Slag pouring machine for spiral steel pipe

Abstract

The utility model relates to a slag pouring machine for a spiral steel pipe, and belongs to the technical field of spiral pipe machining, the slag pouring machine comprises a workbench, a positioning plate for positioning one end of a pipe body is arranged at one end of the upper side of the workbench, a clamping plate is arranged at the other end of the upper side of the workbench, and a through hole is formed in the middle of the clamping plate; the positioning plate is provided with a through hole, the end, away from the positioning plate, of the pipe body penetrates through the through hole, a clamping assembly is arranged on the clamping plate, a scraping assembly for scraping the interior of the pipe body is arranged between the positioning plate and the clamping plate, and a rotating assembly for driving the workbench to rotate is arranged on the lower side of the end, close to the clamping plate, of the workbench. The slag pouring device has the effect of reducing the adverse effect on the slag pouring efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of spiral pipe processing, and particularly relates to a slag-dumping machine for spiral steel pipes. Background Art

[0002] When preparing spiral pipes, a steel strip of low-carbon structural steel or low-alloy structural steel needs to be wound into a pipe blank at a certain spiral angle (called the forming angle), and then the pipe seam is welded to form a steel pipe. It can produce large-diameter steel pipes with relatively narrow steel strips. During the welding process, the welding flux used forms welding slag at high temperatures and adheres to the inner wall of the pipe. It is necessary to use a slag-dumping machine to remove the welding slag and the remaining welding flux inside the pipe.

[0003] Chinese Patent with Publication No. CN112621036B discloses a slag-dumping machine for spiral pipes, which includes a bottom plate, a machine table rotatably arranged on the upper end surface of the bottom plate, and a driving oil cylinder for driving the machine table to rotate. A clamping fixed ring is fixedly arranged on the upper end surface of the machine table, and a clamping moving ring is slidably arranged. A plurality of locking rods are hinged to the circumferential wall of the clamping fixed ring. A chute is formed on the locking rod, and a lock block is slidably arranged in the chute. A plurality of connecting rods corresponding to the lock blocks one by one are hinged to the clamping moving ring. A pressing wheel is rotatably arranged at the end of the locking rod. A rotating ring is coaxially rotatably arranged inside the clamping fixed ring, and an elastically arranged support plate is embedded in the rotating ring. By clamping and positioning one end of the spiral pipe, the stability of the spiral pipe is ensured, and then the spiral pipe is lifted and rotated to quickly discharge the welding slag inside the spiral pipe. During the rotation process, the spiral pipe will vibrate slightly, which can make the welding slag adhering to the inner wall of the spiral pipe fall off automatically.

[0004] In the related art, the slag-dumping machine only drives the welding slag adhering to the inner side wall of the pipe to fall off by lifting and rotating the spiral pipe, which is likely to cause incomplete falling off of the welding slag and affect the slag-dumping efficiency. Utility Model Content

[0005] In order to reduce the adverse impact on the slag-dumping efficiency, the present application provides a slag-dumping machine for spiral steel pipes.

[0006] The slag-dumping machine for spiral steel pipes provided by the present application adopts the following technical solutions:

[0007] A slag-dumping machine for spiral steel pipes includes a workbench. At one end on the upper side of the workbench, there is a positioning plate for positioning one end of the pipe body. At the other end on the upper side of the workbench, there is a clamping plate. A through hole is formed in the middle of the clamping plate. One end of the pipe body away from the positioning plate passes through the through hole, and a clamping assembly is arranged on the clamping plate. A scraping assembly for scraping the inside of the pipe body is arranged between the positioning plate and the clamping plate. And a rotating assembly for driving the workbench to rotate is arranged on the lower side of the workbench near one end of the clamping plate.

[0008] By adopting the above technical solution, one end of the pipe body is abutted against the side wall of the positioning plate, and the other end passes through the through hole. At this time, the pipe body is fixed by the clamping assembly, and the scraping assembly is driven to scrape the welding slag adhered to the inner side wall of the pipe body until the welding slag detaches from the inner wall of the pipe body. At this time, the rotating assembly drives the workbench to lift the end of the pipe body close to the positioning plate, so as to pour out the welding slag and the remaining welding flux inside the pipe body, reducing the adverse impact on the slag pouring efficiency.

[0009] Optionally, the scraping assembly includes a positioning column with one end inserted into the side of the positioning plate close to the clamping plate and rotatably connected to the positioning plate. The diameter of the positioning column gradually decreases towards the side close to the clamping plate. A rotating member for driving the positioning column to rotate is provided on the positioning plate. The middle of the positioning column passes through and is rotatably connected to a support column arranged along the length direction of the workbench. One end of the support column passing through the positioning column is fixedly connected to the positioning plate. The other end of the support column passes through the through hole. A scraping rod is slidably connected to the support column, and a moving member for driving the scraping rod to move is provided on the support column.

[0010] By adopting the above technical solution, one end of the pipe body passes through the through hole and is sleeved outside the positioning column. The pipe body is limited by the clamping assembly. At this time, one end of the support column close to the positioning column is located in the pipe body. The rotating member drives the positioning column to drive the pipe body to rotate, and the moving member drives the scraping rod to move in the length direction of the support column, so as to scrape the welding slag adhered to the inner wall of the pipe body, further reducing the adverse impact on the slag pouring efficiency.

[0011] Optionally, the rotating member includes a first gear ring sleeved on the end of the positioning column inserted into the positioning plate and fixedly connected to the positioning column. A first gear meshing with the first gear ring is rotatably connected to the positioning plate. A first motor for driving the first gear to rotate is installed on the positioning plate.

[0012] By adopting the above technical solution, when driving the positioning column to drive the pipe body to rotate, the first motor drives the first gear to drive the first gear ring to rotate. At this time, the positioning column fixed to the first gear ring drives the pipe body to rotate with the first gear ring, so as to facilitate the scraping rod to scrape completely in the circumferential direction of the inner wall of the pipe body, further reducing the adverse impact on the slag pouring efficiency.

[0013] Optionally, a limiting column is threadedly connected to the end of the support column away from the positioning column. The diameter of the limiting column gradually decreases towards the side close to the positioning plate, and the limiting column is arranged opposite to the positioning column.

[0014] By adopting the above technical solution, when one end of the pipe body is sleeved outside the positioning column, the limiting column is threadedly connected to the end of the support column away from the positioning column until the end of the pipe body away from the positioning column is sleeved outside the limiting column, thereby further limiting the pipe body and improving the stability of the pipe body. When pouring slag, the limiting column is removed from the support column, so as to facilitate the cleaning of the welding slag and the remaining welding flux inside the pipe body, and further reduce the adverse impact on the slag pouring efficiency.

[0015] Optionally, two scraping rods arranged oppositely are provided at the ends of the support column. The moving member includes a sliding ring fixedly connected to one end of the opposite scraping rods close to each other. The sliding ring is sleeved on the support column and is slidably connected to the support column. A bidirectional lead screw is rotatably connected to the support column. The sliding rings at the ends of the support column are both threadedly connected to the bidirectional lead screw, and a driving member for driving the bidirectional lead screw to rotate is provided on the support column.

[0016] By adopting the above technical solution, the driving member drives the bidirectional lead screw to rotate. At this time, the sliding rings threadedly connected to the bidirectional lead screw move in the direction of approaching or separating from each other under the limitation of the support column, so as to drive the scraping rods on the sliding rings to move along the length direction of the support column and scrape the welding slag adhering to the inner wall of the pipe body, further reducing the adverse impact on the slag pouring efficiency.

[0017] Optionally, the clamping assembly includes pressing plates arranged oppositely in the through hole. Screws are installed on the sides of the pressing plates away from each other. The screws pass through the clamping plates and are threadedly connected to the clamping plates.

[0018] By adopting the above technical solution, the pipe body passes through the through hole and is sleeved on the positioning column. At this time, the screws are rotated to drive the pressing plates to move in the direction of approaching each other until they contact the outer wall of the pipe body, so as to facilitate the limitation of the pipe body in the height direction of the workbench and improve the stability of the pipe body during rotation.

[0019] Optionally, an arc-shaped plate parallel to the length direction of the workbench is provided on the upper side of the workbench and located on the side of the clamping plate away from the positioning plate. A first hydraulic cylinder with a telescopic rod facing the arc-shaped plate and fixedly connected to the arc-shaped plate is provided on the lower side of the arc-shaped plate. The first hydraulic cylinder is fixedly connected to the workbench.

[0020] By adopting the above technical solution, the pipe body is placed on the arc-shaped plate. The telescopic rod of the first hydraulic cylinder extends and drives the sliding plate to drive the pipe body to move until it is aligned with the through hole. At this time, the pipe body is pushed in the direction close to the positioning plate, so as to facilitate the pipe body to pass through the through hole and further reduce the adverse impact on the slag pouring efficiency.

