Lifting and displacement integrated device and method for radiographic inspection

Abstract

A lifting and displacement integrated device for radiographic inspection comprises a base, moving wheels are installed at the bottom of the base, a support is installed at the top of the base through a lifting mechanism, a tray transversely arranged in the horizontal direction is installed on the support, and fixing blocks facilitating placement and fixation of a radiographic inspection radiographic machine are installed on the two sides of the tray. The tray is mounted on the bracket in a sliding manner, and power equipment for driving the tray to drive the flaw detection ray machine to perform horizontal displacement adjustment is mounted on the bracket; the lifting mechanism comprises an internal thread cylinder vertically and fixedly installed on the top of the base and an external bolt column with the lower portion screwed in the internal thread cylinder, the support is fixedly installed on the top of the external thread column, and a driving device used for driving the external bolt column to move up and down is further installed on the internal thread cylinder. The device is used for carrying out nondestructive testing and radiographic inspection operation on the barrel, and the effect is more remarkable, so that the working efficiency is improved, the labor intensity is reduced, and the investment of manpower and material resources is reduced.

Description

Technical Field

[0001] This invention relates to the field of radiographic testing technology, and in particular to an integrated lifting and displacement device for radiographic testing, and a method for performing radiographic testing using the aforementioned integrated lifting and displacement device. Background Technology

[0002] In the metal product manufacturing process, welds need to be radiographically inspected to verify the presence of welding defects. Radiographic inspection requires adjusting the height of the X-ray machine, the X-ray window, the focal length, and the projection to ensure the image meets standard requirements. However, currently, the industry generally uses simple supports to fix and adjust the height of the X-ray machine. This is not only labor-intensive and prone to shaking, causing image ghosting, but also poses a significant safety hazard due to the effort involved in adjustment and the risk of injury from falling objects. Furthermore, it is very uneconomical for businesses. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing an integrated lifting and displacement device for radiographic testing, which is used in radiographic testing of cylinders for non-destructive testing, and has a more significant effect, thereby improving work efficiency, reducing labor intensity, and reducing the input of manpower and material resources.

[0004] Another technical problem to be solved by the present invention is to provide a method for performing radiographic testing using the above-mentioned integrated lifting and displacement device for radiographic testing.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solution. The present invention is an integrated lifting and displacement device for radiographic testing. The device includes a base, with casters installed at the bottom of the base, and a support installed on the top of the base via a lifting mechanism. A tray arranged horizontally in the horizontal direction is installed on the support, and fixing blocks are installed on both sides of the tray to facilitate the placement and fixation of the radiographic testing machine. The tray is slidably mounted on the support, and a power device for driving the tray to move the radiographic testing machine horizontally is installed on the support. The lifting mechanism includes an internally threaded cylinder vertically fixedly installed on the top of the base and an external bolt column screwed into the internally threaded cylinder. The support is fixedly installed on the top of the external bolt column, and a drive device for driving the external bolt column to move up and down is also installed on the internally threaded cylinder.

[0006] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: For the above-mentioned integrated lifting and displacement device for radiographic testing, the power equipment is a ball screw, the ball screw rod is mounted on the bracket through bearings and bearing seats, the tray is mounted on the ball screw nut, and a servo motor is also mounted on the bracket, the motor shaft of the servo motor is connected to the ball screw rod drive.

[0007] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: For the above-mentioned integrated lifting and displacement device for radiographic testing, a slider is installed at the bottom of the tray, and a slide rail is installed on the bracket, with the slider slidably mounted on the slide rail.

[0008] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: For the above-mentioned integrated lifting and displacement device for radiographic testing, at least two sets of fixing blocks are provided, and two fixing blocks are provided in each set and are symmetrically arranged on both sides of the top of the tray. A fixing gap is left between the two fixing blocks in the same set to facilitate the placement and fixing of the radiographic testing machine.

[0009] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: For the above-mentioned integrated lifting and displacement device for radiographic testing, the driving device is a worm gear structure, the worm wheel structure is screwed onto the outer bolt column, and a geared motor is also installed on the internal threaded cylinder. The motor shaft of the geared motor is connected to the worm gear structure via a worm drive.

