Radioactive source moving device for shielding detection

Abstract

The utility model discloses a radioactive source moving device for shielding detection, and relates to the field of shielding detection, the radioactive source moving device comprises a frame body, a guide rail assembly and a sliding assembly, the guide rail assembly is installed in the frame body, the sliding assembly is arranged on a shielding sleeve, and the sliding assembly is installed on the guide rail assembly in a sliding mode in the length direction of the frame body and drives the shielding sleeve to slide in the frame body; a plurality of moving wheels are arranged at the bottom of the frame body and drive the frame body to move on the workpiece to be detected in the width direction of the frame body. The frame body, the guide rail assembly, the sliding rail assembly and the moving wheels are utilized, when a workpiece is detected, the shielding sleeve is placed in the frame body, the sliding assembly is installed on the guide rail assembly, and after detection of one point position is completed, the sliding assembly and the guide rail assembly are matched so that the shielding sleeve can rapidly and accurately move to the next point position; meanwhile, after multi-point detection is completed in the length direction of the frame body, the plate body is moved in the width direction of the frame body through the moving wheels, and therefore all-directional point position detection on the workpiece can be conveniently achieved.

Description

Technical Field

[0001] The present application relates to the field of shielding detection, and in particular to a radiation source moving device for shielding detection. Background Art

[0002] With the continuous development of my country's nuclear power industry, the requirements for the shielding effect of nuclear power equipment are becoming higher and higher, and the forms of equipment designed and manufactured are becoming more and more diverse, which brings a series of problems, especially the detection of the shielding performance of equipment. The nuclear power field pays the most attention to nuclear safety, first of all, to ensure the safety of personnel, so the shielding requirements for nuclear power equipment are extremely high.

[0003] At present, shielding inspection of nuclear power equipment is usually carried out by using a radioactive source to simulate actual working conditions. The radioactive source is placed in a shielding cover with a detection channel. The radiation emitted by the radioactive source is emitted to the workpiece to be inspected through the detection channel. The detector on the other side of the workpiece then detects the radiation dose of the radiation passing through the workpiece to determine whether the shielding performance of the workpiece is qualified.

[0004] The workpiece needs to be inspected at multiple points. After completing the inspection of one point, the staff needs to move the shielding cover to the next inspection point. Since the shielding cover is large in size and heavy in weight, it is easy to deviate from the route during movement, which will cause deviations in the inspection points. Utility Model Content

[0005] In order to facilitate the rapid and accurate movement of the shielding sleeve, the present application provides a radiation source moving device for shielding detection.

[0006] The present application provides a radiation source moving device for shielding detection using the following technical solution:

[0007] A radiation source moving device for shielding detection includes a frame, a guide rail assembly and a sliding assembly. The guide rail assembly is installed in the frame along the length direction of the frame, and the sliding assembly is arranged on the shielding sleeve. The sliding assembly is slidably installed on the guide rail assembly along the length direction of the frame and drives the shielding sleeve to slide in the frame. A plurality of moving wheels are arranged at the bottom of the frame, and the moving wheels drive the frame to move on the workpiece to be detected along its own width direction.

[0008] By adopting the above technical solution, when inspecting the workpiece, the shielding sleeve is placed in the frame and the sliding assembly is installed on the guide rail assembly. After completing the inspection of one point, the sliding assembly and the guide rail assembly cooperate to enable the shielding sleeve to move quickly and accurately to the next point. At the same time, after completing multi-point inspection in the length direction of the frame, the plate is moved along the width direction of the frame by the moving wheels, thereby facilitating all-round point inspection of the workpiece.

[0009] Preferably, the guide rail assembly includes two linear guide rails and multiple support frames, the multiple support frames are fixedly installed in the frame body, the linear guide rails are fixedly installed on the support frames along the length direction of the frame body, and the two linear guide rails are located on both sides of the shielding sleeve along the width direction of the frame body; the sliding assembly includes two movable plates and multiple rollers, the two movable plates are arranged on both sides of the shielding sleeve along the width direction of the frame body, the multiple rollers are respectively rotatably arranged at the bottom of the two movable plates, and the rollers are slidably arranged on the linear guide rails.

