Crane and information display method

Patent metadata

Field	Value
Publication number	US-11155448-B2
Application number	US-201916977376-A
Country	US
Kind code	B2
Filing date	Mar 8, 2019
Priority date	Mar 9, 2018
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

There is provided a crane for enabling easily carrying out an operation of a boom such as raising and lowering, telescoping, or turning, by displaying a range wherein a hook may be moved or may not be moved in a direction approaching a vehicle part of the crane. The crane includes: a vehicle; a boom positioned upon the vehicle; a wire rope being suspended from a base end side of the boom toward a leading end side thereof; a hook being hung from the leading end side of the boom and raised and lowered by winding and unwinding the wire rope; a camera for photographing an image including the hook; a display device for displaying the image; and a control device connected to the camera and the display device, the control device being for processing information. On the basis of the length of the boom or the height of the hook, the control device computes an inner boundary which is a boundary between a range where the hook may move, and a range where the hook may not move, in a direction approaching the vehicle. The display device displays an image wherein images indicating the inner boundary are superimposed on the image photographed with the camera.

First claim

The invention claimed is:

1. A crane comprising:
a vehicle;
a boom disposed on the vehicle;
a wire rope spanning from a base end side to a distal end side of the boom;
a hook hanging from the distal end side of the boom and ascending and descending by feeding in and feeding out the wire rope;
a camera that takes an image including the hook;
a control apparatus connected to the camera and the display apparatus and configured to process information, the control apparatus calculates an inner boundary based on a length of the boom or a height of the hook, the inner boundary being a boundary between a movable range and a non-movable range in a direction in which the hook approaches the vehicle; and
a display apparatus that displays an image in which an image indicating the inner boundary is superimposed on the image taken by the camera.

2. The crane according to claim 1 , wherein
the movable range is a range in which the boom is movable after being luffed up with the length of the boom maintained.

3. The crane according to claim 1 , wherein
the movable range is a range in which the boom is movable after being luffed up and/or swiveled with the height of the hook maintained.

4. The crane according to claim 1 , wherein
when the vehicle is positioned outside the image taken by the camera, the display apparatus displays an image in which an image indicating a direction in which the vehicle is positioned is superimposed on the image taken by the camera.

5. The crane according to claim 1 , wherein
the control apparatus calculates a swivel boundary which is a boundary between a swivelable range and a non-swivelable range of the boom,
the display apparatus displays an image in which an image indicating the swivel boundary is superimposed on the image taken by the camera.

6. An information display method performed in a crane, the crane comprising:
a vehicle;
a boom disposed on the vehicle;
a wire rope spanning from a base end side to a distal end side of the boom;
a hook hanging from the distal end side of the boom and ascending and descending by feeding in and feeding out the wire rope;
a camera that takes an image including the hook;
a display apparatus that displays the image; and
a control apparatus connected to the camera and configured to process information,
the method comprising:
calculating by the control apparatus an inner boundary based on a length of the boom or a height of the hook, the inner boundary being a boundary between a movable range and a non-movable range in a direction in which the hook approaches the vehicle; and
displaying by the display apparatus, an image in which an image indicating the inner boundary is superimposed on the image taken by the camera.

Assignees

• Tadano Ltd

Inventors

• Hayashi Hiroyuki

Classifications

• G06T7/62

  of area, perimeter, diameter or volume · CPC title

• B66C13/16

  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

• B66C23/90 Primary

  Devices for indicating or limiting lifting moment · CPC title

• H04N7/183

  for receiving images from a single remote source · CPC title

• B66C23/88

  Safety gear (for cranes in general B66C15/00; for rope, cable, or chain winding mechanisms B66D1/54) · CPC title