Multi-degree-of-freedom adjustment structure for visual elements of a radiation-hardened video centering tool
Patent Information
- Application Number
- CN202521736972.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-08-15
AI Technical Summary
[0002]在反应堆压力容器顶盖关盖时，堆内构件上安装有控制棒驱动杆、热电偶柱、芯杆组件部件为柱状部件，这些部件在顶盖吊装过程中需要精准的通过顶盖对应接管，需要精确定位，不得出现偏差，如果柱状部件与顶盖接管出现对中不良的情况，吊装顶盖下降过程中会造成上述柱状部件弯折及损坏，而且由于顶盖下降过程中，反应堆水池有水，而且核辐射剂量高，存在一定危险性，导致现场技术人员无法到达反应堆水池旁边观测堆内构件各部件的对中情况，所以需要一种可以远程操控视觉检测装置，可以帮助核电厂技术人员通过主从控制的方式，远程操控视觉元件，实时检测各部件对准对中情况，并对整个过程进行记录
[0011]与现有技术相比，本实用新型，能够快速安装拆卸，可以灵活的多自由度调节，便于在工作过程中切换检测角度以及适配不同的堆内顶盖直径，在反应堆顶盖吊装过程的对中检测中，可以最大程度上减小视觉盲区，增大对中检测成功率，避免发生对中不良而引发故障或事故；采用耐辐射且轻质材质，最大程度减小零件重量，避免悬臂零件弯曲变形过大导致难以对中成功，保证对中视觉元件准确无错位及抖动，确保工作稳定性。
Smart Images
Figure CN224721926U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to special equipment and its control technology, specifically, a multi-degree-of-freedom adjustment structure for the vision element of a radiation-resistant video centering tool. Background Technology
[0002] When the reactor pressure vessel top cover is closed, the internal components, including control rod drive rods, thermocouple rods, and core rod assemblies, are columnar components. These components need to be precisely aligned with the corresponding pipes on the top cover during the top cover hoisting process. Accurate positioning is crucial to prevent any deviation. If the columnar components are not properly aligned with the top cover pipes, the columnar components may bend or be damaged during the top cover descent. Furthermore, due to the presence of water in the reactor pool and the high radiation dose during the top cover descent, there is a certain degree of danger. This prevents on-site technicians from reaching the reactor pool to observe the alignment of the internal components. Therefore, a remotely controllable visual inspection device is needed. This device would allow nuclear power plant technicians to remotely control the visual elements through a master-slave control mechanism, monitor the alignment of each component in real time, and record the entire process.
[0003] For this purpose, the vision inspection system designed for this scenario needs to be quick to install and disassemble, and also needs to be flexible and adjustable with multiple degrees of freedom to switch inspection angles and adapt to different reactor top cover diameters during operation. Its beneficial effect is that during the alignment inspection of the reactor top cover during hoisting, it can minimize the visual blind spot, increase the alignment inspection success rate, and avoid misalignment that could lead to malfunctions or accidents.
[0004] Therefore, it is necessary to provide a multi-degree-of-freedom adjustment structure for the visual element of a radiation-resistant video centering tool to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a multi-degree-of-freedom adjustment structure for the visual element of a radiation-resistant video centering tool.
[0006] The technical solution is as follows: A multi-degree-of-freedom adjustment structure for the vision element of a radiation-resistant video centering tool includes a top cover support cylinder, a camera probe motor rotation drive box on the top cover support cylinder, and a transverse support rod assembly on the top cover support cylinder, with a camera probe at the end of the transverse support rod assembly. The camera probe motor rotation drive box is used as the R-axis position adjustment drive for the camera probe rotation; the lateral support rod assembly includes a telescopic carbon rod, which is used as the lateral degree of freedom adjustment drive; the combination forms a multi-degree-of-freedom adjustment structure for the radiation-resistant video centering tool vision element.
[0007] Furthermore, the transverse support rod assembly also includes a camera sleeve disposed on the top cover support cylinder, the carbon rod is slidably disposed inside the camera sleeve, and the end of the camera sleeve is provided with a carbon rod tensioning sleeve A and a carbon rod tensioning sleeve B corresponding to the carbon rod.
