Underground Mining Plow Traction Carriage Damping
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Solution Overview
Problem
Existing traction carriages for underground mining plows lack effective damping mechanisms, leading to inefficient force transmission and increased wear between stop surfaces and counterstop surfaces, especially under high impact loads.
Innovation Solution
A low-maintenance damping system is integrated between the stop surfaces and the coupling piece, allowing for relative movement and maintaining a complete contact area, with damping plungers and disk springs generating restoring forces up to 500 kN, and a multipart design extending damping travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a damping device with projecting rod ends is used, then damping force can be generated, but the contact area between stop surfaces is reduced and wear increases
Solution Approach 1:
The damping system is nested completely between the stop surfaces, with the rod contained within the carriage body rather than projecting beyond the stop surfaces. This nesting arrangement maintains full contact area between stop surfaces while generating damping force through the internal damping elements.
Solution Approach 2:
The damping system acts as an intermediary between the stop surfaces, providing damping force through internal mechanisms (damping elements, springs, dampers) without requiring the rod ends to project beyond the stop surfaces. This intermediary approach preserves the complete contact area while achieving the desired damping effect.
2Area of stationary object
If the damping system is arranged completely between the stop surfaces, then complete contact area is maintained, but the damping travel is limited
Solution Approach 1:
The damping travel is extended by utilizing the vertical dimension between the stop surfaces. The rod can move vertically within the carriage body, and the damping elements are arranged to provide damping force over an extended travel distance in this dimension, thereby achieving longer damping travel without projecting beyond the stop surfaces.
Solution Approach 2:
The damping system is designed with dynamic components that can accommodate extended travel. The rod, damping elements, and receiving body are arranged to allow greater relative movement between parts, enabling extended damping travel while maintaining complete contact area between stop surfaces through the dynamic adjustment of internal components.
3Force
If the rod projects beyond stop surfaces, then damping force can be generated, but the device complexity increases due to additional external components
Solution Approach 1:
The damping system is merged with the carriage body structure, with the rod, damping elements, and receiving body integrated into the internal volume of the carriage body. This merging eliminates the need for separate external damping components and simplifies the overall device structure while maintaining the damping force generation capability.
Solution Approach 2:
The carriage body serves multiple functions: it provides structural support, guides the rod movement, contains the damping elements, and maintains the stop surfaces. This multi-functionality reduces the need for separate dedicated damping components, thereby reducing device complexity while still generating the required damping force.
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 solution provides improved force transmission and reduced wear by maintaining a complete contact area and extending damping travel, effectively managing high impact loads and alternating forces.
Implementation Method 1
whose length is greater than the spacing of the stop surfaces from one another, wherein the rod in each case has a fixed stop for a disk spring assembly by means of which a restoring force is generated
Implementation Method 2
a damping device having a damping action in both directions of travel is integrated into the front part of the traction carriage
Data Source
AI summary
A traction carriage for an underground mining plow, comprising a traction carriage body which can be inserted into a cavity in a plow body and which on the rear side of a guide recess has a front part whose ends pointing in the direction of travel form stop surfaces for interacting with counterstop surfaces in the cavity of the plow body. According to the invention, a damping device having a damping action in both directions of travel is integrated into the front part of the traction carriage. In order to provide a low-maintenance damping device which allows a more favorable transmission of force between the stop surface on the traction carriage and the counterstop surface on the plow body, the coupling piece can be moved relative to the stop surfaces counter to the restoring force of a damping system of the damping device that is arranged between the stop surfaces.