Cross-Connected Hydraulic Actuators for Roller Crusher Skew Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Roller crushers experience skewing issues due to uneven material distribution or varying material properties, leading to potential damage from unwanted contact between rollers and flanges, which complicates the use of flanged rollers.
Innovation Solution
A hydraulic system with synchronized main and crossing actuators that connect to movable bearing housings, ensuring synchronized movement and preventing skewing by operational coupling, allowing for flexible adaptation to various roller crushers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If independent actuators are used for each movable bearing housing, then the system can independently control each housing, but skewing occurs when material distribution is uneven
Solution Approach 1:
The patent combines the control of multiple independent actuators into a single synchronized actuator system. The first and second actuators are mechanically linked through a common piston rod and synchronization mechanism, ensuring that both movable bearing housings move simultaneously and remain parallel to each other, thus preventing skewing while maintaining independent control capability.
Solution Approach 2:
The synchronization mechanism incorporates feedback through the mechanical linkage between the actuators. The piston rod connects the first and second pistons, creating a feedback loop that automatically adjusts the movement of each actuator based on the other's position, ensuring consistent parallel movement and preventing skewing under varying material loads.
2Reliability
If flanged rollers are used, then sealing is improved, but skewing causes unwanted contact between roller and flange
Solution Approach 1:
The synchronization mechanism applies preliminary anti-action by preventing skewing before it can cause harmful contact between the roller and flange. The mechanical linkage between actuators ensures that the movable bearing housings remain parallel, eliminating the conditions that would lead to flange contact and sealing failure.
3Ease of operation
If complex hydraulic wiring is used to control independent actuators, then precise control is achieved, but maintenance becomes difficult
Solution Approach 1:
The patent merges the hydraulic wiring into a simplified configuration where a single synchronized actuator system controls both movable bearing housings. This reduces the number of separate hydraulic lines and control components, making the system easier to maintain while preserving precise control through the mechanical synchronization mechanism.
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 hydraulic system effectively prevents skewing, simplifies hydraulic wiring, and facilitates easier maintenance by synchronizing the movement of movable bearing housings, thus maintaining optimal crushing pressure and reducing the risk of damage.
Implementation Method 1
The hydraulic system biases the movable roller by delivering a force to the movable bearing housings of the movable roller
Implementation Method 2
the first compression chamber is fluidly connected to the second rebound chamber and the first rebound chamber is fluidly connected to the second compression chamber
Data Source
AI summary
A hydraulic system for a roller crusher comprising at least one first main actuator connectable to a first movable bearing housing of the roller crusher, at least one second main actuator connectable to a second movable bearing housing of the roller crusher, a first crossing actuator operationally coupled to the at least one first actuator, and a second crossing cylinder operationally coupled to the at least one second main actuator. A first compression chamber of the first crossing cylinder is fluidly connected to a second rebound chamber of the second crossing cylinder, and a first rebound chamber of the first crossing cylinder is fluidly connected to a second compression chamber of the second crossing cylinder.