[0008] Furthermore, a limiting pin is provided at the end of the camera sleeve corresponding to the carbon rod. The carbon rod is designed with a groove, and the limiting pin can move within the groove. The outer diameter of the carbon rod is smaller than the inner diameter of the camera sleeve. After the carbon rod is installed and inserted into the camera sleeve, the limiting pin is locked into the carbon rod groove. When adjusting the distance the camera probe extends, the carbon rod and the camera probe as a whole can be adjusted to move away from or closer to the camera sleeve to form an adjustable structure. After adjusting to the target position, the carbon rod tensioning sleeve B can be rotated in conjunction with the carbon rod tensioning sleeve A to lock the carbon rod part onto the camera sleeve.
[0009] Furthermore, the camera probe motor rotation drive box consists of a housing, a drive motor, and transmission gears. By controlling the motor speed and direction, it achieves smooth rotation and precise positioning of the transverse support rod assembly and the probe, ensuring operational flexibility and safety in different work positions.
[0010] Furthermore, the camera probe motor rotation drive box comprises an upper cover, a gearbox lower cover, a motor, a motor bracket A, a motor bracket B, a pinion, a large gear, bearings, pins, elastic plungers, a rotation angle sensing plate, and a sensing plate bracket. The motor and pinion are fastened together and locked onto the motor bracket B.
[0011] Compared with existing technologies, this invention allows for rapid installation and disassembly, flexible multi-degree-of-freedom adjustment, and easy switching of detection angles during operation, as well as adaptation to different reactor top cover diameters. During the alignment inspection of the reactor top cover during hoisting, it can minimize blind spots, increase the success rate of alignment inspection, and avoid malfunctions or accidents caused by misalignment. The use of radiation-resistant and lightweight materials minimizes the weight of parts, preventing excessive bending and deformation of cantilever parts that could hinder alignment, ensuring accurate alignment of the vision elements without misalignment or vibration, and guaranteeing operational stability. Attached Figure Description
[0012] Figure 1 This is one of the schematic diagrams of this utility model.
[0013] Figure 2 This is the second schematic diagram of this utility model.
[0014] Figure 3 This is the third schematic diagram of this utility model.
[0015] Figure 4 This is the fourth schematic diagram of this utility model. Detailed Implementation
[0016] Example:
[0017] See Figure 1-4 This embodiment demonstrates a multi-degree-of-freedom adjustment structure for the vision element of a radiation-resistant video centering tool, including a top cover support cylinder 1, a camera probe motor rotation drive box 2 on the top cover support cylinder 1, and a transverse support rod assembly 3 on the top cover support cylinder 1, with a camera probe 4 at the end of the transverse support rod assembly. The camera probe motor rotation drive box 2 is used as the R-axis position adjustment drive for the camera probe rotation; the lateral support rod assembly 3 includes a telescopic carbon rod 5, which is used as the lateral degree of freedom adjustment drive; the combination forms a multi-degree-of-freedom adjustment structure for the radiation-resistant video centering tool vision element.
[0018] The transverse support rod assembly 3 also includes a camera sleeve 6 disposed on the top cover support cylinder 1. The carbon rod 5 is slidably disposed inside the camera sleeve 6, and the end of the camera sleeve 6 is provided with a carbon rod tensioning sleeve A7 and a carbon rod tensioning sleeve B8 corresponding to the carbon rod.
[0019] The camera sleeve 6 is also equipped with a limiting pin 9 corresponding to the carbon rod. The carbon rod 5 is designed with a sliding groove, and the limiting pin 9 can move within the sliding groove. The outer diameter of the carbon rod 5 is smaller than the inner diameter of the camera sleeve 6. After the carbon rod 5 is installed and inserted into the camera sleeve 6, the limiting pin 9 is locked into the carbon rod sliding groove. When adjusting the distance of the camera probe 4, the carbon rod and the camera probe as a whole can be adjusted to move away from or closer to the camera sleeve to form an adjustable structure. After adjusting to the target position, the carbon rod tensioning sleeve B can be rotated to lock the carbon rod part onto the camera sleeve in conjunction with the carbon rod tensioning sleeve A.
[0020] The camera probe motor rotation drive box 2 consists of a box, a drive motor, and transmission gears. By controlling the motor speed and direction, it achieves smooth rotation and precise positioning of the transverse support rod assembly and the probe, ensuring operational flexibility and safety in different work positions.
