Nondestructive inspection device and crane equipped with nondestructive inspection device

• US 20060027751A1
• Filed: 01/06/2005
• Published: 02/09/2006
• Est. Priority Date: 08/05/2004
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Uchida, Koji, Masumoto, Masanori, Kurita, Koichi, Kusano, Toshiyuki
• Granted Patent: US 7,420,174 B2
• Time in Patent Office: Days
• US Class Current: 250/358.100
• CPC Class Codes: G01V 5/0016 Active interrogation, i.e. using an external radiation source, e.g. using pulsed, continuous or cosmic rays
• CPC Class Codes: G01V 5/22 Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays

Abstract

An object is to provide a nondestructive inspection device of a low equipment cost, and a crane equipped with the nondestructive inspection device. The nondestructive inspection device is provided for a quay crane, on a transporting route of the container. The nondestructive inspection device irradiates radiation from radiation sources to a container which has entered into an inspection area, and detects radiation that has transmitted through the container using the same detector, and nondestructively inspects the entire inside of the container based on information of intensity of the radiation and information of detection position of the radiation. The nondestructive inspection device is provided with; a modulation device which assigns different modulations to each radiation emitted from each of the radiation sources, and an identification device that distinguishes the modulation assigned to the radiation incident on the detector based on the output of the detector, and identifies which one of the radiation sources this radiation has been emitted from.

Claims

1. A nondestructive inspection device which irradiates radiation from a radiation source to an inspection object, and detects radiation transmitted through said inspection object using a detector, and inspects the inside of said inspection object nondestructively based on information of intensity of said radiation and information of detection position of the radiation,

wherein a plurality of said radiation sources are arranged so as to respectively irradiate said radiation to said same detector from different positions on opposite sides of an inspection area into which said inspection object enters, the nondestructive inspection device comprising:

a modulation device which assigns different modulations to each radiation emitted from each of said radiation sources, and

an identification device that distinguishes the modulation assigned to the radiation incident on said detector based on the output of said detector, and identifies which one of said radiation sources said radiation has been emitted from.

2. A nondestructive inspection device according to claim 1, wherein among said radiation sources, said radiation source which irradiates said radiation to a end part of said inspection area is disposed in either a front facing position of said end part, or a position which is outside of said front facing position.

3. A crane having a nondestructive inspection device according to claim 1.

4. A crane according to claim 3, wherein said crane is a quay crane.