Steel pipe welding seam detection device

Abstract

The invention provides a steel pipe welding seam detection device, which is characterized in that a rack is connected to a fixed position through a first linear driving assembly, a support roller is arranged below the rack, the support roller is used for supporting a to-be-detected straight welded pipe, two sides of the rack are respectively provided with a compression roller, the periphery of each compression roller can be connected to the periphery of the straight welded pipe in a rolling manner, and the longitudinal welded pipe is fixed on the rack. And the two pressing rollers are used for pressing the to-be-detected section of the longitudinal welded pipe. According to the steel pipe welding seam detection device, the supporting rollers and the limiting rollers are used for pressing the periphery of the to-be-detected section of the linear steel pipe, the situation that the detection quality is affected due to the fact that the straight welded pipe shakes below the detection assembly is prevented, the detection assembly limits the relative position of the straight welded pipe and the detection assembly through the limiting rollers, and the limiting rollers can float along with the periphery of the straight welded pipe; therefore, the execution end of the detection assembly is driven to always keep the same detection position as the linear welding seam, the stability of detection data is guaranteed, the detection data and the detection quality are prevented from being influenced when the outer diameters of the longitudinal welded pipes are not uniform, and the detection precision is improved.

Description

Technical Field

[0001] The invention belongs to the field of steel pipe weld detection, and in particular relates to a steel pipe weld detection device. Background Art

[0002] A straight seam welded pipe is an open steel pipe made by rolling cold-rolled steel sheet or strip and then straight-seam welding it on welding equipment. Existing straight seam welded pipes primarily use a JCO forming machine to form a "J" shape through multiple step-by-step stamping of the steel strip. The other half of the steel sheet is then bent and pressed into a "C" shape, ultimately forming an open "O" shape. The opening is then welded continuously through a welding machine. After welding, the inner and outer scars of the weld are trimmed to achieve the final shape. Currently, pipeline weld inspections are performed manually by using an ultrasonic probe to locate a point on the weld surface of the pipe. The location and size of the defect are determined by the pulse waveform of the ultrasonic detector. If the ultrasonic detector is fixed in a fixed position, the outer diameter of the straight seam welded pipe after rolling is completed will deviate, and the inspection component will not be able to adjust with the outer ring of the steel pipe, affecting the inspection quality. Summary of the Invention

[0003] In view of this, the present invention aims to propose a steel pipe weld detection device to solve the problem in the prior art that after the straight seam welded pipe is rolled and welded, its outer diameter has deviation, and the detection component cannot change with the change of the outer ring of the steel pipe, which affects the detection quality.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows: A steel pipe weld detection device includes a first linear drive component, a detection component, a support roller, a pressure roller, a marking component and a limit roller respectively arranged on a frame, the frame is connected to a fixed position through the first linear drive component, and a support roller is arranged under the frame, the support roller is used to support a straight seam welded pipe to be detected, and the straight seam welded pipe slides in a straight line on the support roller, a pressure roller is respectively arranged on both sides of the frame, the periphery of each pressure roller can be rolled to be connected to the periphery of the straight seam welded pipe, and the two pressure rollers are used to press the straight seam welded pipe to be detected section, a support roller is respectively arranged under each pressure roller, the detection component is used to detect the weld of the straight seam welded pipe, and a limit roller is respectively arranged on both sides of the detection component, the limit roller is used to limit the relative position of the execution end of the detection component and the straight seam welded pipe, the execution end of the marking component faces the straight seam welded pipe, and the marking component is used to mark the quality status on the periphery of the straight seam welded pipe.

[0005] Furthermore, the first drive assembly includes a first linear drive component, the periphery of the first linear drive component is fixedly installed in a fixed position, the movable end of the first linear drive component is fixedly installed with a first sliding sleeve, a first sliding rod is slidably connected in the first sliding sleeve, a first end of the first sliding rod is fixedly connected to the frame, a limiting ring is provided on the inner ring of the first sliding sleeve, a limiting boss is installed on the periphery of the first sliding rod, and the outer diameter of the limiting boss is smaller than the inner ring of the limiting ring; Furthermore, a compression spring is installed at the second end of the first sliding sleeve, and one end of the compression spring is elastically connected to the first sliding sleeve; Furthermore, a mounting groove is provided at the second end of the first slide rod, in which a first touch switch is installed, and one end of the first touch switch is connected to the bottom of the mounting groove through a reset spring, and the execution end of the first touch switch can contact the top of the inner ring of the first sleeve.

