Pivoting Trolley Arm for Cable-Rail Transition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing transportation systems with suspended transporting units face inefficiencies due to the need for different trolleys for cable and rail sections, as one trolley optimizes for wind absorption in mountainous areas but not for structural constraints in urban areas, and vice versa, leading to suboptimal comfort and structural stress.
Innovation Solution
A trolley with a pivoting suspending arm and a rotation limiting device that can be selectively activated or deactivated based on the section of the route, allowing free roll rotations in mountainous areas and limiting them in urban areas to enhance comfort and avoid structural interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a trolley is designed with free roll rotation to absorb wind forces in mountainous cable systems, then passenger comfort is improved, but structural constraints in urban rail sections are violated and interference with external structures occurs
Solution Approach 1:
The suspending arm is designed with selective rotatability, allowing it to rotate freely about the longitudinal axis in cable sections to absorb wind forces, while being capable of limiting or blocking this rotation in rail sections to avoid structural interference. This dynamic adjustment of the arm's rotational freedom resolves the contradiction between comfort and structural constraints.
Solution Approach 2:
The system changes the rotational parameter of the suspending arm based on the route section. In cable sections, the rotation angle is unrestricted to maximize wind absorption; in rail sections, the rotation is limited or blocked to prevent interference with external structures. This parameter change allows the same trolley to adapt to different environmental conditions.
2Object-affected harmful factors
If a trolley is designed with limited or blocked roll rotation to avoid structural interference in urban rail sections, then structural constraints are satisfied, but wind force absorption in mountainous cable sections is reduced
Solution Approach 1:
The suspending arm transitions from a blocked rotation state in rail sections to a free rotation state in cable sections, dynamically adapting to the operational requirements of each section. This allows the system to satisfy structural constraints where needed while maintaining wind force absorption capability where required.
Solution Approach 2:
The rotational parameter of the suspending arm is changed based on the route section: blocked or limited rotation in rail sections to satisfy structural constraints, and free rotation in cable sections to maximize wind force absorption. This parameter adaptation resolves the contradiction between constraint satisfaction and force absorption.
3Productivity
If separate trolleys are used for cable and rail sections to optimize for各自 conditions, then each section performs optimally, but system complexity increases and service interruptions occur during transitions
Solution Approach 1:
A single trolley design incorporates a suspending arm with selective rotatability that can function in both cable and rail sections. The arm can be configured to rotate freely in cable sections and be blocked in rail sections, allowing one universal trolley design to serve multiple functions across different route types without requiring separate specialized trolleys.
Solution Approach 2:
The suspending arm's rotational capability is dynamically adjusted based on the route section through selective blocking or unblocking mechanisms. This dynamic configuration allows a single trolley to adapt its behavior for optimal performance in different sections, eliminating the need for separate trolleys and avoiding service interruptions during transitions.
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
Enables seamless transition between cable and rail sections without service interruptions, improving travel comfort and reducing structural stress by adapting to different environmental conditions.
Implementation Method 1
the suspending arm being pivoting constrained to the frame about a longitudinal axis between a first and a second angular position
Implementation Method 2
rolls supported by the frame and configured for resting and sliding on the guide
Data Source
AI summary
A trolley for supporting transporting units of a transportation system, wherein the transporting units are supported suspended from a guide defining a direction of movement; the trolley comprising: a frame; rolls supported by the frame and configured for resting and rolling on the guide; a suspending arm for supporting the transporting units, wherein the suspending arm pivots constrained to the frame about the direction of movement between a first and a second angular position; a rotation limiting device selectively operable for limiting or blocking the rotation of the suspending arm with respect to the frame.