Counterweight Moving Platform for Vibration-Stable Gantry Motion
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Solution Overview
Problem
Current gantry-type moving platforms experience vibrations due to impulse generation during acceleration and deceleration, which are not effectively mitigated by existing damping designs or increased structural rigidity.
Innovation Solution
A moving platform design featuring sliding blocks and weight blocks that move in opposite directions to offset the forces and vibrations, utilizing a control mechanism to balance the driving forces and reaction forces, thereby reducing vibrations and maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If damping design is used in the moving platform architecture, then vibration is reduced, but the stabilizing effect reaches an upper limit and cannot be effectively improved
Solution Approach 1:
The patent introduces counterweight blocks that generate counter-forces to offset the impulse forces generated during acceleration and deceleration. These counterweight blocks are positioned and controlled to create forces that balance the harmful impulses, thereby reducing vibration and improving system stability beyond what damping alone can achieve.
Solution Approach 2:
The control system calculates required counter-forces based on detected acceleration and position, and activates the counterweight blocks before the harmful impulse fully impacts the system. This preliminary counter-action neutralizes the vibration-causing forces during critical motion transitions.
2Reliability
If structural rigidity and overall weight are enhanced, then stability is improved, but the system becomes heavier and more complex
Solution Approach 1:
Instead of increasing overall structural weight for stability, the patent uses strategically positioned counterweight blocks that generate balancing forces. This dynamic counterweight approach provides stability enhancement without the penalty of increased overall platform weight and inertia.
Solution Approach 2:
The patent transitions from static structural reinforcement to dynamic force balancing. The counterweight blocks are actively controlled to move and generate forces that adapt to real-time motion conditions, providing stability through dynamic adjustment rather than static weight increase.
3Productivity
If motion speed is increased, then productivity is improved, but acceleration and deceleration generate higher impulses and vibrations
Solution Approach 1:
The control system detects acceleration and position to calculate required counter-forces before high-speed motion transitions occur. The counterweight blocks are activated in advance to neutralize the impulse forces that would otherwise be generated during high-speed acceleration and deceleration, enabling higher productivity without increased vibration.
Solution Approach 2:
The system uses sensors to detect acceleration and position in real-time, feeds this information to the control system, which then adjusts the counterweight block forces accordingly. This closed-loop feedback enables the system to maintain stability even at higher motion speeds by continuously compensating for generated impulses.
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 design effectively reduces vibrations and maintains stability, allowing for increased movement speed and reduced changes in the overall center of gravity.
Implementation Method 1
When the X-axis moves forward and backward and accelerates and decelerates, an impulse is generated on the moving platform. This energy must be offset on the structure of the moving platform, and this is the source of vibration kinetic energy.
Implementation Method 2
The two sliding blocks and the two weight blocks are configured to move in opposite directions in the first direction and the second direction
Data Source
AI summary
A moving platform includes two sliding seats, two sliding blocks, a carrying member, and two weight blocks. The two sliding seats extend along a first axis and are arranged in a second axis. The two sliding blocks are respectively slidably disposed at two inner sides of the two sliding seats to move along the first axis. The carrying member is connected between the two sliding blocks. The two weight blocks are slidably disposed at two outer sides of the two sliding seats to move along the first axis. The two sliding blocks and the two weight blocks are configured to move in opposite directions along the first axis.