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Glued jointing and screw connection method between transmission shaft and metal flanges

A technology of screw connection and transmission shaft, which is applied in the direction of couplings, rigid shaft couplings, mechanical equipment, etc., can solve the problems that it is difficult to ensure the long-term stable transmission of loads of the transmission shaft, the load is complicated, and the connection efficiency is reduced, achieving significant military Benefits and economic benefits, enhanced strength and deformation resistance, and the effect of solving reliability connection problems

Active Publication Date: 2013-06-05
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The connection between composite material and metal is mainly divided into three types: mechanical connection, adhesive connection and hybrid connection. Due to the complex bearing load of the composite material drive shaft, it is usually difficult to ensure the long-term stable load transmission of the drive shaft by using a single connection method. , for example, the composite material transmission shaft used in wind power generation is connected with the metal transmission mechanism by glue joint, and the glue layer often breaks and falls off after long-term use
In addition, the fiber-wound composite material is brittle and anisotropic, and mechanical connection is likely to lead to stress concentration at the connection part and reduce connection efficiency.

Method used

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  • Glued jointing and screw connection method between transmission shaft and metal flanges
  • Glued jointing and screw connection method between transmission shaft and metal flanges
  • Glued jointing and screw connection method between transmission shaft and metal flanges

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The total length of the composite material drive shaft for a wind power generation equipment is 600mm, which is assembled by a 480mm long glass fiber reinforced resin-based composite material hollow tube and metal flanges at both ends. The outer diameter of the middle section of the composite material tube is 235mm, and the wall thickness is 15mm. The length of the connecting section between the shaft and the flange is 95mm. The original product used glue to connect the composite shaft and the metal flange. Now the following connection scheme is adopted.

[0019] (1) Overall design of connection structure

[0020] The connection between the composite material structure of the drive shaft and the metal flanges at both ends is implemented by the pin-key connection and gluing scheme designed by this patent to ensure the smooth and reliable transmission of thrust and torque.

[0021] (2) Design of the connection structure between the main structure of the winding composite ...

Embodiment 2

[0028] The total length of a composite material intermediate shaft for a ship is 1200mm, which is assembled by a 1100mm long carbon fiber reinforced resin matrix composite hollow tube and metal flanges at both ends. The outer diameter of the middle section of the composite tube is 280mm, and the wall thickness is 18mm. The blue connecting section is 95mm long. In the original design, the composite shaft and the metal flange were mechanically connected by screws, and the following connection scheme is now used.

[0029] (1) Overall design of connection structure

[0030] The connection between the composite material structure of the drive shaft and the metal flanges at both ends is implemented by the screw connection and gluing scheme designed by this patent, and the mechanical connection parts are locally reinforced by circumferentially wound S4 high-strength glass fiber composite material. The end reinforcement length is 120mm and the wall thickness is 23mm to ensure the smo...

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Abstract

The invention introduces a glued jointing and screw connection method between a transmission shaft and metal flanges; the main structure of a transmission shaft which is formed by winding and is made of a composite material and metal flanges on both ends are integrated by glued jointing and screw connection; connected parts between the main structure and the flanges are thickened by winding fibers on the composite material; dirt on an adhesive surface is removed by cleaning, and the adhesive surface is rough to some extent; the adhesive surface is adhered by adhesive; then drilling is carriedout; and finally the adhesive is uniformly coated on a pin or a screw and the side wall of a hole, and the pin is pressed into the hole or is assembled into an assembly hole through the screw. The glued jointing structure of the glued jointing and screw connection method between the transmission shaft and metal flanges has a certain deformation capability, so that the problem of the concentrated stress on the connection part is reduced, the integration of glued jointing and screw connection enhances the strength and the anti-deformation capability of the connection part, the stable transmission of torsion, tension and pressure load is realized, the problem of the reliable connection the transmission shaft which is formed by winding and is made of the composite material can be effectively solved, and the application of the composite material in wider fields as the material of the main structure of the transmission shaft is promoted.

Description

technical field [0001] The invention relates to a composite material connection technology, in particular to a method for connecting a drive shaft and a metal flange with glued screws. Background technique [0002] Winding composite drive shafts are widely used in various fields such as construction machinery, wind power generation, locomotives and marine propulsion devices. Compared with traditional metal drive shafts, composite drive shafts are light in weight, corrosion-resistant, large in vibration attenuation, low in noise, and less expensive. Magnetically conductive, maintenance-free, when applied to a long shaft system, the number of support bearings can be reduced, and it also has a strong displacement compensation function. When the composite drive shaft is used in practice, how to realize the smooth transmission of torsional, tensile and compressive loads of the shaft system, the design of the connection structure between the main structure of the composite drive s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D1/033F16D1/027
Inventor 郑劲东樊晓斌杨勇
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP