Electron accelerator pointing control device for nondestructive detection
By designing the swing and rotation mechanism in the electronic accelerator and adjusting the direction of the electron beam, the problem of insufficient adjustment accuracy and flexibility in the non-damage detection in the prior art is solved, and higher detection accuracy and effect are achieved.
Patent Information
- Application Number
- CN202510200944.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the damage-free detection, the existing electronic accelerators are prone to generate cumulative errors, and lack of adjustment accuracy and flexibility, making it difficult to adapt to detection conditions at different angles.
An electronic accelerator pointing control device is designed, including a swing mechanism and a rotating mechanism, through which the mounting frame is driven to swing and rotate up and down, adjust the direction of the electron beam, reduce cumulative errors, and improve adjustment accuracy and flexibility.
It effectively reduces the cumulative error of the electronic accelerator, improves its adjustment accuracy and flexibility, and enhances the accuracy and effect of damage-free detection.
Smart Images
Figure CN120062497A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of non-destructive testing, and particularly relates to an electron accelerator pointing control device for non-destructive testing. Background Art
[0002] Non-destructive testing is a technology that uses principles and techniques such as rays, ultrasound, infrared, and electromagnetism, combined with instruments, to detect defects, chemical, and physical parameters of materials, parts, and equipment without damaging or affecting the performance of the object being tested. Non-destructive testing has significant characteristics such as non-destructiveness, comprehensiveness, and whole-process nature.
[0003] An electron accelerator for non-destructive testing is a device that uses high-energy electron beams or X-rays generated by an electron accelerator to perform non-destructive testing on objects. When using an electron accelerator for non-destructive testing, it is usually necessary to adjust the direction of the electron beam output by the electron accelerator. By controlling the direction of the electron beam of the electron accelerator, it is possible to ensure that the electron beam accurately points to the target area, improving the accuracy and effectiveness of non-destructive testing.
[0004] Considering that existing electron accelerators usually install the electron accelerator on a moving platform during non-destructive testing, and adjust the direction of the electron beam by driving the electron accelerator to move horizontally or vertically. However, during the moving adjustment process of the electron accelerator, it needs to move in multiple directions, which is prone to cumulative errors. Moreover, the moving effect of the electron accelerator in a straight line direction is difficult to apply to detection conditions at different angles, resulting in a reduction in the adjustment accuracy and flexibility of the electron accelerator. Summary of the Invention
[0005] The purpose of the present invention is to provide an electron accelerator pointing control device for non-destructive testing.
[0006] To achieve this purpose, the present invention adopts the following technical solutions:
[0007] Provide an electron accelerator pointing control device for non-destructive testing, including a base, an electron accelerator, a support frame, a fixing mechanism, a swinging mechanism, a rotating mechanism, and a protection mechanism. The rotating mechanism is rotatably installed on the base and is used to drive the support frame to rotate. The support frame is fixedly installed on the rotating mechanism. The fixing mechanism is fixedly installed on the support frame and is used to fix the electron accelerator. The electron accelerator is provided with an emission port. The swinging mechanism is fixedly installed on the support frame and is used to drive the fixing mechanism to swing vertically. The protection mechanism is fixedly installed on the fixing mechanism and is used to prevent dust from entering the emission port of the electron accelerator.
[0008] Further, the fixing mechanism includes a mounting frame, a rotating column, a sliding rod, a hinged rod, and a clamping column. The rotating column is fixedly installed on the mounting frame and is rotatably connected to the support frame. A chute is formed on the mounting frame, and the sliding rod is slidably installed on the chute. The two ends of the hinged rod are respectively hinged to the sliding rod and the clamping column.
[0009] Further, the fixing mechanism further includes a connecting block and a limiting mechanism. The connecting block is fixedly installed on the clamping column. The connecting block and the mounting frame are connected by an elastic telescopic rod. The sliding rod is slidably installed on the limiting mechanism. The limiting mechanism is used to drive the sliding rod to move. The mounting frame is fixedly connected to the swinging mechanism. The swinging mechanism is used to drive the mounting frame to swing vertically. The protection mechanism is fixedly installed on the clamping column.
[0010] Further, the limiting mechanism includes a moving plate and a handle. The moving plate is slidably installed on the mounting frame, and an inclined groove is formed on the moving plate. The sliding rod is slidably connected to the inclined groove. The handle is fixedly installed on the moving plate.
