Excavator Upper Swing Body Free-Swing Control During Load Lifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing excavator systems face challenges in reducing energy consumption and ensuring safety during load lifting operations, as they require significant operator attention and can lead to accidents due to unexpected movements of heavy loads.
Innovation Solution
A system that enables the upper swing body of an excavator to swing freely in response to applied forces, utilizing a controller connected to sensors and a swing motor to detect and adjust forces, thereby aligning the swing body with the load and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the boom is operated in an unsuitable position to lift a heavy object, then the lifting operation can be performed, but the heavy object may move in an unexpected manner causing safety risks
Solution Approach 1:
The system continuously detects forces applied to the working device and uses this feedback to automatically adjust the upper swing body position, ensuring the boom remains in the appropriate position for safe lifting operations without requiring constant operator intervention
Solution Approach 2:
The system enables the upper swing body to swing freely in response to applied forces, allowing the equipment to self-adjust and align with the load automatically, reducing the need for operator intervention and minimizing unexpected movements
2Manufacturing precision
If multiple precise swinging operations are performed to lift an object vertically, then the object can be correctly aligned, but the operator must concentrate for an extended period of time increasing fatigue risk
Solution Approach 1:
The system allows the upper swing body to swing freely in response to forces applied during lifting, enabling automatic alignment with the load without requiring the operator to perform multiple precise swinging operations, thereby reducing operator fatigue and concentration time
3Use of energy by moving object
If the upper swing body swings freely in response to force, then energy consumption is reduced, but control over the swing body becomes more challenging
Solution Approach 1:
The controller detects forces applied to the working device and uses this information to generate control signals that deactivate the swing motor and control the swing brake, enabling free swinging while maintaining a level of automated control that prevents complete loss of operational control
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 improves safety by reducing the risk of accidents and energy wastage by allowing the excavator to swing freely and align with the load, thereby optimizing energy use during operations.
Implementation Method 1
a swing motor connected to the power unit to swing the upper swing body
Implementation Method 2
a swing brake controlling the swinging of the swing motor
Implementation Method 3
an electric proportional valve connected to the hydraulic pump to control free swinging of the swing motor
Implementation Method 4
sensors detecting magnitudes and directions of forces applied to the working device and transmitting detected data to the controller
Data Source
AI summary
A system for enabling an upper swing body of construction equipment to swing freely. A working device is attached to the upper swing body to lift and move an object. A swing motor is connected to a power unit to swing the upper swing body. A controller is electrically connected to the working device and the swing motor to detect forces applied to the working device, and based on the detected forces, generating a control signal to control the swing motor so that the upper swing body swings freely. The system enables the upper swing body to swing freely to reduce energy consumption while ensuring safety when the upper swing body lifts a load.