dust pollution, poor safety, and low production efficiency.

Method used

An automated grinding device was designed, comprising a frame, a propulsion track, a propulsion motor, a grinding motor, and a dust collection device. The wedge-shaped strip is fixed by a mounting bracket and a slot, the propulsion motor ensures the consistency of grinding force and angle, and dust is collected by a dust collection hood and a dust collection pipe. The device is controlled by a control cabinet.

Benefits of technology

It achieves uniform surface finish in wedge-shaped grinding, improves product quality and safety, reduces dust hazards, increases production efficiency, and meets the needs of large-scale production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a grinding device for a wedge-shaped strip inclined plane of a blade root of a wind power generation blade, which comprises a rack, a propelling track arranged on the inner side of the rack, a propelling gear in meshed connection with the propelling track, a propelling motor connected to the bottom of the propelling gear, a mounting frame arranged on the outer side of the propelling motor, and an assembling plate arranged on the top of the mounting frame. The assembling plate is slidably arranged on the rack, a clamping base is installed on one side of the top of the assembling plate, a clamping groove is formed in the clamping base, a fixing block is installed on the other side of the top of the assembling plate, pressing tools are installed on the outer side of the clamping base and the outer side of the fixing block, a dust cover is installed on the top of the rack, openings are formed in the left side and the right side of the dust cover, and a grinding motor is installed on the inner side of the dust cover. The power output end of the polishing motor is connected with a rotating rod, the bottom of the rotating rod is connected with a polishing head, the outer side of the polishing head is sleeved with a dust suction cover, the back of the dust suction cover is fixedly installed in a dust cover, the dust suction cover is connected with a dust suction pipe, and the dust suction pipe penetrates to the outer side of the dust cover and is externally connected with dust suction equipment.
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Description

Technical Field

[0001] This utility model belongs to the technical field of grinding equipment, specifically relating to a grinding equipment for the beveled surface of the wedge-shaped strip at the root of wind turbine blades. Background Technology

[0002] In the wind power industry, the bevel grinding of the wedge-shaped strips at the root of wind turbine blades is a crucial processing step. Currently, the industry mainly uses handheld grinding equipment such as angle grinders or sandbag machines for this purpose. However, this handheld grinding method has many drawbacks: Firstly, due to manual operation, it is difficult to ensure the consistency of grinding force and angle, resulting in uneven grinding surfaces and seriously affecting product quality and subsequent assembly and use. Secondly, the grinding process generates a large amount of dust, which not only threatens the health of operators but also pollutes the working environment. Furthermore, the operation of handheld grinding equipment is difficult to control, relies excessively on the operator's skill level, has poor safety, and is prone to accidents. At the same time, product quality is unstable, production efficiency is low, and it is difficult to meet the growing demand for wind turbine blade production. Therefore, there is an urgent need for a bevel grinding device for the wedge-shaped strips at the root of wind turbine blades to solve the above problems. Utility Model Content

[0003] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide a grinding device for the beveled surface of the wedge-shaped strip at the root of wind turbine blades.

[0004] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0005] A grinding device for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade includes a frame. A propulsion rail is installed inside the frame, and a propulsion gear is meshed with the propulsion rail. A propulsion motor is connected to the bottom of the propulsion gear. A mounting frame is installed outside the propulsion motor, and an assembly plate is installed on the top of the mounting frame. The assembly plate is slidably mounted on the frame. A retainer is installed on one side of the top of the assembly plate, and a retainer groove is provided inside the retainer. A fixing block is installed on the other side of the top of the assembly plate. Clamping fixtures are installed on the outer sides of both the retainer and the fixing block. A dust cover is installed on the top of the frame, and openings are provided on both the left and right sides of the dust cover. A grinding motor is installed inside the dust cover. A rotating rod is connected to the power output end of the grinding motor, and a grinding head is connected to the bottom of the rotating rod. A dust suction hood is fitted around the outside of the grinding head, and the back of the dust suction hood is fixedly installed inside the dust cover. A dust suction pipe is connected to the dust suction hood, extending through to the outside of the dust cover and connected to a dust collection device.

