Connecting structure of composite material hollow rod and metal joint
A technology of metal joints and connecting structures, applied in the direction of connecting rods, bearings, shafts and bearings, etc., can solve problems such as structural failure, poor out-of-plane performance of composite materials, insufficient ability to transmit tension and compression loads, etc., to solve slack and avoid complex sexual effect
Active Publication Date: 2017-06-13
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
View PDF4 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] For Boeing’s patented scheme, there are obvious deficiencies in the transmission of compressive loads, and the out-of-plane performance of composite materials is poor. If the compressive load is transmitted through the contact between the composite material section and the metal joint, it is easy to cause the composite material to collapse, resulting in structural failure. fail
In addition, this scheme does not consider the structural relaxation that may be caused by the moisture absorption and aging of composite materials.
For Rolls-Royce's patented solution, it is mainly designed for the torsion transmission shaft, and the transmission capacity of tension and compression loads is insufficient
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0035] A connection structure between a composite material hollow rod and a metal joint, such as figure 1 As shown, the connection structure includes a composite material hollow rod 1, a main metal joint 2 and a secondary metal joint 3; the main metal joint 2 and the secondary metal joint 3 are both hollow structures, connected by a self-locking thread 4, forming a middle thick, two The spindle configuration with thin ends; the composite hollow rod 1 can be formed by laying the composite material on the spindle-shaped structure composed of the main metal joint 2 and the secondary metal joint 3 and solidified.
[0036] Such as figure 2 As shown, the main metal joint can be divided into five parts, and there is no special length relationship between the parts of the main metal joint, which only depends on the cooperation between the parts.
[0037] Described five parts are respectively the first cylinder 201, the first cone 202, the second cylinder 203, the second cone 204 and...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention mainly belongs to the field of structural strength, and particularly relates to a connecting structure of a composite material hollow rod and a metal joint. The connecting structure comprises a composite material hollow rod, a main metal joint and an auxiliary metal joint; both the main metal joint and the auxiliary metal joint are of hollow structures and connected through a self-locking screw thread, and a spindle configuration of which the middle is thick and the two ends are thin is formed; a composite material is covered by the spindle-shaped structure formed by the main metal joint and the auxiliary metal joint, and therefore the composite material hollow rod is solidified and formed, after the composite material hollow rod is solidified, the main metal joint and the auxiliary metal joint are reversely tightened up through the self-locking screw thread, and therefore preload is generated in the internal part of a connecting area of the composite material hollow rod, looseness of connecting structure is prevented, and the fatigue property of the connecting structure is improved.
Description
technical field [0001] The invention mainly belongs to the field of structural strength, and in particular relates to a connection structure between a composite material hollow rod and a metal joint. Background technique [0002] The engine hanger is the main load-bearing part of the aircraft, which can be divided into several parts such as the central box section, the upper fairing and the rear fairing. Among them, the hanging box section is a beam frame structure, which is used to connect the engine and the wing, such as figure 1 shown. For the suspension box section of the super static structure, the lower link is generally used to connect the suspension and the lower surface of the wing, mainly to transmit the engine thrust and bear the tension and compression load. The connecting rod scheme of traditional aircraft design mostly adopts metal connecting rod + metal joint integrated machine-added molding, and the materials used include titanium alloy and high-strength st...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F16C9/00F16C7/00
CPCF16C7/00F16C9/00Y02T50/40
Inventor 李星刘倩温顺达史前张发石经纬季少华胡震东
Owner BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC