Energy-Recovering Hydraulic Hook Fixing for Crane Transport
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Solution Overview
Problem
The process of fixing a crane hook during transportation is labor-intensive and risky due to the need for manual alignment of a cable with the hook, requiring significant physical effort and skill, which can lead to accidental injuries.
Innovation Solution
An energy-saving hook fixing device utilizing a hydraulic cylinder, accumulator, and directional control valve to collect and reuse the kinetic energy from the swinging hook, facilitating automatic alignment and fixation of the hook to a cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual alignment method is used to connect cable to hook, then workers can complete the fixation task, but physical effort consumption increases and injury risk rises
Solution Approach 1:
The system uses the hook's own swinging motion to generate hydraulic energy that automatically pulls the cable toward the hook, making the system self-servicing rather than requiring manual intervention for alignment
Solution Approach 2:
Manual mechanical alignment operations are replaced by a hydraulic automation system that converts the hook's kinetic energy into useful work for cable positioning
2Extent of automation
If hydraulic automation system is introduced to automate hook fixation, then labor intensity is reduced and safety is improved, but device complexity increases
Solution Approach 1:
The hydraulic system serves multiple functions: it acts as both an energy recovery mechanism during hook swinging and as a power source for cable tensioning, eliminating the need for separate motor-driven systems
Solution Approach 2:
The system recovers the kinetic energy that would otherwise be wasted during hook swinging and converts it into hydraulic pressure to assist in the cable connection process
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
Reduces labor intensity and risk of injuries by automating the hook fixation process, recovering and reusing the energy generated by the hook's swinging motion.
Implementation Method 1
an accumulator, and a directional control valve. In a first working state, oil in the accumulator enters the hydraulic motor... In a second working state, oil in the rod cavity of the inner cavity of the hydraulic cylinder enters the accumulator
Implementation Method 2
a hydraulic cylinder arranged at an end of the crane close to a hook... when the hook swings, the piston rod of the hydraulic cylinder is pulled
Implementation Method 3
oil in the accumulator enters the hydraulic motor, so as to drive the hydraulic motor to rotate to retract the wire rope
Data Source
AI summary
An energy-saving hook fixing device for a crane is provided, including a hydraulic cylinder arranged at an end of the crane close to a hook, a hydraulic motor, an accumulator, and a directional control valve. A connector is provided at an end of a piston rod of the hydraulic cylinder away from a piston, the connector is used to connect to a cable, the cable is used to connect to the hook, and an inner cavity of the hydraulic cylinder is in communication with an oil tank of the crane. A drum is provided at an output end of the hydraulic motor, the drum is wound with a wire rope, and the wire rope is used to connect to the hook.