Piggyback Vehicle Body Hook-Shaft Coupling for Secure Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing piggyback vehicles face challenges in reliably connecting and easily separating the holding part and body part during loading and unloading operations.
Innovation Solution
A vehicle body design featuring a connection structure with upper hooks and lower circular shafts, along with end connecting mechanisms that allow for secure attachment and rotational separation, enhanced by shear-resisting stop structures and guide limiting members for precise alignment and wear protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple connection structure is used between the holding part and body part, then the device complexity is reduced, but the connection reliability deteriorates
Solution Approach 1:
The connection structure merges two connection points (upper hook-clamp and lower circular shaft-hinge) into a single integrated assembly, combining multiple fastening functions into one unified structure that simultaneously provides both connection reliability and operational simplicity
Solution Approach 2:
The connection structure is segmented into distinct functional components (upper hook, lower circular shaft, clamping mechanism, hinge mechanism) that can independently perform their specific functions while working together as a unified system, allowing each component to be optimized for its particular role
2Reliability
If a secure connection mechanism is implemented between the holding part and body part, then the connection reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The connection mechanism transitions from a static rigid connection to a dynamic system with rotational degrees of freedom, allowing the holding part to rotate relative to the body part during separation, which reduces the force required to break the connection and simplifies the operation
Solution Approach 2:
Instead of requiring active disengagement mechanisms to release the connection, the design allows passive separation through rotational movement that naturally loosens the clamping force, inverting the traditional approach where release mechanisms actively push parts apart
3Reliability
If the holding part and body part are firmly connected, then the connection reliability is improved, but the ease of separation deteriorates
Solution Approach 1:
The connection maintains firm static engagement during normal operation but transitions to easy separation when rotational movement is applied, utilizing the dynamic change in mechanical advantage as the rotation angle changes to reduce separation force requirements
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A piggyback vehicle and a vehicle body thereof are provided. The vehicle body includes a body part (1) and a holding part (4), each of two longitudinal ends of the holding part (4) is provided with a connection structure, and the connection structure includes an upper hook (421) and a lower circular shaft (412c) extending in a transverse direction. The body part (1) is provided with an end connecting mechanism (22), the end connecting mechanism (22) includes an end connecting hook (221) and an end longitudinal support member (222), and an upward hook opening is defined by the end connecting hook (221). In an assembled state, the lower circular shaft (412c) may be hung on the hook opening of the end connecting hook (221), and the upper hook (421) may be clamped onto the end longitudinal support member (222). With this structure, there are two connection points between each of the two longitudinal ends of the holding part (4) and the body part (1), and thus the connection between the holding part (4) and the body part (1) is reliable; and during separation, by lifting the body part (1), the body part (1) and the holding part (4) are able to rotate with respect to each other by taking a central axis of the lower circular shaft (412c) as a rotational center line, forcing the junction between the upper hook (421) and the end longitudinal support member (222) to be loosened, thus facilitating the separation between the holding part (4) and the body part (1).