[0010] By adopting the above technical solution, the shielding sleeve is placed on two linear guides through a movable plate and rollers. The rollers roll on the linear guides, making the movement of the shielding sleeve more convenient and labor-saving. Multiple support frames support the two linear guides, making the shielding sleeve more stable when moving.

[0011] Preferably, the middle portion of the top wall of the linear guide rail protrudes upward to form a limiting portion, the middle portion of the outer peripheral wall of the roller is concave to form a limiting ring groove, and the limiting portion is adapted to be located in the limiting ring groove.

[0012] By adopting the above technical solution, when the roller drives the shielding sleeve to roll, the limiting part on the linear guide rail limits the roller through the limiting ring groove, so that the roller is not easy to shake when rolling on the linear guide rail, thereby making the movement of the shielding sleeve more stable.

[0013] Preferably, it also includes a hanging ring fixedly arranged on the top end of the shielding sleeve, and one end of the linear guide rail extends to the outside of the frame.

[0014] By adopting the above technical solution, when placing the shielding sleeve, use a lifting device to lift the shielding sleeve through the lifting ring, move the shielding sleeve and place the roller on the end of the linear guide outside the frame, and then push the shielding sleeve to slide into the frame, so that the shielding sleeve can be quickly placed in the frame.

[0015] Preferably, it also includes an adapter plate detachably arranged at the bottom end of the shielding sleeve, the bottom end of the adapter plate is downwardly convex in an arc shape and is used to adapt to and detect cylindrical workpieces, and the movable plate is adjustably arranged on the shielding sleeve along the vertical direction.

[0016] By adopting the above technical solution, when the workpiece to be detected is planar, the bottom of the shielding sleeve abuts against the upper surface of the workpiece; when the workpiece to be detected is cylindrical, the adjusting movable plate is moved downward to increase the height of the shielding sleeve, and an adapter plate is installed at the bottom of the shielding sleeve so that the bottom end of the adapter plate abuts against the inner wall of the cylindrical workpiece, thereby making the radiation source moving device suitable for the detection of planar workpieces and cylindrical workpieces.

[0017] Preferably, a lifting plate is fixedly provided at the bottom of the movable plate near one end of the shielding sleeve, the lifting plate fits the inner wall of the shielding sleeve, a fixing piece is passed through the lifting plate, and a plurality of fixing holes are opened on the outer wall of the shielding sleeve in the vertical direction, the fixing piece is inserted into the fixing hole and fixes the lifting plate.

[0018] By adopting the above technical solution, when the position of the movable plate needs to be raised or lowered, first use the lifting equipment to lift the shielding sleeve through the lifting ring, then take out the fixing part and lift the lifting plate, the lifting plate drives the movable plate to be raised or lowered, and after the adjustment is completed, the fixing part is passed through the lifting plate and fixed in the fixing groove to complete the lifting adjustment of the movable plate.

[0019] Preferably, a plurality of support rods are fixedly provided on the side wall of the lifting plate away from the shielding sleeve, the support rods are arranged obliquely, and the ends of the support rods away from the shielding sleeve are fixedly connected to the bottom wall of the movable plate.

[0020] By adopting the above technical solution, the support rod supports the movable plate, making the movable plate more stable, thereby further improving the stability of the shielding sleeve when moving.

[0021] Preferably, it also includes a connecting ring fixedly arranged on the side wall of the shielding sleeve along the length direction of the frame.

[0022] By adopting the above technical solution, the external driving device can be connected to the shielding sleeve through the connecting ring, so as to facilitate pushing the shielding sleeve to move along the length direction of the frame and quickly perform multi-point detection.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Using the frame, guide rail assembly, slide rail assembly and moving wheels, when inspecting the workpiece, place the shielding sleeve in the frame and install the sliding assembly on the guide rail assembly. After completing the inspection of one point, the sliding assembly and the guide rail assembly cooperate to enable the shielding sleeve to move quickly and accurately to the next point. At the same time, after completing the multi-point inspection in the length direction of the frame, the plate is moved along the width direction of the frame by the moving wheels, so as to facilitate the all-round point inspection of the workpiece;

[0025] 2. The roller is limited by the limiting part and the limiting ring groove, so that the roller is not easy to shake when rolling on the linear guide rail, thereby making the movement of the shielding sleeve more stable;

