Anti-deformation cutting device for thin-walled steel pipes

Abstract

The present invention discloses an anti-deformation cutting device for thin-walled steel pipes, which belongs to the field of steel pipe processing. The anti-deformation cutting device for thin-walled steel pipes comprises a cutting table, and further comprises: a bracket fixedly connected to the cutting table, wherein the lower end of the bracket is fixedly connected to two symmetrically arranged vertical plates, and the two vertical plates are rotatably connected to outer pipes, the axes of the two outer pipes are collinear, and a cutting gap is provided between the two outer pipes; two groups of mounting grooves are respectively provided on the inner walls of the two outer pipes, and electric clamps are fixedly installed in the two groups of mounting grooves; a cutting assembly is provided on the bracket and the vertical plate, and the cutting assembly is used to cut steel pipes; a column is provided in the two outer pipes and is collinear with the axes of the outer pipes, wherein a fixed gap is provided between the column and the inner wall of the outer pipe; the present invention can make thin-walled steel pipes less likely to deform during cutting, and effectively ensure the cutting quality of thin-walled steel pipes.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe processing, in particular to an anti-deformation cutting device for thin-walled steel pipes. Background Art

[0002] Steel pipe is a type of tubing used in piping systems for conveying fluids, bearing pressure, and transporting liquids or gases. Made from steel, it possesses excellent mechanical properties and durability. Steel pipe is typically categorized into various types based on standards and intended uses. Thin-walled steel pipe is often used to manufacture pipelines and pipe fittings.

[0003] When the thickness of thin-walled steel pipe is 1mm or less, the thin-walled steel pipe is easily deformed by the cutting equipment, and after the cutting disc has been used for a period of time, the high temperature of the cutting disc will significantly increase the probability of deformation of the thin-walled steel pipe, which will seriously affect the quality and use of the steel pipe. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that thin-walled steel pipes are easily deformed when cut by a cutting disc, and to propose an anti-deformation cutting device for thin-walled steel pipes.

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

[0006] A deformation-proof cutting device for thin-walled steel pipes comprises a cutting table, and also includes: a bracket fixedly connected to the cutting table, wherein the lower end of the bracket is fixedly connected to two symmetrically arranged vertical plates, and the two vertical plates are rotatably connected to outer tubes, the axes of the two outer tubes are collinear, and a cutting gap is provided between the two outer tubes; two groups of mounting grooves are respectively provided on the inner walls of the two outer tubes, and electric clamps are fixedly installed in the two groups of mounting grooves; a cutting assembly is provided on the bracket and the vertical plate, and the cutting assembly is used for cutting steel pipes; a column is provided in the two outer tubes and is collinear with the axes of the outer tubes, wherein a fixed gap is provided between the column and the inner wall of the outer tube, and the outer wall of the column is provided with an annular groove aligned with the cutting gap, and the bracket is provided with a blanking assembly for driving the column to move.

[0007] In order to perform circumferential cutting on thin-walled steel pipes, preferably, the cutting assembly includes a first telescopic device fixedly mounted on the bracket, wherein the telescopic end of the first telescopic device is fixedly mounted with a cutting device, and the cutting disk of the cutting device faces the cutting gap; a driving motor fixedly mounted on the outer wall of the vertical plate, wherein the output shaft of the driving motor is fixedly mounted with a driving gear, and the outer wall of the outer tube is fixedly mounted with a driven gear meshing with the driving gear.

[0008] In order to facilitate the removal of the cut steel pipe, preferably, the blanking assembly includes a second telescopic device fixedly mounted on the bracket, the telescopic end of the second telescopic device is fixedly connected to a vertical rod, wherein a pull rod is connected to the vertical rod, and the end of the pull rod is fixedly connected to the column.

[0009] In order to make it easier for the staff to remove the steel pipe from the column, the vertical rod is further connected to a rocker arm through a rotating rod, and the pull rod is rotatably connected to the movable end of the rocker arm, wherein a swing gear is fixedly installed on the outer wall of the rotating rod, and a straight rack that cooperates with the swing gear is fixedly installed on the bracket, and a linkage component that drives the pull rod to rotate is provided on the vertical rod.