[0006] Furthermore, the middle portion of each pressing roller is rotatably connected to one end of a seesaw, the middle portion of the seesaw is rotatably connected to the frame, the other end of the seesaw is rotatably connected to the movable end of the second linear drive component, and the outer periphery of the second linear drive component is rotatably connected to the frame; Furthermore, a first limiting groove is provided on the periphery of the supporting roller, and the cross section of the first limiting groove is an arc-shaped structure.

[0007] Furthermore, the frame includes an upper plate, a first lead screw and a second slide bar, the upper ends of the upper plate are respectively provided with a first driving assembly and a pressure roller, the outer periphery of the first lead screw is rotatably connected to the first support plate, the outer periphery of the second slide bar is fixedly sleeved on the second support plate, the second support plates of the first support plate are respectively fixedly connected to the lower ends of the upper plate, the outer periphery of the first lead screw is threadedly connected to the third support plate, the outer periphery of the second slide bar is slidably connected to the fourth support plate, the third support plate and the fourth support plate are respectively fixedly mounted to the upper ends of the lower plate, the lower end of the lower plate is mounted with a detection assembly, one end of the first lead screw is mounted with a driving motor, and the driving motor is mounted on the first support plate; Furthermore, a weld alignment probe is provided on the lower plate, and the weld alignment probe is located in the middle of the lower plate.

[0008] Furthermore, the upper ends of the third support plate and the fourth support plate are respectively fixedly connected to the connecting plate, and a sliding hole is respectively provided at both ends of the connecting plate, the limiting roller is rotatably connected to the lower end of the third slide rod, the outer periphery of the third slide rod is slidably connected to a sliding hole, and a fifth support plate is provided at the upper end of the third slide rod, the outer diameter of the fifth support plate is larger than the inner diameter of the sliding hole, the threaded connection of the third slide rod is a limiting nut, and the upper end of the limiting nut can abut against the lower end of the upper plate; Furthermore, a second touch switch is provided on the connecting plate, and the lower end of the fifth support plate can abut against the execution end of the second touch switch; Furthermore, a first spring is provided on the periphery of the third sliding rod, and two ends of the first spring are fixedly connected to the lower end of the connecting plate and the periphery of the third sliding rod respectively.

[0009] Furthermore, the marking assembly includes an L-shaped bracket, and the bracket is fixedly mounted on the connecting plate, one end of the bracket is provided with a slide groove, and the slide groove is a through groove, a screw is provided in the slide groove, and the outer periphery of the screw is threadedly connected to the abutment nut, and an abutment nut is provided on each side of the bracket, and a marking head is installed at one end of the screw; Furthermore, the marking head is a inkjet head or a laser head.

[0010] Furthermore, a spray head for spraying a coupling agent is provided on the lower plate, and the coupling agent is water.

[0011] Furthermore, the detection assembly includes a third linear drive component, the third linear drive component is fixedly mounted on the lower plate, and a mounting plate is provided at the movable end of the third linear drive component, and the mounting plate is used to mount the ultrasonic detection probe; Furthermore, a sixth support plate is provided at the middle portion of the upper end of the mounting plate, an ultrasonic detection probe is installed at the lower end of the mounting plate, the lower end of the connecting shaft is hinged to the sixth support plate through a pin shaft, the upper end of the connecting shaft is fixedly connected to the fixed plate, and the fixed plate is fixedly mounted to the movable end of the third linear drive component; Furthermore, a second spring is provided on one side of the sixth support plate, and two ends of the second spring are fixedly connected to the lower end of the fixing plate and the upper end of the mounting plate respectively; Furthermore, a fourth linear drive component is provided between the fixed plate and the mounting plate, both ends of the fourth linear drive component are hinged to the sixth support plate and the mounting plate respectively, and the fourth linear drive component and the second spring are respectively located on both sides of the sixth support plate.

[0012] Furthermore, at least two detection components are provided on one side of the weld of the straight seam welded pipe, and the two detection components are provided along the traveling direction of the straight seam welded pipe.

[0013] Compared with the prior art, the steel pipe weld detection device described in the present invention has the following beneficial effects: (1) In the steel pipe weld inspection device described in the present invention, the support roller and the limit roller are used to press the periphery of the straight steel pipe to be inspected to prevent the straight seam welded pipe from shaking under the inspection component and affecting the inspection quality. The inspection component is limited in its relative position to the straight weld by the limit roller, and the limit roller can float with the periphery of the straight seam welded pipe, thereby driving the execution end of the inspection component to always maintain the same inspection position as the straight welded pipe, ensuring the stability of the inspection data, preventing the non-uniform outer diameter of the straight seam welded pipe from affecting the inspection data and the inspection quality, and improving the inspection accuracy.

