A roller carrier suitable for spiral welding of steel pipes

Abstract

The application relates to the technical field of steel pipe spiral welding equipment, in particular to a roller frame suitable for steel pipe spiral welding, which comprises a translation base, roller supports, roller assemblies and an inclination angle adjuster. The translation base is slidably arranged on a translation rail. The roller supports are arranged in pairs, and each of the left and right sides of the translation base is provided with one roller support. The roller assemblies correspond to the roller supports in pairs and are used for supporting and conveying steel pipes to move. The inclination angle adjuster is arranged on a connecting plate and comprises a rotating assembly, a pulling assembly, a lifting assembly and a connecting assembly. The roller frame can realize the translation of a pair of roller assemblies and the inclination angle adjustment of the roller assemblies and the roller supports. When lifting a pair of roller supports and roller assemblies, the roller frame first lifts the rolling round shaft of the rolling assembly, greatly reduces the damping of the horizontal movement of the lifting assembly in the lifting process and makes the device run more smoothly.

Description

Technical Field

[0001] This application relates to the technical field of spiral welding equipment for steel pipes, and specifically to a roller frame suitable for spiral welding of steel pipes. Background Technology

[0002] The spiral welded pipe roller conveyor system is the core load-bearing and conveying equipment in a large-diameter spiral steel pipe welding production line. It is deployed throughout the forming unit, internal and external welding stations, cooling, flaw detection, and grinding processes, continuously supporting and rotating the large-diameter spiral steel pipe blanks and finished pipes. The steel pipes can weigh several tons and have diameters ranging from 500 to 3600 mm. During the forming process, the steel pipes need to be fed at a uniform speed along the spiral trajectory. The system consists of multiple sets of independent adjustable roller frames arranged in series along the conveying direction. Relying on the inclined V-shaped roller supports and roller assemblies on the roller frames, the system synchronously supports and drives the steel pipes forward or rotates.

[0003] However, the opening angle of the existing pair of roller assemblies is constant, which cannot adapt to the diameter variation requirements of the welded steel pipe. Therefore, a more reasonable roller frame needs to be designed. Summary of the Invention

[0004] A roller frame suitable for spiral welding of steel pipes, set on a translational ground rail, is characterized by comprising a translational base, a roller bracket, a roller assembly, and an inclination adjuster.

[0005] The translation base is slidably mounted on the translation rail. The translation base includes a pair of base baffles distributed front to back and a connecting plate between the pair of base baffles. A limiting collar is provided on the left and right sides of the middle of the connecting plate. A guide rail is provided on the front and back of the upper end of the connecting plate and is arranged in the left and right direction. An end round shaft is provided on the left and right sides between the pair of base baffles. A connecting square tube is also provided between the pair of base baffles. A supporting square rail is provided on the left and right sides of the lower end face of the pair of base baffles. A track slide seat connected to the translation rail is provided below the supporting square rail.

[0006] The roller brackets are provided in pairs, and the translation base is provided with one roller bracket on each side. The roller brackets include a bracket base plate and a hinge sleeve provided on the side of the bracket base plate and hinged to the corresponding end round shaft. The lower end face of the bracket base plate is provided with a driven inclined surface, and the upper end face of the bracket base plate is also provided with a lead screw assembly.

[0007] The roller assembly corresponds one-to-one with the roller bracket to support and transport the steel pipe; the lead screw assembly includes a rotatably mounted lead screw and a nut seat driven by the lead screw; the roller assembly includes a rotating base plate detachably mounted on the nut seat, a bearing assembly mounted on the rotating base plate, a roller body rotatably mounted in the bearing assembly, and a motor assembly mounted on the side of the bearing assembly and driving the roller body to rotate.

[0008] The tilt adjuster is mounted on the connecting plate and is used to adjust the tilt angle of a pair of roller supports. It includes a rotating component, a pulling component, a lifting component, and a connecting component.

[0009] The rotating assembly includes a positive and negative threaded tube, and the outer wall of the positive and negative threaded tube is provided with an outer wall annular groove on the left and right sides, which can be rotatably engaged with the corresponding limiting collar; the rotating assembly also includes a lever insertion hole evenly distributed in the middle of the outer wall of the positive and negative threaded tube.