[0010] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: For the above-mentioned integrated lifting and displacement device for radiographic testing, a control box is also installed on the base, and a PLC controller is installed in the control box. The power equipment and drive equipment are both connected to the output terminal of the PLC controller. A touch screen connected to the PLC controller is also installed on the control box.

[0011] The technical problem to be solved by the present invention can also be further achieved by the following technical solution: For the above-mentioned integrated lifting and displacement device for radiographic testing, the moving wheel is four self-locking universal wheels, which are respectively installed around the bottom of the base.

[0012] The technical problem to be solved by the present invention can also be further achieved through the following technical solution: For the above-mentioned integrated lifting and displacement device for radiographic testing, a radiographic testing method is provided, the steps of which are as follows: (1) Place the flaw detection X-ray machine on the tray and fix it with the fixing block to ensure that the flaw detection X-ray machine is installed firmly; (2) Move the device together with the flaw detection X-ray machine to the flaw detection work area by means of the moving wheels, and adjust the position so that the X-ray outlet of the flaw detection X-ray machine faces the workpiece to be inspected; (3) First, install a laser pointer at the X-ray exit of the flaw detection X-ray machine, and then adjust the horizontal position and height of the tray through the power equipment and drive equipment so that the laser pointer irradiates the flaw area of ​​the workpiece to be inspected. (4) Remove the laser pointer and check again whether the parameters of the flaw detection X-ray machine meet the flaw detection requirements. After confirming that there are no errors, start the flaw detection X-ray machine to begin the X-ray flaw detection operation. (5) During the radiographic testing process, closely observe the working status and imaging of the radiographic testing machine, and make fine adjustments to the position and height of the tray as needed through the power equipment and drive equipment; (6) After the flaw detection operation is completed, turn off the flaw detection X-ray machine, move the device to the designated storage location by the moving wheels, and clean and maintain the device for the next use.

[0013] The technical problem to be solved by the present invention can also be further achieved through the following technical solution: In the above-mentioned radiographic testing method, the position and height of the tray are adjusted by the power equipment and drive equipment controlled by the PLC controller. Specifically, a closed-loop control strategy based on PID algorithm is adopted. The error is calculated by combining the tray position data collected in real time by the laser displacement sensor with the target position. The adjustment amount is output to the servo motor and the reduction motor through the PID algorithm to realize the control of the horizontal displacement and height of the tray, and ensure that the X-ray outlet of the X-ray machine is always aligned with the area to be tested.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This device integrates lifting and displacement functions. When performing non-destructive testing radiographic inspection on cylinders, it greatly shortens the adjustment time compared to the traditional method of manually adjusting the position of the X-ray machine, enabling the inspection work to be carried out quickly and thus significantly improving the overall inspection efficiency. It can complete the inspection work on multiple parts of the cylinder more quickly. 2. This device achieves automated adjustment of the position and height of the X-ray machine through mechanical structure and power drive equipment. Operators only need to send instructions to the PLC controller through the touch screen on the control box to easily complete various adjustment operations without having to perform heavy physical labor, effectively reducing labor intensity and alleviating the workload of operators. 3. During the flaw detection process, in order to ensure that the X-rays accurately irradiate the area to be inspected, this invention adopts a laser pen-assisted positioning method, which can ensure that the X-ray outlet of the flaw detection X-ray machine is always aligned with the target position. At the same time, during the flaw detection process, the position and height of the tray can be finely adjusted according to the imaging situation, further ensuring the accuracy of the inspection, enabling more accurate detection of defects inside the cylinder, and improving the quality of non-destructive testing. 4. The present invention has high stability and reliability, reducing equipment damage and testing errors caused by improper manual operation, lowering equipment maintenance costs and material consumption for repeated testing, thereby reducing material investment and saving production costs for enterprises. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one structure of the present invention; Figure 2 This is a schematic diagram of the tray installation structure of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Reference Figure 1-2 A lifting and displacement integrated device for radiographic testing is disclosed, which is used to achieve efficient and accurate inspection of welds and other parts in radiographic testing of metal products. The device includes a base 1, on the bottom of which are movable wheels 2. The base 1 serves as the basic support component of the entire device. Preferably, the movable wheels 2 are four self-locking universal wheels, which are respectively installed around the bottom of the base 1. This facilitates pushing the device to different testing areas and ensures that the device can be stably fixed after reaching the designated position, thus avoiding the impact of device shaking on the accuracy of the test results during the testing process.

