Convertible Wagon-Ski With Telescopic Landing Gears

Solution Overview

Problem

Existing carriages are not adaptable to a plurality of operating surfaces, as wheeled carriages are unsuitable for rough or uneven surfaces while sledges are inefficient on smooth surfaces, leading to inconvenience and inefficiency in transportation.

Innovation Solution

A convertible carriage with retractable wheel assemblies and a sledge, enabled by telescopic landing gears that can switch between rolling and sliding operation modes, allowing the carriage to adapt to various operating surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If wheeled carriages are used for transportation, then efficiency on smooth surfaces is improved, but suitability for rough or uneven surfaces deteriorates

Engineering Contradiction:

Improvetransportation efficiencyVSAvoidsuitability for different operating surfaces

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The carriage employs dynamically switchable support mechanisms - wheels can be raised or lowered relative to the carriage body depending on the operating surface conditions. On smooth surfaces, wheels are lowered for efficient rolling; on rough surfaces, wheels are raised and the carriage operates on skids instead, demonstrating dynamic adaptation to environmental changes

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The carriage is designed with dual functionality - it can operate in two distinct modes: wheel-supported mode for smooth surfaces and skid-supported mode for rough surfaces. This multi-functionality allows a single carriage design to handle diverse operating conditions without requiring separate specialized vehicles

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If sledges are used for transportation on uneven surfaces, then suitability for rough surfaces is improved, but efficiency on smooth surfaces deteriorates

Engineering Contradiction:

Improvesuitability for rough surfacesVSAvoidtransportation efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The carriage employs dynamically switchable support mechanisms - wheels can be raised or lowered relative to the carriage body depending on the operating surface conditions. On smooth surfaces, wheels are lowered for efficient rolling; on rough surfaces, wheels are raised and the carriage operates on skids instead, demonstrating dynamic adaptation to environmental changes

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The carriage is designed with dual functionality - it can operate in two distinct modes: wheel-supported mode for smooth surfaces and skid-supported mode for rough surfaces. This multi-functionality allows a single carriage design to handle diverse operating conditions without requiring separate specialized vehicles

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If convertible carriage with switching mechanisms is provided, then adaptability to multiple surfaces is improved, but device complexity increases

Engineering Contradiction:

Improveadaptability to multiple operating surfacesVSAvoidmechanical structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The carriage is divided into functionally independent segments - the wheel assemblies are separable from the main carriage body through raiseable mechanisms. This segmentation allows the wheels to be independently positioned (raised or lowered) without affecting the core carriage structure, simplifying the overall switching mechanism

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The wheel assemblies are extracted as removable components that can be raised clear of the ground when not needed. This extraction approach eliminates the need for complex in-place transformation mechanisms, as the wheels are simply lifted or removed rather than transformed into another configuration

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20250145207A1All Terrain Wagon-Ski

Publication Date: 2025.05.08 CURTIS ERIC

AI summary

A convertible carriage for transporting subjects on a plurality of operating surfaces. The convertible carriage includes a receptacle, a sledge attached to the receptacle, a set of wheel assemblies, and a set of telescopic landing gears attached to the receptacle, and connected to the wheel assemblies. The telescopic landing gears are configured to operably extend or retract to switch the convertible carriage between a rolling operation mode and a sliding operation mode. In the rolling operation mode, one or more wheel assemblies from the set of wheel assemblies are in contact with the operating surface such that the convertible carriage is transportable on an operating surface by rolling of the wheel assemblies. In the sliding operation mode, the set of wheel assemblies are retracted to allow the sledge to contact with the operating surface such that the convertible carriage may be transportable on the operating surface by sliding.