CN102809603A - Lower horizontal type ultrasonic automatic defectoscope for large-sized rolling shell ring piece - Google Patents

Abstract

The invention relates to a lower horizontal type ultrasonic automatic defectoscope for a large-sized rolling shell ring piece. The defectoscope comprises a machine base, an internal defect detecting robot, an external defect detecting robot and a driving motor, and is characterized in that a guide track sleeper base is fixedly linked with a robot base; a driving carrier roller guide track is vertically connected with the guide track sleeper base through a moving pair; a driving carrier roller is installed on the driving carrier roller guide track through a moving pair; a driven carrier roller is installed at the other side of the machine base; a support frame in an internal guide track and a support frame outside the internal guide track are arranged at the outer sides of the driving carrier roller and the driven carrier roller respectively; an auxiliary track is fixedly linked inside the machine base; a track support trolley is arranged on the auxiliary track through a rolling support; an internal guide track beam is arranged between the upper part of the track support trolley and a guide groove of the support frame outside the internal guide track; an outer guide track is fixedly linked with the machine base; and the internal and external defect detecting robots are arranged on the internal guide track beam and the outer guide track through the moving pair respectively. The defectoscope has the advantages that the automatic ultrasonic defect detection is realized, and the problem of detection leak in manual defect detection is avoided.

Description

Downward horizontal rolling large-scale cylindrical section ultrasonic automatic flaw detection machine

technical field

The invention belongs to the technical field of ultrasonic automatic flaw detection equipment, and in particular relates to an ultrasonic automatic flaw detection machine for horizontal rolling large-scale cylindrical joints placed under the ground surface as a whole.

Background technique

Ultrasonic flaw detection can detect the internal defects of its volume without destroying the workpiece. It is a key technology for quality assurance in the manufacture of major national projects and various important civilian products. The main components of large-scale power generation equipment such as nuclear power and various large-scale pipelines, bridge components, large-scale workpieces in marine, aviation and other fields need to undergo ultrasonic flaw detection or other forms of non-destructive flaw detection to ensure the safe operation of the entire life of the equipment.

Ultrasonic automatic flaw detection has been applied in developed countries such as the United States, Japan, and Germany, but its key technical reference information is difficult to obtain. In China, ultrasonic automatic flaw detection of steel pipe welds is widely used. Utility model patent: "A Portal Crane Flaw Detector" (CN201653987U), which mainly performs automatic ultrasonic flaw detection for the weld seam of large spiral welded pipes. It cannot realize the full volume detection of the workpiece surface, and does not meet the requirements of other process regulations.

At present, most of the ultrasonic flaw detection commonly used in engineering production is manual operation, that is, the method of partitioning the workpiece surface, the operator holds the probe, and observes the oscilloscope with eyes. The evaluation is mainly based on personal technology and experience, and the detection effect and personal level are difficult to unify. The labor intensity of manual flaw detection workers is high, the time required for each workpiece flaw detection is long, and the production cycle is greatly extended. It has even become a bottleneck restricting the entire production chain of the enterprise, seriously affecting the production progress and production efficiency; Less, workers often work overtime, resulting in fatigue operation, and the detection process is prone to misjudgment, especially the physiological characteristics of the human body, such as attention, hand operation force, speed, and stability cannot last long, which affects the reliability of workpiece flaw detection to a certain extent sex and accuracy.

Contents of the invention

The purpose of the present invention is to provide a horizontal rolling large-scale automatic ultrasonic flaw detection machine for large-scale tubular parts hidden under the ground surface, through which automatic ultrasonic flaw detection can be realized to improve flaw detection productivity, shorten production cycle, and enhance reliability , improve the labor intensity of manual flaw detection, and avoid the missed detection of manual flaw detection.

The basic idea of the present invention is to drive the workpiece through the supporting roller to make it rotate around the axis. The inner and outer surfaces of the workpiece are respectively inspected by a robot. The robot can move along the linear guide rails parallel to the axis of the workpiece. The technical scheme adopted in the present invention is as follows:

The invention mainly includes a machine base, an inner flaw detection robot, an outer flaw detection robot, and a driving motor; there is an equipment installation cavity on the machine base, and two guide rail pillows are fixedly connected in parallel on one side of the bottom of the equipment installation cavity. The mobile pair is vertically connected with the active roller guide rail, and a pair of active idler rollers are installed on the active roller guide rail through the mobile pair. On the other side of the bottom of the equipment installation cavity, there is a pair of double The driven idler roller with adjustable lifting mechanism is provided with an inner guide rail inner support frame outside the active idler roller in the equipment installation cavity, and an inner guide rail outer support frame is provided outside the driven idler roller, and the inner guide rail inner support frame The center line of the guide groove on the top of the frame and the guide groove on the top of the outer support frame of the inner guide rail are on the same axis. There is an inner guide rail installation groove on the wall of the equipment installation cavity outside the driven roller, and the axis of the inner guide rail installation groove is aligned with the outer side. The center line of the guide groove of the support frame is located on the same elevation, and there is an auxiliary track fixedly connected inside the installation groove of the inner guide rail. There is an inner guide rail beam, the outer end of the inner guide rail beam is fixedly connected to the upper part of the track support trolley, the inner end is located in the guide groove of the outer support frame of the inner guide rail, and the outer end of the guide rail sleeper seat in the equipment installation cavity is fixedly connected to the inner guide rail beam. The inner flaw detection robot is placed on the inner guide rail beam through the moving pair, and the outer flaw detection robot is placed on the outer guide rail through the moving pair, and ultrasonic probes are installed at the ends of the inner and outer flaw detection robots.

