Container Spreader Pressing Structure Using Gravity for Adaptive Clamping
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Solution Overview
Problem
Existing container spreader clamping devices require independent power equipment for grasping and unloading containers, resulting in high energy consumption and increased mass, which is inefficient and cumbersome.
Innovation Solution
A novel pressing and stretching structure comprising a telescopic rod, rotating mechanism, and guiding cylinder with stoppers and a sliding bush, allowing for non-driven adaptive clamping, where the telescopic rod moves based on gravity and frictional forces to achieve clamping and unloading actions without the need for external power, utilizing a rotating mechanism and elastic components for efficient movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If independent power equipment is used to drive the clamping device, then the clamping device can achieve grasping and unloading actions, but the overall mass of the grab structure increases and energy consumption increases
Solution Approach 1:
The clamping device uses the weight of the container itself as the driving force. When the container is lifted, gravity causes the container to press against the clamping device, automatically triggering the clamping action without requiring external power equipment. The elastic component stores and releases energy to achieve the grasping and unloading actions, making the system self-powered.
Solution Approach 2:
The invention extracts and removes the independent power equipment (motor, cable, etc.) from the grab structure. By eliminating these unnecessary components and relying solely on the container's weight and elastic components, the overall mass of the grab structure is significantly reduced while maintaining the clamping function.
2Ease of operation
If independent power equipment is used to drive the clamping device, then the clamping device can achieve grasping and unloading actions, but energy consumption increases
Solution Approach 1:
The system uses the container's weight as the energy source. Gravity drives the container downward, which in turn activates the elastic component to perform the clamping action. This eliminates the need for continuous power supply from external motors, significantly reducing energy consumption during the clamping process.
Solution Approach 2:
The elastic component provides periodic action - storing energy when the container is lifted and releasing it when the container is lowered. This periodic energy storage and release mechanism eliminates the need for continuous power consumption, as the system only requires initial lifting energy and then operates passively using gravity and elastic recovery.
3Device complexity
If conventional ballpoint pen stretching structure is used, then the structure is simple, but it cannot achieve adaptive clamping without power equipment
Solution Approach 1:
The invention introduces a dynamic elastic component that can adapt to different container weights and positions. The elastic component dynamically adjusts the clamping force based on the container's weight, enabling adaptive clamping without requiring complex power equipment or control systems. The elastic component naturally provides the necessary force variation to handle different loading conditions.
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
This solution enables efficient, non-driven adaptive clamping of container spreaders, reducing energy consumption and overall mass by leveraging gravity and frictional forces to achieve effective grasping and unloading of containers, thereby improving operational efficiency and reducing the need for additional power equipment.
Implementation Method 1
a frictional force between the pin and the circumferential side wall of the sliding bush is greater than a resultant force of a frictional force between the sliding bush and the telescopic rod and the gravity of the sliding bush
Implementation Method 2
the telescopic rod moves based on gravity and frictional forces to achieve clamping and unloading actions without the need for external power
Data Source
AI summary
The present invention discloses a pressing and stretching structure and a clamping structure of a container spreader, and belongs to the technical field of crane accessories. The pressing and stretching structure comprises a telescopic rod, a rotating mechanism and a guiding cylinder which is arranged vertically; a radially telescopic pin is arranged in the guiding cylinder and stoppers are arranged at a lower end; a first annular lug boss and a second annular lug boss are arranged at an interval from top to bottom on an outer wall of the telescopic rod; a sliding bush is sleeved between the first lug boss and the second lug boss; and the rotating mechanism is used for making the telescopic rod and the guiding cylinder to move relatively so that the limiting rod on the telescopic rod reaches the positions of the lower end surface and the upper end surface of the stoppers.