JPH06136676A - Wire rope having satsuma @(3754/24)connection method) inserting part covered with resin and its packaging method - Google Patents

Abstract

PURPOSE:To secure safety of operation of SATSUMA (a connection method by interwinding wires) inserting part of a wire rope having an eye splice part and adopt also to severe operation conditions. CONSTITUTION:A SATSUMA inserting part 3 of a wire rope 1 equipped with an eye splice part is covered with an ingot mold and a two-pack type thermosetting resin is poured therein and the resin is cured and removed from the mold to form a grip 4 integrally covered with the thermosetting resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ice price processing (eye processing) used for slinging work and fixing of cargo to be placed.
The present invention relates to ensuring the safety and mechanical strength of the connection part and the connection (short splice) part of two ropes.

[0002]

2. Description of the Related Art Wire rope eye processing terminal or 2
The short splice part that connects the ends of the wire rope of the book is wound by inserting the unraveled wire along the strand of the rope body (kneading), or by braiding in the direction opposite to the twisting direction of the body. There is a basket. In these spigot or basket insertion parts (both of which are commonly referred to as Satsuma insertion, hereinafter simply referred to as “Satsuma insertion part”), the end protruding portion of the strand is bearded, but slightly protrudes from the rope body. Since it is unavoidable and dangerous, it is mandatory to wear leather gloves when working. However, it may cause cuts on other body parts and clothes. There is also a problem that it is difficult to work with leather gloves.

As a measure against this, at present, a cloth tape impregnated with an adhesive material is wound around the hook-and-loop insertion portion and wound, placed in advance through a rubber tube on the rope body, and inserted and attached to the hook-and-loop insertion portion, and covered with an aluminum material. Methods such as crimping are used. However, the first method is fragile, the second method is difficult and temporary to install due to strong rubber elasticity, and the third method requires a large press for crimping, which makes on-site construction difficult. In addition, aluminum materials have a problem that they are easily corroded by seawater, etc., and appropriate measures are required.

[0004]

In view of the above situation, the present inventors have researched a coating method which is relatively easy to process and which has a relatively strong strength and is durable in place of the above method. The curable resin has high strength and excellent adhesion to steel,
In addition, the present invention has been completed, focusing on the fact that it penetrates into the gap between the strands of the helix and can be firmly and integrally molded.

[0005]

According to the present invention, a wire rope is characterized in that the tacking portion is integrally covered with a synthetic resin, and the pouring is performed by covering the tacking portion. Provided is a method of encapsulating a wire rope holding part, which comprises attaching a mold template, casting a thermosetting resin for casting into the mold, and removing the mold after curing. That is, the sagging part is covered with a thermosetting resin, and the protruding strands of the caulking part are embedded in the resin layer to ensure the safety and mechanical strength of the wire rope operation.

An example of the wire rope obtained by the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of the wire rope 1, in which an ice price 2 is applied to the wire rope 1, and the rope end serves as a tapping portion 3. A grip 4 made of a thermosetting resin integrally covers the pincer portion 3.

As a resin for encapsulating the hammering part, it has a high mechanical strength and is excellent in toughness, abrasion resistance, corrosion resistance, weather resistance, etc. because it withstands harsh working conditions, and it penetrates into the gap between the strands of the wire rope. It is necessary to be integrally connected to the finger holder. As a material that satisfies these conditions, one that has high adhesiveness to steel and does not shrink in volume upon hardening is used, and a one-component thermosetting resin may be used, but a two-component thermosetting resin for casting. A resin is preferable, and examples thereof include polyurethane for casting and epoxy resin for casting. As a method of integrally encapsulating the Satsuma insertion part, the Satsuma insertion part is encased in upper and lower half molds and a casting resin is injected under pressure. After curing, the mold may be removed. After removing dirt and oil on the surface in advance, heat the Satsuma insert part if necessary,
A mold is attached and a well-mixed thermosetting resin for casting is cast. As a casting method, casting may be performed from a pressure tank storing the mixed resin solution, or a shotgun injection machine may be used. According to the latter method, it is possible to perform on-site processing at the place where the Satsuma insertion is applied.

[0008]

According to the present invention, by using the thermosetting resin for casting in the tapping portion, the resin solution enters the gap between the strands and is firmly bonded to the wire rope strand without shrinking during curing. Therefore, the soldering part is integrally covered with the cured resin, the strand end is buried in the resin, and it is safe to touch directly with your fingers, and the cured thermosetting polyurethane or epoxy resin has a mechanical strength, Weatherability,
Since it has excellent durability, it can withstand harsh work as a rope with a stand. Furthermore, it is shaped like a grip so that it is easier to grip, so workability is good. The grip-shaped molding can be formed into various shapes depending on the application.

