Multi-angle weld seam radiographic inspection device

Abstract

The utility model relates to metal plating technology field, concretely is a kind of multi-angle weld ray detection device. Including rack and the detection equipment of installation in the upper part of rack, front, rear clamping mechanism are installed on rack by lifting hydraulic cylinder, each clamping mechanism includes the lifting seat connected with lifting hydraulic cylinder, support plate and rotating seat, support plate is connected with the opening and closing mechanism of front, rear clamping mechanism, the inside of rotating seat is equipped with clamping plate;Rotary motor is equipped with in support plate outside, rotating seat is connected with the shaft of rotary motor, torsion motor is equipped in rotating seat, torsion motor is connected with the ratchet wheel being set to clamping plate outside, ratchet wheel is connected with clamping plate by bearing;In each ratchet tooth groove is set with the ratchet pawl cooperation, the middle part of each ratchet pawl is connected with clamping plate by shaft, and each ratchet pawl is extended to clamping plate outside, and is equipped with clamping jaw in one end away from ratchet wheel. The utility model can make detection piece adjust to arbitrary angle to complete multi-angle detection, and realize automation, continuous detection, effectively improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal coating technology, specifically a multi-angle weld radiographic testing device. Background Technology

[0002] Metal plating is a process that improves the performance of a workpiece by depositing a thin film of metal on the surface of a substrate. Before plating, radiographic testing is often used to perform non-destructive testing on the weld to identify internal defects.

[0003] Current inspection methods require fixing the workpiece on a horizontal platform and irradiating it with a single-sided X-ray source. This results in the inability to adjust the workpiece angle, making it difficult to effectively detect defects in different orientations. Furthermore, when processing multiple workpieces, manual repositioning is required for each one, which prevents automated continuous operation and leads to low inspection efficiency. Utility Model Content

[0004] The purpose of this invention is to design a multi-angle weld radiographic testing device for multi-angle weld inspection and to achieve automated and continuous inspection.

[0005] This utility model includes a frame and a flaw detection device mounted on the upper part of the frame. A front clamping mechanism and a rear clamping mechanism are mounted on the frame via a lifting hydraulic cylinder. Each clamping mechanism includes a lifting seat connected to the lifting hydraulic cylinder, a support plate inside the lifting seat, and a rotating seat inside the support plate. The support plate is connected to the opening and closing mechanism of the front clamping mechanism and the rear clamping mechanism. A clamping plate is mounted on the inner side of the rotating seat. A rotating motor is provided on the outer side of the support plate. The rotating seat is connected to the shaft of the rotating motor. A torsion motor is provided inside the rotating seat. The torsion motor is connected to a ratchet with at least two ratchet grooves located on the outer side of the clamping plate. The ratchet is connected to the clamping plate via a bearing. A pawl is provided in each ratchet groove to cooperate with it. The middle part of each pawl is connected to the clamping plate via a shaft. The end of each pawl away from the ratchet extends outside the clamping plate and is provided with a clamping pawl perpendicular to the clamping plate and facing the other clamping plate.

[0006] Furthermore, a guide tooth is provided in the middle of each ratchet groove, and the pawl that cooperates with it has a first guide groove with a corresponding shape.

[0007] Furthermore, the opening and closing mechanism includes an opening and closing motor mounted on a lifting seat with a front clamping mechanism or a rear clamping mechanism, a bidirectional screw connected to the opening and closing motor passing through the support plates of the front clamping mechanism and the rear clamping mechanism, and a nut set on the support plate connected to the bidirectional screw.

[0008] Furthermore, the frame has a vertical second guide groove, and each lifting seat is provided with a protrusion that mates with the second guide groove.

[0009] Furthermore, the bidirectional screw passes through the protrusions of the two lifting seats.

[0010] Furthermore, the frame includes a left upright and a right upright, as well as a flaw detection device located between the left and right uprights. Lifting hydraulic cylinders are respectively installed on the left and right uprights and are connected to the left and right parts of the front and rear lifting seats respectively. Vertical second guide grooves are respectively installed on the left and right uprights, and both ends of each lifting seat are engaged with the second guide grooves through protrusions. A bidirectional screw is installed on the protrusion on the left side, and a guide shaft is fixedly engaged with the protrusion on the right side of the front and rear lifting seats.