[0010] The pulling assembly has one on each side, including an externally threaded rod that is screwed to a threaded tube with both positive and negative threads, and a side-mounted tube shell located on the left side of the externally threaded rod and detachably connected to the lifting base plate. The pulling assembly also includes an anti-rotation key located on the lower edge of the side-mounted tube shell, a small-diameter annular groove located on the inner edge of the side-mounted tube shell, and a large-diameter annular groove located on the left side of the small-diameter annular groove. Radial locking holes are evenly distributed around the left side of the large-diameter annular groove, and arc-shaped insert plates that are detachably connected to the externally threaded rod are evenly distributed around the right side of the side-mounted tube shell. An arc-shaped insertion hole is provided on the left end face of the externally threaded rod to engage with the arc-shaped insert plate. A bolt countersunk hole is also provided on the outer edge of the arc-shaped insertion hole, and a bolt is placed in the bolt countersunk hole.

[0011] The lifting assembly and the pulling assembly correspond one-to-one, including a lifting base plate. The lower end face of the lifting base plate is provided with a guide rail groove that cooperates with the guide slide rail. The outer side of the upper end face of the lifting base plate is provided with a lifting inclined surface that abuts against the driven inclined surface. The lifting assembly also includes a rolling assembly. The rolling assembly includes a horizontal pull through hole arranged in the left-right direction, a tube shell insertion hole provided at the right end of the horizontal pull through hole and cooperating with the side-positioned tube shell, an anti-rotation keyway provided at the lower edge of the tube shell insertion hole and cooperating with the anti-rotation key, a pull rod cavity provided on the left side of the horizontal pull through hole, a circular shaft hole provided above the pull rod cavity, a pull rod body slidably provided in the horizontal pull through hole, an active push plate provided on the left side of the pull rod body, a push plate inclined surface provided above the active push plate, and a rolling circular shaft provided in the circular shaft hole. The upper end face of the active push plate is also provided with an arc-shaped groove for accommodating the rolling circular shaft. The right end of the pull rod body is inserted into the side-positioned tube shell cavity.

[0012] It should be noted that the cross-section of the hole on the circular shaft is an oblong hole arranged in the longitudinal direction, and the upper opening of the hole on the circular shaft is smaller than the diameter of the rolling circular shaft, so as to prevent the rolling circular shaft from coming off upward.

[0013] The connecting assembly is used to connect the corresponding pulling assembly and lifting assembly. The connecting assembly includes an internally threaded tube rotatably disposed on the outer periphery of the arc-shaped insert plate, a movable circular tube slidably disposed on the right side of the inner wall of the side-mounted tube shell, radial inserts evenly distributed on the outer wall of the movable circular tube, and an active plug disposed on the left side of the outer wall of the movable circular tube. The radial inserts are staggered with the arc-shaped insert plate in the circumferential direction. The distal end of the radial insert has an incomplete thread that is screwed into the internally threaded tube. The connecting assembly also includes a rotating collar rotatably disposed in the small-diameter annular groove, an inner inclined groove disposed on the inner wall of the rotating collar and engaged with the active plug, a driving ring disposed on the side of the rotating collar and rotatably engaged with the large-diameter annular groove, and an end face inclined groove evenly distributed on the left side of the driving ring. The connecting assembly also includes a radial locking rod that is engaged with each radial locking hole. The right end of the radial locking rod is also provided with a locking rod plug that is engaged with the end face inclined groove.

[0014] It should be noted that the tube housing insertion hole and the right half of the pull rod body are provided with equally spaced anti-slip textures, and the upper and lower ends of the radial locking rod are respectively provided with corresponding anti-slip textures.

[0015] The beneficial effects of this invention are: The present invention provides a roller frame suitable for spiral welding of steel pipes, which can realize the translation of a pair of roller assemblies and the tilt angle adjustment of the roller assembly and roller support to adapt to the requirements of spiral welding of steel pipes of different diameters.

[0016] The present invention provides a roller frame suitable for spiral welding of steel pipes. When lifting a pair of roller supports and roller assemblies, the rolling shaft of the rolling component is first lifted up, so that it replaces the lifting inclined surface to contact the driven inclined surface. This greatly reduces the damping of the lateral movement of the lifting component during the lifting process, making the device operate more smoothly.

[0017] The present invention provides a roller frame suitable for spiral welding of steel pipes, wherein the pulling component and the rotating component are detachably connected. The pulling component itself is designed as two detachable parts, which facilitates the assembly of the connecting component into the pulling component. The structure is reasonable and the operation is convenient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of one embodiment of the roller frame and the translation rail.

[0020] Figure 2 This is a schematic diagram of one embodiment of the roller frame.

[0021] Figure 3 This is an isometric sectional view of one embodiment of the roller frame (roller assembly omitted).

[0022] Figure 4 This is a schematic diagram of one embodiment of the translation base.

[0023] Figure 5 This is an isometric sectional view of one embodiment of the translation base.

