Independent Rail Wheel Set for Low-Friction Direction Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rail wheel systems for factory transport cars are costly and inefficient, particularly when changing direction, as they require expensive cross-running gears, rotatable wheel sets, and turntable switches, and suffer from increased friction during curved travel due to concave rail surfaces.
Innovation Solution
A rail wheel set with two rotatably mounted running wheels, each having a rail rolling surface and a ground rolling surface, allowing independent rolling and enabling direction change without additional rail intersections, with wheels angled to reduce friction and facilitate easy rotation on flat surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-running gears are attached to change direction, then direction change capability is improved, but device complexity and installation cost increase
Solution Approach 1:
The wheelset is divided into two independently rotatable running wheels mounted on a common bearing housing, allowing each wheel to rotate independently about its own axis while the entire assembly can be rotated about a vertical axis for direction changing
Solution Approach 2:
The running wheels are designed to be rotatable about their respective rotation axes, enabling dynamic adaptation to curved rail sections where the inner wheel rotates slower than the outer wheel, while the bearing housing allows rotation about a vertical axis for direction changes
2Adaptability or versatility
If rotatable wheel sets with turntable switches are used, then direction change capability is improved, but installation effort and cost increase
Solution Approach 1:
The bearing housing serves multiple functions: it connects the two running wheels to the car, allows rotation of each wheel about its axis, and enables rotation of the entire wheelset about a vertical axis for direction changes, eliminating the need for separate turntable switches
Solution Approach 2:
The wheelset is segmented into two independently rotatable running wheels on a common bearing housing, allowing simple rotation about vertical axis without complex turntable infrastructure
3Adaptability or versatility
If rotatable switches are installed in floor, then direction change capability is improved, but maintenance difficulty increases due to dirt accumulation
Solution Approach 1:
Instead of installing rotatable switches in the floor, the invention inverts the approach by enabling the wheelset itself to rotate about a vertical axis through the bearing housing, eliminating floor-level rotatable components that accumulate dirt
4Adaptability or versatility
If car is lifted to change direction, then direction change capability is improved, but operational complexity increases
Solution Approach 1:
The bearing housing allows the entire wheelset to rotate about a vertical axis while remaining on the rail, enabling direction changes without lifting the car or requiring height changes
5Stability of the object's composition
If integral rail wheels with concave rolling surfaces are used, then rail contact stability is improved, but friction increases during curved travel
Solution Approach 1:
The integral rail wheel is segmented into two separate running wheels that can rotate independently, allowing the inner wheel to rotate slower than the outer wheel on curved sections, reducing the pressure ellipse effect and friction while maintaining stable rail contact
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 design reduces installation costs, minimizes friction, and allows smooth, low-effort direction changes by enabling wheels to roll independently on curved rails and rotate on flat surfaces, reducing the need for expensive infrastructure and improving transport efficiency.
Implementation Method 1
the running wheels can roll independently of each other on the running surface of the rail
Data Source
AI summary
A rail wheel set for a car which can be moved on a rail of a rail system has a bearing housing with a radial suspension for connecting the rail wheel set to the car, and two running wheels which are rotatably mounted on the bearing housing. Each wheel has a respective rail rolling surface, the shape of which is adapted to the contour of a running surface of the rail, and a respective ground rolling surface. The wheels can roll independently of each other on the running surface of the rail or on the ground. The rail wheel set is secured to a chassis of a car for transporting objects on a rail system.