Z-Shaped Connecting Cross Beam for Wheeled Crane Track Hitching
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Solution Overview
Problem
Existing track cranes face limitations in working performance and conversion efficiency due to large stress transfer distances, narrow operation spaces, and complex, heavy connecting devices, which hinder their adaptability and efficiency in transitioning between wheeled and track crane modes.
Innovation Solution
A track hitching structure for wheeled cranes featuring a Z-shaped integral connecting cross beam with a high and low end, integrated into a vehicle frame box structure, utilizing an oil cylinder for easy assembly and disassembly, and a wedge-locking mechanism for secure attachment, along with a partial lapping structure and V-shaped guide device for precise alignment and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a horizontal connecting cross beam is used to connect the track to the vehicle frame, then the structure is simple, but the stress transfer distance becomes large and the connecting device weight increases
Solution Approach 1:
The connecting cross beam is changed from a horizontal configuration to a Z-shaped configuration that extends in the vertical dimension. The beam connects to the vehicle frame at a higher position and to the track at a lower position, creating a diagonal stress transfer path that reduces the horizontal span and allows for more compact connecting device placement, thereby reducing weight while maintaining structural integrity
2Ease of manufacture
If the connecting cross beam is positioned far from the vehicle frame to accommodate track installation, then the track can be installed, but the stress transfer distance increases and working performance decreases
Solution Approach 1:
The connecting cross beam utilizes vertical positioning to bridge the gap between the vehicle frame and track installation points. By extending in the vertical dimension rather than requiring large horizontal distances, the beam maintains short stress transfer paths while providing sufficient installation space for the track, thereby preserving working performance while enabling proper track installation
3Reliability
If multiple connecting devices are used to achieve force transfer, then the connection is secure, but the device complexity and installation time increase
Solution Approach 1:
The first and second connecting devices are merged into a single integrated connecting cross beam structure. This unified design maintains the secure connection function by distributing forces through the Z-shaped beam's multiple attachment points, while eliminating the complexity of multiple separate devices and reducing installation time
4Weight of moving object
If the connecting cross beam is made integral and Z-shaped, then the structure is simplified and weight is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The Z-shaped connecting cross beam is designed with distinct geometric segments (vertical portion, horizontal portion, and diagonal portion) that can be manufactured separately with standard precision requirements and then assembled. This segmentation approach maintains the weight and structural benefits of the integral Z-shaped design while reducing the overall manufacturing precision requirements compared to a fully monolithic beam
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
This solution enhances the reliability and efficiency of the crane's conversion between wheeled and track modes, reduces installation time, and lowers operational costs by simplifying the structure and weight distribution, while maintaining high precision and adaptability.
Implementation Method 1
an oil cylinder for easy assembly and disassembly
Implementation Method 2
a wedge-locking mechanism for secure attachment
Data Source
AI summary
A track hitching structure is for a wheeled crane and the wheeled crane, and includes a vehicle frame and a connecting cross beam. The first end of the connecting cross beam is connected with a track. The second end of the connecting cross beam is connected with the vehicle frame. The second end of the connecting cross beam is higher than the first end of the connecting cross beam. The vehicle frame is connected with the track by the connecting cross beam with one high end and one low end, so the long-distance force transfer from the track to the race of the vehicle frame can be handled, then the shortcomings of tedious structure, large size, large weight and the like of the connecting device caused by a horizontal connecting cross beam are avoided, and the reliability and the working performance of the entire crane are improved.