Construction Machine Engine Cover Coupling Structure
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Solution Overview
Problem
Conventional construction machines face limitations in assembling the engine cover due to the sequential assembly requirement of the counterweight, which leads to vibration-induced hinge malfunctions and reduced durability.
Innovation Solution
A coupling structure featuring a connection plate supported by the main body and extending upwardly from the counterweight, with a hinge mounted on the connection plate and engine cover, and a reinforcement portion to mitigate vibration and enhance strength, allowing for flexible assembly order and improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hinge of the engine cover is coupled to the support protruding from the counterweight, then the engine cover can be supported, but the assembly process is limited requiring the counterweight to be assembled first
Solution Approach 1:
The support structure is divided into two separate components: a support protrusion on the counterweight and a connection plate on the engine cover. This segmentation allows the engine cover to be assembled independently without requiring the counterweight to be assembled first, while still providing proper support and connection functionality.
2Reliability
If the support of the counterweight is connected to the lower portion of the hinge, then the hinge is supported, but vibration from the counterweight is transmitted to the engine cover causing frequent malfunction
Solution Approach 1:
The harmful connection path for vibration transmission is extracted and eliminated. The hinge is no longer connected to the lower portion of the counterweight support, breaking the transmission path that carried vibration from the counterweight to the engine cover, thereby preventing frequent hinge malfunction.
Solution Approach 2:
The connection plate acts as an intermediary component between the engine cover and the support structure. It provides a clean connection point that does not transmit vibration from the counterweight to the engine cover, serving as a vibration-isolating mediator in the assembly.
3Ease of manufacture
If the connection plate extends upwardly from the counterweight, then the engine cover can be easily assembled, but the structural complexity increases
Solution Approach 1:
The connection plate is merged with the engine cover assembly, integrating the support function into the existing engine cover structure. This combining approach simplifies the overall structure by eliminating the need for separate support components while maintaining ease of assembly.
Data Source
AI summary
The present disclosure relates to a coupling structure of a construction machine having improved durability of a hinge and improved assembling properties by allowing an engine cover to be easily assembled to a main body regardless of an assembly order of a counterweight, the coupling structure having effects that since another side of a connection plate is positioned so as to be upwardly spaced apart from an upper portion of a counterweight by a height of a protruding support, vibration generated from the counterweight is not transmitted to another side of the connection plate, thereby improving durability of the hinge. In addition, since the connection plate is supported by the support, there is an effect that the engine cover may be easily coupled to the connection plate by using the hinge, regardless of the assembly order of the counterweight.