Working Vehicle Cab Pivoting Mechanism for Compact Space Utilization
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Solution Overview
Problem
Conventional slewing excavators require a large space to prevent cab contact and inefficiently utilize space around the cab due to the cab's large rotation radius around a support column, which obstructs visibility and operational efficiency.
Innovation Solution
A working vehicle with a coupling part that includes a coupling part main body and a turning control part, allowing the cab to change orientation with respect to the slewing base, with equal distances and lengths between connecting parts, enabling the cab to turn approximately 90 degrees and create space for passage between the door and working part, thus reducing the rotation radius and improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cab is turned along a large rotation radius around one support column, then the cab can change orientation with respect to the slewing base, but a large space is required around the cab to prevent contact
Solution Approach 1:
The coupling part is divided into two separate parts: a coupling part main body and a turning control part. The coupling part main body connects the slewing base and cab, while the turning control part enables orientation change. This segmentation allows the cab to change orientation with a smaller rotation radius, reducing the space required around the cab while maintaining adaptability.
Solution Approach 2:
The turning control part acts as an intermediary mechanism between the slewing base and the cab. It includes a second base connecting part connected with the slewing base and a second cab connecting part connected with the cab, enabling the cab to rotate relative to the slewing base without requiring a large rotation radius that would demand extensive clearance space.
2Stability of the object's composition
If the cab is positioned with a large rotation radius, then the cab can be supported stably, but it is difficult to efficiently utilize the space around the cab
Solution Approach 1:
By segmenting the coupling mechanism into a coupling part main body and a turning control part, the system achieves stable cab support through the coupling part main body while the turning control part enables compact orientation changes, thereby improving space utilization efficiency around the cab.
Solution Approach 2:
The coupling part main body is turnable with the first base connecting part and first cab connecting part, allowing dynamic adjustment of cab orientation. This dynamic capability is achieved without requiring a large fixed rotation radius, thus improving space utilization while maintaining stability.
3Volume of moving object
If the end part of the crane part protrudes from the front part of the travelling vehicle, then the crane can be stored compactly, but the end part blocks the visibility of the operator
Solution Approach 1:
The system changes the spatial parameters of the cab position and orientation relative to the crane part. By enabling the cab to rotate to different orientations with respect to the slewing base, the operator can adjust the cab position to achieve clear visibility of the front part of the travelling vehicle while the crane part remains in its stored compact position.
Data Source
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AI summary
A working vehicle is provided with a traveling vehicle, a working section which is supported on a rotatable base (6), an operator's cab (3), and a connection section (12). The connection section (12) has: a connection section body (13) which connects the rotatable base (6) and the operator's cab (3) and which is provided so as to be capable of pivoting about a base-side connection section (13a) connected to the rotatable base (6) and about the operator's cab-side connection section (13b) connected to the operator's cab (3); and a pivot control section (14) which extends so as to always intersect the connection section body (13) in the range of pivoting of the connection section body (13), connects the rotatable base (6) and the operator's cab (3), and is provided so as to be capable of pivoting about a base-side connection section (14a) connected to the rotatable base (6) and about an operator's cab (3)-side connection section (14b) connected to the operator's cab (3). The distance between the base-side connection section (13a) and the base-side connection section (14a) and the distance between the operator's cab-side connection section (13b) and the operator's cab-side connection section (14b) are the same, and the distance from the base-side connection section (13a) to the operator's cab-side connection section (13b) and the distance from the base-side connection section (14a) to the operator's cab-side connection section (14b) are the same.