JPS61183086A - Wire rope for slinging work - 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] (Industrial application field) The present invention relates to a wire rope for slinging.

(Prior art) Rope breakage accidents occur when slinging cranes, etc., occur when the handler misjudges the diameter of the wire rope for slinging and does not use a rope with a diameter that matches the weight of the suspended load. There is.

The following causes of accidents during work with these types of slings:

■) I measured the diameter of the wire rope every day before using it, but it was a hassle, so I had to measure it by eye.

2) The diameter of the rope is marked with enamel paint etc. at the compression stop point to make the rope ring, but this marking rubs off, peels off, and disappears in a short period of time, so it is difficult to choose the correct rope. To avoid failure.

3) Compression stop points are painted and divided by rope diameter in different colors, but users have a hard time memorizing each color and end up using inappropriate ropes.

(Problems to be Solved by the Invention) The extremely dangerous rope display of the prior art as described above is always correctly displayed, and a sling with a safe rope diameter display that does not disappear due to friction etc. is useful. It is an attempt to provide a rope.

(Measures to solve the problem) Mark the diameter value in a concave (or convex shape) at the compression stop point of the rope.
It is characterized by a structure in which it is easy to see from any angle and from a distance, and the display is difficult to disappear by displaying the display in multiple locations on the display and by color-painting the concave or convex display portion. .

(Example) In FIG. 1, the sling is a rope, and a ring-shaped part 3 is formed at the end of the rope l by a compression fitting 2. As shown in the perspective view of FIG. 2, the metal fitting 2 is made of a cylindrical body made of aluminum alloy, which is compressed by a press to form a ring-shaped part 3. The diameter of the rope is displayed at three locations such as <16 m/m or 20 m/m (see reference numeral 4 in Fig. 1), so that the rope diameter can be confirmed at any position within 360 degrees. This display is press-molded and the letters are engraved in a concave or convex shape. The concave or convex display section is then painted in color so that it can be clearly seen even from a distance. In this case, it is preferable to use fluorescent paint because it can be easily identified even in dimly lit places.

Although the diameter of the rope (16 m/m in the figure) is displayed in the axial direction of the cylinder, it may also be displayed in the circumferential direction, and in any case, the one that is easier to see should be selected depending on its size and length. do.

(Effects of the Invention) (a) The present invention displays the rope diameter when locking the wire rope for slinging as described above, so that not only users but also manufacturers and dealers can easily judge the rope diameter. Can be shipped and sold.

(b) Article 215 of the Crane Regulations based on the Safety and Health Act prohibits the use of wire ropes whose diameter has decreased by 7%, but the display of the diameter, which never disappears, makes it easier to judge when to discard it.

In addition, in the past, because the display was unknown, the operator selected the rope by register, and by chance, the rope was selected incorrectly than the required size, and a rope with a smaller diameter than the required diameter was selected and used, and according to this rule, it is good even if the diameter is reduced by 7%. Although there have been some accidents caused by wire ropes being cut when used as wire ropes, such dangerous accidents can be prevented by using wire ropes with strict markings as in the present invention.

(c) The illuminance at work sites is generally low, but if the display method of the present invention, especially fluorescent paint display, is used, misreading accidents will be further reduced and safety will be improved.

(d) Incidentally, wire ropes for slinging have traditionally been made using the saury weave method (see reference numeral 5 in Figure 3), but due to the decrease in the number of specialized technicians, the removal of snaps from the saury weave was an accident, and the skin on the hands was exposed to the saury weave. This saury braided rope is disliked due to damage caused by the damage and radioactive contamination from this damage, and is gradually being replaced by ``compression-stopped'' ropes. Therefore, the slinging rope according to the present invention becomes even more effective.

[Brief explanation of the drawing]

Figure 1 is a front view of the compression stop part of the rope for the sling. FIG. 2 is a perspective view of the compression fitting. Figure 3 is a perspective view of the sling rope used in the conventional saury knitting method. In the diagram; 1 rope 2 metal fitting 3 ring-shaped part 4 diameter indication 5 saury knitting part and above

Claims (1)

[Claims] Numerical values indicating the diameter of the wire rope are engraved in multiple concave or convex shapes on the circumference of the metal fitting on the outer surface of the compression fitting used to form the ring-shaped part, and the engraved parts are painted in color. A wire rope for slinging that is characterized by: