Tamping Unit Drive Unit Vibration Cancellation
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Solution Overview
Problem
Existing tamping units for track sleepers experience significant vibratory stress on the assembly frame, which can hinder the effective operation of tamping tines.
Innovation Solution
The connection of two squeezing cylinders to form a rigid structural unit, with coaxial cylinder axes and a centrally positioned sliding bearing, allows the vibrations produced by the vibration exciter to largely cancel each other out, ensuring a problem-free squeezing motion of the tamping tines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If two squeezing cylinders are used to drive the tamping tines, then the squeezing force is improved, but the vibratory stress on the assembly frame increases
Solution Approach 1:
The two squeezing cylinders are connected to form a rigid structural unit (drive unit) with coaxial cylinder axes. This merging of the two drive systems allows the vibrations from both cylinders to cancel each other out, reducing the harmful vibratory stress on the assembly frame while maintaining the necessary squeezing force for ballast consolidation.
Solution Approach 2:
The patent applies the counterweight principle by positioning the two squeezing cylinders coaxially and connecting them through a rigid structural unit. The vibrations generated by one cylinder act as a counterbalance to the other, creating a balancing effect that reduces the net vibratory stress transmitted to the assembly frame.
2Object-affected harmful factors
If the squeezing cylinders are connected rigidly, then the vibration cancellation is improved, but the adaptability to vertical position adjustments decreases
Solution Approach 1:
The patent combines rigid and flexible elements in the drive system. The squeezing cylinders are rigidly connected to each other for vibration cancellation, but the entire drive unit is vertically adjustable relative to the tine carrier through a slide bearing. This dynamic adjustment capability allows the system to adapt to different vertical positions while maintaining the rigid connection necessary for vibration cancellation.
Solution Approach 2:
The slide bearing acts as an intermediary element between the rigid drive unit and the tine carrier. It allows vertical movement and position adjustment while transmitting the squeezing forces, thereby mediating between the rigid connection needed for vibration cancellation and the need for vertical adaptability.
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
This configuration reduces vibratory stress on the assembly frame, enabling smoother and more efficient operation of the tamping tines by canceling out vibrations, thus facilitating better ballast consolidation.
Implementation Method 1
the vibrations of the two squeezing cylinders produced by the vibration exciter largely cancel out one another
Data Source
AI summary
Two squeezing drives, each connected via a joint to a tamping tine of a tamping unit, are connected to one another—unchangeably with regard to their position relative one another—to form a drive unit. The latter has a sliding bearing, situated between the two joints, which is freely movable in vertical direction in a bearing guide connected to the tine carrier.