Winch monitoring method, winch monitoring device, and crane
AssigneeKobelco Construction Machinery Co., Ltd.
InventorsTeppei Maedo, Hiroki Nakayama, Kazufumi Kudara, Yohei Ogawa
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Abstract
A method for judging a winding disorder of a rope onto a drum of a winch includes acquiring a captured image by a camera oriented to the drum, performing, on the basis of the captured image, a judgment on whether the winding disorder of the rope is present or absent and a determination of a disorder degree indicating the degree of the winding disorder, and outputting results of the judgment and the determination.
Claims14
A winch monitoring method for monitoring a condition of a rope wound around a drum of a winch, the method comprising:
- orienting a camera to the drum to acquire a captured image of the drum and the rope by the camera;
- judging that a winding disorder of the rope is present;
- determining a disorder degree that is a degree of the winding disorder on a basis of the captured image;
- outputting results of the judging and the determining;
- acquiring information on an operation result of the winch;
- performing a prediction of an operation remaining life of the winch on a basis of the disorder degree and the operation result;
- and
- outputting a result of the prediction,
- wherein performing the prediction of the operation remaining life includes determining a progress pace of the winding disorder according to a degree of progress of the disorder degree and the operation result in a period taken for the progress of the disorder degree each time the disorder degree progresses, and predicting, as the operation remaining life, an operation amount allowed for the winch until the disorder degree will have progressed to a predetermined limit degree at the progress pace.
A winch monitoring apparatus for monitoring a condition of a rope wound around a drum of a winch, the apparatus comprising:
- a camera oriented to the drum of the winch to generate a captured image of the drum and the rope;
- and
- a processor configured to perform a judgment on whether a winding disorder of the rope is present or absent and a determination of a disorder degree that is a degree of the winding disorder, on a basis of the captured image, and to output the results of the judgment and the determination, wherein the processor is further configured to:
- acquire information on an operation result of the winch;
- predict an operation remaining life of the winch based on the disorder degree and the operation result;
- and
- output a result of the prediction.
A crane comprising:
- a boom having a distal end from which a suspended load is suspended;
- a winch including a drum for winding a rope that supports the suspended load or the boom and a motor for rotating the drum;
- a camera oriented to the drum to generate a captured image of the drum and the rope;
- and
- a processor configured to perform a judgment on whether a winding disorder of the rope is present or absent and a determination of a disorder degree that is a degree of the winding disorder, on a basis of the captured image, and to output the results of the judgment and the determination, wherein the processor is further configured to:
- acquire information on an operation result of the winch;
- predict an operation remaining life of the winch based on the disorder degree and the operation result;
- and
- output a result of the prediction.
Dependencies are inferred from the claim text.