Tire Ground State Measurement Device with Below-Surface Tensioning
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Solution Overview
Problem
Existing tire ground state measuring devices are bulky due to the need for a protection sheet that is longer than the tire traveling surface and a backward and forward tensile force application mechanism that interferes with tire travel, necessitating a compact design that prevents interference and maintains protection sheet integrity.
Innovation Solution
A device with a traveling surface, a tire drive unit, a measuring sheet, a protection sheet, and a backward and forward tensile force application mechanism where the protection sheet is routed below the traveling surface and pulled from underneath, with an upper lid to close the space and prevent interference, allowing the mechanism to apply tension without obstructing tire travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protection sheet is made longer than the tire traveling surface and the backward and forward tensile force application mechanism is arranged on the outer side, then the protection sheet can be protected from shear force and the tire can travel freely, but the device is enlarged in the tire forward traveling direction
Solution Approach 1:
The patent moves the tensile force application mechanism from a horizontal arrangement (outside the traveling surface) to a vertical arrangement (below the traveling surface). The space 6 conducts the protection sheet 4 to a portion below the traveling surface 1, allowing the mechanism to apply tension in the vertical dimension while keeping the horizontal footprint compact. This dimensional transition resolves the contradiction by maintaining protection sheet integrity through vertical tension application without enlarging the device in the horizontal traveling direction.
2Ease of operation
If the backward and forward tensile force application mechanism is arranged on the outer side of the tire traveling surface, then the mechanism can apply tensile force to the protection sheet, but the mechanism forms an obstacle to the tire forward traveling
Solution Approach 1:
The patent extracts the tensile force application mechanism from the horizontal plane (outside the traveling surface) and relocates it to the vertical space below the traveling surface. The space 6 conducts the protection sheet 4 to this below-surface portion, separating the mechanism's function from the tire's horizontal travel path. This extraction eliminates the obstacle effect while preserving the mechanism's ability to apply tensile force to the protection sheet in the vertical dimension.
Solution Approach 2:
The mechanism transitions from operating in the horizontal dimension (outside the traveling surface) to operating in the vertical dimension (below the traveling surface). This dimensional change allows the mechanism to apply tensile force without interfering with the tire's horizontal forward traveling, as the mechanism and tire operate in different spatial dimensions.
3Length of stationary object
If a space is formed in the traveling surface to conduct the protection sheet below, then the device can be downsized and tire travel can proceed freely, but the road surface state of the traveling surface becomes non-uniform
Solution Approach 1:
The patent uses an upper lid 9 (a thin film/cover structure) to close the upper opening of the space 6. This thin film structure restores the uniform appearance and surface characteristics of the traveling surface while still allowing the space to conduct the protection sheet 4 below the surface. The upper lid maintains the visual and structural uniformity of the traveling surface, eliminating the non-uniformity caused by the open space while preserving the space's functional purpose.
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 allows for a compact device design by minimizing protection sheet length and preventing interference with tire travel, while ensuring the protection sheet's necessary strength and integrity, thus enhancing the device's usability and efficiency.
Implementation Method 1
a backward and forward tensile force application mechanism which applies a tensile force along a tire forward traveling direction to the protection sheet
Data Source
AI summary
A device for measuring a tire ground state includes a traveling surface, a tire drive unit grounding a tire on the traveling surface and rolls the tire, a measuring sheet mounted to a partial area of the traveling surface for measuring the tire ground state, a protection sheet covering the measuring sheet, and a backward and forward tensile force application mechanism applying a tensile force along a tire forward traveling direction to the protection sheet. A space conducting the protection sheet to a portion below the traveling surface is formed in at least one of a delay side and an advance side of the measuring sheet in the tire forward traveling direction on the traveling surface, and the backward and forward tensile force application mechanism is structured such as to pull at least one end of the protection sheet in the tire forward traveling direction from below the traveling surface.