The machine base of the flaw detector of the present invention is installed under the ground, and the workpiece is supported by a driving roller and a driven roller, wherein the driving roller can drive the workpiece to rotate, and two working rollers can be adjusted in the radial direction of the roller. position to adapt to flaw detection of workpieces with different diameters, and multiple stations are set in the axial direction to suit flaw detection of workpieces with different lengths. In addition, the driven idler roller can adjust the macroscopic support height of the driven end by using a double lifting mechanism, and can realize the width The precise adjustment of the direction displacement is suitable for the flaw detection of the transition barrel joint; the flaw detection is completed by two robots, the inner and the outer, and the ultrasonic probe is installed at the end of the robot, where the guide rail of the outer flaw detection robot is fixed, and the guide rail of the inner flaw detection robot is a mobile long beam The structure, including the support frame separated at both ends, the auxiliary track, and the track support trolley, are all placed below the ground. When working, the movable long beam is pulled out, passed through the inner hole of the workpiece, and placed on the support frame separated at both ends. The internal and external flaw detection robots can move to the designated position along the corresponding guide rails, and realize the expected flaw detection trajectory by using the rotation of the workpiece and the combined motion of the robot.

At present, my country has not yet established technical standards and specifications for automated ultrasonic flaw detection, and with the continuous development of production, automated ultrasonic flaw detection will be the only way in the field of ultrasonic flaw detection. The invention aims to improve production efficiency, improve working conditions, and improve product safety and quality, and has important technical value.

Compared with the prior art, the present invention has the following advantages: the main body of the flaw detector is located below the ground, which not only saves space above the ground, but also avoids collisions, and is convenient for hoisting workpieces; the structure is simple, the workbench is independent, easy to implement, and can adapt to larger The workpiece size changes within the range; the invention realizes automatic ultrasonic flaw detection, improves the productivity of flaw detection, shortens the production cycle, enhances the reliability of flaw detection, improves the labor intensity of manual flaw detection, and avoids missed inspections of manual flaw detection, etc. question.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a schematic structural view of the internal components of the machine base of the present invention;

Fig. 3 is a schematic diagram of the working state of the present invention when detecting flaws of straight cylindrical joint workpieces;

Fig. 4 is a schematic diagram of the working state of the internal components of the machine base of the present invention when detecting flaws on straight cylindrical joint workpieces;

Fig. 5 is a schematic diagram of the working state of the present invention when detecting flaws of the transition barrel joint workpiece;

Fig. 6 is a schematic diagram of the working state of the internal components of the machine base of the present invention when detecting flaws on the workpiece of the transition barrel section.

