Automatic slide moving device for fuel rod transillumination

Abstract

The present invention belongs to the field of machinery, specifically relating to an automatic film moving device for fuel rod radiography. A stud is connected to a vertical column; an adjustment rod is connected to a hollow plate, and a spring is mounted on the adjustment rod. A cylinder is connected to a cylinder fixing plate and a pressure plate, respectively. The cylinder fixing plate is connected to a first slider, and the cylinder fixing plate is magnetically connected to a magnetic block. A bearing is connected to the adjustment rod and an intermediate plate through a tolerance fit. The intermediate plate is connected to a connecting plate. There are four guide rods: the upper two guide rods are connected to the vertical column and the first slider, respectively, and the lower two guide rods are connected to the vertical column and the second slider, respectively. The second slider is connected to the intermediate plate. A magnetic ball is mounted on the cylinder fixing plate, and the magnetic ball is magnetically attracted to the magnetic block. The magnetic block is magnetically attracted to the magnetic ball, and the magnetic block is fixed to the connecting plate. The connecting plate fixes the connecting block, and the electric cylinder is connected to the connecting block. Advantages of this device include: increased sensitivity of the image quality meter on the film after imaging, and a 50% increase in film moving efficiency.

Description

Technical Field

[0001] The invention belongs to the field of machinery, and in particular relates to an automatic sheet moving device for fuel rod transillumination. Background Art

[0002] After the lower and upper end plugs of the fuel rods are welded, X-ray inspection is required to determine whether there are any internal defects. The X-ray-film method currently used is mainly to image the fuel rods using industrial film. After darkroom processing, the images of the upper and lower ring welds and heat-affected zones of the fuel rods are obtained on the film. The fuel rods are then manually judged for internal defects.

[0003] X-ray inspections generally require photographing three locations on the fuel rod. To save film and allow for evaluation on the same film, the film must be shifted and rotated to match the angles so that the image of each position appears at the corresponding location on the film after the fuel rod is rotated (the three angles of rotation of the fuel rod correspond to three areas of the film). Currently, domestic nuclear fuel unit-related units mainly use the following two methods:

[0004] The first method is to manually move the film (manually press the film on the compensation block), which has the advantage of ensuring high sensitivity but the disadvantage of low efficiency.

[0005] Another method is to design and manufacture film moving equipment. However, although this method can be automated, the sensitivity of the film after radiography cannot be further improved due to mechanical interference and other factors (the bottom plate of the film-carrying trolley is thick, and the trolley will be raised a certain distance to avoid mechanical interference. For this reason, there is a certain distance between the film and the compensation block). In addition, during the radiography process, a pressure plate is used to manually press the film. During the manual film pressing process, since the pressure plate is long and one end is far away from the operator, the position of the film and the pressure applied are different due to the different heights, arm lengths, and strengths of the operators. Occasionally, the film is not pressed tightly, resulting in blurred images on the film. Once the image is blurred, it will interfere with the judgment of the assessment area. At this time, the photo needs to be taken again (to ensure that the defective fuel rods can be accurately picked out), which is time-consuming and labor-intensive. Therefore, a set of automatic film moving equipment for fuel rod radiography needs to be designed. Summary of the Invention

[0006] The object of the present invention is to provide an automatic film moving device for fuel rod transillumination, which can solve the problems of low sensitivity of the image quality meter, occasional blurring of the film image after transillumination, increased labor intensity of repeated transillumination after blurred film, and unclear film image caused by manual film pressing.

[0007] The technical solution of the present invention is as follows: an automatic sheet moving device for fuel rod transillumination, comprising a stud, a column, an adjusting rod, a spring, a cylinder, a connecting block, an electric cylinder, a magnetic ball, a magnetic block, a connecting plate, a cylinder fixing plate, an intermediate plate, a hollow plate, a bearing, a guide rod, a first slider, and a second slider;

[0008] The stud is connected to the column;

[0009] The adjusting rod is connected to the hollow plate, and a spring is sleeved on the adjusting rod;

[0010] The cylinder is connected to the cylinder fixing plate and the pressure plate respectively.

