Gyratory Crusher Thrust Bearing Lubrication System
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Solution Overview
Problem
Gyratory crushers face inadequate lubrication during tramp releases, leading to increased friction losses and potential overheating of the thrust bearing due to insufficient lubrication during sudden surface force application.
Innovation Solution
A lubrication system comprising a piston and cylinder with interconnected fluid channels and a pump to dynamically adjust fluid distribution, ensuring continuous lubrication to the thrust bearing, especially during downward movements caused by tramp releases, by transferring fluid from a second space to a first space via multiple channels and additional fluid supply means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple hollow piston structure is used for lubrication, then the device complexity is reduced, but the reliability of lubrication during tramp releases deteriorates
Solution Approach 1:
The piston is divided into multiple functional spaces (first space for continuous lubrication, second space for fluid storage and tramp release response) with multiple channels connecting them. This segmentation allows each space to handle specific lubrication needs, ensuring reliable lubrication during both normal operation and tramp releases while maintaining a manageable structural complexity.
2Reliability
If lubrication fluid is continuously supplied to the thrust bearing, then the reliability of lubrication is improved, but the loss of energy increases due to continuous pumping
Solution Approach 1:
The system uses periodic action by utilizing the natural pressure fluctuations in the second space during piston movement. During downward piston movement (tramp release), pressure increases and automatically forces fluid through channels to the first space and thrust bearing. This eliminates the need for continuous pumping while maintaining reliable lubrication, thereby reducing energy loss.
3Reliability
If additional fluid transfer means are added to supply fluid during tramp releases, then the reliability of lubrication is improved, but the device complexity increases
Solution Approach 1:
The system implements self-service by using the piston's own movement and the resulting pressure changes in the second space to automatically transfer fluid to the first space during tramp releases. The interconnected channels enable the system to self-regulate fluid distribution based on operating conditions without requiring external pumps or complex control mechanisms, thus maintaining reliability while minimizing added 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 system effectively mitigates the risk of thrust bearing overheating and wear by ensuring adequate lubrication during tramp releases, thereby extending the crusher's lifetime and enhancing operational safety.
Implementation Method 1
the system is configured to in response to the pressure rising in the second space to conduct fluid from the second space to the first space
Data Source
AI summary
A mineral material processing plant, a crusher, a lubrication method and system, the system including a thrust bearing, a lubrication piston and adjusting piston arranged to be movable in a cylinder. The piston includes a first space configured to receive fluid and to continuously conduct the fluid to the thrust bearing. The cylinder and the piston define therebetween a second space configured to receive and hold fluid. The system is configured to, in response to detecting a downward movement of the piston, conduct fluid to the first space.