Plane circumferential weld ultrasonic scanning device

Abstract

The utility model discloses an ultrasonic scanning device for a plane circumferential weld, which belongs to the field of ultrasonic scanning devices and is characterized in that a positioning device is arranged on a conveying belt and is matched with a scanning mechanism capable of lifting, displacing and positioning and rotating; when the device is used, a workpiece can be positioned on the conveying belt and then moved to the position below the scanning mechanism to be automatically positioned and scanned, the position of the workpiece is positioned through the positioning device on the conveying belt, the laser sensor can detect the center of the positioned workpiece, and then the workpiece is conveyed to a scanning position along with the conveying belt. After being positioned by the laser sensor, the scanning mechanism can adjust and lower the ultrasonic probe to press the workpiece detection part for scanning, and the ultrasonic probe can rotate and move along the positioning part of the laser sensor, so that the automatic scanning of the plane regular circular ring welding seam can be realized, and the uniformity of scanning force and the accuracy of a path are better ensured; and the labor intensity of workers can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of ultrasonic scanning devices, in particular to a plane girth weld ultrasonic scanning device. Background Art

[0002] Ultrasonic testing is one of the five conventional nondestructive testing methods. It is a technology that uses ultrasound to non-destructively check for internal defects and scars in materials or mechanical parts. Equipment that uses ultrasonic testing methods to detect internal defects in materials or structures is called ultrasonic testing equipment. Its principle is: when ultrasound propagates in the material being tested, the acoustic properties of the material and changes in the internal structure have a certain impact on the propagation of ultrasound. The technology of understanding the changes in material properties and structure by detecting the degree and condition of the impact of ultrasound is called ultrasonic testing. In the process of manufacturing metal workpieces, welding technology is often used. In order to check whether the weld is complete, after the workpiece is welded, it is usually necessary to perform ultrasonic flaw detection on the workpiece to detect whether there are cracks, pores, inclusions and other defects inside the workpiece. However, when the existing technology is used, manual inspection of the flat circular ring weld on the workpiece is mostly used. The handheld ultrasonic probe is pressed against the workpiece to detect along the welding trajectory. During the detection process, a certain pressure is required to make the ultrasonic probe contact with the scanning surface. However, due to the uneven size and direction of the pressure applied to the ultrasonic probe by humans, it is easy to cause the ultrasonic probe to have different parallelism between the bottom surface of the ultrasonic probe and the surface of the workpiece being measured during the detection process, resulting in inaccurate detection data and the inability to accurately control the movement distance of the ultrasonic probe, which makes it difficult to conduct quantitative analysis of welding defects during detection, and it is easy to miss small defects inside the workpiece, which can easily affect the detection results. At the same time, because manual handheld flaw detection is required, the labor intensity is high, time-consuming and labor-intensive when performing batch detection, which further creates the risk of misdetection. When the existing technology is used, the traditional ultrasonic probe assembly requires a more complicated assembly method such as locking, which makes it inconvenient to replace, adjust and repair. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In order to overcome the shortcomings of the prior art, a planar annular weld ultrasonic scanning device is proposed to solve the problem that when the prior art is used, the plane positive annular weld on the workpiece is mostly detected by manually holding an ultrasonic probe to press on the workpiece along the welding trajectory. During the detection process, a certain pressure is required to make the ultrasonic probe contact with the scanning surface. However, due to the uneven size and direction of the artificial pressure on the ultrasonic probe, it is easy to cause the ultrasonic probe to be in a state of uneven parallelism between the bottom surface of the ultrasonic probe and the surface of the workpiece being measured during the detection process, resulting in inaccurate detection data and the inability to accurately control the moving distance of the ultrasonic probe, resulting in difficulty in quantitative analysis of welding defects during detection, and the problem of small defects inside the workpiece being missed, which is easy to affect the detection results. At the same time, because manual handheld flaw detection is required, the manual labor intensity is high, time-consuming and labor-intensive when performing batch detection, which further causes the risk of misdetection.

[0005] Secondly, in order to solve the problem that when using the existing technology, the traditional ultrasonic probe assembly needs to be assembled by a relatively complicated assembly method such as locking, which leads to inconvenience in replacement, adjustment and maintenance.

