Modular Ladder Structure for Stable Tire and A-Frame Use
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Solution Overview
Problem
Existing car ladders lack structural stability, are prone to slipping on rough or inclined surfaces, and are limited in their functionality, making them unsafe and inconvenient for use with various car types and models.
Innovation Solution
A multifunction ladder structure comprising a first and second ladder frame, combining assemblies, and optional extension boards and bolts, allowing for stable use as a tire ladder or A-shaped ladder, with adjustable foot rods for different tire sizes and surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple ladder structure is used, then it is easy to manufacture and operate, but it lacks structural stability and slips on rough or inclined surfaces
Solution Approach 1:
The ladder structure incorporates adjustable foot rods that can be extended or repositioned to adapt to different ground conditions and inclines. This dynamic adjustment capability allows the ladder to maintain stability on rough or inclined surfaces while preserving ease of operation through simple manual adjustment mechanisms.
Solution Approach 2:
The ladder design includes adjustable parameters such as foot rod length and angle of inclination, allowing the structural configuration to be changed based on ground conditions. This enables the same ladder structure to provide stable support on various surfaces without requiring multiple different ladder types.
2Device complexity
If a fixed-function ladder is used, then the structure is simple, but it cannot be applied to various car types or tire sizes
Solution Approach 1:
The ladder is designed with universal adaptability to serve multiple functions: it can be configured as a tire ladder for different car types, an A-shaped ladder for various ground conditions, and a platform ladder. The adjustable foot rods and modular structure enable the same device to adapt to different tire sizes, car models, and surface conditions without requiring separate specialized ladders.
Solution Approach 2:
The adjustable foot rods allow the ladder to dynamically adapt its configuration for different applications. By extending or repositioning the foot rods, the same basic structure can be optimized for tire ladders, A-shaped ladders, or platform ladders, providing versatility across different car types and usage scenarios.
3Length of stationary object
If the foot rods are made longer to reach higher surfaces, then the ladder can access more areas, but the ladder becomes harder to control and less stable
Solution Approach 1:
The foot rods are designed to be adjustable in length and position, allowing the user to optimize the ladder configuration for each specific task. This dynamic adjustment enables the ladder to maintain proper balance and control stability even when extended to reach higher surfaces, as the foot rods can be positioned to provide adequate base support.
Data Source
AI summary
The present invention discloses multifunction ladder structures. The first embodiment includes a first ladder frame; a second ladder frame; and two combining assemblies that combine the second ladder frame with the first ladder frame. Another embodiment further includes an extension board, while a third embodiment includes two bolts set detachably fixed to the second ladder frame. With the implementation of the present invention, the multifunction ladder structures have the special benefit of being easy to install or operate; being able to insert and set firmly in between a tire and the wheel fender as a tire ladder; being able to stand firmly beside a car or other places as an A-shaped ladder; applying to tires of different size by adjusting the length of the foot rods; standing firmly on rough or inclined ground, roads or object surfaces; and with the adoption of the extension board, versatile applications are accomplished.