Automatic turnover device suitable for radioactive places

Abstract

The utility model provides an automatic turnover device suitable for a radioactive place, which comprises a door frame component embedded on a corresponding floor slab, a cover plate mounted on the door frame component and capable of automatically turning over; and a sensor for monitoring whether an object approaches or not and a camera are arranged near the cover plate. The sensor and the camera are arranged near the cover plate, and the lifting process of materials is remotely monitored through the sensor and the camera, so that the purpose that an operator can still complete the lifting operation even if the operator does not arrive at a lifting site is achieved; and in addition, the device realizes visual operation of the hoisted materials, so that the transportation of the hoisted materials is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical devices used for material lifting related operations in radioactive sites, and in particular to an automatic turning device suitable for radioactive sites. Background Art

[0002] Radioactive waste storage facilities are divided into four levels: red, orange, green, and white zones, depending on the radioactivity of the materials handled within. The red zone is strictly off-limits to personnel, the orange zone has strict entry controls, the green zone allows personnel to enter provided they wear protective clothing, and the white zone is free of radioactivity concerns.

[0003] Materials handled in radioactive plants are often radioactive, and direct contact can pose a risk to human health. Lifting operations can reduce direct contact between personnel and radioactive materials, thereby reducing radiation risks. Lifting also allows for long-distance, automated material handling, minimizing safety hazards associated with manual handling. This method of operation is safer and more reliable in radioactive environments.

[0004] Currently, materials in radioactive plants can be lifted using a variety of methods, including bridge cranes, gantry cranes, and jib cranes. However, when lifting materials between different floors of a radioactive plant, particularly within a red zone, or between floors within the same red zone, there is a pressing challenge: how to safely and accurately lift the materials to the target area without requiring operators to be present at the lifting site. Utility Model Content

[0005] The purpose of the utility model is to solve the defects of the above-mentioned prior art and provide an automatic turning device suitable for radioactive places.

[0006] An automatic flipping device suitable for radioactive sites comprises: a door frame assembly embedded in a corresponding floor slab, a cover plate mounted on the door frame assembly, and the cover plate can be automatically flipped; a sensor and a camera for monitoring whether there is an object approaching are arranged near the cover plate.

[0007] Furthermore, in the automatic flipping device suitable for radioactive sites as described above, the shape and size of the outer edge of the cover plate are adapted to the inner edge and size of the door frame assembly;

[0008] One side of the cover plate is hingedly connected to a corresponding side of the door frame assembly via a hinge;

[0009] A steel wire is fixed on the other side of the cover plate, and the other end of the steel wire is connected to a reduction motor. The reduction motor contracts the steel wire to open or close the cover plate.

[0010] An upper sensor for monitoring whether an object approaches is embedded in the upper part of the cover plate, and a lower sensor for monitoring whether an object approaches is embedded in the lower part of the cover plate; the camera is used to capture whether an object approaches the cover plate.

[0011] Furthermore, the automatic turning device suitable for radioactive sites as described above has sensors embedded on the four inner walls of the door frame assembly for monitoring whether an object passes through.

[0012] Furthermore, in the automatic flipping device suitable for radioactive sites as described above, the upper sensor is embedded in the center of the upper surface of the cover; and the lower sensor is embedded on a side of the cover close to the opening.

[0013] Furthermore, in the automatic flipping device suitable for radioactive sites as described above, a column is vertically fixed on one side of the cover plate, and the reduction motor is installed on the top of the column; the middle part of the column is triangularly supported by a diagonal brace.

[0014] Furthermore, in the automatic flipping device suitable for radioactive sites as described above, a limiting mechanism for limiting the flipping angle of the cover is installed on the column, and the limiting mechanism can limit the flipping angle of the cover to a range of less than 90 degrees.

[0015] Furthermore, the automatic flipping device suitable for radioactive sites as described above is provided with fireproof strips and sealing strips between the edge of the door frame assembly and the cover plate, and between the door frame assembly and the edge of the floor opening.

[0016] Furthermore, in the automatic flipping device suitable for radioactive sites as described above, a roller is provided on the side of the reduction motor, and the roller shaft of the roller is fixedly connected to the output shaft of the reduction motor; one end of the steel wire is wound around the roller, and the other end is fixed to the cover plate.

