CN115616007A - Automatic adjusting device and method for X-ray detection of weld defects - Google Patents
Automatic adjusting device and method for X-ray detection of weld defects Download PDFInfo
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Abstract
The invention relates to an automatic adjusting device and method for X-ray detection of weld defects, belonging to the field of X-ray detection. The laser angle measuring module and the X-ray flaw detector window are located on the same plane, the middle position of a welding seam is determined through the laser camera, and the axis of the X-ray flaw detector window passes through the middle position of the welding seam through the guide rail sliding module. 360 all-round rotation module arranges the base in on, realizes 360 all-round rotation module's arbitrary angular rotation through unable adjustment base, and height adjusting module is connected with 360 all-round rotation module through adjusting plate down, adjusts the height that the thing platform was put to the weldment under the electric putter effect, shines angle adjustment module and is connected with height adjusting module through last regulating plate, realizes the welding seam direction and adjusts. Has the advantages that: effectively reducing the placing requirement of the workpiece to be detected. The focal length and the irradiation angle can be adjusted by combining the intelligent sensing and the mechanical structure, and the adjustment speed and the accuracy are high.
Description
Technical Field
The invention relates to the field of X-ray detection, in particular to an automatic adjusting device and method for X-ray detection of weld defects.
Background
Welding is used as a main processing technology of metal, is widely applied to industries such as automobile production, ship manufacturing, aerospace and the like, and when a welding seam has defects, serious consequences are caused to the product quality. The X-ray weld defect detection can directly obtain a weld defect image and directly obtain the length and width dimensions of the defect, so that the defect is more visual.
In welding seam X ray testing process, different X ray flaw detectors need be used to the work piece of different thickness, use different focuses to the welding seam to equidirectional, need guarantee that welding seam and X ray irradiation angle are the vertical state or present certain angle, artifical adjustment speed is slow, and can't accurately find required distance and angle, how to realize that mechanical device focus adjustment and irradiation angle are the technological problem that awaits the solution at present.
Disclosure of Invention
The invention aims to provide an automatic adjusting device and method for detecting welding seam defects by X-ray, which solve the problems in the prior art. The laser angle measuring module and the X-ray flaw detector window are positioned on the same plane, the middle position of a welding seam is determined through the line laser camera, the axis of the X-ray flaw detector window passes through the middle position of the welding seam through the guide rail sliding module, whether the distances from the X-ray flaw detector window to a welding seam base metal are equal or not is measured in real time through the laser distance measuring sensor, and whether the angle of the X-ray flaw detector window relative to the plane where the welding seam is positioned is in a vertical state or not is judged. The angle rotation of the workpiece can be realized through the 360-degree all-directional rotation module, the height of the welded workpiece is adjusted through the electric push rod, the X-ray irradiation angle is adjusted through the irradiation angle adjusting module until the optimal angle is determined, and the detection and adjustment of X-rays emitted from a window of the X-ray flaw detector and the surface of a weld joint in a vertical mode are met.
The above object of the present invention is achieved by the following technical solutions:
the automatic regulating device for detecting the weld defects by X-rays comprises a laser angle measuring module, a guide rail sliding module, a control module, a 360-degree all-directional rotating module, a weld angle regulating module, a height regulating module and an irradiation angle regulating module, wherein the laser angle measuring module and a window of an X-ray flaw detector 1 are positioned on the same plane, and the distance from the window of the X-ray flaw detector to a weld parent metal is measured in real time; the guide rail sliding module is arranged on the base 10 to realize the relative position adjustment of the welding line and the window of the X-ray flaw detector 1; the control module is arranged in the base 10 and drives the first motor 6, the second motor 15, the first stepping motor 19.1 and the second stepping motor 19.2 to move; the 360-degree omnibearing rotation module drives the rotating disc 9 to rotate 360 degrees by a motor II 15 which is arranged in the base 10; the height adjusting module is connected with an upper adjusting plate 7 and a lower adjusting plate 14 through an adjusting rod 8, and height adjustment is realized under the combined action of an electric push rod 13 and connecting rods I, II, III 12.1, 12.2 and 12.3; the irradiation angle adjusting module is supported by a lower adjusting plate 14, and the first motor 6 drives the welding workpiece placing table 5 to rotate, so that the irradiation angle is adjusted.
