Split Axle Hand Cart Braking System
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Solution Overview
Problem
Existing hand cart braking systems fail to provide uniform braking force to both wheels, leading to instability on inclined surfaces and reduced maneuverability, especially when loaded, as they often require complex and costly designs to achieve independent wheel operation.
Innovation Solution
A single clutch braking system utilizing a split axle with a brake mounted at the junction of the axle segments, allowing independent rotation of each wheel segment and unified braking when needed, facilitated by a single actuator handle and rod or cable system, which can be a disc or drum brake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single fixed axle is used to mount both wheels, then the structure is simple, but uniform braking force cannot be achieved and maneuverability is reduced
Solution Approach 1:
The single fixed axle is divided into two separate axle segments, each independently mounted on the frame. This segmentation allows each wheel to be controlled independently while maintaining a relatively simple overall structure, resolving the contradiction between structural simplicity and braking uniformity.
2Reliability
If independent braking mechanisms are provided for each wheel, then uniform braking force is achieved, but the device complexity and cost increase
Solution Approach 1:
Two separate brake mechanisms are merged into a single integrated brake assembly that acts on both axle segments simultaneously. This combining approach achieves uniform braking force while avoiding the complexity and cost of completely independent braking systems for each wheel.
3Ease of manufacture
If a fixed axle is used, then manufacturing is simple, but maneuverability on nonlinear paths is adversely affected
Solution Approach 1:
The fixed axle is segmented into two independently mounted axle segments, allowing each to rotate freely and independently. This maintains ease of manufacture while significantly improving maneuverability on nonlinear paths, as each wheel can adapt to the path independently.
4Ease of operation
If braking force is applied unevenly to the two wheels, then the braking system is simpler to operate, but the hand cart swings to one side and cannot roll in a straight path
Solution Approach 1:
The brake assembly is designed to apply braking force simultaneously and uniformly to both axle segments through a single operating mechanism. This merging approach ensures straight path stability during braking while maintaining simple one-handed operation.
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 system ensures even braking force distribution, enhancing control and maneuverability on inclined surfaces and nonlinear paths while being cost-effective and suitable for both two-wheel and four-wheel hand carts, including retrofitting on existing models.
Implementation Method 1
When the brake is manually operated, the braking force is applied to both segments of the axle to smoothly stop the hand cart
Data Source
AI summary
An improved braking system for a hand cart is disclosed. The braking system has a split axle which is rotatably connected to the cart frame. Braking components are affixed to each of the split axle sections. An actuator is connected to a caliper system, which caliper system is used to push the braking components together to lock the split axle into a single axle for braking or controlling the cart.