Galvanized steel pipe zinc layer thickness detection device

Abstract

The utility model discloses a galvanized steel pipe zinc layer thickness detection device which comprises a rack and supporting legs connected to the bottom of the rack, a first roller is installed on the inner wall of the rack and controlled by a driving assembly to rotate, a second roller is arranged on the side opposite to the first roller and installed on a transverse plate, and the transverse plate is connected with the supporting legs. The transverse plate is connected to the rack in a sliding mode, and the transverse plate is controlled to move through an adjusting assembly installed on the rack. A longitudinal rod is connected between the two supporting legs on the same side, a first hydraulic cylinder is installed on the longitudinal rod through a fastening assembly, the tops of the piston ends of the two first hydraulic cylinders are connected through a connecting plate, a plurality of coating thickness sensors are installed on the connecting plate, and the coating thickness sensors are connected with a touch display screen installed on one side of the rack. According to the utility model, multi-position zinc layer thickness measurement can be carried out on the galvanized pipe, and the galvanized pipes with different sizes can be measured, so that the applicability is expanded, the working efficiency is greatly improved, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of galvanized steel pipe production equipment, in particular to a device for detecting the thickness of zinc layer on a galvanized steel pipe. Background Art

[0002] Galvanized steel pipes are widely used due to their excellent corrosion resistance. During hot-dip galvanizing, the workpiece is immersed in molten zinc at around 450°C. The workpiece, which is at room temperature, absorbs the heat of the zinc solution. When the temperature reaches above 200°C, the interaction between zinc and iron becomes increasingly apparent, and the zinc penetrates the surface of the iron workpiece. After the workpiece is removed from the zinc solution, the workpiece temperature gradually drops below 200°C, the zinc-iron reaction ceases, and the hot-dip galvanized coating is formed.

[0003] A zinc coating that is disproportionate to the thickness of the steel will affect the adhesion between the coating and the substrate, as well as the coating's appearance. Excessively thick coatings can result in a rough appearance, easy flaking, and the coated parts will not withstand the impact of handling and installation. Therefore, it is necessary to inspect the coating on galvanized steel pipes.

[0004] The existing detection method is: manually moving the probe of a handheld coating thickness detector on the galvanized steel pipe to measure the coating thickness, which is time-consuming and labor-intensive, and has low detection efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a device for detecting the thickness of the zinc layer of a galvanized steel pipe to solve the above-mentioned problem.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The utility model discloses a device for detecting the thickness of the zinc layer of a galvanized steel pipe, comprising a frame and supporting legs connected to the bottom of the frame, a plurality of first rollers are installed on the inner wall of the frame, and the plurality of first rollers are controlled to rotate by a driving assembly installed on the outside of the frame, a second roller is provided on the side opposite to the first roller, the second roller is installed on a transverse plate, the transverse plate is slidably connected to the frame, and the transverse plate is controlled to move by an adjusting assembly installed on the frame; a longitudinal rod is connected between the two supporting legs on the same side, a first hydraulic cylinder is installed on the longitudinal rod through a fastening assembly, the tops of the piston ends of the two first hydraulic cylinders are connected by a connecting plate, a plurality of coating thickness sensors are installed on the connecting plate, and the coating thickness sensor is connected to a touch display screen installed on one side of the frame.

[0008] Furthermore, the driving assembly includes a motor fixed to the outer wall of the frame and a rotating rod passing through each of the first rollers, one end of the rotating rod is rotatably connected to the frame through a bearing, and the other end of the rotating rod passes through the frame through a bearing and is connected to a driven pulley, a driving pulley is installed on the output end of the motor, and the driving pulley and the driven pulley are connected by a belt.

[0009] Furthermore, the motor is connected to the frame via a mounting plate.

[0010] Furthermore, sliding grooves are provided at both ends of the transverse plate, and slide rails are provided on the inner wall of the frame, and the transverse plate is slidably connected to the slide rails through the sliding grooves.

[0011] Furthermore, the adjustment assembly includes a second hydraulic cylinder installed on the frame, and a piston end of the second hydraulic cylinder passes through a through hole opened on the frame and is connected to the transverse plate.

[0012] Furthermore, the fastening assembly includes a slider connected to the bottom of the first hydraulic cylinder, the slider is provided with a sliding hole, the slider is sleeved on the longitudinal rod, the longitudinal rod is provided with a groove, the slider is provided with a threaded hole, the threaded hole is connected to the sliding hole, the threaded hole is threaded with a top screw, and the bottom of the top screw is fixed in the groove.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are:

[0014] The utility model can measure the zinc layer thickness of galvanized pipes at multiple positions and can measure galvanized pipes of different sizes, thereby expanding applicability, replacing manual measurement with mechanical measurement, greatly improving work efficiency, and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a top view of the device for detecting the thickness of zinc layer on galvanized steel pipes according to the utility model;

[0017] Figure 2 This is the right view of the device for detecting the thickness of zinc layer on galvanized steel pipes according to the utility model;

[0018] Explanation of the accompanying reference numerals: 1. Frame; 2. Support leg; 3. First roller; 4. Second roller; 5. Horizontal plate; 6. Longitudinal rod; 7. First hydraulic cylinder; 8. Connecting plate; 9. Coating thickness sensor; 10. Touch screen; 11. Motor; 12. Turning rod; 13. Driven pulley; 14. Driving pulley; 15. Belt; 16. Mounting plate; 17. Slide rail; 18. Second hydraulic cylinder; 19. Slider; 20. Groove; 21. Top screw. DETAILED DESCRIPTION

[0019] like Figure 1-2 As shown, a device for detecting the thickness of the zinc layer of a galvanized steel pipe includes a frame 1 and a support leg 2 connected to the bottom of the frame 1. A plurality of first rollers 3 are mounted on the inner wall of the frame 1. The plurality of first rollers 3 are controlled to rotate by a drive assembly mounted on the outside of the frame 1. The drive assembly includes a motor 11 fixed to the outer wall of the frame 1 via a mounting plate 16 and a rotating rod 12 passing through each of the first rollers 3. One end of the rotating rod 12 is rotatably connected to the frame 1 via a bearing. The other end of the rotating rod 12 passes through the frame 1 via a bearing and is connected to a driven pulley 13. A driving pulley 14 is mounted on the output end of the motor 11. The driving pulley 14 and the driven pulley 13 are connected by a belt 15. The motor 11 drives the first rollers 3 to rotate, thereby driving the galvanized pipe to rotate.