[0011] The cylinder fixing plate is connected to the first slider, the cylinder fixing plate is connected to the magnetic block through magnetic force, and the bearing is connected to the adjusting rod and the middle plate respectively through tolerance fit;

[0012] The middle plate is connected to the connecting plate.

[0013] There are four guide rods in total, the two upper guide rods are connected to the column and the first slider respectively, and the two lower guide rods are connected to the column and the second slider respectively;

[0014] The second slider is connected to the middle plate;

[0015] The magnetic ball is mounted on the cylinder fixing plate, the magnetic ball and the magnetic block are attracted to each other by magnetic force, the magnetic block and the magnetic ball are attracted to each other by magnetic force, and the magnetic block is fixed on the connecting plate;

[0016] The connecting plate fixes the connecting block, and the electric cylinder is connected to the connecting block.

[0017] The magnetic block screw is fixed on the connecting plate through a thread structure, and the magnetic block screw is used to fix the magnetic block on the connecting plate.

[0018] The bottom of the stud is a finely machined surface.

[0019] A nut is also installed between the adjusting rod and the hollow plate.

[0020] The cylinder is connected to the cylinder fixing plate and the pressing plate respectively through a threaded structure.

[0021] The cylinder and the cylinder fixing plate are connected via cylinder screws.

[0022] The cylinder connecting screws fix the pad to the cylinder fixing plate.

[0023] A layer of sponge is attached to the lower side of the pressing plate near the film side.

[0024] The connecting plate is connected to the connecting block screw and the magnetic block screw respectively through a threaded structure.

[0025] The connecting plate is connected to the connecting plate screws through tolerance fitting and is fixed to the middle plate by the connecting plate screws.

[0026] The beneficial effects of the present invention are as follows: (1) the image quality meter on the film after taking the photo is more sensitive (sensitivity is increased by one level); (2) the image on the film after transillumination is clear and no blur occurs; (3) the number of retakes due to unclear images on the film after transillumination is reduced to zero; (4) the film is moved automatically, including automatic film pressing, which improves the automation level; (5) the film moving efficiency is improved by 50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view of an automatic slide moving device for fuel rod transillumination provided by the present invention;

[0028] Figure 2 This is a top view of an automatic slide-moving device for fuel rod transillumination provided by the present invention;

[0029] Figure 3 This is a left side view of an automatic slide moving device for fuel rod transillumination provided by the present invention;

[0030] Figure 4 This is a three-dimensional diagram of an automatic slide moving device for fuel rod transillumination provided by the present invention.

[0031] In the figure: 1 stud, 2 column, 3 adjusting rod, 4 spring, 5 cylinder connecting screw, 6 spacer, 7 cylinder, 8 connecting block, 9 connecting block screw, 10 electric cylinder, 11 magnetic ball, 12 magnetic block, 13 magnetic block screw, 14 connecting plate screw, 15 connecting plate, 16 cylinder fixing plate, 17 middle plate, 18 pressure plate, 19 hollow plate, 20 nut, 21 bearing, 22 guide rod, 23 first slider, 24 second slider. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] An automatic sheet moving device for fuel rod radiography includes a stud 1, a column 2, an adjusting rod 3, a spring 4, a cylinder connecting screw 5, a spacer 6, a cylinder 7, a connecting block 8, a connecting block screw 9, an electric cylinder 10, a magnetic ball 11, a magnetic block 12, a magnetic block screw 13, a connecting plate screw 14, a connecting plate 15, a cylinder fixing plate 16, an intermediate plate 17, a pressure plate 18, a hollow plate 19, a nut 20, a bearing 21, a guide rod 22, a first slider 23 and a second slider 24.

[0034] like Figure 1-4 As shown, the stud 1 is connected to the column 2 through a threaded structure. There are 4 studs 1 and the column 2 in total. The stud 1 is used to adjust the height of the column 2. The column 2 can be raised or lowered by rotating the stud 1. Quick positioning can be achieved by adjusting the stud 1 (since the position of the electric cylinder mounting hole is already located, it needs to be adjusted according to the position of the mounting hole during installation). The bottom of the stud 1 is a finely machined surface. After it extends out of the column 2, it can serve as a support and reference surface.

