JPH0429164B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to an elevator cable, and more particularly to a flat elevator cable for supplying power to a moving machine such as an elevator. [Problems to be solved by the conventional technology and the invention] Elevator cables have traditionally used round cables, but these round cables are prone to bending vibrations due to external forces from all angles. As elevators become faster, damage accidents due to contact with surrounding structures are becoming more common. Because the cage frequently moves up and down at high speed in such a narrow hoistway, elevator cables must have sufficient bendability and flexibility. A material with excellent torsion resistance that does not cause twisting is required. [Means for Solving the Problems] The object of the present invention is to solve the above-mentioned drawbacks of the conventional round elevator cable, and to create a flat elevator cable that has stable running performance, excellent front-to-back alignment, and improved field workability. Located in providing elevator cables. The flat elevator cable according to the present invention has a plurality of twisted wire cores arranged in an odd number parallel to each other, and these wire core bundles are collectively covered with a highly flexible material. A flat elevator cable consisting of a sheath and a sheath, which is constructed so that the direction of the core remains unchanged when the flat cable is viewed from either the left or right side, that is, when seen through. It is something. [Function] Therefore, a flat elevator cable whose elevator car frequently moves up and down at high speed in a narrow hoistway has a bending curve in which the cable curves into a U-shape as the cable moves up and down. parts move sequentially along its length, and the cable undergoes continuous bending throughout its length;
It has sufficient bending flexibility even if this bending is repeated frequently, and has twist resistance that can prevent bending and vibration caused by external forces from any angle. The flat elevator cable of the present invention is constructed by arranging an odd number of twisted wire core bundles symmetrically on both the left and right sides of the core bundle at the center position, so it has the ability to be reversed from the inside out, and the cable during installation. Since there is no need to worry about the direction of the cable, handling of the cable at the site becomes extremely easy. Also, if the arrangement of the core bundles of this flat elevator cable does not match on the front and back sides of the cable, if there is an even number of core bundles, the twist direction will become Z-S-Z-S-Z-S. , S-Z-S-Z-S-Z, which may cause unbalance when suspending the cable at the cable end, but the flat elevator cable of the present invention prevents such problems. This does not occur, and the behavior of the cable is stabilized, and running stability at high speeds is achieved. [Example] An example of the flat elevator cable of the present invention will be described based on FIGS. 1 and 2. First, FIG. 2 shows an example of a wire core bundle used in the flat elevator cable of the present invention.
A wire core 1 covered with an insulating material 2 such as soft vinyl
A wire core bundle is formed by twisting the wires 1, 12, . As shown in FIGS. 1A and 1B, the wire core bundles are arranged substantially parallel to each other on one plane, as shown by reference numerals 21, 22, . . . , 25, and the rubber Alternatively, it may be covered all together with a highly flexible insulating material 6 such as plastic to form a sheath 30 to constitute a flat elevator cable. On this sheath 30, cutout grooves 31 and 32 are provided as necessary so as to extend in the length direction of the entire cable, and by opening the cutout grooves 31 and 32, it is possible to easily divide and wire the wire core bundle groups. It is configured so that it can be done. In this flat elevator cable, the wire core bundles 21 and 25 are formed from a left-handed wire core bundle Z, and the wire core bundles 22, 23, and 24 are formed from a right-handed wire core bundle S, and the center position is A right twisted wire core bundle 23 is arranged on the cable extension line, and the wire core bundles 21, 22, 24,
25 are arranged, and therefore, the twisting direction of the core bundle is in the arrangement configuration of Z-S-S-S-Z. FIG. 3 shows a reference example of a flat elevator cable having a core structure similar to that shown in FIG. 1 and having an even number of core bundles 21, 22, . . . , 26. In this example, the same members are given the same reference numerals, and detailed explanation thereof will be omitted. In this case, since the core bundles 21, 22, ..., 26 are arranged symmetrically from side to side (up and down in the figure) around the center position X, the direction of twist of the core bundles is, for example, as shown in Figure 3. The wire core bundle 22,2
In 3 and 25, the left-aligned wire core bundle S, wire core bundle 2
1, 24, and 26 consist of a right-handed twisted wire core bundle Z, so the twist direction of this cable is Z-
It has an S-S-Z-S-Z arrangement. Next, Table 1 below shows a comparison between the flat elevator cable of the present invention and the flat elevator cable of the reference example.

[Table] As can be seen in Table 1 above, although flat elevator cables are superior to flat elevator cables in terms of twist angle, flat cables are better than flat elevator cables in terms of front-to-back consistency. is also inferior. However, although the flat cable is slightly inferior in this twist angle, there is no significant difference in its absolute value, and moreover, it is comparable to the flat elevator cable in terms of running stability. In addition, flat elevator cables are superior to flat elevator cables in terms of handling of cables on-site, since there is no need to worry about the direction of the cable during installation. In other words, in the case of a flat cable, if the front and back sides of the cable do not match, the core bundles 21 and 2
2,...,26 is arranged so that the direction of the core bundle is Z-
Becoming S-Z-S-Z-S, S-Z-S-Z
-S-Z, so if an imbalance occurs in the suspension of the cable at the end of the flat elevator cable, the behavior of the flat elevator cable will not always be the same. . On the other hand, in the case of flat elevator cables, the twist direction of the core bundle is always Z-S-S-S-Z, regardless of whether it is turned inside out or reversed. You can be completely indifferent to the direction of the cable. As another embodiment of the above flat elevator cable of the present invention, wire core bundles 21, 22,
. . , 25 is 5, but the same effect can be obtained even if the number of core bundles is an odd number such as 3, 7, 9, . In addition, wire core bundles 21 and 2 are included in this flat cable.
Even if components other than 2, . Furthermore, although the wire core bundles 21, 22, ..., 25 in Fig. 1 are all made of the same material and the same size, even if they are made of different materials and different sizes, , it is clear that the same effect can be obtained as long as the number of core bundles is an odd number, provided that symmetry is maintained in the left-right direction with respect to the center position X. [Effects of the Invention] Since the flat elevator cable of the present invention is configured as described above, it can prevent the drawbacks of the round elevator cable, which is prone to bending and vibration due to external forces from any angle, and In addition to maintaining the stability of the behavior of the flat elevator cable, the twist direction and odd number arrangement of the core bundles provide consistency between the front and back, making it possible to further improve the efficiency of on-site work.

[Brief explanation of drawings]

Figures 1A and B are a cross-sectional view showing one embodiment of the flat elevator cable of the present invention and a plan view showing a portion thereof, and Figure 2 is a plan view showing a part of the flat elevator cable used in the flat elevator cable shown in Figure 1 above. FIGS. 3A and 3B are an enlarged cross-sectional view of the wire core bundle, and are a cross-sectional view and a plan view of a portion thereof of a flat elevator cable showing a reference example. 1... wire core, 21, 22, 23, 24, 25...
...Line core bundle, X...center position.

Claims (1)

[Scope of Claims] 1. An odd number of wire core bundles consisting of a plurality of twisted wire cores are arranged substantially in parallel on one plane, and the wire core bundles are bundled with a highly flexible material. In a coated flat elevator cable with a flat cross section, one of the odd-numbered core bundles is arranged at the center position in the cable width direction, and the remaining core bundles are arranged at the center position. The same number of wires are placed on each side of the bundle on the left and right, and the twisting directions of the adjacent wires are different, and the positions and twisting directions of the core bundles placed on the left and right sides are centered on the core bundle placed in the center position. A flat elevator cable characterized by being configured to be left and right symmetrical.