Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Atsushi Mitsui

Michio Murai

Yoshinori Miyamoto

Atsushi Funada

Hiroshi Kigawa

Takashi Yoshioka

Rikio Kondo

Eiji Ando

Yoshikatsu Hayashi

Muneaki Mukuda

Mamoru Terai

Takenobu Honda

Hiroyuki Nakagawa

Masahiko Hida

Shinya Naito

Toyohiro Noguchi

Koei Matsukawa

In an elevator rope, an inner layer rope includes a fiber core that includes a. bundle of fibers; a plurality of inner layer rope strands that each include a plurality of steel wires are disposed around an outer circumference of the fiber core; and a resin inner layer rope coating body that is coated around an outer circumference of the fiber core and a layer of the inner layer rope strands. A plurality of outer layer strands each including a plurality of steel wires are disposed around an outer circumference of the inner layer rope coating body.

Elevator rope and a manufacturing method therefor

In an elevator rope, an inner layer rope has: an inner layer rope fiber core; a plurality of inner layer strands; and a resin inner layer rope coating body that is coated onto an outer circumference. Inner layer strands are twisted together on an outer circumference of the inner layer rope fiber core. The inner layer strands have: an inner layer strand fiber core that is disposed centrally; and a plurality of steel inner layer strand wires that are twisted together on an outer circumference of the inner layer strand fiber core. In addition, a plurality of steel outer layer strands are twisted together on an outer circumference of the inner layer rope.

Elevator rope and elevator apparatus that uses same

In an elevator rope, an inner layer rope includes: a plurality of steel inner layer strands; and a resin inner layer rope coating body that is coated onto an outer circumference. A plurality of outer layer strands are twisted together on an outer circumference of the inner layer rope. The outer layer strands each include: an outer layer strand fiber core; and a plurality of steel wires that are twisted together on an outer circumference of the outer layer strand fiber core.

In an elevator rope, a plurality of steel outer layer strands are twisted together on an outer circumference of an inner layer rope. The inner layer rope has: a fiber core; a plurality of steel inner layer strands that are twisted together directly onto an outer circumference of the fiber core; and a resin inner layer rope coating body that is coated onto the outer circumference. A diameter of the inner layer strands is smaller than a diameter of the outer layer strands. The inner layer strands are greater in number than the outer layer strands.

Elevator rope

A wire rope flaw detector that is capable of accommodating a plurality of wire rope diameters and is inexpensive includes at least two magnetic sensor units that are integrated with a magnetizer and include planer coils placed opposite to each other with a magnetic circuit generated by the magnetizer in between, in the direction almost parallel to the magnetic circuit in a predetermined section of a wire rope. The detector further includes an adjuster capable of changing the distance between the at least two magnetic sensor units depending on the diameter of the wire rope.

Wire rope flaw detector

An elevator rope including a rope main body; and a covering resin layer that covers the periphery of the rope main body and comprises a molded product of a composition which composition is produced by mixing a thermoplastic polyurethane elastomer, a thermoplastic resin other than the thermoplastic polyurethane elastomer and an isocyanate compound having two or more isocyanate groups per molecule; a rope main body impregnated with an impregnating solution comprising a hydroxy compound having two or more hydroxy groups per molecule and an isocyanate compound having two or more isocyanate groups per molecule and having a lower viscosity than a melt viscosity of the composition for forming the covering resin layer is used as the rope main body; the elevator rope has a stable friction coefficient that does not depend on temperature or sliding velocity.

In an elevator apparatus, a main rope suspending a car and a balance weight is looped around a traction sheave and a driven sheave of a traction machine. A driving-side speed detecting portion for detecting rotational speed of the traction sheave and a driven-side speed detecting portion for detecting rotational speed of the driven sheave are electrically connected to an operation control device. The operation control device includes a determination portion determining presence or absence of an abnormality in an elevator by calculating speed difference between rotational speeds of the traction sheave and comparing the speed difference to a fixed reference value, set in advance, and a control portion for controlling the operation of the elevator based on information from the determination portion.

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Tokyo, Japan

Atsushi Mitsui