[0011] Further, the limiting mechanism further includes a wedge block. The wedge block is connected to the moving plate by a spring and is slidably connected to the moving plate. The wedge block is clamped to the bottom of the mounting frame.
[0012] Further, the swinging mechanism includes a cylindrical rod, a collar, and a threaded rod. The cylindrical rod is fixedly installed on the mounting frame. The threaded rod is rotatably installed on the support frame. The collar is threadedly connected to the threaded rod. The collar and the cylindrical rod are connected by a connecting rod, and the two ends of the connecting rod are respectively hinged to the collar and the cylindrical rod.
[0013] Further, the swinging mechanism further includes a connecting plate, a guide rod, a fixing plate, and a motor I. The connecting plate is fixedly installed on the collar. The fixing plate is fixedly installed on the support frame. The two ends of the guide rod are respectively fixedly installed on the support frame and the fixing plate, and the guide rod passes through the connecting plate. The motor I is fixedly installed on the fixing plate, and the output shaft of the motor I is fixedly connected to the threaded rod. The threaded rod and the fixing plate are rotatably connected.
[0014] Further, the protection mechanism includes a mounting plate, a sliding sleeve, and an electromagnetic lens. The mounting plate is fixedly installed on the clamping column, and a guide groove is formed on the mounting plate. The sliding sleeve is slidably installed on the guide groove. The electromagnetic lens is fixedly installed on the sliding sleeve.
[0015] Further, the protection mechanism further includes a moving column, an electric telescopic rod, and a mounting block. A moving groove is formed in the guide groove. The moving column is fixedly installed on the sliding sleeve and is slidably connected to the moving groove. The mounting block is fixedly installed on the mounting plate. The electric telescopic rod is fixedly installed on the mounting plate, and the output end of the electric telescopic rod is fixedly connected to the moving column.
[0016] Further, the rotating mechanism includes a disc, a second motor, a large gear, and a small gear. The large gear and the small gear are both rotatably mounted on the base, and the large gear meshes with the small gear. The disc is fixedly mounted on the large gear and is rotatably connected to the base. The disc is fixedly connected to the support frame. The second motor is fixedly mounted on the base, and the output shaft of the second motor is fixedly connected to the small gear.
[0017] Advantages of the present invention: The electron accelerator pointing control device for non-destructive testing can drive the mounting frame to swing up and down and rotate through the provided swinging mechanism and rotating mechanism, so as to adjust the direction of the electron beam emitted by the electron accelerator on the mounting frame. Furthermore, the movement trajectory of the electron accelerator is simpler, which can effectively reduce the cumulative error, improve the adjustment accuracy and flexibility of the electron accelerator. And through the provided fixing mechanism and limiting mechanism, the electron accelerator can be conveniently and quickly installed and disassembled on the mounting frame, thereby improving the working efficiency of the electron accelerator and achieving the positioning effect. In addition, through the provided protection mechanism, the sliding sleeve can be aligned with the emission port of the electron accelerator. At the same time, through the movement effect of the sliding sleeve, when the electron accelerator is in use, the electron beam can pass through the electromagnetic lens provided on the sliding sleeve, thus playing a focusing role and improving the effect and accuracy of non-destructive testing. When the electron accelerator is not in use, it plays a role in shielding the emission port to prevent dust, thereby improving the use effect and functionality of the pointing control device. Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention will be briefly introduced below.
[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;
[0020] Figure 2 It is a structural schematic diagram of the electron accelerator in the disassembled state of the present invention;
[0021] Figure 3 It is a front view structural schematic diagram of the electron accelerator of the present invention;
[0022] Figure 4 It is a front view structural schematic diagram of the fixing mechanism of the present invention;
[0023] Figure 5 It is a front view structural schematic diagram of the mounting frame of the present invention;
[0024] Figure 6 It is a front view structural schematic diagram of the sliding rod of the present invention;
[0025] Figure 7 It is a disassembled structural schematic diagram of the moving plate of the present invention;
[0026] Figure 8For the present invention Figure 1 Schematic enlarged structure diagram of part A in
[0027] Figure 9 Schematic front view structure diagram of the protection mechanism of the present invention
[0028] Figure 10 Schematic sectional view structure diagram of the base of the present invention
[0029] In the figure: 1. Base; 2. Electron accelerator; 21. Emission port; 3. Support frame; 4. Fixing mechanism; 41. Mounting frame; 42. Rotating column; 43. Chute; 44. Slide bar; 45. Hinge rod; 46. Clamping column; 47. Connecting block; 48. Elastic telescopic rod; 49. Limiting mechanism; 491. Moving plate; 492. Inclined groove; 493. Handle; 494. Spring; 495. Wedge block; 5. Swing mechanism; 51. Cylindrical rod; 52. Connecting rod; 53. Collar; 54. Threaded rod; 55. Connecting plate; 56. Guide rod; 57. Fixed plate; 58. Motor I; 6. Rotating mechanism; 61. Disc; 62. Motor II; 63. Large gear; 64. Small gear; 7. Protection mechanism; 71. Mounting plate; 72. Sliding sleeve; 73. Electromagnetic lens; 74. Guide groove; 75. Moving groove; 76. Moving column; 77. Electric telescopic rod; 78. Mounting block. Detailed implementation manners
[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.
