A galvanizing machine for the production of large diameter thin-walled steel pipes

Abstract

The present invention discloses a galvanizing machine for the production of large-diameter thin-walled steel pipes, comprising a supporting frame and a longitudinal frame connected to each other, a pipe pressing mechanism installed on the supporting frame, the pipe pressing mechanism comprising a mounting frame and a first connecting plate, the first connecting plate connected to the mounting frame via a first lifting assembly, a pipe pressing member connected below the first connecting plate, an arc-shaped pipe pressing groove provided on the bottom surface of the pipe pressing member, the first lifting assembly driven by a first driving assembly; a displacement frame is provided between the two pipe pressing mechanisms, a moving wheel is installed at the bottom of the displacement frame, the displacement frame is driven by a second driving assembly, and a pushing mechanism is installed on the displacement frame. The transmission mode of the present invention is changed from geared disc transmission to linear transmission, which reduces resistance, reduces motor power, and effectively saves energy. In addition, by utilizing the cooperation of the first lifting assembly, the second lifting assembly and the pushing mechanism, the steel pipe will not shake arbitrarily during galvanizing, reducing contact with the equipment, and effectively reducing the phenomenon of dents in the galvanized pipe.

Description

Technical Field

[0001] The invention relates to the technical field of galvanizing machine equipment, in particular to a galvanizing machine for producing large-diameter thin-walled steel pipes. Background Art

[0002] Currently, when hot-dip galvanizing steel pipes, a geared disc full-immersion automatic galvanizing method is generally used, which uses the mechanical principle of dialing in, pressing down, gearing, dialing out, and lifting. As the galvanized steel pipe falls in, it is pressed in from one end (front end) through a pressing device to form an inclined angle. The air in the steel pipe is expelled through the rear end. The steel pipe falls onto a C-shaped bracket and rotates with the geared disc to complete continuous galvanizing. The material is then shifted horizontally to the feeder rack by a material feeder and lifted by a lifting hook to complete the galvanizing. However, when using the traditional geared disc full-immersion automatic galvanizing method, the geared disc encounters great resistance to rotation, which greatly increases the power of the motor and greatly increases energy consumption. In addition, when producing thin-walled galvanized pipes, due to the thin pipe wall and the large number of contact points between the steel pipe and the C-shaped bracket when the steel pipe rotates on the C-shaped bracket, the high production speed can easily cause pitting.

[0003] In view of the shortcomings of the existing technology, the present invention provides a galvanizing machine for producing large-diameter thin-walled steel pipes, which solves the problem that gear-disc type galvanizing machines have high energy consumption and are prone to causing pitting when producing thin-walled pipes. Summary of the Invention

[0004] The purpose of the present invention is to provide a galvanizing machine for the production of large-diameter thin-walled steel pipes to solve the above-mentioned problems.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The lifting mechanism is a bridge shaped like a bridge shaped like a ship, and the bridge shaped like a ship's upper end is connected to the bridge by a bolt, and the bolt has a round shank to contact with the bridge. Furthermore, a first limiting assembly is provided between the mounting frame and the displacement frame, and the first limiting assembly includes a first sensor fixed on the mounting frame and a first sensor plate installed on the displacement frame.

[0007] Furthermore, the first lifting assembly and the second lifting assembly have the same structure, both including a first rack and an installation box with a space opening, the first rack is vertically slidably connected in the installation box, the installation box is fixed on the installation frame, a first gear is provided in the installation box, the first gear is installed on a first rotating shaft, both ends of the first rotating shaft are rotatably connected in the installation box through bearings, the first gear is engaged with the first rack, and the bottom of the first rack is connected to the first connecting plate or the second connecting plate.

[0008] Furthermore, a T-shaped slider is provided on the inner wall of the installation box, and the T-shaped slider is slidably connected to the sliding grooves provided on the two side walls of the first rack.

[0009] Furthermore, guide columns are provided on both the front and rear sides of the installation box, and the bottoms of the guide columns pass through the installation frame or the displacement frame and are then connected to the first connecting plate or the second connecting plate.

[0010] Furthermore, both the mounting frame and the displacement frame are provided with a second limiting assembly, and the second limiting assembly includes a vertical rod, which is arranged on one side of the guide column, and the bottom of the vertical rod is fixed on the mounting frame or the displacement frame, and two upper and lower second sensors are provided on the vertical rod, and a second sensor plate is provided on the top of the guide column.

[0011] Furthermore, the first drive assembly and the third drive assembly have the same structure, both including a connected lifting motor, a reducer and a direction-changing gearbox, and the other end of the first rotating shaft is connected to the direction-changing gearbox.

[0012] Furthermore, the second driving assembly includes a transverse motor installed on the displacement frame and a second rack installed on the support frame and the longitudinal frame, the output end of the transverse motor is connected to a second rotating shaft, the other end of the second rotating shaft is connected to a second gear, and the second gear is meshed with the second rack.

[0013] Furthermore, a baffle is provided at the end of the second rack.

[0014] Furthermore, the tube pressing member and the L-shaped tube pushing plate are respectively connected to the first connecting plate and the second connecting plate through connecting rods.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] The transmission mode of the present invention is changed from geared disc transmission to linear transmission, which reduces resistance, lowers motor power, and effectively saves energy. In addition, the cooperation of the first lifting component, the second lifting component and the pushing mechanism can prevent the steel pipe from shaking at will during galvanizing, reduce contact with the equipment, and effectively reduce the pitting phenomenon of the galvanized pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a front view of the galvanizing machine for producing large-diameter thin-walled steel pipes according to the present invention;

[0019] Figure 2 This is a side view of the installation of a galvanizing machine for producing large-diameter thin-walled steel pipes according to the present invention;

[0020] Figure 3 This is a top view of the galvanizing machine for producing large-diameter thin-walled steel pipes according to the present invention;

[0021] Figure 4 This is a cross-sectional view of the installation box;

[0022] Explanation of the accompanying drawings: 1. Support frame; 2. Vertical frame; 3. Mounting frame; 4. First connecting plate; 5. First lifting assembly; 6. First driving assembly; 7. Displacement frame; 8. Second connecting plate; 9. Moving wheel; 10. Track; 11. Second lifting assembly; 12. Third driving assembly; 13. First sensor; 14. First sensing plate; 15. First rack; 16. Mounting box; 17. First gear; 18. First rotating shaft; 19. Guide column; 20. Vertical pole; 21. Second sensor; 22. Second sensing plate; 23. Transverse motor; 24. Second rack; 25. Second rotating shaft; 26. Second gear; 27. Baffle; 28. L-shaped push tube plate; 29. ​​T-shaped slider; 30. Slide groove; 31. Pipe pressing member; 32. Arc-shaped pipe pressing groove; 33. Connecting rod; 34. Zinc pot; 35. Bracket; 36. Lifting hook. DETAILED DESCRIPTION

[0023] like Figure 1-4 As shown, a galvanizing machine for producing large-diameter thin-walled steel pipes includes a support frame 1 and a longitudinal frame 2 installed in the middle position of the support frame 1.

[0024] A pipe pressing mechanism is installed on both ends of the support frame 1, and the pipe pressing mechanism includes a mounting frame 3 and a first connecting plate 4. The first connecting plate 4 is connected to the mounting frame 3 through a first lifting component 5. A pipe pressing member 31 is connected below the first connecting plate 4. An arc-shaped pipe pressing groove 32 is provided on the bottom surface of the pipe pressing member 31. The first lifting component 5 is driven by a first driving component 6.

[0025] A displacement frame 7 is provided between the two pipe pressing mechanisms. A moving wheel 9 is installed at the bottom of the displacement frame 7 . The moving wheel 9 rolls on a track 10 laid on the support frame 1 and the longitudinal frame 2 .

[0026] A first position-limiting assembly is provided between the mounting frame 3 and the displacement frame 7 . The first position-limiting assembly includes a first sensor 13 fixed on the mounting frame 3 and a first sensor plate 14 installed on the displacement frame 7 .