[0014] (2) In the steel pipe weld detection device described in the present invention, the first slide bar slides in the first sleeve, which is a floating structure of the frame relative to the straight seam welded pipe. When the first linear drive component drives the frame close to the straight seam welded pipe, the limiting roller first contacts the outer periphery of the straight seam welded pipe, thereby driving the frame and the first slide bar to slide relative to the first sleeve, so as to avoid damage to components or products caused by the first linear drive component forcibly driving the frame and the limiting roller to abut against the outer periphery of the straight seam welded pipe. This can reduce the selection requirements of the first linear drive component, reduce the cost of use, and increase the service life of parts.

[0015] (3) In the steel pipe weld detection device described in the present invention, the outer diameter of the limiting boss is smaller than the inner ring of the limiting ring, and the cooperation between the limiting boss and the limiting ring is used to prevent the first sliding sleeve from being separated from the first sliding rod.

[0016] (4) In the steel pipe weld detection device described in the present invention, one end of the compression spring is elastically connected to the first sliding sleeve, and the compression spring is used to provide elastic force for the first sliding rod to slide downward, thereby preventing the first sliding rod from getting stuck in the first sliding sleeve, so that the frame and the limiting roller can move into place.

[0017] (5) In the steel pipe weld detection device described in the present invention, the first touch switch is a detection switch for the frame to move into position. When the first touch switch contacts the top of the inner ring of the first sleeve, it represents that the first linear drive component has moved into position, and the first linear drive component stops driving the frame to move downward, and the first linear drive component drives the frame to retreat a set distance, releasing the first touch switch from contacting the top of the inner ring of the first sleeve, and the reset spring is used to prevent the actuator end of the first touch switch from hard contact with the top of the inner ring of the first sleeve, thereby preventing damage to the parts and improving the service life of the parts.

[0018] (6) In the steel pipe weld detection device described in the present invention, the first limiting groove of the arc structure is used for use with straight seam welded pipes of different specifications, and the second linear driving component can press the pressing roller to the periphery of the straight seam welded pipe through the rocker plate, so as to limit the relative position of the straight seam welded pipe and prevent the straight seam welded pipe from moving.

[0019] (7) The present invention relates to a steel pipe weld detection device, wherein the weld alignment probe is used to detect the position of the linear weld. The drive motor drives the first lead screw to rotate, which can drive the lower plate and the photoelectric sensor to move horizontally. When the photoelectric sensor detects the linear weld, the drive motor stops rotating. At this time, the detection component is located on one side of the linear weld, and the outer periphery of the limit roller contacts the linear weld, so that the detection component and the limit roller move into place.

[0020] (8) The present invention relates to a steel pipe weld detection device. When the frame moves downward, the limit roller first abuts against the straight seam weld pipe, and as the frame continues to move downward, the third slide bar slides axially along the slide hole until the limit nut abuts against the upper plate. At this time, the upper plate drives the first slide bar to slide along the first sleeve, and the first touch switch on the first slide bar tends to the first sleeve. When the outer diameter of the straight seam weld pipe gradually decreases, the limit boss and the limit ring gradually contact each other. As the outer diameter of the straight seam weld pipe further decreases, the first spring drives the limit roller and the third slide bar to slide axially downward, so that the limit roller is always tightly attached to the straight seam weld pipe. When the fifth support plate contacts the second touch switch, the limit roller moves to the extreme position. At this time, the first drive component is required to drive the frame downward to adapt to the outer diameter of the straight seam weld pipe. The above movement can avoid the detection deviation caused by the floating outer diameter of the straight seam weld pipe, and can also be used for self-adaptation of the detection component when changing the outer diameter specification of the straight seam weld pipe, reducing the debugging operation of the staff and reducing the parking time.

