Container Lift Trolley With Winch-Pulley Lifting Mechanism
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Solution Overview
Problem
Current wheel dollies are not robust enough to lift the weight of cargo containers and require additional hydraulic mechanisms, which are heavy and expensive, posing safety and operational challenges.
Innovation Solution
A lift device with a mount insert, carriage/trolley, and winch system that uses guide wheels, pulleys, and a winch with a cable to lift cargo containers, featuring a remote-controlled winch and battery power for enhanced safety and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current wheel dollies are used to lift cargo containers, then the lifting function is achieved, but the device becomes heavy and expensive due to required hydraulic mechanisms
Solution Approach 1:
The patent extracts the hydraulic jack system from the dolly design and replaces it with a winch-based lifting mechanism. The winch system uses a drum and cable arrangement that can be integrated directly into the dolly frame, eliminating the need for separate hydraulic components while maintaining the lifting function.
Solution Approach 2:
The patent replaces the hydraulic mechanical system with a winch-based mechanical system. The winch uses a rotating drum and cable to provide lifting force, substituting the hydraulic pump, valves, and fluid pressure system with a simpler mechanical winding mechanism that can be manually or motor-operated.
2Reliability
If hydraulic jack systems are integrated into wheel dollies, then lifting function is achieved, but the device complexity increases
Solution Approach 1:
The patent removes the complex hydraulic system (pump, reservoir, valves, hoses) and replaces it with a winch mechanism consisting of a drum, cable, and mounting bracket. This extraction of the hydraulic subsystem significantly reduces the number of components and interconnections required.
Solution Approach 2:
The winch mechanism serves multiple functions: it provides the lifting force, acts as a structural component of the dolly frame, and can be operated manually or with a small motor. This multi-functionality reduces the need for separate dedicated lifting components.
3Reliability
If threaded bolt systems are used to raise objects, then lifting is achieved, but user safety is compromised when users must be close to the object
Solution Approach 1:
The patent introduces a winch cable as an intermediary between the operator and the container. The operator controls the winch from a safe distance, and the cable transmits the lifting force without requiring the operator to be in close proximity to the container, thereby eliminating the safety hazard.
Solution Approach 2:
The patent replaces the manual threaded bolt system (which requires the operator to manually turn a large bolt near the container) with a winch system that can be operated from a distance. The winch mechanism provides mechanical advantage through its drum and cable arrangement, eliminating the need for direct manual intervention near the load.
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
The lift device provides a safe and efficient means to lift and move cargo containers without the need for heavy hydraulic systems, offering improved stability and reduced operational complexity.
Implementation Method 1
A winch with a cable lifts the carriage/trolley. The cable exits the winch, spools on the first upper pulley, spools on the lower pulley, spools on the second upper pulley
Implementation Method 2
A winch with a cable lifts the carriage/trolley. The cable exits the winch, spools on the first upper pulley, spools on the lower pulley, spools on the second upper pulley
Implementation Method 3
multiple guide wheels attached to the frame that extend into the passthrough, and a lower pulley attached to the frame. A carriage/trolley vertical member is disposed in the passthrough
Implementation Method 4
The guide wheels ride along the carriage/trolley vertical member during lifting
Data Source
AI summary
Disclosed is a lift device for lifting a container. The device includes a mount insert constructed to insert into and lock with a corner mounting block on the container. A carriage/trolley is attached to the mount insert, and includes a frame that defines a passthrough, a plurality of guide wheels attached to the frame that extend into the passthrough, and a lower pulley attached to the frame. A carriage/trolley vertical member is disposed in the passthrough, and includes a bottom end that contacts the ground, as well as a first upper pulley and a second upper pulley positioned away from the bottom end. A winch with a cable lifts the carriage/trolley. The cable exits the winch, spools on the first upper pulley, spools on the lower pulley, spools on the second upper pulley and connects to a cable anchor. The guide wheels ride along the carriage/trolley vertical member during lifting.