Automatic Hatch Locking Mechanism for Pressurized Bulk Containers
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Solution Overview
Problem
Existing hatch systems for bulk material containers, especially those on vehicles, require manual operation and lack efficient mechanisms to resist pressurization forces, making them unsafe and inconvenient, especially when containers are pressurized or located at elevated positions.
Innovation Solution
An automatic hatch system with a remotely operable locking mechanism, featuring a pivotable cover, an extendable lock member, and a pneumatic seal, which can be locked in place by a double-acting cylinder to resist opening forces, allowing for secure sealing and operation from a distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual hatch system is used for bulk material containers, then the device complexity is low, but the ease of operation deteriorates when containers are pressurized or located at elevated positions
Solution Approach 1:
The locking mechanism automatically engages and disengages based on the hatch cover position. When the cover is closed, the lock member automatically locks it; when the cover is opened, the lock member automatically unlocks. This eliminates the need for manual locking operations while maintaining simple overall system design.
Solution Approach 2:
The manual mechanical locking operation is replaced with an automatic mechanical system that uses the movement of the hatch cover itself to trigger the locking and unlocking actions through linkages and cam mechanisms, reducing the need for separate manual control operations.
2Strength
If a conventional hatch system without reinforcement is used, then the device complexity is low, but the strength deteriorates when resisting pressurization forces
Solution Approach 1:
The lock member is positioned and engaged before full pressurization forces act on the closed hatch cover. The locking mechanism is activated in advance to secure the cover, ensuring that when pressurization occurs, the reinforcement structure is already in place to resist the opening forces.
Solution Approach 2:
The reinforcement system is divided into separate functional components: the lock member for primary engagement, support members for structural reinforcement, and linkage mechanisms for actuation. This segmentation allows each component to be optimized for its specific function while maintaining overall system manageability.
3Strength
If an automatic locking mechanism with extendable lock member is added to resist pressurization forces, then the strength is improved, but the device complexity increases
Solution Approach 1:
The locking function, support function, and actuation function are merged into an integrated mechanism where the lock member, support members, and linkages work together as a unified system. This reduces the need for separate independent components and control systems, managing complexity through functional integration.
Solution Approach 2:
The lock member serves multiple functions: it provides primary locking engagement, acts as a reinforcement element when extended, and works with the support members to distribute and resist pressurization forces. This multi-functionality reduces the need for additional specialized components.
4Reliability
If manual operation is required for hatch systems, then the device complexity is low, but the safety deteriorates when operators must climb containers or work at elevated positions
Solution Approach 1:
The automatic locking mechanism acts as an intermediary between the operator and the hatch cover. The operator simply needs to trigger the automatic mechanism (e.g., by closing the cover or pressing a button), and the system automatically handles the locking, support deployment, and sealing actions, eliminating the need for operators to physically position themselves in dangerous locations.
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 automatic hatch system enables safe and convenient remote operation, securely seals pressurized containers, and resists opening forces, enhancing safety and operational efficiency by eliminating the need for manual climbing and reducing the risk of accidental opening.
Implementation Method 1
The seal is a pneumatic inflatable seal
Implementation Method 2
the double-acting cylinder is a pneumatic cylinder which extends and retracts the pin when compressed air is directed into the cylinder
Data Source
AI summary
An automatic hatch assembly for bulk material containers includes a hatch cover which covers a fill opening of the container, and may be retrofitted to existing containers equipped with a conventional hatch cover. A drive unit is operable to open and close the hatch cover, and a locking assembly actuates an extendable lock member. Optionally, a pneumatic seal is provided within the cover for sealing the container from the outside environment. The locking assembly is adapted to resist opening forces applied to the cover, such as when the container is pressurized, and a sequencing controller may be provided to facilitate automated operation of the opening/closing, locking/unlocking, and/or sealing/unsealing of the hatch cover.