Rope Inspection Device Dynamic Tracking for Crane Safety
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Solution Overview
Problem
Existing rope inspection devices for cranes, such as those described in Patent Literature 1, face challenges in accurately detecting rope deterioration due to fluctuations in the distance between the camera and the rope during crane operation.
Innovation Solution
A rope inspection device is designed to be attached to a work machine, featuring a rope inspection unit capable of detecting rope deterioration and a support unit that securely attaches to a predetermined portion of the machine, allowing the inspection unit to follow the movement of the rope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera is fixed to the top of the gantry for rope inspection, then the inspection device can be securely mounted, but the distance between the camera and the rope fluctuates during crane operation making accurate detection difficult
Solution Approach 1:
The patent applies the dynamics principle by making the camera position adjustable and movable rather than fixed. The support unit allows the camera to be positioned at different locations on the gantry and can move along the gantry beam, enabling the inspection device to dynamically track the rope's position during crane operation and maintain accurate detection despite changing distances
2Device complexity
If the camera position is fixed on the gantry, then the mounting structure is simple, but the inspection accuracy deteriorates when the rope position changes during crane operation
Solution Approach 1:
The support unit incorporates dynamic positioning capabilities allowing the camera to move along the gantry beam and adjust its position dynamically. This enables the system to compensate for rope position changes during crane operation while maintaining relatively simple mounting structures that can be attached to existing gantry components
3Measurement precision
If the inspection device follows the rope movement, then detection accuracy is maintained, but the device complexity increases due to additional support mechanisms
Solution Approach 1:
The support unit provides dynamic following capability through movable mounting mechanisms that allow the camera to track the rope's position. The unit can be adjusted to different locations on the gantry and move along the beam, enabling accurate rope inspection while adding manageable complexity through standardized adjustment mechanisms rather than complex automated tracking systems
Data Source
AI summary
A rope inspection device is capable of accurately detecting deterioration of a rope used in a work machine. The rope inspection device is attached to a crane having a machine body that includes a backstop, a boom capable of rising/lowering relative to the machine body, a winch, and a rope that is led out from the winch. The rope inspection device includes a rope inspection unit capable of inspecting the deterioration state of the rope, and a support unit attached to the machine body, the support unit supporting the rope inspection unit so that the rope inspection unit is able to follow the movement of the rope.