Cab Ceiling Controller Layout for Excavator View and Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In construction machines capable of unmanned operation, frequent maintenance of high-expandability controllers is time-consuming due to the need to remove protective covers, and there is a challenge in installing controllers without obstructing the operator's field of view.
Innovation Solution
A construction machine design featuring a controller positioned between the ceiling and a ceiling cover in the cab, with a reset button facing downward and an opening in the ceiling cover to expose the button, allowing for maintenance and installation without obstructing the operator's view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the controller is protected by a ceiling cover, then the controller is protected from damage, but maintenance time increases due to the need to remove the cover
Solution Approach 1:
The ceiling cover is divided into a first cover portion and a second cover portion that can be detached from each other. The first cover portion protects the controller while the second cover portion can be removed to provide access to the controller for maintenance, eliminating the need to remove the entire ceiling cover.
Solution Approach 2:
The reset button is extracted and positioned on the controller surface that faces the first cover portion. This allows the reset button to be accessible through an opening in the first cover portion, enabling controller restart operations without removing the protective ceiling cover.
2Adaptability or versatility
If the controller is installed in the cab, then it can control the work device, but it may obstruct the operator's field of view
Solution Approach 1:
The controller is installed in the ceiling space of the cab, utilizing the vertical dimension above the operator's head rather than occupying horizontal space in the operator's field of view. This allows the controller to be positioned out of the operator's direct line of sight while remaining functional.
Data Source
Figure 1
Figure 2
Figure 3
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.