Arc grinding device for longitudinal welded pipe

Abstract

The utility model relates to the technical field of deep processing of longitudinal welded pipes, and discloses a longitudinal welded pipe arc grinding device which comprises a mounting table, a sliding rod is inserted in the upper surface of the mounting table in a sliding mode, and the top end of the sliding rod is fixedly connected with a jacking plate. The top supporting plate is arranged, an internal thread rotating handle is rotated according to the pipe diameter of the longitudinal welded pipe to enable a threaded column to move up and down in the threaded column, the height of the top supporting plate is driven to be adjusted, meanwhile, the top end of a top plate is slidably connected with a clamping frame in a clamped mode, and when the bottom end of a fender changes along with the height of the top supporting plate, the fender can be adjusted. The included angle between the jacking plate and the fender is changed, and then the height of the auxiliary rotating wheel is driven to be adjusted, so that the auxiliary rotating wheel conveniently supports the longitudinal welded pipes with different pipe diameters, the positions of the end frames can be adjusted according to the lengths of the longitudinal welded pipes, and the positions of the end frames on the upper surface of the mounting table can be fixed through nuts. After the second nuts are unscrewed, the positions of the inner blocks on the two sides of the lock plate can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of deep processing of straight seam welded pipes, in particular to an arc grinding device for straight seam welded pipes. Background Art

[0002] With the continuous advancement of welding pipe technology, more precise requirements are put forward for the weld reinforcement of straight seam welded pipes. When the outer weld reinforcement of straight seam welded pipes is too high, stress corrosion cracks are easily formed at the weld toe, and the stress at the weld toe is concentrated, which easily induces the generation of weld toe cracks, thereby increasing the service risk of the pipeline and increasing the anti-corrosion cost. If epoxy resin glass cloth is used for anti-corrosion during anti-corrosion operations, the outer weld reinforcement is large, which will make the weld toe difficult to press firmly. At the same time, the higher the weld, the thicker the anti-corrosion layer should be, because the standard stipulates that the thickness of the anti-corrosion layer is measured based on the top of the outer weld, which increases the anti-corrosion cost.

[0003] After the straight seam welded pipe is welded, the weld needs to be ground. Currently, this can only be done manually by grinding the weld, but the labor intensity is high and the dust has great occupational hazards. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a circular arc grinding device for straight seam welded pipes, which has the advantages of being able to fix straight seam welded pipes of different models and automatically grind straight seam welded pipes, thereby solving the problems raised in the background technology.

[0005] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0006] Preferably, the lower surface of the mounting platform is rotatably connected to an internally threaded handle, and the internally threaded handle is threadedly sleeved on the surface of the threaded column.

[0007] Preferably, both sides of the upper surface of the mounting platform are fixedly connected with top plates, the two top plates are respectively located on both sides of the top supporting plate, and the lower surface of the fender is fixedly connected with a card frame, and the card frame is movably connected to the top of the top plate.

[0008] Preferably, the two ends of the end frame are respectively slidably engaged with the two rails, the end of the end frame is fixedly connected with a threaded rod, and a nut is threadedly sleeved on the surface of the threaded rod.

[0009] Preferably, both sides of the locking plate are threadedly connected with threaded hand rods, and the ends of the threaded hand rods are rotatably connected to the sides of the slider.

[0010] Preferably, a movable plate is slidably engaged inside the rail, a fastening screw is threadedly connected to the bottom end of the movable plate, and an inner wall of the end of the fastening screw is tightly fitted to the edge of the lower surface of the mounting platform.

[0011] Preferably, the internal sliding clamp of the movable plate is connected to a slide seat, the top of the movable plate is fixedly connected to an electric telescopic rod 1, the bottom end of the electric telescopic rod 1 is fixedly connected to the top of the slide seat, the side wall of the slide seat is fixedly connected to an electric telescopic rod 2, and the end of the electric telescopic rod 2 is fixedly connected to a grinding head.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By setting up a top support plate, according to the diameter of the straight seam welded pipe, the internal threaded handle is rotated to make the threaded column move up and down inside it, and the height of the top support plate is adjusted. At the same time, since the top of the top plate is slidably connected with the card frame, when the bottom end of the fender changes with the height of the top support plate, the angle between the top support plate and the fender changes, and then the height of the auxiliary wheel is adjusted, so that the auxiliary wheel can conveniently support straight seam welded pipes of different diameters, and the position of the end frame can be adjusted according to the length of the straight seam welded pipe, and a pair of end frames can be mounted on the mounting table using nuts. The position of the upper surface is fixed. After loosening the second nut, the position of the inner block on both sides of the lock plate can be adjusted so that the side of the inner block abuts the inner wall of the straight seam welded pipe. Then, the threaded hand rod can be rotated to drive the slider to move in the grooves on both sides of the lock plate, thereby moving the position of the outer wall block and cooperating with the inner block to clamp the side wall of the straight seam welded pipe. After starting the motor, the lock plate can be driven to move, thereby driving the straight seam welded pipe to rotate, which is convenient for subsequent grinding operations. The device can fix different types of straight seam welded pipes, greatly improving the applicability of the device.