[0006] (II) Technical solution

[0007] The utility model is realized by the following technical scheme: the utility model proposes a plane girth weld ultrasonic scanning device, the structure of which includes a conveyor belt and a scanning mechanism, the conveyor belt is used for placing workpieces, and the scanning mechanism is used for automatically scanning the workpieces on the conveyor belt;

[0008] Two positioning devices are mounted on the top of two side edges at one end of the conveyor belt in a mirror-image manner, and the positioning devices are used to locate the placement position of the workpiece;

[0009] The positioning device is composed of a rack, a push plate, a gear, an assembly seat, a positioning adjustment groove, a scale, a knob and an indicator strip. The assembly seat is fixed to the top side end of the conveyor belt, and a positioning adjustment groove is provided in the middle of the top of the assembly seat. The rack passes through the positioning adjustment groove away from the conveyor belt side, and the bottom of the rack fits with the bottom of the positioning adjustment groove. The rack is fixedly connected with a push plate on the side adjacent to the conveyor belt. The gear is assembled in the positioning adjustment groove through a shaft rod, and the bottom of the gear meshes with the top of the rack. One end of the assembly shaft rod of the gear passes through the assembly seat and is fixedly connected with the knob concentrically. An indicator strip is fixed on the side end face of the knob, and a scale is provided concentrically at the place where the assembly shaft rod of the gear passes through the assembly seat.

[0010] The scanning mechanism is composed of a cushion seat, a probe body, a first motor, a rotating shaft, a rotating assembly seat, a second motor, an assembly connecting rod, a position adjustment seat, a connecting plate, a third motor, a first screw, a slide rail, a lifting connection seat, a lifting assembly plate, a laser sensor, a positioning assembly plate, a second screw and a displacement adjustment groove. The cushion seat is arranged at the side end of the conveyor belt, a lifting assembly plate is fixed on the top of the cushion seat, a slide rail is fixed on the lifting assembly plate adjacent to the conveyor belt side, the first screw is limitedly assembled on the lifting assembly plate, the first screw is located on the side of the slide rail adjacent to the conveyor belt, a third motor is fixed on the top of the lifting assembly plate, and the third motor is used to drive the first screw to rotate, the lifting connection seat is covered and assembled on the slide rail adjacent to the lifting assembly plate end, the lifting connection seat is also penetrated by the first screw and is threadedly connected to the first screw, and the lifting connection seat is fixedly assembled with an assembly connecting rod through the connecting plate away from the lifting assembly plate side;

[0011] The assembly connecting rod is fixedly connected with a rotating assembly seat away from the connecting plate end, and a second motor is locked on the top of the rotating assembly seat, and the rotating shaft is arranged at the bottom of the rotating assembly seat, and the shaft of the second motor passes through the rotating assembly seat and is fixedly connected with the rotating shaft, and the bottom of the rotating shaft is fixedly connected to one side of the top of the position adjustment seat, and a displacement adjustment groove is provided at the bottom of the position adjustment seat, and the second screw is limitedly assembled in the displacement adjustment groove, and a first motor is fixed on the side end surface of the position adjustment seat adjacent to the rotating shaft side, and the first motor is used to drive the second screw to rotate, and a laser sensor is fixedly connected with the rotating shaft side of the bottom of the position adjustment seat via a positioning assembly plate, and the lens center of the laser sensor and the shaft center of the second motor are located on the same vertical straight line, and the top of the probe body fits in the displacement adjustment groove and cannot rotate, and the top of the probe body is sleeved on the second screw and threadedly connected to the second screw.

[0012] Furthermore, the probe body comprises an ultrasonic probe, a probe positioning plate, a splint, an adjustment connecting plate, an adjustment assembly block, a fixed assembly plate, a positioning hole, a splint shaft and a torsion spring, the adjustment assembly block fits and is assembled in the displacement adjustment groove and cannot rotate, the adjustment assembly block is sleeved on the second screw and is threadedly connected to the second screw, the adjustment assembly block is locked with an adjustment connecting plate away from the position adjustment seat side, the fixed assembly plate is provided with two pieces, the two fixed assembly plates are fixed to the bottom of the adjusting connecting plate in a mirror-image manner, a splint shaft is assembled on the upper side between the two fixed assembly plates, the splint is provided with two pieces, the two splints are assembled in a mirror-image manner, the upper side between the two splints is assembled between the two fixed assembly plates through the splint shaft, the torsion spring is sleeved on the splint shaft and connected to the two splints, a probe positioning plate is also fixed on the lower side between the two fixed assembly plates, a positioning hole is passed through the middle of the probe positioning plate, and the top part of the ultrasonic probe passes through the positioning hole and is connected to the probe positioning plate.