[0010] In order to drive the column to rotate and throw out the iron filings in the annular groove, the linkage component further includes a passive gear fixedly connected to the outer wall of the pull rod, and the vertical rod is fixedly connected to an arc-shaped rack meshing with the passive gear.

[0011] In order to prevent the steel pipe from falling and deforming automatically, the cutting table is further fixedly connected with an upwardly inclined support plate, the axial end cross-section of the support plate is arc-shaped, and the upper end of the support plate faces the pull rod.

[0012] In order to collect iron filings generated during the cutting process, preferably, an upper U-shaped cover with an upward opening is fixedly connected to the vertical plate, and the upper U-shaped cover surrounds the cutting gap. A cleaning groove is provided at the lower end of the upper U-shaped cover, and a removable cover is provided in the cleaning groove.

[0013] In order to facilitate the collection of iron filings thrown out of the annular groove, further, a lower U-shaped cover with an opening facing downward is fixedly connected to the cutting table, and a discharge trough is provided on the cutting table. A collection box is detachably installed at the lower end of the discharge trough, and the pull rod passes through the lower U-shaped cover.

[0014] In order to prevent the thin-walled steel pipe from being completely deformed due to being too long, preferably, a support is fixedly connected to the cutting table, and a support wheel is rotatably mounted on the support.

[0015] In order to blow out the iron filings in the annular groove, a blind hole is further provided on the end of the column facing the pull rod, a fan blade is fixedly installed in the blind hole, a blowing hole is provided in the blind hole extending into the annular groove, the blowing end of the blowing hole is fixedly connected to a partition net, and the port of the blind hole is fixedly connected to a grille net.

[0016] Compared with the prior art, the present invention provides a deformation-proof cutting device for thin-walled steel pipes, which has the following beneficial effects:

[0017] 1. The thin-walled steel pipe anti-deformation cutting device is used. During the cutting process, the inner and outer walls of the steel pipe are respectively pressed against the outer pipe by the column, so the thin-walled steel pipe is not easily deformed, which effectively ensures the cutting quality of the thin-walled steel pipe;

[0018] 2. The anti-deformation cutting device for thin-walled steel pipes uses a straight rack to drive the swing gear to rotate when the thin-walled steel pipe is completely pulled out of the outer tube. The swing gear drives the pull rod to swing downward through the rotating rod, thereby driving the column and the cut steel pipe to swing downward, making it easier for workers to remove the steel pipe from the outer wall of the column, thereby improving the efficiency of steel pipe cutting;

[0019] 3. The anti-deformation cutting device for thin-walled steel pipes uses a curved rack to drive the passive gear to rotate when the pull rod swings downward, and the passive gear drives the pull rod and the column to rotate. The column can throw out the cutting iron chips remaining in the annular groove to avoid clogging of the annular groove. There is no need for manual cleaning, which is more convenient and labor-saving to use.

[0020] 4. The thin-walled steel pipe uses an anti-deformation cutting device. The rotating column will drive the fan blades in the blind hole to rotate, and the air holes will blow air into the cutting gap. The iron chips in the cutting gap can be discharged more efficiently to ensure the smooth flow of the cutting gap. The blown air flow can also dissipate heat from the column to prevent the high residual temperature on the column from heating the steel pipe and preventing the heated steel pipe from being more easily deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the axonometric structure of an anti-deformation cutting device for thin-walled steel pipes proposed by the present invention;

[0022] Figure 2 This is a structural diagram of a thin-walled steel pipe anti-deformation cutting device proposed by the present invention in use;

[0023] Figure 3 This is a partial axonometric structural diagram of a thin-walled steel pipe anti-deformation cutting device proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of a partial cross-section structure of an anti-deformation cutting device for thin-walled steel pipes proposed by the present invention;

[0025] Figure 5 The present invention proposes a thin-walled steel pipe anti-deformation cutting device Figure 4 Schematic diagram of the structure of part A;

[0026] Figure 6 This is a schematic structural diagram of a cutting table of an anti-deformation cutting device for thin-walled steel pipes proposed by the present invention.

