Excavator Cab Ceiling Controller Layout for Fast Reset Access
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Solution Overview
Problem
Existing construction machines with high-expandability controllers require extensive maintenance time due to the need to remove interior covers for access, obstructing the operator's field of view and increasing downtime.
Innovation Solution
A construction machine design with a controller positioned between the ceiling and a cover, featuring a reset button facing downward and an opening for exposure within the cab, allowing maintenance without obstructing the operator's view and reducing maintenance time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the controller is disposed inside the cab to enable unmanned operation control, then the field of view of the on-board operator is obstructed, but if it is disposed outside the cab, then it cannot be easily accessed for maintenance
Solution Approach 1:
The controller is segmented into two functional parts: the main controller body is disposed inside the cab for operational control, while the reset button is exposed outside the cab through the ceiling cover opening. This segmentation allows the controller to serve dual purposes - maintaining unobstructed operator view while enabling easy external access for maintenance operations.
Solution Approach 2:
The ceiling cover with an opening portion acts as an intermediary structure that bridges the internal and external spaces. It allows the reset button to be accessible from outside the cab while the main controller remains protected inside, facilitating maintenance without requiring full disassembly or operator displacement.
2Object-affected harmful factors
If the controller is covered with an interior material cover for protection, then the controller is protected from environmental factors, but then maintenance time increases due to the need to remove the cover
Solution Approach 1:
The protective cover system is segmented into a main ceiling cover and a localized opening portion. The opening is strategically positioned to expose only the reset button while the rest of the controller remains protected. This selective exposure maintains environmental protection while eliminating the need to remove the entire cover for routine maintenance operations.
Solution Approach 2:
The reset button function is extracted from the enclosed controller body and made accessible through the ceiling cover opening. This extraction allows maintenance personnel to perform restart operations without accessing the interior of the cab or removing protective covers, significantly reducing maintenance time while preserving controller protection.
3Adaptability or versatility
If the controller is made with high expandability for versatile functionality, then adaptability improves, but then maintenance frequency increases requiring faster access
Solution Approach 1:
The controller is designed with a self-service maintenance capability where the reset button is externally accessible through the ceiling cover opening. This allows operators or maintenance personnel to perform restart operations independently without requiring technical expertise or extensive disassembly, reducing maintenance downtime despite increased maintenance frequency associated with high-expandability controllers.
Data Source
AI summary
An object of the present invention is to provide a construction machine that allows installation of a controller without obstructing the field of view of an on-board operator and that makes it possible to reduce time required for maintenance of the controller. To achieve this, there is provided a hydraulic excavator including a machine body including a work device, a cab provided in the machine body, an operation device provided in the cab to operate the work device, a ceiling cover that covers at least a portion of a ceiling in the cab from below, and a first controller that controls the work device during remote operation or automatic operation. The first controller includes a reset button for restarting, and is disposed between the ceiling and the ceiling cover with the reset button facing downward, and the ceiling cover is fitted at such a position as to cover the first controller from below, and includes an opening portion that causes the reset button to be exposed to an inside of the cab.