[0018] A support 3 is installed on the top of the base 1 via a lifting mechanism. A tray 4 is installed on the support 3, arranged horizontally in the horizontal direction. Fixing blocks 13 are installed on both sides of the tray 4 to facilitate the placement and fixation of the flaw detection X-ray machine 5. The tray 4 is slidably mounted on the support 3. A power device 10 is installed on the support 3 to drive the tray 4 and adjust the horizontal displacement of the flaw detection X-ray machine 5. The lifting mechanism is used to adjust the height of the flaw detection X-ray machine 5, and the power device 10 is used to drive the tray 4 to adjust the horizontal position of the flaw detection X-ray machine 5. The tray 4 is used to place the flaw detection X-ray machine 5, and the fixing blocks 13 are used to fix the flaw detection X-ray machine 5, so that the flaw detection X-ray machine 5 can be placed stably on the tray 4, avoiding shaking or displacement during the movement or adjustment of the device, and ensuring the smooth progress of the flaw detection operation. Preferably, at least two sets of fixing blocks 13 are provided, with two fixing blocks 13 in each set, symmetrically arranged on both sides of the top of the tray 4. A fixing gap is left between the two fixing blocks 13 in the same set to facilitate the placement and fixation of the flaw detection X-ray machine 5.

[0019] Preferably, the power device 10 is a ball screw, the ball screw rod is mounted on the bracket 3 through bearings and bearing seats, and the tray 4 is mounted on the ball screw nut. A servo motor 11 is also mounted on the bracket 3. The motor shaft of the servo motor 11 is connected to the ball screw rod through a transmission connection. When the servo motor 11 is started, it drives the ball screw to rotate through the motor shaft. The ball screw nut moves linearly under the action of the rotation of the ball screw, thereby driving the tray 4 to perform horizontal displacement adjustment on the bracket 3. More preferably, a slider 12 is installed at the bottom of the tray 4, and a slide rail 18 is installed on the bracket 3. The slider 12 is slidably mounted on the slide rail 18, providing smooth and stable guidance for the horizontal movement of the tray 4 and reducing friction and shaking during the movement.

[0020] Preferably, the lifting mechanism includes an internally threaded cylinder 6 vertically fixedly installed on the top of the base 1 and an external bolt column 7 screwed into the internally threaded cylinder 6 at its lower part. The bracket 3 is fixedly installed on the top of the externally threaded column. The lifting function of the bracket 3 is realized through the cooperation of the internally threaded cylinder 6 and the external bolt column 7. A driving device for driving the external bolt column 7 to move up and down is also installed on the internally threaded cylinder 6. A guide cylinder 14 is also installed on the base 1, and a guide rod 15 is installed on the bracket 3. The lower part of the guide rod 15 is inserted into the guide cylinder 14 to guide the bracket 3.

[0021] More preferably, the driving device is a worm gear structure 8, with the worm wheel of the worm gear structure 8 screwed onto the outer bolt post 7. A geared motor 9 is also installed on the internal threaded cylinder 6. The motor shaft of the geared motor 9 is connected to the worm gear structure 8 via a worm drive. When the geared motor 9 starts, it drives the worm wheel to rotate through the worm, thereby causing the outer bolt post 7 to move up and down within the internal threaded cylinder 6, thus achieving the adjustment of the height of the bracket 3. The worm gear structure 8 has self-locking properties, which can keep the position of the outer bolt post 7 unchanged after the drive stops, ensuring the stability of the bracket 3 after height adjustment.