[0013] Furthermore, the clamping plate shaft, the torsion spring and the two clamping plates form a clamping structure, and the two clamping plates are clamped on the side ends of the ultrasonic probe under the action of the torsion spring.

[0014] Furthermore, the distance between the two clamping plates adjacent to the probe positioning plate is less than or equal to the distance between the two clamping plates when they are clamped on the side ends of the ultrasonic probe.

[0015] Furthermore, wiring ports are provided through the two fixed assembly plates.

[0016] Furthermore, a gap is left between the tops of the two clamping plates and the adjusting connecting plate.

[0017] Furthermore, the longest distance between the side end surface of the position adjustment seat and the center of the rotating shaft is less than the length of the assembly connecting rod.

[0018] Furthermore, the laser sensor is a laser positioning sensor.

[0019] Furthermore, the ultrasonic probe is an ultrasonic straight probe.

[0020] (III) Beneficial effects

[0021] One of the above technical solutions has the following advantages or beneficial effects:

[0022] 1) To solve the problem that when the existing technology is used, the plane positive circular weld detection on the workpiece is mostly carried out by manually holding the ultrasonic probe against the workpiece to detect along the welding track. During the detection process, a certain pressure is required to make the ultrasonic probe contact the scanning surface. However, due to the uneven size and direction of the artificial pressure on the ultrasonic probe, it is easy to cause the ultrasonic probe to be in a non-parallel state with the surface of the workpiece during the detection process, resulting in inaccurate detection data and the inability to accurately control the moving distance of the ultrasonic probe, which makes it difficult to quantitatively analyze welding defects during detection, and it is easy to miss small defects inside the workpiece. At the same time, because manual hand-held flaw detection is required, the labor intensity is high, time-consuming and labor-intensive when performing batch detection, which further causes the risk of misdetection. By providing a positioning device on the conveyor belt with a scanning mechanism that can perform lifting, displacement and positioning rotation, the device can be used to position the workpiece on the conveyor belt and then move to the bottom of the scanning mechanism for automatic positioning and scanning. During the inspection, the workpiece is first positioned on the conveyor belt by the positioning device on the conveyor belt, so that the laser sensor can detect the center of the positioned workpiece, and then the workpiece is conveyed to the scanning position with the conveyor belt. After the laser sensor is positioned at the scanning center, the scanning mechanism will adjust and lower the ultrasonic probe to press the workpiece detection position for scanning. The ultrasonic probe can be rotated and displaced along the positioning position of the laser sensor, so as to realize the automatic scanning of the plane positive circular ring weld, and can better constrain the position of the ultrasonic probe, so that the ultrasonic probe maintains the same parallelism with the surface of the workpiece to be measured during the scanning process, and ensures the uniformity of the pressure size and direction during detection, and can avoid the deviation, sliding, scratching, etc. of the ultrasonic probe caused by uneven force direction, and can reduce the labor intensity of manual labor. At the same time, the device can control the displacement size of the ultrasonic probe by controlling the pulse frequency of the motor, so as to realize small step precision scanning, and can better perform quantitative analysis of welding defects during detection, and effectively prevent the problem of missed detection of welding defects.