[0014] 2. A movable plate is provided, which is moved so that the movable plate corresponds to the welding position on the surface of the straight seam welded pipe, and the fastening screw is rotated to fix the position of the movable plate. The electric telescopic rod is started to adjust the height of the slide seat so that the grinding head is located on the side of the straight seam welded pipe. Finally, the electric telescopic rod is started to move the grinding head so that the surface of the grinding head fits the welding position on the straight seam welded pipe, thereby facilitating the grinding of the straight seam welded pipe, solving the existing manual welding seam grinding process, saving manpower input, and reducing labor intensity and dust occupational hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the device of the utility model;

[0016] Figure 2 For this utility model Figure 1 Another perspective structural diagram;

[0017] Figure 3 This is a schematic diagram of the top supporting plate structure of the utility model.

[0018] In the figure: 1. Mounting table; 2. Slide bar; 3. Top support plate; 4. Threaded column; 5. Internally threaded handle; 6. Fender; 7. Auxiliary wheel; 8. Top plate; 9. Card frame; 10. Card rail; 11. End frame; 12. Nut 1; 13. Motor; 14. Locking plate; 15. Inner block; 16. Nut 2; 17. Outer wall block; 18. Slider; 19. Threaded hand lever; 20. Moving plate; 21. Fastening screw; 22. Slide seat; 23. Electric telescopic rod 1; 24. Electric telescopic rod 2; 25. Grinding head. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Reference Figure 1-3The top of the fender 6 is rotatably connected to the auxiliary wheel 7, and a straight seam welded pipe is placed on the top of the fender 6.

[0021] Among them, the lower surface of the mounting platform 1 is rotatably connected with an internally threaded handle 5, and the internally threaded handle 5 is threadedly sleeved on the surface of the threaded column 4. Both sides of the upper surface of the mounting platform 1 are fixedly connected with top plates 8, and the two top plates 8 are respectively located on both sides of the top supporting plate 3. The lower surface of the fender 6 is fixedly connected with a card frame 9, and the card frame 9 is movably engaged with the top of the top plate 8. Rotating the internally threaded handle 5 allows the threaded column 4 to move up and down inside it, and drives the height of the top supporting plate 3 to be adjusted. At the same time, since the top end of the top plate 8 is slidably engaged with the card frame 9, when the bottom end of the fender 6 changes with the height of the top supporting plate 3, the angle between the top supporting plate 3 and the fender 6 changes, and then drives the height of the auxiliary runner 7 to be adjusted, so that the auxiliary runner 7 can conveniently support straight seam welded pipes of different diameters.

[0022] Among them, the two ends of the end frame 11 are respectively slidably engaged with the two rails 10, the end of the end frame 11 is fixedly connected with a threaded rod, and the surface of the threaded rod is threadedly sleeved with a nut 12. The position of the end frame 11 is adjusted according to the length of the straight seam welded pipe, and the position of the end frame 11 on the upper surface of the mounting platform 1 can be fixed by using the nut 12.

[0023] Among them, both sides of the locking plate 14 are threadedly connected with a threaded hand rod 19, and the end of the threaded hand rod 19 is rotatably connected to the side of the slider 18. Rotating the threaded hand rod 19 can drive the slider 18 to move in the grooves on both sides of the locking plate 14, thereby moving the position of the outer wall block 17 and cooperating with the inner block 15 to clamp the side wall of the straight seam welded pipe. After starting the motor 13, the locking plate 14 can be driven to move.

[0024] The lower end of the electric telescopic rod 23 is fixedly connected to the upper end of the slide 22, and the side wall of the slide 22 is fixedly connected to the electric telescopic rod 24. The end of the electric telescopic rod 24 is fixedly connected to the grinding head 25. The moving plate 20 is moved so that the moving plate 20 corresponds to the welding position on the surface of the straight seam welded pipe, and the fastening screw 21 is rotated to fix the position of the moving plate 20. The electric telescopic rod 23 is started to drive the height of the slide 22 to adjust the height of the grinding head 25 so that the grinding head 25 is located on the side of the straight seam welded pipe. Finally, the electric telescopic rod 24 is started to drive the grinding head 25 to move so that the surface of the grinding head 25 fits the welding position on the straight seam welded pipe.