[0011] Furthermore, a base is provided below the two clamping plates, a conveyor belt is provided on the base, a position sensor corresponding to the position of the detection piece is provided on the base, a first pressure sensor is provided on the inner surface of the clamping plates, and a second pressure sensor is provided on the gripper or a torque sensor is provided on the torsion motor.

[0012] The beneficial effects of this utility model are: This invention utilizes a front and rear clamping mechanism in conjunction with a ratchet-pawl clamp. An opening and closing motor drives the clamping plates of the front and rear clamping mechanisms for initial clamping, followed by a torsion motor driving the pawl to fully grip the workpiece, forming a double clamping guarantee. Furthermore, precise control of the clamping force via pressure or motor torsion sensor feedback ensures both clamping stability and effectively prevents damage to the workpiece due to overpressure.

[0013] Subsequently, the workpiece is rotated as a whole by a rotating motor, allowing the workpiece to be adjusted to any detection angle, enabling multi-angle detection of the weld seam of the workpiece, thereby improving the accuracy and reliability of the detection results. The position sensor determines the workpiece and the first and second pressure sensors monitor the clamping force of the clamping plates and jaws, thereby achieving automated and continuous detection through program control, effectively improving detection efficiency. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention in its working state; Figure 2 This is a schematic diagram of the right-side structure of this utility model; Figure 3 for Figure 2 A cross-sectional view along the AA direction; Figure 4 for Figure 2 Cross-sectional view along the BB direction (including the inspection piece); Figure 5 for Figure 2 A cross-sectional view along the CC direction; Figure 6 for Figure 5 A magnified view of a section at point D; Figure 7 for Figure 6A partial sectional view along the EE direction; The components include: 1. Frame; 101. Second guide groove; 102. Guide seat; 103. Guide rod; 104. Boss; 105. Left upright; 106. Right upright; 2. Lifting hydraulic cylinder; 3. Lifting seat; 301. Protrusion; 302. Through hole; 4. Opening and closing mechanism; 401. Opening and closing motor; 402. Bidirectional screw; 403. Nut; 404. Guide shaft; 5. Support plate; 6. Rotating seat; 601. Rotating plate; 602. Connecting plate. 603. Connecting screw; 604. Bearing; 7. Clamping plate; 8. Ratchet; 801. Racket groove; 802. Guide tooth; 9. Pawl; 901. Clamping jaw; 902. Shaft; 903. First guide groove; 10. Torsion motor; 11. Rotation motor; 12. Detection piece; 13. Base; 14. Conveyor belt; 15. Position sensor; 16. Rubber sleeve; 17. First pressure sensor; 18. Second pressure sensor; 19. Flaw detection equipment. Detailed Implementation

[0015] Unless otherwise specified, in this utility model, the side furthest from the center line of symmetry of the conveyor belt 14 is defined as the outer side of this embodiment, and vice versa. Figure 1 The diagram defines the up / down and left / right directions in this embodiment; Figure 2 The left side is used to define the front in this embodiment, and the right side is used to define the rear.

[0016] As shown in the figure, this embodiment includes a frame 1, a flaw detection device 19 mounted on the upper part of the frame 1, and a conveying mechanism passing through the lower part of the frame 1. The frame 1 includes a left upright 105 and a right upright 106, and the flaw detection device 19 located between the left and right uprights. The left upright 105 and the right upright 106 are both n-shaped, and their front and rear sides at the top are integrally connected by side plates. Outwardly protruding bosses 104 are welded to their opposite sides. The flaw detection device 19 is disposed between the left and right uprights and supported by the bosses 104.

[0017] Lifting hydraulic cylinders 2 and vertical second guide grooves 101 are respectively provided on the left upright 105 and the right upright 106. At least one lifting hydraulic cylinder 2 is provided on each of the left and right uprights 105 and 106, and the lifting hydraulic cylinders 2 on the left and right uprights are arranged diagonally, controlled by a hydraulic synchronization system. Guide seats 102, fixedly connected to the uprights, and guide rods 103 are respectively provided on the left upright 105 and the right upright 106 at symmetrical positions to assist the lifting hydraulic cylinders 2 in providing guidance and support. The vertical second guide grooves 101 are respectively formed on the front and rear side plates of the left upright 105 and the right upright 106.