[0026] 3. By using the adapter plate and the lifting plate, when the workpiece to be detected is flat, the bottom of the shielding sleeve abuts against the upper surface of the workpiece. When the workpiece to be detected is cylindrical, the lifting plate is moved downward to increase the height of the shielding sleeve. An adapter plate is installed at the bottom of the shielding sleeve so that the bottom end of the adapter plate abuts against the inner wall of the cylindrical workpiece, thereby enabling the radiation source moving device to be applicable to the detection of flat workpieces and cylindrical workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is a schematic diagram of the overall structure of the radiation source moving device for shielding detection in this application;

[0028] Figure 2 This application Figure 1 is an enlarged schematic view of part A in;

[0029] Figure 3 FIG. is an exploded schematic view of part of the structure of the radiation source moving device for shielding detection in this application;

[0030] Figure 4 FIG. is a side view of the radiation source moving device for shielding detection in this application, highlighting the state of detecting a flat workpiece;

[0031] Figure 5 FIG. is a side view of the radiation source moving device for shielding detection in this application, highlighting the state of detecting a cylindrical workpiece.

[0032] Reference numerals: 1, frame body; 2, guide rail assembly; 21, linear guide rail; 22, support frame; 3, sliding assembly; 31, moving plate; 32, roller; 4, shielding sleeve; 5, moving wheel; 6, limiting part; 7, limiting ring groove; 8, lifting ring; 9, adapter plate; 10, lifting plate; 11, fixing part; 12, support rod; 13, connecting ring; 14, fixing hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further elaborates on this application Figure 1-5 in conjunction with the attached drawings.

[0034] The embodiment of this application discloses a radiation source moving device for shielding detection.

[0035] Referring to Figure 1 , a radiation source moving device for shielding detection includes a frame body 1, a guide rail assembly 2, a sliding assembly 3, a lifting ring 8 and a connecting ring 13. The frame body 1 is composed of a plurality of square steel pipes welded in the horizontal and vertical directions. The frame body 1 is rectangular in shape, and the cross-section of the frame body 1 in the width direction is U-shaped, and the open end of the U-shaped cross-section of the frame body 1 faces downward.

[0036] The guide rail assembly 2 is installed in the frame 1 along the length direction of the frame 1, and the sliding assembly 3 is installed on the outer wall of the shielding sleeve 4. The sliding assembly 3 is slidably installed on the guide rail assembly 2 along the length direction of the frame 1 and drives the shielding sleeve 4 to move in the frame 1 along the length direction of the frame 1. A moving wheel 5 is fixedly installed at the bottom end of each vertical square steel tube of the frame 1, and the moving wheel 5 rolls on the workpiece along the width direction of the frame 1.

[0037] One end of the guide rail assembly 2 extends to the outside of the frame 1 along the length direction of the frame 1, two hanging rings 8 are installed, and both hanging rings 8 are fixedly installed on the top wall of the shielding sleeve 4, and the connecting ring 13 is fixedly installed on the side wall of the shielding sleeve 4 along the length direction of the frame 1.

[0038] When installing the shielding sleeve 4, the hoisting device can lift the shielding sleeve 4 through the two hoisting rings 8, and the hoisting device drives the shielding sleeve 4 to move, and the shielding sleeve 4 drives the sliding assembly 3 to move and place the sliding assembly 3 on the end of the guide rail assembly 2 extending out of the frame 1. Then the driving device is connected to the shielding sleeve 4 through the connecting ring 13, and the driving device drives the shielding sleeve 4 to move, and the shielding sleeve 4 moves freely in the frame 1 along the length direction of the frame 1 through the sliding assembly 3 and the guide rail assembly 2.

[0039] When inspecting the workpiece, first lock the moving wheel 5. After completing the inspection of one point, the driving device drives the shielding sleeve 4 to move in the frame 1. Under the action of the sliding component 3 and the guide rail component 2, the shielding sleeve 4 moves quickly and accurately to the next inspection point for inspection. At the same time, after completing multi-point inspection in the length direction of the frame 1, release the lock of the moving wheel 5, and move the plate 31 along the width direction of the frame 1 through the moving wheel 5, so as to facilitate all-round point inspection of the workpiece.