[0031] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product.
[0032] Refer to Figures 1 to 3An electronic accelerator pointing control device for non-destructive detection as shown includes a base 1, an electronic accelerator 2, a support frame 3, a fixing mechanism 4, a swinging mechanism 5, a rotating mechanism 6, and a protection mechanism 7. The rotating mechanism 6 is rotatably installed on the base 1. The rotating mechanism 6 is used to drive the support frame 3 to rotate. Through the rotation effect of the rotating mechanism 6 driving the support frame 3, the fixing mechanism 4 and the electronic accelerator 2 can be driven to rotate, and thus the lateral pointing position of the emission port 21 of the electronic accelerator 2 can be adjusted. The support frame 3 is fixedly installed on the rotating mechanism 6. The support frame 3 plays a role in supporting and fixing the fixing mechanism 4 and the swinging mechanism 5. The fixing mechanism 4 is fixedly installed on the support frame 3. The fixing mechanism 4 is used to fix the electronic accelerator 2. Through the fixing mechanism 4, it is convenient to install and disassemble the electronic accelerator 2 on the mounting frame 41. An emission port 21 is provided on the electronic accelerator 2. The electron beam generated by the electronic accelerator 2 is emitted from the emission port 21 to perform non-destructive detection on the workpiece. The swinging mechanism 5 is fixedly installed on the support frame 3. The swinging mechanism 5 is used to drive the fixing mechanism 4 to swing vertically. Through the swinging mechanism 5 driving the fixing mechanism 4 to swing vertically, the electronic accelerator 2 can be driven to swing vertically, and thus the vertical pointing position of the emission port 21 can be adjusted. The protection mechanism 7 is fixedly installed on the fixing mechanism 4. The protection mechanism 7 is used to prevent dust from entering the emission port 21 of the electronic accelerator 2. Through the protection mechanism 7, the emission port 21 can be protected from dust, or the electron beam emitted from the emission port 21 can be focused.
[0033] Referring to Figures 4 to 6 , the fixing mechanism 4 includes a mounting frame 41, a rotating column 42, sliding rods 44, hinge rods 45, and clamping columns 46. The rotating column 42 is fixedly installed on the mounting frame 41 and is rotatably connected to the support frame 3. Through the rotation effect of the rotating column 42, the mounting frame 41 can rotate. A chute 43 is formed on the mounting frame 41. The sliding rods 44 are slidably installed on the chute 43. There are two symmetrically distributed sliding rods 44. Through the sliding effect of the sliding rods 44, the hinge rods 45 can be driven to move. The two ends of each hinge rod 45 are respectively hinged to the sliding rod 44 and the clamping column 46. There are four hinge rods 45 and four clamping columns 46. The four hinge rods 45 are symmetrically distributed at the two ends of the two sliding rods 44 respectively. Through the moving effect of the hinge rods 45, the clamping columns 46 can be driven to move, so as to clamp and fix or release the fixing of the electronic accelerator 2 on the mounting frame 41.
[0034] Referring to Figures 4 to 6, the fixing mechanism 4 further includes a connecting block 47 and a limiting mechanism 49. The connecting block 47 is fixedly installed on the clamping column 46. Through the movement effect of the connecting block 47, the clamping column 46 can be driven to move. The connecting block 47 is connected to the mounting bracket 41 through an elastic telescopic rod 48. Due to the elastic force of the elastic telescopic rod 48, the connecting block 47 always drives the clamping column 46 to move away from both sides of the mounting bracket 41 when not under external force. At the same time, the elastic telescopic rod 48 can guide the clamping column 46. The slide rod 44 can be slidably installed on the limiting mechanism 49. The limiting mechanism 49 is used to drive the slide rod 44 to move. The mounting bracket 41 is fixedly connected to the swinging mechanism 5. The swinging mechanism 5 is used to drive the mounting bracket 41 to swing vertically. The protection mechanism 7 is fixedly installed on the clamping column 46. Through the movement effect of the clamping column 46, the protection mechanism 7 can be driven to move.