[0024] Figure 6 This is a schematic diagram of one embodiment of the roller support and roller assembly.

[0025] Figure 7 This is an isometric sectional view of one embodiment of the roller support.

[0026] Figure 8 This is an isometric sectional view of one embodiment of the tilt adjuster.

[0027] Figure 9 This is an isometric sectional view of one embodiment of the tilt adjuster (lifting components omitted).

[0028] Figure 10 This is an isometric sectional view of one embodiment of the rotating assembly.

[0029] Figure 11 This is an isometric sectional view of one embodiment of the pulling component.

[0030] Figure 12 This is an isometric sectional view of one embodiment of the lifting assembly.

[0031] Figure 13 This is an isometric sectional view of one embodiment of the connecting component.

[0032] Figure 14 This is a schematic diagram of one embodiment of the end face inclined groove.

[0033] The numbers in the diagram are as follows: 91. Translation track; 92. Steel pipe; 8. Translation base; 81. Base baffle; 82. Connecting plate; 83. Limiting collar; 84. Guide rail; 85. End round shaft; 86. Connecting square tube; 87. Supporting square rail; 88. Rail slide. 7. Roller support; 71. Support base plate; 72. Hinge sleeve; 73. Driven inclined plane; 74. Lead screw assembly; 6. Roller assembly; 61. Rotating base plate; 62. Bearing assembly; 63. Roller body; 64. Motor assembly; 5. Tilt adjuster; 1. Rotating assembly; 11. Threaded tube (positive and negative threads); 12. Outer wall annular groove; 13. Lever insertion hole; 2. Pull assembly, 21. External threaded rod, 22. Side-mounted tube shell, 23. Anti-rotation key, 24. Small diameter annular groove, 25. Large diameter annular groove, 26. Radial locking hole, 27. Arc-shaped insert plate, 28. Arc-shaped insert hole; 3. Lifting assembly; 31. Lifting base plate; 32. Guide rail groove; 33. Lifting inclined surface; 34. Rolling assembly; 341. Horizontal pull through hole; 342. Tube shell insertion hole; 343. Anti-rotation keyway; 344. Pull rod inner cavity; 345. Round shaft upper hole; 346. Pull rod body; 347. Active push plate; 348. Push plate inclined surface; 349. Rolling round shaft; 340. Arc-shaped groove; 4. Connecting components, 41. Internally threaded tube, 42. Moving round tube, 43. Radial insert rod, 44. Active plug, 45. Rotating collar, 46. Inner groove of the ring, 47. Drive ring, 48. End face groove, 49. Radial locking rod, 40. Locking rod plug. Detailed Implementation

[0034] It should be noted that the pull component 2 described in this case is easy to assemble: First, the arc-shaped insert plate 27 and the arc-shaped insert hole 28 are detachably connected, which facilitates the assembly of structures such as the internal threaded tube 41, the movable round tube 42, and the radial insert rod 43; furthermore, the inner wall of the right side of the side-mounted tube shell 22 is also provided with an axial slot to facilitate the passage of the active plug 44.

[0035] Then, the side-mounted tube shell 22 is broken at the left edge of the large-diameter annular groove 25, thereby forming two detachable parts, which facilitates the assembly of the rotating collar 45, the driving ring 47, the radial locking rod 49, and the locking rod plug 40.

[0036] The roller frame described in this case is suitable for spiral welding of steel pipes. Several sets are set on the translational ground rail 91, and the specific number is flexibly configured according to the actual processing conditions on site.

[0037] The roller frame described in this case enables a pair of roller assemblies 6 to translate along the lead screw assembly 74: Rotating the lead screw of the lead screw assembly 74 drives the nut seat to translate, thereby realizing the translation of the roller assembly 6.

[0038] The roller frame described in this case can also achieve tilt angle adjustment of the roller support 7 and roller assembly 6 through the tilt angle adjuster 5: Step 1. Lift the scrolling component 34: Rotating the internally threaded tube 41 drives the radial insert 43, the moving round tube 42, and the active plug 44 to move to the left. The active plug 44 acts on the inner inclined groove 46 to drive the rotating collar 45, the driving ring 47, and the end face inclined groove 48 to rotate. The end face groove 48 acts on the locking rod plug 40, thereby driving the radial locking rod 49 to move radially inward, and the radial locking rod 49 clamps and fixes the pull rod body 346.

[0039] Step 2. Tilt and lift roller bracket 7 and roller assembly 6:

[0040] Insert the lever into the lever socket 13 located above the gap above the pair of base baffles 81, and twist the lever to drive the rotating component 1 to rotate. After the rotating component 1 has rotated a certain angle, pull out the lever and insert it into the other lever socket 13 located above.