[0009]

EXAMPLES The present invention will be specifically described below with reference to examples. As shown in FIG. 2, a wire rope having a diameter of 12 mm (JIS No. 4) was subjected to ice-price processing as shown in FIG. The total length of the wire rope after the ice-price processing on both sides was 970 mm, the distance between the two heap insertion portions was 50 mm, the length of the eyelid insertion portion was 170 mm each, and the strand was wound four times. . After removing dirt, oils, and the like from the saucer, it was dried, covered, and a casting mold with a split length of 20 was attached to each saucer. As a casting resin, a two-component polyurethane (trade name: Quinnate, manufactured by Nippon Zeon Co., Ltd.) consisting of urethane prepolymer-polyester polyol was used, and after thoroughly mixing, casting was performed using a shot gun, Was heated to accelerate curing. If it takes a long time, it can be cured at room temperature. After curing, the mold was removed and subjected to a strength test. The dimension of the resin coating portion of the groove portion is 80 mm in length between the collar portions 5 (both ends of the grip 4 in FIG. 1) at both ends, and the diameter of the collar portion of the grip portion in FIG.
mm, the diameter of the body was 30 mm.

(1) Tensile test It was carried out using a tensile tester. In the first test body manufactured by the same method as above, the load of 6500 kg and the load of 6370 kg in the second test body caused the wire rope to break at the flange end, respectively, and at the same time, the resin coating portion cracked. . That is, none of the covering grips 4 cracked until the rope broke. (2) Shear test As shown in FIG. 3, a jig 7 having a groove-shaped notch with a width of 19 mm and a U-shaped tip was prepared, and this was inserted into a wire between the both ends of the hammer, and the lower resin encapsulation was performed. Covered part 5 (diameter 18m
m), and a downward load was applied to the jig 6. 840
Up to a load of kg, slippage on the encapsulating resin did not occur. (3) Compression test A compression test was carried out by sandwiching the body portion 6 of the encapsulated resin between the upper and lower metal plates. The diameter of the body before compression was 30.1 mm.
With a load of 2TON, the diameter in the compression direction was compressed to 28.7mm, the diameter in the transverse direction was 31.0mm, and in 3TON, the diameter in the compression direction was 26.7mm, and the diameter in the lateral direction was 32.7mm. Did not happen. 6TO for another test body
With a load of N, the compression direction is 24.4 mm and the lateral direction is 35.5 mm.
However, cracking did not occur. Diameter 2 for comparison
The result of the test using a 6.6 mm, 57 mm long aluminum clamp tube-coated product is that the compression direction is 27.1 mm at 2 TON, the transverse direction is 26.6 mm, the up and down direction is 27.0 mm at 3 TON, and the horizontal direction is 26.8 mm. , 6TO
N was 26.6 mm in the vertical direction and 27.3 mm in the horizontal direction. As a result, the resin coating of the present invention can withstand compression, much like an aluminum clamp tube. From the above-mentioned test results, it was shown that the Satsuma insertion covering part according to the present invention has sufficient strength and can sufficiently cope with severe working conditions on site. Further, during the test, the wire strands do not protrude from the resin-encapsulated part at all, and therefore the safety is sufficiently ensured.

[0011]

According to the present invention, the eye-worked portion and the connection portion of the wire rope are superior in mechanical strength as compared with the conventional coating method and can withstand harsh field use conditions, resulting in a danger during work. It has good workability and is suitable for long-term use.
Furthermore, the work of encapsulating with thermosetting resin has the advantage that it can be installed on site and does not require special equipment.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a wire rope in which an eye-processed portion is covered with resin.

FIG. 2 is a front view of a resin-coated wire rope used in a tensile test.

FIG. 3 is an explanatory diagram showing a shear test method for a grip portion.

[Explanation of symbols]

 1 Wire rope 2 Ice price 3 Sasama insertion part 4 Grip 5 Collar part 6 Body part 7 Jig

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F16G 11/00

Claims (4)

[Claims] 1. A wire rope, characterized in that the grooved portion is integrally covered with a thermosetting synthetic resin. 2. The wire rope according to claim 1, wherein the grooved portion is an ice price portion. 3. The wire rope according to claim 1, wherein the grooved portion is a short splice portion to which a wire rope is connected. 4. A wire rope hoop inserter, characterized in that a casting mold is attached by encasing the Satsuma processing part, a thermosetting resin for casting is cast into the mold, and the mold is removed after curing. Part encapsulation method.