JPS63295783A - Clamp for ropes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a non-metallic rope fastener suitable for use in environments where metal corrosion is likely to occur.

(Prior Art) Conventionally, ropes have generally been metal ropes such as wire ropes, and metal fasteners have usually been used as their fasteners.

However, in recent years, synthetic fiber ropes, carbon fiber ropes, inorganic fiber ropes, Non-metallic ropes, such as high-strength, superstretched polymer ropes, are increasingly being used.

However, even with the change to non-metallic ropes, the current situation is that the old-fashioned metal fasteners are still used as fasteners for these ropes.

[Problem that the invention seeks to solve]

Therefore, even if the corrosion resistance of the rope was improved and the weight reduced, there was a problem in that the important end fixing part would be corroded and damaged.

(Means for Solving the Problems) As a result of repeated research in order to solve the above-mentioned problems, the inventors of the present invention have developed a screw member made of reinforced plastic made of a previously invented curable resin and a reinforcing fiber bundle. By integrating the knowledge obtained through the invention and the knowledge obtained through the development of non-metallic ropes such as super-stretched high-strength ropes, and by further developing this knowledge, we have arrived at the invention of the fastener of the present invention.

That is, the present invention provides a rope fastening device in which the end portion of a non-metallic rope is inserted into a cylindrical body made of long fiber reinforced plastic and fixed and crimped with an adhesive.

The present invention will be explained in detail below.

The material of the rope used in the present invention can be any strong non-metallic material, but preferably carbon fiber, aramid fiber, polyarylate I
II, ultra-high molecular weight matrix polyethylene fiber, ultra-drawn polymer fiber, such as polyoxymethylene ultra-drawn tIAM'Fj. All of these fibers are known as high-performance fibers having a tensile strength of 10 (R/-) or more.

Furthermore, since materials other than carbon fibers are non-electrically conductive, they are particularly suitable for use in areas where the use of metal fittings is discouraged.

Ropes of these fibers can be manufactured by conventional or new rope making techniques. Note that it is often difficult to apply conventional fastening methods to these new ropes as they are.

The fastener of the present invention is made of a long fiber reinforced plastic composed of a thermosetting resin and a reinforced long fiber bundle. Here, as the thermosetting resin, resins normally used in fiber-reinforced plastics, such as epoxy resins, unsaturated polyester resins, and vinyl ester resins, are used.

In addition, as the reinforcing long fiber bundle, long fibers of glass [1, carbon MIi fiber, aramid fiber, and other inorganic fibers (length 1 c
rn or more), preferably a composition thereof, such as a mat, a woven fabric, a filament wound rod, a knitted fabric, or a three-dimensional combination thereof, and particularly preferably a cylindrical A plurality of shaped knitted fabrics are stacked and aligned in the long sleeve direction of the fastener.

The cylindrical body of the fastener of the present invention is obtained by filling a bundle of the above-mentioned long fibers, such as a multi-layered tubular knitted fabric, with the above-mentioned epoxy resin, etc. and hardening it, and processing it into the desired shape and structure. It can be manufactured by

Furthermore, the fastener of the present invention can be manufactured by inserting the end of a non-metallic rope into the cylindrical body and fixing it with an adhesive.

Note that any plastic adhesive with strong adhesive strength can be used, but epoxy resin adhesive is particularly preferred.

The shape and structure of the fastener of the present invention take the form of a scale (F
? However, some preferred examples are listed below.

■ Figure 1 shows a standard cylindrical fastener. This is done by inserting the rope into the aforementioned long NaM-reinforced plastic tube, fixing it with a suitable adhesive, and holding and fixing this fastener in a suitable manner.

■ The example shown in Figure 2 is one in which the inner wall of the cylindrical body made of long fiber-reinforced plastic is threaded or provided with protrusions or grooves sloping in the long sleeve direction, and the adhesive This makes the holding more solid and ensures the fixation.

■ In the example shown in Figure 3, a hole is provided at one end of the cylindrical body made of long fiber-reinforced plastic, and a bolt or nut made of long fiber-reinforced plastic can be inserted into this hole to help fix the fastener, or The hole is used to hang it, or it is connected to another rope or the like and used to fix the fastener.

■ In the example shown in Figure 4, a part of the outer periphery is threaded or has an uneven surface, and this part is embedded and fixed in concrete or other materials, or screwed with other glue. It is used.

〔Effect of the invention〕

By selecting its shape and structure, the fastener of the present invention can withstand any fastening force. Also, its weight is extremely light compared to steel, and unlike steel or light metals, it does not rust. Moreover, since the ropes used in the present invention are made of rust-free materials, they have the advantage of not being corroded over time. Furthermore, it has the advantage of being resistant to acids and alkalis.

Therefore, the present invention makes it possible to use the rope in places where there are acidic substances in the sea or in the natural environment (for example, acid rain, volcanoes, or acidic steam from hot springs), and it can also be used in environments with harsher temperatures and direct sunlight than normal environments. It has the effect of embodying an excellent fastening method that can withstand even the worst conditions.

(Example〕 Hereinafter, the present invention will be specifically explained with reference to Examples.

Example 1 Inner diameter 28m+, outer diameter 60#1#t cut from an epoxy resin rod filled and reinforced with glass fiber fabric of 70% of the total weight
A rope with a (7X7) structure made of ultra-stretched polyacetal fibers (tensile strength 1.5 GPa, tensile modulus 40 GPa) with a diameter of 1.0 TrL/m (tensile strength 1.5 GPa, tensile modulus 40 GPa) is placed in a cylinder with a length of 20 cm and is coated with epoxy resin (Araldite Rapid ■) was used to adhesively fix it. The handling strength of this product was 3.6 tons or more. When this rope restraining device was left in the sea for 1 fE, no apparent change was observed, and its restraining strength was over 3.6 tons (3.6 tons without breaking).
there were.

[Brief explanation of drawings]

FIG. 1(a) is a sectional view in the long sleeve direction of a standard cylindrical fastening device, which is an embodiment of the fastening device for ropes of the present invention, and FIG. 1(b) is a cross-sectional view in the diametrical direction It is a diagram. FIG. 2 is a cross-sectional view in the long-sleeve direction showing another embodiment in which the inner wall of the cylindrical body of the fastener is provided with unevenness;
FIG. 3(A) is a sectional view in the long sleeve direction showing an example in which a hole is provided in one end of the cylindrical body of the fastener, and FIG. 3(B) is a perspective view thereof. FIG. 4 is a sectional view in the long sleeve direction showing an example in which a threaded portion is provided on the outer periphery of one end of the cylindrical body of the fastener and is used as a stud bolt. DESCRIPTION OF SYMBOLS 1... Cylindrical body, 2... Rope, 3... Adhesive, 4... Hole, 5... Thread part

Claims (1)

[Claims] 1. A rope fastener, which is made by inserting the end of a non-metallic rope into a cylindrical body made of long fiber-reinforced plastic and fixing it with an adhesive. 2. The rope fastener according to claim 1, wherein the adhesive is an epoxy resin adhesive. 3. Retaining of ropes according to claim 1, wherein the cylindrical body is a cylindrical body having thread-like irregularities on its inner wall, or protrusions or grooves having an inclination in the longitudinal direction. Ingredients. 4. A fastener for ropes according to claim 1, wherein the cylindrical body is a cylindrical body having a hole for attaching the fastener at one end thereof. 5. The rope fastener according to claim 1, wherein the cylindrical body has one end screw-shaped, and the cylindrical body functions as a stud bolt for concrete or other material.