JPH0614442A - Prevention method of undulation of flat cable - Google Patents

Abstract

PURPOSE:To prevent the undulations of a flat cable by providing a plurality of rollers to the bottom of an inclined cable rack, and dropping the flat cable on the rollers to use. CONSTITUTION:When a flat cable 1a wound on a cable reel 2 is dropped in a cable rack 3 extended lengthwise to use, the cable rack 3 is inclined lengthwise thereof and, at the same time, a plurality of rollers 4 arranged lengthwise at specific intervals are provided to the bottom of the rack 3. The flat cable 1a is dropped on the rollers 4 to use. For that purpose, when the flat cable 1a is dropped on the rack 3, tensile force is applied to overall length of the cable 1a by dead weight of the cable 1a. According to the constitution, the undulations of the flat cable can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing waviness of a flat cable.

[0002]

2. Description of the Related Art A flat cable, such as a cabtire cable, is used by dropping it on a cable rack when moving a crane or the like, or conversely being wound around a cable reel on the crane when the crane moves. There is.

[0003]

According to the above-mentioned conventional technique, the flat cable is dropped on the cable rack or wound around the cable reel, and the twisting of the cable conductors is repeated as the conductors are twisted. to reason, the tension of the plurality conductors become unbalanced, when crowded dropped especially and along the cable on the rack, or become waviness (seaweed shape flat cable 1 as shown in FIG. 2, standing 90 ⁰ May occur.

The present invention has been made in view of the above points, and an object of the present invention is to provide a method of using a flat cable capable of preventing undulation.

[0005]

The object is to incline the cable rack in its longitudinal direction, and to provide a plurality of rotating rollers arranged at predetermined intervals in the longitudinal direction on the bottom of the rack, on which the roller is mounted. This is achieved by dropping the flat cable for use.

[0006]

Since the above means is provided, when the flat cable is dropped on the rack, tension is applied to the entire length of the cable due to its own weight.

[0007]

EXAMPLES Next, the present invention will be specifically described by way of examples.

[Embodiment 1] FIG. 1 shows an embodiment of the present invention. It should be noted that the same parts as those of the related art are designated by the same reference numerals and the description thereof will be omitted. When the flat cable 1a wound around the cable reel 2 is dropped and used in the cable rack 3 extending in the longitudinal direction, in the present embodiment, the cable rack 3 is tilted in the longitudinal direction, and at the bottom of the rack 3. A plurality of rotating rollers 4 arranged at predetermined intervals in the longitudinal direction were provided, and the flat cable 1a was dropped on the rollers 4 for use. In this way, when the flat cable 1a is dropped on the slanted rack 3, tension is applied to the flat cable 1a over its entire length due to its own weight, and the occurrence of waviness in the flat cable 1a is prevented. be able to.

The figure shows a situation in which the flat cable 1a is dropped from the cable reel 2 onto the cable rack 3 while the crane body 5 is moving. In this embodiment, the cable rack 3 is tilted (conventionally horizontal). Further, the rotary roller 4 is installed at the bottom of the rack, and when the cable 1a rides, the cable 1a tends to slide down in the inclined direction, so that tension is applied to the entire length of the cable 1a. As described above, since the cable 1a on the rack 3 is always under tension, even if the cable 1a is twisted, the cable 1a is normally restored by the tension.

The inclination angle must be determined in consideration of the weight of the cable itself and the strength of the cable rigidity.
In addition, the bottom of the cable rack (the portion on which the cable rides) must be roller-shaped so that the weight of the cable is distributed over the entire length so that friction does not occur between the cable and the bottom.

[0011]

As described above, according to the present invention, the cable rack is tilted in the longitudinal direction thereof, and a plurality of rotating rollers arranged at predetermined intervals in the longitudinal direction are provided on the bottom of the rack, and on the rollers, Since the flat cable is used by dropping it, when the flat cable is dropped on the rack, tension is applied to the entire length of the cable due to the weight of the cable, and it is possible to prevent waviness from occurring in the flat cable. it can.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (a) is an explanatory view showing a state in which a flat cable is dropped on a cable rack, and (b) is a perspective view of the cable rack.

FIG. 2 is an explanatory view showing a state in which a conventional flat cable is wavy.

[Explanation of symbols]

 1a Flat cable 2 Cable reel 3 Cable rack 4 Rotating roller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Shibata 5-1-1 Hidaka-cho, Hitachi City, Ibaraki Prefecture Hitachi Cable Ltd. Hidaka Plant (72) Inventor Michiaki Shimizu Hidaka-cho, Ibaraki Prefecture 5-1-1 Hitachi Cable Co., Ltd. Hidaka Plant (72) Inventor Katsuhisa Shishido 5-1-1 Hidakacho, Hitachi City, Ibaraki Hitachi Cable Co., Ltd. Hidaka Plant (72) Inventor Junko Higashiyashiki 5-1, 1-1 Hidaka-cho, Hitachi-shi, Ibaraki Hitachi Cable Co., Ltd. Hidaka factory

Claims (1)

[Claims] 1. When the flat cable wound around a cable reel is dropped and used in a cable rack extending in the longitudinal direction, the flat cable tilts the cable rack in the longitudinal direction and the flat cable is A method for preventing waviness of a flat cable, characterized in that a plurality of rotating rollers arranged at predetermined intervals in the longitudinal direction are provided on the bottom, and the flat cable is dropped on the roller for use.