[0041] Since the anti-rotation key 23 and the anti-rotation keyway 343 are connected and restrict the rotational freedom of the pulling assembly 2, the positive and negative threaded tube 11 rotates and acts on the external threaded rod 21, thereby driving a pair of pulling assemblies 2 to move towards each other, thereby driving the pull rod body 346, the active push plate 347, and the push plate inclined surface 348 to move inward.

[0042] The inclined surface 348 of the push plate lifts the rolling shaft 349 upward and abuts against the driven inclined surface 73. When the active push plate 347 moves to the inner side of the pull rod cavity 344, the rolling shaft 349 sinks into the arc-shaped groove 340. However, at this time, the upper edge of the rolling shaft 349 is still higher than the lifting inclined surface 33. Therefore, the rolling shaft 349 directly contacts the driven inclined surface 73.

[0043] Step 3. Roller support 7 and roller assembly 6 tilt downwards: Rotating component 1 in the opposite direction drives a pair of pulling components 2 to move away from each other; The pull rod body 346, the active push plate 347, and the push plate inclined surface 348 move outward, the rolling shaft 349 sinks, and the driven inclined surface 73 directly contacts the lifting inclined surface 33. After the active push plate 347 moves to the outermost side of the inner cavity 344 of the pull rod, it drives the lifting base plate 31 and the lifting inclined surface 33 to move outward, and the driven inclined surface 73 and the support base plate 71 swing down around the hinge sleeve 72.

[0044] It should be noted that when the lubrication conditions between the lifting inclined surface 33 and the driven inclined surface 73 are good and there is no load on the steel pipe 92, the lifting base plate 31 can be directly pulled to adjust the tilt angle of the roller bracket 7 and the roller assembly 6. Rotate the internally threaded tube 41 in the opposite direction to that in step 1, drive the radial insert 43, the moving round tube 42, and the active plug 44 to move to the right, thereby driving the rotating collar 45, the driving ring 47, and the end face inclined groove 48 to rotate. The end face inclined groove 48 acts on the locking rod plug 40, thereby driving the radial locking rod 49 to move radially outward. The radial locking rod 49 contacts the inner wall of the tube shell insertion hole 342, thereby realizing the direct fixation of the pulling component 2 and the lifting base plate 31. Rotating the rotating component 1 will cause the lifting component 3 to move towards or away from each other by pulling the component 2.

Claims

1. A roller frame suitable for spiral welding of steel pipes, mounted on a translational ground rail (91), characterized in that: Includes translation base (8), roller bracket (7), roller assembly (6), and tilt adjuster (5); The translation base (8) is slidably mounted on the translation rail (91). The translation base (8) includes a pair of base baffles (81) distributed in front and back, and a connecting plate (82) between the pair of base baffles (81). A limiting collar (83) is provided on the left and right sides of the middle of the connecting plate (82). A guide rail (84) is provided on the front and back of the upper end of the connecting plate (82) and is arranged in the left and right directions. An end round shaft (85) is provided on the left and right sides between the pair of base baffles (81). The roller brackets (7) are provided in pairs, and the translation base (8) is provided with one roller bracket (7) on each side. The roller bracket (7) includes a bracket base plate (71) and a hinge sleeve (72) provided on the side of the bracket base plate (71) and hinged to the corresponding end round shaft (85). The lower end face of the bracket base plate (71) is provided with a driven inclined surface (73), and the upper end face of the bracket base plate (71) is also provided with a lead screw assembly (74). The roller assembly (6) corresponds one-to-one with the roller bracket (7) to support and transport the steel pipe (92) to move. The tilt adjuster (5) is mounted on the connecting plate (82) to adjust the tilt angle of a pair of roller supports (7), and includes a rotating component (1), a pulling component (2), a lifting component (3), and a connecting component (4). The rotating assembly (1) includes a positive and negative threaded tube (11), and the outer wall of the positive and negative threaded tube (11) is provided with an outer wall annular groove (12) on the left and right sides, which can be rotatably engaged with the corresponding limiting collar (83). The pulling assembly (2) is provided on the left and right, including an external thread rod (21) screwed to the positive and negative threaded tube (11) and a side tube shell (22) disposed on the left side of the external thread rod (21) and detachably connected to the lifting base plate (31). The lifting component (3) corresponds to the pulling component (2) one by one, including a lifting base plate (31). The lower end surface of the lifting base plate (31) is provided with a guide rail groove (32) that cooperates with the guide slide rail (84). The outer side of the upper end surface of the lifting base plate (31) is provided with a lifting inclined surface (33) that abuts against the driven inclined surface (73). The connecting component (4) is used to connect the corresponding pulling component (2) and lifting component (3).

