Excavator Partition Wall and Cooler Support Integration
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Solution Overview
Problem
The existing configurations of hydraulic excavators require heavy and costly partition walls, multiple parts, and specialized stays to ensure strength and prevent vibration, leading to increased material and labor costs, as well as reduced assembly efficiency.
Innovation Solution
A configuration where the support frame for the cooler also serves as a reinforcing member for the partition wall, eliminating the need for a separate stay and sealing member, and allowing the partition wall to function as both a structural support and a vibration deterrent, thereby reducing the number of parts, material costs, and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick partition wall is used to ensure required strength, then the strength is improved, but the weight and cost increase
Solution Approach 1:
The support frame and partition wall are merged into a single integrated structure. The support frame serves dual functions as both a structural support for the cooler and a reinforcing element for the partition wall, eliminating the need for a separate thick partition wall while maintaining required strength.
Solution Approach 2:
The support frame is designed to perform multiple functions: supporting the cooler assembly, reinforcing the partition wall structure, and providing structural rigidity to the upper frame. This multi-functionality allows the partition wall to be thinner while still meeting strength requirements.
2Reliability
If separate sealing members are disposed between the partition wall and front support frame, then the sealing function is improved, but the number of parts and assembly complexity increase
Solution Approach 1:
The support frame and partition wall are directly connected through integrated connection structures (connection portions with through-holes), eliminating the need for separate sealing members. The connection design inherently provides both structural attachment and sealing functionality.
Solution Approach 2:
The sealing function is extracted from a separate sealing member and integrated directly into the connection structure between the support frame and partition wall. The connection portions themselves provide the sealing interface, removing the need for additional sealing components.
3Stability of the object's composition
If specialized stays are used to prevent transverse vibration of the front support frame, then the vibration control is improved, but the number of parts and cost increase
Solution Approach 1:
The partition wall is designed to serve multiple functions including structural division, sealing, and vibration control. By directly connecting the partition wall to the support frame through the integrated connection portions, the partition wall itself acts as a stabilizing element that prevents transverse vibration of the front support frame, eliminating the need for separate stay components.
Solution Approach 2:
The vibration control function is merged into the partition wall structure. The integrated connection between the partition wall and support frame creates a rigid assembly where the partition wall provides inherent resistance to transverse vibrations of the front support frame.
4Reliability
If multiple separate components are used for support frame, partition wall, and stays, then the structural function is improved, but the assembling work efficiency deteriorates
Solution Approach 1:
The support frame and partition wall are merged into an integrated structure with direct connection portions. This reduces the number of separate components that need to be assembled while maintaining all necessary structural functions including support, sealing, and vibration control.
Solution Approach 2:
The integrated support frame-partition wall structure performs multiple functions simultaneously: structural support, sealing, and vibration control. This multi-functionality reduces the total number of components needed, thereby simplifying the assembly process and improving work efficiency.
Data Source
AI summary
On the premise that a partition wall for defining an engine room is provided on the left side of a rear portion of an upper frame the partition wall constituting an upper rotating body and that an engine and a cooler are disposed in the engine room, a front support frame which supports a front portion of the cooler is connected to a rear surface of the partition wall in a state of surface abutment against the rear surface, whereby the support frame also serves as a support pillar for the partition wall, the partition wall also serves as a stay for the prevention of transverse vibration of the support frame, and the use of a sealing member for filling up a gap between the partition wall and the support frame can be omitted.