JP2002327380A - Wire rope for opening and closing operation of smoke- emitting and ventilating window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more improve winding and unwinding performances from a winding drum in a wire rope for opening and closing operations of smoke-emitting and ventilating windows and more improve durability by bending and extending in a state stretched over a pulley. SOLUTION: This wire rope 1 for operating and closing operation of the smoke-emitting and ventilating windows is obtained by adopting a stranded rope of a type of 19+8×7 in which the whole outside diameter is 1.6-1.8 mm and wires of a core strand 2 and side strands 3 are stainless steel wires having 0.14-0.20 mm diameter with 19 number of the wires in the core strand 2, 8 number of the side strands 3 around the core strand 2 and 7 number of the wires in the respective side strands 3 is adopted as the wire rope 1 for the opening and closing operations of the smoke emitting and ventilating windows formed by laying a plurality of the side strands 3 comprising a plurality of the laid wires around the core strand 2 comprising a plurality of the laid wires.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rope used for opening and closing a window provided at a high place for exhausting smoke and ventilation.

[0002]

2. Description of the Related Art In buildings and factories, smoke exhaust and ventilation windows are often provided at high places such as near ceilings as shown in FIG.

[0003] Conventionally, the opening and closing of the smoke exhaust / ventilation window is performed as shown in FIG.
As shown in the figure, a wire rope is used. That is,
The wire rope 1 is wound around a pulley pulley 6 attached to the window 4 and the window frame 5, and is wound or unwound on a winding drum manually or electrically.

Therefore, the wire rope used for opening and closing the smoke exhaust / ventilation window is required to have durability by being bent and stretched while being stretched over the pulley pulley 6.

[0005] Further, when the wire ropes are caught between the wire ropes when they are wound on the winding drum, that is, when the wire ropes are not arranged in order and wound on the winding drum, the wire ropes may not be wound. It interferes with feeding. For this reason, the wire rope used for opening and closing the smoke exhaust / ventilation window must be good in winding and rewinding.

According to the present invention, in a wire rope for opening / closing a smoke exhaust / ventilation window, winding and rewinding performance on a winding drum is improved, and durability is obtained by bending and stretching the wire rope while being stretched over a pulley pulley. It is an object to further improve.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a side strand in which a plurality of strands are twisted around a core strand in which a plurality of strands are twisted, As a smoke exhaust / ventilation window opening / closing operation wire rope formed by twisting a plurality of strands, the overall outer diameter is 1.6 to 1.8.
mm, the strands of the core strand and the side strands are stainless steel wires having a diameter of 0.14 to 0.20 mm,
A 19 + 8 × 7 type, in which the number of strands of the core strand is 19, the number of side strands around the core strand is 8, and the number of strands of each side strand is 7, is used.

[0008] That is, the wire rope having the above-described structure has better winding and rewinding performance on a winding drum than wire ropes of other structures, and is formed by bending and stretching while being wound around a pulley pulley. It has been confirmed by the present inventors that the durability is extremely excellent.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a wire rope 1 for opening and closing a smoke exhaust / ventilating window according to the present invention has 19 core strands and 19 strands around the core strands. And the number of strands of each side strand 3 is 7, and there are 19 + 8 × 7 type strand ropes.

[0010] The overall outer diameter of the strand rope is 1.6 to 1.8 mm. The strands of the core strand 2 and the side strands 3 are 0.14 to 0.20.
mm stainless steel wire (SUS304).

The wire rope having the above structure, that is, 19 + 8
× 7 type strand rope with overall outer diameter of 1.6 ~
1.8 mm, the strand of the core strand 2 and the side strand 3 has a diameter of 0.14 to 0.20 mm.
It was confirmed that S304) exhibited particularly excellent suitability as a wire rope for smoke exhaust / ventilation window opening / closing operation among various wire ropes using stainless steel wire (SUS304).

The results of an aptitude test as a wire rope for opening and closing a smoke exhaust / ventilating window are as shown in Table 1.

[0013]

[Table 1]

The breaking strength shown in Table 1 is obtained by measuring the load until the wire rope 1 of each sample breaks in a straight line using an Amsler load tester. The wire rope 1 needs to have a breaking strength of at least 2350 N or more. Therefore, in Table 1, those having a breaking strength of 2350 N or more are marked with a circle, and those with a breaking strength of 2350 N or less are marked with a cross.

The deterioration rates shown in Table 1 are as shown in FIG.
With two pulleys 6 of φ26 mm, the wire rope 1 of each sample is bent at an angle of 90 degrees at the pulley 6 portion, and the wire rope 1 of each sample is broken using an Amsler load tester until it breaks. The value obtained by measuring the load of the sample shows how much the deterioration is caused by the load measured until the wire rope 1 of each sample is broken in a straight line. Since the wire rope 1 is used in a state of being wound around a small-diameter pulley 6, those having a deterioration rate within 15% are marked with a circle and those exceeding 15% are marked with a cross. .

As shown in FIG. 4, the bending durability performance shown in Table 1 was as follows.
m, and bends and stretches repeatedly while applying a load of 3 to 40 kgf to the wire rope 1.
Indicates the number of times until the wire is broken. A circle having a frequency of 70% or more was marked with a circle, and a circle having a frequency of 7,000 times or less was marked with a cross.

As shown in FIG. 5, the load efficiency shown in Table 1 was obtained by connecting the wire rope 1 of each sample having a length of 1500 mm to two wires.
After passing through the outer casing 7 of 00R and attaching a 180 ° bending load Wkg, the tensile force Pkg is measured.
Those within are marked with x. Load efficiency (%) = (W / P) × 100

From the test results in Table 1, in each test, it was confirmed that only the wire rope according to the present invention was marked with a circle.

[0019]

As described above, the wire rope according to the present invention shows particularly excellent suitability as a wire rope for opening and closing smoke exhaust and ventilation windows.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a usage state of a wire rope for opening and closing a smoke exhaust / ventilation window.

FIG. 2 is a sectional configuration diagram of a wire rope for opening / closing a smoke exhaust / ventilating window according to the present invention.

FIG. 3 is a schematic view showing a method of a deterioration rate test.

FIG. 4 is a schematic view showing a method of a bending durability test.

FIG. 5 is a schematic view showing a method of a load efficiency test.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wire rope 2 core strand 3 side strand 4 window 5 window frame 6 pulley 7 outer casing

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takeshi Takemoto 68, Kamioshida, Narumi-cho, Midori-ku, Nagoya-shi Chuo-Hatsujo Co., Ltd. F-term (reference) 3B153 AA14 BB20 CC53 FF01 GG05 GG40

Claims (2)

[Claims] A wire rope for opening and closing a smoke exhaust / ventilation window formed by twisting a plurality of side strands formed by twisting a plurality of strands around a core strand formed by twisting a plurality of strands. , The overall outer diameter is 1.6 to 1.8 m
m, the strands of the core strand and the side strands are 0.
A stainless wire having a diameter of 14 to 0.20 mm, the number of strands of the core strand is 19, the number of side strands around the core strand is 8, and the number of strands of each side strand is 7
Smoke exhaust characterized by 19 + 8 × 7 type of book
Wire rope for opening and closing ventilation windows. 2. The wire rope according to claim 1, wherein the stainless steel material is SUS304.