[0027] In the figure: 1. cutting table; 2. bracket; 3. vertical plate; 4. outer tube; 5. cutting gap; 6. first telescopic device; 7. cutting device; 8. mounting groove; 9. electric clamp; 10. driving motor; 11. driving gear; 12. driven gear; 13. column; 14. fixed gap; 15. annular groove; 16. vertical rod; 17. second telescopic device; 18. pull rod; 19. rotating rod; 20. swing gear; 21. straight rack; 22. support plate; 23. rocker arm; 24. driven gear; 25. arc rack; 26. third telescopic device; 27. annular push plate; 28. blind hole; 29. ​​blowing hole; 30. partition net; 31. fan blade; 32. grille net; 33. upper U-shaped cover; 34. lower U-shaped cover; 35. discharge chute; 36. collection box; 37. cover plate; 38. support; 39. support wheel. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] Example 1:

[0031] Reference Figures 1-6 , a deformation-proof cutting device for thin-walled steel pipes, comprising a cutting table 1, and also comprising: a bracket 2, fixedly connected to the cutting table 1, wherein the lower end of the bracket 2 is fixedly connected to two symmetrically arranged vertical plates 3, the two vertical plates 3 are rotatably connected to an outer tube 4, the axes of the two outer tubes 4 are collinear, and a cutting gap 5 is provided between the two outer tubes 4; two groups of mounting grooves 8 are respectively arranged on the inner walls of the two outer tubes 4, and electric clamps 9 are fixedly installed in the two groups of mounting grooves 8; a cutting assembly, arranged on the bracket 2 and the vertical plate 3, and the cutting assembly is used to cut steel pipes; a column 13, arranged in the two outer tubes 4 and collinear with the axes of the outer tube 4, wherein a fixed gap 14 is provided between the column 13 and the inner wall of the outer tube 4, and the fixed gap 14 is used to insert the thin-walled steel pipe to be cut, and the outer wall of the column 13 is provided with an annular groove 15 aligned with the cutting gap 5, and the bracket 2 is provided with a blanking assembly for driving the column 13 to move.

[0032] When it is necessary to cut a thin-walled steel pipe, the thin-walled steel pipe is passed through the two outer tubes 4 in sequence, and the column 13 is inserted into the thin-walled steel pipe. The thin-walled steel pipe is clamped in the outer tube 4 by the electric clamp 9 in the installation groove 8, and then the circumferential cutting of the thin-walled steel pipe can be completed by the cutting assembly. During the cutting process, the inner and outer walls of the cut portion of the steel pipe are respectively pressed against the column 13 and the outer tube 4, so the thin-walled steel pipe is not easy to deform, which effectively ensures the cutting quality of the thin-walled steel pipe. After the cutting is completed, the blanking work of the thin-walled steel pipe can be conveniently completed through the blanking assembly.

[0033] Furthermore, a support 38 is fixedly connected to the cutting table 1, and a support wheel 39 is rotatably mounted on the support 38. During the cutting process, the uncut part of the thin-walled steel pipe can be placed on the support wheel 39, so that the thin-walled steel pipe can be well supported to prevent one end of the thin-walled steel pipe from being too heavy and completely deformed.

[0034] Example 2:

[0035] Reference Figures 1-4 , which is basically the same as Example 1, further discloses a specific implementation scheme of the cutting assembly.