The first laser ranging sensor 17.1 and the second laser ranging sensor 17.2 are symmetrically arranged on two sides of the first line laser camera 16 to jointly form a laser angle measuring module which is fixed on a cross beam part of the support platform 2, two lower support ends of the support platform 2 are fixed on a first guide rail 18.1 and a second guide rail 18.2 through connecting plates, the laser angle measuring module and a window of the X-ray flaw detector 1 are positioned on the same plane, and the line laser camera 16 and the axis of the X-ray flaw detector 1 are enabled to be superposed; the middle position of the welding seam is determined by the length of a broken line segment and a broken line point of a linear laser image obtained by a linear laser camera 16, and the distances from the position to base material flat plates on two sides of the welding seam are measured by a first laser ranging sensor 17.1 and a second laser ranging sensor 17.2 respectively.
The first guide rail 18.1, the second guide rail 18.2, the first stepping motor 19.1 and the second stepping motor 19.2 jointly form a guide rail sliding module, the first guide rail 18.1 and the second guide rail 18.2 are fixed on the base 10, and the relative positions of the X-ray flaw detector 1 on the support table 2 and a welding seam on the welding workpiece placing table 5 are adjusted through the guide rail sliding module, so that the axis of a window of the X-ray flaw detector 1 passes through the middle position of the welding seam.
The welding seam angle adjusting module is as follows: the fixed clamp 4 fixes the welding workpiece on the welding workpiece placing table 5, the motor I6 is locked on the support frame 3 in a sliding mode and is connected with the welding workpiece placing table 5 through the rotary rod 11, and the inclination angle of the welding workpiece placing table 5 is controlled; the relative angle between the welding seam on the welding workpiece placing table 5 and the X-ray flaw detector 1 is adjusted through the welding seam angle adjusting module, and when the distances from the positions measured by the first laser distance measuring sensor, the second laser distance measuring sensor 17.1 and the second laser distance measuring sensor 17.2 to base material flat plates on the two sides of the welding seam are equal, the angle is adjusted in place.
The 360-degree omnibearing rotation module is as follows: the rotating disc 9 is arranged on the base 10 and is driven by the first motor 15 to rotate; the direction of the welding seam on the welding workpiece placing table 5 is adjusted through the 360-degree all-directional rotating module, so that the direction of the welding seam is parallel to the axis of the X-ray flaw detector 1.
The height adjusting module comprises a support frame 3, an upper adjusting plate 7, a plurality of adjusting rods 8, a first connecting rod 12.1, a second connecting rod 12.2, a third connecting rod 12.3, an electric push rod 13 and a lower adjusting plate 14, wherein the support frame 3 is fixed on a rotating disc 9, when an inner rod of the electric push rod 13 is in a telescopic state, a first motor 6 can slide up and down on the support frame 3, and when the electric push rod 13 is in a static state, the first motor 6 is fixed by an internal clamping mechanism of the support frame 3. The upper adjusting plate 7 is connected with the rotary rod 11 and is sequentially connected with the adjusting rods 8 through bolts, the adjusting rods 8 are connected with the lower adjusting plate 14 through bolts, the connecting rod two 12.2 is connected with the electric push rod 13, and the connecting rod two 12.2 moves back and forth under the pushing of the electric push rod 13 to achieve height adjustment. The end of the electric push rod 13 is fixed on the upper surface of the lower adjusting plate 14, the lower adjusting plate 14 is fixed on the rotating disc 9, and when the inner rod of the electric push rod 13 is in a telescopic state, the connecting rod III 12.3 does reciprocating motion along the groove of the lower adjusting plate 14.
