Back to results
US 12,673,847 B2Granted
Wire rope inspection device
AssigneeShimadzu Corporation
InventorHajime Takemoto
Life of this patent
Estimating the term…
Abstract
This wire rope inspection device is provided with an urging unit for urging a detection unit in a direction to approach a wire rope by an elastic force to an inspection position at which the detection unit is arranged at a time of an inspection operation for inspecting the wire rope and a drive unit for moving the detection unit in a direction away from the wire rope to a normal operation position at which the detection unit is arranged at a time of a normal operation.
Claims14
A wire rope inspection device comprising:
- an excitation unit configured to apply a first magnetic flux to a wire rope which is an inspection target;
- a detection unit configured to detect a second magnetic flux of the wire rope to which the first magnetic flux has been applied by the excitation unit;
- an urging unit configured to move the detection unit in a direction to approach the wire rope by urging the detection unit by an elastic force to an inspection position at which the detection unit is arranged at a time of an inspection operation for inspecting the wire rope;
- and
- a drive unit configured to move the detection unit in a direction away from the wire rope to a normal operation position at which the detection unit is arranged at a time of a normal operation at which no inspection is performed.
2 more elements
A wire rope inspection device comprising:
- an excitation unit configured to apply a first magnetic flux to a wire rope which is an inspection target;
- a detection unit configured to detect a second magnetic flux of the wire rope to which the first magnetic flux has been applied by the excitation unit;
- an urging unit configured to urge the detection unit in a direction to approach the wire rope by an elastic force to an inspection position at which the detection unit is arranged at a time of an inspection operation for inspecting the wire rope;
- a drive unit configured to move the detection unit in a direction away from the wire rope to a normal operation position at which the detection unit is arranged at a time of a normal operation at which no inspection is performed;
- and
- an attenuation unit configured to attenuate a moving speed of the detection unit when the detection unit moves in a direction to approach the wire rope by being urged by the urging unit.
3 more elements
A wire rope inspection device comprising:
- an excitation unit configured to apply a first magnetic flux to a wire rope which is an inspection target;
- a detection unit configured to detect a second magnetic flux of the wire rope to which the first magnetic flux has been applied by the excitation unit;
- an urging unit configured to urge the detection unit in a direction to approach the wire rope by an elastic force to an inspection position at which the detection unit is arranged at a time of an inspection operation for inspecting the wire rope;
- a drive unit configured to move the detection unit in a direction away from the wire rope to a normal operation position at which the detection unit is arranged at a time of a normal operation at which no inspection is performed;
- and
- a magnetic field application unit configured to apply a magnetic field to the wire rope in advance to align a direction of magnetization of the wire rope before the first magnetic flux is applied by the excitation unit,
- wherein the excitation unit includes an excitation coil for exciting the magnetization of the wire rope after the magnetic field is applied by the magnetic field application unit in advance,
- wherein the detection unit includes a detection coil wound around the wire rope along an extending direction of the wire rope to detect the second magnetic flux in the wire rope in which a state of the magnetization has been excited by the excitation coil, by a total magnetic flux method that measures the second magnetic flux inside the wire rope,
- wherein the urging unit is configured to urge the detection coil to the inspection position by the elastic force, and
- wherein the drive unit is configured to move the detection coil to the normal operation position.
7 more elements
Dependencies are inferred from the claim text.