Adjustable Boat Lift Bunks for Varying Hull Configurations
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Solution Overview
Problem
Traditional boat lifts have fixed bunk spacings, making them incompatible with boats of different sizes or hull configurations, necessitating the purchase of a new lift even if the existing lift has sufficient lifting capacity.
Innovation Solution
The boat lift features pivotally attached bunks with adjustable distances and angles, allowing for customizable engagement with various hull designs through a multi-part construction and adjustable top portions on the bunks, which can be positioned to accommodate different hull sizes and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the bunk spacing is fixed, then the structure is simple and easy to manufacture, but the lift cannot accommodate boats of different sizes or hull configurations
Solution Approach 1:
The bunk is divided into multiple segments that can be independently positioned. Each bunk consists of a first portion and a second portion that can be adjusted relative to each other, allowing the spacing between bunks to be customized for different boat sizes and hull configurations while maintaining a relatively simple overall structure.
Solution Approach 2:
The bunk structure incorporates adjustable and movable components rather than fixed rigid connections. The bunks can be repositioned along the beams and adjusted to different angles, transforming the static fixed-spacing structure into a dynamic adjustable one that adapts to various boat types.
2Adaptability or versatility
If the bunk spacing is fixed, then the manufacturing and installation are simple, but the lift must be replaced when accommodating different boat types
Solution Approach 1:
The bunk system is segmented into standardized modules that can be manufactured independently and then assembled in different configurations. This modular approach allows for relatively simple manufacturing of individual components while enabling great versatility in the final assembled structure.
Solution Approach 2:
The bunk design creates a universal lifting system that can accommodate multiple boat types through a single lift structure. The adjustable bunks serve multiple functions by being repositionable to different locations and orientations, eliminating the need for multiple specialized lifts for different boat types.
3Adaptability or versatility
If the bunks are positioned at fixed angles, then the structure is stable and simple, but the engaging surfaces cannot properly engage hulls with different configurations
Solution Approach 1:
The bunks are designed with rotational and translational adjustability, allowing them to be positioned at various angles relative to the beams. This dynamic positioning capability enables proper engagement with different hull configurations while maintaining structural stability through secure locking mechanisms at the selected positions.
Solution Approach 2:
The bunk structure allows for localized adjustment of the engaging surfaces while maintaining the overall structural integrity. Each bunk can be independently positioned and angled to match the specific hull configuration it needs to support, while the rest of the lift structure remains stable and unchanged.
Data Source
AI summary
A bunk for a boat lift includes a bottom portion pivotally configured to attach to one or more lifting beams of the boat lift. A top portion is positionably securable to the bottom portion wherein the top portion comprises includes a boat engaging surface having a first end and a second end wherein the first end is a first distance from a midplane of the top portion and the second end is a second distance from the midplane of the top portion. The top portion is positionable into a first position where the boat engaging surface is in a first position relative to the bottom portion and wherein the top portion is positionable into a second position by moving the top portion end for end relative to the bottom portion wherein boat engaging surface is a second position relative to the bottom portion.