[0017] Furthermore, in the automatic turning device suitable for radioactive sites as described above, the cover plate is made of stainless steel with lead plates sandwiched inside, and its thickness is greater than or equal to 100 cm.

[0018] Furthermore, in the automatic flipping device suitable for radioactive sites as described above, the size of the door frame assembly is: 0.5m*0.5m-1.2m*1.2m.

[0019] Beneficial effects:

[0020] The automatic turning device provided by the utility model is suitable for radioactive sites. By arranging sensors and cameras near the cover plate, the lifting process of materials can be remotely monitored by the sensors and cameras, so that the operator can complete the lifting operation even if he does not go to the lifting site. In addition, the device realizes the visual operation of lifting materials, thereby making the transportation of lifted materials safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of the automatic flipping device provided by the utility model and applicable to radioactive sites;

[0022] Figure 2 A top view of the automatic flipping device provided by the utility model and applicable to radioactive sites;

[0023] Reference numerals:

[0024] 1-Door frame assembly; 2-Cover plate; 3-Steel wire; 4-Fireproof rubber strip and sealing strip; 5-Hinge; 6-Fixed base; 7-Drum; 8-Reduction motor; 9-Fixed anchor bolt; 10-Diagonal brace; 11-Column; 12-Limiting mechanism; 13-Upper sensor; 14-Lower sensor; 15-Sensor. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the present invention more clear, the following provides a clear and complete description of the technical solutions of the present invention. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0026] Figure 1 This is a front view of the automatic flipping device provided by the utility model, which is suitable for radioactive places. Figure 1 As shown, the device includes: a door frame assembly 1 embedded in the corresponding floor slab, a cover plate 2 is installed on the door frame assembly 1, the cover plate 2 can be automatically flipped, and a sensor and a camera for monitoring whether there are objects approaching are arranged near the cover plate 2.

[0027] The purpose of the present utility model is to provide a device that can lift materials safely between various areas of a radioactive plant, especially between red zones on different floors of a radioactive plant, even in the absence of an operator. In order to achieve this purpose, the present application first excavates a hole on the corresponding floor slab where the material needs to be lifted, and then embeds a door frame assembly 1 on the excavated hole, and installs a cover plate 2 that can automatically flip over on the door frame assembly 1. At the same time, a sensor and a camera that can monitor whether there is an object approaching the cover plate 2 are arranged near the cover plate 2, and the information obtained by the sensor and the camera is used to determine whether to open or close the cover plate 2.

[0028] Among them, the material and thickness of the cover plate 2 are set according to the corrosion resistance and radioactivity level of the factory building, and the fire resistance limit of the cover plate shall not be lower than the shortest fire resistance limit time required by the fire hazard category of the factory building. The camera is a radiation-resistant camera, which is installed in an unobstructed area on the opposite side of the cover plate and can be rotated to a certain angle to adjust the monitoring angle of view; and since the radioactivity of different factories is different, this application can select corresponding radiation-resistant cameras according to the different radioactivity levels of the factories. Since the red and orange zones of radioactive factories have high radioactivity intensities, there is a high risk for personnel to enter. Radiation-resistant cameras can replace manual monitoring, reduce the exposure time of personnel in these high-risk areas, and thus reduce the potential harm of radiation to the human body; in addition, radiation-resistant cameras can continuously monitor the conditions in the radioactive factory building, and promptly detect and report any abnormal conditions, such as material leakage, equipment failure, etc., to ensure that personnel can quickly take safety measures; and radiation-resistant cameras can be remotely monitored through the network, so that monitoring personnel can monitor and manage the radioactive factory building in real time in a safe area, thereby improving the work efficiency of the staff and reducing the work intensity of the staff.

[0029] In addition, the sensors and cameras provided by the device of the present application are connected to the electric control cabinet through a transmission line. The electric control cabinet adopts an integrated electric control cabinet, and the PLC control panel and the video monitoring system are integrated into the electric control cabinet, so that the operator can perform hoisting operations through the PLC control touch screen and real-time video monitoring images on the electric control cabinet panel during operation. The electric control cabinet panel is mainly composed of a cover indicator light, a cover switch, a sensor indicator light, a monitoring display (video monitoring), a touch control screen (PLC control panel), etc. The opening and closing status of the cover can be monitored in real time through the monitoring display, and the transportation process of the lifting equipment (material barrel) can be monitored at the same time. When an operator mistakenly enters the lifting area, a pop-up alarm will be issued on the monitoring display. The alarm signal needs to be manually eliminated by the operator before the lifting operation can be carried out.

