Rope Ladder Metallic Clamping Sockets Press Assembly
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Solution Overview
Problem
The existing manufacturing process of rope ladders for lifeboats is time-consuming and prone to assembly failures due to the use of highly resistant threads to tie together converging rope lengths, which can lead to functional insufficiency and deterioration over time.
Innovation Solution
The use of specially configured metallic clamping sockets to encase and securely connect the converging rope lengths, eliminating the need for manual threading and providing a more reliable and aesthetically improved rope ladder, along with an apparatus equipped with presses for efficient assembly, allowing linear movement to facilitate the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If highly resistant thread is used to tie together the two rope lengths, then the rope ladder can be assembled, but the manufacturing process becomes time-consuming and prone to assembly failures
Solution Approach 1:
The patent replaces the manual tying process with a mechanical pressing system. A pressing device applies force to deform the H-shaped metallic clamping socket into a closed configuration, mechanically securing the rope lengths without requiring manual threading or tying operations. This substitution of manual mechanical operations with an automated pressing mechanism resolves the contradiction between ease of assembly and manufacturing productivity.
Solution Approach 2:
The patent introduces an intermediary component - the H-shaped metallic clamping socket - that serves as a mediator between the two rope lengths. This clamping socket acts as a intermediate element that receives and secures both rope lengths within its structure, then through the pressing operation, transforms into a closed configuration that permanently fixes the ropes. This intermediary component eliminates the need for direct tying while enabling automated assembly.
2Ease of manufacture
If highly resistant thread is used to tie the rope lengths, then assembly is possible, but assembly failures and deterioration can occur over time
Solution Approach 1:
The patent replaces the unreliable thread-tying mechanical system with a robust metallic clamping and pressing system. The H-shaped metallic socket provides a rigid, durable structure that mechanically encloses and secures the rope lengths. The pressing operation creates a permanent deformation that locks the ropes in place, eliminating the deterioration and failure modes associated with threaded connections exposed to environmental factors.
Solution Approach 2:
The patent employs a composite construction combining metallic material (the H-shaped clamping socket) with rope material. This composite structure leverages the strength and durability of metal to protect and secure the flexible rope elements. The metallic clamping socket acts as a protective enclosure that shields the rope lengths from external damage while maintaining secure attachment.
3Reliability
If metallic clamping sockets are used to encase rope lengths, then assembly reliability improves, but device complexity increases
Solution Approach 1:
The patent segments the assembly system into distinct functional components: the H-shaped metallic clamping socket as a separate replaceable element, the pressing device as an independent assembly operation, and the rope lengths as separate components. This segmentation allows each component to be optimized independently and simplifies the overall assembly process, as the clamping socket can be pre-positioned and then simply pressed into final configuration without requiring complex integrated mechanisms.
4Productivity
If presses with freedom of movement are used in the apparatus, then manufacturing productivity increases, but apparatus complexity increases
Solution Approach 1:
The patent incorporates dynamic elements into the pressing device, specifically the carriage that can move along rails and the pressing head that can move vertically. This dynamic capability allows the pressing operation to access different positions along the rope ladder assembly and perform the clamping operation at multiple locations efficiently. The movement freedom enables continuous production flow while the modular dynamic structure keeps the apparatus complexity manageable through standardized motion components.
Data Source
AI summary
A method and an apparatus for the production of a rope ladder that includes the use of metallic clamping sockets (4) that fixedly connect into a single body two parallel running rope lengths (2a, 2b) at each side of the steps (1) of the ladder, wherein rope lengths (2a, 2b) pass through apertures (1a, 1b) of the side ends of the steps (1 ). Each metallic clamping socket (4) has an H- type section and comprises cavities (14a, 14b) wherein are imported the two parallel running rope lengths (2a, 2b) at each side of steps (1 ), thereafter the clamping socket (4) being pressed in a press assembly (17) in the form of a closed ellipse encaging and thereby fixedly connecting rope lengths (2a, 2b) into a single rigid rope member. The positioning of press assembly (17) can be regulated in a longitudinal and in a traverse direction along the workbench of the apparatus of the invention so that it may successively approach sequential clamping sockets (4) on the workbench to effect a closure operation of the same.