[0035] The adjusting rod 3 is connected to the hollow plate 19 through a threaded structure. A nut 20 is installed between the adjusting rod 3 and the hollow plate 19. A spring 4 is mounted on the adjusting rod 3. The adjusting rod 3 and the spring 4 are four parts in total. The adjusting rod 3 is mainly used to connect and fix the hollow plate 19. The function of the spring 4 is to pull the hollow plate 19 back when it needs to return to its original position.

[0036] The cylinder 7 is connected to the cylinder fixing plate 16 and the pressure plate 18 respectively through a threaded structure, and the cylinder 7 and the cylinder fixing plate 16 are connected by the cylinder screw 5. The spacer 6 is fixed to the cylinder fixing plate 16 by the cylinder connecting screw 5 through tolerance fit. The cylinder 7 is subjected to the gravity of the spacer 6 pressed on it. There are two cylinders 7 in total, which are responsible for providing downward power to the pressure plate 18 so that the pressure plate can press the film tightly against the compensation block. There are two spacers 6 in total, which are used to adjust the distance from the pressure plate 18 to the hollow plate 19 that carries the film. By adjusting the thickness of the spacer 6 (which can be made into multiple thin sheets of the same thickness, stacked together to form a spacer), the pressure plate 18 can press the film tightly.

[0037] The cylinder fixing plate 16 is used to install and fix the cylinder 7, and is equipped with the following components: cylinder connecting screws 5, spacers 6, cylinder 7, and pressure plate 18. The cylinder fixing plate 16 is connected to the cylinder 7 and the first slider 23 respectively through a threaded structure, and the cylinder fixing plate 16 is connected to the magnetic block 12 through magnetic force. The intermediate plate 17 provides support and fixation for the adjusting rod 3, so that the adjusting rod 3 can fix the hollow plate 19. Bearings are installed on both sides of the intermediate plate 17 to facilitate the precise lifting and lowering of the adjusting rod 3, and with low wear, ensuring long-term use. The intermediate plate 17 is connected to the connecting plate 15 through a threaded structure, and the intermediate plate 17 is connected to the bearing 21 through a tolerance fit. The pressure plate 18 is used to press the film onto the compensation block. A layer of sponge is attached to the bottom of the pressure plate 18 near the film side to ensure that air is discharged and the film surface is smooth. The pressure plate 18 is connected to the cylinder 7 through a threaded structure. The hollow plate 19 is used to support the film. Its interior is hollowed out, with stepped edges around the edges. It supports the film on all four sides to prevent it from falling. The hollow center ensures that the transilluminated portion of the film is in close contact with the compensation block, improving transillumination sensitivity. The hollow plate 19 is connected to the adjustment rod 3 via a threaded structure. Nut 20 locks the hollow plate 19 to prevent displacement during use. Bearing 21 provides auxiliary support for the reciprocating motion of the adjustment rod 3, reducing wear during movement. Bearing 21 is connected to the adjustment rod 3 and the intermediate plate 17 through tolerance fit.

[0038] The guide rods 22 are smooth shafts with a precision-machined surface. They enable the smooth movement of the components mounted on them. There are four guide rods 22: two on the left and two on the top, with adjacent rods arranged in parallel. The two upper guide rods 22 are connected to the column 2 and the first slider 23, respectively, through a tolerance fit. The two lower guide rods 22 are connected to the column 2 and the second slider 24, respectively, through a tolerance fit. The first slider 23 is used to support the cylinder connecting screws 5, spacer 6, cylinder 7, cylinder mounting plate 16, and pressure plate 18, which slide freely on the guide rods 22. The first slider 23 is connected to the cylinder mounting plate 16 via a threaded structure.

[0039] The second slider 24 is used to carry the middle plate 17 and drive it to slide freely on the guide rod 22. The second slider 24 is connected to the middle plate 17 through a threaded structure.

