Direct-Drive Snow Thrower Transmission Without Belt Losses
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Solution Overview
Problem
Conventional engine-powered snow throwers face issues with belt transmission, which requires frequent maintenance, is prone to dimensional errors, and leads to reduced efficiency and power output due to belt deformation and aging.
Innovation Solution
A snow thrower design that uses a first motor to directly drive the snow removal system, eliminating belts and gears for power transmission, with the output shaft of the motor connected directly to the transmission shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If belt transmission is used to transmit power from the engine/motor to the snow throwing impeller and auger, then the power transmission system is simple to manufacture and assemble, but the belt is prone to dimensional errors, deformation, aging, and requires frequent maintenance and replacement
Solution Approach 1:
The patent removes the belt transmission component from the power transmission system, directly connecting the motor output shaft to the transmission shaft. This extraction of the problematic belt element eliminates dimensional errors, deformation, and aging issues while maintaining manufacturing simplicity through direct coupling.
Solution Approach 2:
The patent replaces the mechanical belt transmission system with a direct mechanical connection (coupling) between the motor output shaft and transmission shaft. This substitution eliminates the intermediate belt element that causes reliability issues while preserving the mechanical power transmission function.
2Device complexity
If belt transmission is used to transmit power, then the device structure is simple, but the belt deformation and aging cause relaxation in tension and reduce transmission efficiency and power output
Solution Approach 1:
By removing the belt from the transmission system, the patent eliminates energy losses associated with belt slip, deformation, and tension relaxation. The direct coupling between motor and transmission shaft ensures efficient power transmission without the energy dissipation problems of belt-driven systems.
Solution Approach 2:
The patent substitutes the inefficient belt transmission mechanism with a direct mechanical coupling, eliminating the intermediate transmission elements that cause energy loss. This substitution maintains structural simplicity while dramatically improving transmission efficiency.
3Ease of operation
If belt transmission is used, then the power system is easy to assemble, but the belt requires replacement and maintenance after long use, which is very inconvenient
Solution Approach 1:
The patent extracts the belt component from the transmission system, eliminating the need for periodic maintenance, tension adjustments, and replacements. The direct coupling design requires no intermediate elements that degrade over time, thereby eliminating maintenance-related time losses.
Solution Approach 2:
The patent replaces the maintenance-intensive belt transmission system with a permanent direct mechanical coupling. This substitution eliminates the operational downtime and maintenance activities required for belt systems, significantly improving ease of operation over the product lifecycle.
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
This design enhances energy efficiency, reduces maintenance needs, and improves transmission efficiency while maintaining performance comparable to gasoline engine models.
Implementation Method 1
The power system includes a first motor. An output shaft of the first motor is connected with the transmission shaft directly, so that when the first motor rotates, power is transmitted to the transmission shaft through the output shaft
Data Source
AI summary
A snow thrower is provided and includes: a snow removal system and a power system configured to drive the snow removal system to work. The power system includes a first motor. The snow removal system includes a transmission shaft, an auger assembly in transmission connection with the transmission shaft, and a snow throwing impeller mounted to the transmission shaft. An output shaft of the first motor is connected with the transmission shaft directly, so that when the first motor rotates, power is transmitted to the transmission shaft through the output shaft, so as to drive the auger assembly to rotate.