Crane information presentation system

Patent metadata

Field	Value
Publication number	US-10633225-B2
Application number	US-201615562188-A
Country	US
Kind code	B2
Filing date	Mar 30, 2016
Priority date	Apr 1, 2015
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

An information presentation system includes: an overload preventing device that derives a load factor which is an index of a load applied to a rope; a data logger that accumulates data on the load factor derived by the overload preventing device and data on a time length for which a load corresponding to the derived load factor has been applied to the rope, the data on the load factor and the data on the time length being associated with one another, and generates lifting rope statistical information and raising rope statistical information indicating a relationship between the load factor and the cumulative time for each rope; and a presenting unit that presents the lifting rope statistical information and the raising rope statistical information generated by the data logger.

First claim

The invention claimed is:

1. A crane information presentation system that presents information on a wire rope of a crane including a winch for winding and unwinding the wire rope to lift and lower an object, the system comprising:
a load sensor that detects a load applied to the wire rope;
a load index deriving unit that derives, based on the load detected by the load sensor at a predetermined cycle, a load index which is an index of the load;
an information processing device that acquires the load index at the predetermined cycle to generate statistical information indicating a relationship between a cumulative time and the load index, the cumulative time being a time for which a load corresponding to the load index has been applied to the wire rope;
a presenting unit that presents the statistical information generated by the information processing device; and
a wound-out length index deriving unit that derives at the predetermined cycle a wound-out length index which is an index of a length of the wire rope wound out from the winch,
wherein the information processing device acquires at the predetermined cycle the load index and the wound-out length index to generate, as the statistical information, load and wound-out-length statistical information indicating a relationship among the cumulative time, the load index, and the wound-out length index, the cumulative time for which the load corresponding to the load index has been applied to the wire rope wound out by a length corresponding to the wound-out length index, and
wherein the presenting unit presents the load and wound-out-length statistical information generated by the information processing device.

2. The crane information presentation system according to claim 1 , wherein
the information processing device classifies the load index and the wound-out length index each into a plurality of sections, calculates the cumulative time for each sections, and generates, as the load and wound-out-length statistical information, cumulative time distribution data indicating distribution of respective cumulative times of the sections.

3. The crane information presentation system according to claim 2 , wherein
the presenting unit includes a display unit that displays distribution of the cumulative times of the sections indicated by the cumulative time distribution data generated by the information processing device.

4. The crane information presentation system according to claim 1 , wherein
the wound-out length index deriving unit derives, as the wound-out length index, a residual wound amount which is a length of the wire rope wound around the winch.

5. The crane information presentation system according to claim 1 , further comprising a rotation amount sensor that detects a rotation amount of a drum around which the wire rope is wound,
wherein the wound-out length index deriving unit derives the wound-out length index, at the predetermined cycle, based on the rotation amount detected by the rotation amount sensor.

6. The crane information presentation system according to claim 2 , wherein
the wound-out length index deriving unit derives, as the wound-out length index, a residual wound amount which is a length of the wire rope wound around the winch.

7. The crane information presentation system according to claim 3 , wherein
the wound-out length index deriving unit derives, as the wound-out length index, a residual wound amount which is a length of the wire rope wound around the winch.

Assignees

• Kobelco Constr Mach Co Ltd

Inventors

• Hirate Takayoshi
• Miya Eiji
• Fukumoto Keisuke
• Nakazawa Toru

Classifications

• B66C13/16 Primary

  Applications of indicating, registering, or weighing devices (in crane hooks B66C1/40; in safety gear B66C15/00; weighing-apparatus G01G; remote indicating in general G08) · CPC title

• G07C5/0825

  using optical means · CPC title

• B66C15/00

  Safety gear (for rope, cable, or chain winding mechanisms B66D1/54) · CPC title

• B66C15/065

  electrical · CPC title

• B66C13/00

  Other constructional features or details · CPC title