Propeller blade with root reinforcing protection structure

Abstract

The utility model discloses a propeller blade with a root reinforcing protection structure, which comprises a root component, the root component comprises a connecting piece, one end of the connecting piece is provided with a clamping piece, the other end of the connecting piece is provided with a sleeving piece, and a limiting groove is arranged in the connecting piece; one end of each fan blade is provided with a clamping groove which is matched and clamped with the root component; the fixing assembly is located at the clamping position of the fan blades and the root assembly and comprises a top plate and a bottom plate, a limiting rod is arranged in the middle of the lower end of the top plate and located in the limiting groove, a groove is formed in the upper end of the bottom plate, the lower end of the limiting rod is inserted into the groove, and positioning rods are arranged on the two sides of the lower end of the top plate. Sleeves are arranged on the two sides of the upper end of the bottom plate, and the positioning rods are inserted into the sleeves. Compared with the prior art, the utility model has the advantages that the root part is reinforced, the overall weight is light, and the toughness is high.

Description

Technical Field

[0001] The utility model relates to the field of propeller blades, in particular to a propeller blade with a root reinforcement protection structure. Background Art

[0002] Propeller blades require high strength and light weight, but the roots of existing propeller blades lack protective reinforcement structures, which makes them easily damaged. In addition, most existing technologies are integrated structures, and if the blades are damaged, the blades and roots need to be replaced together.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a propeller blade with a root reinforcement protection structure, which can strengthen and fix the root and ensure the overall lightness.

[0005] In order to solve the above problems, the technical solution of the present invention is as follows: a propeller blade with a root reinforcement protection structure, comprising a root assembly, wherein the root assembly comprises a connecting piece, one end of the connecting piece is provided with a clamping piece, the other end of the connecting piece is provided with a sleeve piece, and the interior of the connecting piece is provided with a limiting groove;

[0006] A fan blade, wherein one end of the fan blade is provided with a slot for engaging with the root assembly;

[0007] A fixing component is located at the connection between the fan blade and the root component. The fixing component includes a top plate and a bottom plate. A limiting rod is provided in the middle of the lower end of the top plate. The limiting rod is located inside the limiting groove. A groove is provided inside the upper end of the bottom plate. The lower end of the limiting rod is inserted into the groove. Positioning rods are provided on both sides of the lower end of the top plate. Sleeves are provided on both sides of the upper end of the bottom plate. The positioning rods are inserted into the sleeve.

[0008] Furthermore, through grooves are provided at both ends of the bottom plate, the through grooves are connected to the sleeve, the bottom end of the positioning rod is located inside the through groove, a bolt is provided inside the through groove, the bolt is threadedly connected to the positioning rod, and a sealing layer is provided at the lower end of the bolt.

[0009] Furthermore, the root component includes a base layer and a protective layer, and two groups of the protective layers are fixedly connected to both ends of the base layer.

[0010] Furthermore, a circular groove is provided inside the sleeve, and carbon cloth is provided inside the circular groove.

[0011] Furthermore, the cross section of the limiting groove is a square, and the cross section of the limiting rod is a square that matches the limiting groove.

[0012] Furthermore, the cross-section of the connecting piece is square, and the cross-section of the clamping piece is triangular.

[0013] The advantages of this utility model compared with the existing technology are:

[0014] (1) The utility model can facilitate the quick fixation between the root component and the fan blade by installing the fixing component;

[0015] (2) The base material of the root component of the utility model is a glass fiber board with a thickness of 2 mm, and the protective layer is made of PM I foam, which is a lightweight and high-strength foam plastic with a thickness of 3 mm, which further improves the strength of the root component and ensures the overall lightness of the propeller blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall three-dimensional diagram of a propeller blade with a root reinforcement protection structure according to the present invention.

[0017] Figure 2 The utility model is a three-dimensional diagram of a root component and a fan blade of a propeller blade with a root reinforcement protection structure.

[0018] Figure 3 This utility model is a propeller blade with a root reinforcement protection structure Figure 2 Exploded diagram.

[0019] Figure 4 It is a schematic diagram of a fixing assembly of a propeller blade with a root reinforcement protection structure according to the present invention.

[0020] Figure 5 It is an enlarged view of point A of a propeller blade with a root reinforcement protection structure according to the present invention.

[0021] As shown in the figure: 1. Root component; 2. Fan blade; 3. Fixing component; 4. Connector; 5. Snap-fit component; 6. Socket component; 7. Limiting groove; 8. Snap-fit groove; 9. Top plate; 10. Bottom plate; 11. Limiting rod; 12. Groove; 13. Positioning rod; 14. Sleeve; 15. Through groove; 16. Bolt; 17. Sealing layer; 18. Base layer; 19. Protective layer; 20. Circular groove; 21. Carbon cloth. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0023] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0025] Example 1

[0026] like Figures 1 to 5 As shown, a propeller blade with a root reinforcement protection structure includes a root component 1, the root component 1 includes a connector 4, a clamping member 5 is installed at one end of the connector 4, and a sleeve 6 is installed at the other end of the connector 4. The cross-section of the connector 4 is square, and the cross-section of the clamping member 5 is triangular. A slot 8 for fitting the root component 1 is provided at one end of the blade 2, and the connector 4 and the clamping member 5 of the root component 1 can be clamped inside the slot 8. A circular groove 20 is provided inside the sleeve 6, and a carbon cloth 21 is installed inside the circular groove 20. The circular groove 20 is used to connect to the output shaft of the motor.

