Partition Panel Stopper for Construction Machine Assembly
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Solution Overview
Problem
The existing methods for attaching a housing cover to a revolving frame in construction machines, such as hydraulic excavators, often result in damage to anti-corrosive sealing materials due to improper alignment and contact during the mounting process, which complicates the assembly and may lead to corrosion issues.
Innovation Solution
Incorporating a partition panel with a bolt through hole and a stopper that rests on the upper end of the seat screw member, allowing the panel to hang in a floated state above the frame, facilitating alignment and preventing contact with the sealing material, while also serving as a reinforcing element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the housing cover is tentatively placed on the revolving frame for alignment, then the bolt can be brought into alignment with the seat screw member, but the housing cover contacts the sealing material and causes damage
Solution Approach 1:
A stopper member is introduced as an intermediary element between the housing cover and the sealing material. The stopper has a first engagement portion that engages with the housing cover and a second engagement portion that engages with the seat screw member, preventing direct contact between the housing cover and sealing material during the alignment process.
Solution Approach 2:
The stopper member is pre-installed on the seat screw member before the housing cover is placed. This preliminary action ensures that when the housing cover is tentatively positioned for alignment, the stopper is already in place to prevent contact with the sealing material, eliminating the need for careful manual positioning to avoid damage.
2Device complexity
If the housing cover is fixed directly to the revolving frame, then the assembly is simplified, but the sealing material at joint portions is damaged due to improper alignment
Solution Approach 1:
The stopper member serves as a mediator that maintains the reliability of the sealing material while allowing for a simplified assembly process. By engaging with both the housing cover and seat screw member, it ensures proper positioning without requiring complex alignment procedures or manual care to prevent sealing material damage.
3Strength
If the partition panel is heavy, then it provides structural strength, but it is difficult to align and mount efficiently
Solution Approach 1:
The stopper member acts as a mechanical aid that facilitates the mounting of heavy partition panels. By providing engagement portions that connect the panel to the seat screw member, it enables easy alignment and positioning without requiring multiple workers or complex positioning equipment, thus maintaining productivity despite the panel's weight and strength requirements.
Data Source
AI summary
Mounted on a revolving frame are onboard equipments including engine and heat exchanger. These onboard equipments are accommodated in a housing cover consisted by including a front partition panel. The front partition panel is fixed to a seat screw member which is provided on the revolving frame. At this time, lower end portion of the front partition panel is hung in a floated state above the revolving frame by a stopper which is adapted rest on an upper end portion of the seat screw member. Therefore, lower end portion of the front partition panel is hung in a floated state above a upper surface of a left side frame, facilitating to align a bolt through hole in the front partition panel with a nut of the seat screw member at the time of threading and tightening a bolt into the nut.