[0040] Reference Figure 2 Specifically, the guide rail assembly 2 includes a plurality of support frames 22 and two linear guide rails 21. The plurality of support frames 22 are respectively fixedly mounted on the side walls of the frame 1 near the bottom ends of the plurality of vertical square steel pipes of the frame 1, and the linear guide rails 21 are fixedly mounted on the top walls of the plurality of support frames 22 along the length direction of the frame 1. The two linear guide rails 21 are installed at intervals along the width direction of the frame 1, and the two linear guide rails 21 are respectively located on both sides of the shielding sleeve 4. A limiting portion 6 is installed on the top wall of each linear guide rail 21, and the middle portion of the limiting portion 6 protrudes upward.

[0041] Reference Figure 2 and Figure 3The sliding assembly 3 includes two moving plates 31 and four rollers 32. The two moving plates 31 are respectively located on both sides of the shielding sleeve 4 along the width direction of the frame 1. The side walls of the two moving plates 31 close to each other are fixedly installed with lifting plates 10 in the vertical direction. The lifting plates 10 are arranged in an arc shape and fit the outer wall of the shielding sleeve 4. Three fixing members 11 are penetrated on the lifting plates 10. The fixing members 11 pass through the lifting plates 10 and are screwed into the shielding sleeve 4, thereby fixing the moving plates 31 on the shielding sleeve 4. In the present application, the fixing members 11 can be selected as fixing bolts.

[0042] Every two rollers 32 are fixedly mounted on the bottom wall of a movable plate 31 along the length direction of the frame 1. A limiting ring groove 7 is provided on the outer peripheral side wall of each roller 32. The top end of the limiting portion 6 is adapted to be located in the limiting ring groove 7. The roller 32 is slidably mounted on the linear guide rail 21 through the limiting portion 6. The limiting ring groove 7 cooperates with the limiting portion 6 to make the roller 32 move more stably on the linear guide rail 21, thereby making the shielding sleeve 4 more stable when moving.

[0043] Three support rods 12 are fixedly mounted on the side wall of each lifting plate 10 away from the shielding sleeve 4, the top of the support rod 12 is inclined in the direction away from the shielding sleeve 4, and the top of each support rod 12 is fixedly connected to the bottom wall of the moving plate 31. The support rods 12 are used to reinforce the moving plate 31, thereby further improving the stability of the shielding sleeve 4 when moving.

[0044] Twelve fixing holes 14 are provided on the outer wall of the shielding sleeve 4. The twelve fixing holes 14 are symmetrically provided along the width direction of the frame 1, and are located in the six fixing holes 14 on each side of the shielding sleeve 4. Every three fixing holes 14 are provided in a row along the circumferential direction of the shielding sleeve 4, and the six fixing holes 14 are provided in two rows along the axial direction of the shielding sleeve 4. The fixing holes 14 are threaded holes, and the fixing members 11 are threadedly fixed in the fixing holes 14, and each row of three fixing holes 14 corresponds to three fixing members 11 of a lifting plate 10, respectively.

[0045] The shielding sleeve 4 is lifted by the lifting lugs using a lifting device, and then the fixing member 11 is removed and installed in the first or second row of fixing holes 14, so that the height of the lifting plate 10 can be adjusted. When the fixing member 11 is installed in the first row of fixing holes 14, the shielding sleeve 4 is raised relative to the frame 1; when the fixing member 11 is installed in the second row of fixing holes 14, the shielding sleeve 4 is lowered relative to the frame 1.

[0046] Reference Figure 3 and Figure 4 When the workpiece to be inspected is a planar workpiece, the fixing member 11 is installed in the second row of fixing holes 14. At this time, the bottom wall of the shielding sleeve 4 abuts against the top wall of the planar workpiece, making the inspection result more accurate.

[0047] Reference Figure 3 and Figure 5 , an adapter plate 9 is detachably fixedly mounted on the bottom wall of the shielding sleeve 4 by bolts, and the bottom end of the adapter plate 9 is convex downwardly in an arc shape. When the workpiece to be detected is a cylindrical workpiece, the fixing member 11 is installed in the first row of fixing holes 14, and the adapter plate 9 is installed at the bottom of the shielding sleeve 4. At this time, the bottom wall of the adapter plate 9 abuts against the inner wall of the cylindrical workpiece, making the detection result more accurate, thereby making the radiation source moving device applicable to the detection of planar workpieces and cylindrical workpieces.