[0021] (9) In the steel pipe weld detection device described in the present invention, the detection end of the ultrasonic detection probe is a plane, the straight seam welded pipe is a round pipe, and the tangent line of the outer periphery of the round pipe relative to the plane is the detection surface of the ultrasonic detection probe. The fourth linear drive component drives the mounting plate to tilt relative to the fixed plate, and can adjust the above-mentioned detection surface so that the detection position of the linear weld can be adjusted to meet production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic structural diagram of a steel pipe weld detection device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the front view of a steel pipe weld detection device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a side view of a steel pipe weld detection device according to an embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of a steel pipe weld detection device according to an embodiment of the present invention; Figure 5 for Figure 4 A partial enlarged view of middle A; Figure 6 This is a schematic diagram of the rack structure according to an embodiment of the present invention; Figure 7 A schematic side view of a rack according to an embodiment of the present invention; Figure 8 This is a schematic structural diagram of a detection component according to an embodiment of the present invention; Figure 9 A schematic side view of the detection assembly according to an embodiment of the present invention; Figure 10 This is a schematic structural diagram of a pressure roller according to an embodiment of the present invention; Figure 11 This is a schematic structural diagram of the marking assembly according to an embodiment of the present invention.

[0023] Description of reference numerals: 1-Frame; 11-Upper plate; 12-First lead screw; 13-Second slide bar; 14-First support plate; 15-Second support plate; 16-Third support plate; 17-Fourth support plate; 18-Lower plate; 19-Drive motor; 110-Weld alignment probe; 111-Connecting plate; 112-Second touch switch; 113-Spray head; 2-First drive assembly; 21-First linear drive component; 22-First sliding sleeve; 23-First slide bar; 24-Limiting ring; 25-Compression spring; 26-First touch switch; 27-Reset spring; 3-Detection component; 31-Third linear drive component; 32-Mounting plate; 33-Sixth support plate; 34-Connecting shaft; 35-Fixed plate; 36-Second spring; 37-Fourth linear drive component; 4-Straight seam welded pipe; 41-Linear weld; 5-Support roller; 6-Pressure roller; 61-Rocker; 62-Second linear drive component; 7-Marking component; 71-Bracket; 72-Slide; 73-Screw; 74-Abutment nut; 75-Marking head; 8-Limiting roller; 81-Third slide; 82-Fifth support plate; 83-Limiting nut. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0028] like Figures 1-11 As shown, a steel pipe weld detection device includes a first linear drive component, a detection component 3, a support roller 5, a pressure roller 6, a marking component 7 and a limit roller 8 respectively arranged on a frame 1, the frame 1 is connected to the downstream of the steel pipe welder through the first linear drive component, and the straight seam welded pipe 4 is linearly moved by the front-end power component and the rear-end power component, a support roller 5 is arranged under the frame 1, the support roller 5 is used to support the straight seam welded pipe 4 to be detected, and there are multiple support rollers 5, the periphery of the straight seam welded pipe 4 is rollingly connected to the periphery of each support roller 5, the straight seam welded pipe 4 moves in a straight line on the support roller 5, a pressure roller 6 is respectively arranged on both sides of the frame 1, the periphery of each pressure roller 6 can be rollingly connected to the periphery of the straight seam welded pipe 4, and the two pressure rollers 6 are used to press the straight seam welded pipe 4 to be detected, and a support roller 5 is correspondingly arranged under each pressure roller 6. Component 3 is used to detect the weld of the straight seam welded pipe 4, and a limiting roller 8 is set on both sides of the detection component 3. The limiting roller 8 is used to limit the relative position of the execution end of the detection component 3 and the straight seam welded pipe 4. The execution end of the marking component 7 faces the straight seam welded pipe 4, and the marking component 7 is used to mark the quality status on the periphery of the straight seam welded pipe 4. The support roller 5 and the limiting roller 8 are used to press the periphery of the straight seam welded pipe to be detected to prevent the straight seam welded pipe 4 from shaking under the detection component 3 and affecting the detection quality. The detection component 3 limits the relative position with the straight seam weld 41 through the limiting roller 8, and the limiting roller 8 can float with the periphery of the straight seam welded pipe 4, thereby driving the execution end of the detection component 3 to always maintain the same detection position as the straight seam weld 41, ensuring the stability of the detection data, preventing the straight seam welded pipe 4 from affecting the detection data when the outer diameter is not uniform, affecting the detection quality, and improving the detection accuracy.