[0022] In actual use, in order to achieve automated control of the position and height adjustment of the tray 4, a control box 16 is also installed on the base 1. A PLC controller is installed in the control box 16. The power equipment 10 and the drive equipment are both connected to the output terminal of the PLC controller. A touch screen 17 connected to the PLC controller is also installed on the control box 16. The operator can input instructions to the PLC controller through the touch screen 17 to realize remote control of the device and parameter setting, which improves the convenience and flexibility of operation. The PLC program involved can be written by those skilled in the art using existing PLC programs.

[0023] A radiographic testing method, the steps of which are as follows: (1) Place the flaw detection X-ray machine 5 on the tray 4 and fix it with the fixing block 13. After fixing, check the installation of the flaw detection X-ray machine 5 to ensure that it is installed firmly and reliably, so as to provide a stable foundation for subsequent flaw detection operations. (2) Move the device together with the flaw detection X-ray machine 5 to the flaw detection work area by using the moving wheel 2, and adjust the position so that the X-ray outlet of the flaw detection X-ray machine 5 faces the workpiece to be inspected, so as to ensure that the X-ray outlet can accurately point to the part to be inspected, and prepare for subsequent precise flaw detection. (3) First, install a laser pointer at the X-ray exit of the flaw detection X-ray machine 5. The laser pointer can emit a visible laser beam to provide the operator with an intuitive reference line. Then, adjust the horizontal position and height of the tray 4 through the power equipment 10 and the drive equipment. In this process, a closed-loop control strategy based on PID algorithm is adopted, and the error is calculated by combining the real-time position data of the tray 4 collected by the laser displacement sensor with the target position: The laser displacement sensor can accurately measure the current position information of the tray 4 and transmit it to the PLC controller. The PLC controller calculates the error value between the current position and the target position according to the preset target position. Then, it uses the PID algorithm to process the error value and outputs the corresponding adjustment amount to the servo motor 11 and the geared motor 9. The servo motor 11 controls the rotation of the ball screw according to the received adjustment amount, thereby driving the tray 4 to move precisely in the horizontal direction; the geared motor 9 drives the worm gear structure 8 according to the adjustment amount, so that the outer bolt column 7 moves up and down in the inner threaded cylinder 6, thereby adjusting the height of the tray 4. Through continuous adjustment and feedback, the laser pointer is illuminated on the area to be inspected of the workpiece. (4) Remove the laser pointer and check again whether the parameter settings of the flaw detection X-ray machine 5 meet the flaw detection requirements. These parameters include X-ray energy, exposure time, focal length, etc. Different parameters need to be set for different workpieces and flaw detection requirements. After confirming that everything is correct, start the X-ray machine 5 to begin the X-ray inspection operation. During the start-up process, pay attention to the working status of the X-ray machine 5 to ensure that it operates normally. (5) During the radiographic testing process, closely observe the working status and imaging of the radiographic testing machine 5. Due to factors such as the shape and material of the workpiece, the propagation of the X-rays and the imaging effect may be affected. Therefore, during the testing process, there may be unclear imaging or interference. The operator should adjust the position and height of the tray 4 according to the actual situation and the power equipment 10 and drive equipment as needed. Similarly, the closed-loop control strategy based on the PID algorithm is adopted. Combined with the real-time imaging situation and the preset detection requirements, the position and height of the tray 4 are precisely adjusted to ensure that the X-ray outlet of the radiographic testing machine 5 is always aligned with the area to be tested and to obtain a clear and accurate X-ray image. (6) After the flaw detection operation is completed, turn off the flaw detection X-ray machine 5, move the device to the designated storage location by the moving wheels 2, and clean and maintain the device for the next use.

[0024] This invention, through reasonable structural design and advanced control strategy, achieves precise adjustment of the position and height of the X-ray machine 5, improves the accuracy and efficiency of X-ray inspection, reduces the labor intensity of operators, and provides an efficient and reliable solution for X-ray inspection of metal products.