[0021] Optionally, the rotating assembly includes a bottom plate disposed on the lower side of the workbench. The lower side of the workbench is provided with an inclined surface that slopes upward and toward the side close to the positioning plate. One end of the lower side of the workbench near the clamping plate is hinged to the bottom plate, and a second hydraulic cylinder is hinged to one end of the lower side of the workbench near the positioning plate. The other end of the second hydraulic cylinder is hinged to the bottom plate.

[0022] By adopting the above technical solution, the telescopic rod of the second hydraulic cylinder extends and drives the workbench to drive the pipe body to rotate, so as to facilitate lifting one end of the pipe body close to the positioning plate and making the pipe body form an inclined surface, which is convenient for the slag and remaining flux inside the pipe body to break away from the pipe body, reducing the adverse impact on the slag dumping efficiency.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. One end of the pipe body is abutted against the side wall of the positioning plate, and the other end passes through the through hole. At this time, the pipe body is fixed by the clamping assembly, and the scraping assembly is driven to scrape the slag adhering to the inner side wall of the pipe body until the slag breaks away from the inner wall of the pipe body. At this time, the rotating assembly drives the workbench to lift one end of the pipe body close to the positioning plate, so as to pour out the slag and remaining flux inside the pipe body, reducing the adverse impact on the slag dumping efficiency;

[0025] 2. One end of the pipe body passes through the through hole and is sleeved outside the positioning column. The pipe body is limited by the clamping assembly. At this time, one end of the support column close to the positioning column is located inside the pipe body. The rotating member drives the positioning column to drive the pipe body to rotate, and the moving member drives the scraping rod to move in the length direction of the support column, so as to scrape the slag adhering to the inner wall of the pipe body, further reducing the adverse impact on the slag dumping efficiency;

[0026] 3. The driving member drives the bidirectional lead screw to rotate. At this time, the sliding ring threadedly connected to the bidirectional lead screw moves in the direction of approaching or separating from each other under the limitation of the support column, so as to drive the scraping rod on the sliding ring to move in the length direction of the support column and scrape the slag adhering to the inner wall of the pipe body, further reducing the adverse impact on the slag dumping efficiency. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the slag dumper for spiral steel pipes in the embodiment of the present application.

[0028] Figure 2 is the structural schematic diagram showing the positional relationship between the positioning column and the limiting column in the embodiment of the present application.

[0029] Figure 3 is Figure 2 the enlarged view of the structure at A in

[0030] Figure 4 is Figure 2 the enlarged view of the structure at B in

[0031] Description of reference numerals: 1. Workbench; 2. Positioning plate; 21. Insertion slot; 3. Clamping plate; 31. Through hole; 4. Clamping assembly; 41. Pressing plate; 42. Screw rod; 5. Scraping assembly; 51. Positioning column; 52. Rotating member; 521. First gear ring; 522. First gear; 523. First motor; 53. Support column; 54. Limit column; 55. Scraping rod; 551. First sliding rod; 552. Second sliding rod; 56. Moving member; 561. Sliding ring; 562. Bi-directional lead screw; 57. Driving member; 571. Second gear ring; 572. Second gear; 573. Second motor; 6. Rotating assembly; 61. Bottom plate; 62. Second hydraulic cylinder; 7. Arc plate; 71. First hydraulic cylinder; 72. Worm gear; 73. Worm; 74. Third motor. Detailed implementation manners

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] An embodiment of the present application discloses a slag tipping machine for spiral steel pipes. Refer to Figure 1 , a slag tipping machine for spiral steel pipes includes a horizontally arranged workbench 1 on the upper side, one end of the upper side of the workbench 1 is fixedly connected with a vertical positioning plate 2, and one end of the upper side of the workbench 1 far away from the positioning plate 2 is fixedly connected with a vertical clamping plate 3. A through hole 31 is formed in the middle of the clamping plate 3, and a clamping assembly 4 for clamping the pipe body is arranged on the clamping plate 3.

[0034] A scraping assembly 5 for scraping the inside of the pipe body is arranged between the positioning plate 2 and the clamping plate 3. The lower side of the workbench 1 is set as an inclined plane that slopes upward towards the end close to the positioning plate 2, and a rotating assembly 6 for driving the workbench 1 to drive the pipe body to rotate is arranged on the lower side of the workbench 1.

