Tamping Assembly Kinematic Joints for Compact Mass Balance
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Solution Overview
Problem
Existing tamping units face challenges in achieving a compact design with low load on components and good mass balance, while allowing for independent height adjustment of individual tamping tools and efficient tamping of adjacent sleepers.
Innovation Solution
The design incorporates a kinematic system where each transmission element is connected to the tamping tool via a first joint and to an auxiliary drive via a second joint, with an optional third joint connecting to the vibration drive, forming a compact arrangement that minimizes angular connections and balances moving masses, using eccentric drives for vibration and hydraulic cylinders oriented vertically for slim design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If transmission elements are connected rigidly to vibration drives, then structural simplicity is improved, but adaptability in positioning and mass balance deteriorates
Solution Approach 1:
The patent employs joints with adjustable degrees of freedom that allow the transmission elements to change their positional parameters dynamically. This enables the system to adapt to different operational conditions while maintaining structural simplicity through standardized joint designs.
Solution Approach 2:
The transmission elements are designed with dynamic positioning capabilities through articulated joints, allowing them to adjust their configuration during operation. This dynamic adaptability optimizes mass balance and positioning without requiring complex rigid structures.
2Volume of moving object
If auxiliary drives are arranged in a staggered configuration, then compact design is improved, but load distribution and mass balance deteriorate
Solution Approach 1:
The patent utilizes an asymmetric arrangement of transmission elements and auxiliary drives that, while compact, is carefully balanced to achieve symmetric load distribution. The asymmetric positioning allows compact packaging while the counterbalancing design ensures uniform force distribution across the tamping tools.
3Measurement precision
If multiple joints are used in transmission elements, then positioning precision is improved, but device complexity deteriorates
Solution Approach 1:
The transmission elements are segmented into multiple jointed sections, each contributing to the overall positioning precision. This segmentation allows the system to achieve high positioning accuracy through the cumulative effect of multiple controlled degrees of freedom while keeping each individual joint simple and manageable.
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 results in a compact, low-load tamping unit with balanced mass distribution, enabling efficient tamping of adjacent sleepers and flexibility for turnouts and crossings, with reduced vibration stress and energy-efficient operation.
Implementation Method 1
the vibratory drive is designed as an eccentric drive
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a tamping assembly (1) for tamping sleepers (7) of a track, comprising a tamping unit (4) having oppositely located tamping tools (9) which are pivotally mounted on a vertically adjustable tool carrier (5), wherein each tamping tool (9) is coupled to a vibration drive (21) via a transmission element (17). Here, the relevant transmission element (17) is connected via a first joint (16) to the associated tamping tool (9) and via a second joint (18) to a squeeze drive (19) which is supported on the same tamping tool (9). This construction allows for a space-saving arrangement of the squeeze drives (19), which results in a compact design.