[0029] The first drive assembly 2 includes a first linear drive component 21, which is a linear motor, linear cylinder or linear hydraulic cylinder in the prior art. The periphery of the first linear drive component 21 is fixedly installed in a fixed position, and the movable end of the first linear drive component 21 is fixedly installed with a first sleeve 22, and the first slide rod 23 is slidably connected inside the first sleeve 22. The first end of the first slide rod 23 is fixedly connected to the frame 1, and a limiting ring 24 is provided on the inner ring of the first sleeve 22. A limiting boss is installed on the periphery of the first slide rod 23, and the outer diameter of the limiting boss is smaller than the inner ring of the limiting ring 24. The cooperation between the limiting boss and the limiting ring 24 is It is used to prevent the first sliding sleeve 22 from disengaging from the first sliding rod 23. The sliding of the first sliding rod 23 in the first sliding sleeve 22 is a floating structure of the frame 1 relative to the straight seam welded pipe 4. When the first linear drive component 21 drives the frame 1 close to the straight seam welded pipe 4, the limiting roller 8 first contacts the periphery of the straight seam welded pipe 4, thereby driving the frame 1 and the first sliding rod 23 to slide relative to the first sliding sleeve 22, so as to avoid damage to components or products caused by the first linear drive component 21 forcibly driving the frame 1 and the limiting roller 8 to abut against the periphery of the straight seam welded pipe 4. This can reduce the selection requirements of the first linear drive component 21, reduce the cost of use, and increase the service life of parts.

[0030] A compression spring 25 is installed at the second end of the first sliding sleeve 22, and one end of the compression spring 25 is elastically connected to the first sliding sleeve 22. The compression spring 25 is used to provide elastic force for the first sliding rod 23 to slide downward, preventing the first sliding rod 23 from getting stuck in the first sliding sleeve 22, so that the frame 1 and the limiting roller 8 can move into place.

[0031] The second end of the first slide bar 23 is provided with a mounting groove, in which a first touch switch 26 is mounted, and one end of the first touch switch 26 is connected to the bottom of the mounting groove by a return spring 27, and the execution end of the first touch switch 26 can contact the top of the inner ring of the first slide sleeve 22. The first touch switch 26 is a micro-touch switch in the prior art. The first touch switch 26 is a detection switch for the movement of the frame 1 into position. When the first touch switch 26 contacts the top of the inner ring of the first slide sleeve 22, it represents that the first linear drive component 21 has moved into position, and the first linear drive component 21 stops driving the frame 1 to move downward, and the first linear drive component 21 drives the frame 1 to retreat a set distance, releasing the first touch switch 26 from contacting the top of the inner ring of the first slide sleeve 22, and the return spring 27 is used to prevent the execution end of the first touch switch 26 from hard contact with the top of the inner ring of the first slide sleeve 22, causing damage to parts, so as to improve the service life of parts.

[0032] The middle part of each pressing roller 6 is rotatably connected to one end of the seesaw 61, the middle part of the seesaw 61 is rotatably connected to the frame 1, and the other end of the seesaw 61 is rotatably connected to the movable end of the second linear drive component 62. The second linear drive component 62 is a linear motor in the prior art, and the periphery of the second linear drive component 62 is rotatably connected to the frame 1; a first limiting groove is provided on the periphery of the support roller 5, and the cross-section of the first limiting groove is an arc-shaped structure. The first limiting groove of the arc-shaped structure is used for use with straight seam welded pipes 4 of different specifications, and the second linear drive component 62 can press the pressing roller 6 to the periphery of the straight seam welded pipe 4 through the seesaw 61, so as to limit the relative position of the straight seam welded pipe 4 and prevent the straight seam welded pipe 4 from moving.

[0033] The frame 1 includes an upper plate 11, a first lead screw 12 and a second slide rod 13. The upper end of the upper plate 11 is respectively provided with a first drive assembly 2 and a pressure roller 6. The outer periphery of the first lead screw 12 is rotatably connected to the first support plate 14. The outer periphery of the second slide rod 13 is fixedly sleeved on the second support plate 15. The second support plates 15 of the first support plate 14 are respectively fixedly connected to the lower end of the upper plate 11. The outer periphery of the first lead screw 12 is threadedly connected to the third support plate 16. The outer periphery of the second slide rod 13 is slidably connected to the fourth support plate 17. The third support plate 16 and the fourth support plate 17 are respectively fixedly mounted to the upper end of the lower plate 18. The detection assembly 3 is installed at the lower end of the lower plate 18. One end of the first lead screw 12 is installed with a drive motor 1 9. The drive motor 19 is installed on the first support plate 14; a weld alignment probe 110 is set on the lower plate 18, and the weld alignment probe 110 is located in the middle of the lower plate 18. The weld alignment probe 110 is a photoelectric sensor of the prior art. The photoelectric sensor is used to detect the position of the linear weld 41. The drive motor 19 drives the first screw 12 to rotate, which can drive the lower plate 18 and the photoelectric sensor to move horizontally. When the photoelectric sensor detects the linear weld 41, the drive motor 19 stops rotating. At this time, the detection component 3 is located on one side of the linear weld 41, and the outer periphery of the limiting roller 8 contacts the linear weld 41, so that the detection component 3 and the limiting roller 8 can move into place.