[0035] Refer to Figure 1 and Figure 2 , the rotating assembly 6 includes a horizontally arranged bottom plate 61 on the lower side of the workbench 1, and one end of the lower side of the workbench 1 far away from the positioning plate 2 is rotatably connected to the upper side of the bottom plate 61. One end of the upper side of the bottom plate 61 close to the positioning plate 2 is hinged with a second hydraulic cylinder 62, and the telescopic rod of the second hydraulic cylinder 62 faces the workbench 1 and is hinged to the lower side of the workbench 1.

[0036] One end of the pipe body is abutted against the side wall of the positioning plate 2, and the other end passes through the through hole 31. At this time, the pipe body is fixed by the clamping assembly 4. The scraping assembly 5 is driven to scrape the welding slag adhered to the inner side wall of the pipe body until the welding slag detaches from the inner wall of the pipe body. The telescopic rod of the second hydraulic cylinder 62 extends and drives the workbench 1 to lift the end of the pipe body close to the positioning plate 2 and makes the pipe body form an inclined plane, facilitating the welding slag and the remaining welding agent inside the pipe body to detach from the pipe body, thus completing slag tipping.

[0037] Refer to Figure 1, the clamping assembly 4 includes two pressing plates 41 located in the through hole 31 and arranged oppositely in the vertical direction. The pressing plates 41 are each arranged in an arc shape that is recessed away from each other from both ends to the middle. In the middle of the mutually remote sides of the pressing plates 41, vertical screw rods 42 are rotatably connected. The mutually remote ends of the screw rods 42 each pass through the clamping plate 3 and are threadedly connected to the side wall of the clamping plate 3. And the lower end of the screw rod 42 located at the lower side passes through the clamping plate 3 and is inserted into the workbench 1.

[0038] The pipe body passes through the through hole 31 and is sleeved on the positioning column 51. At this time, rotate the screw rod 42 and drive the pressing plates 41 to move towards each other until they contact the outer side wall of the pipe body, which is convenient for limiting the pipe body in the height direction of the workbench 1 and improving the stability of the pipe body during rotation.

[0039] Refer to Figure 1 and Figure 2 , the scraping assembly 5 includes a positioning column 51 arranged on the side of the positioning plate 2 close to the clamping plate 3. The positioning column 51 is arranged in a frustum shape with a diameter gradually decreasing towards the side close to the clamping plate 3. A plugging slot 21 adapted to the positioning column 51 is formed on the positioning plate 2. One end of the positioning column 51 close to the positioning plate 2 is inserted into the plugging slot 21 and is rotatably connected to the positioning plate 2. A rotating member 52 for driving the positioning column 51 to rotate is provided on the positioning plate 2.

[0040] A horizontal support column 53 passes through and is rotatably connected to the axis of the positioning column 51. One end of the support column 53 passing through the positioning column 51 is inserted into the plugging slot 21 and is fixedly connected to the positioning plate 2. The other end of the support column 53 passes through the through hole 31 and is arranged in a conical shape with a diameter gradually decreasing away from the positioning plate 2. A frustum-shaped limiting column 54 opposite to the positioning column 51 is threadedly connected to the conical end of the support column 53. Two scraping rods 55 arranged oppositely and perpendicular to the length direction of the support column 53 are provided at the end of the support column 53. A moving member 56 for driving the scraping rods 55 to move along the length direction of the support column 53 is provided on the support column 53.

[0041] One end of the pipe body passes through the through hole 31 and is sleeved outside the positioning column 51. The limiting column 54 is threadedly connected to the end of the support column 53 away from the positioning column 51 until the end of the pipe body away from the positioning column 51 is sleeved outside the limiting column 54. The pipe body is limited by the pressing plates 41. At this time, one end of the support column 53 close to the positioning column 51 is located inside the pipe body. The rotating member 52 drives the positioning column 51 to drive the pipe body to rotate. The moving member 56 drives the scraping rods 55 to move in the length direction of the support column 53 until the welding slag adhered to the inner wall of the pipe body is scraped off.

[0042] When pouring out the slag, remove the limiting column 54 from the support column 53, which is convenient for cleaning the welding slag and the remaining welding agent inside the pipe body.

[0043] Refer to Figure 1 andFigure 2 The rotating member 52 includes a first gear ring 521 sleeved on the outer side of the positioning column 51 near one end of the positioning plate 2. A first gear 522 meshing with the first gear ring 521 is rotatably connected to the upper side of the positioning plate 2, and a first motor 523 for driving the first gear 522 to rotate is installed on the upper side of the positioning plate 2.

