CN208452347U - A kind of metal blade root and nonmetallic blade connection structure - Google Patents
A kind of metal blade root and nonmetallic blade connection structure Download PDFInfo
- Publication number
- CN208452347U CN208452347U CN201821192158.3U CN201821192158U CN208452347U CN 208452347 U CN208452347 U CN 208452347U CN 201821192158 U CN201821192158 U CN 201821192158U CN 208452347 U CN208452347 U CN 208452347U
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- Prior art keywords
- blade
- blade root
- metal
- root
- metal blade
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to Design of Mechanical Structure, more particularly to a kind of metal blade root and nonmetallic blade connection structure, it include: blade, cover the metal blade root outside blade, limiting section set on blade one end and the injection molded layers that are filled between blade and metal blade root, multiple grooves are uniformly equipped with around metal blade root inner wall, limiting section and resigning portion are interference fitted, can preventing blade, blade is detached from from metal blade root by centrifugal force effect during rotation, design is reasonable, it is easy to install and use, groove on metal blade root inside can prevent blade from being slided during rotation by axial torque, it is connected firmly, securely and reliably.
Description
Technical field
The utility model relates to Design of Mechanical Structure more particularly to a kind of metal blade root and nonmetallic blade connection structures.
Background technique
Nonmetallic composite blade is the main component of the rotatable parts such as blower and propeller, is generally connected by metalwork
Wheel hub, composite material and metal blade root fastenings, transmitting is pneumatic and load, and composite material blade is not when to guarantee rotatable parts work
Can throw away, it is necessary to rationally design the connection structure between metal blade root and composite material blade, traditional metal blade root with it is compound
Material blade connection structure is complicated, and weight is big and molding and assembly process process are poor, meanwhile, rotatable parts can produce during rotation
Raw axial rotation, metal blade root and composite material blade coupling part are easy to produce sliding, influence normal use, there are safety
Hidden danger.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and it is steady to provide a kind of connection
Gu and the metal blade root slided between metal blade root and composite material blade and nonmetallic blade connection structure can be prevented.
The utility model is to be achieved by the following technical programs:
A kind of metal blade root and nonmetallic blade connection structure characterized by comprising blade, the gold covered outside blade
Belong to blade root, the limiting section set on blade one end and the injection molded layers that are filled between blade and metal blade root,
The limiting section is the inverted wedge shape being wound on blade by glass-fiber-fabric, and metal blade root is close to limiting section one end
Inner wall is equipped with resigning portion, and resigning portion internal diameter is greater than metal blade root internal diameter, and limiting section and resigning portion interference fit make blade and metal
Blade root fastenings are uniformly equipped with multiple grooves around metal blade root inner wall.
Preferably, the depth of groove is 1mm.
The beneficial effects of the utility model are:
Limiting section and resigning portion are interference fitted, and can preventing blade, blade is acted on by centrifugal force from gold during rotation
Belong to and being detached from blade root, rationally, easy to install and use, the groove on metal blade root inside can prevent blade in rotation process for design
In slided by axial torque, be connected firmly, securely and reliably.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the utility model.
Fig. 2 is the structural schematic diagram of metal blade root.
In figure: 1. blades, 2. metal blade roots, 3. limiting sections, 4. injection molded layers, 5. resigning portions, 6. grooves.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing
The utility model is described in further detail with most preferred embodiment.
As shown, the utility model includes: blade 1, covers the metal blade root 2 outside blade, the limit set on blade one end
Position portion 3 and the injection molded layers 4 being filled between blade and metal blade root,
The limiting section is the inverted wedge shape being wound on blade by glass-fiber-fabric, and metal blade root is close to limiting section one end
Inner wall is equipped with resigning portion 5, and resigning portion internal diameter is greater than metal blade root internal diameter, and resigning portion provides the space of the limiting section of wedge shape, limit
Position portion and resigning portion interference fit make blade and metal blade root fastenings, and blade is acted on by centrifugal force when blade rotates, limiting section
Wedge structure and resigning portion between be interference fitted, can prevent blade from slipping from metal blade root, around metal blade root inner wall
Multiple grooves 6 are uniformly equipped with, in blade rotation process, blade will receive axial torque, by groove structure and injection molded layers,
Blade can be prevented, which to be rotated about axis, to be caused to slide, and realizes metal blade root and nonmetallic composite blade through this structure
It is bonded, so that composite material can be used in blade, reduces leaf weight, reduce energy consumption and noise, while conveniently setting
Meter personnel are according to the size design root of blade size of wheel hub.
According to above-described embodiment, it is preferred that the depth of groove is 1mm, can not only play the left and right for preventing rotation, but also can
To guarantee the intensity of metal blade root Yu blade connection structure.
Connection structure in the present embodiment is formed by following steps:
A. metal blade root is covered on blade, and leaks out blade root end, winding glass-fiber-fabric is formed in blade root
The limiting section of inverted wedge shape protrusion, metal blade root, which is retracted, is interference fitted the resigning portion in limiting section and metal blade root；
B. resin is injected into the gap between metal blade root and blade, and injection molded layers, the present embodiment are formed after curing molding
Used in injection molding manner be RTM injection molding；
C. the redundance milling of blade root is smooth.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of metal blade root and nonmetallic blade connection structure characterized by comprising blade, the metal covered outside blade
Blade root, the limiting section set on blade one end and the injection molded layers that are filled between blade and metal blade root,
The limiting section is the inverted wedge shape being wound on blade by glass-fiber-fabric, and metal blade root is close to limiting section one end inner wall
Equipped with resigning portion, resigning portion internal diameter is greater than metal blade root internal diameter, and limiting section and resigning portion interference fit make blade and metal blade root
Connection is uniformly equipped with multiple grooves around metal blade root inner wall.
2. a kind of metal blade root according to claim 1 and nonmetallic blade connection structure, which is characterized in that the groove
Depth is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821192158.3U CN208452347U (en) | 2018-07-25 | 2018-07-25 | A kind of metal blade root and nonmetallic blade connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821192158.3U CN208452347U (en) | 2018-07-25 | 2018-07-25 | A kind of metal blade root and nonmetallic blade connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208452347U true CN208452347U (en) | 2019-02-01 |
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ID=65180631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821192158.3U Active CN208452347U (en) | 2018-07-25 | 2018-07-25 | A kind of metal blade root and nonmetallic blade connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208452347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108673914A (en) * | 2018-07-25 | 2018-10-19 | 天津中车风电叶片工程有限公司 | A kind of metal blade root and nonmetallic blade connection structure and connection method |
-
2018
- 2018-07-25 CN CN201821192158.3U patent/CN208452347U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108673914A (en) * | 2018-07-25 | 2018-10-19 | 天津中车风电叶片工程有限公司 | A kind of metal blade root and nonmetallic blade connection structure and connection method |
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