[0036] The cutting assembly includes a first telescopic device 6 fixedly mounted on the bracket 2, wherein a cutting device 7 is fixedly mounted on the telescopic end of the first telescopic device 6, and the cutting disc of the cutting device 7 faces the cutting gap 5; a drive motor 10 fixedly mounted on the outer wall of the riser 3, wherein a driving gear 11 is fixedly mounted on the output shaft of the drive motor 10, and a driven gear 12 meshing with the driving gear 11 is fixedly mounted on the outer wall of the outer tube 4;

[0037] When it is necessary to cut thin-walled steel pipes, the thin-walled steel pipes are passed through the two outer pipes 4 in sequence, and the column 13 is inserted into the thin-walled steel pipes. The thin-walled steel pipes are clamped in the outer pipe 4 by the electric clamp 9 in the installation groove 8, and then the circumferential cutting of the thin-walled steel pipe can be completed by the cutting assembly. During the cutting process, the inner and outer walls of the cut portion of the steel pipe are respectively pressed against the column 13 and the outer pipe 4, so the thin-walled steel pipe is not easy to deform, which effectively ensures the cutting quality of the thin-walled steel pipe. After the cutting is completed, the cutting blade of the cutting device 7 is driven by the first telescopic device 6 to pass through the cutting gap 5 and the steel pipe in sequence, and the driving motor 10 is started. The driving motor 10 will drive the driven gear 12 to rotate through the driving gear 11, and the driven gear 12 will drive the outer pipe 4 to rotate, and the outer pipe 4 will drive the internal thin-walled steel pipe to rotate. The cutting device 7 can complete the cutting work of the thin-walled steel pipe through the cutting disc.

[0038] Example 3:

[0039] Reference Figure 1-Figure 3 as well as Figure 6, which is basically the same as Example 2, further discloses a specific implementation plan of the blanking component.

[0040] The blanking assembly includes a second telescopic device 17 fixedly mounted on the bracket 2. The telescopic end of the second telescopic device 17 is fixedly connected to the vertical rod 16. The vertical rod 16 is connected to a pull rod 18. The end of the pull rod 18 is fixedly connected to the column 13.

[0041] When it is necessary to cut a thin-walled steel pipe, the thin-walled steel pipe is passed through the two outer pipes 4 in sequence, and the column 13 is inserted into the thin-walled steel pipe. The thin-walled steel pipe is clamped in the outer pipe 4 by the electric clamp 9 in the installation groove 8, and then the circumferential cutting of the thin-walled steel pipe can be completed by the cutting assembly. During the cutting process, the inner and outer walls of the cut portion of the steel pipe are respectively pressed against the column 13 and the outer pipe 4, so the thin-walled steel pipe is not easily deformed, which effectively ensures the cutting quality of the thin-walled steel pipe. After the cutting is completed, the driving motor 10 is turned off and the first telescopic device 6 is used to move the thin-walled steel pipe. The dynamic cutting device 7 moves upward and resets, so that the electric clamp 9 no longer clamps the thin-walled steel pipe, and then the vertical rod 16 is driven by the second telescopic device 17 to move in the direction away from the outer tube 4. The vertical rod 16 will drive the column 13 to be pulled out from the two outer tubes 4 through the pull rod 18, and the friction force of the outer wall will drive the cut part of the thin-walled steel pipe to be pulled out synchronously, thereby completing the disassembly and blanking of the thin-walled steel pipe. In order to enable the column 13 to efficiently bring out the cut thin-walled steel pipe, the outer wall of the column 13 is also provided with anti-slip grooves that fit the inner wall of the thin-walled steel pipe.

[0042] Furthermore, the vertical rod 16 is rotatably connected to a swing rod 23 via a rotating rod 19, and the pull rod 18 is rotatably connected to the movable end of the swing rod 23. A swing gear 20 is fixedly mounted on the outer wall of the rotating rod 19, and a straight rack 21 that cooperates with the swing gear 20 is fixedly mounted on the bracket 2.

[0043] When the thin-walled steel pipe is completely pulled out of the outer tube 4, the swing gear 20 will sweep across the spur rack 21, and the spur rack 21 will drive the swing gear 20 to rotate. The swing gear 20 will drive the pull rod 18 to swing downward through the rotating rod 19, thereby driving the column 13 and the cut steel pipe to swing downward, making it easier for the staff to remove the steel pipe from the outer wall of the column 13, thereby improving the efficiency of steel pipe cutting. After removing the cut steel pipe, the second telescopic device 17 can drive the pull rod 18 to move in the opposite direction and reset it.

