Track Chain Pin-Bushing Greasing With Uniform Lubricant Spreading
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Solution Overview
Problem
Current lubrication methods for track chain assemblies in construction machinery fail to ensure even distribution of grease on pin and bushing components, leading to premature wear and potential disengagement due to insufficient or excessive lubrication.
Innovation Solution
An automated greasing machine with self-centering grippers and a grease dispenser applies and evenly spreads lubricant on the pin before assembly, ensuring consistent lubrication and preventing excess grease from reaching undesired areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If current manual greasing methods are used, then the process is simple and quick, but the grease distribution on pin and bushing is uneven leading to premature wear
Solution Approach 1:
A grease distribution plate is introduced as an intermediary tool between the grease applicator and the pin-bushing assembly. The plate receives grease from the applicator and distributes it uniformly across the pin and bushing surfaces through its geometry and movement, ensuring even coverage without requiring complex automated control systems
Solution Approach 2:
The grease distribution plate utilizes its own movement and geometry to automatically distribute grease evenly. As the plate moves into position and makes contact with the pin and bushing, its shape and motion inherently ensure uniform grease distribution without requiring additional sensors, actuators, or control mechanisms
2Reliability
If excessive grease is applied to ensure sufficient lubrication, then lubrication coverage is improved, but grease extends beyond the pin into undesired areas causing link disengagement
Solution Approach 1:
The grease distribution plate is designed with specific geometric features that concentrate and direct grease application precisely where needed on the pin and bushing surfaces. The plate's shape creates localized grease distribution zones that ensure adequate lubrication at the contact interfaces while preventing grease from spreading to adjacent areas that could cause link disengagement
3Manufacturing precision
If manual greasing is performed, then the equipment cost is low, but the durability and longevity of track chain assembly is reduced due to insufficient or excessive greasing
Solution Approach 1:
The grease distribution plate serves as a simple mechanical intermediary that transforms manual or basic automated grease application into a controlled, precise distribution process. The plate's physical geometry and movement pattern provide the necessary control for accurate grease placement without requiring complex manufacturing or sophisticated control systems
Solution Approach 2:
The system controls grease application by changing physical parameters such as the plate's position, orientation, and movement speed rather than relying on complex electronic controls. These parameter changes enable precise grease distribution and prevent both insufficient and excessive application while keeping the system simple to manufacture
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 ensures even lubrication, reducing premature wear and disengagement, thereby increasing the durability and longevity of track chain assemblies and minimizing field failures.
Implementation Method 1
inserting a pin into a first self-centering gripper, inserting a bushing into a second self-centering gripper opposite the first self-centering gripper
Implementation Method 2
applying grease to the pin, evenly spreading the grease on the surface of the pin which is to be inserted into the bushing
Implementation Method 3
using a plate, and inserting the pin into the bushing
Implementation Method 4
The first and/or second self-centering grippers are configured to be moveable in a horizontal direction such that a pin held by the first self-centering gripper may be inserted into the bushing
Data Source
Figure 1
Figure 2a~2c
Figure 3a~3c
AI summary
A method, and an automated greasing machine (100), for greasing and assembling a track chain pin and bushing, comprising the steps of, inserting a pin (20) into a first self-centering gripper (50), inserting a bushing (10) into a second self-centering gripper (60) opposite the first self-centering gripper (50), applying grease to the pin (20), evenly spreading the grease on the surface of the pin (20) which is to be inserted into the bushing (10), using a plate, inserting the pin (20) into the bushing (10).