Movable Centering Means for Tractor Chassis Assembly
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Solution Overview
Problem
Modern agricultural working machines, such as tractors, face challenges in precise alignment of components transverse to the longitudinal direction and difficulty in dismantling individual chassis components without disassembling the entire chassis, due to fixed installation and tolerance compensation methods.
Innovation Solution
Incorporation of a centering means that can be moved from a centering position to a dismantling position, allowing for precise alignment of assemblies and enabling individual components to be dismantled without complete chassis disassembly, using a centering means with a through hole and connecting profile for axial displacement and connection to a pulling device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the chassis is constructed with fixed interconnected assemblies, then structural rigidity is improved, but ease of maintenance deteriorates
Solution Approach 1:
The centering means is designed to be movable rather than fixed, allowing it to be displaced between a centering position (for assembly) and a dismantling position (for maintenance). This dynamic capability enables individual components to be removed without dismantling the entire chassis, resolving the contradiction between structural rigidity and ease of maintenance.
Solution Approach 2:
The centering means can be extracted or displaced from the assembled chassis structure to a dismantling position, allowing individual assemblies to be removed for maintenance while the rest of the chassis remains intact. This extraction capability maintains chassis rigidity during operation while enabling easy maintenance.
2Ease of manufacture
If standardized centering means are used, then manufacturing cost is reduced, but alignment precision for complex components deteriorates
Solution Approach 1:
The centering function is segmented into two separate centering means (first and second parts) that can be independently optimized. This allows standardized, cost-effective components to be used while achieving precise alignment through the combined action of both parts.
Solution Approach 2:
The invention merges two centering functions into a single centering means structure, where the first part provides longitudinal tolerance compensation and the second part provides transverse alignment. This combination achieves high precision alignment while using standardized, cost-effective components.
Data Source
Figure 1~2b
Figure 3a~3b
AI summary
An agricultural machine, in particular a tractor, comprises a chassis (10) which has at least a first assembly (18) and a second assembly (20), wherein each assembly (18, 20, 26) comprises at least one component (12, 14, 16, 22, 24), and wherein the chassis (10) has at least one centering means (30) which, in an assembled state of the chassis (10), is arranged in a centering position (32) between two assemblies (18, 20, 26) arranged next to each other, wherein in the centering position (32) the centering means (30) is received at least partially in the assemblies (18, 20, 26) arranged next to each other in recesses (42) formed for this purpose. According to the invention, the centering means (30) can be moved from the centering position (32) to a disassembly position (56) in the assembled state of the chassis (10), in which the centering means (30) is only received in one of the assemblies (18, 20, 26).