2. A roller frame suitable for spiral welding of steel pipes according to claim 1, characterized in that: The pulling assembly (2) also includes a non-rotation key (23) located on the lower edge of the side-mounted tube shell (22), a small-diameter annular groove (24) located on the inner edge of the side-mounted tube shell (22), and a large-diameter annular groove (25) located on the left side of the small-diameter annular groove (24). Radial locking holes (26) are evenly distributed on the left side of the large-diameter annular groove (25), and arc-shaped inserts (27) that can be detachably connected to the external threaded rod (21) are evenly distributed on the right side of the side-mounted tube shell (22). The lifting assembly (3) further includes a rolling assembly (34), which includes a horizontal pull hole (341) arranged in the left-right direction, a shell insertion hole (342) located at the right end of the horizontal pull hole (341) and connected to the side-mounted shell (22), an anti-rotation keyway (343) located at the lower edge of the shell insertion hole (342) and connected to the anti-rotation key (23), a pull rod cavity (344) located on the left side of the horizontal pull hole (341), a circular shaft upper hole (345) located above the pull rod cavity (344), a pull rod body (346) slidably arranged in the horizontal pull hole (341), an active push plate (347) located on the left side of the pull rod body (346), a push plate inclined surface (348) located above the active push plate (347), and a rolling circular shaft (349) located in the circular shaft upper hole (345). The connecting assembly (4) includes an internally threaded tube (41) rotatably disposed on the outer periphery of the arc-shaped insert plate (27), a movable circular tube (42) slidably disposed on the right side of the inner wall of the side-mounted tube shell (22), radial inserts (43) evenly distributed on the outer wall of the movable circular tube (42) in the circumferential direction, and an active plug (44) disposed on the left side of the outer wall of the movable circular tube (42). The radial inserts (43) are staggered with the arc-shaped insert plate (27) in the circumferential direction. The distal end of the radial inserts (43) is formed with an incomplete thread that is screwed into the internally threaded tube (41). The connecting assembly (4) also includes a rotatable... The connecting assembly (4) includes a rotating collar (45) located in the small diameter annular groove (24), an inner inclined groove (46) located on the inner wall of the rotating collar (45) and connected to the active plug (44), a driving ring (47) located on the side of the rotating collar (45) and connected to the large diameter annular groove (25), and an end face inclined groove (48) evenly distributed on the left side of the driving ring (47). The connecting assembly (4) also includes a radial locking rod (49) that is connected to the radial locking hole (26) one by one. The right end of the radial locking rod (49) is also provided with a locking rod plug (40) that is connected to the end face inclined groove (48).

3. A roller frame suitable for spiral welding of steel pipes according to claim 2, characterized in that: The rotating assembly (1) also includes lever insertion holes (13) that are circumferentially distributed in the middle of the outer wall of the positive and negative threaded tube (11).

4. A roller frame suitable for spiral welding of steel pipes according to claim 2 or 3, characterized in that: The left end face of the external threaded rod (21) is provided with an arc-shaped insertion hole (28) that is engaged with the arc-shaped insertion plate (27). The outer edge of the arc-shaped insertion hole (28) is also provided with a bolt countersunk hole and a bolt is placed in the bolt countersunk hole.

5. A roller frame suitable for spiral welding of steel pipes according to claim 4, characterized in that: The upper surface of the active push plate (347) is also provided with an arc-shaped groove (340) for accommodating the rolling shaft (349).

6. A roller frame suitable for spiral welding of steel pipes according to claim 5, characterized in that: The lead screw assembly (74) includes a rotatably disposed lead screw and a nut seat driven by the lead screw; The roller assembly (6) includes a rotating base plate (61) detachably mounted on a nut seat, a bearing assembly (62) mounted on the rotating base plate (61), a roller body (63) rotatably mounted in the bearing assembly (62), and a motor assembly (64) mounted on the side of the bearing assembly (62) and driving the roller body (63) to rotate.

7. A roller frame suitable for spiral welding of steel pipes according to claim 6, characterized in that: A connecting square tube (86) is also provided between a pair of base baffles (81).

8. A roller frame suitable for spiral welding of steel pipes according to claim 7, characterized in that: A pair of base baffles (81) are provided with a support rail (87) on each side of the lower end face, and a track slide (88) connected to the translation rail (91) is provided below the support rail (87).

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