Caterpillar Track Shoe Segmented Buffer Block Design
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Solution Overview
Problem
Conventional track shoes for caterpillar vehicles require complex assembly and high material costs due to the need for separate replacement of rubber and metal components, leading to increased manufacturing and human costs.
Innovation Solution
A track shoe design featuring a metal body with a groove and holes, and a rubber buffer block with an embedded portion and lock holes, allowing for secure embedment and bolt connection, facilitating simple assembly and replacement without extra fastening members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the rubber block is combined with the metal plate during vulcanization molding process, then the strength and durability of the rubber block is enhanced, but the rubber block cannot be demounted from the metal plate and both components need to be replaced simultaneously, increasing material cost
Solution Approach 1:
The track shoe is divided into separate components: a metal plate and a rubber block that can be independently replaced. The metal plate remains permanently attached to the chain, while the rubber block can be removed and replaced separately, eliminating waste of the metal plate when only the rubber wears out.
Solution Approach 2:
Different parts of the track shoe have different properties and replacement needs. The metal plate provides structural strength and is permanently fixed, while the rubber block provides cushioning and wear protection and is replaceable. This local differentiation allows optimal material usage and cost efficiency.
2Ease of repair
If the rubber block and metal plate are manufactured separately and combined with bolts and nuts, then the rubber block can be replaced independently, but the assembly process becomes complicated and requires extra fastening members, increasing manufacturing cost
Solution Approach 1:
The fastening function is merged into the chain assembly process rather than requiring separate fastening members. The metal plate is permanently secured to the chain during chain assembly, and the rubber block is attached using the same bolt holes without requiring additional nuts or fastening components, simplifying the overall assembly process.
Solution Approach 2:
The bolt holes in the metal plate serve multiple functions: they are used for securing the metal plate to the chain during assembly and also for attaching the rubber block. This multi-functionality eliminates the need for separate fastening members and simplifies the assembly process.
3Strength
If bolts and nuts are used to fasten the rubber block on the metal plate, then the connection is secure, but the fastening members must be separated from the track shoe before rubber block replacement, extending replacement time and increasing human cost
Solution Approach 1:
The connection system is segmented into permanent attachment (metal plate to chain) and temporary attachment (rubber block to metal plate). The rubber block can be quickly removed by pulling it off the metal plate without requiring removal of bolts or nuts, significantly reducing replacement time while maintaining secure connection during use.
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 design simplifies the assembly and replacement process, reduces material costs, and enhances the connection between the buffer block and body through complementary S-shaped formations, ensuring a firm and convenient attachment to the chain.
Implementation Method 1
the buffer block is embedded within the body through the elasticity thereof
Data Source
AI summary
A track shoe fastened on a chain of the caterpillar vehicle includes a body and a buffer block. The body includes an first surface adjacent to the chain, a second surface opposite to the first surface, a third surface, a fourth surface opposite to the third surface, a groove defined on the second surface and through the third surface and the fourth surface, and the holes defined through the first surface and the second surface to communicate with the groove. The buffer block includes an embedded portion capable of being embedded within the groove of the body, and multiple lock holes defined through the buffer block to respectively communicate with the holes of the body. The buffer block is secured on the body through the embedment between the embedded portion and the groove, and secured on the chain by the fastening members within the holes and the lock holes.