[0027] A limiting groove 7 is opened inside the connecting part 4, and the cross-section of the limiting groove 7 is square. The fixing component 3 is located at the clamping point of the fan blade 2 and the root component 1. The fixing component 3 includes a top plate 9 and a bottom plate 10. A limiting rod 11 is installed in the middle of the lower end of the top plate 9. The cross-section of the limiting rod 11 is a square that matches the limiting groove 7. The limiting rod 11 is located inside the limiting groove 7 to prevent the limiting rod 11 from rotating. A groove 12 is opened inside the upper end of the bottom plate 10, and the lower end of the limiting rod 11 is inserted into the groove 12.

[0028] Positioning rods 13 are installed on both sides of the lower end of the top plate 9, and sleeves 14 are installed on both sides of the upper end of the bottom plate 10. The positioning rods 13 are inserted into the sleeves 14. Through grooves 15 are opened at both ends inside the bottom plate 10. The through grooves 15 are connected with the sleeves 14. The bottom end of the positioning rod 13 is located inside the through grooves 15. Bolts 16 can be placed inside the through grooves 15. The bolts 16 are threadedly connected to the bottom end of the positioning rods 13. The heads of the bolts 16 are limited inside the through grooves 15 to fix the positioning rods 13, so that the top plate 9 and the bottom plate 10 can be connected and fixed, so that the fixing assembly 3 fixes the root assembly inside the slot 8. A sealing layer 17 is installed at the lower end of the bolt 16. The sealing layer 17 can be rubber, sponge, etc., which is filled in the through grooves 15 to reduce rust caused by contact between the bolts 16 and the air.

[0029] The root component 1 includes a base layer 18 and a protective layer 19. Two sets of protective layers 19 are fixedly installed at the upper and lower ends of the base layer 18. The material of the base layer 18 can be a glass fiber board with a thickness of 2 mm. The material of the protective layer 19 can be PM I foam, that is, polymethyl methacrylimide, a lightweight and high-strength foam plastic with a thickness of 3 mm. After the root component 1 and the fan blade 2 are installed, the root component 1 and the fan blade 2 are covered with carbon fiber to further improve the strength of the root component and ensure the overall lightness of the propeller blade.

[0030] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A propeller blade with a root reinforcement protection structure, characterized in that ,include: A root component (1), the root component (1) comprising a connecting piece (4), one end of the connecting piece (4) being provided with a clamping piece (5), the other end of the connecting piece (4) being provided with a sleeve piece (6), and a limiting groove (7) being provided inside the connecting piece (4); A fan blade (2), wherein one end of the fan blade (2) is provided with a slot (8) for engaging with the root assembly (1); A fixing assembly (3), the fixing assembly (3) is located at the clamping position between the fan blade (2) and the root assembly (1), the fixing assembly (3) includes a top plate (9) and a bottom plate (10), a limiting rod (11) is provided at the middle of the lower end of the top plate (9), the limiting rod (11) is located inside the limiting groove (7), a groove (12) is provided inside the upper end of the bottom plate (10), the lower end of the limiting rod (11) is inserted into the groove (12), positioning rods (13) are provided on both sides of the lower end of the top plate (9), sleeves (14) are provided on both sides of the upper end of the bottom plate (10), and the positioning rod (13) is inserted into the sleeve (14).

2. The propeller blade with a root reinforcement protection structure according to claim 1, characterized in that: Through grooves (15) are provided at both ends of the bottom plate (10), the through grooves (15) are communicated with the sleeve (14), the bottom end of the positioning rod (13) is located inside the through groove (15), a bolt (16) is provided inside the through groove (15), the bolt (16) is threadedly connected to the positioning rod (13), and a sealing layer (17) is provided at the lower end of the bolt (16).

3. The propeller blade with a root reinforcement protection structure according to claim 1, characterized in that: The root component (1) comprises a base layer (18) and a protective layer (19), and two groups of the protective layers (19) are fixedly connected to both ends of the base layer (18).

4. The propeller blade with a root reinforcement protection structure according to claim 1, characterized in that: A circular groove (20) is provided inside the sleeve (6), and a carbon cloth (21) is provided inside the circular groove (20).

5. The propeller blade with a root reinforcement protection structure according to claim 1, characterized in that: The cross section of the limiting groove (7) is a square, and the cross section of the limiting rod (11) is a square that matches the limiting groove (7).

6. The propeller blade with a root reinforcement protection structure according to claim 1, characterized in that: The cross section of the connecting piece (4) is square, and the cross section of the clamping piece (5) is triangular.

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