[0020] A second roller 4 is provided on the side opposite the first roller 3. The second roller 4 is mounted on a cross plate 5, which is slidably connected to the frame 1. Slide grooves are provided at both ends of the cross plate 5, and slide rails 17 are provided on the inner wall of the frame 1. The cross plate 5 is slidably connected to the slide rails 17 via the slide grooves. The movement of the cross plate 5 is controlled by an adjustment assembly mounted on the frame 1. The adjustment assembly includes a second hydraulic cylinder 18 mounted on the frame 1. The piston end of the second hydraulic cylinder 18 extends through a through-hole in the frame 1 and is then connected to the cross plate 5. The second hydraulic cylinder 18 controls the movement of the cross plate 5 within the frame 1, thereby adjusting the spacing between the first roller 3 and the second roller 4 to accommodate galvanized pipes of different sizes.

[0021] A longitudinal rod 6 is connected between the two support legs 2 on the same side. A first hydraulic cylinder 7 is mounted on the longitudinal rod 6 via a fastening assembly. The fastening assembly includes a slider 19 connected to the bottom of the first hydraulic cylinder 7. The slider 19 has a sliding hole and is sleeved onto the longitudinal rod 6. The longitudinal rod 6 has a groove 20. The slider 19 has a threaded hole that communicates with the sliding hole. A top screw 21 is threadedly connected to the threaded hole, and the bottom of the top screw 21 is fixed in the groove 20. The top ends of the pistons of the two first hydraulic cylinders 7 are connected by a connecting plate 8. Several coating thickness sensors 9 are mounted on the connecting plate 8. The coating thickness sensors 9 are connected to the touch screen 10 mounted on one side of the frame 1. After adjusting the spacing between the first roller 3 and the second roller 4, loosen the top screw 21 and adjust the position of the slider 19 so that the coating thickness sensor 9 always points to the center of the galvanized pipe.

[0022] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A device for detecting the thickness of zinc layer on a galvanized steel pipe, characterized by: The invention comprises a frame (1) and a supporting leg (2) connected to the bottom of the frame (1); a plurality of first rollers (3) are installed on the inner wall of the frame (1); the plurality of first rollers (3) are controlled to rotate by a driving assembly installed on the outside of the frame (1); a second roller (4) is provided on the side opposite to the first roller (3); the second roller (4) is installed on a transverse plate (5); the transverse plate (5) is slidably connected to the frame (1); the transverse plate (5) is controlled to move by an adjusting assembly installed on the frame (1); a longitudinal rod (6) is connected between the two supporting legs (2) on the same side; a first hydraulic cylinder (7) is installed on the longitudinal rod (6) through a fastening assembly; the piston ends of the two first hydraulic cylinders (7) are connected by a connecting plate (8); a plurality of coating thickness sensors (9) are installed on the connecting plate (8); the coating thickness sensors (9) are connected to a touch display screen (10) installed on one side of the frame (1).

2. The device for detecting the zinc layer thickness of a galvanized steel pipe according to claim 1, characterized in that: The driving assembly comprises a motor (11) fixed on the outer wall of the frame (1) and a rotating rod (12) passing through each of the first rollers (3); one end of the rotating rod (12) is rotatably connected to the frame (1) through a bearing; the other end of the rotating rod (12) passes through the frame (1) through a bearing and is connected to a driven pulley (13); a driving pulley (14) is installed on the output end of the motor (11); and the driving pulley (14) and the driven pulley (13) are connected by a belt (15).

3. The device for detecting the zinc layer thickness of a galvanized steel pipe according to claim 2, characterized in that: The motor (11) is connected to the frame (1) via a mounting plate (16).

4. The device for detecting the zinc layer thickness of a galvanized steel pipe according to claim 1, characterized in that: Slide grooves are provided at both ends of the transverse plate (5), and slide rails (17) are provided on the inner wall of the frame (1). The transverse plate (5) is slidably connected to the slide rails (17) via the slide grooves.

5. The device for detecting the zinc layer thickness of a galvanized steel pipe according to claim 1, characterized in that: The adjustment assembly comprises a second hydraulic cylinder (18) mounted on the frame (1), wherein a piston end of the second hydraulic cylinder (18) passes through a through hole provided on the frame (1) and is then connected to the transverse plate (5).

6. The device for detecting the zinc layer thickness of a galvanized steel pipe according to claim 1, characterized in that: The fastening assembly includes a slider (19) connected to the bottom of the first hydraulic cylinder (7), a sliding hole is provided on the slider (19), the slider (19) is sleeved on the longitudinal rod (6), a groove (20) is provided on the longitudinal rod (6), a threaded hole is provided on the slider (19), the threaded hole is connected to the sliding hole, a top screw (21) is connected to the thread in the threaded hole, and the bottom of the top screw (21) is fixed in the groove (20).

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