[0030] The installation location of the electric control cabinet is determined according to the radioactivity level of the hoisted materials. The electric control cabinet can be placed outside the hoisting room. If there are multiple floors of hoisting, the electric control cabinet can be placed inside the control room.

[0031] The automatic turning device provided by the utility model is suitable for radioactive sites. By arranging sensors and cameras near the cover plate, visual operation of the lifting equipment is achieved in the absence of an operator, thereby making the transportation of the lifted materials safer and more reliable.

[0032] Furthermore, the present application provides an embodiment that can automatically flip the cover, such as Figure 2 As shown, the shape and size of the outer edge of the cover plate 2 are adapted to the inner edge and size of the door frame assembly 1; one side of the cover plate 2 is hingedly connected to the corresponding side of the door frame assembly 1 via a hinge 5; a steel wire 3 is fixed to the other side of the cover plate 2, and the other end of the steel wire 3 is retracted by a reduction motor 8 to open or close the cover plate 2; an upper sensor 13 for monitoring whether there is an object approaching is embedded in the upper part of the cover plate 2, and a lower sensor 14 for monitoring whether there is an object approaching is embedded in the lower part of the cover plate 2, and a camera is used to capture whether there is an object approaching the cover plate 2.

[0033] Specifically, the cover 2 is a rectangular structure, with two left and right hinges 5 provided on one side of the cover 2. The two hinges 5 enable the cover 2 to flip freely. At the same time, a steel wire 3 is fixed to the opposite side of the cover 2 where the hinge 5 is installed. One end of the steel wire 3 is fixed to the cover 2, and the other end is wrapped around the shaft of the reduction motor 8. The steel wire 3 is retracted by turning the reduction motor 8 on and off, thereby opening or closing the cover. The upper sensor 13 and the lower sensor 14 can be distance sensors, specifically infrared sensors, ultrasonic sensors, photoelectric sensors, etc., as long as they can sense whether an object is approaching the cover 2.

[0034] When the upper sensor 13 or the lower sensor 14 senses that the material barrel is transported to a certain distance above or below the cover, the cover is automatically opened through the electric control cabinet to ensure the transportation safety of the hoisted materials.

[0035] Furthermore, sensors 15 for monitoring whether an object passes through are respectively embedded on the four inner walls of the door frame assembly 1 .

[0036] The present invention embeds a sensor 15 in the door frame assembly 1, and uses the sensor 15 to sense whether there are still material barrels or lifting devices such as starter hooks in the area of ​​the door frame assembly 1, thereby avoiding damage to the material barrels or lifting devices when the cover is closed.

[0037] Furthermore, the upper sensor 13 is embedded in the center of the upper surface of the cover plate 2; and the lower sensor 14 is embedded in a side of the cover plate 2 close to the opening.

[0038] The upper sensor 13 and the lower sensor 14 of the present invention are embedded in different positions. The reason is that the upper sensor 13 is used to sense the distance between the material hoisted down from the top of the cover and the cover; and the lower sensor 14 is used on the one hand to sense the distance between the hoisted material from the bottom of the cover and the bottom of the cover, and on the other hand to detect whether there are foreign objects in the closed area when the cover is closed. The functions of the two are not exactly the same, so the embedding positions are different.

[0039] Further, if Figure 1 As shown, a column 11 is vertically fixed to one side of the cover plate 2. The cross section of the column 11 is an I-shaped structure. The reduction motor 8 is installed on the top of the column 11. The middle part of the column 11 is triangularly supported by a diagonal brace 10. One end of the diagonal brace 10 is fixed obliquely to the middle part of the I-shaped column 11, and the other end is fixed to the ground of the floor slab via a gasket and a fixing anchor 9.

[0040] Specifically, the column 11 is vertically fixed on the corresponding floor, and the diagonal brace 10 is used to provide triangular support for the column 11, so that the column 11 is fixed more firmly, and the reduction motor 8 can make the flipping of the cover plate more stable during the process of retracting the steel wire, avoiding the collision between the cover plate and the material barrel, thereby further improving the safety and accuracy of the lifting of materials during the lifting process.