Claims

1. A lifting and displacement integrated device for radiographic testing, characterized in that: The device includes a base with casters at the bottom and a support frame mounted on the top of the base via a lifting mechanism. A horizontally positioned tray is mounted on the support frame, and fixing blocks are installed on both sides of the tray to facilitate the placement and fixation of the X-ray machine. The tray is slidably mounted on the support frame, and a power device is mounted on the support frame to drive the tray and adjust the horizontal displacement of the X-ray machine. The lifting mechanism includes an internally threaded cylinder vertically fixed to the top of the base and an external bolt column screwed into the internally threaded cylinder. The support frame is fixedly mounted on the top of the external bolt column, and a drive device is also mounted on the internally threaded cylinder to drive the external bolt column to move up and down.

2. The integrated lifting and displacement device for radiographic testing according to claim 1, characterized in that: The power equipment is a ball screw. The ball screw rod is mounted on a bracket via bearings and bearing seats. The tray is mounted on the ball screw nut. A servo motor is also mounted on the bracket. The motor shaft of the servo motor is connected to the ball screw rod via a transmission connection.

3. The integrated lifting and displacement device for radiographic testing according to claim 1 or 2, characterized in that: A slider is installed at the bottom of the tray, and a slide rail is installed on the bracket. The slider is slidably mounted on the slide rail.

4. The integrated lifting and displacement device for radiographic testing according to claim 1, characterized in that: At least two sets of fixing blocks are provided, with two fixing blocks in each set, symmetrically arranged on both sides of the top of the tray. A fixing gap is left between the two fixing blocks in the same set to facilitate the placement and fixing of the flaw detection X-ray machine.

5. The integrated lifting and displacement device for radiographic testing according to claim 1, characterized in that: The drive device is a worm gear structure, with the worm wheel screwed onto the outer bolt post. A geared motor is also installed on the internal threaded cylinder, and the motor shaft of the geared motor is connected to the worm gear drive of the worm gear structure.

6. The integrated lifting and displacement device for radiographic testing according to claim 1, characterized in that: A control box is also installed on the base, and a PLC controller is installed inside the control box. The power equipment and drive equipment are all connected to the output terminal of the PLC controller. A touch screen connected to the PLC controller is also installed on the control box.

7. The integrated lifting and displacement device for radiographic testing according to claim 1, characterized in that: The movable wheels are four self-locking omnidirectional wheels, which are respectively installed around the bottom of the base.

8. A radiographic flaw detection method, characterized in that: This method uses the integrated lifting and displacement device for radiographic testing as described in any one of claims 1-7, and its steps are as follows: (1) Place the flaw detection X-ray machine on the tray and fix it with the fixing block to ensure that the flaw detection X-ray machine is installed firmly; (2) Move the device together with the flaw detection X-ray machine to the flaw detection work area by means of the moving wheels, and adjust the position so that the X-ray outlet of the flaw detection X-ray machine faces the workpiece to be inspected; (3) First, install a laser pointer at the X-ray exit of the flaw detection X-ray machine, and then adjust the horizontal position and height of the tray through the power equipment and drive equipment so that the laser pointer irradiates the flaw area of ​​the workpiece to be inspected. (4) Remove the laser pointer and check again whether the parameters of the flaw detection X-ray machine meet the flaw detection requirements. After confirming that there are no errors, start the flaw detection X-ray machine to begin the X-ray flaw detection operation. (5) During the radiographic testing process, closely observe the working status and imaging of the radiographic testing machine, and make fine adjustments to the position and height of the tray as needed through the power equipment and drive equipment; (6) After the flaw detection operation is completed, turn off the flaw detection X-ray machine, move the device to the designated storage location by the moving wheels, and clean and maintain the device for the next use.

9. The radiographic testing method according to claim 1, characterized in that: In this method, the position and height of the tray are adjusted by controlling the power equipment and drive equipment through the PLC controller. Specifically, a closed-loop control strategy based on PID algorithm is adopted. The error is calculated by combining the tray position data collected in real time by the laser displacement sensor with the target position. The adjustment amount is output to the servo motor and the reduction motor through the PID algorithm to realize the control of the horizontal displacement and height of the tray, ensuring that the X-ray outlet of the flaw detection X-ray machine is always aligned with the area to be detected.

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