Corkline Stacker Arm Integrated with Net Crane
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In ring purse seiner vessels, the separate control of the net crane and corkline stacker leads to potential misunderstandings and collisions, requiring coordination between operators and occupying valuable space, especially on smaller vessels.
Innovation Solution
A ring purse seine crane design where the corkline stacker arm is mounted directly on the crane arm, allowing it to move in tandem with the net layer roller, reducing the need for a separate base and enabling single-operator control, with hydraulic lines and swivels to enhance durability and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the corkline stacker is arranged on a separate base, then it can operate independently, but it occupies valuable space and requires separate control leading to potential collisions
Solution Approach 1:
The patent combines the corkline stacker and net crane onto a single common base structure. The corkline stacker arm is mounted on the crane arm, allowing both functions to share the same foundation and control system, thereby eliminating the need for separate space while maintaining operational independence through coordinated control
2Ease of operation
If the corkline stacker is arranged on a separate base, then it can operate independently, but it requires coordination between operators increasing complexity
Solution Approach 1:
By merging the control systems of the net crane and corkline stacker into a single integrated control unit, the patent eliminates the need for coordination between separate operators. The unified control system manages both functions simultaneously, reducing operational complexity while maintaining independent operation capability
Solution Approach 2:
The common base structure serves multiple functions: it supports both the net crane and corkline stacker, provides a unified control platform, and enables coordinated movement of both arms. This multi-functional design reduces the overall system complexity by consolidating control resources
3Area of stationary object
If the corkline stacker arm is mounted on the crane arm, then space is saved, but the structure becomes more complex
Solution Approach 1:
The patent implements a nested structure where the corkline stacker arm is mounted on the crane arm, creating a compact hierarchical arrangement. This nesting reduces the overall footprint by placing one mechanism within the structural envelope of another, saving space while the modular design keeps structural complexity manageable
4Ease of manufacture
If separate bases are used for net crane and corkline stacker, then each can be optimized independently, but collisions risk increases
Solution Approach 1:
By merging the base structures and implementing unified control, the patent eliminates collision risk between separate units. The integrated system coordinates the movement of both arms under single control, preventing collisions that would occur with independent operation, while still allowing each arm to be optimized for its specific function
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A fishing net crane (0) with a net layer roller (4) with a corkline stacker arm (5) mounted on a corkline stacker bracket (17) on the net crane (0) wherein the corkline stacker arm (5) carries a corkline stacker sheave (6). The net crane comprises a vertical arm (1) on a rotating bracket (16) turning about a vertical axis in a slewing bearing (141) on a crane base (14) in the structure of the ship, and wherein the corkline stacker arm (5) is mounted on a corkline stacker bracket (17) on said vertical arm (1). The bracket (17) has an inner slewing bearing (511) which holds an inner arm (51) which outer end has an elbow slewing bearing (512) which holds an outer arm (52) with an outer slewing bearing (513) which holds a corkline stacker fork (54) with its corkline stacker sheave (6). Preferably the slewing bearing axes are vertical.