Rotating Cab Support Structure With Automatic Displacement Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cab support structures in construction machines require manual manipulation of gap-filling members during rotation, leading to reduced workability due to the need for pushing and pulling these members into and out of displacement holes, and alignment challenges with connecting pins during rotation.
Innovation Solution
A cab support structure featuring a connecting mechanism with a connecting shaft, displacement allowing members, and an interlocking member that allows vertical displacement at one position and restricts downward displacement at another, eliminating the need for manual manipulation of gap-filling members and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gap-filling member is provided on the connecting pin to fill gaps during rotation, then the displacement control is improved, but the workability deteriorates due to the need for manual pushing and pulling of the gap-filling member
Solution Approach 1:
The connecting pin automatically fills and empties the gap through its own rotational motion. When the connecting pin rotates, its outer peripheral surface naturally pushes the gap-filling member into the insertion hole, and when it returns to the original position, the gap-filling member is automatically pulled out. This eliminates the need for manual intervention and improves workability while maintaining displacement control.
Solution Approach 2:
The gap-filling member is preliminarily positioned on the outer periphery of the connecting pin, ready to be pushed into the insertion hole. The structure is designed so that the connecting pin's rotation automatically performs the action of pushing the gap-filling member into place before the displacement restriction is needed, eliminating the need for separate manual operations.
2Reliability
If cutout grooves are provided in the frame side bearing to restrict displacement, then the displacement control is improved, but the workability deteriorates due to alignment requirements during rotation
Solution Approach 1:
The connecting pin automatically aligns itself with the insertion hole through its rotational motion. The pin's rotation naturally brings it into the correct position to push the gap-filling member into the hole, eliminating the need for manual alignment operations and improving workability while maintaining displacement control.
Solution Approach 2:
The structure is designed so that the connecting pin's rotation automatically performs the alignment action before the displacement restriction is engaged. The pin rotates into the correct position preliminarily, making the subsequent gap-filling action automatic and eliminating manual alignment requirements.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
This cab support structure includes a mount device provided on a vehicle body frame; and a connecting mechanism that connects a cab provided above the vehicle body frame via the mount device to the vehicle body frame to be rotatable between a seated position and a tilt position, wherein the connecting mechanism includes a connecting shaft that is connected to the mount device and extends in a horizontal direction, a displacement allowing member connected to the vehicle body frame, and an interlocking member that is connected to the cab and is rotatable in interlock with rotation of the cab, wherein the displacement allowing member has a displacement allowing hole that allows displacement of the connecting shaft in a vertical direction and allows rotation of the connecting shaft between the seated position and the tilt position, and wherein the interlocking member has a displacement allowing portion that allows displacement of the connecting shaft in the vertical direction at the seated position, and a displacement restricting portion that restricts downward displacement of the connecting shaft at the tilt position.