[0023] 2) To solve the problem that when using the prior art, the traditional ultrasonic probe assembly needs to be assembled in a more complicated way such as locking, which leads to inconvenience during replacement, adjustment and maintenance, a clamping plate is provided to clamp the probe body in cooperation with a fixed assembly plate, so that the ultrasonic probe can be firmly assembled by clamping after positioning, avoiding the need for locking buckles, etc. During maintenance and replacement, it is only necessary to loosen the clamping plate, which is quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model at a first depression angle;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model at a second depression angle;

[0027] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the scanning mechanism of the utility model from a depression angle;

[0029] Figure 5 It is a structural schematic diagram of the elevation angle viewing angle of the scanning mechanism of the utility model;

[0030] Figure 6 For this utility model Figure 5 A schematic diagram of the enlarged structure of B;

[0031] Figure 7 This is a schematic diagram of the elevation angle stereoscopic structure of the probe body of the utility model after removing a fixed assembly plate;

[0032] Figure 8 It is a schematic diagram of the three-dimensional structure at a depression angle after removing a fixed assembly plate from the probe body of the utility model;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure at a depression angle after removing a fixed assembly plate and a clamping plate from the probe body of the utility model;

[0034] In the figure: conveyor belt -1, scanning mechanism -2, positioning device -1a, rack -1a1, push plate -1a2, gear -1a3, assembly seat -1a4, positioning adjustment groove -1a5, scale -1a6, knob -1a7, indicator bar -1a8, cushion seat -2a, probe body -2b, first motor -2c, rotating shaft -2d, rotating assembly seat -2e, second motor -2f, assembly connecting rod -2g, position adjustment seat -2h, connecting plate -2i, third motor - 2j, first screw rod - 2k, slide rail - 2l, lifting connection seat - 2m, lifting assembly plate - 2n, laser sensor - 2o, positioning assembly plate - 2p, second screw rod - 2q, displacement adjustment groove - 2r, ultrasonic probe - 2b1, probe positioning plate - 2b2, clamping plate - 2b3, adjustment connection plate - 2b4, adjustment assembly block - 2b5, fixed assembly plate - 2b6, positioning hole - 2b7, clamping plate shaft - 2b8, torsion spring - 2b9, wiring port - 2b10. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0036] The utility model provides a plane girth weld ultrasonic scanning device: its structure comprises a conveyor belt 1 and a scanning mechanism 2, the conveyor belt 1 is used for placing workpieces, and the scanning mechanism 2 is used for automatically scanning the workpieces on the conveyor belt 1;

[0037] Two side tops at one end of the conveyor belt 1 are mirror-imaged with two positioning devices 1a, and the positioning devices 1a are used to locate the placement position of the workpiece;

[0038] The positioning device 1a is composed of a rack 1a1, a push plate 1a2, a gear 1a3, an assembly seat 1a4, a positioning adjustment groove 1a5, a scale 1a6, a knob 1a7 and an indicator strip 1a8. The assembly seat 1a4 is fixed to the top side of the conveyor belt 1. A positioning adjustment groove 1a5 is provided in the middle of the top of the assembly seat 1a4. The rack 1a1 passes through the positioning adjustment groove 1a5 away from the conveyor belt 1. The bottom of the rack 1a1 fits with the bottom of the positioning adjustment groove 1a5. The rack 1a1 is fixedly connected with a push plate 1a2 on the side adjacent to the conveyor belt 1, the gear 1a3 is assembled in the positioning adjustment groove 1a5 through a shaft, the bottom of the gear 1a3 is meshed with the top of the rack 1a1, one end of the assembly shaft of the gear 1a3 passes through the assembly seat 1a4 and is fixedly connected with the knob 1a7 concentrically, an indicator strip 1a8 is fixed on the side end face of the knob 1a7, and a scale 1a6 is concentrically provided at the assembly seat 1a4 where the assembly shaft of the gear 1a3 passes through;

[0039] The scanning mechanism 2 is composed of a cushion seat 2a, a probe body 2b, a first motor 2c, a rotating shaft 2d, a rotating assembly seat 2e, a second motor 2f, an assembly connecting rod 2g, a position adjustment seat 2h, a connecting plate 2i, a third motor 2j, a first screw 2k, a slide rail 2l, a lifting connection seat 2m, a lifting assembly plate 2n, a laser sensor 2o, a positioning assembly plate 2p, a second screw 2q and a displacement adjustment groove 2r. The cushion seat 2a is arranged at the side end of the conveyor belt 1, and a lifting assembly plate 2n is fixed on the top of the cushion seat 2a. The lifting assembly plate 2n is fixed on the side adjacent to the conveyor belt 1. The slide rail 21, the first screw rod 2k is limitedly assembled on the lifting assembly plate 2n, the first screw rod 2k is located on the side of the slide rail 21 adjacent to the conveyor belt 1, a third motor 2j is fixed on the top of the lifting assembly plate 2n, the third motor 2j is used to drive the first screw rod 2k to rotate, the lifting connection seat 2m is covered and assembled on the slide rail 21 adjacent to the lifting assembly plate 2n end, the lifting connection seat 2m is also penetrated by the first screw rod 2k and is threadedly connected to the first screw rod 2k, and the lifting connection seat 2m is fixedly assembled with an assembly connecting rod 2g on the side away from the lifting assembly plate 2n through the connecting plate 2i;