[0035] Refer to Figure 4 and Figure 7 , the limiting mechanism 49 includes a moving plate 491 and a handle 493. The moving plate 491 can be slidably installed on the mounting bracket 41, and an inclined groove 492 is formed on the moving plate 491. Through the sliding effect of the moving plate 491, the slide rod 44 can slide along the inclined groove 492 and the chute 43 at the same time, so as to drive the two slide rods 44 to move away from or close to each other. The slide rod 44 is slidably connected to the inclined groove 492. The handle 493 is fixedly installed on the moving plate 491. By setting the handle 493, it is convenient for the staff to push and pull the moving plate 491, so that the moving plate 491 moves.
[0036] Refer to Figure 7 , the limiting mechanism 49 further includes a wedge block 495. The wedge block 495 is connected to the moving plate 491 through a spring 494, and the wedge block 495 is slidably connected to the moving plate 491. Due to the elastic force of the spring 494, the wedge block 495 always remains clamped to the mounting bracket 41 when not under external force. The wedge block 495 is clamped to the bottom of the mounting bracket 41. Through the clamping effect of the wedge block 495 and the mounting bracket 41, the moving plate 491 can be limited, so that the slide rod 44 remains fixed, and further the clamping column 46 can keep the electron accelerator 2 fixed and clamped.
[0037] Refer to Figure 2 and Figure 8The swing mechanism 5 includes a cylindrical rod 51, a collar 53 and a threaded rod 54. The cylindrical rod 51 is fixedly installed on the mounting frame 41, and the threaded rod 54 is rotatably installed on the support frame 3. Through the rotation effect of the threaded rod 54, the collar 53 can be driven to move vertically. The collar 53 is threadedly connected to the threaded rod 54. Through the movement effect of the collar 53, the connecting rod 52 can be driven to move. The collar 53 is connected to the cylindrical rod 51 through the connecting rod 52, and both ends of the connecting rod 52 are hinged to the collar 53 and the cylindrical rod 51 respectively. Through the movement effect of the connecting rod 52, the cylindrical rod 51 can be driven to tilt, so that the mounting frame 41 swings upward or downward.
[0038] Refer to Figure 2 and Figure 8 ,The swing mechanism 5 further includes a connecting plate 55, a guide rod 56, a fixing plate 57 and a first motor 58. The connecting plate 55 is fixedly installed on the collar 53. Through the movement effect of the collar 53, the connecting plate 55 can be driven to move. The fixing plate 57 is fixedly installed on the support frame 3. Both ends of the guide rod 56 are fixedly installed on the support frame 3 and the fixing plate 57 respectively, and the guide rod 56 penetrates through the connecting plate 55. Through the sliding effect of the guide rod 56 and the connecting plate 55, the collar 53 can be guided, thereby improving the stability of the collar 53 during movement. The first motor 58 is fixedly installed on the fixing plate 57, and the output shaft of the first motor 58 is fixedly connected to the threaded rod 54. By starting the first motor 58, the threaded rod 54 can be driven to rotate, and the threaded rod 54 is rotatably connected to the fixing plate 57.
[0039] Refer to Figure 1 and Figure 9 ,The protection mechanism 7 includes a mounting plate 71, a sliding sleeve 72 and an electromagnetic lens 73. The mounting plate 71 is fixedly installed on the clamping column 46, and a guide groove 74 is formed on the mounting plate 71. Through the movement effect of the clamping column 46, the mounting plate 71 can be driven to move, so that the sliding sleeve 72 can be sleeved on the emission port 21 of the electron accelerator 2 to play a dust-proof role for the emission port 21. The sliding sleeve 72 is slidably installed on the guide groove 74. Through the sliding effect of the sliding sleeve 72, the electromagnetic lens 73 can be moved to the corresponding position of the emission port 21, so that the electron beam emitted from the emission port 21 can pass through the electromagnetic lens 73. The electromagnetic lens 73 is fixedly installed on the sliding sleeve 72. By providing the electromagnetic lens 73, the electron beam passing through the electromagnetic lens 73 will produce a focusing effect, improving the non-invasive detection effect.