[0021] The camera probe motor rotation drive box consists of an upper cover 10, a gearbox lower cover 11, a motor 12, a motor bracket A13, a motor bracket B14, a pinion 15, a large gear 16, a bearing 17, a pin 18, an elastic plunger 19, a rotation angle sensing plate 20, and a sensing plate bracket 21. The motor 12 and the pinion 15 are fastened together and locked onto the motor bracket B14.
[0022] Motor 12 drives pinion 15 to rotate, transmitting power to large gear 16. Large gear 16 is connected to the transverse support rod assembly 3, top cover support cylinder 1 and probe 4 as a whole. When motor 12 drives pinion 15 to rotate, large gear 16 rotates together with transverse support rod assembly 3, top cover support cylinder 1 and probe 4, thereby enabling probe 4 to adjust the viewing angle within the range of 0~180°.
[0023] Compared with existing technologies, this invention allows for rapid installation and disassembly, flexible multi-degree-of-freedom adjustment, and easy switching of detection angles during operation, as well as adaptation to different reactor top cover diameters. During the alignment inspection of the reactor top cover during hoisting, it can minimize blind spots, increase the success rate of alignment inspection, and avoid malfunctions or accidents caused by misalignment. The use of radiation-resistant and lightweight materials minimizes the weight of parts, preventing excessive bending and deformation of cantilever parts that could hinder alignment, ensuring accurate alignment of the vision elements without misalignment or vibration, and guaranteeing operational stability.
[0024] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A multi-degree-of-freedom adjustment structure for the visual element of a radiation-resistant video centering tool, characterized in that: It includes a top cover support cylinder, on which a camera probe motor rotation drive box is installed, and on which a transverse support rod assembly is also installed, with a camera probe installed at the end of the transverse support rod assembly; The camera probe motor rotation drive box is used as the R-axis position adjustment drive for the camera probe rotation; the lateral support rod assembly includes a telescopic carbon rod, which is used as the lateral degree of freedom adjustment drive; the combination forms a multi-degree-of-freedom adjustment structure for the radiation-resistant video centering tool vision element.
2. The multi-degree-of-freedom adjustment structure for the visual element of a radiation-resistant video centering tool according to claim 1, characterized in that: The transverse support rod assembly also includes a camera sleeve mounted on the top cover support cylinder. The carbon rod is slidably mounted inside the camera sleeve, and the end of the camera sleeve is provided with a carbon rod tensioning sleeve A and a carbon rod tensioning sleeve B corresponding to the carbon rod.
3. The multi-degree-of-freedom adjustment structure for the visual element of a radiation-resistant video centering tool according to claim 2, characterized in that: The end of the camera sleeve is equipped with a limiting pin corresponding to the carbon rod. The carbon rod is designed with a groove, and the limiting pin can move within the groove. The outer diameter of the carbon rod is smaller than the inner diameter of the camera sleeve. After the carbon rod is installed and inserted into the camera sleeve, the limiting pin is locked into the carbon rod groove. When adjusting the distance the camera probe extends, the carbon rod and the camera probe as a whole can be adjusted to move away from or closer to the camera sleeve to form an adjustable structure. After adjusting to the target position, the carbon rod tensioning sleeve B can be rotated in conjunction with the carbon rod tensioning sleeve A to lock the carbon rod part onto the camera sleeve.
4. The multi-degree-of-freedom adjustment structure for the visual element of a radiation-resistant video centering tool according to claim 1, characterized in that: The camera probe motor rotation drive box consists of a housing, a drive motor, and transmission gears. By controlling the motor speed and direction, it achieves smooth rotation and precise positioning of the transverse support rod assembly and the probe, ensuring operational flexibility and safety in different work positions.
5. The multi-degree-of-freedom adjustment structure for the visual element of a radiation-resistant video centering tool according to claim 4, characterized in that: The camera probe motor rotation drive box consists of an upper cover, a gearbox lower cover, a motor, a motor bracket A, a motor bracket B, a pinion, a large gear, bearings, pins, elastic plungers, a rotation angle sensing plate, and a sensing plate bracket. The motor and pinion are fastened together and locked onto the motor bracket B.