Another object of the present invention is to provide an automatic adjustment method for detecting weld defects by X-ray, comprising the following steps:
step 2.1, irradiating the weld seam by using a line laser camera 16, wherein the total length of a laser line is Ln = L1n-L2n, the width of the weld seam is Wn = W1n-W2n, and driving a 360-degree all-directional rotation module and a guide rail sliding module to enable L1n-W1n = L2n-W2n, and adjusting the angle and the position;
wherein Ln is the nth laser line, wn is the width of a welding seam in the nth laser line, L1n is the leftmost coordinate point of the nth laser line, L2n is the rightmost coordinate point of the nth laser line, W1n is the leftmost coordinate point of the nth welding seam, and W2n is the leftmost coordinate point of the nth welding seam;
2.2, measuring base metals from the positions of the first laser ranging sensor, the second laser ranging sensor, and the second laser ranging sensor, the first laser ranging sensor, the second laser ranging sensor, and the second laser ranging sensor to the base metals on the two sides of the welding line, wherein the distances are d1n and d2n respectively, driving a motor 6 of a welding line angle adjusting module to enable d1n = d2n, and finishing angle adjustment; wherein d1n is the first nth measurement distance of the laser ranging sensor, and d2n is the second nth measurement distance of the laser ranging sensor.
The invention has the beneficial effects that: the welding piece is arranged on the device, so that the relative adjustment of the thickness of a welding workpiece plate and the focal length of an X-ray flaw detector can be realized, the X-ray irradiation direction is perpendicular to the surface of a workpiece to be detected, the X-ray and a welding line can be perpendicularly irradiated by adjusting the angle of the welding workpiece placing table, the comprehensive coverage of the X-ray irradiation range in the welding line detection can be favorably realized, and the device effectively reduces the placing requirement of the workpiece to be detected. The focal length and the irradiation angle can be adjusted by combining the intelligent sensing and the mechanical structure, and the adjustment speed and the accuracy are high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention.
FIG. 1 is a schematic structural diagram of an automatic adjusting device for X-ray detection of weld defects according to the present invention;
FIG. 2 is a top view of a weld;
FIG. 3 is a side view of a weld joint prior to angular adjustment;
FIG. 4 is a side view of the angularly adjusted weld.
In the figure: 1. an X-ray flaw detector; 2. a support table; 3. a motor support frame; 4. a fixing clip; 5. welding a workpiece placing table; 6. a first motor; 7. an upper adjusting plate; 8. adjusting a rod; 9. rotating the disc; 10. a base; 11. rotating the rod; 12.1, connecting rod one; 12.2, a second connecting rod; 12.3, a third connecting rod; 13. an electric push rod; 14. a lower adjustment plate; 15. a second motor; 16. a line laser camera; 17.1, a first laser ranging sensor; 17.2, a second laser ranging sensor; 18.1, a first guide rail; 18.2, a second guide rail; 19.1, a first stepping motor; 19.2, a second stepping motor; 20. and a control module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 4, the adjusting device for detecting the weld defects by X-ray of the present invention comprises a laser angle measuring module, a control module, a guide rail sliding module, a 360-degree all-directional rotating module, a height adjusting module, an irradiation angle adjusting module and other accessories. The laser angle measuring module and the X-ray flaw detector window are located on the same plane, the middle position of a welding seam is determined through the line laser camera 16, the axis of the X-ray flaw detector window passes through the middle position of the welding seam through the guide rail sliding module, whether the distance from the X-ray flaw detector window to a welding seam base metal is equal is measured in real time through the laser distance measuring sensor, and whether the angle of the X-ray flaw detector window relative to the plane where the welding seam is located is in a vertical state is judged. 360 all-round rotation module arranges the base in on, realizes 360 all-round rotation module's arbitrary angular rotation through unable adjustment base, and height adjusting module is connected with 360 all-round rotation module through adjusting plate down, adjusts the height that the thing platform was put to the weldment under the electric putter effect, shines angle adjustment module and is connected with height adjusting module through last regulating plate, realizes the welding seam direction and adjusts.