[0040] The assembly connecting rod 2g is fixedly connected to a rotating assembly seat 2e at the end away from the connecting plate 2i, a second motor 2f is locked to the top of the rotating assembly seat 2e, the rotating shaft 2d is arranged at the bottom of the rotating assembly seat 2e, the shaft of the second motor 2f passes through the rotating assembly seat 2e and is fixedly connected to the rotating shaft 2d, the bottom of the rotating shaft 2d is fixedly connected to one side of the top of the position adjustment seat 2h, a displacement adjustment groove 2r is arranged at the bottom of the position adjustment seat 2h, the second screw 2q is limitedly assembled in the displacement adjustment groove 2r, and the position adjustment seat 2h is adjacent to the A first motor 2c is fixed to the side end face of the rotating shaft 2d, and the first motor 2c is used to drive the second screw 2q to rotate. The bottom of the position adjustment seat 2h is adjacent to the rotating shaft 2d side and is fixedly connected to a laser sensor 2o through a positioning assembly plate 2p. The center of the lens of the laser sensor 2o and the center of the shaft of the second motor 2f are located on the same vertical line. The top of the probe body 2b fits in the displacement adjustment groove 2r and cannot rotate. The top of the probe body 2b is sleeved on the second screw 2q and is threadedly connected to the second screw 2q.

[0041] Wherein, the probe body 2b includes an ultrasonic probe 2b1, a probe positioning plate 2b2, a clamping plate 2b3, an adjustment connecting plate 2b4, an adjustment assembly block 2b5, a fixed assembly plate 2b6, a positioning hole 2b7, a clamping plate shaft 2b8 and a torsion spring 2b9, the adjustment assembly block 2b5 is fitted and assembled in the displacement adjustment groove 2r and cannot rotate, the adjustment assembly block 2b5 is sleeved on the second screw rod 2q and is threadedly connected to the second screw rod 2q, the adjustment assembly block 2b5 is locked with an adjustment connecting plate 2b4 on the side away from the position adjustment seat 2h, and the fixed assembly plates 2b6 are provided with two pieces, and the two fixed assembly plates 2b6 are fixed to the adjustment connecting plate 2 in a mirror image. b4 bottom, a splint shaft rod 2b8 is assembled on the upper side between the two fixed assembly plates 2b6, the two splints 2b3 are provided with two pieces, and the two splints 2b3 are assembled in a mirror image, and the upper side between the two splints 2b3 is assembled between the two fixed assembly plates 2b6 through the splint shaft rod 2b8, the torsion spring 2b9 is sleeved on the splint shaft rod 2b8 and connected to the two splints 2b3, and a probe positioning plate 2b2 is also fixed on the lower side between the two fixed assembly plates 2b6, a positioning hole 2b7 is penetrated through the middle of the probe positioning plate 2b2, and the top part of the ultrasonic probe 2b1 passes through the positioning hole 2b7 and is connected to the probe positioning plate 2b2.

[0042] The clamping plate shaft 2b8, the torsion spring 2b9 and the two clamping plates 2b3 form a clamping structure, and the two clamping plates 2b3 are clamped on the side ends of the ultrasonic probe 2b1 under the action of the torsion spring 2b9.

[0043] The distance between the two clamping plates 2b3 adjacent to the probe positioning plate 2b2 is less than or equal to the distance between the two clamping plates 2b3 when they are clamped on the side ends of the ultrasonic probe 2b1.