[0034] The upper ends of the third support plate 16 and the fourth support plate 17 are respectively fixedly connected to the connecting plate 111, and the two ends of the connecting plate 111 are respectively provided with a sliding hole, the limiting roller 8 is rotatably connected to the lower end of the third slide bar 81, and the outer periphery of the third slide bar 81 is slidably connected to a sliding hole, the upper end of the third slide bar 81 is provided with a fifth support plate 82, the outer diameter of the fifth support plate 82 is larger than the inner diameter of the sliding hole, and the threaded connection limiting nut 83 of the third slide bar 81 is able to abut against the lower end of the upper plate 11; a second touch switch 112 is provided on the connecting plate 111, and the lower end of the fifth support plate 82 can abut against the execution end of the second touch switch 112; a first spring is provided on the periphery of the third slide bar 81, and the two ends of the first spring are respectively fixedly connected to the lower end of the connecting plate 111 and the periphery of the third slide bar 81. When the frame 1 moves downward, the limiting roller 8 first abuts against the straight seam welded pipe 4, and as the frame 1 continues to move downward, the third slide bar 81 slides along The hole slides axially until the limit nut 83 abuts against the upper plate 11. At this time, the upper plate 11 drives the first slide bar 23 to slide along the first sleeve 22, and the first touch switch 26 on the first slide bar 23 tends to the first sleeve 22. When the outer diameter of the straight seam welded pipe 4 gradually decreases, the limit boss and the limit ring 24 gradually contact each other. As the outer diameter of the straight seam welded pipe 4 further decreases, the first spring drives the limit roller 8 and the third slide bar 81 to slide axially downward, so that the limit roller 8 is always close to the straight seam welded pipe 4. When the fifth support plate 82 contacts the second touch switch 112, the limit roller 8 moves to the extreme position. At this time, the first drive assembly 2 is required to drive the frame 1 to move downward to adapt to the outer diameter of the straight seam welded pipe 4. The above movement can avoid the detection deviation caused by the floating outer diameter of the straight seam welded pipe 4, and can also be used as the self-adaptation of the detection assembly 3 when changing the outer diameter specification of the straight seam welded pipe 4, reducing the debugging operation of the staff and reducing the parking time.

[0035] The marking assembly 7 includes an L-shaped bracket 71, and the bracket 71 is fixedly mounted on the connecting plate 111. A slide groove 72 is provided at one end of the bracket 71, and the slide groove 72 is a through groove. A screw rod 73 is provided in the slide groove 72, and the outer periphery of the screw rod 73 is threadedly connected to the abutment nut 74, and an abutment nut 74 is provided on both sides of the bracket 71. A marking head 75 is installed at one end of the screw 73. The marking head 75 is any one of the spray terminal or laser head in the existing technology. The staff assembles it by themselves according to on-site requirements. When there is a problem with the quality of the inspection section, the marking head sprays the code or laser marks the inspection section. The screw 73 slides in the slide groove 72, and the abutment nut 74 adjusts the relative position of the marking head 75 and the bracket 71, which can adjust the relative position of the spray terminal relative to the straight seam welded pipe 4 to meet different production requirements.

