External Cable Protection for Electric Traction Drive Machines
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Solution Overview
Problem
Existing electrically powered tracked machinery faces challenges in optimizing the routing of motor cables, which are typically protected within the undercarriage's steel structure, leading to non-optimized transmission length and complex assembly/disassembly of crawler tracks.
Innovation Solution
The motor cables are routed externally within a separate protective device that extends outside the undercarriage's central section and track carrier, providing mechanical protection and flexibility, allowing easy access and adaptation to machine configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If motor cables are routed through the steel structure of the undercarriage, then mechanical protection is provided, but cable length is increased and assembly/disassembly becomes complex
Solution Approach 1:
The patent extracts the motor cables from the steel structure routing and places them in a separate protective device that runs externally along the longitudinal axis of the crawler track. This separation allows the cables to be protected mechanically while reducing their length by eliminating unnecessary routing through the undercarriage structure.
Solution Approach 2:
The patent segments the cable routing system into a dedicated protective device separate from the undercarriage steel structure. This segmentation allows independent optimization of the cable routing path while maintaining mechanical protection, resolving the contradiction between protection and length optimization.
2Reliability
If motor cables are routed through the steel structure of the undercarriage, then mechanical protection is provided, but assembly and disassembly of crawler tracks becomes complex
Solution Approach 1:
By extracting the motor cables from the steel structure and placing them in a separate protective device with external routing, the patent enables easier access to the cables during assembly and disassembly operations, directly improving ease of operation while maintaining mechanical protection.
Solution Approach 2:
The segmentation of cable routing into a separate protective device allows the cables to be accessed and disconnected independently from the undercarriage structure, simplifying crawler track assembly and disassembly procedures.
3Length of moving object
If motor cables are routed externally in a separate protective device, then cable length is reduced and accessibility is improved, but mechanical protection must be ensured
Solution Approach 1:
The patent introduces a separate protective device as an intermediary structure that houses the motor cables externally. This protective device serves as a mediator between the cables and the harsh external environment, providing mechanical protection while allowing the cables to be routed directly and maintain short length.
Data Source
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AI summary
The present invention relates to a work machine, in particular a cable excavator, with an undercarriage comprising a central section and at least one crawler track connected to the central section, the crawler track having at least one electric drive unit, wherein at least one power transmission line for supplying power to the drive unit and at least one further supply line run between the drive unit and the central section. The work machine is characterized in that the at least one power supply line and the at least one further supply line run together in a separate protective device outside of the central section and the crawler track.