[0044] Furthermore, the vertical rod 16 is provided with a linkage component for driving the pull rod 18 to rotate. The linkage component includes a passive gear 24 fixedly connected to the outer wall of the pull rod 18, and an arc-shaped rack 25 meshing with the passive gear 24 is fixedly connected to the vertical rod 16;

[0045] When the pull rod 18 swings downward, the pull rod 18 will drive the passive gear 24 to sweep across the arc-shaped rack 25, and the arc-shaped rack 25 will drive the passive gear 24 to rotate, and the passive gear 24 will drive the pull rod 18 and the column 13 to rotate. The column 13 can throw out the cutting iron chips remaining in the annular groove 15 to avoid blockage of the annular groove 15, and no manual cleaning is required, which is more convenient and labor-saving to use.

[0046] Furthermore, a support plate 22 is fixedly connected to the cutting table 1 and is tilted upward. The cross-section of the axial end of the support plate 22 is arc-shaped, and the upper end of the support plate 22 faces the pull rod 18. When the column 13 drives the thin-walled steel pipe to swing downward, the support plate 22 can support the thin-walled steel pipe, thereby preventing the thin-walled steel pipe from accidentally falling off and causing damage.

[0047] Furthermore, a third telescopic device 26 is fixedly installed on the rocker arm 23, and a ring-shaped push plate 27 is fixed to the telescopic end of the third telescopic device 26. The axis of the ring-shaped push plate 27 is collinear with the axis of the outer tube 4. Therefore, when the thin-walled steel pipe on the column 13 needs to be unloaded, the third telescopic device 26 drives the ring-shaped push plate 27 to move toward the thin-walled steel pipe, and the ring-shaped push plate 27 will push toward the axial end of the thin-walled steel pipe, causing the thin-walled steel pipe to fall off the column 13. The first telescopic device 6, the second telescopic device 17 and the third telescopic device 26 are all electric telescopic rods.

[0048] Furthermore, an upper U-shaped cover 33 with an opening facing upward is fixedly connected to the vertical plate 3, and the upper U-shaped cover 33 surrounds the cutting gap 5. A cleaning groove is provided at the lower end of the upper U-shaped cover 33, and a removable cover 37 is provided in the cleaning groove; iron chips generated during cutting by the cutting equipment 7 will be thrown out from the cutting gap 5. At this time, the upper U-shaped cover 33 can block the iron chips, thereby preventing the iron chips from splashing everywhere, thereby ensuring the safety of the staff. When the iron chips in the upper U-shaped cover 33 need to be cleaned, the cover 37 is opened, and the iron chips collected in the upper U-shaped cover 33 can be discharged from the cleaning groove.

[0049] Furthermore, a lower U-shaped cover 34 with an opening facing downward is fixedly connected to the cutting table 1, and a discharge trough 35 is provided on the cutting table 1. A collection box 36 is detachably installed at the lower end of the discharge trough 35, and the pull rod 18 passes through the lower U-shaped cover 34. When the column 13 rotates and throws out the iron filings in the annular groove 15, the lower U-shaped cover 34 can block the thrown iron filings to prevent them from splashing everywhere. In order to ensure the collection effect of the lower U-shaped cover 34, the front shape of the lower U-shaped cover 34 is arc-shaped, and the iron filings collected in the lower U-shaped cover 34 will slide through the discharge trough 35 into the collection box 36, thereby effectively collecting the iron filings.

[0050] Example 4:

[0051] Reference Figure 4 and Figure 5, which is basically the same as the third embodiment, and further, a specific implementation plan for cleaning the annular groove 15 is specifically added.