[0027] The displacement frame 7 is driven by a second drive assembly, which includes a transverse motor 23 mounted on the displacement frame 7 and a second rack 24 mounted on the support frame 1 and the longitudinal frame 2. The output end of the transverse motor 23 is connected to a second rotating shaft 25, and the other end of the second rotating shaft 25 is connected to a second gear 26. The second gear 26 meshes with the second rack 24. The transverse motor 23 drives the second gear 26 to move on the second rack 24, thereby driving the displacement frame 7 to move forward and backward. A baffle 27 is provided at the end of the second rack 24 to prevent the displacement frame 7 from escaping from the longitudinal frame 2.

[0028] A pushing mechanism is installed on the displacement frame 7, and the pushing mechanism includes two second connecting plates 8. L-shaped pushing tube plates 28 are installed at the bottom of the two second connecting plates 8. The second connecting plates 8 are connected to the displacement frame 7 through a second lifting assembly 11, and the two second lifting assemblies 11 are both driven by a third driving assembly 12.

[0029] The tube pressing member 31 and the L-shaped tube pushing plate 28 are respectively connected to the first connecting plate 4 and the second connecting plate 8 through connecting rods 33 .

[0030] Guide columns 19 are provided on both the front and rear sides of the installation box 16 . The bottoms of the guide columns 19 pass through the installation frame 3 or the displacement frame 7 and are connected to the first connecting plate 4 or the second connecting plate 8 .

[0031] Both the mounting frame 3 and the displacement frame 7 are provided with a second limiting assembly, which includes a vertical rod 20. The vertical rod 20 is arranged on one side of the guide column 19, and the bottom of the vertical rod 20 is fixed to the mounting frame 3 or the displacement frame 7. Two upper and lower second sensors 21 are provided on the vertical rod 20, and a second sensor plate 22 is provided on the top of the guide column 19.

[0032] The first and second lifting assemblies have the same structure, both comprising a first rack 15 and a mounting box 16 with a spaced opening. The first rack 15 is vertically slidably connected within the mounting box 16. T-shaped sliders 29 are provided on the inner walls of the mounting box 16, and the T-shaped sliders 29 are slidably connected within slots 30 provided on the side walls of the first rack 15. The mounting box 16 is fixed to the mounting frame 3 and contains a first gear 17. The first gear 17 is mounted on a first rotating shaft 18, the ends of which are rotatably connected within the mounting box 16 via bearings. The first gear 17 meshes with the first rack 15, and the bottom of the first rack 15 is connected to the first connecting plate 4 or the second connecting plate 8.

[0033] The first drive assembly 6 and the third drive assembly 12 have the same structure, both including a connected lifting motor, a speed reducer and a direction-changing gearbox, and the other end of the first rotating shaft 18 is connected to the direction-changing gearbox.

[0034] The action process of the present invention is as follows:

[0035] When in use, the device is placed above the zinc pot 34, and the dried steel pipe is put into the zinc pot 34. Then the lifting motor on the left is started, driving the first connecting plate 4 on the left to press down, and then the lifting motor on the right is started again, controlling the pipe pressing member 31 to press down, so that the steel pipe is stuck in the arc-shaped pipe pressing groove 32, so that the other end of the steel pipe is tilted, and the air in the steel pipe is emptied. Then the two pipe pressing members 31 continue to press down until the second sensor 21 below senses the second sensor plate 22 and stops. At this time, the steel pipe is pressed onto the bracket 35 inside the zinc pot 34, and then the third drive assembly drives the second lifting member 31 to press down. Component 11 controls the second connecting plate 8 to press down. When the second sensor 21 on the displacement frame 7 senses the second sensor plate 22 and stops, the first drive component 6 drives the first lifting component 11 to rise, so that the pipe pressing member 31 is reset, and then the transverse motor 23 works to move the displacement frame 7, so that the L-shaped pushing plate 28 pushes the steel pipe forward until it moves to be blocked by the baffle 27. At this time, the steel pipe is pushed onto the lifting hook 36 inside the zinc pot 34, and the steel pipe is lifted by the lifting hook 36 and adsorbed on the magnetic roller to be led out. At this time, the new steel pipe is dialed into the zinc pot 34, and then the above work is repeated.

