Tadano Ltd.

Keisuke Tamaki

Iwao Ishikawa

Hiroshi Yamauchi

Kazuya Tanizumi

Kazuaki Tsuda

Masayuki Munekiyo

Kazunari Noguchi

A crane device is capable of setting multiple types of number of rope falls between a tip of a boom and a hook block, and includes: a feed length detection unit that detects a feed length of a rope fed from a winch on which the rope is wound; a boom angle detection unit that detects a boom hoist angle; and a number-of-falls determination unit that calculates information for determining the suitability of the number of falls for the rope on the basis of the feed length, hoist angle, boom length of the boom in a state of hoisting a grounded load.

Crane device, method for determining number of falls, and computer readable non-transitory recording medium

A crane creates a 3D map on the basis of three-dimensional information acquired by a three-dimensional information obtaining section that is provided on a boom. The three-dimensional information obtaining section: is configured to be capable of accumulating acquired three-dimensional information and to be capable of changing a measurement direction, a measurement range, and a measurement density; and creates the 3D map by superimposing accumulated three-dimensional information. When an operation signal for a swivel operation for a swivel base, a hoisting operation for the boom, or an extension/retraction operation for the boom has been detected, on the basis of the movement direction and movement speed of the boom as calculated from a detected value for the operation signal, the three-dimensional information obtaining section: changes the measurement direction; and narrows the measurement range and increases the measurement density as compared to when the operation signal has not been detected.

Crane

There is provided a monitoring camera () at a tip of a boom, a monitor () configured to display a captured image of a hook suspended from the tip of the boom, an attitude angle calculation device () configured to calculate, based on hook image position information on a screen displayed on the monitor () and hook position information in a real space, an attitude angle of the camera, and the attitude angle calculation device () includes a hook position calculation unit () configured to calculate a hook position on the screen actually displayed on the monitor (), a shift amount calculation unit () configured to calculate the distance between the hook position calculated by the hook position calculation unit () and a reference hook position of the hook on the screen displayed on the monitor () when it is assumed that the camera faces directly downward, and a camera inclination angle calculation unit () configured to calculate an inclination angle of the monitoring camera () based on the difference and a distance in a height direction from an optical axis center position of the monitoring camera () to the hook.

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Kagawa, Japan

Keisuke Tamaki