[0040] Magnetic balls 11 are used to connect the magnetic block 12 to the cylinder mounting plate 16. Three magnetic balls 11 are installed in the cylinder mounting plate 16, near the electric cylinder rod. They are arranged in a triangular pattern. After a transillumination cycle, the film transfer device returns the film to its initial position. If the cylinder mounting plate 16 is not connected to the electric cylinder 10, the film on the hollow plate 19 will remain in its current position, preventing the new film from moving from its initial position to the designated position during the next film transfer. If the connecting plate 15 is connected to the electric cylinder 10 using bolts or other structures, manual film replacement becomes difficult, primarily because manual film replacement requires placing the film onto the hollow plate from above. Therefore, a magnetic connection is considered to connect the electric cylinder 10 to the cylinder mounting plate 16. Magnetic balls 11 are installed on the cylinder mounting plate 16 near the electric cylinder. They are magnetically attracted to the magnetic block 12, but do not contact it. The magnetic block 12 is a magnet that connects the connecting plate 15 and the cylinder mounting plate 16. The magnetic block 12 is attracted to the magnetic ball 11 by magnetic force, but they are not in contact. The magnetic block 12 is fixed to the connecting plate 15 by a threaded structure. The magnetic block screw 13 is fixed to the connecting plate 15 by a threaded structure. The magnetic block screw 13 is used to fix the magnetic block 12 to the connecting plate 15. The connecting plate screw 14 is used to fix the connecting plate 15 and the intermediate plate 17 together, and the intermediate plate 17 is driven to move by the connecting plate 15, so that the film moves. The connecting plate screw 14 is connected to the intermediate plate 17 by a threaded structure. The connecting plate 15 is used to support and fix the connecting block 8. The connecting plate 15 is connected to the connecting plate screw 14 by tolerance fitting, and is fixed to the intermediate plate by the connecting plate screw 14. The connecting plate 15 is connected to the connecting block screw 9 and the magnetic block screw 13 respectively by a threaded structure.

[0041] The connecting block 8 is fixed to the connecting plate 15 by the connecting block screw 9 through a threaded structure. The electric cylinder 10 is connected to the connecting block 8 through tolerance fitting. The connecting block 8 is used to connect the electric cylinder 10 and other components. It is made into a U-shaped structure. The nut on the electric cylinder rod of the electric cylinder 10 is inserted into the U-shaped groove to achieve connection. Since the cantilever is long during the movement of the electric cylinder rod, if a hole-type or other connection method is adopted, the electric cylinder rod may encounter resistance during movement. After a period of use, the electric cylinder rod is prone to deformation. In severe cases, it may also cause the electric cylinder to stall and cause the electric cylinder to be scrapped. For this reason, the connection with the electric cylinder rod is designed to be a U-shaped structure. During the movement, the electric cylinder rod only needs to be hung in the U-shaped groove. The electric cylinder rod can have a certain range of displacement in the U-shaped groove. The electric cylinder 10 provides power for the film moving device. It realizes the movement of the film carried on it to different positions through the extension and contraction of the electric cylinder rod.

[0042] The column 2 is fixed with four guide rods 22 by tolerance fit. After the height is adjusted (after the cylinder rod adapts to the installation position), the stud 1 needs to be fixed in the lead chamber using a threaded structure.

[0043] When the cylinder 7 is pressed down and drives the connected pressure plate 18 to move downward, it will drive the hollow plate 19 to move downward together, and the spring 4 is compressed at this time; when the cylinder 7 moves upward and returns to its original position, the spring 4 is needed to pull the hollow plate back to its original position through its elastic force, otherwise the hollow plate 19 will produce mechanical interference with the compensation block during the movement of the sheet moving device.

