Connecting structure of carbon fiber blade and metal matrix

By employing a shoulder bolt hole and pin connection structure between the carbon fiber blade and the metal base, combined with fixing adhesive filling, the problem of unstable connection was solved, achieving a stable and reliable connection and multi-blade adaptability, while reducing processing costs.

CN223563183UActive Publication Date: 2025-11-18SHENYANG SHENFEI SPECIAL EQUIP FACTORY
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Patent Information

Application Number
CN202520134829.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-21
Publication Date
2025-11-18
Estimated Expiration
2035-01-21

AI Technical Summary

Technical Problem

The existing connection between carbon fiber blades and the base is unstable, affecting the performance and making it unsuitable for different blade application scenarios.

Method used

The structure uses bolt holes and pins with shoulders, combined with fixing glue filling, to ensure a stable connection between the blade and the base. The tapered design prevents lateral movement, and the lower end of the blade has a uniform shape to accommodate various blade types.

Benefits of technology

This achieves a robust connection between carbon fiber blades and the metal base, adapting to the usage requirements of different blades and reducing processing costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a connecting structure of a carbon fiber blade and a metal matrix, which comprises a base, the base comprises a groove matched with the shape of the lower end of the blade, and the lower end of the blade is embedded into the groove; symmetrical bolt holes with shoulders are formed in the base at the two ends of the blade; a plurality of sets of pin holes are formed in the positions, corresponding to the shoulder heights, of the two ends of the blade. Pins penetrate through the pin holes to connect the blade and the base into a whole. The two ends of the pin abut against the radial outer ends of the bolt caps. The gaps between the pins and the pin holes and the gaps between the bolts and the bolt holes are filled with fixing glue. The utility model has the advantages that the structure is reasonable, the connection is firm and safe, the same base can be matched with different blades, and a large amount of processing cost can be saved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to blade technical field, specifically a kind of connecting structure of blade and base. BACKGROUND

[0002] With the widespread application of carbon fiber material blade, the problems encountered in its use also increase accordingly, for example, the existing carbon fiber blade and base connection generally adopts simple bolt fixing mode, often causes blade and base connection unstable in use, affect use effect. SUMMARY

[0003] To solve the above technical problems, the utility model aims at providing a kind of connecting structure of carbon fiber blade and metal base, can stably connect the two into one, and firm and reliable, more important, can be used according to the use scene of blade, same base can be matched with different blades. The specific technical scheme is as follows:

[0004] A kind of connecting structure of carbon fiber blade and metal base, including base, the base includes the recess matched with the shape of blade lower end, the lower end of blade is embedded in the recess;Base is provided with the bolt hole with shoulder symmetrically on the both ends of blade;The height of corresponding shoulder of the both ends of blade is provided with multiple pin holes, pin passes through the pin hole and connects blade and base into one;The both ends of the pin and the radial outer end of bolt cap abut;The gap between the pin and pin hole, the gap between bolt and bolt hole are filled with fixed glue.

[0005] The recess and blade are also filled with fixed glue.

[0006] The pin is three, symmetrically arranged.

[0007] The pin hole and pin have taper, and the taper direction of adjacent pin and pin hole is opposite.

[0008] To ensure the unity of different blades and base, the lower end of the blade is the same shape.

[0009] The utility model has the advantages of reasonable structure, firm and safe connection, same base can match different blades, can save a lot of processing cost. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of the utility model;

[0011] Figure 2 It is Figure 1 The top view. DETAILED DESCRIPTION

[0012] The utility model discloses a base 2, the base 2 includes the recess 3 with the shape matching of blade 1 lower end, and the lower end of blade 1 is embedded in recess 3, and the base 2 on both ends of blade 1 is provided with the bolt hole 4 of symmetrical shoulder with, and the shoulder height of blade both ends is set up multiple groups of pin hole 7, and the pin 8 passes through pin hole 7 and is connected into an organic whole with the base 2 with blade 1, and the both ends of pin 8 and the radial outer end of bolt 6 cap abut to prevent the pin 8 from running out, and the clearance between pin 8 and pin hole 7, the clearance between bolt 6 and bolt hole 4 are filled with fixed glue 5.

[0013] The recess 3 and blade 1 are also filled with fixed glue 5.

[0014] The pin 8 is three, and is symmetrically arranged.

[0015] The pin hole 7 and pin 8 have taper, and the taper direction of adjacent pin and pin hole is opposite, and the structure guarantees that blade will not move transversely in recess.

[0016] To guarantee the unity of different blade 1 and base 2, the lower end of blade 1 is the same shape, and correspondingly, the recess 3 also keeps the same shape.

Claims

1. A structure for connecting a carbon fiber blade to a metal base, characterized by: The base comprises a groove matching the shape of the lower end of the vane, and the lower end of the vane is embedded in the groove; symmetric bolt holes with shoulders are arranged on the base at both ends of the vane; a plurality of groups of pin holes are arranged on the corresponding shoulders at both ends of the vane, and the pins pass through the pin holes to connect the vane and the base into an integrated body; the two ends of the pins abut against the radial outer ends of the bolt caps; the gaps between the pins and the pin holes and the gaps between the bolts and the bolt holes are all filled with fixing glue.

2. The structure of the connection of the carbon fiber blade and the metal matrix according to claim 1, characterized in that: The gaps between the groove and the vane are also filled with fixing glue.

3. The structure of the connection of the carbon fiber blade and the metal matrix according to claim 1, characterized in that: The pins are three, symmetrically arranged.

4. The structure of the connection of the carbon fiber blade and the metal matrix according to claim 1, characterized in that: The pin holes and the pins are tapered, and the taper directions of the adjacent pins and pin holes are opposite.

5. The structure of the connection of the carbon fiber blade and the metal matrix according to claim 1, characterized in that: The lower ends of the vanes are of the same shape.