[0044] The two fixed assembly plates 2b6 are also provided with wiring ports 2b10, which are located above the probe positioning plate 2b2, so that the wiring of the ultrasonic probe 2b1 can pass through the probe positioning plate 2b2 and then out of the fixed assembly plate 2b6.

[0045] There is a gap between the tops of the two clamping plates 2b3 and the adjusting connecting plate 2b4 to facilitate pressing during clamping.

[0046] The longest distance between the side end surface of the position adjustment seat 2h and the center of the rotating shaft 2d is less than the length of the assembly connecting rod 2g.

[0047] Wherein, the laser sensor 2o is a laser positioning sensor.

[0048] Wherein, the ultrasonic probe 2b1 is an ultrasonic straight probe.

[0049] Implementation scheme: During the use of the device, the scanning surface of the workpiece can be placed on the conveyor belt 1 with the scanning surface facing upward, and then the positioning device 1a installed on the conveyor belt 1 is used to adjust the positioning of the workpiece. During the adjustment, the workpiece is placed between two symmetrically arranged positioning devices 1a, and then the knob 1a7 is rotated according to the scale 1a6 of the positioning device 1a for adjustment. When the knob 1a7 is rotated, the rack 1a1 is driven to move through the gear 1a3, so that the push plate 1a2 connected to the rack 1a1 moves with it, so that the positioning point for scanning the workpiece is adjusted to be on the same straight line with the detection point of the laser sensor 2o in the conveying direction through the positioning device 1a, and then the workpiece can be transported to the scanning mechanism 2 through the conveyor belt 1, and the laser sensor 2 of the scanning mechanism 2 After the workpiece is detected by o, the positioning point of the workpiece is made to coincide with the positioning point of the laser sensor 2o in combination with the positioning point data of the workpiece, and then the conveyor belt 1 stops conveying the workpiece, and the third motor 2j drives the first screw 2k to rotate. Since the first screw 2k can rotate but cannot move, and the lifting connection seat 2m threadedly connected to the first screw 2k can slide on the slide rail 2l but cannot rotate, when the first screw 2k rotates, the lifting connection seat 2m will drive the assembled connecting plate 2i to slide up and down on the slide rail 2l assembled on the lifting assembly plate 2n, so that the probe body 2b, the first motor 2c, the rotating shaft 2d, the rotating assembly seat 2e, the second motor 2f, and the position adjustment seat 2h assembled on the connecting plate 2i through the assembly connecting rod 2g can follow and slide up and down The first motor 2c can also drive the second screw 2q to rotate to drive the probe body 2b to move at the bottom of the position adjustment seat 2h according to the distance between the scanning point and the positioning point of the workpiece, so that the ultrasonic probe 2b1 of the probe body 2b can be against the scanning point of the workpiece after being lowered. Finally, when scanning, the second motor 2f can drive the position adjustment seat 2h to rotate along the rotation axis 2d. Since the rotation axis 2d and the detection lens of the laser sensor 2o are arranged on the same vertical straight line, when the positioning point of the workpiece is the center of the circular scanning point, the device can perform stable and accurate circular scanning of the workpiece without adjusting the distance of the probe body 2b after positioning. Scanning enables the device to better avoid uneven scanning pressure and trajectory deviation, and can better constrain the position of the ultrasonic probe, so that the ultrasonic probe 2b1 maintains the same parallelism with the surface of the workpiece being measured during the scanning process, and can avoid the deviation, sliding, scratching, etc. of the ultrasonic probe caused by uneven force direction. At the same time, the device only needs to manually position and place the workpiece, and no manual hand-held scanning is required. Only the value needs to be set to automatically scan batches of workpieces, which better reduces the labor intensity. The displacement size of the ultrasonic probe 2b1 can be controlled by controlling the pulse frequency of the motor, thereby realizing small-step precision scanning, which can better quantitatively analyze welding defects during detection and effectively prevent the problem of missed detection of welding defects;

[0050] When the ultrasonic probe 2b1 of the device needs to be replaced or repaired, it is only necessary to press the upper part of the fixed assembly plate 2b6 located on the clamping plate shaft 2b8, so that the clamping plate shaft 2b8 presses the torsion spring 2b9 to loosen the clamping of the ultrasonic probe 2b1, and the ultrasonic probe 2b1 can be quickly taken out downward for replacement or repair, avoiding cumbersome assembly methods such as locking, and achieving fast and convenient disassembly and assembly. During assembly, in addition to clamping, the top of the ultrasonic probe 2b1 will also press on the bottom of the probe positioning plate 2b2 for limit, to ensure stability during top pressure detection, and at the same time, a pressure sensor (not shown in the figure) can be installed between the probe positioning plate 2b2 and the top of the ultrasonic probe 2b1 to facilitate pressure detection when the ultrasonic probe 2b1 is pressed, so as to ensure the top pressure during scanning.

