Crawler Vehicle Adjustable Frame Positioning
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Solution Overview
Problem
Crawler vehicles face inefficiencies due to the need for land leveling preparation in limited spaces, which delays operations and increases costs, as they can only switch between maximum and minimum crawler center distances, limiting performance in confined areas.
Innovation Solution
A crawler vehicle with a positioning device that allows the crawler frames to be fixed at three positions: expansion, contraction, and an intermediate position, using a connection link and fixing bracket with specific holes and pins to adjust the distance between crawler centers, enabling stable operation in narrower spaces and improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the distance between centers of the crawlers is maximized to improve stability during crane operation, then the stability is improved, but the grounding space required increases and land leveling preparation becomes necessary
Solution Approach 1:
The crawler frame positioning system enables dynamic adjustment between multiple fixed positions (expanded, contracted, and intermediate positions). This allows the vehicle to adapt its crawler spacing based on operational requirements - maximizing distance for stability during crane operation or minimizing it for compact grounding space during conveyance and limited-space work.
Solution Approach 2:
The system changes the positional parameter of the crawler frames by providing multiple discrete positioning options. The positioning device with connection links and fixing brackets allows the crawler frame to be fixed at different distances from the track frame, enabling parameter variation in the crawler center distance to balance stability and grounding space requirements.
2Area of stationary object
If the distance between centers of the crawlers is minimized to reduce grounding space requirements, then the grounding space is reduced, but the work performance is insufficient
Solution Approach 1:
The positioning system enables the crawler frame to dynamically adjust between multiple positions including an intermediate position that is neither fully expanded nor fully contracted. This intermediate position provides an optimal balance for work performance in confined spaces, allowing the vehicle to operate with sufficient crawler spacing without requiring maximum expansion.
Solution Approach 2:
The system introduces an intermediate position parameter between the minimum and maximum crawler center distances. This intermediate positioning option allows optimization of work performance in limited spaces by using a moderate crawler spacing that is sufficient for stable operation without requiring the maximum expanded position.
3Stability of the object's composition
If land leveling preparation is performed to maximize crawler center distance, then the stability is improved, but the start of crane operation is delayed and working cost is increased
Solution Approach 1:
The positioning device is pre-installed on the track frame with connection links and fixing brackets positioned at predetermined locations. This preliminary preparation allows the crawler frame to be quickly positioned and fixed at the desired expanded position without requiring time-consuming land leveling operations, thereby reducing operation delay while maintaining stability.
Solution Approach 2:
The vehicle's own positioning system enables it to achieve stable crawler positioning independently without requiring external land leveling equipment or preparation. The positioning device with multiple fixing positions allows the vehicle to self-adjust and stabilize itself in various grounding conditions, eliminating the need for separate land leveling operations.
4Device complexity
If only maximum and minimum positions are used for crawler framing, then the device complexity is reduced, but the adaptability to limited spaces is insufficient
Solution Approach 1:
The positioning system is segmented into discrete positioning options (expanded position, intermediate position, and contracted position) rather than a continuous adjustment mechanism. This segmentation provides sufficient adaptability to different space constraints while keeping the positioning mechanism relatively simple, as each position can be achieved through distinct connection link configurations rather than complex continuous adjustment systems.
Data Source
AI summary
In a crawler vehicle, at the time of crane operation at a place where a grounding space of crawlers is limited, a land leveling preparation is suppressed as little as possible so as to improve efficiency of the operation. The crawler vehicle is provided with left and right crawler frames on the both left and right sides of a track frame. The crawler frames can be moved between an expansion position for maximizing a distance between centers of the crawlers and a contraction position for minimizing the distance. Further, the crawler vehicle can position the crawler frames to the track frame at an intermediate position in the middle of the expansion position and the contraction position.