Referring to fig. 1, the automatic adjusting device for detecting the weld defect X-ray of the present invention includes a laser angle measuring module, a guide rail sliding module, a control module, a 360 ° omni-directional rotation module, a weld angle adjusting module, a height adjusting module, and an irradiation angle adjusting module, wherein the laser angle measuring module and a window of an X-ray flaw detector are in the same plane, measure in real time whether the distance from the window of the X-ray flaw detector 1 to a weld parent metal is equal, and determine whether the angle of the window of the X-ray flaw detector 1 relative to the plane where the weld is located is in a perpendicular state; the guide rail sliding module is arranged on the base to realize the relative position adjustment of the welding line and the window of the X-ray flaw detector; the control module 20 is arranged in the base 10, and controls the movement of the mechanisms of the first motor 6, the second motor 15, the first stepping motor 19.1, the second stepping motor 19.2 and the like in the whole device on the basis of the data obtained by the laser angle measuring module; the 360-degree omnibearing rotation module drives the rotating disc 9 to rotate 360 degrees by a motor II 15 which is arranged in the base 10; the height adjusting module is connected with an upper adjusting plate 7 and a lower adjusting plate 14 through an adjusting rod 8, and height adjustment is realized under the combined action of an electric push rod 13 and connecting rods I, II, III 12.1, 12.2 and 12.3; the irradiation angle adjusting module is supported by a lower adjusting plate 14, and the first motor 6 drives the welding workpiece placing table 5 to rotate, so that the irradiation angle is adjusted. Other accessories comprise a base, a supporting platform and the like, and the fixing of the flaw detector and the motor is realized.
The first laser ranging sensor 17.1 and the second laser ranging sensor 17.2 are symmetrically arranged on two sides of the line laser camera 16, and jointly form a laser angle measuring module which is fixed on a cross beam part of the support table 2, two lower support ends of the support table 2 are fixed on the first guide rail 18.1 and the second guide rail 18.2 through connecting plates, the laser angle measuring module and a window of the X-ray flaw detector 1 are positioned on the same plane, and the line laser camera 16 and the axis of the X-ray flaw detector 1 are enabled to be superposed; the middle position of the welding seam is determined by the length of the broken line segment of the linear laser image obtained by the linear laser camera 16 and the broken line point, and the distances from the position of the laser ranging sensor I17.1 and the position of the laser ranging sensor II 17.2 to base material flat plates on two sides of the welding seam are measured respectively.
The guide rail sliding module comprises a first guide rail, a second guide rail, 18.1, 18.2, a first stepping motor, a second stepping motor, 19.1 and 19.2, the first guide rail, the second stepping motor, the first stepping motor, the second stepping motor and the 19.2 are respectively fixed on the base 10 through screws and connecting plates, and the relative position of the X-ray flaw detector 1 on the supporting table 2 and a welding seam on the welding workpiece placing table 5 is adjusted under the control of the on-line laser camera 16 and the control module 20, so that the axis of a window of the X-ray flaw detector 1 passes through the middle position of the welding seam.
The welding seam angle adjusting module comprises a fixing clamp 4, a welding workpiece placing table 5, a motor I6 and a rotary rod 11, wherein the fixing clamp 4 fixes the welding workpiece on the welding workpiece placing table 5, when an inner rod of an electric push rod 13 does not do telescopic motion and is in a static state, the motor I6 is clamped and fixed on a support frame 3 and is connected with the welding workpiece placing table 5 through the rotary rod 11, and the inclination angle of the welding workpiece placing table 5 is controlled; under the control of the first laser ranging sensor, the second laser ranging sensor, the third laser ranging sensor and the control module 20, the relative angle between the welding line on the welding workpiece placing table 5 and the X-ray flaw detector 1 is adjusted, and when the first laser ranging sensor, the second laser ranging sensor, and the second laser ranging sensor, the first laser ranging sensor, the second laser ranging sensor, and the 17.2 measure that the distances of base material flat plates on the two sides of the welding line are equal, the angle is adjusted in place.