Detailed ways

The present invention will be further described in conjunction with the accompanying drawings and embodiments as follows. As shown in Figures 1 and 2, the composition of the horizontal rolling large-scale ultrasonic automatic flaw detection machine for cylindrical joints involved in the present invention includes an inner side support frame 1 of the inner guide rail, an outer support frame 2 of the inner guide rail, an inner flaw detection robot 3, an outer Flaw detection robot 4, inner guide rail beam 5, outer guide rail 6, active idler roller 7, active idler roller guide rail 8, guide rail pillow seat 9, drive motor 10, driven idler roller 11, auxiliary rail 12, outer end rail support trolley 13, Machine base 14. Wherein the machine base 14 is a high-rigidity welded structure platform with an equipment installation cavity on the machine base, and two rail sleepers 9 are parallel and fixedly connected to the bottom of the equipment installation cavity on the machine base 14 for supporting the active roller guide rail 8 . The active roller guide rail 8 is vertically connected with the two guide rail pillow seats 9 and is connected by a moving pair. The active roller guide rail 8 moves axially along the two guide rail pillow seats 9, and is positioned according to preset multiple stations to be suitable for flaw detection of workpieces with different lengths; The idler roller 7 is driven by the drive motor 10 to drive the workpiece to rotate. The active idler roller 7 is mounted on the active idler guide rail 8 through the moving pair, and can move along the active idler guide rail 8. The spacing between the idler rollers can be adjusted to adapt to flaw detection of workpieces with different diameters. The driving idler 7 and the driven idler 11 jointly support and position the workpiece of the cylinder section. The driven idler 11 adopts a double lifting mechanism to adjust the macro support height of the idler, and can realize the precise adjustment of the displacement between the rollers in the width direction, adapting to different tapers The transition cylinder section ensures the axial level of the transition cylinder section; the inside support frame 1 of the inner guide rail and the outside support frame 2 of the inner guide rail are fixedly connected to the machine base 14 respectively, and the inside support frame 1 of the inner guide rail is located outside the driving idler 7, The outer support frame 2 of the inner guide rail is located outside the driven roller 11; the inner guide rail beam 5 is jointly supported by the inner support frame 1 of the inner guide rail, the outer support frame 2 of the inner guide rail and the track support trolley 13 at the outer end, which are located in the same axis direction but separated , the track support trolley 13 of the outer end is fixedly connected with the outer end of the inner guide rail beam 5, and the track support trolley 13 and the auxiliary track 12 constitute the follow-up support of the inner guide rail beam 5 by rolling support. The inner guide rail beam 5 protrudes, passes through the inner hole of the workpiece, and is supported and positioned by the inner support frame 1 of the inner guide rail and the outer support frame 2 of the inner guide rail to ensure sufficient rigidity; when the inner guide rail beam 5 retracts, the inner guide rail beam 5 The outer support frame 2 supports the positioning and the track support trolley 13 supports the positioning; the outer guide rail 6 is fixedly connected with the machine base 14, and is connected with the inner guide rail beam 5 and the axially symmetrical middle plane determined by the driving idler roller 7 and the driven idler roller 11 parallel. The inner flaw detection robot 3 is placed on the inner guide rail beam 5 through a moving pair, and can move along the inner guide rail beam 5 , and the outer flaw detection robot 4 is placed on the outer guide rail 6 through a moving pair, and can move along the outer guide rail 6 . The main body of the flaw detector is located below the ground, and the space on the ground corresponding to the inner rail beam 5 is used for other purposes. Ultrasonic probes are installed at the ends of the inner and outer flaw detection robots, and the expected process trajectory of flaw detection is realized by means of the rotation of the workpiece, the movement of the robot along the guide rail and its own movement.

In the non-working state, the inner guide rail beam 5 shrinks to one side, and the outer flaw detection robot 4 moves to one end of the outer guide rail 6 to leave a space for the workpiece to be hoisted. The working state of the flaw detector is shown in Figures 3 to 6. After the workpiece is hoisted and settled on the idler roller, adjust the relative position of the active idler roller and the driven idler roller according to the actual size of the workpiece to ensure that the rotation axis of the workpiece is horizontal. After the rotation is stable, the inner guide rail beam 5 is stretched out to the inner side support frame 1 and fixed, the inner flaw detection robot 3 and the outer flaw detection robot 4 move to the designated position along the corresponding guide rails, adjust the relative position of the probe and the workpiece, and the active idler roller 7 Drive the workpiece to rotate, and at the same time, the inner and outer detection robots move, so that the probe can complete the flaw detection action requirements according to the set trajectory. After the flaw detection is completed, the inner rail beam 5 shrinks and returns to its original position, and the inner and outer flaw detection robots return to their original positions; the flaw detection is completed by manual review according to the records, and finally the workpiece is lifted out.

Claims (1)

1. A downward horizontal rolling large-scale ultrasonic automatic flaw detection machine for tubular parts, including a machine base, an inner flaw detection robot, an outer flaw detection robot, and a driving motor. There are two guide rail pillows in parallel on one side, and the active idler guide rails are vertically connected with the moving pair on the two guide rail sleepers, and a pair of active idler rollers are installed on the active idler guide rails through the moving pair. The other side of the bottom is installed on the axis parallel to the guide rail of the driving roller. A pair of driven rollers that can be adjusted by double lifting mechanisms are installed. In the equipment installation cavity, there is a support frame inside the inner guide rail and a driven roller on the outside of the driving roller. The outer side of the idler is provided with an outer support frame of the inner guide rail, and the center line of the guide groove at the top of the inner support frame of the inner guide rail and the guide groove at the top of the outer support frame of the inner guide rail are on the same axis. There is an inner guide rail installation groove on the wall, the axis of the inner guide rail installation groove and the center line of the outer support frame guide groove are located on the same elevation, and an auxiliary track is fixedly connected inside the inner guide rail installation groove, and the auxiliary rail is provided with rolling support. The track support trolley is provided with an inner guide rail beam between the upper part of the track support trolley and the guide groove of the outer support frame of the inner guide rail. The outer end of the inner guide rail beam is fixedly connected with the upper part of the track support trolley, and the inner end is located in the guide groove of the outer support frame of the inner guide rail. The outer guide rail parallel to the inner guide rail beam is fixedly connected to the outer side of the guide rail pillow seat in the equipment installation cavity. The inner flaw detection robot is placed on the inner guide rail beam through the moving pair, and the outer flaw detection robot is placed on the outer guide rail through the moving pair. Ultrasonic probes are installed at the end of the flaw detection robot.

Images