[0048] The implementation principle of a radiation source moving device for shielding detection in an embodiment of the present application is as follows: when detecting a workpiece, the frame 1 is placed on the workpiece, and the moving wheel 5 is locked first. After completing the detection of one point, the driving device drives the shielding sleeve 4 to move in the frame 1. The shielding sleeve 4 is quickly and accurately moved to the next detection point for detection under the action of the sliding component 3 and the guide rail component 2. At the same time, after completing multi-point detection in the length direction of the frame 1, the moving wheel 5 is unlocked, and the plate 31 is moved along the width direction of the frame 1 by the moving wheel 5, thereby facilitating all-round point detection of the workpiece.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A radiation source moving device for shielding detection, characterized in that: The invention comprises a frame (1), a guide rail assembly (2) and a sliding assembly (3), wherein the guide rail assembly (2) is installed in the frame (1) along the length direction of the frame (1), and the sliding assembly (3) is arranged on a shielding sleeve (4). The sliding assembly (3) is slidably installed on the guide rail assembly (2) along the length direction of the frame (1) and drives the shielding sleeve (4) to slide in the frame (1), and a plurality of moving wheels (5) are arranged at the bottom of the frame (1), and the moving wheels (5) drive the frame (1) to move on the workpiece to be detected along its width direction.

2. A radiation source moving device for shielding detection according to claim 1, characterized in that: The guide rail assembly (2) comprises two linear guide rails (21) and a plurality of support frames (22), wherein the plurality of support frames (22) are fixedly mounted in the frame body (1), wherein the linear guide rails (21) are fixedly mounted on the support frames (22) along the length direction of the frame body (1), and the two linear guide rails (21) are located on both sides of the shielding sleeve (4) along the width direction of the frame body (1); the sliding assembly (3) comprises two movable plates (31) and a plurality of rollers (32), wherein the two movable plates (31) are arranged on both sides of the shielding sleeve (4) along the width direction of the frame body (1), and the plurality of rollers (32) are rotatably arranged at the bottom of the two movable plates (31), and the rollers (32) are slidably arranged on the linear guide rails (21).

3. A radiation source moving device for shielding detection according to claim 2, characterized in that: The middle portion of the top wall of the linear guide rail (21) protrudes upward to form a limiting portion (6), the middle portion of the outer peripheral wall of the roller (32) is concave to form a limiting ring groove (7), and the limiting portion (6) is adapted to be located in the limiting ring groove (7).

4. The radiation source moving device for shielding detection according to claim 2, characterized in that: It also includes a hanging ring (8) fixedly arranged on the top of the shielding sleeve (4), and one end of the linear guide rail (21) extends to the outside of the frame (1).

5. A radiation source moving device for shielding detection according to claim 4, characterized in that: It also comprises an adapter plate (9) which is detachably arranged at the bottom end of the shielding sleeve (4); the bottom end of the adapter plate (9) is convex downward in an arc shape and is used for adapting and detecting a cylindrical workpiece; and the movable plate (31) is adjustably arranged on the shielding sleeve (4) in a vertical direction.

6. A radiation source moving device for shielding detection according to claim 5, characterized in that: A lifting plate (10) is fixedly arranged at the bottom of the movable plate (31) near one end of the shielding sleeve (4); the lifting plate (10) fits the inner wall of the shielding sleeve (4); a fixing piece (11) is passed through the lifting plate (10); a plurality of fixing holes (14) are opened in the vertical direction on the outer wall of the shielding sleeve (4); the fixing piece (11) is inserted into the fixing hole (14) and fixes the lifting plate (10).

7. A radiation source moving device for shielding detection according to claim 6, characterized in that: A plurality of support rods (12) are fixedly arranged on the side wall of the lifting plate (10) away from the shielding sleeve (4); the support rods (12) are arranged obliquely, and the ends of the support rods (12) away from the shielding sleeve (4) are fixedly connected to the bottom wall of the moving plate (31).

8. The radiation source moving device for shielding detection according to claim 1, characterized in that: It also includes a connecting ring (13) fixedly arranged on the side wall of the shielding sleeve (4) along the length direction of the frame (1).

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