[0036] The embodiments described above are merely descriptions of 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 made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A galvanizing machine for the production of large diameter thin-walled steel pipes, characterized by: The invention comprises a support frame (1) and a longitudinal frame (2) installed at the middle position of the support frame (1); a pipe pressing mechanism is installed on both the left and right ends of the support frame (1); the pipe pressing mechanism comprises a mounting frame (3) and a first connecting plate (4); the first connecting plate (4) is connected to the mounting frame (3) through a first lifting assembly (5); a pipe pressing member (31) is connected below the first connecting plate (4); an arc-shaped pipe pressing groove (32) is provided on the bottom surface of the pipe pressing member (31); the first lifting assembly (5) is driven by a first driving assembly (6); a displacement frame (7) is provided between the two pipe pressing mechanisms, A moving wheel (9) is installed at the bottom of the displacement frame (7), and the moving wheel (9) rolls on a track (10) laid on the support frame (1) and the longitudinal frame (2). The displacement frame (7) is driven by a second driving assembly. A pushing mechanism is installed on the displacement frame (7), and the pushing mechanism includes two second connecting plates (8). L-shaped pushing tube plates (28) are installed at the bottom of the two second connecting plates (8). The second connecting plates (8) are connected to the displacement frame (7) through a second lifting assembly (11). Both of the two second lifting assemblies (11) are driven by a third driving assembly (12).

2. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 1, characterized in that: A first position-limiting assembly is provided between the mounting frame (3) and the displacement frame (7), and the first position-limiting assembly comprises a first sensor (13) fixed on the mounting frame (3) and a first sensor plate (14) installed on the displacement frame (7).

3. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 1, characterized in that: The first lifting assembly and the second lifting assembly have the same structure, both comprising a first rack (15) and a mounting box (16) with a space opening, wherein the first rack (15) is vertically slidably connected in the mounting box (16), the mounting box (16) is fixed on the mounting frame (3), a first gear (17) is provided in the mounting box (16), the first gear (17) is mounted on a first rotating shaft (18), both ends of the first rotating shaft (18) are rotatably connected in the mounting box (16) through bearings, the first gear (17) is meshed with the first rack (15), and the bottom of the first rack (15) is connected to the first connecting plate (4) or the second connecting plate (8).

4. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 3, characterized in that: A T-shaped slider (29) is provided on the inner wall of the installation box (16), and the T-shaped slider (29) is slidably connected to the sliding grooves (30) opened on the two side walls of the first rack (15).

5. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 4, characterized in that: Guide columns (19) are provided on both the front and rear sides of the installation box (16). The bottom of the guide column (19) passes through the installation frame (3) or the displacement frame (7) and is connected to the first connecting plate (4) or the second connecting plate (8).

6. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 5, characterized in that: The mounting frame (3) and the displacement frame (7) are both provided with a second limiting assembly, the second limiting assembly comprising a vertical rod (20), the vertical rod (20) being arranged on one side of the guide column (19), and the bottom of the vertical rod (20) being fixed on the mounting frame (3) or the displacement frame (7), the vertical rod (20) being provided with two upper and lower second sensors (21), and the top of the guide column (19) being provided with a second sensor plate (22).

7. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 6, characterized in that: The first drive assembly (6) and the third drive assembly (12) have the same structure, both comprising a connected lifting motor, a speed reducer and a direction-changing gearbox, and the other end of the first rotating shaft (18) is connected to the direction-changing gearbox.

8. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 1, characterized in that: The second driving assembly comprises a transverse motor (23) mounted on the displacement frame (7) and a second rack (24) mounted on the support frame (1) and the longitudinal frame (2); the output end of the transverse motor (23) is connected to a second rotating shaft (25); the other end of the second rotating shaft (25) is connected to a second gear (26); the second gear (26) and the second rack (24) are meshed.

9. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 8, characterized in that: A baffle (27) is provided at the end of the second rack (24).

10. The galvanizing machine for producing large diameter thin-walled steel pipes according to claim 1, characterized in that: The tube pressing member (31) and the L-shaped tube pushing plate (28) are respectively connected to the first connecting plate (4) and the second connecting plate (8) via connecting rods (33).

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