[0006] The clamping fixture includes a bracket, a threaded hole on one side of the top of the bracket, a screw installed in the threaded hole, a pressing block installed at the bottom of the screw, and a torsion block installed at the top of the screw.

[0007] Furthermore, the assembly plate has guide holes on both sides, and guide rods are slidably connected within these guide holes. The guide rods are mounted on both sides within the frame. This structural design facilitates the guiding and sliding of the assembly plate, resulting in smoother movement.

[0008] Furthermore, the clamping fixture also includes a clamping cylinder mounted on one side of the top of the support, and the power output end of the clamping cylinder is connected to a clamping block. This structural design can be selected and used according to actual conditions.

[0009] Furthermore, a control cabinet is mounted on the outside of the frame, and the control cabinet is connected to the propulsion motor, grinding motor, and dust collection equipment. This structural design allows for control of the start and stop of the propulsion motor, grinding motor, and dust collection equipment, facilitating operation and use.

[0010] Furthermore, a dust collection pipe is connected to one side of the top of the dust hood, and the other side of the dust collection pipe penetrates the dust hood and is connected to a vacuuming device. This structural design allows for the collection of residual dust inside the dust hood.

[0011] The beneficial effects of this utility model are as follows: This utility model ensures that the wedge-shaped strip's inclined path is parallel to the grinding head through the card seat, card slot, and fixing block, and that the propulsion motor advances at a uniform speed, guaranteeing consistent grinding force and angle, resulting in a uniform grinding surface and effectively improving product quality. It also ensures consistent process parameters for each grinding operation, guaranteeing product quality stability and reducing fluctuations. During grinding, dust is collected promptly through the dust hood and dust suction pipe, reducing dust content in the working environment and mitigating the health hazards to operators, while also meeting environmental protection requirements. During equipment operation, the wedge-shaped strip is firmly fixed by the clamping fixture, eliminating the need for direct contact with the grinding area by the operator, effectively preventing safety accidents caused by improper operation of handheld grinding equipment, and improving equipment safety. It enables continuous and automatic grinding operations, significantly shortening the grinding time for a single wedge-shaped strip compared to handheld grinding equipment, improving production efficiency, and meeting the needs of large-scale production. Attached Figure Description

[0012] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0013] Figure 1 This is a schematic diagram of the axial side structure of a grinding device for the beveled surface of a wedge-shaped strip at the root of a wind turbine blade, according to an embodiment of the present invention.

[0014] Figure 2This is a schematic diagram of the transverse cross-sectional structure of a grinding device for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade, according to an embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the vertical cross-sectional structure of a grinding device for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade, according to an embodiment of the present invention.

[0016] Figure 4 This is a schematic diagram of the clamping cylinder structure of a grinding equipment for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade, according to an embodiment of the present invention.

[0017] The symbols for the main components are explained below:

[0018] 1. Frame; 2. Propulsion rail; 3. Propulsion gear; 4. Propulsion motor; 5. Mounting bracket; 6. Assembly plate; 7. Card slot; 8. Fixing block; 9. Clamping fixture; 10. Dust cover; 11. Opening; 12. Grinding motor; 13. Rotating rod; 14. Grinding head; 15. Dust suction hood; 16. Dust suction pipe; 17. Bracket; 18. Screw; 19. Pressing block; 20. Torsion block; 21. Guide rod; 22. Clamping cylinder; 23. Clamping block; 24. Control cabinet; 25. Dust collection pipe; 26. Detailed Implementation