[0044] Stud 1 is connected to column 2 and the lead chamber via threads. Column 2 is connected to stud 1 via threads and to guide rod 22 via a tolerance fit. Adjustment rod 3 is connected to spring 4 via pressure, to bearing 21 via a tolerance fit, and to hollow plate 19 via threads. Spring 4 is connected to adjustment rod 3 via pressure and to intermediate plate 17 via elastic force. Cylinder connecting screw 5 is connected to cylinder 7 via threads. Spacer 6 is connected to cylinder 7 via pressure. Cylinder 7 is connected to spacer 6 via pressure and to intermediate plate 17 and pressure plate 18 via threads. Connecting block 8 is secured to connecting plate 15 via threaded pressure by connecting block screw 9 and is connected to electric cylinder 10 via tension. Connecting block screw 9 is connected to connecting plate 15 via threads. Electric cylinder 10 is connected to connecting block 8 via tension. Magnetic ball 11 is installed in a side hole of cylinder fixing plate 16 and has a certain attraction to magnetic block 12, but does not contact it. The magnetic block 12 is connected to the cylinder fixing plate 16 by suction and to the connecting plate 15 by a threaded structure. The magnetic block screw 13 is fixed to the connecting plate 15 by a threaded structure. The connecting plate screw 14 is connected to the intermediate plate 17 by a threaded structure. The connecting plate 15 is connected to the connecting block screw 9 and the magnetic block screw 13 respectively by a threaded structure, and is connected to the connecting plate screw 14 and the intermediate plate 17 by pressure. The cylinder mounting plate 16 is connected to the cylinder 7 and the first slider 23 respectively by a threaded structure, and is connected to the spacer 6 by pressure. It contains a magnetic ball 11 and is connected to the magnetic block 12 by magnetic force. The intermediate plate 17 is connected to the bearing 21 by a tolerance fit and to the spring 4 by elastic force. The pressure plate 18 is connected to the cylinder 7 by a threaded structure. The hollow plate 19 is connected to the adjusting rod 3 by a threaded structure and is subjected to the weight of the nut 20. The nut 20 exerts a weight on the hollow plate 19 and is connected to the adjusting rod 3 by a threaded structure. The bearing 21 is connected to the adjustment rod 3 and the intermediate plate 17 through a tolerance fit. The guide rod 22 is connected to the column 2, the first slider 23, and the second slider 24 through a tolerance fit. The first slider 23 is connected to the cylinder fixing plate 16 through a threaded structure and is connected to the guide rod 22 through a tolerance fit. The second slider 24 is connected to the intermediate plate 17 through a threaded structure and is connected to the guide rod 22 through a tolerance fit.

[0045] The innovative features of the present invention are as follows:

[0046] (1) Installation height can be quickly adjusted

[0047] The support structure for the sheet-moving device consists of two parts: stud 1 and column 2. The bottom surface of stud 1 is machined, providing both support and a base for installation. The stud and column are connected by a threaded structure. Adjusting the relative position of stud 1 within column 2 causes column 2 to rise or fall accordingly. Column 2 connects and secures the entire sheet-moving device, enabling the entire system to be raised or lowered.

[0048] (2) U-shaped groove design

[0049] The connection of the electric cylinder rod is made into a U-shaped structure, and the nut on the electric cylinder rod is inserted into the U-shaped groove to achieve connection. Since the cantilever is long during the movement of the electric cylinder rod, if a hole-type or other connection method is adopted, the electric cylinder rod may encounter resistance during movement. After a period of use, the electric cylinder rod is prone to deformation. In severe cases, it may also cause the electric cylinder to stall and cause the electric cylinder to be scrapped. For this reason, the connection with the electric cylinder rod is designed to be a U-shaped structure. During the movement, the electric cylinder rod only needs to be hung in the U-shaped groove, and the electric cylinder rod can have a certain range of offset in the U-shaped groove.

[0050] (3) Magnetic attraction design

[0051] After completing a transillumination, the film moving device will drive the film back to its initial position. If the cylinder fixing plate 16 is not connected to the electric cylinder 10, the film on the hollow plate 19 will remain in its current position. During the next film moving process, the new film cannot be moved from the initial position to the specified position. If the connecting plate 14 is connected to the electric cylinder 10 by bolts or other structures, it will be difficult to manually replace the film. This is mainly because manual film replacement requires placing the film on the hollow plate from above. To this end, it is considered to drill three holes in the cylinder fixing plate 16 near the electric cylinder side and arrange three magnetic balls in a triangular shape. The magnetic balls have magnetic force. The arrangement of three is mainly to increase the suction force of the magnet to ensure that the suction force can drive the movement of the cylinder fixing plate 16 and other parts. The magnetic block 12 is a magnet, which further enhances the mutual magnetic force. The magnetic force satisfies the requirement that the two parts can be freely separated manually and the two parts can be firmly attracted together.