[0025] Working principle: when the device is in use, according to the diameter of the straight seam welded pipe, the internal threaded handle 5 is rotated to make the threaded column 4 move up and down inside it, and the height of the top support plate 3 is adjusted. At the same time, since the top of the top plate 8 is slidably engaged with the card frame 9, when the bottom end of the fender 6 changes with the height of the top support plate 3, the angle between the top support plate 3 and the fender 6 changes, and then the height of the auxiliary wheel 7 is adjusted, so that the auxiliary wheel 7 can conveniently support straight seam welded pipes of different diameters, and can adjust the position of the end frame 11 according to the length of the end frame 11, and can use nut 12 to fix the position of the end frame 11 on the upper surface of the mounting platform 1. After loosening nut 2 16, the position of the inner block 15 on both sides of the lock plate 14 can be adjusted so that the side of the inner block 15 is aligned with the straight seam welded pipe. The inner wall of the welded pipe abuts, and then rotating the threaded hand rod 19 can drive the slider 18 to move in the grooves on both sides of the lock plate 14, so that the position of the outer wall block 17 is moved and cooperates with the inner block 15, so that the side wall of the welded pipe can be clamped. After starting the motor 13, the lock plate 14 can be driven to move, thereby driving the welded pipe to rotate, moving the movable plate 20 so that the movable plate 20 corresponds to the welding position on the surface of the welded pipe, and rotating the fastening screw 21 to fix the position of the movable plate 20, starting the electric telescopic rod 1 23 to drive the height of the slide 22 to adjust the grinding head 25 so that the grinding head 25 is located on the side of the welded pipe, and finally starting the electric telescopic rod 24 to drive the grinding head 25 to move so that the surface of the grinding head 25 fits the welding position on the welded pipe, which is convenient for grinding operation.

[0026] In this description, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediary, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circular arc grinding device for straight seam welded pipes, characterized by: The invention comprises a mounting platform (1), wherein a slide bar (2) is slidably inserted into the upper surface of the mounting platform (1), the top of the slide bar (2) is fixedly connected to a top supporting plate (3), both ends of the top supporting plate (3) are rotatably connected to fenders (6), the edges of the fenders (6) are rotatably connected to auxiliary wheels (7), a straight seam welded pipe is placed on the top of the fenders (6), both sides of the edges of the mounting platform (1) are fixedly connected to rails (10), both sides of the upper surface of the mounting platform (1) are provided with end frames (11), and the end frames (12) are fixedly connected to the upper surface of the mounting platform (1). The top of the frame (11) is fixedly connected to a motor (13), the output shaft of the motor (13) is fixedly connected to a lock plate (14), and sliders (18) are slidably engaged in the sliding grooves on both sides of the lock plate (14), and one side surface of the slider (18) is fixedly connected to an outer wall block (17), and an inner block (15) is provided on one side of the outer wall block (17), and a threaded rod at one end of the inner block (15) is slidably engaged with the sliding groove on the lock plate (14), and a nut (16) is threadedly sleeved on the threaded surface at one end of the inner block (15).

2. The arc grinding device for straight seam welded pipe according to claim 1, characterized in that: The lower surface of the mounting platform (1) is rotatably connected to an internally threaded handle (5), and the internally threaded handle (5) is threadedly sleeved on the surface of the threaded column (4).

3. The arc grinding device for straight seam welded pipe according to claim 1, characterized in that: Both sides of the upper surface of the mounting platform (1) are fixedly connected with top plates (8), and the two top plates (8) are respectively located on both sides of the top supporting plate (3). The lower surface of the fender (6) is fixedly connected with a card frame (9), and the card frame (9) is movably connected to the top of the top plate (8).

4. The arc grinding device for straight seam welded pipe according to claim 1, characterized in that: The two ends of the end frame (11) are respectively slidably engaged with the two rails (10); the end of the end frame (11) is fixedly connected with a threaded rod, and a nut (12) is threadedly sleeved on the surface of the threaded rod.

5. The arc grinding device for straight seam welded pipe according to claim 1, characterized in that: Both sides of the locking plate (14) are threadedly connected to threaded hand rods (19), and the ends of the threaded hand rods (19) are rotatably connected to the sides of the slider (18).

6. The arc grinding device for straight seam welded pipe according to claim 1, characterized in that: The inner sliding clamp of the rail (10) is connected with a movable plate (20), the bottom end of the movable plate (20) is threadedly connected with a fastening screw (21), and the inner wall of the end of the fastening screw (21) is tightly fitted with the edge of the lower surface of the mounting platform (1).

7. The arc grinding device for straight seam welded pipe according to claim 6, characterized in that: The movable plate (20) is internally slidably engaged with a slide seat (22); the top end of the movable plate (20) is fixedly connected to an electric telescopic rod (23); the bottom end of the electric telescopic rod (23) is fixedly connected to the top end of the slide seat (22); the side wall of the slide seat (22) is fixedly connected to an electric telescopic rod (24); and the end of the electric telescopic rod (24) is fixedly connected to a grinding head (25).

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