Mechanical tracking device for welding seam in spiral welding pipe

Abstract

The utility model relates to a mechanical tracking device for a welding seam in a spiral welded pipe, which belongs to the technical field of welding devices and comprises a bottom plate, a depended wheel component and a cylinder are arranged on the bottom plate in a sliding manner, the cylinder is connected with the depended wheel component and can enable the depended wheel component to always abut against the side edge of a steel plate delivery edge, and an electronic ruler component is further mounted on the bottom plate. The electronic ruler assembly can measure the displacement of the depended wheel and send a signal to the inner welding tracking motor; the position of a welding gun is adjusted in real time by measuring the displacement of the side edge of a steel plate delivery edge, so that automatic tracking of a welding seam is realized; the device is installed outside the spiral welding pipe, is not limited by the internal space of the steel pipe, is suitable for tracking the internal welding seam of any pipe diameter, and is simple in structure, convenient to install and good in stability.

Description

Technical Field

[0001] The utility model relates to a mechanical tracking device for the inner weld of a spiral welded pipe, belonging to the technical field of welding devices. Background Art

[0002] In the process of welding spiral seam submerged arc welded steel pipes, in order to improve the quality of welds and reduce the labor intensity of workers, most pipe factories have installed weld seam laser automatic tracking devices, which effectively improve the quality of welds and greatly reduce the labor intensity of workers. The laser automatic tracking device has no problem in external welding of steel pipes, but in tracking the welds inside steel pipes, due to the limitation of the internal space of the steel pipe, it can only be used for specifications with a diameter of not less than Φ813mm. It cannot be used for steel pipes with a diameter less than Φ813mm, which is greatly restricted in application. In addition, the laser automatic tracking device has a complex structure, cumbersome installation, is easily disturbed, and has poor stability. Utility Model Content

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a mechanical tracking device for the internal weld of a spiral welded pipe, which is installed on the outside of the spiral welded pipe, is not limited by the internal space of the steel pipe, is suitable for tracking the internal weld of any pipe diameter, has a simple structure and good stability.

[0004] The mechanical tracking device for the internal weld of a spiral welded pipe described in the utility model comprises a base plate, on which a supporting wheel assembly and a cylinder are slidably arranged, the cylinder being connected to the supporting wheel assembly, the cylinder being able to keep the supporting wheel assembly always close to the side edge of the steel plate delivery edge, an electronic ruler assembly being also installed on the base plate, the electronic ruler assembly being able to measure the displacement of the supporting wheel and send a signal to the internal welding tracking motor.

[0005] The technical solution of the utility model is to provide a mechanical tracking device for the internal weld of a spiral welded pipe. During the production process, if the steel plate deviates laterally, the wheel assembly close to the side of the steel plate will be displaced, the displacement will be measured by the electronic ruler assembly and a signal will be sent to the internal welding tracking motor. The internal welding tracking motor will then adjust the position of the welding gun according to the displacement, so that the relative position of the welding gun and the weld of the steel pipe remains unchanged, thereby realizing automatic tracking of the weld.

[0006] Preferably, a guide rail is fixed on the bottom plate, the number of the guide rails is two, the two guide rails are arranged in parallel on the bottom plate, a slider is slidably arranged on the guide rail, a slide seat is installed above the slide seat, and the wheel assembly is fixed on the slide seat.

[0007] Furthermore, the supporting wheel assembly includes a supporting wheel and a supporting wheel support seat, the supporting wheel is rotatably connected to the supporting wheel support seat via a rotating shaft, and the supporting wheel support seat is fixedly connected to the sliding seat.

[0008] Preferably, the cylinder is connected to the base plate via a cylinder fixing seat, a fisheye joint is provided at the end of the cylinder rod, and the cylinder is connected to the wheel support seat via the fisheye joint.

[0009] Preferably, the electronic ruler assembly comprises a fixed ruler and a sliding ruler, the fixed ruler is fixed on the bottom plate, the sliding ruler is slidably connected to the fixed ruler, and the sliding ruler is connected to the slide seat through a fixed block and moves with the slide seat.

[0010] Preferably, a baffle is further provided on the bottom plate, which is located on the front and rear sides of the guide rail, and the sides of the front and rear baffles are connected to the side plates by bolts, and an accordion cover is fixed between the baffle and the slide seat, and the baffle, side plates and accordion cover together surround and form a closed area to prevent the flux spilled during welding and the oil stains generated by the oiling of the forming roller from falling on the electronic ruler assembly and causing damage.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The mechanical tracking device for the internal weld of a spiral welded pipe described in the utility model measures the displacement of the side edge of the steel plate and adjusts the position of the welding gun in real time, thereby realizing automatic tracking of the weld. The utility model is installed on the outside of the spiral welded pipe and is not limited by the internal space of the steel pipe. It is suitable for tracking the internal weld of any pipe diameter, and the device has a simple structure, is easy to install, and has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model after the baffle, side panels and accordion cover are removed;

[0015] Figure 3 It is a schematic diagram of the working state of the utility model.

