Hydraulic Pivoting Hooks for Refuse Container Lifting
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Solution Overview
Problem
Current methods for lifting refuse containers are inefficient, requiring multiple trips and often necessitating a second person to operate a knuckleboom crane, especially when handling multiple containers.
Innovation Solution
A hydraulically operated lifting apparatus with pivoting hooks that engage fork pockets on refuse containers, allowing for single-person operation of a truck capable of carrying multiple containers, utilizing a pair of hook assemblies connected to a boom for safe and efficient loading and unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a knuckleboom crane with slings or chains is used to unload containers, then containers can be lifted, but the operation requires a second person and is time-consuming
Solution Approach 1:
The lifting apparatus is designed to be self-operating with automated hook engagement and container lifting mechanisms, eliminating the need for a second person to manually operate the crane while maintaining high lifting speed and safety
Solution Approach 2:
The manual mechanical operation of slings and chains is replaced with an automated mechanical lifting system that uses a boom mechanism with integrated hooks to automatically engage and lift containers, reducing both time and operational complexity
2Productivity
If a small truck carrying one container at a time is used, then containers can be delivered, but multiple trips are required increasing time and operational costs
Solution Approach 1:
The lifting apparatus enables the truck to carry and handle multiple containers simultaneously or in rapid succession by providing a robust lifting mechanism that can securely hold and maneuver multiple containers, consolidating what would have been multiple separate trips into fewer operations
Solution Approach 2:
The lifting apparatus is designed with universal compatibility to handle various container types and sizes, allowing a single truck equipped with this apparatus to perform multiple delivery functions in one trip rather than requiring specialized single-container deliveries
3Reliability
If conventional lifting methods are used, then containers can be handled, but safety risks increase due to manual operation requirements
Solution Approach 1:
The automated lifting system performs the lifting operation autonomously without requiring manual intervention near the container, eliminating safety risks associated with manual crane operation while maintaining ease of control through automated mechanisms
Solution Approach 2:
The lifting apparatus acts as an intermediary between the operator and the container, providing a safe automated mechanism that eliminates direct human contact with heavy containers during lifting operations, thereby improving safety while keeping the operation simple through centralized control
Data Source
AI summary
A lifting apparatus is adapted for use in lifting a container having a pair of channels, each of the channels having a pair of open ends. The lifting apparatus includes an elongated support bar and a hook assembly mounted on each end of the support bar. Each of the hook assemblies includes a pair of hooks and a hydraulic cylinder and piston for rotating the hooks between open and closed positions. The container is lifted by lowering the support bar with the hooks in the open position until the hooks can be rotated into the open ends of the two channels. The hooks are then rotated to the closed position so that the hooks extend into the channels. The lifting apparatus is then raised to lift the container.