[0041] Furthermore, a limiting mechanism 12 for limiting the flipping angle of the cover plate 2 is installed on the column 11. The limiting mechanism 12 can limit the flipping angle of the cover plate 2 to a range less than 90 degrees.

[0042] Specifically, the limiting mechanism 12 prevents the cover 2 from tilting beyond 90 degrees, preventing the motor from reversing. Furthermore, when the cover's opening and closing angle is less than 90 degrees, the cover's own weight can be used to close the cover, thereby reducing the power consumption of the reduction motor. The limiting mechanism 12 can be constructed by welding an angle steel with a rubber cushion wrapped around the angle steel.

[0043] Furthermore, fireproof strips and sealing strips 4 are provided between the edges of the door frame assembly 1 and the cover plate 2, and between the door frame assembly 1 and the edge of the floor opening.

[0044] Specifically, since different rooms in a radioactive plant have different requirements, this application ensures the safety of different rooms by filling fireproof, radiation-resistant, and corrosion-resistant fireproof strips and sealing strips between the edges of the door frame assembly 1 and the cover plate 2, and between the edges of the door frame assembly 1 and the floor opening.

[0045] Furthermore, this embodiment provides a specific method for installing the steel wire: a roller 7 is provided on the side of the reduction motor 8, and the roller shaft of the roller 7 is fixedly connected to the output shaft of the reduction motor 8; one end of the steel wire 3 is wound around the roller 7, and the other end is fixed to the cover plate 2. The roller 7 is fixed to the side of the reduction motor 8 via a fixed base 6.

[0046] Furthermore, in order to achieve the purpose of shielding radioactivity, the cover plate 2 of the present application is made of stainless steel with lead plate sandwiched inside, and its thickness is not less than 100 cm.

[0047] Furthermore, the size of the door frame assembly 1 is: 0.5m*0.5m-1.2m*1.2m.

[0048] The size of the door frame assembly 1 is set according to actual usage requirements. Generally, the size of the door frame assembly should not be too large. If the size is too large, the weight of the cover itself will also be too large, resulting in a phenomenon that one motor cannot open the cover. If multiple motors are started and closed at the same time to control the opening and closing of the cover, there will be synchronization problems, which increases the operation risk. Therefore, the size of the door frame assembly 1 provided in this application is controlled between 0.5m*0.5m-1.2m*1.2m.

[0049] Furthermore, to prevent the motor from continuing to lift the cover after it reaches the open position and from continuing to work after it reaches the closed position, the present invention provides a travel switch at the motor's open / close position to prevent the motor from continuing to work and thus affecting the service life of the equipment. Furthermore, in the event of an abnormal operating condition during the operation of the electric cover, the present invention also provides a locking anti-fall mechanism.

[0050] There are strict sealing, radiation resistance and corrosion requirements between each room in the radioactive plant. Therefore, the door frame components are generally embedded, that is, secondary grouting holes are reserved for the cover plate during civil construction, and the secondary grouting operation is carried out after the equipment is installed.

[0051] In addition, the electric control cabinet can realize two modes of cover control: automatic and manual. Manual control is only used for inspection and maintenance.

[0052] Manual mode control method:

[0053] Set the conversion switch to manual mode and control the corresponding cover through the start and stop buttons on the control cabinet.

[0054] Automatic mode control method:

[0055] Working condition 1: One-button start cover (suitable for direct transportation of material barrels from top to bottom or bottom to top);

[0056] Control mode: Set the switch to automatic, select operating mode 1 (which simultaneously activates the open signal for all electric covers) on the control cabinet's touchscreen, and open all covers with one click, allowing the material barrel (the container for lifting materials) to be transported continuously from the cover on the first floor to the cover on the upper floors. As each cover is passed, the corresponding sensor indicator turns on. Video monitoring can also be used to assist in determining the transport status of the material barrel.