[0019] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Example 1, such as Figure 1 , Figure 2 and Figure 3 As shown, a grinding device for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade includes a frame 1 with a propulsion rail 2 installed on the inner side. A propulsion gear 3 is meshed with the propulsion rail 2. A propulsion motor 4 is connected to the bottom of the propulsion gear 3. A mounting bracket 5 is installed on the outer side of the propulsion motor 4. An assembly plate 6 is mounted on the top of the mounting bracket 5 and slidably mounted on the frame 1. A retaining seat 7 is installed on one side of the top of the assembly plate 6, and a retaining groove 8 is provided inside the retaining seat 7. A fixing block 9 is installed on the other side of the top of the assembly plate 6. The outer sides of both the retaining seat 7 and the fixing block 9 are equipped with... The machine is equipped with a clamping fixture 10. A dust cover 11 is installed on the top of the frame 1. The dust cover 11 has openings 12 on the left and right sides. A grinding motor 13 is installed inside the dust cover 11. A rotating rod 14 is connected to the power output end of the grinding motor 13. A grinding head 15 is connected to the bottom of the rotating rod 14. A dust suction cover 16 is fitted on the outside of the grinding head 15. The back of the dust suction cover 16 is fixedly installed inside the dust cover 11. A dust suction pipe 17 is connected to the dust suction cover 16. The dust suction pipe 17 passes through to the outside of the dust cover 11 and is connected to a dust suction device.

[0021] The clamping fixture 10 includes a bracket 18. A threaded hole is provided on one side of the top of the bracket 18. A screw 19 is installed in the threaded hole. A pressing block 20 is installed at the bottom of the screw 19. A torsion block 21 is installed at the top of the screw 19.

[0022] In this embodiment, one side of the wedge strip to be ground is placed in the slot 8 of the card holder 7, and the other side of the wedge strip is located on the fixing block 9, ensuring that the inclined travel trajectory of the wedge strip is parallel to the grinding head 15. Then, the clamping fixture 10 is operated. By rotating the torsion block 21, the torsion block 21 drives the screw 19 to rotate along the threaded hole and push the pressing block 20 downward along the threaded hole until the pressing block 20 presses on the wedge strip and fixes the wedge strip in the slot 8. Then, the propulsion motor 4 is started, causing the propulsion gear 3 to rotate. The propulsion gear 3 generates movement force along the propulsion track 2, thereby driving the mounting plate 6 to move at a constant speed along the propulsion track 2 through the mounting bracket 5. The plate then enters through the opening 12 on one side of the dust cover 11 for grinding. At the same time, the grinding motor 13 and the dust collection equipment are started. The grinding motor 13 drives the rotating rod 14, which in turn drives the grinding head 15 to rotate, causing the grinding head 15 to begin grinding the inclined surface of the wedge strip. The dust generated during the grinding process is sucked in by the dust collection equipment from the dust collection hood 16 and output through the dust collection pipe 17, thus enabling timely collection of the dust generated during the grinding process. After grinding, the dust is output from the opening 12 on the other side of the dust cover 11, allowing the ground wedge strip to be removed. Then, the propulsion motor 4 is controlled to drive the mounting plate 6 back to the starting position, and the grinding work for the new wedge strip can begin.

[0023] Example 2, as Figure 1 and Figure 3 As shown, this embodiment adds the following structure based on embodiment 1: guide holes are provided on both sides of the assembly plate 6, and guide rods 22 are slidably connected in the guide holes. The two sides of the guide rods 22 are installed in the frame 1.

[0024] In this embodiment, during the uniform speed of the assembly plate 6 moving along the propulsion track 2, the assembly plate 6 will further achieve the effect of guiding movement with the cooperation of the guide hole and the guide rod 22, ensuring that the assembly plate 6 slides in a guided manner and will not deviate during the movement.

[0025] Example 3, as Figure 4 As shown, this embodiment adds the following structure based on embodiment 1: the clamping fixture 10 also includes a clamping cylinder 23 installed on one side of the top of the bracket 18, and the power output end of the clamping cylinder 23 is connected to a clamping block 24.