The 360-degree all-directional rotation module is composed of a rotating disk 9, a base 10 and a second motor 15, the rotating disk 9 is installed on the base 10 and is driven by the second motor 15 to rotate, the rotating disk drives the second motor 15 to rotate by a certain angle, and then the 360-degree rotation module rotates by the same angle on the plane where the base of the motor is located. Under the feedback control of the on-line laser camera 16 and the control module 20, the direction of the welding seam on the welding workpiece placing table 5 is adjusted, so that the direction of the welding seam is parallel to the axis of the X-ray flaw detector 1.
The height adjusting module comprises a support frame 3, an upper adjusting plate 7, a plurality of adjusting rods 8, a first connecting rod 12.1, a second connecting rod 12.2, a third connecting rod 12.3, an electric push rod 13 and a lower adjusting plate 14, wherein the support frame 3 is fixed on a rotating disc 9, when an inner rod of the electric push rod 13 is in a telescopic state, a first motor 6 can slide up and down on the support frame 3, and when the electric push rod 13 is in a static state, the first motor 6 is fixed by an internal clamping mechanism of the support frame 3. The upper adjusting plate 7 is connected with the rotary rod 11 and is sequentially connected with the adjusting rods 8 through bolts, the adjusting rods 8 are connected with the lower adjusting plate 14 through bolts, the connecting rod two 12.2 is connected with the electric push rod 13, and the connecting rod two 12.2 moves back and forth under the pushing of the electric push rod 13 to achieve height adjustment. The end of the electric push rod 13 is fixed on the upper surface of the lower adjusting plate 14, the lower adjusting plate 14 is fixed on the rotating disc 9, and when the inner rod of the electric push rod 13 is in a telescopic state, the connecting rod III 12.3 does reciprocating motion along the groove of the lower adjusting plate 14.
Referring to fig. 1 to 4, the automatic adjustment method for detecting the weld defect X-ray of the present invention comprises the following steps:
And 2, after the welding workpiece is placed on the welding workpiece placing table 5, the laser angle measuring module starts to identify the central position of the welding seam and the angle information between the X ray and the surface of the welding seam.
And 2.1, irradiating the weld seam by using a line laser camera 16, wherein the total length of the laser line is Ln = L1n-L2n, the width of the weld seam is Wn = W1n-W2n, and driving the 360-degree all-directional rotation module and the guide rail sliding module. The specific adjustment is as follows:
when L1m-W1m is larger than L2m-W2m and L1k-W1k is larger than L2k-W2k for multiple times, the 360-degree all-directional rotating module is driven to rotate by an angle delta under the driving of a second motor 15; when L1m-W1m is smaller than L2m-W2m and L1k-W1k is smaller than L2k-W2k, the 360-degree all-directional rotation module is driven by the second motor 15 to rotate reversely by the angle delta.
When all L1n-W1n is larger than L2n-W2n, the guide rail sliding module is adjusted to move forwards; when all L1n-W1n are less than L2n-W2n, adjusting the guide rail sliding module to move reversely; and finally, finishing the angle and position adjustment of (L1 n-W1 n) - (L2 n-W2 n) < 0.1.
Wherein Ln is the nth laser line, wn is the width of a weld joint in the nth laser line, L1n is the leftmost coordinate point of the nth laser line, L2n is the rightmost coordinate point of the nth laser line, W1n is the leftmost coordinate point of the nth weld line, W2n is the leftmost coordinate point of the nth weld line, L1m is the leftmost coordinate point of the mth laser line, L2m is the rightmost coordinate point of the mth laser line, W1k is the leftmost coordinate point of the kth weld line, W2k is the leftmost coordinate point of the kth weld line, and m < k.