[0052] (4) Spring return design

[0053] To ensure that the film is in close contact with the compensation block below it, the film needs to be pressed down. This process can be carried out by the cylinder 7 driving the pressure plate 18. After the pressure plate 18 is pressed down, it will drive the hollow plate 19 down, so that the film is close to the compensation block. However, when the cylinder 7 rises, it will not drive the hollow plate 19 to rise. During the movement, the hollow plate 19 that has not risen will cause mechanical interference with the compensation block. For this purpose, the adjustment rod 3, spring 4, nut 20, and bearing 21 are designed to form an automatic reset mechanism. When the spring is under pressure from the cylinder 7, the spring 4 is compressed. When the cylinder 7 rises, the spring 4 gradually releases its elastic force and returns to its original position. In this process, the hollow plate 19 is gradually lifted, thereby eliminating mechanical interference.

[0054] (5) Hollow plate design

[0055] To ensure the film adheres tightly to the compensation block beneath it, there must be no obstructions, including air, between the two. To this end, the hollow plate 19 that supports the film is designed with stepped edges, a hollow center, and stepped edges. This allows the film to rest on top, otherwise it would fall through the hollow plate 19. With the hollow center, the cylinder pressure allows the film to adhere tightly to the compensation block (by adjusting the cylinder force and the distance between the cylinder rod and the film). As long as the film adheres tightly to the compensation block, the image quality indicator on the film after transillumination will improve by one level, and the image will not be blurry.

[0056] (6) High sensitivity design

[0057] In addition to ensuring close contact between the film and the compensation block through structural design, the metal pressure plate 18 is designed to prevent radiation scattering after passing through it. Therefore, the pressure plate 18 is filled with lead to provide backscatter protection. Furthermore, since the pressure plate 18 is made of rigid material and directly presses against the film (which is surrounded by a leather cassette), air not promptly expelled during the pressing process can also cause the film to become unclear. Therefore, a layer of sponge is attached to the bottom of the pressure plate 18. The sponge has a certain degree of compressibility, which allows air in the cassette to be expelled during the downward pressure process while maintaining a smooth surface between the film and the pressure plate 18. This design improves sensitivity.

[0058] (7) High-precision film transfer

[0059] The use of the electric cylinder 10, the guide rod 22, and the second slide block 24 makes the entire system very precise, which is conducive to achieving high-precision movement during the sheet transfer process and ensuring the movement effect.

[0060] The method of use of the present invention is as follows:

[0061] Open the lead chamber (the lead chamber is outside and is used to shield X-rays); place the film on the hollow plate 19 (the film moving device is in its original position at this time); replace the lead type label; close the lead chamber; move the film (click the film moving command, the film moving device drives the film from its original position to position 1); turn on the X-ray machine for transillumination; after the transillumination is completed, move the film (click the film moving command, the film moving device drives the film from position 1 to position 2), the fuel rod rotates an angle, and the X-ray machine is turned on for transillumination; after the transillumination is completed, move the film (click the film moving command, the film moving device drives the film from position 2 to position 3), and turn on the X-ray machine for transillumination; after the transillumination is completed, (click the film moving command, the film moving device drives the film from position 3 to its original position); open the lead chamber, take out the film, and obtain the negative film after darkroom processing; manual evaluation; repeat the above actions to continuously complete the transillumination of multiple batches of fuel rods.

[0062] The advantages of the present invention are as follows:

[0063] (1) Easy to change film

[0064] Placing the film before transillumination and taking it out after transillumination both require manual action on the film. The first slider 23 is used under the cylinder fixing plate 16. To replace the film, you only need to manually remove the cylinder fixing plate to take out the film. It is convenient and quick. There are columns 2 on both sides, so there is no need to worry about it sliding out of the limit position and falling.

