Snow Thrower Gear Reduction Layout for Compact Self-Propelled Clearing
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Solution Overview
Problem
Self-propelled single-stage snow throwers have low snow removal efficiency and complex machine structures due to belt-driven mechanisms, resulting in large machine sizes.
Innovation Solution
A snow thrower design featuring a dual-motor system with a telescopic connection and efficient energy distribution, including a battery pack housing with a biasing member and locking mechanism, a compact auger and impeller system, and a gear reduction assembly for improved power transmission, allowing for higher snow removal efficiency and a more compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If belt-driven mechanisms are used in self-propelled single-stage snow throwers, then the machine can achieve self-propelled motion, but the machine structure becomes complex and the machine size increases
Solution Approach 1:
The patent replaces the belt-driven mechanical transmission system with a more compact mechanical direct-drive system. The engine is directly connected to the auger and impeller through a simplified transmission mechanism, eliminating the need for complex belt-driven components while maintaining self-propelled functionality. This substitution reduces structural complexity and machine size.
2Ease of operation
If belt-driven mechanisms are used in self-propelled single-stage snow throwers, then the machine can achieve self-propelled motion, but the machine size becomes large
Solution Approach 1:
The patent employs a nested arrangement where the auger is positioned inside the impeller housing, and the transmission components are integrated within the compact engine assembly. This nesting of functional components allows the snow thrower to achieve self-propelled motion while minimizing the overall machine volume and creating a more compact design.
3Power
If belt-driven mechanisms are used in snow throwers, then power can be transmitted to moving parts, but the snow removal efficiency becomes low
Solution Approach 1:
The patent implements a dynamic transmission system that can vary the power delivery to the auger and impeller based on operating conditions. The engine is directly coupled to the working components through a transmission mechanism that optimizes power distribution, enabling higher snow removal efficiency compared to fixed belt-driven systems while maintaining effective power transmission.
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 enhances snow removal efficiency and reduces machine size by optimizing energy distribution and power transmission, resulting in improved performance and usability.
Implementation Method 1
a battery pack housing (111)
Implementation Method 2
a gear reduction assembly for improved power transmission
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A snow thrower includes: a first drive shaft enabled to rotate about a first axis; an auger having auger blades mounted to the first drive shaft; a second drive shaft enabled to rotate about a second axis; an impeller having an impeller base mounted to the second drive shaft and impeller blades mounted to the impeller base, the second axis and the first axis being perpendicular to each other; a walking wheel assembly configured to support the snow thrower to enable the snow thrower to walk on the ground; a first motor configured to drive the walking wheel assembly to rotate; a second motor configured to drive the auger to rotate about the first axis and drive the impeller to rotate about the second axis; a first reduction assembly including first-type gears for realizing power transmission between the second motor and the second drive shaft; and a second reduction assembly including second-type gears for realizing power transmission between the second drive shaft and the first drive shaft.