[0018] In this embodiment, the frame 1 is equipped with a front clamping mechanism and a rear clamping mechanism via lifting hydraulic cylinders 2. Each clamping mechanism includes a lifting seat 3 connected to the lifting hydraulic cylinder 2, a support plate 5 on the inner side of the lifting seat 3, and a rotating seat 6 on the inner side of the support plate 5. The support plate 5 is connected to the opening and closing mechanism 4 of the front and rear clamping mechanisms. A clamping plate 7 is installed on the inner side of the rotating seat 6. Lifting hydraulic cylinders 2 are respectively installed on the left upright 105 and the right upright 106, and are respectively connected to the left and right parts of the front and rear lifting seats 3 to achieve diagonal arrangement. A guide rod 103 is fixedly connected to the other diagonal end of the lifting seat 3, which, together with the lifting hydraulic cylinder 2, provides guidance and support for the overall lifting. The frame 1 has a vertical second guide groove 101, and each lifting seat 3 is provided with a protrusion 301 that cooperates with the second guide groove 101.

[0019] Each lifting seat 3 has a protrusion 301 centered on the outer side of its left and right sides. The left upright 105 and right upright 106 are respectively provided with a vertical second guide groove 101. The left and right parts of the lifting seat 3 cooperate with the second guide groove 101 through the protrusion 301. A through hole 302 is opened at the center of each lifting seat 3.

[0020] The opening and closing mechanism 4 described in this embodiment includes an opening and closing motor 401 mounted on the lifting seat 3 of the front clamping mechanism or the rear clamping mechanism. A bidirectional screw 402 connected to the opening and closing motor 401 passes through the support plates 5 of the front clamping mechanism and the rear clamping mechanism. A nut 403 provided on the support plate 5 is connected to the bidirectional screw 402. The bidirectional screw 402 passes through the protrusions 301 of the two lifting seats 3, and the opening and closing motor 401 is fixedly mounted on the outside of the protrusions 301 of the lifting seat 3 by bolts.

[0021] The bidirectional screw 402 is mounted on the left protrusion 301, and a guide shaft 404 is fixedly engaged with the right protrusion 301 of the front and rear lifting seats 3. The bidirectional screw 502 is mounted at the center of the left protrusion 401 of the two lifting seats 3 via bearings, and the front end of the bidirectional screw 502 is keyed to the opening and closing motor 501 provided on the left protrusion 401 of the front lifting seat 3; a guide shaft 504 is provided at the center of the right protrusion 401 of the two lifting seats 3, symmetrically arranged with the bidirectional screw 502, for connecting the two lifting seats 3, and the guide shaft 404 passes through the support plate 5 inside the lifting seat 3 and slides with it.

[0022] The support plates 5 are arranged in pairs between and parallel to the front and rear lifting seats 3. The left end of each support plate 5 is passed through a double-acting screw 402 via a nut 403, and the right end is passed through a guide shaft 404. Driven by the opening and closing motor 401, the front and rear support plates 5 move closer to or further away from the center of the double-acting screw 402 to achieve the opening and closing action. The guide shaft 404 provides guidance and support for each support plate 5. A rotating seat 6 is provided on the inner side of each support plate 5.

[0023] In this embodiment, a rotating seat 6 is provided on the inner side of both the front and rear support plates 5. The rotating seat 6 is composed of a rotating plate 601, a connecting plate 602, a connecting screw 603, and a bearing 604, and a clamping plate 7 is installed on its inner side. Each support plate 5 has a groove on its inner side that rotatably engages with the rotating seat 6. The rotating plate 601 of the rotating seat 6 is rotatably connected to the support plate 5 through the bearing 604. The connecting plate 602 is disposed between the rotating plate 601 and the clamping plate 7. The connecting screw 603, in conjunction with a hexagonal nut, fixes the clamping plate 7, the connecting plate 602, and the rotating plate 601 together.

