CN213878589U

CN213878589U - Fiber bearing joint with high strength

Info

Publication number: CN213878589U
Application number: CN202023079673.0U
Authority: CN
Inventors: 姚宇荃; 刘京阳; 周磊; 张道龙; 刘涛; 周金东
Original assignee: AVIC Chengdu Aircraft Design and Research Institute
Current assignee: AVIC Chengdu Aircraft Design and Research Institute
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-08-03
Anticipated expiration: 2030-12-17

Abstract

The utility model belongs to the technical field of the aeronautical engineering is used, concretely relates to fibre load connects with high strength. The fiber force-bearing joint comprises a hexagonal pull cap (1), a round pull cap (2) and a mandrel (3); the outer wall of the hexagonal pulling cap (1) is in threaded connection with the inner wall of the round pulling cap (2); the inner wall of the hexagonal pulling cap (1) is a conical surface, and the mandrel (3) is a cone with a through hole inside; the mandrel (3) is positioned inside the hexagonal pulling cap (1); the outer conical surface of the mandrel (3) is matched with the conical surface of the hexagonal pulling cap (1) and is used for clamping fibers. The connector can protect the performance of the fiber material to the maximum extent, improve the reliability of the performance of the connector and reduce the connection difficulty.

Description

Fiber bearing joint with high strength

Technical Field

The utility model belongs to the technical field of the aeronautical engineering is used, concretely relates to fibre load connects with high strength.

Background

In recent years, high polymer fiber materials and aramid fiber materials gradually replace steel wires to be used for manufacturing cables, ropes and the like, are widely applied to military and civil fields, and fully exert the advantages of light weight, small volume, flexibility and easiness in winding.

However, the fiber has poor shear resistance, and the current connection technology cannot ensure that the high-strength performance of the material is fully exerted. The current connection technology mainly has the following problems:

firstly, in the traditional connection process, fiber materials are damaged due to clamping of joints, and the fiber strength of the connection part is seriously reduced; if the joint is not sufficiently clamped, the joint may not be tightly connected and the joint may be separated from the material. Secondly, due to the uncertainty of the connection, the degree of damage of the fibers also varies, resulting in a greater dispersion of the strength of the connection. Finally, there is no mature process to ensure the reliability of the connection. In summary, the connecting technology of the fiber material has been a difficult point, and the application of the fiber material is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the fiber bearing joint with high strength is provided, the performance of a fiber material can be protected to the maximum extent, the reliability of the performance of the joint is improved, the connection difficulty is reduced, and the connection is easy to operate and can be repeated; meanwhile, the full play of the material performance is ensured.

The technical scheme of the utility model: providing a fiber messenger joint with high strength comprising a hexagonal cap 1, a round cap 2, and a mandrel 3;

the outer wall of the hexagonal pulling cap 1 is in threaded connection with the inner wall of the round pulling cap 2; the inner wall of the hexagonal pulling cap 1 is a conical surface, and the mandrel 3 is a cone provided with a through hole; the mandrel 3 is positioned inside the hexagonal pulling cap 1; the outer conical surface of the mandrel 3 is matched with the conical surface of the hexagonal pulling cap 1 and used for clamping fibers.

Optionally, the fiber messenger joint further comprises a washer 4; the washer 4 is limited by the boss arranged inside the round pull cap 2 and is in contact with the end part of the hexagonal pull cap 1, so that the abrasion of fibers is reduced.

Optionally, one end, away from the hexagonal pull cap 1, of the round pull cap 2 is provided with a pin shaft 5, so that the round pull cap 2 can be rotated conveniently.

Optionally, the taper of the conical surface of the hexagonal pulling cap 1 is the same as that of the conical surface of the mandrel 3.

Optionally, the hexagonal pulling cap 1, the circular pulling cap 2, the washer 4 and the mandrel 3 are made of stainless steel.

Optionally, before the mandrel 3 and the hexagonal cap 1 clamp the fiber, the surface of the mandrel 3 is coated with colloid.

The technical effects of the utility model: the fiber bearing joint with high strength is provided, the performance of the fiber material can be protected to the maximum extent, the connection between the fiber material and the joint is realized, and the full play of the material performance is ensured; the reliability of the performance of the joint is improved, the connection difficulty is reduced, and the connection is easy to operate and can be repeated.

Drawings

Fig. 1 is a top view of a fiber messenger joint;

fig. 2 is a cross-sectional view a-a of a fiber messenger joint;

fig. 3 is an isometric view of a fiber messenger joint;

fig. 4 is a connection flow diagram of a cable.

Detailed Description

Referring to fig. 1, 2 and 3, this embodiment provides a high strength fiber messenger joint that includes a hexagonal cap 1, a round cap 2 and a mandrel 3. The outer wall of the hexagonal pulling cap 1 is in threaded connection with the inner wall of the round pulling cap 2; the inner wall of the hexagonal pulling cap 1 is a conical surface, and the mandrel 3 is a cone provided with a through hole; the mandrel 3 is positioned inside the hexagonal pulling cap 1; the outer conical surface of the mandrel 3 is matched with the conical surface of the hexagonal pulling cap 1 and used for clamping fibers.