[0044] Referring to Figure 2 and Figure 3 The moving member 56 includes two sliding rings 561 respectively sleeved on the ends of the support columns 53 and slidably connected to the support columns 53. The scraping rods 55 located at the same end of the support columns 53 each include a first sliding rod 551 close to the support column 53 and fixedly connected to the side wall of the corresponding sliding ring 561. A second sliding rod 552 is inserted into and slidably connected to one end of the first sliding rod 551 away from the corresponding sliding ring 561, and the second sliding rod 552 is bolted to the first sliding rod 551.

[0045] A horizontal bidirectional lead screw 562 is rotatably connected to the lower side of the support column 53. The lower sides of the sliding rings 561 are all sleeved on the bidirectional lead screw 562 and threadedly connected to the bidirectional lead screw 562. A driving member 57 for driving the bidirectional lead screw 562 to rotate is provided on the support column 53. The driving member 57 includes a second gear ring 571 sleeved on the middle of the bidirectional lead screw 562 and fixedly connected to the bidirectional lead screw 562. A second gear 572 meshing with the second gear ring 571 is inserted into and rotatably connected to the support column 53, and a second motor 573 for driving the second gear 572 to rotate is installed in the support column 53.

[0046] The first motor 523 drives the first gear 522 to drive the first gear ring 521 to rotate. At this time, the positioning column 51 fixed to the first gear ring 521 drives the pipe body to rotate with the first gear ring 521, so as to facilitate the scraping rods 55 to scrape completely in the circumferential direction of the inner wall of the pipe body.

[0047] The second motor 573 drives the second gear ring 571 to drive the bidirectional lead screw 562 to rotate through the second gear 572. At this time, the sliding rings 561 threadedly connected to the bidirectional lead screw 562 move in the direction of approaching or separating from each other under the limitation of the support column 53, so as to drive the scraping rods 55 on the sliding rings 561 to move along the length direction of the support column 53 and scrape the welding slag adhering to the inner wall of the pipe body.

[0048] Referring to Figure 2 and Figure 4 An arc-shaped plate 7 which is horizontal and faces the clamping plate 3 is provided at one end of the upper side of the workbench 1 and far from the positioning plate 2. The arc-shaped plate 7 is sunken downward from both sides to the middle and is located on the side of the clamping plate 3 far from the positioning plate 2. A vertical first hydraulic cylinder 71 is provided in the middle of the lower side of the arc-shaped plate 7. The lower end of the first hydraulic cylinder 71 is inserted into the workbench 1 and fixedly connected to the workbench 1, and the telescopic rod of the first hydraulic cylinder 71 faces the arc-shaped plate 7 and is fixedly connected to the arc-shaped plate 7.

[0049] Four worm wheels 72 evenly distributed along the length direction of the arc-shaped plate 7 are rotatably connected to the middle part on the upper side of the arc-shaped plate 7. The worm wheels 72 all rotate in the direction of approaching or separating from each other, and a worm 73 located below the worm wheels 72 and parallel to the length direction of the arc-shaped plate 7 is inserted and rotatably connected in the arc-shaped plate 7. The worm wheels 72 are all meshed with the worm 73, and a third motor 74 fixedly connected to the arc-shaped plate 7 is installed at one end of the worm 73 away from the clamping plate 3.

[0050] Place the pipe body on the arc-shaped plate 7. The telescopic rod of the first hydraulic cylinder 71 extends and drives the sliding plate to drive the pipe body to move until it is aligned with the through hole 31. At this time, the third motor 74 drives the worm 73 to drive the worm wheels 72 to rotate, so as to drive the pipe body to move towards the positioning plate 2 until it passes through the through hole 31 and is sleeved on the positioning column 51, thereby facilitating the pushing of the pipe body towards the positioning plate 2 and improving the installation efficiency of the pipe body.

[0051] The implementation principle of the slag-dumping machine for spiral steel pipes in the embodiment of the present application is as follows: One end of the pipe body passes through the through hole 31 and is sleeved outside the positioning column 51. The limit column 54 is threadedly connected to one end of the support column 53 away from the positioning column 51 until the end of the pipe body away from the positioning column 51 is sleeved outside the limit column 54. The pipe body is limited by the pressing plate 41. At this time, one end of the support column 53 close to the positioning column 51 is located in the pipe body. The first motor 523 drives the positioning column 51 to drive the pipe body to rotate, and the second motor 573 drives the bidirectional lead screw 562 to drive the scraping rod 55 to move in the length direction of the support column 53 until the welding slag adhered to the inner wall of the pipe body is scraped off.

