Vibratory Tamping Machine Vibration Decoupling Device
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Solution Overview
Problem
Existing vibratory tamping machines often compromise on ease of operation and reliability due to inefficient vibration decoupling, leading to increased hand-arm vibrations and complex mechanical connections.
Innovation Solution
A vibratory tamping machine design where the vibration mechanism and electric drive motor are positioned on a decoupling plane, separated from the handles by a vibration decoupling device, eliminating the need for mechanical drive shafts and using elastomer materials for damping, with a rechargeable battery and control device on the operating side to enhance vibration damping and simplify construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vibration mechanism and electric drive motor are arranged on the working side of the decoupling plane, then the hand-arm vibrations are significantly reduced and ease of operation is improved, but the device complexity increases due to the need for vibration decoupling device
Solution Approach 1:
The device is divided into two distinct sides (working side and operating side) separated by a decoupling plane. The vibration mechanism and motor are positioned on the working side while the handle is on the operating side, allowing independent optimization of vibration generation and vibration isolation functions.
Solution Approach 2:
A vibration decoupling device acts as an intermediary element between the working side (vibration source) and the operating side (handle). This intermediary absorbs and dampens vibrations, preventing them from reaching the handle while maintaining the mechanical connection for force transmission.
2Reliability
If no mechanical connection for driving the vibration mechanism leads through the decoupling plane, then hand-arm vibrations are reduced and reliability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The mechanical drive connection is extracted from the decoupling plane, eliminating the need for drive shafts to pass through this critical vibration isolation boundary. The motor and vibration mechanism are positioned such that their drive connections remain on the working side, avoiding interference with the decoupling function.
Solution Approach 2:
The patent replaces complex mechanical drive shafts that would need to pass through the decoupling plane with a direct motor-to-vibration-mechanism connection on the working side. This substitution eliminates the mechanical transmission elements that would compromise vibration isolation and reliability.
3Object-affected harmful factors
If the vibration decoupling device is configured to reduce hand-arm vibrations to below 5 m/s2, then operator comfort is improved, but the device complexity increases due to additional damping components
Solution Approach 1:
The vibration decoupling device is designed to change the vibration parameters (amplitude, frequency) by damping high-frequency vibrations generated by the motor and vibration mechanism. This parameter transformation reduces hand-arm vibrations to below 5 m/s2 while maintaining effective compaction function.
Solution Approach 2:
The vibrations generated by the motor and vibration mechanism, which would normally be harmful to the operator, are converted into beneficial damping action through the vibration decoupling device. The device uses the vibrations themselves to activate damping mechanisms that reduce overall vibration transmission to the handle.
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
Significantly reduces hand-arm vibrations, simplifies operation, and enhances reliability by decoupling vibrations, allowing the handles to vibrate undisturbed at their natural frequency while maintaining effective vibration damping and ease of maintenance.
Implementation Method 1
the vibration mechanism and the electric drive motor are arranged on a working side of a decoupling plane formed by the vibration decoupling device... the forces and/or vibrations generated by the electric drive motor and by the vibration mechanism are decoupled and/or damped by means of the vibration decoupling device
Implementation Method 2
The at least one vibration damper is resiliently configured so that vibration-decoupling and/or vibration-damping is achieved. Preferably, the at least one vibration damper comprises an elastomer material, in particular a rubber material.
Data Source
AI summary
A vibratory tamping machine for compacting a ballast bed of a track has a vibration mechanism which is driven by means of an electric drive motor. The vibratory tamping machine has a vibration decoupling device, which defines a decoupling plane and separates a working side from an operating side, for the vibration-decoupling of at least one handle. The handles are arranged on the operating side, whereas the electric drive motor and the vibration mechanism are arranged on the working side.