In the embodiment, the taper of the conical surface of the hexagonal pulling cap 1 is the same as that of the conical surface of the mandrel 3. Before the mandrel 3 and the hexagonal cap 1 clamp the fibers, the surface of the mandrel is coated with colloid, so that the connection reliability of the fibers is further improved, and the strength dispersity of joints is reduced. In the embodiment, the hexagonal drawing cap 1, the circular drawing cap 2 and the mandrel 3 are provided with through holes.

Further, the fiber force bearing joint also comprises a gasket 4; the gasket 4 is limited on the inner wall of the round pull cap 2 and is in contact with the end part of the hexagonal pull cap 1, so that the abrasion of fibers is reduced.

Further, the round pull cap 2 is provided with a pin shaft 5 at one end far away from the hexagonal pull cap 1, so that the round pull cap 2 can be rotated conveniently.

In addition, in this embodiment, the hexagonal cap 1, the circular cap 2 and the mandrel 3 are made of stainless steel, and if the number is: 022Cr17Ni₁₂Mo₂The stainless steel material of (2); of course, other materials may be used.

Taking a certain type of cable as an example, the cable is composed of an electric wire and a fiber material, and the fiber material wraps the electric wire. As described in conjunction with fig. 4, the application method of this embodiment includes the following steps:

scrubbing the outer surface of the mandrel by using acetone; epoxy resin glue is fully mixed and evenly mixed according to the proportion of A to B2: 1, injection is introduced, and the glue is fully coated on the outer layer of the mandrel; the fiber material is uniformly paved on the outer surface of the mandrel, the position is adjusted by using tweezers, and the fiber material can be added for multiple times if necessary, so that the fiber material is ensured to fully absorb glue solution; and fully pressing the bonded mandrel into the hexagonal pulling cap, then connecting the mandrel with a gasket and the circular pulling cap in a threaded manner, keeping the joint in a vertical state, and standing for more than 48 hours.

In the embodiment, the electric wire passes through the circular pull cap, the hexagonal pull cap and the gasket through the central hole of the mandrel; the fiber material is used as a main bearing material and is uniformly dispersed on the outer surface of the mandrel. The mandrel can protect the electric wire in the hole from external force, and the performance of the electric wire is effectively ensured.

In this embodiment, the mandrel and the hexagonal cap structure are compressed, and the tensile effect of the structural body is achieved by using the friction force between the tapered structure and the fiber. The connection mode can reduce fiber damage to the maximum extent and increase the utilization rate of the fibers. The wire can pass through the joint through the central hole of the mandrel, so that the wire and the fiber are separated, and the fiber is used as a main bearing material, so that the wire is not stressed, and the normal work of the wire is ensured.

In the embodiment, the epoxy resin adhesive with good activity is used for bonding the fibers, and the adhesive has strong bonding performance and good tensile property. And fully infiltrating and bonding the fibers and the joints by using epoxy resin glue, and curing. After solidification and cementation, the epoxy resin glue can fill the whole double-conical-surface structure, the fiber and the joint are integrated into a whole, and the fiber and the joint can be inserted into the joint in a manner of being equivalent to structural members with the same strength and the same modulus, so that the integral tensile effect is realized.

The force bearing joint of the embodiment is successfully applied to a certain airplane dragging type bait, and effectively supports the bait to be ejected and dragged. The application result shows that: the joint can improve the strength and stability of the fiber joint.

Claims

1. A fiber messenger joint with high strength, characterized in that it comprises a hexagonal cap (1), a circular cap (2) and a mandrel (3);

the outer wall of the hexagonal pulling cap (1) is in threaded connection with the inner wall of the round pulling cap (2); the inner wall of the hexagonal pulling cap (1) is a conical surface, and the mandrel (3) is a cone with a through hole inside; the mandrel (3) is positioned inside the hexagonal pulling cap (1); the outer conical surface of the mandrel (3) is matched with the conical surface of the hexagonal pulling cap (1) and is used for clamping fibers.

2. The fiber messenger joint of claim 1 further comprising a washer (4); the gasket (4) is limited on the boss arranged inside the round pull cap (2) and is in contact with the end part of the hexagonal pull cap (1) for reducing the abrasion of fibers.

3. The fiber carrier joint as claimed in claim 1, wherein a pin (5) is arranged at one end of the round pull cap (2) far away from the hexagonal pull cap (1) to facilitate the rotation of the round pull cap (2).

4. The fiber messenger joint of claim 1 wherein the taper of the conical surface of the hexagonal cap (1) is the same as the taper of the conical surface of the mandrel (3).

5. The fiber carrier joint as defined in claim 1, wherein the hexagonal cap (1), the circular cap (2), the mandrel (3) and the washer (4) are made of stainless steel.

6. The fiber messenger joint of claim 1 wherein the mandrel (3) surface is coated with a gel before the mandrel (3) and the hexagonal cap (1) clamp the fiber.