[0040] Refer to Figure 9, the protection mechanism 7 further includes a moving column 76, an electric telescopic rod 77 and a mounting block 78. A moving groove 75 is formed in the guide groove 74. The moving column 76 is fixedly installed on the sliding sleeve 72 and is slidably connected to the moving groove 75. Through the movement effect of the moving column 76, the sliding sleeve 72 can be driven to move. The mounting block 78 is fixedly installed on the mounting plate 71, and the mounting block 78 plays a role in supporting and fixing the electric telescopic rod 77. The electric telescopic rod 77 is fixedly installed on the mounting plate 71, and the output end of the electric telescopic rod 77 is fixedly connected to the moving column 76. By starting the electric telescopic rod 77, the moving column 76 can be driven to move.
[0041] Referring to Figure 1 and Figure 10 , the rotating mechanism 6 includes a disc 61, a second motor 62, a large gear 63 and a small gear 64. The large gear 63 and the small gear 64 are both rotatably installed on the base 1 and are meshed with each other. Through the rotation effect of the small gear 64, the large gear 63 can be driven to rotate. The disc 61 is fixedly installed on the large gear 63 and is rotatably connected to the base 1. Through the rotation effect of the large gear 63, the disc 61 can be driven to rotate. The disc 61 is fixedly connected to the support frame 3. Through the rotation effect of the disc 61, the support frame 3 can be driven to rotate. The second motor 62 is fixedly installed on the base 1, and the output shaft of the second motor 62 is fixedly connected to the small gear 64. By starting the second motor 62, the small gear 64 can be driven to rotate.
[0042] For the electron accelerator pointing control device for non-destructive testing, through the provided swinging mechanism and rotating mechanism, the mounting frame can be driven to swing up and down and rotate, so as to adjust the direction of the electron beam emitted by the electron accelerator on the mounting frame, and further make the movement track of the electron accelerator simpler, effectively reduce the cumulative error, improve the adjustment accuracy and flexibility of the electron accelerator, and through the provided fixing mechanism and limiting mechanism, the electron accelerator can be conveniently and quickly installed and disassembled on the mounting frame, so as to improve the working efficiency of the electron accelerator and achieve the positioning effect. In addition, through the provided protection mechanism, the sliding sleeve can be aligned with the emission port of the electron accelerator, and at the same time, through the movement effect of the sliding sleeve, when the electron accelerator is in use, the electron beam can pass through the electromagnetic lens provided on the sliding sleeve, so as to play a focusing role and improve the effect and accuracy of non-destructive testing. When the electron accelerator is not in use, it plays a role in shielding the emission port to prevent dust, so as to improve the use effect and functionality of the pointing control device.
[0043] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.
Claims
1. An electron accelerator pointing control device for non-destructive testing, characterized in that: The invention comprises a base (1), an electron accelerator (2), a support frame (3), a fixing mechanism (4), a swinging mechanism (5), a rotating mechanism (6) and a protective mechanism (7); the rotating mechanism (6) is rotatably mounted on the base (1); the rotating mechanism (6) is used to drive the support frame (3) to rotate; the support frame (3) is fixedly mounted on the rotating mechanism (6); the fixing mechanism (4) is fixedly mounted on the support frame (3); the fixing mechanism (4) is used to fix the electron accelerator (2); an emission port (21) is provided on the electron accelerator (2); the swinging mechanism (5) is fixedly mounted on the support frame (3); the swinging mechanism (5) is used to drive the fixing mechanism (4) to swing vertically; the protective mechanism (7) is fixedly mounted on the fixing mechanism (4); and the protective mechanism (7) is used to prevent dust from the emission port (21) of the electron accelerator (2).
2. The electron accelerator pointing control device for non-destructive testing according to claim 1, characterized in that: The fixing mechanism (4) comprises a mounting frame (41), a rotating column (42), a sliding rod (44), a hinged rod (45) and a clamping column (46); the rotating column (42) is fixedly mounted on the mounting frame (41), and the rotating column (42) is rotatably connected to the support frame (3); a sliding groove (43) is provided on the mounting frame (41), and the sliding rod (44) can be slidably mounted on the sliding groove (43); and the two ends of the hinged rod (45) are respectively hinged to the sliding rod (44) and the clamping column (46).