2.2, measuring base metals on two sides of a welding seam by two first laser ranging sensors, two second laser ranging sensors 17.1 and two second laser ranging sensors 17.2, wherein the distances are d1n and d2n respectively, driving a motor of the welding seam angle adjusting module, when d1n is larger than d2n, rotating the motor I6 by an angle theta, comparing the values of d1n and d2n again, if d1n is larger than d2n, continuously rotating the motor I6 by the angle theta until d1n-d2n is smaller than 0.1, and finishing angle adjustment; when d1n is smaller than d2n, the motor I6 rotates reversely by an angle theta, the values of d1n and d2n are compared again, if d1n is smaller than d2n, the motor I6 continues to rotate reversely by the angle theta until d1n-d2n is smaller than 0.1, and the angle adjustment is finished. Wherein d1n is the nth measurement distance of the laser ranging sensor, and d2n is the second nth measurement distance of the laser ranging sensor.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement and the like of the present invention shall be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a welding seam defect X ray detection's automatic regulating apparatus which characterized in that: the device comprises a laser angle measuring module, a guide rail sliding module, a control module, a 360-degree all-directional rotating module, a welding seam angle adjusting module, a height adjusting module and an irradiation angle adjusting module, wherein the laser angle measuring module and a window of an X-ray flaw detector (1) are positioned on the same plane, and the distance from the window of the X-ray flaw detector to a welding seam base metal is measured in real time; the guide rail sliding module is arranged on the base (10) to realize the relative position adjustment of the welding line and the window of the X-ray flaw detector (1); the control module is arranged in the base (10) and controls the movement of the first motor (6), the second motor (15), the first stepping motor (19.1) and the second stepping motor (19.2); the 360-degree all-directional rotation module is characterized in that a first motor (15) arranged in a base (10) drives a rotation disc (9) to rotate 360 degrees; the height adjusting module is connected with an upper adjusting plate (7) and a lower adjusting plate (14) through an adjusting rod (8), and realizes height adjustment under the combined action of an electric push rod (13) and connecting rods I, II and III (12.1, 12.2 and 12.3); the irradiation angle adjusting module is supported by a lower adjusting plate (14), and a welding workpiece placing table (5) is driven to rotate through a motor I (6), so that the irradiation angle is adjusted.
2. The automatic adjusting device of weld defect X-ray detection according to claim 1, characterized in that: the laser range finding sensor I (17.1) and the laser range finding sensor II (17.2) are symmetrically arranged at two sides of the line laser image detector (16) to jointly form a laser angle measuring module and fixed at the cross beam part of the support table (2), two lower support ends of the support table (2) are fixed on the guide rail I (18.1) and the guide rail II (18.2) through connecting plates, the laser angle measuring module and a window of the X-ray flaw detector (1) are positioned on the same plane, and the line laser image detector (16) and the axis of the X-ray flaw detector (1) are superposed; the middle position of the welding seam is determined by the length of a broken line segment and a broken line point of a linear laser image obtained by a linear laser camera (16), and the distances from the position to base metal flat plates on the two sides of the welding seam are respectively measured by a first laser ranging sensor (17.1) and a second laser ranging sensor (17.2).
3. The automatic adjusting device of weld defect X-ray detection according to claim 2, characterized in that: the X-ray flaw detector comprises a first guide rail (18.1), a second guide rail (18.2), a first stepping motor (19.1) and a second stepping motor (19.2), wherein a guide rail sliding module is formed together, the first guide rail (18.1) and the second guide rail (18.2) are fixed on a base (10), and the relative positions of a welding seam on an X-ray flaw detector (1) on a support table (2) and a welding workpiece placing table (5) are adjusted through the guide rail sliding module, so that the window axis of the X-ray flaw detector (1) passes through the middle position of the welding seam.