[0052] A blind hole 28 is provided on one end of the column 13 facing the pull rod 18, a fan blade 31 is fixedly installed in the blind hole 28, an air hole 29 is provided in the blind hole 28 and extends into the annular groove 15, a partition 30 is fixedly connected to the air end of the air hole 29, and a grille 32 with a protective function is fixedly connected to the end of the blind hole 28;

[0053] When the column 13 rotates, the column 13 will drive the fan blades 31 in the blind hole 28 to rotate, and the fan blades 31 will blow air to the blowing hole 29, and the blowing hole 29 will blow air to the cutting gap 5. The iron chips in the cutting gap 5 can be discharged more efficiently, ensuring the smooth flow of the cutting gap 5, and the blown air flow can also dissipate heat from the column 13, preventing the high residual temperature on the column 13 from heating the steel pipe, and preventing the heated steel pipe from being more easily deformed. Among them, the partition net 30 in the blowing hole 29 can prevent large particles of iron filings from entering the blowing hole 29.

[0054] The present anti-deformation cutting device for thin-walled steel pipes, when it is necessary to cut thin-walled steel pipes, the thin-walled steel pipes are sequentially passed through the two outer pipes 4, and the column 13 is inserted into the thin-walled steel pipes, and the thin-walled steel pipes are clamped in the outer pipes 4 by the electric clamp 9 in the mounting groove 8, and then the cutting blades of the cutting device 7 are driven by the first telescopic device 6 to pass through the cutting gap 5 and the steel pipe in sequence, and the driving motor 10 is started, and the driving motor 10 drives the driven gear 12 to rotate through the driving gear 11, and the driven gear 12 drives the outer pipe 4 to rotate, and the outer pipe 4 drives the internal thin-walled steel pipe to rotate, and the cutting device 7 can complete the cutting of the thin-walled steel pipe through the cutting disc. During the cutting process, the inner and outer walls of the steel pipe at the cutting position are respectively pressed against the outer pipe 4 by the column 13, so that the thin-walled steel pipe is not easily deformed, and the cutting quality of the thin-walled steel pipe is effectively guaranteed;

[0055] When the cutting is completed, the driving motor 10 is turned off, and the cutting device 7 is driven to move upward and reset through the first telescopic device 6, so that the electric clamp 9 no longer clamps the thin-walled steel pipe, and then the vertical rod 16 is driven to move in the direction away from the outer tube 4 through the second telescopic device 17. The vertical rod 16 will drive the column 13 to be pulled out from the two outer tubes 4 through the pull rod 18, and the thin-walled steel pipe of the cut part is pulled out synchronously through the friction force of the outer wall, thereby completing the disassembly and blanking of the thin-walled steel pipe, and when the thin-walled steel pipe is completely pulled out of the outer tube 4, the swing gear 20 will sweep across the spur rack 21, and the spur rack 21 will drive the swing gear 20 to rotate, and the swing gear 20 will drive the pull rod 18 to swing downward through the rotating rod 19, thereby driving the column 13 and the cut steel pipe to swing downward, thereby making it easier for the staff to take out the steel pipe on the outer wall of the column 13, improving the steel pipe cutting efficiency, and after removing the cut steel pipe, the second telescopic device 17 drives the pull rod 18 to move in the opposite direction and reset;

[0056] When the pull rod 18 swings downward, the pull rod 18 drives the driven gear 24 to sweep across the arc-shaped rack 25, and the arc-shaped rack 25 drives the driven gear 24 to rotate, and the driven gear 24 drives the pull rod 18 and the column 13 to rotate. The column 13 can throw out the cutting iron chips remaining in the annular groove 15 to avoid clogging of the annular groove 15, and no manual cleaning is required, which is more convenient and labor-saving to use;

[0057] When the column 13 rotates, the column 13 will drive the fan blades 31 in the blind hole 28 to rotate, and the fan blades 31 will blow air to the blowing holes 29, and the blowing holes 29 will blow air to the cutting gap 5. The iron cuttings in the cutting gap 5 can be discharged more efficiently, ensuring the smooth flow of the cutting gap 5, and the blown air flow can also dissipate heat from the column 13, preventing the high residual temperature on the column 13 from heating the steel pipe, and preventing the heated steel pipe from being more easily deformed.

