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A method for connecting a transmission shaft and a metal flange with glued screws

A technology of screw connection and transmission shaft, applied in the direction of coupling, rigid shaft coupling, mechanical equipment, etc., can solve the problems of difficulty in ensuring long-term stable load transmission of the transmission shaft, complex load bearing, and reduced connection efficiency, and achieve significant military Benefit and economic benefits, enhanced strength and resistance to deformation, the effect of solving the problem of reliable connection

Active Publication Date: 2011-12-28
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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  • A method for connecting a transmission shaft and a metal flange with glued screws
  • A method for connecting a transmission shaft and a metal flange with glued screws
  • A method for connecting a transmission shaft and a metal flange with glued screws

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The total length of a composite drive shaft for a wind power generation equipment is 600mm. It is assembled by connecting a 480mm-long glass fiber reinforced resin-based composite hollow tube with metal flanges at both ends. The outer diameter of the middle section of the composite tube is 235mm, and the wall thickness is 15mm. The connecting section between the shaft and the flange is 95mm long. The original product uses adhesive bonding to connect the composite material 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 transmission shaft and the metal flanges at both ends is implemented by the patented pin key connection and adhesive joint scheme 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 transmis...

Embodiment 2

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

[0029] (1) Overall design of connection structure

[0030] The connection between the transmission shaft composite material structure and the metal flanges at both ends adopts the screw connection and glue connection scheme designed by this patent, and the mechanical connection part is partially reinforced by hoop winding S4 high-strength glass fiber composite material, and the two The length of end reinforcement is 120mm, and the wall thickness is 23mm to ensure the smooth and reliable transmission of thrust and torque.

[0031] (2) D...

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PUM

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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 transmission shaft and a metal flange with adhesive screws. Background technique [0002] Winding composite transmission shafts are widely used in various fields such as construction machinery, wind power generation, locomotives and ship propulsion devices. Compared with traditional metal transmission shafts, composite transmission shafts are light in weight, corrosion-resistant, large in vibration It is magnetically conductive and maintenance-free. When it is applied to a long shafting system, the number of supporting bearings can be reduced, and it also has a strong displacement compensation function. In the actual application of composite transmission shaft, how to realize the smooth transmission of torsion, tension and compression loads of the shaft system, the design of the connection structure between the main structure of the composite...

Claims

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Application Information

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Patent Type & Authority Applications(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