[0051] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0052] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0053] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A planar girth weld ultrasonic scanning device, the structure of which comprises a conveyor belt (1) and a scanning mechanism (2), wherein the conveyor belt (1) is used for placing workpieces, and the scanning mechanism (2) is used for automatically scanning the workpieces on the conveyor belt (1); Features: Two side tops at one end of the conveyor belt (1) are equipped with two positioning devices (1a) in a mirror-image manner, and the positioning devices (1a) are used to locate the placement position of the workpiece; The positioning device (1a) is composed of a rack (1a1), a push plate (1a2), a gear (1a3), an assembly seat (1a4), a positioning adjustment groove (1a5), a scale (1a6), a knob (1a7) and an indicator strip (1a8); the assembly seat (1a4) is fixed to the top side end of the conveyor belt (1); a positioning adjustment groove (1a5) is provided in the middle of the top end of the assembly seat (1a4); the rack (1a1) passes through the positioning adjustment groove (1a5) on the side away from the conveyor belt (1); the bottom of the rack (1a1) is in contact with the bottom of the positioning adjustment groove (1a5) The rack (1a1) is fixedly connected with a push plate (1a2) on the side adjacent to the conveyor belt (1); the gear (1a3) is assembled in the positioning adjustment groove (1a5) through a shaft rod; the bottom of the gear (1a3) is meshed with the top of the rack (1a1); one end of the assembly shaft rod of the gear (1a3) passes through the assembly seat (1a4) and is fixedly connected with the knob (1a7) cocentrically; an indicator strip (1a8) is fixed to the side end surface of the knob (1a7); and a scale (1a6) is cocentrically provided at the location where the assembly seat (1a4) is penetrated by the assembly shaft rod of the gear (1a3); The scanning mechanism (2) is composed of a cushion seat (2a), a probe body (2b), a first motor (2c), a rotating shaft (2d), a rotating assembly seat (2e), a second motor (2f), an assembly connecting rod (2g), a position adjustment seat (2h), a connecting plate (2i), a third motor (2j), a first screw (2k), a slide rail (2l), a lifting connection seat (2m), a lifting assembly plate (2n), a laser sensor (2o), a positioning assembly plate (2p), a second screw (2q) and a displacement adjustment groove (2r). The cushion seat (2a) is arranged at the side end of the conveyor belt (1), and a lifting assembly plate (2n) is fixed on the top of the cushion seat (2a). The lifting assembly plate (2n) is adjacent to the conveyor belt (1). ) side is fixed with a slide rail (2l), the first screw rod (2k) is limitedly assembled on the lifting assembly plate (2n), the first screw rod (2k) is located on the side of the slide rail (2l) adjacent to the conveyor belt (1), a third motor (2j) is fixed on the top of the lifting assembly plate (2n), the third motor (2j) is used to drive the first screw rod (2k) to rotate, the lifting connection seat (2m) is covered and assembled on the slide rail (2l) adjacent to the lifting assembly plate (2n), the lifting connection seat (2m) is also penetrated by the first screw rod (2k) and is threadedly connected to the first screw rod (2k), and the lifting connection seat (2m) is fixedly assembled with an assembly connecting rod (2g) on ​​the side away from the lifting assembly plate (2n) through the connecting plate (2i); The end of the assembly connecting rod (2g) away from the connecting plate (2i) is fixedly connected to a rotating assembly seat (2e), the top of the rotating assembly seat (2e) is locked with a second motor (2f), the rotating shaft (2d) is arranged at the bottom of the rotating assembly seat (2e), the shaft of the second motor (2f) passes through the rotating assembly seat (2e) and is fixedly connected to the rotating shaft (2d), the bottom of the rotating shaft (2d) is fixedly connected to one side of the top of the position adjustment seat (2h), the bottom of the position adjustment seat (2h) is provided with a displacement adjustment groove (2r), the second screw rod (2q) is limitedly assembled in the displacement adjustment groove (2r), the position adjustment seat (2h) A first motor (2c) is fixed to the side end surface adjacent to the rotating shaft (2d), and the first motor (2c) is used to drive the second screw (2q) to rotate. A laser sensor (2o) is fixedly connected to the bottom of the position adjustment seat (2h) adjacent to the rotating shaft (2d) through a positioning assembly plate (2p). The center of the lens of the laser sensor (2o) and the center of the shaft of the second motor (2f) are located on the same vertical line. The top of the probe body (2b) fits in the displacement adjustment groove (2r) and cannot rotate. The top of the probe body (2b) is sleeved on the second screw (2q) and is threadedly connected to the second screw (2q).