3. The electron accelerator pointing control device for non-destructive testing according to claim 2, characterized in that: The fixing mechanism (4) also includes a connecting block (47) and a limiting mechanism (49), wherein the connecting block (47) is fixedly mounted on the clamping column (46), the connecting block (47) is connected to the mounting frame (41) via an elastic telescopic rod (48), the sliding rod (44) can be slidably mounted on the limiting mechanism (49), the limiting mechanism (49) is used to drive the sliding rod (44) to move, the mounting frame (41) is fixedly connected to the swing mechanism (5), the swing mechanism (5) is used to drive the mounting frame (41) to swing vertically, and the protective mechanism (7) is fixedly mounted on the clamping column (46).
4. The electron accelerator pointing control device for non-destructive testing according to claim 3, characterized in that: The limiting mechanism (49) comprises a movable plate (491) and a handle (493); the movable plate (491) can be slidably mounted on the mounting frame (41); an inclined groove (492) is provided on the movable plate (491); the sliding rod (44) is slidably connected to the inclined groove (492); and the handle (493) is fixedly mounted on the movable plate (491).
5. The electron accelerator pointing control device for non-destructive testing according to claim 4, characterized in that: The limiting mechanism (49) further comprises a wedge block (495), wherein the wedge block (495) is connected to the movable plate (491) via a spring (494), and the wedge block (495) is slidably connected to the movable plate (491), and the wedge block (495) is clamped to the bottom of the mounting frame (41).
6. The electron accelerator pointing control device for non-destructive testing according to claim 3, characterized in that: The swing mechanism (5) comprises a cylindrical rod (51), a collar (53) and a threaded rod (54); the cylindrical rod (51) is fixedly mounted on a mounting frame (41); the threaded rod (54) is rotatably mounted on a support frame (3); the collar (53) is threadedly connected to the threaded rod (54); the collar (53) and the cylindrical rod (51) are connected via a connecting rod (52); and the two ends of the connecting rod (52) are respectively hinged to the collar (53) and the cylindrical rod (51).
7. The electron accelerator pointing control device for non-destructive testing according to claim 6, characterized in that: The swing mechanism (5) further comprises a connecting plate (55), a guide rod (56), a fixing plate (57) and a motor (58); the connecting plate (55) is fixedly mounted on the collar (53); the fixing plate (57) is fixedly mounted on the support frame (3); the two ends of the guide rod (56) are respectively fixedly mounted on the support frame (3) and the fixing plate (57); the guide rod (56) passes through the connecting plate (55); the motor (58) is fixedly mounted on the fixing plate (57); the output shaft of the motor (58) is fixedly connected to the threaded rod (54); and the threaded rod (54) and the fixing plate (57) are rotatably connected.
8. The electron accelerator pointing control device for non-destructive testing according to claim 3, characterized in that: The protection mechanism (7) comprises a mounting plate (71), a sliding sleeve (72) and an electromagnetic lens (73); the mounting plate (71) is fixedly mounted on a clamping column (46); a guide groove (74) is provided on the mounting plate (71); the sliding sleeve (72) can be slidably mounted on the guide groove (74); and the electromagnetic lens (73) is fixedly mounted on the sliding sleeve (72).
9. The electron accelerator pointing control device for non-destructive testing according to claim 8, characterized in that: The protection mechanism (7) further comprises a moving column (76), an electric telescopic rod (77) and a mounting block (78); a moving groove (75) is provided in the guide groove (74); the moving column (76) is fixedly mounted on the sliding sleeve (72), and the moving column (76) is slidably connected to the moving groove (75); the mounting block (78) is fixedly mounted on the mounting plate (71); the electric telescopic rod (77) is fixedly mounted on the mounting plate (71), and the output end of the electric telescopic rod (77) is fixedly connected to the moving column (76).
10. The electron accelerator pointing control device for non-destructive testing according to claim 1, characterized in that: The rotating mechanism (6) comprises a disc (61), a second motor (62), a large gear (63) and a small gear (64); the large gear (63) and the small gear (64) are both rotatably mounted on the base (1), and the large gear (63) meshes with the small gear (64); the disc (61) is fixedly mounted on the large gear (63), and the disc (61) is rotatably connected to the base (1); the disc (61) is fixedly connected to the support frame (3); the second motor (62) is fixedly mounted on the base (1), and the output shaft of the second motor (62) is fixedly connected to the small gear (64).