[0024] A rotary motor 11 is mounted on the outer side of the support plate 5. The shaft of the rotary motor 11 passes through the center of the support plate 5 and is keyed to the rotating plate 601, thereby driving the clamping plate 7 to rotate. When clamping and inspecting the workpiece, multi-angle inspection of the weld seam of the workpiece can be achieved. A through hole 302 is opened at the center of each lifting seat 3, corresponding to the position of the rotary motor 11 on the outer side of the support plate 5. The diameter of the through hole 302 is larger than the outer diameter of the rotary motor 11 to ensure the opening and closing of the clamping mechanism.

[0025] A torsion motor 10 is installed inside the rotating seat 6. The torsion motor 10 is connected to a ratchet 8 with at least two ratchet grooves 801 located on the outside of the clamping plate 7. The ratchet 8 is connected to the clamping plate 7 via bearings. The ratchet 8 is located between the clamping plate 7 and the connecting plate 602. The inner side of the ratchet 8 is connected to the outer side of the clamping plate 7 via bearings, and the outer side of the ratchet 8 is connected to the connecting plate 602 via bearings. The torsion motor 10 is installed on the outer side of the connecting plate 602. The torsion motor 10 is fixedly connected to the connecting plate 602 by bolts, and its rotating shaft is connected to the center key of the ratchet 8, thereby driving the ratchet 8 to rotate.

[0026] The ratchet 8 described in this embodiment has at least two ratchet grooves 801, and a pawl 9 is provided in each ratchet groove 801 to cooperate with it. The middle part of each pawl 9 is connected to the outer side of the clamping plate 7 through a shaft 902. The end of each pawl 9 away from the ratchet 8 extends to the edge of the clamping plate 7 and is provided with a gripper 901 perpendicular to the clamping plate 7 and facing the other clamping plate 7. A guide tooth 802 is provided in the middle of each ratchet groove 801, and the pawl 9 that cooperates with it has a first guide groove 903 with a corresponding shape. The workpiece to be detected by this utility model is a rectangular thin plate, so the ratchet 8 only needs two pawls 9 to ensure gripping. If the workpiece to be detected is of other shapes or irregular shapes, the ratchet 8 can be replaced. The ratchet 8 is designed according to the shape of the workpiece to be detected, increasing the ratchet grooves 801 or adjusting the structure of the pawls 9, thereby improving its practicality.

[0027] Each clamping plate 7 and gripper 901 is fitted with a rubber sleeve 17 on the side facing the workpiece to be inspected. This sleeve provides protection and prevents slippage when clamping the workpiece. The rubber sleeve 17 is fastened with screws and can be easily disassembled and replaced when it is severely worn.

[0028] The conveying mechanism described in this embodiment is located below the front and rear clamping mechanisms and passes through the frame 1. It includes a base 13, a conveyor belt 14, and a drive device. This part adopts existing technology and will not be described in detail. The base 13 is provided below the two clamping plates 7. The conveyor belt 14 is provided on the base 13. The position sensor 15 corresponding to the position of the detection piece is provided on the base 13. The inner surface of the clamping plates 7 is provided with a first pressure sensor 17, and the gripper is provided with a second pressure sensor 18 or a torque sensor is provided on the torsion motor.

[0029] A position sensor 15 is installed on one side of the base 13 at the location of the detection component to detect the presence of a component and control the conveyor belt 14 to move the component. A first pressure sensor 17 is installed on the side of the clamping plate 7 facing the detection component, and a second pressure sensor 18 is installed on the side of the gripper 901 facing the detection component, or a torque sensor is installed on the torsion motor 10 of the gripper, to control the clamping force of the clamping plate 7 and the gripper 901. The first pressure sensor 17 and the second pressure sensor 18 are respectively installed inside the rubber sleeves 16 fitted on the clamping plate 7 and the gripper 901.