[0036] A spray head 113 for spraying coupling agent is provided on the lower plate 18, and the coupling agent in this embodiment is water. The detection assembly 3 includes a third linear drive component 31, which is a linear motor in the prior art. The third linear drive component 31 is fixedly mounted on the lower plate 18, and a mounting plate 32 is provided at the movable end of the third linear drive component 31. The mounting plate 32 is used to install an ultrasonic detection probe. The third linear drive component 31 drives the ultrasonic detection probe to approach or move away from the straight seam welded pipe 4 through the mounting plate 32. A sixth support plate 33 is provided at the middle of the upper end of the mounting plate 32, and an ultrasonic detection probe is installed at the lower end of the mounting plate 32. The ultrasonic detection probe is a prior art. The lower end of the connecting shaft 34 is hinged to the sixth support plate 33 through a pin shaft, and the upper end of the connecting shaft 34 is fixedly connected to the fixed plate 35. The fixed plate 35 is fixedly mounted to the movable end of the third linear drive component 31, and a fourth linear drive component 37 is provided between the fixed plate 35 and the mounting plate 32. The two ends of the fourth linear drive component 37 are respectively hinged to the sixth support plate 33 and the mounting plate 32, and the fourth linear drive component 37 and the second spring 36 are respectively located on both sides of the sixth support plate 33. The detection end of the ultrasonic detection probe is a plane, the straight seam welded pipe 4 is a round pipe, and the tangent line of the outer periphery of the round pipe relative to the plane is the detection surface of the ultrasonic detection probe. The fourth linear drive component 37 drives the mounting plate 32 to tilt relative to the fixed plate 35, and can adjust the above-mentioned detection surface so that the detection position of the linear weld 41 can be adjusted. In order to reduce the wear on the detection surface, the detection surface can be kept away from the outer surface of the straight seam welded pipe 4. It is actually set according to the detection requirements of the ultrasonic detection probe. A second spring 36 is provided on one side of the sixth support plate 33, and the two ends of the second spring 36 are respectively fixedly connected to the lower end of the fixed plate 35 and the upper end of the mounting plate 32. The second spring 36 is used to elastically pull the relative position of the mounting plate 32 to prevent the relative position of the mounting plate 32 from changing.

[0037] And when implementing, if Figure 1 As shown, at least two detection components 3 are set on one side of the weld of the straight seam welded pipe 4, and the two detection components 3 are set along the moving direction of the straight seam welded pipe 4. The two detection components 3 have different detection surfaces for the straight seam welded pipe 4, so as to improve the detection quality of the straight seam welded pipe 4.

[0038] The control method of this embodiment is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. This article is mainly used to protect mechanical devices. The control method and circuit connection are not explained in detail in this article.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel pipe weld detection device, characterized in that: The invention comprises a first linear drive component, a detection component (3), a support roller (5), a pressure roller (6), a marking component (7) and a limit roller (8) respectively arranged on a frame (1); the frame (1) is connected to a fixed position through the first linear drive component, and a support roller (5) is arranged below the frame (1); the support roller (5) is used to support a straight seam welded pipe (4) to be detected, and the straight seam welded pipe (4) slides along a straight line on the support roller (5); a pressure roller (6) is respectively arranged on both sides of the frame (1), and the outer periphery of each pressure roller (6) can be rolled and connected to the straight seam welded pipe (4). The outer periphery of the welded pipe (4) is provided with two pressing rollers (6) for pressing the section of the straight welded pipe (4) to be inspected, a supporting roller (5) is arranged below each pressing roller (6), the inspection component (3) is used to inspect the weld of the straight welded pipe (4), and a limiting roller (8) is arranged on both sides of the inspection component (3), the limiting roller (8) is used to limit the relative position between the execution end of the inspection component (3) and the straight welded pipe (4), the execution end of the marking component (7) faces the straight welded pipe (4), and the marking component (7) is used to mark the quality status on the outer periphery of the straight welded pipe (4).

2. A steel pipe weld detection device according to claim 1, characterized in that: The first drive assembly (2) comprises a first linear drive component (21), the periphery of the first linear drive component (21) is fixedly mounted at a fixed position, a first sliding sleeve (22) is fixedly mounted on the movable end of the first linear drive component (21), a first sliding rod (23) is slidably connected inside the first sliding sleeve (22), a first end of the first sliding rod (23) is fixedly connected to the frame (1), a limiting ring platform (24) is arranged on the inner ring of the first sliding sleeve (22), a limiting boss is installed on the periphery of the first sliding rod (23), and the outer diameter of the limiting boss is smaller than the inner ring of the limiting ring platform (24); A compression spring (25) is installed at the second end of the first sliding sleeve (22), and one end of the compression spring (25) is elastically connected to the first sliding sleeve (22); The second end of the first slide bar (23) is provided with a mounting groove, in which a first touch switch (26) is mounted, and one end of the first touch switch (26) is connected to the bottom of the mounting groove via a return spring (27), and the execution end of the first touch switch (26) can contact the top of the inner ring of the first slide sleeve (22).

3. A steel pipe weld detection device according to claim 1, characterized in that: The middle part of each pressing roller (6) is rotatably connected to one end of a seesaw (61), the middle part of the seesaw (61) is rotatably connected to the frame (1), the other end of the seesaw (61) is rotatably connected to the movable end of a second linear drive component (62), and the outer periphery of the second linear drive component (62) is rotatably connected to the frame (1); A first limiting groove is provided on the periphery of the supporting roller (5), and the cross section of the first limiting groove is an arc-shaped structure.

