Loading Vehicle Automatic Tool-Holder Roll-In for Cargo Retention
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Solution Overview
Problem
Existing loading vehicles face issues with cargo spillage and instability due to the tilting of the tool holder and loading shovel during lifting, especially in telescopic arms, leading to space constraints and increased risk of material loss.
Innovation Solution
A loading vehicle equipped with an automatic rolling-in device that pivots the tool holder relative to the lifting arm, ensuring the loading shovel is fully upright during lifting, reducing the risk of cargo spillage and improving stability by maintaining the center of gravity closer to the chassis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lifting arm is raised during loading operations, then the loading capacity and reach are improved, but the tool holder and loading shovel tilt causing cargo spillage
Solution Approach 1:
The patent combines the lifting arm mechanism with a parallel guidance mechanism that couples the lifting cylinder and tilting cylinder. This merging ensures that when the lifting arm is raised, the tool holder and loading shovel maintain their angular position relative to the surroundings through coordinated hydraulic control, preventing cargo spillage while achieving the desired lifting reach.
Solution Approach 2:
The patent introduces a master cylinder as an intermediary component that hydraulically couples the lifting cylinder and tilting cylinder. The master cylinder receives hydraulic fluid during lifting operations and automatically triggers the tilting cylinder to pivot the tool holder, serving as a mediator that coordinates between the lifting action and the parallel guidance requirement.
2Reliability
If the tool holder is manually repositioned to prevent spillage, then cargo retention is improved, but operator workload and time consumption increase
Solution Approach 1:
The patent implements a self-service mechanism where the parallel guidance system automatically adjusts the tool holder position during lifting operations. The hydraulic coupling between the lifting cylinder and tilting cylinder enables the system to self-regulate the loading shovel orientation without requiring continuous operator intervention, thus maintaining cargo retention while reducing manual workload and time consumption.
3Reliability
If a parallel guidance system is implemented, then cargo spillage is prevented, but the device complexity increases
Solution Approach 1:
The patent designs the master cylinder to serve multiple functions: it acts as both a lifting actuator and a control mechanism for the tilting cylinder. This multi-functionality reduces the need for separate dedicated components for parallel guidance, thereby achieving cargo retention through coordinated control while minimizing the increase in overall system complexity.
4Productivity
If the loading shovel is tilted forward for loading, then loading efficiency is improved, but stability during lifting deteriorates
Solution Approach 1:
The patent employs a dynamic control system that continuously adjusts the tool holder orientation based on the lifting arm position. During loading operations, the system allows the loading shovel to tilt forward for efficient material engagement, then automatically compensates by pivoting the tool holder to maintain parallel guidance during lifting, thus achieving both loading efficiency and stability through adaptive control.
Data Source
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AI summary
A loading vehicle is specified, comprising a mobile chassis (1), a lifting arm (3) which can be pivoted about a lifting arm rotation axis (6) relative to the chassis (1) by means of a lifting device (10) in such a way that the lifting arm (3) can be raised and lowered, a tool holder (4) which is provided at the end of the lifting arm (3) remote from the lifting arm rotation axis (6) and which can be pivoted about a tool holder rotation axis (8) relative to the lifting arm (3), and a rolling-in device for automatically rolling in the tool holder (4) relative to the lifting arm (3) during a lifting process of the lifting arm (3).