Excavator Cab Vibration Isolator Mount for Hoist-Free Height Adjustment
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Solution Overview
Problem
The existing construction machines require labor-intensive and time-consuming height adjustment of cabs, often necessitating hoisting operations, which complicates the process and increases labor hours.
Innovation Solution
The implementation of a construction machine design featuring vibration isolating members with a connecting tool and spacer system that allows for height adjustment without hoisting, using a disc-shaped connecting tool and upside/downside spacers to adjust the cab's position relative to the vehicle body frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bolts fixing the vibration isolating member are loosened to allow spacer insertion, then height adjustment becomes possible, but a gap for spacer insertion cannot be formed without hoisting the cab
Solution Approach 1:
The connecting member is divided into two separate components: the connecting tool that attaches to the vehicle body frame, and the vibration isolating member with its fastening part. This segmentation allows the spacer to be inserted between the connecting tool and the vibration isolating member without requiring cab hoisting, as the vibration isolating member can be independently positioned and attached to the cab bottom plate.
Solution Approach 2:
The spacer acts as an intermediary element inserted between the connecting tool and the vibration isolating member. This intermediary component enables height adjustment by providing a detachable thickness element that can be added or removed, allowing gap formation and spacer insertion without complex hoisting operations.
2Manufacturing precision
If the cab is hoisted to form a gap for spacer insertion, then height adjustment can be performed, but labor and time consumption increases
Solution Approach 1:
The connecting tool is pre-installed on the vehicle body frame before the vibration isolating member is attached. This preliminary action creates a ready-made mounting interface with built-in spacer insertion capability, eliminating the need for time-consuming hoisting operations during the height adjustment process. The spacer can be directly inserted into the pre-prepared connection interface.
Solution Approach 2:
The height adjustment mechanism is made dynamic and adjustable through the use of removable spacers. Instead of a fixed rigid connection, the system allows for flexible height modification by adding or removing spacer elements, enabling quick adjustments without permanent structural changes or complex hoisting procedures.
3Adaptability or versatility
If spacers are added between the revolving frame and vibration isolating members for height adjustment, then cab height can be modified, but the process becomes labor-intensive requiring crane hoisting
Solution Approach 1:
The spacer insertion function is merged into the connecting member assembly itself. Rather than requiring separate hoisting and spacer insertion operations, the connecting tool is designed with integrated spacer reception capability, allowing the spacer to be easily inserted and secured as part of the normal assembly process without additional heavy equipment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and efficient height adjustment of the cab without the need for hoisting, reducing labor and time required for the process while maintaining vibration isolation.
Implementation Method 1
a plurality of vibration isolating members that are disposed between said vehicle body frame and said cab to support said cab on said vehicle body frame in a vibration isolating state
Data Source
Figure 1
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AI summary
A hydraulic excavator (1) includes a revolving frame (7) forming a support structure, a cab (14) that is disposed to be positioned on a front side of the revolving frame (7) and in which an operator gets, and a plurality of vibration isolating members (18) that are disposed between the revolving frame (7) and the cab (14) to support the cab (14) on the revolving frame (7) in a vibration isolating state. Further, an intermediate connecting member (20) is disposed for connection between the revolving frame (7) and the vibration isolating member (18) and for a height position adjustment of the cab to the revolving frame (7). The intermediate connecting member (20) is fixed to the revolving frame (7) from a lower side.