Hoop type connecting structure for composite thin-walled circular pipes

A composite material and connection structure technology, applied in flange connection, sleeve/socket connection, pipe/pipe joint/pipe fitting, etc., can solve the problems of increased labor intensity and man-hours, damage to thin-walled round pipes, low connection efficiency, etc. Improve the efficiency and safety of disassembly and assembly, avoid secondary processing, and the effect of simple and convenient connection

Inactive Publication Date: 2016-01-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. There are different strategies when installing and removing bolts, which takes a long time, so the efficiency of installation and removal is low;
[0005] 2. Secondary mechanical processing such as opening is required. In addition to increasing labor intensity and working hours, it is also easy to cause damage to the thin-walled round tube, reducing the performance of the thin-walled round tube or even damaging it;
[0006] 3. The required flange width is relatively large. In the limited space such as the wing, the bolted flange connection must be realized by reducing the diameter of the thin-walled circular tube, which reduces the performance of the thin-walled circular tube such as bending stiffness, and the weight ratio is also large.
[0007] It can be seen that the connection efficiency of thin-walled circular tubes made of composite materials is low at present, and the effect is not ideal, which needs to be improved

Method used

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  • Hoop type connecting structure for composite thin-walled circular pipes
  • Hoop type connecting structure for composite thin-walled circular pipes
  • Hoop type connecting structure for composite thin-walled circular pipes

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specific Embodiment approach

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0023] refer to Figure 1 to Figure 9 , a clamp-type connection structure for composite thin-walled round pipes, which includes two pipes 1 to be connected, and flanges 2 are respectively arranged at the docking ports of the two pipes 1 to be connected, and the two flanges 2 are docked, surrounding the two Each flange 2 is provided with two opposite clamps 3, and the two clamps 3 are connected by two or more than two bolts 4, and the inner sides of the two clamps 3 are provided with clamps that are closely matched with the two flanges 2 Groove 3-1; in ...

specific Embodiment approach 1

[0024] Embodiment 1, the opposite surfaces 2-2 of the two flanges 2 are perpendicular to the axes of the two flanges 2, and the two flanges 2 are gradually thinned from the root 2-3 to the edge 2-4, That is, when the thicknesses of the edges 2-4 of the two flanges 2 are all greater than zero, the cross-sections of the two flanges 2 are all right-angled trapezoids, and the cross-sections of the two flanges 2 are combined into an isosceles trapezoid; when the two flanges When the thickness of the edge 2-4 of 2 is equal to zero, the cross-sections of the two flanges 2 are right-angled triangles, and the cross-sections of the two flanges 2 are combined into an isosceles triangle; correspondingly, the depth of the groove 3-1 is greater than or Equal to the width of the flange 2, the width of the card notch 3-1-1 is less than the total thickness of the roots 2-3 of the two flanges 2, the width of the card slot 3-1 is from the card notch 3-1-1 to the card slot Bottom 3-1-2 tapers (eg...

specific Embodiment approach 2

[0025] Specific embodiment two, there is a special case, the opposite surfaces 2-2 of the two flanges 2 are perpendicular to the axis of the two flanges 2, and the two flanges 2 are from the root 2-3 to the edge 2 -4 becomes thinner, the thickness of the edge 2-4 of the two flanges 2 is equal to zero, that is, the cross-sections of the two flanges 2 are right-angled triangles, the cross-sections of the two flanges 2 are combined into an isosceles triangle, and the slot 3 The width of -1 gradually decreases from the card slot opening 3-1-1 to the card slot bottom 3-1-2, and the bottom width of the card slot 3-1 is zero, that is, the bottom of the card slot 3-1 is a sharp corner, and the card slot The width of the opening 3-1-1 is smaller than the total thickness of the roots 2-3 of the two flanges 2, that is, the cross section of the slot 3-1 is an isosceles triangle, and the cross sections of the two flanges 2 are combined to form an isosceles triangle The inclination angle of...

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PUM

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Abstract

The invention provides a hoop type connecting structure for composite thin-walled circular pipes, and belongs to the technical field of composite connection. The problems existing in connection of the composite thin-walled circular pipes at present are solved. The hoop type connecting structure comprises the two pipes to be connected, and is characterized in that butt-joint ports of the two pipes to be connected are each provided with a flange, and the two flanges are in butt joint; two opposite hoops are arranged around the flanges, and the two hoops are connected through two or more bolts; clamping grooves in tight fit with the two flanges are formed in the inner sides of the two hoops respectively, two parallel planes are arranged on the two opposite sides of each flange respectively, and the two ends of each clamping groove are matched with the planes in shape. The hoop type connecting structure is used for connecting the composite thin-walled circular pipes.

Description

technical field [0001] The invention belongs to the technical field of composite material connection, and in particular relates to a clamp-type connection structure for composite material thin-walled round pipes. Background technique [0002] Composite materials are widely used in high-tech fields such as aircraft manufacturing. With the continuous development of composite material theory research and molding technology, the overall performance of composite materials has been greatly improved. However, due to the limitations of the technical level of composite product molding and the needs of practical applications, composite material products must have a certain structural separation surface and process separation surface, so there are inevitably a large number of connection parts in the composite material structure, and the connection of composite materials Parts have always been the weak link in the overall structure of composite products, which affects the full play of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L21/06F16L23/04
CPCF16L21/06F16L23/04
Inventor 蔡朝灿尹维龙王长国赫晓东邹恢燃张振雷
Owner HARBIN INST OF TECH
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