[0057] Working condition 2: The sensor senses and activates the cover plate on the corresponding floor (applicable to the working condition of transporting material barrels to the designated floor);

[0058] Control mode: Set the switch to automatic mode and select working condition 2 (using sensors to control the opening / closing of the electric cover) through the touch screen on the control cabinet. That is, when the sensor detects that the material barrel has reached a certain height above the electric cover, the cover on the corresponding floor will be automatically activated. After the material barrel passes, the indicator light will light up, indicating that the electric cover has passed. The sensor installed in the electric cover door frame will control the closing of the electric cover. If no foreign objects (mainly material barrels and lifting equipment) are detected in the cover area, the electric cover on that floor will be automatically closed. After the cover is completely closed, the corresponding sensor indicator light will turn off. At the same time, the transportation status of the material barrels can be judged through the video monitoring auxiliary group.

[0059] If an abnormal working condition occurs, the switch can be switched to manual mode to perform emergency stop control of the electric cover.

[0060] The device provided by the utility model can be used for the transportation of barreled / boxed packages of radioactive solid materials, solid waste, etc. on different floors. By arranging sensors on the cover, the electric cover can be automatically opened during the transportation of material barrels on different floors. At the same time, the one-button opening function of the cover can also be realized before the lifting operation, and the auxiliary video monitoring device can be used to ensure that the entire lifting operation process is visualized and controllable.

[0061] The device provided by the utility model realizes the visual and automated lifting operation of radioactive solid materials between different floors. The operator can complete the lifting operation without entering the radioactive site, thereby reducing the harm of radiation to the operator, improving the operator's working environment, and reducing the operator's labor intensity.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An automatic turning device suitable for radioactive sites, characterized in that: include: A door frame assembly (1) is embedded in a corresponding floor slab, a cover plate (2) is mounted on the door frame assembly (1), and the cover plate (2) can be automatically flipped; a sensor and a camera for detecting whether an object approaches are provided near the cover plate (2); The shape and size of the outer edge of the cover plate (2) are adapted to the inner edge and size of the door frame assembly (1); One side of the cover plate (2) is hingedly connected to a corresponding side of the door frame assembly (1) via a hinge (5); A steel wire (3) is fixed on the other side of the cover plate (2), and the other end of the steel wire (3) is connected to a reduction motor (8). The reduction motor (8) contracts the steel wire (3) to open or close the cover plate (2); An upper sensor (13) for monitoring whether an object approaches is embedded in the upper part of the cover plate (2), and a lower sensor (14) for monitoring whether an object approaches is embedded in the lower part of the cover plate (2); the camera is used to assist in monitoring whether a hoisted object approaches or passes through the cover plate (2).

2. The automatic turning device suitable for radioactive sites according to claim 1, characterized in that: Sensors (15) for monitoring whether an object passes through are respectively embedded on the four inner walls of the door frame assembly (1).

3. The automatic turning device suitable for radioactive sites according to claim 1, characterized in that: The upper sensor (13) is embedded in the center of the upper surface of the cover plate (2); and the lower sensor (14) is embedded on a side of the cover plate (2) close to the opening.

4. The automatic turning device suitable for radioactive sites according to claim 1, characterized in that: A column (11) is vertically fixed on one side of the cover plate (2), and the reduction motor (8) is installed on the top of the column (11); the middle part of the column (11) is triangularly supported by a diagonal brace (10).

5. The automatic turning device suitable for radioactive sites according to claim 4, characterized in that: A limiting mechanism (12) for limiting the flipping angle of the cover plate (2) is installed on the upright column (11); the limiting mechanism (12) can limit the flipping angle of the cover plate (2) to a range less than 90 degrees.

6. The automatic turning device suitable for radioactive sites according to claim 2, characterized in that: Fireproof adhesive strips and sealing adhesive strips (4) are provided between the edge of the door frame assembly (1) and the cover plate (2), and between the door frame assembly (1) and the edge of the floor opening.

7. The automatic turning device suitable for radioactive sites according to claim 1, characterized in that: A roller (7) is provided on the side of the reduction motor (8), and the roller shaft of the roller (7) is fixedly connected to the output shaft of the reduction motor (8); one end of the steel wire (3) is wound on the roller (7), and the other end is fixed on the cover plate (2).

8. The automatic turning device suitable for radioactive sites according to claim 1, characterized in that: The cover plate (2) is made of stainless steel with lead plates sandwiched between them, and its thickness is greater than or equal to 100 cm.

9. The automatic turning device suitable for radioactive sites according to claim 1, characterized in that: The dimensions of the door frame assembly (1) are: 0.5m*0.5m-1.2m*1.2m.

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