Dual-Motor Snow Thrower Gear Drive for Compact Self-Propulsion
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Solution Overview
Problem
Self-propelled single-stage snow throwers have low snow removal efficiency due to complex machine structures and large sizes, primarily driven by belts.
Innovation Solution
A snow thrower design featuring a first drive shaft and an impeller with perpendicular axes, powered by two motors with reduction assemblies for efficient power transmission, along with a walking wheel assembly for mobility, enhancing snow removal efficiency and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If belt-driven transmission is used in self-propelled single-stage snow throwers, then the machine can achieve self-propelled movement, but the machine structure becomes complex and the size increases
Solution Approach 1:
The patent combines the self-propelled walking function and snow throwing function into a single integrated structure. The auger serves dual purposes: it throws snow while also driving the walking wheels through direct mechanical coupling. This merging eliminates the need for separate belt transmission systems, reducing structural complexity while maintaining self-propelled capability.
Solution Approach 2:
The auger is designed with multi-functionality, serving both as the snow throwing component and as the driving element for the walking mechanism. Through this universal design, one component performs multiple functions, eliminating the need for additional transmission belts and reducing overall machine complexity.
2Extent of automation
If belt-driven transmission is used in self-propelled single-stage snow throwers, then the machine can achieve self-propelled movement, but the snow removal efficiency decreases
Solution Approach 1:
The patent extracts and eliminates the belt transmission component from the system. By removing this intermediate transmission element, the design achieves direct power transmission from the auger to the walking wheels, reducing energy loss and improving snow removal efficiency while maintaining self-propelled movement.
3Device complexity
If traditional single-motor design is used, then the machine structure is simpler, but the snow removal efficiency and compactness are reduced
Solution Approach 1:
The patent segments the power transmission system into two independent motor-drive units: one motor drives the auger for snow throwing, while another motor drives the walking wheels for mobility. This segmentation allows each component to be optimized independently, improving overall snow removal efficiency and compactness without excessive structural complexity.
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 improves snow removal efficiency and reduces machine complexity, allowing for more effective and compact snow throwing performance.
Implementation Method 1
a first motor configured to drive the walking wheel assembly to rotate
Implementation Method 2
a second motor configured to drive the auger to rotate about the first axis and drive the impeller to rotate about the second axis
Implementation Method 3
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
Data Source
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 where the second axis and the first axis are perpendicular to each other, a walking wheel assembly, 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.