Independent Haul Cable Control for Cable Transport Vehicles
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Solution Overview
Problem
Existing cable transportation systems require both haul cables to be stationary during the stop phase, limiting operational flexibility and efficiency.
Innovation Solution
A cable transportation system with independently operable haul cables and a locking device that allows the vehicle to be held stationary at a passenger station, enabling one or both cables to be freely operated, using control cams and actuators to manage clamping and locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both haul cables are kept stationary during the stop phase, then the vehicle can be stopped at the passenger station, but the operational flexibility and efficiency of the cable transportation system deteriorates
Solution Approach 1:
The system divides the haul cable function into two independent cables (first and second haul cables), each capable of independent operation. This segmentation allows one cable to remain stationary while the other continues moving, enabling the vehicle to stop at the station without halting the entire system, thus resolving the contradiction between stopping capability and operational flexibility
Solution Approach 2:
The system dynamically adjusts the operational state of each haul cable independently. During the stop phase, the first haul cable can be kept stationary while the second haul cable continues to move, or both can move simultaneously. This dynamic control allows the system to adapt between ensuring vehicle stopping and maintaining operational flexibility based on real-time requirements
2Reliability
If both haul cables are kept stationary during the stop phase, then the vehicle can be securely held, but the system complexity increases due to coordinated control requirements
Solution Approach 1:
The control system is segmented into independent controllers for each haul cable. Each cable can be controlled independently to be stationary or moving, eliminating the need for complex coordinated control of both cables simultaneously. This reduces system complexity while maintaining the ability to hold the vehicle securely through independent cable control
Solution Approach 2:
Each haul cable system serves itself independently during operation. The first and second haul cables can operate autonomously without requiring synchronized control, with each cable's motor and control mechanism managing its own state. This self-service approach simplifies the overall control architecture while ensuring reliable vehicle holding
Data Source
AI summary
A cable transportation system extends along a track and has two haul cables driven respectively by respective motors and having respective mutually aligned end portions; a vehicle with two clamping devices configured to attach the vehicle to the haul cables; a passenger station at the end sections of the haul cables; two control cams arranged respectively at the end sections of the haul cables; and two actuators configured to bring the control cams into an operating position to open the clamping devices and into a resting position in which they do not interfere with the clamping devices, the control cams being spaced apart by a distance equal to the distance between the clamping devices in such a way that when the clamping device is at the control cam, the clamping device is at the control cam.