Self-lubricating Pinion with Impregnated Metal and Spring
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Solution Overview
Problem
Manual lubrication of pinions in rack-and-pinion systems is time-consuming, costly, and wasteful, especially when dealing with extended racks, as it requires manual application of grease to maintain smooth and low-noise rotational movement.
Innovation Solution
A self-lubricating transmission device with a pinion and rack system that incorporates a lubrication means with an impregnated outer shell and a compressive helical spring, which automatically supplies lubrication oil to the pin rollers during rotational movement, eliminating the need for manual lubrication and ensuring the right amount of lubrication is applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual lubrication is used with extended racks, then the pinion can be lubricated, but the lubrication work becomes laborious and time-consuming
Solution Approach 1:
The pinion automatically lubricates itself through the interaction between its rollers and the lubrication means during normal operation. The relative rotational movement between the pinion and rack activates the lubrication mechanism, eliminating the need for manual intervention and reducing lubrication maintenance time while ensuring continuous lubrication effectiveness.
Solution Approach 2:
The lubrication means is pre-positioned around the pinion's rotational path, with lubrication oil预先 distributed in the lubrication means. When the pinion rotates, it automatically picks up the lubrication oil without requiring advance manual application, thus saving time and labor.
2Reliability
If manual lubrication is performed frequently, then the pinion remains lubricated, but the work becomes costly and time-consuming
Solution Approach 1:
The system performs self-lubrication during normal operation, converting the pinion's rotational movement into automatic lubrication delivery. This eliminates the need for frequent manual lubrication interventions, thereby maintaining continuous lubrication while preserving operational efficiency and reducing maintenance costs.
Solution Approach 2:
The lubrication means ensures continuous lubrication supply throughout the pinion's rotation, rather than requiring periodic manual reapplication. The lubrication oil is continuously available and automatically applied, maintaining uninterrupted lubrication protection and eliminating downtime associated with manual maintenance.
3Reliability
If excessive grease is supplied to the pinion, then lubrication is ensured, but waste increases and cost rises
Solution Approach 1:
The lubrication means delivers lubrication oil precisely where it is needed - at the contact points between the pinion rollers and the rack teeth. The lubrication is locally applied to specific high-friction areas rather than being generously distributed throughout the entire pinion, thereby ensuring adequate lubrication while minimizing waste and reducing material costs.
Solution Approach 2:
Instead of applying excessive lubrication to the entire pinion, the system applies the precise amount of lubrication oil needed at the specific contact zones. The lubrication means is designed to supply only the necessary quantity for effective lubrication, avoiding over-lubrication and the associated waste and cost increases.
4Reliability
If manual lubrication is used, then the pinion can be lubricated, but the process is complex and requires manual intervention
Solution Approach 1:
The pinion system automatically performs its own lubrication through the interaction between the rotating pinion and the stationary lubrication means. During normal operation, the relative movement automatically activates the lubrication delivery mechanism, eliminating the need for manual intervention and simplifying operation while maintaining reliable lubrication function.
Solution Approach 2:
The lubrication system is designed to be dynamically activated by the pinion's rotational movement. As the pinion rotates, the lubrication means automatically engages and delivers lubrication oil, transforming the static lubrication application into a dynamic, self-activating process that requires no manual operation while ensuring reliable lubrication.
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 solution allows for automatic, efficient, and cost-effective lubrication of the pinion, reducing waste and labor required for lubrication, while maintaining smooth and quiet operation even with extended rack systems.
Implementation Method 1
an urging means which urges the lubrication means to slidably contact the pin rollers
Implementation Method 2
a compressive helical spring, which automatically supplies lubrication oil to the pin rollers during rotational movement
Implementation Method 3
the lubrication means supplies the lubrication oil to the pinion in combination with the rotational movement of the pinion
Data Source
AI summary
In a self-lubricating transmission device 1, a compression helical spring 15 is provided to urge an impregnation metal 14 as an impregnation means so as to slidably contact the impregnation metal 14 with pin rollers 7. In combination with a rotational movement of a pinion 6, the pin rollers 7 slide on a lower surface 14d of the impregnation metal 14 to supply a lubrication oil W to the pin rollers 7 so as to automatically lubricate the pinion 6 evenly at the right time for an appropriate amount of the lubrication oil W. This obviates the lubrication oil W being wastefully used, while at the same time, making a lubrication work quick, labor-saving and user-friendly.