4. The automatic adjusting device of weld defect X-ray detection according to claim 1, characterized in that: the welding seam angle adjusting module is as follows: the fixed clamp (4) fixes the welding workpiece on the welding workpiece placing table (5), the motor I (6) is locked on the support frame (3) in a sliding mode and is connected with the welding workpiece placing table (5) through the rotary rod (11), and the inclination angle of the welding workpiece placing table (5) is controlled; the relative angle between the welding seam on the welding workpiece placing table (5) and the X-ray flaw detector (1) is adjusted through the welding seam angle adjusting module, and when distances from the positions measured by the first laser ranging sensor and the second laser ranging sensor (17.1 and 17.2) to base material flat plates on two sides of the welding seam are equal, angle adjustment in place is achieved.
5. The automatic adjusting device of weld defect X-ray detection according to claim 1, characterized in that: the 360-degree omnibearing rotation module is as follows: the rotating disc (9) is arranged on the base (10) and is driven by the second motor (15) to rotate; the direction of the welding seam on the welding workpiece placing table (5) is adjusted through the 360-degree all-directional rotating module, so that the direction of the welding seam is parallel to the axis of the X-ray flaw detector (1).
6. The automatic adjusting device for X-ray detection of weld defects according to claim 1, characterized in that: the height adjusting module is as follows: the support frame (3) is fixed on the rotating disc (9), when an inner rod of the electric push rod (13) is in a telescopic state, the motor I (6) slides up and down on the support frame (3), and when the electric push rod (13) is in a static state, the motor I (6) is fixed by an internal clamping mechanism of the support frame (3); the upper adjusting plate (7) is connected with the rotary rod (11) and is sequentially connected with each adjusting rod (8) through bolts, the adjusting rods (8) are connected with the lower adjusting plate (14) through bolts, the connecting rod II (12.2) is connected with the electric push rod (13), and the connecting rod II (12.2) moves back and forth under the pushing of the electric push rod (13) to realize height adjustment; the end part of the electric push rod (13) is fixed on the upper surface of the lower adjusting plate (14), the lower adjusting plate (14) is fixed on the rotating disk (9), and when the inner rod of the electric push rod (13) is in a telescopic state, the connecting rod III (12.3) does reciprocating motion along the groove of the lower adjusting plate (14).
7. An automatic adjustment method for the X-ray detection of the weld defects by using the automatic adjustment device for the X-ray detection of the weld defects as claimed in any one of claims 1 to 6, comprising the following steps:
step 1, placing a welding workpiece: the welding workpiece is stably placed on a welding workpiece placing table (5), and the direction of the welding seam is consistent with the axial direction of the X-ray flaw detector;
step 2, after the welding workpiece is placed on a welding workpiece placing table (5), a laser angle measuring module starts to identify the center position of the welding seam and the angle information between the X ray and the surface of the welding seam;
step 2.1, irradiating the weld joint by a line laser camera (16), wherein the total length of a laser line is Ln = L1n-L2n, the width of the weld joint is Wn = W1n-W2n, and driving a 360-degree all-directional rotation module and a guide rail sliding module to enable L1n-W1n = L2n-W2n, and adjusting the angle and the position;
wherein Ln is the nth laser line, wn is the width of a welding seam in the nth laser line, L1n is the leftmost coordinate point of the nth laser line, L2n is the rightmost coordinate point of the nth laser line, W1n is the leftmost coordinate point of the nth welding seam, and W2n is the leftmost coordinate point of the nth welding seam;
2.2, measuring base metals at the positions of the first laser ranging sensor and the second laser ranging sensor (17.1 and 17.2) to the two sides of the welding line, wherein the distances between the base metals at the two sides of the welding line are d1n and d2n respectively, driving a first motor (6) of a welding line angle adjusting module to enable d1n = d2n, and finishing angle adjustment; wherein d1n is the first nth measurement distance of the laser ranging sensor, and d2n is the second nth measurement distance of the laser ranging sensor.
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