[0030] This embodiment operates under program control. First, it monitors whether the position sensor 15 of the detection component 12 is triggered. If the detection component 12 is detected, the conveyor belt 14 stops, and the lifting hydraulic cylinder 2 descends to the program-set position, activating the opening and closing motor 401. This drives the clamping plate 7 to clamp the detection component 12. The clamping force is controlled by judging the pressure of the first pressure sensor 17 on the clamping plate 7. After the clamping is in place, the torsion motor 10 is activated, driving the ratchet 8 to drive the pawl 9, thereby causing each jaw 901 to grip the detection component 12. Then, the clamping force is controlled by judging the pressure of the second pressure sensor 18 on the jaw 901 or the torsion motor 10. The torque sensor of the rotary motor controls the clamping force of the gripper 901 and, after confirming that the gripper is in place, the lifting hydraulic cylinder 2 raises the clamping mechanism to the detection height. When inspecting the workpiece at different angles, the rotary motor 11 is started to control the rotation of the clamping plate 7. After the inspection is completed, the lifting hydraulic cylinder 2 descends to the set position, places the inspected workpiece 12 on the inspection workpiece position on the conveyor belt 14, and the clamping plate 7 and gripper 901 release the inspected workpiece and return to the initial position. At this time, the position sensor 15 of the inspection workpiece position senses the inspection workpiece 12 again, and the conveyor belt 14 starts to move forward, repeating the above steps. Thus, this device can realize multi-angle inspection of the weld of the inspection workpiece 12 and achieve automated and continuous inspection, thereby improving inspection efficiency.

[0031] The initial position of the lifting hydraulic cylinder 2 is a height that does not obstruct the workpiece's movement. For products with a fixed shape, the advancing distance can be set, or the advancing time can be calculated based on the rotational speed of the opening and closing motor 501 to determine the advancing distance and ensure proper clamping, thus eliminating the need for sensor detection. The program control system of this utility model adopts existing technology and can be implemented through a PLC control system.

Claims

1. A multi-angle weld radiographic testing device, comprising a frame and a testing device mounted on the upper part of the frame, characterized in that: The frame is equipped with a front clamping mechanism and a rear clamping mechanism via a lifting hydraulic cylinder. Each clamping mechanism includes a lifting seat connected to the lifting hydraulic cylinder, a support plate inside the lifting seat, and a rotating seat inside the support plate. The support plate is connected to the opening and closing mechanism of the front and rear clamping mechanisms. A clamping plate is installed inside the rotating seat. A rotary motor is installed on the outside of the support plate. The rotating seat is connected to the shaft of the rotary motor. A torsion motor is installed inside the rotating seat. The torsion motor is connected to a ratchet with at least two ratchet grooves located on the outside of the clamping plate. The ratchet is connected to the clamping plate via a bearing. A pawl is provided in each ratchet groove to cooperate with it. The middle part of each pawl is connected to the clamping plate via a shaft. The end of each pawl away from the ratchet extends outside the clamping plate and is provided with a clamping pawl perpendicular to the clamping plate and facing the other clamping plate.

2. The multi-angle weld radiographic testing device according to claim 1, characterized in that: Each ratchet groove has a guide tooth in the middle, and the pawl that mates with it has a first guide groove with a corresponding shape.

3. The multi-angle weld radiographic testing device according to claim 1 or 2, characterized in that: The opening and closing mechanism includes an opening and closing motor mounted on a lifting seat with a front clamping mechanism or a rear clamping mechanism. A bidirectional screw connected to the opening and closing motor passes through the support plates of the front clamping mechanism and the rear clamping mechanism. A nut set on the support plate is connected to the bidirectional screw.

4. The multi-angle weld radiographic testing device according to claim 3, characterized in that: The frame has a vertical second guide groove, and each lifting seat is provided with a protrusion that mates with the second guide groove.

5. The multi-angle weld radiographic testing device according to claim 4, characterized in that: The bidirectional screw passes through the protrusions of the two lifting seats.

6. The multi-angle weld radiographic testing device according to claim 4, characterized in that: The frame includes a left upright and a right upright, as well as a flaw detection device located between the left and right uprights. Lifting hydraulic cylinders are respectively installed on the left and right uprights and are connected to the left and right parts of the front and rear lifting seats respectively. Vertical second guide grooves are respectively installed on the left and right uprights, and the two ends of each lifting seat are respectively engaged with the second guide grooves through protrusions. A bidirectional screw is installed on the protrusion on the left side, and a guide shaft is fixedly engaged with the protrusion on the right side of the front and rear lifting seats.

7. The multi-angle weld radiographic testing device according to claim 1 or 2, characterized in that: A base is provided below the two clamping plates, a conveyor belt is provided on the base, a position sensor corresponding to the position of the detection piece is provided on the base, a first pressure sensor is provided on the inner surface of the clamping plates, and a second pressure sensor is provided on the gripper or a torque sensor is provided on the torsion motor.

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