[0026] In this embodiment, after one side of the wedge strip is placed in the slot 8 of the card holder 7 and the other side of the wedge strip is located on the fixing block 9, the tightening cylinder 23 can be activated to drive the tightening block 24 to fix the wedge strip.

[0027] Example 4, as Figure 1 As shown, this embodiment adds the following structure to the embodiment 1: a control cabinet 25 is installed on the outside of the frame 1, and the control cabinet 25 is connected to the propulsion motor 4, the grinding motor 13 and the dust collection equipment.

[0028] In this embodiment, during use, the start and stop of the propulsion motor 4, the grinding motor 13 and the dust collection equipment can be controlled by the control cabinet 25, as well as the forward and backward movement of the propulsion motor 4 to achieve the effect of control operation.

[0029] Example 5, as Figure 2 As shown, this embodiment adds the following structure to the embodiment 1: a dust collection pipe 26 is connected to one side of the top of the dust collection hood 16, and the other side of the dust collection pipe 26 passes through the dust cover 11 and is connected to a dust collection device.

[0030] In this embodiment, during use, the dust remaining after being vacuumed by the vacuum hood 16 is scattered inside the vacuum hood 16. At this time, the dust can be adsorbed by the dust collection pipe 26, which further solves the problem of easy dispersion of grinding dust.

[0031] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A grinding device for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade, characterized in that: The system includes a frame (1), a propulsion rail (2) installed on the inner side of the frame (1), a propulsion gear (3) meshing with the propulsion rail (2), a propulsion motor (4) connected to the bottom of the propulsion gear (3), a mounting bracket (5) installed on the outer side of the propulsion motor (4), an assembly plate (6) installed on the top of the mounting bracket (5), the assembly plate (6) being slidably mounted on the frame (1), a card holder (7) installed on one side of the top of the assembly plate (6), a card slot (8) provided in the card holder (7), a fixing block (9) installed on the other side of the top of the assembly plate (6), and clamping fixtures installed on the outer sides of both the card holder (7) and the fixing block (9). (10) A dust cover (11) is installed on the top of the frame (1). The dust cover (11) has openings (12) on the left and right sides. A grinding motor (13) is installed inside the dust cover (11). A rotating rod (14) is connected to the power output end of the grinding motor (13). A grinding head (15) is connected to the bottom of the rotating rod (14). A dust suction cover (16) is fitted on the outside of the grinding head (15). The back of the dust suction cover (16) is fixedly installed inside the dust cover (11). A dust suction pipe (17) is connected to the dust suction cover (16). The dust suction pipe (17) extends through to the outside of the dust cover (11) and is connected to a dust suction device. The clamping fixture (10) includes a bracket (18), a threaded hole on one side of the top of the bracket (18), a screw (19) installed in the threaded hole, a pressing block (20) installed at the bottom of the screw (19), and a torsion block (21) installed at the top of the screw (19).

2. The grinding equipment for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade according to claim 1, characterized in that: The assembly plate (6) has guide holes on both sides, and guide rods (22) are slidably connected in the guide holes. The two sides of the guide rods (22) are installed in the frame (1).

3. The grinding equipment for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade according to claim 2, characterized in that: The clamping fixture (10) also includes a clamping cylinder (23) installed on one side of the top of the bracket (18), and the power output end of the clamping cylinder (23) is connected to a clamping block (24).

4. The grinding equipment for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade according to claim 3, characterized in that: A control cabinet (25) is installed on the outside of the frame (1), and the control cabinet (25) is connected to the propulsion motor (4), the grinding motor (13) and the dust collection equipment.

5. The grinding equipment for the beveled surface of the wedge-shaped strip at the root of a wind turbine blade according to claim 4, characterized in that: The top side of the dust collection hood (16) is connected to a dust collection pipe (26), and the other side of the dust collection pipe (26) passes through the dust cover (11) and is connected to a dust collection device.