Heavy Duty Carriage Cart with Adaptive Platform for Uneven Floors
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Solution Overview
Problem
Conventional heavy-duty carriage carts struggle to maintain stability and smooth movement on uneven or inclined floor surfaces, leading to potential course changes and unintentional stops, which can result in furniture falling or injury, due to issues with load distribution and friction on distorted or sloped surfaces.
Innovation Solution
A heavy-duty carriage cart design featuring a load receiving platform with a planar portion and tapered elastic member that adjusts its inclining angle to maintain contact with the object and floor, combined with strategically positioned rollers supported by multiple shafts to distribute load and prevent roller fall into gaps, ensuring stable and smooth movement on various floor types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the turntable is designed to be vertically extendable only, then the structure is simple, but it cannot maintain contact with the heavy object on inclined or distorted floor surfaces
Solution Approach 1:
The turntable is designed with both vertical extension capability and horizontal rotation capability, transforming from a static vertical-only movement mechanism to a dynamic system that can adapt its orientation to match the inclined or distorted floor surface, thereby maintaining contact with the heavy object
Solution Approach 2:
The turntable's inclining angle is made variable through the combined action of vertical extension and horizontal rotation, allowing the parameter of inclination angle to be adjusted to match the floor surface conditions and maintain stable contact with the heavy object
2Reliability
If the rollers are positioned only outside the turntable perimeter, then the turntable structure is simple, but load concentrates on few rollers causing course changes and stops
Solution Approach 1:
The roller support system is segmented into multiple independent roller groups positioned at different locations (outside and inside the turntable perimeter), allowing load to be distributed across multiple rollers and preventing concentration on single points
Solution Approach 2:
Rollers are strategically positioned at specific locations both outside and inside the turntable perimeter based on local load requirements, with the load receiving platform extending to positions inside the turntable to utilize additional rollers for load distribution
3Reliability
If the planar portion is fixed in angle, then the structure is simple, but it cannot maintain contact with the heavy object on distorted floors
Solution Approach 1:
The load receiving platform's planar portion is designed with adjustable inclining angle capability through the elastic member mechanism, allowing it to dynamically change its angle to maintain contact with the heavy object on distorted or inclined floor surfaces
Solution Approach 2:
The inclining angle parameter of the planar portion is made variable through the elastic member's extension and retraction, enabling the platform to adapt its angle to match the heavy object's orientation on different floor conditions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for stable and safe movement of heavy objects on diverse floor surfaces, including those with distortions and inclines, by maintaining contact with both the object and floor, reducing friction and resistance, and preventing unintentional stops or course changes, thus enhancing operability and safety.
Implementation Method 1
an elastic member arranged in a tapered shape outside the perimeter of the planar portion 4, such that extension and retraction of the planar portion can be adjusted while changing an inclining angle of the planar portion
Implementation Method 2
a plurality of rollers 5 pivotally supported by a plurality of shafts at a lower part of the carriage cart main body 2
Data Source
Figure 1~2
Figure 3~4
Figure 5(a)~5(c)
AI summary
A heavy duty carriage cart is provided, which is used when moving a heavy object, such as a piece of furniture such as a wardrobe or a cabinet, or a refrigerator or a flowerpot used in ordinary houses and offices. The heavy object can safely be moved without being influenced by factors which obstruct the traveling of the carriage cart, such as distortions or joints of flooring material on a floor surface. In a lower part of a carriage cart main body 2, front rollers 5 are pivotally supported by a front shaft 6a, rear rollers 5 are pivotally supported by a rear shaft 6c, and intermediate rollers 5 are pivotally supported by an intermediate shaft 6b at a wheel base of the rollers. A load receiving platform 3, having a planar portion 4 which is freely movable while contacting with the bottom of the heavy object, is placed on an upper part of the carriage cart main body 2. Four heavy duty carriage carts 1 are used to move the heavy object.