[0065] (2) Quick installation

[0066] The connection between the electric cylinder rod and the connecting block 8 only needs to be clamped, and most other structures only need a bolt structure to achieve connection. During the installation process, in order to adapt to the position of the electric cylinder rod mounting hole, the height position can be adjusted by selecting studs. By adjusting the four studs, the flatness can be adjusted to ensure that the equipment operates on a horizontal plane.

[0067] (3) The film transfer process is accurate and reliable

[0068] The use of the electric cylinder 10, the guide rod 22, and the second slide block 24 makes the entire system very precise, which is conducive to achieving high-precision movement during the sheet transfer process and ensuring the movement effect.

[0069] (4) The image quality meter on the film is more sensitive

[0070] After taking pictures, the image quality meter on the film is more sensitive (the sensitivity is increased by one level), and the image on the film is clear after transillumination without blurring. The number of reshoots due to unclear images on the film after transillumination is reduced to 0.

[0071] (5) Highly sensitive automation

[0072] In the past, in order to achieve high-sensitivity film images, manual film movement was required, otherwise it would not be possible due to mechanical interference. Now that this equipment has been invented, the high sensitivity requirements of the film can be achieved in an automated way, and the film movement efficiency has also been increased by 50%, further improving the level of automation.

Claims

1. An automatic slide-moving device for fuel rod transillumination, characterized by: It includes a stud, a column, an adjusting rod, a spring, a cylinder, a connecting block, an electric cylinder, a magnetic ball, a magnetic block, a connecting plate, a cylinder fixing plate, an intermediate plate, a hollow plate, a bearing, a guide rod, a first slider and a second slider; The stud is connected to the column; The adjusting rod is connected to the hollow plate, and a spring is sleeved on the adjusting rod; The cylinder is connected to the cylinder fixing plate and the pressure plate respectively. The cylinder fixing plate is connected to the first slider, and the cylinder fixing plate is connected to the magnetic block through magnetic force. The bearing is connected to the adjusting rod and the intermediate plate respectively through tolerance fit; The middle plate is connected to the connecting plate. There are four guide rods in total, the two upper guide rods are connected to the column and the first slider respectively, and the two lower guide rods are connected to the column and the second slider respectively; The second slider is connected to the middle plate; The magnetic ball is mounted on the cylinder fixing plate, the magnetic ball and the magnetic block are attracted to each other by magnetic force, the magnetic block and the magnetic ball are attracted to each other by magnetic force, and the magnetic block is fixed on the connecting plate; The connecting plate fixes the connecting block, and the electric cylinder is connected to the connecting block; The magnetic block screw is fixed to the connecting plate through a thread structure, and the magnetic block screw is used to fix the magnetic block to the connecting plate; A nut is also installed between the adjusting rod and the hollow plate.

2. The automatic slide moving device for fuel rod transillumination according to claim 1, characterized in that: The bottom of the stud is a finely machined surface.

3. The automatic slide moving device for fuel rod transillumination according to claim 1, characterized in that: The cylinder is connected to the cylinder fixing plate and the pressing plate respectively through a threaded structure.

4. The automatic slide moving device for fuel rod transillumination according to claim 1, characterized in that: The cylinder and the cylinder fixing plate are connected via cylinder screws.

5. The automatic slide moving device for fuel rod transillumination according to claim 1, characterized in that: The cylinder connecting screws fix the pad to the cylinder fixing plate.

6. The automatic slide moving device for fuel rod transillumination according to claim 1, characterized in that: A layer of sponge is attached to the lower side of the pressing plate near the film side.

7. The automatic slide moving device for fuel rod transillumination according to claim 1, characterized in that: The connecting plate is connected to the connecting block screw and the magnetic block screw respectively through a threaded structure.

8. The automatic slide moving device for fuel rod transillumination according to claim 1, characterized in that: The connecting plate is connected to the connecting plate screws through tolerance fitting and is fixed to the middle plate by the connecting plate screws.

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