Double-Layer Folding Cart with Rotatable Baffle
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Solution Overview
Problem
Existing single-layer carts have limited storage capacity, require multiple transports for multiple articles, and are inefficient in transporting long and thin articles due to their design, which can lead to articles tilting and rolling during transport.
Innovation Solution
A double-layer horizontal folding cart with a cart frame comprising a front frame, back frame, and chassis, where the chassis has two layers with articulated bottom frames, and a baffle frame that can be turned horizontal to enhance stability and storage capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-layer cart design is used, then the structure is simple, but the storage capacity is limited and multiple transportation trips are required
Solution Approach 1:
The patent transitions from a single-layer cart to a double-layer cart structure, adding a vertical dimension to the storage space. The chassis is divided into an upper layer and a lower layer, both capable of holding articles simultaneously, effectively doubling the storage capacity without significantly increasing the horizontal footprint of the cart.
Solution Approach 2:
The cart's chassis is segmented into two independent layers (upper and lower), each capable of holding articles. This segmentation allows the cart to transport multiple articles in parallel across different vertical levels, eliminating the need for multiple transportation trips while maintaining structural simplicity through modular design.
2Stability of the object's composition
If the storage space sides are connected and fixed, then the structure is stable, but long articles cannot be transported without tilting
Solution Approach 1:
The baffle frame is designed to be rotatable rather than fixed, allowing it to change its orientation from a vertical position (providing structural stability for regular articles) to a horizontal position (enabling transport of long articles by reducing the inclination angle). This dynamic adjustment capability allows the cart to adapt to different transportation needs while maintaining structural integrity.
Solution Approach 2:
The baffle frame can be pre-adjusted to a horizontal position before loading long articles, creating a stable base that prevents tilting during transport. This preliminary configuration ensures that long articles are supported properly from the beginning of the transportation process, preventing rolling or shifting.
3Length of moving object
If articles are placed with one end at the bottom and the other end tilting upwards, then long articles can fit in the cart, but the large inclination angle causes articles to roll during transportation
Solution Approach 1:
The baffle frame's rotatable design allows it to be positioned horizontally to support long articles, reducing the inclination angle from a steep upward tilt to a near-horizontal orientation. This dynamic adjustment maintains the ability to accommodate long articles while significantly improving transportation safety by preventing rolling.
Solution Approach 2:
By positioning the baffle frame horizontally before transporting long articles, the design preemptively counteracts the tendency of articles to roll or shift during transport. The horizontal baffle frame creates a stable base that opposes gravitational forces that would otherwise cause long articles to slide or roll, ensuring safer transportation.
Data Source
AI summary
A double-layer horizontal folding cart having a cart frame. The cart frame having a front frame, a back frame and a chassis riveted to a lower side of the front frame and a lower side of the back frame, wherein casters are arranged at the bottom of the front frame and the bottom of the back frame, and a hand lever is arranged on the front frame; the chassis having an upper layer and a lower layer, and each layer of the chassis having two bottom frames which are articulated symmetrically; and a baffle frame capable of being turned and opened to be horizontal is arranged on the back frame corresponding to the lower layer of the chassis. The double-layer horizontal folding cart can transport more articles every time, has higher transport efficiency, and can transport long and thin articles exceeding the length of the cart.