[0058] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A deformation-proof cutting device for thin-walled steel pipes, comprising a cutting table (1), characterized in that: Also includes: The bracket (2) is fixedly connected to the cutting table (1). The lower end of the bracket (2) is fixedly connected to two symmetrically arranged vertical plates (3), and the two vertical plates (3) are rotatably connected to an outer tube (4), the axes of the two outer tubes (4) are collinear, and a cutting gap (5) is provided between the two outer tubes (4); Two groups of mounting grooves (8) are respectively provided on the inner walls of the two outer tubes (4), and electric clamps (9) are fixedly installed in the two groups of mounting grooves (8); A cutting assembly is arranged on the bracket (2) and the vertical plate (3), and the cutting assembly is used for cutting steel pipes; The column (13) is arranged inside the two outer tubes (4) and is collinear with the axis of the outer tubes (4). A fixed gap (14) is provided between the column (13) and the inner wall of the outer tube (4), an annular groove (15) aligned with the cutting gap (5) is provided on the outer wall of the column (13), and a blanking assembly for driving the column (13) to move is provided on the bracket (2); The blanking assembly comprises: A second telescopic device (17) is fixedly mounted on the bracket (2), wherein the telescopic end of the second telescopic device (17) is fixedly connected to a vertical rod (16). The vertical rod (16) is connected to a pull rod (18), and the end of the pull rod (18) is fixedly connected to the column (13); the vertical rod (16) is rotatably connected to a rocker rod (23) via a rotating rod (19), and the pull rod (18) is rotatably connected to the movable end of the rocker rod (23). The outer wall of the rotating rod (19) is fixedly mounted with a swing gear (20), the bracket (2) is fixedly mounted with a straight rack (21) matched with the swing gear (20), and the vertical rod (16) is provided with a linkage component for driving the pull rod (18) to rotate; the linkage component includes a passive gear (24) fixedly connected to the outer wall of the pull rod (18), and the vertical rod (16) is fixedly connected with an arc-shaped rack (25) meshing with the passive gear (24); A lower U-shaped cover (34) with an opening facing downward is fixedly connected to the cutting table (1), a discharge chute (35) is provided on the cutting table (1), a collection box (36) is detachably mounted on the lower end of the discharge chute (35), and the pull rod (18) passes through the lower U-shaped cover (34).

2. The anti-deformation cutting device for thin-walled steel pipe according to claim 1, characterized in that: The cutting assembly comprises: a first telescopic device (6) fixedly mounted on the bracket (2), Wherein, a cutting device (7) is fixedly mounted on the telescopic end of the first telescopic device (6), and the cutting disc of the cutting device (7) faces the cutting gap (5); A drive motor (10) fixedly mounted on the outer wall of the vertical plate (3), The output shaft of the driving motor (10) is fixedly mounted with a driving gear (11), and the outer wall of the outer tube (4) is fixedly mounted with a driven gear (12) meshingly connected with the driving gear (11).

3. The anti-deformation cutting device for thin-walled steel pipe according to claim 1, characterized in that: A support plate (22) arranged to tilt upward is fixedly connected to the cutting table (1), the axial end cross-section of the support plate (22) is arc-shaped, and the upper end of the support plate (22) faces the pull rod (18).

4. The anti-deformation cutting device for thin-walled steel pipes according to claim 1, characterized in that: An upper U-shaped cover (33) with an upward opening is fixedly connected to the vertical plate (3), and the upper U-shaped cover (33) surrounds the cutting gap (5). A cleaning groove is provided at the lower end of the upper U-shaped cover (33), and a detachable cover plate (37) is provided in the cleaning groove.

5. The anti-deformation cutting device for thin-walled steel pipe according to claim 1, characterized in that: A support (38) is fixedly connected to the cutting table (1), and a support wheel (39) is rotatably mounted on the support (38).

6. The anti-deformation cutting device for thin-walled steel pipes according to claim 1, characterized in that: A blind hole (28) is provided on one end of the column (13) facing the pull rod (18), a fan blade (31) is fixedly installed in the blind hole (28), a blowing hole (29) extending into the annular groove (15) is provided in the blind hole (28), a partition net (30) is fixedly connected to the blowing end of the blowing hole (29), and a grille net (32) is fixedly connected to the end of the blind hole (28).

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