2. The ultrasonic scanning device for plane girth weld according to claim 1, characterized in that: The probe body (2b) comprises an ultrasonic probe (2b1), a probe positioning plate (2b2), a clamping plate (2b3), an adjustment connecting plate (2b4), an adjustment assembly block (2b5), a fixed assembly plate (2b6), a positioning hole (2b7), a clamping plate shaft (2b8) and a torsion spring (2b9); the adjustment assembly block (2b5) fits in the displacement adjustment groove (2r) and cannot rotate; the adjustment assembly block (2b5) is sleeved on the second screw rod (2q) and is threadedly connected to the second screw rod (2q); the adjustment assembly block (2b5) is locked with an adjustment connecting plate (2b4) on the side away from the position adjustment seat (2h); two fixed assembly plates (2b6) are provided, and the two fixed assembly plates (2b6) are fixed to the adjustment connecting plate in a mirror-image manner. (2b4) bottom, a clamping plate shaft rod (2b8) is installed on the upper side between the two fixed assembly plates (2b6), the clamping plates (2b3) are provided with two pieces, the two clamping plates (2b3) are assembled in a mirror-like manner, the upper side between the two clamping plates (2b3) is assembled between the two fixed assembly plates (2b6) through the clamping plate shaft rod (2b8), the torsion spring (2b9) is sleeved on the clamping plate shaft rod (2b8) and connected to the two clamping plates (2b3), and a probe positioning plate (2b2) ​​is also fixed on the lower side between the two fixed assembly plates (2b6), a positioning hole (2b7) is penetrated in the middle of the probe positioning plate (2b2), and the top part of the ultrasonic probe (2b1) passes through the positioning hole (2b7) and is connected to the probe positioning plate (2b2).

3. The ultrasonic scanning device for plane girth weld according to claim 2, characterized in that: The clamping plate shaft (2b8), the torsion spring (2b9) and the two clamping plates (2b3) form a clamping structure, and the two clamping plates (2b3) are clamped on the side ends of the ultrasonic probe (2b1) under the action of the torsion spring (2b9).

4. The ultrasonic scanning device for plane girth weld according to claim 2, characterized in that: The distance between the two clamping plates (2b3) adjacent to the probe positioning plate (2b2) ​​is less than or equal to the distance between the two clamping plates (2b3) when clamped on the side ends of the ultrasonic probe (2b1).

5. The planar girth weld ultrasonic scanning device according to claim 2, characterized in that: The two fixed assembly plates (2b6) are also provided with wiring ports (2b10) extending therethrough.

6. The ultrasonic scanning device for plane girth weld according to claim 2, characterized in that: A gap is left between the tops of the two clamping plates (2b3) and the adjusting connecting plate (2b4).

7. The device for ultrasonic scanning of a plane girth weld according to claim 1, characterized in that: The longest distance between the side end surface of the position adjustment seat (2h) and the center of the rotating shaft (2d) is less than the length of the assembly connecting rod (2g).

8. The ultrasonic scanning device for plane girth weld according to claim 1, characterized in that: The laser sensor (2o) is a laser positioning sensor.

9. The ultrasonic scanning device for plane girth weld according to claim 2, characterized in that: The ultrasonic probe (2b1) is an ultrasonic straight probe.

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