Mast Hoisting Implement With Movable Link
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Solution Overview
Problem
Existing hoisting systems for long objects like construction machine masts require complex structures and heavy components, leading to inefficient operation and a high risk of operational errors when changing the hoisting posture, especially during transportation and attachment processes.
Innovation Solution
A hoisting implement system with a simple configuration using a pair of first and second connection parts on the mast, where the second connection part includes a link that can swing to adjust the hoisting posture without needing to detach or attach hoist ropes, allowing the operator to easily switch between swingable and fixed states to control the mast's tilt angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pairs of hoist rings are provided at different longitudinal positions to change hoisting posture, then the hoisting posture can be changed, but the device complexity and weight increase
Solution Approach 1:
The patent applies the dynamics principle by making the hoist ring movable along the longitudinal direction of the long object instead of providing multiple fixed hoist rings at different positions. The hoist ring can be positioned at different locations dynamically to achieve different hoisting postures, thereby reducing structural complexity while maintaining adaptability. This is implemented through a movable hoist ring that can slide or be repositioned along the long object's length.
Solution Approach 2:
The patent implements universality by designing a single hoist ring that can serve multiple functions by being repositioned to different locations along the long object. Instead of having dedicated hoist rings for each hoisting posture, one universal hoist ring performs all hoisting functions by changing its position, thus reducing the number of components and simplifying the overall structure.
2Adaptability or versatility
If multiple pairs of hoist rings are provided to change hoisting posture, then the hoisting posture can be changed, but the weight of the hoisting implement increases
Solution Approach 1:
The patent reduces weight by replacing multiple static hoist rings with a single dynamic hoist ring that can be repositioned. This eliminates the weight of redundant hoist rings while maintaining the capability to achieve different hoisting postures through the movable hoist ring's repositioning along the long object.
Solution Approach 2:
The universal hoist ring design allows one component to replace multiple components, directly reducing the total weight of the hoisting implement. The single hoist ring performs the function of what would otherwise require multiple fixed hoist rings, achieving weight reduction without sacrificing functional capability.
3Adaptability or versatility
If shackles are detached and attached at multiple locations to change posture, then the hoisting posture can be changed, but the ease of operation decreases due to heavy workload and long work time
Solution Approach 1:
The movable hoist ring eliminates the need for operators to detach and attach shackles at multiple locations. The hoist ring can be repositioned along the long object while remaining attached, allowing posture changes without repeated shackle operations. This significantly reduces operator workload and the time required for posture changes.
Solution Approach 2:
The patent extracts the shackle attachment/detachment operation from the posture change process. By making the hoist ring movable rather than requiring multiple fixed attachment points, the complex shackle operations are eliminated, leaving only simple repositioning actions that reduce operator burden.
4Adaptability or versatility
If a pull-in device is attached to the hoisting balance device to change wire length and adjust tilt, then the hoisting posture can be changed, but the device complexity and weight increase
Solution Approach 1:
The patent extracts the tilt adjustment function from the hoisting balance device by using a separately movable hoist ring along the long object. Instead of integrating a pull-in device into the balance device, the invention uses the hoist ring's repositioning capability to achieve tilt adjustment, thereby simplifying the overall system structure.
Solution Approach 2:
The movable hoist ring serves multiple functions: it enables both vertical lifting and tilt adjustment of the long object. This universal component replaces the need for separate pull-in devices and maintains simplicity while achieving posture control capabilities.
Data Source
AI summary
Provided is a hoisting implement which can change a hoisting posture of a long object with a simple and light-weight configuration and minimize a possibility of occurrence of operational errors. The hoisting implement includes a first connection part and a second connection part disposed so that a center of gravity comes between the first connection part and the second connection part along the longitudinal direction of the long object. The first connection part allows a first end of the hoist rope to be fixed to the long object. The second connection part includes a link having a distal portion to which a second end of the hoist rope is allowed to be connected, a swing supporting portion fixed to the long object to swingably support the link about a proximal portion of the link, and a holding portion that detachably holds the distal portion of the laid link.