Motor-Driven Shielding Door for Radiation Inspection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional radiation inspection system shielding devices are passive, leading to incomplete closure and radiation leakage, and are limited to vertical configuration, hindering convenient entry and exit and providing inadequate shielding.
Innovation Solution
A shielding door device with a motor-driven, metal-bodied door system using guides, a rack, and proximity switches for intelligent control, ensuring complete closure and preventing radiation leakage, featuring a lead alloy shielding layer for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a passive rubber curtain with lead layer is used as shielding device, then the shielding structure is simple, but the shielding is incomplete and radiation leakage occurs
Solution Approach 1:
The patent transforms the passive static shielding curtain into an active dynamic door system that can automatically open and close. The door body is driven by a motor through a transmission mechanism (rack and pinion or belt drive), allowing it to move between open and closed positions dynamically, ensuring complete shielding when closed while maintaining operational convenience.
Solution Approach 2:
The shielding door system incorporates automatic control features where the door automatically closes after the inspected object passes through, and automatically opens when needed. The system uses sensors and control circuits to detect the presence and movement of objects, triggering automatic door operations without manual intervention, thus achieving complete shielding reliably.
2Ease of operation
If a passive shielding device is used, then the device structure is simple, but entry and exit of examined objects is inconvenient
Solution Approach 1:
The door system enables convenient entry and exit by automatically opening when an object approaches (detected by sensors) and automatically closing after passage. This dynamic operation eliminates the need for manual opening/closing while ensuring the door is fully closed during radiation exposure, resolving the contradiction between convenience and shielding effectiveness.
Solution Approach 2:
The system incorporates sensors that detect the presence and movement of inspected objects, providing feedback to the control system. Based on this feedback, the control system automatically triggers the door to open or close at appropriate times, ensuring both operational convenience and complete shielding reliability.
3Adaptability or versatility
If a passive shielding device is used, then the configuration is limited to vertical, but the device complexity is low
Solution Approach 1:
The motor-driven door system can be configured in various orientations (vertical, horizontal, or angled) depending on the installation requirements. The transmission mechanism (rack and pinion or belt drive) and guide rails can be adapted to different configurations, providing versatility while maintaining a relatively simple overall structure.
Solution Approach 2:
The shielding door system is designed with universal adaptability, allowing it to be installed in different orientations and configurations to suit various inspection system layouts. The standardized motor-driven mechanism can serve multiple functions across different applications, enhancing versatility without significantly increasing complexity.
4Reliability
If an automatic motor-driven door system is implemented, then complete shielding is achieved, but the device complexity increases
Solution Approach 1:
The motor-driven door system with automatic control achieves complete shielding reliability by ensuring the door is fully closed during radiation exposure. The complexity is managed through the use of standardized components (motor, transmission mechanism, guide rails) and automated control that eliminates manual intervention, making the increased complexity worthwhile for the reliability gain.
Solution Approach 2:
The automatic door system operates autonomously, detecting object presence and automatically opening/closing without manual control. This self-service capability ensures complete shielding is maintained reliably while reducing operational complexity, as the system manages its own operation based on sensor feedback rather than requiring complex manual control mechanisms.
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 solution enables complete and automatic shielding of the radiation inspection system, preventing accidental radiation leakage and allowing for convenient entry and exit, ensuring the system is only activated when fully closed.
Implementation Method 1
the metal material shielding layer is made of a lead alloy
Implementation Method 2
a rack, a gear and a motor. The gear is coupled with a shaft of the motor
Implementation Method 3
The rack is fixed on a bottom of the door body and meshed with the gear
Implementation Method 4
a proximity switch for closing the door body and a proximity switch for opening the door body are disposed on the lower surface of the frame
Data Source
AI summary
A radiation inspection system includes a shielding door device for a radiation inspection system, comprising a door body, two guides located on two opposite sides of the door body, a rack, a gear and a motor. The two guides are fixed on an upper surface of a frame and the door body is movably connected to the two guides via bearings. The rack is fixed on a bottom of the door body and meshed with the gear. The gear is coupled with a shaft of the motor fixed on a lower surface of the frame. This configuration is advantageous in automatic and complete shielding of the radiation inspection system without interference. In addition the shielding door can be controlled intelligently, so that accidental radiation leakage can be prevented.