Rubber Track Core with Lateral Force Carrying Sections
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Solution Overview
Problem
Conventional rubber tracks face issues with steel cord cuts due to abnormal tensile forces, corrosion, and lateral slippage, which existing solutions fail to adequately address, leading to operational disruptions and increased costs.
Innovation Solution
The rubber track design features cores with wing portions, engagement sections, and guide projections that distribute tensile forces evenly, preventing cord cuts and corrosion by using a fixation belt layer to connect adjacent cores and manage lateral slippage effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the strength per tensile reinforcement (steel cord) or the number of embedded tensile reinforcements is increased to prevent cutting, then the resistance to tensile force is improved, but the corrosion problem of steel cords cannot be settled
Solution Approach 1:
The patent extracts the tensile reinforcement function from steel cords and relocates it to the cores. The cores are equipped with tensile force carrying sections that extend laterally to connect with adjacent cores, forming a chain structure that carries tensile forces without using steel cords, thereby eliminating corrosion issues while maintaining strength
Solution Approach 2:
The patent introduces an intermediary structure (the core with tensile force carrying sections) that mediates between the engagement section and the lateral connection function. This core structure serves as a mediator to transfer tensile forces between adjacent cores without relying on steel cords embedded in the rubber track body
2Device complexity
If conventional cores without lateral extension are used, then the structure is simple, but the tensile force is not evenly distributed causing steel cord cuts
Solution Approach 1:
The patent segments the core structure into distinct functional sections: an engagement section for sprocket engagement and tensile force carrying sections that laterally extend to connect with adjacent cores. This segmentation allows each section to perform its specific function, achieving even tensile force distribution while maintaining structural simplicity
Solution Approach 2:
The core is designed as a multi-functional element that simultaneously provides engagement section for sprocket interaction, tensile force carrying sections for lateral connection, and guide projections for preventing derailment. This multi-functionality eliminates the need for separate steel cords while achieving even force distribution
3Device complexity
If the core structure does not have guide projections, then the structure is simpler, but the track can come off the traveling device
Solution Approach 1:
The core structure is segmented to include guide projections as distinct elements that protrude from the engagement section. These guide projections specifically address the track retention function without complicating the engagement section, maintaining overall structural simplicity while ensuring reliable track retention
Data Source
Figure 1A~1D
Figure 2
Figure 3A~3E
AI summary
A rubber track (1) has formed in it simple means that can carry a part of abnormal tensile force acting on substantially the entire length in the circumferential direction of the rubber track (1). The construction secures smooth operation of the rubber track and reliably prevents cutting of a steel cord (s1) due to such abnormal tensile force. A core (3) has an engagement section (3b) located in the center region in the longitudinal direction of the core, guide projections (3a) on the outer sides of the guide projections (3a). The core (3) further has tensile force carrying sections (4a, 4b) arranged at positions that are located in the thickness direction of the core and are closer to the outer periphery of the rubber track than the outer peripheral-side d-surfaces of the wing sections (3c). The tensile force carrying sections (4a, 4b) carry tensile force acting in the lateral direction of the core and also carry pressing force acting in the thickness direction of the core. Corresponding tensile force carrying sections (4a, 4b) of cores adjacent to each other in the circumferential direction of the rubber track are engaged with each other. Further, a fixation belt layer in the circumferential direction of the rubber track is provided in a rubber track body (1a) at positions related to tensile force carrying sections (4a, 4b).