[0016] In the figure: 1. bottom plate; 2. cylinder fixing seat; 3. cylinder; 4. supporting seat for wheels; 5. supporting wheels; 6. accordion cover; 7. baffle; 8. side plate; 9. guide rail; 10. slide seat; 11. fixing block; 12. slide block; 13. sliding ruler; 14. fixing ruler; 15. internally welded tracking motor; 16. steel plate. DETAILED DESCRIPTION

[0017] like Figure 1-3 As shown, this embodiment is implemented by the following technical scheme: it includes a base plate 1, on which a supporting wheel assembly and a cylinder 3 are slidably arranged, the cylinder 3 is connected to the supporting wheel assembly, the cylinder 3 can make the supporting wheel assembly always close to the side of the delivery edge of the steel plate 16, and an electronic ruler assembly is also installed on the base plate 1. The specification of the electronic ruler assembly is Miran KTF1-100MM, and the electronic ruler assembly can measure the displacement of the supporting wheel 5 and send a signal to the internal welding tracking motor 15.

[0018] In this embodiment, a guide rail 9 is fixed on the base plate 1, the model of the guide rail 9 is HGR15R, the number of the guide rails 9 is two, the two guide rails 9 are arranged in parallel on the base plate 1, a slider 12 is slidably arranged on the guide rail 9, the model of the slider 12 is HGH15CA, the number of the slider 12 is four, a slide seat 10 is installed above the slider 12, and the wheel assembly is fixed on the slide seat 10; the wheel assembly includes a wheel 5 and a wheel support seat 4, the wheel 5 is rotatably connected to the wheel support seat 4 through a rotating shaft, and the wheel support seat 4 is fixedly connected to the slide seat 10. The cylinder 3 is connected to the base plate 1 through the cylinder fixing seat 2, and a fisheye joint is provided at the end of the cylinder rod. The cylinder 3 is connected to the wheel support seat 4 through the fisheye joint; the electronic ruler assembly includes a fixed ruler 14 and a sliding ruler 13, the fixed ruler 14 is fixed on the base plate 1, the sliding ruler 13 is slidably connected to the fixed ruler 14, and the sliding ruler 13 is connected to the slide seat 10 through a fixed block 11, and moves with the slide seat 10; a baffle 7 is also provided on the base plate 1, the baffle 7 is located on the front and rear sides of the guide rail 9, and the sides of the front and rear baffles 7 are connected to the side plates 8 by bolts, and an accordion cover 6 is fixed between the baffle 7 and the slide seat 10, and the accordion cover 6 can be stretched or compressed with the movement of the slide seat 10; the baffle 7, the side plates 8 and the accordion cover 6 are surrounded together to form a closed area to prevent the flux spilled during welding and the oil stains generated by the refueling of the forming roller from falling on the electronic ruler assembly and causing damage.

[0019] The working process of the utility model is:

[0020] When the steel plate 16 deviates laterally, the wheel assembly close to the side of the steel plate 16 is displaced, driving the electronic ruler assembly, which measures the displacement and sends a signal to the internal welding tracking motor 15. The internal welding tracking motor 15 then adjusts the position of the welding gun according to the displacement, so that the relative position of the welding gun and the weld of the steel pipe remains unchanged, thereby realizing automatic tracking of the weld.

[0021] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A mechanical tracking device for the weld seam inside a spiral welded pipe, characterized in that: The invention comprises a bottom plate (1), on which a supporting wheel assembly and a cylinder (3) are slidably arranged, the cylinder (3) being connected to the supporting wheel assembly, the cylinder (3) being able to keep the supporting wheel assembly always close to the side edge of the delivery edge of the steel plate (16), and an electronic ruler assembly being able to measure the displacement of the supporting wheel is also installed on the bottom plate (1).

2. The mechanical tracking device for the weld seam inside a spiral welded pipe according to claim 1, characterized in that: A guide rail (9) is fixed on the base plate (1), the number of the guide rails (9) is two, the two guide rails (9) are arranged in parallel on the base plate (1), a slider (12) is slidably arranged on the guide rail (9), a slide seat (10) is installed above the slider (12), and the wheel assembly is fixed on the slide seat (10).

3. The mechanical tracking device for the weld seam inside a spiral welded pipe according to claim 2, characterized in that: The supporting wheel assembly comprises a supporting wheel (5) and a supporting wheel support seat (4); the supporting wheel (5) is rotatably connected to the supporting wheel support seat (4) via a rotating shaft; and the supporting wheel support seat (4) is fixedly connected to a sliding seat (10).

4. The mechanical tracking device for the weld seam inside a spiral welded pipe according to claim 3 is characterized in that: The cylinder (3) is connected to the base plate (1) via a cylinder fixing seat (2), a fisheye joint is provided at the end of the cylinder rod, and the cylinder (3) is connected to the wheel support seat (4) via the fisheye joint.

5. The mechanical tracking device for the weld seam inside a spiral welded pipe according to claim 3, characterized in that: The electronic ruler assembly comprises a fixed ruler (14) and a sliding ruler (13), wherein the fixed ruler (14) is fixed on the base plate (1), the sliding ruler (13) is slidably connected to the fixed ruler (14), and the sliding ruler (13) is connected to the slide seat (10) via a fixed block (11).

6. The mechanical tracking device for the weld seam inside a spiral welded pipe according to claim 2, characterized in that: The base plate (1) is also provided with a baffle (7), which is located at the front and rear sides of the guide rail (9), and the front and rear baffles (7) are connected to the side plates (8) by bolts on both sides, and an accordion cover (6) is fixed between the baffle (7) and the slide seat (10), and the baffle (7), the side plates (8) and the accordion cover (6) together surround and form a closed area.

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