4. A steel pipe weld detection device according to claim 1, characterized in that: The frame (1) comprises an upper plate (11), a first lead screw (12) and a second slide bar (13); a first driving assembly (2) and a pressing roller (6) are respectively arranged at the upper end of the upper plate (11); the outer periphery of the first lead screw (12) is rotatably connected to the first support plate (14); the outer periphery of the second slide bar (13) is fixedly sleeved on the second support plate (15); the second support plate (15) of the first support plate (14) is respectively fixedly connected to the lower end of the upper plate (11); the outer periphery of the first lead screw (12) is threadedly connected to the third support plate (16); the outer periphery of the second slide bar (13) is slidably connected to the fourth support plate (17); the third support plate (16) and the fourth support plate (17) are respectively fixedly installed to the upper end of the lower plate (18); the lower end of the lower plate (18) is installed with a detection assembly (3); one end of the first lead screw (12) is installed with a driving motor (19); and the driving motor (19) is installed on the first support plate (14); A weld alignment probe (110) is arranged on the lower plate (18), and the weld alignment probe (110) is located in the middle of the lower plate (18).

5. A steel pipe weld detection device according to claim 4, characterized in that: The upper ends of the third support plate (16) and the fourth support plate (17) are respectively fixedly connected to the connecting plate (111), and a sliding hole is respectively provided at both ends of the connecting plate (111), the limiting roller (8) is rotatably connected to the lower end of the third sliding rod (81), the outer periphery of the third sliding rod (81) is slidably connected to a sliding hole, the upper end of the third sliding rod (81) is provided with a fifth support plate (82), the outer diameter of the fifth support plate (82) is larger than the inner diameter of the sliding hole, the third sliding rod (81) is threadedly connected to a limiting nut (83), and the upper end of the limiting nut (83) can abut against the lower end of the upper plate (11); A second touch switch (112) is arranged on the connecting plate (111), and the lower end of the fifth supporting plate (82) can abut against the execution end of the second touch switch (112); A first spring is arranged on the periphery of the third sliding rod (81), and two ends of the first spring are respectively fixedly connected to the lower end of the connecting plate (111) and the periphery of the third sliding rod (81).

6. A steel pipe weld detection device according to claim 5, characterized in that: The marking assembly (7) comprises a bracket (71) of an L-shaped structure, and the bracket (71) is fixedly mounted on the connecting plate (111), one end of the bracket (71) is provided with a slide groove (72), and the slide groove (72) is a through groove, a screw rod (73) is arranged in the slide groove (72), and the outer periphery of the screw rod (73) is threadedly connected to an abutment nut (74), and an abutment nut (74) is respectively arranged on both sides of the bracket (71), and a marking head (75) is installed at one end of the screw rod (73); the marking head (75) is a spray head or a laser head.

7. A steel pipe weld detection device according to claim 4, characterized in that: A spray head (113) for spraying a coupling agent is arranged on the lower plate (18), and the coupling agent is water.

8. A steel pipe weld detection device according to claim 1, characterized in that: The detection assembly (3) comprises a third linear drive component (31), the third linear drive component (31) is fixedly mounted on the lower plate (18), a mounting plate (32) is provided at the movable end of the third linear drive component (31), and the mounting plate (32) is used to mount an ultrasonic detection probe; A sixth support plate (33) is arranged at the middle of the upper end of the mounting plate (32), an ultrasonic detection probe is installed at the lower end of the mounting plate (32), the lower end of the connecting shaft (34) is hinged to the sixth support plate (33) through a pin shaft, the upper end of the connecting shaft (34) is fixedly connected to the fixing plate (35), and the fixing plate (35) is fixedly installed to the movable end of the third linear drive component (31).

9. A steel pipe weld detection device according to claim 8, characterized in that: A second spring (36) is disposed on one side of the sixth support plate (33), and two ends of the second spring (36) are respectively fixedly connected to the lower end of the fixing plate (35) and the upper end of the mounting plate (32); A fourth linear drive component (37) is arranged between the fixed plate (35) and the mounting plate (32), two ends of the fourth linear drive component (37) are respectively hinged to the sixth support plate (33) and the mounting plate (32), and the fourth linear drive component (37) and the second spring (36) are respectively located on both sides of the sixth support plate (33).

10. A steel pipe weld detection device according to claim 1, characterized in that: At least two detection components (3) are arranged on one side of the weld of the straight seam welded pipe (4), and the two detection components (3) are arranged along the moving direction of the straight seam welded pipe (4).

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