[0052] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A slag dumper for spiral steel pipe, characterized in that: The invention comprises a workbench (1), wherein a positioning plate (2) for positioning one end of a tube body is provided at one end of the upper side of the workbench (1), a clamping plate (3) is provided at the other end of the upper side of the workbench (1), a through hole (31) is provided in the middle of the clamping plate (3), an end of the tube body away from the positioning plate (2) passes through the through hole (31), a clamping assembly (4) is provided on the clamping plate (3), a scraping assembly (5) for scraping the inside of the tube body is provided between the positioning plate (2) and the clamping plate (3), and a rotating assembly (6) for driving the workbench (1) to rotate is provided at the lower side of the workbench (1) near one end of the clamping plate (3).

2. The slag dumper for spiral steel pipe according to claim 1, characterized in that: The scraping assembly (5) comprises a positioning column (51) having one end inserted into a side of the positioning plate (2) close to the clamping plate (3) and rotatably connected to the positioning plate (2); the diameter of the positioning column (51) gradually decreases toward the side close to the clamping plate (3); a rotating member (52) for driving the positioning column (51) to rotate is provided on the positioning plate (2); a supporting column (53) arranged along the length direction of the workbench (1) passes through the middle of the positioning column (51) and is rotatably connected; the supporting column (53) passes through one end of the positioning column (51) and is fixedly connected to the positioning plate (2); the other end of the supporting column (53) passes through the through hole (31); a scraping rod (55) is slidably connected to the supporting column (53); and a moving member (56) for driving the scraping rod (55) to move is provided on the supporting column (53).

3. The slag dumper for spiral steel pipe according to claim 2, characterized in that: The rotating member (52) comprises a first gear ring (521) sleeved on one end of the positioning column (51) inserted into the positioning plate (2) and fixedly connected to the positioning column (51); a first gear (522) meshing with the first gear ring (521) is rotatably connected to the positioning plate (2); and a first motor (523) for driving the first gear (522) to rotate is mounted on the positioning plate (2).

4. The slag dumper for spiral steel pipe according to claim 3, characterized in that: One end of the support column (53) away from the positioning column (51) is threadedly connected to a limiting column (54), the diameter of the limiting column (54) gradually decreases towards a side close to the positioning plate (2), and the limiting column (54) is arranged opposite to the positioning column (51).

5. The slag dumper for spiral steel pipe according to claim 4, characterized in that: The ends of the support columns (53) are each provided with two scraper rods (55) arranged opposite to each other. The movable member (56) comprises a sliding ring (561) fixedly connected to one end of the scraper rod (55) which is close to each other. The sliding ring (561) is sleeved on the support column (53) and is slidably connected to the support column (53). A bidirectional lead screw (562) is rotatably connected to the support column (53). The sliding rings (561) at the ends of the support columns (53) are threadedly connected to the bidirectional lead screw (562). A driving member (57) for driving the bidirectional lead screw (562) to rotate is provided on the support column (53).

6. A slag dumper for spiral steel pipe according to claim 5, characterized in that: The clamping assembly (4) comprises a clamping plate (41) arranged relatively in the through hole (31), and a screw rod (42) is installed on the side of the clamping plate (41) that is away from each other, and the screw rod (42) passes through the clamping plate (3) and is threadedly connected to the clamping plate (3).

7. The slag dumper for spiral steel pipe according to claim 6, characterized in that: An arc-shaped plate (7) is provided on the upper side of the workbench (1) and is located on a side of the clamping plate (3) away from the positioning plate (2) and parallel to the length direction of the workbench (1). A first hydraulic cylinder (71) is provided on the lower side of the arc-shaped plate (7) and has a telescopic rod facing the arc-shaped plate (7) and fixedly connected to the arc-shaped plate (7). The first hydraulic cylinder (71) is fixedly connected to the workbench (1).

8. The slag dumper for spiral steel pipe according to claim 1, characterized in that: The rotating assembly (6) comprises a bottom plate (61) arranged at the lower side of the workbench (1); the lower side of the workbench (1) is arranged as an inclined surface inclined upwardly towards a side close to the positioning plate (2); one end of the lower side of the workbench (1) close to the clamping plate (3) is hinged to the bottom plate (61); and a second hydraulic cylinder (62) is hinged to one end of the lower side of the workbench (1) close to the positioning plate (2); the other end of the second hydraulic cylinder (62) is hinged to the bottom plate (61).

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