Movable Tool Differential With Auxiliary Drive Against Wheel Slip
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Solution Overview
Problem
Conventional moveable power tools experience wheel slip when a single power source fails to drive both left and right wheels due to unequal frictional forces, leading to instability in movement transfer.
Innovation Solution
A differential mechanism with a main and auxiliary input end that ensures continuous power input to the output component, even if the main input fails, by engaging the auxiliary input to maintain rotation, reducing slippage and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power source is used to drive both left and right wheels, then the device structure is simple, but wheel slip occurs when frictional forces are unequal
Solution Approach 1:
The single power source is segmented into two independent input paths: a main input end and an auxiliary input end. Each input end can independently transmit power to the output component through separate transmission components, allowing the system to function even when one path fails or encounters high friction, thus preventing wheel slip while maintaining structural simplicity.
Solution Approach 2:
The auxiliary input end is designed as a backup power transmission path that engages when the main input end fails or when wheel slip is detected. This beforehand cushioning ensures continuous power transmission to prevent wheel slip, improving reliability without requiring a completely redundant system.
2Reliability
If the main input end and output component engagement fails, then power transmission is interrupted, but adding an auxiliary input end increases device complexity
Solution Approach 1:
The main input end and auxiliary input end are merged into a single integrated input mechanism that rotates as an integral whole around the axis. Both input ends share common structural elements and mounting arrangements, allowing the system to provide redundant power transmission paths while minimizing the increase in device complexity through shared components and compact arrangement.
3Reliability
If gear meshing fails between main input end and output component, then movement input is lost, but increasing engagement points increases structural complexity
Solution Approach 1:
Transmission components are introduced as intermediary elements between the input ends and the output component. These intermediaries facilitate power transmission through multiple engagement points while maintaining a compact and organized structural arrangement, reducing the complexity that would otherwise result from direct multi-point engagement.
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 differential mechanism guarantees effective and stable movement transfer by ensuring continuous power input, minimizing wheel slip and improving overall operational stability.
Implementation Method 1
an elastic member is provided at the axial displacement gap, and, when the meshing of the output gear and the input mechanism fails, the output gear squeezes the elastic member so that the first transmission component engages with the second transmission component under an elastic force of the elastic member
Data Source
AI summary
The present invention provides a differential and a moveable power tool that has this differential. The differential comprises an input mechanism, an output gear, a first transmission component and a second transmission component. The input mechanism comprises a main input end and an auxiliary input end. When meshing of the output gear and a main input mechanism fails, the first transmission component and the second transmission component engage, and the second transmission component in said engaged state drives the first transmission component to rotate in a predetermined direction, so that the auxiliary input end inputs movement to the output gear. The differential provided by the present invention can guarantee the effectiveness and stability of movement transfer, and reduces the occurrence of slippage.