Trash Bin Dolly With Spherical Hub and Radial Threads
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Solution Overview
Problem
Existing bulk material transport systems, such as wheeled carts and dollies, are prone to tipping and unintended separation of trash bins, especially in cramped environments, leading to spills and inefficient use of staff time and energy, and lack a secure but easily separable connection between bins and the transport device.
Innovation Solution
A dolly system with a base featuring caster wheels, a boss with radial threads, and catches that resist axial and rotational translation of bins, along with an optional brake assembly and connector brackets for multiple dolly assembly integration, ensuring secure and efficient transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional wheeled carts and dollies are used to transport trash bins, then staff can move bins with less physical effort, but the bins are prone to tipping and unintended separation during transport
Solution Approach 1:
The connection system is segmented into distinct functional components: a hub structure with radial threads for axial constraint, separate catches for rotational constraint, and an optional brake assembly for additional stability. This segmentation allows each component to address specific instability issues independently while working together to provide comprehensive bin security during transport.
Solution Approach 2:
The hub is designed with a substantially spherical shape that interfaces with a corresponding spherical recess in the bin bottom. This curved geometry enables rotational movement during bin placement while providing stable positioning once engaged, and the radial threads extend from the spherical hub to prevent axial separation. The curved surfaces facilitate intuitive user interaction and secure engagement.
2Object-affected harmful factors
If the connection between bin and dolly is made more secure to prevent separation, then spills are reduced, but the separation of bin from dolly becomes more difficult when needed
Solution Approach 1:
The connection system transitions from a static fixed connection to a dynamic controlled connection. The radial threads allow controlled rotational engagement and disengagement, while the catches provide reversible rotational constraint. The optional brake assembly can be engaged or disengaged as needed. This dynamic design maintains secure connection during transport but allows easy separation when required by staff.
3Productivity
If the dolly system is designed to accommodate multiple bins, then transport efficiency increases, but the system complexity and space requirements increase
Solution Approach 1:
The dolly base is designed with multiple hubs positioned at different locations, each capable of receiving and securing a bin independently. The same hub structure, thread pattern, and catch mechanism are repeated across multiple locations, allowing the system to accommodate one or multiple bins using identical components. This modular approach increases transport capacity without significantly increasing system complexity.
4Reliability
If the dolly system includes additional security features like brakes and connectors, then bin stability during transport is improved, but the device complexity increases
Solution Approach 1:
The connection system is designed to be self-securing through the interaction of the spherical hub with the bin's spherical recess and radial threads. When staff place a bin on the dolly, the bin's weight automatically engages the radial threads and activates the catches, providing secure connection without requiring additional fastening actions. The optional brake assembly similarly provides passive stability when engaged, reducing the need for active monitoring or adjustment during transport.
Data Source
AI summary
A dolly system that is constructed to removeably cooperate with bulk material can(s) or bin(s) to facilitate convenient transport thereof. The dolly system includes a base having a plurality of caster wheels. A bin facing side of the base includes a boss and one or more threads that are shaped to index a respective material bin relative to the base and restrict axial translation therebetween. A catch is defined by the base and engages the bin to resist opposite rotational translation therebetween. The dolly system can include an optional brake assembly supported by the base and selectively operable to resist translation and/or tipping of the dolly system and one or more optional connection brackets for selectively connecting a plurality of discrete dollies and respective bins relative to one another.