MOBILE FACTORY OF STEEL SHEET COIL HELICAL PIPE

Abstract

A mobile factory of steel sheet coil helical pipe includes a factory for the production of helical pipes that can be mounted on trailers, rafts, or container-type structures that is distinguished by its high production speed and use of steel sheet coils of up to 1 possible thanks to the use of an optional coil driver, a beveler and a wire welding system that may contain two, three, four, or five welding wires per pass (internal and external).

Claims

1-8. (canceled)

9. A mobile factory of steel sheet coil helical pipe, comprising: a helical pipe obtained from steel sheet coils using equipment mounted on an autonomous low trailer with sufficient electrical energy to drive pullers, a press, a calander, and a welding machine that operates with steel sheet coils of up to 1, wherein the mobile factory further comprises a coil driver at a front of the trailer that positions the coil on the unwinder; pullers move the steel sheet along a production line through facing presses and a pipe straightener; a beveler makes chamfers ranging from 15? to 30? on side edges of the steel sheet; guide tables maintain alignment of the steel sheet in a direction of the calander; and, in a welding machine, a wire welding system contains two to five welding wires per pass.

10. The mobile factory of steel sheet coil helical pipe according to claim 9, wherein the coil driver comprises a gantry with casters supported on rails located on the factory floor that allow it to move in a direction of the unwinder; at a base of the gantry are elevated tracks whose rails are traversed by rollers to allow for the sliding of the cradle that receives the coil, which is moved by a hydraulic cart located on the cross-beam.

11. The mobile factory of steel sheet coil helical pipe according to claim 9, further comprising repositioning of the pullers located between the new pipe straightener, and the beveler, flanked by the guide tables, which one guide table is followed by the optional complementary puller and another guide table.

12. The mobile factory of steel sheet coil helical pipe according to claim 9, further comprising a press.

13. The mobile factory of steel sheet coil helical pipe according to claim 9, wherein the pipe straightener possesses upper cylinders parallel to lower cylinders, driven by electric motors, and configured to be adjusted by spindles with regulating locks.

14. The mobile factory of steel sheet coil helical pipe according to claim 9, wherein the beveler encompasses two side edges of the steel sheet and an electric motor that drives a milling cutter whose cutting inserts are adjusted to angles of between 15? and 30?.

15. The mobile factory of steel sheet coil helical pipe according to claim 9, wherein said factory is mounted on a raft.

16. The mobile factory of steel sheet coil helical pipe according to claim 9, wherein said factory is mounted on a container-type structure.

Description

DESCRIPTION OF THE FIGURES

[0018] The invention is described below in its form of embodiment, and, for improved comprehension reference is made to the attached drawings, which represent:

[0019] FIG. 1: Schematic side view of the mobile factory of helical pipe mounted on a trailer;

[0020] FIG. 2: Upper view of the beveler of the mobile factory of helical pipe mounted on a trailer;

[0021] FIG. 3: Upper view of the beveler of the mobile factory of helical pipe;

[0022] FIG. 4: Side view of the beveler of the mobile factory of helical pipe, with detail of the cutting element;

[0023] FIG. 5: Side view of the welding assembly of the mobile factory of helical pipe, with detail of the cutting element, with two welding wires;

[0024] FIG. 6: Side view of the welding assembly of the mobile factory of helical pipe mounted on a trailer, with three welding wires;

[0025] FIG. 7: Side view of the welding assembly of the mobile factory of helical pipe, with four welding wires;

[0026] FIG. 8: Side view of the welding assembly of the mobile factory of helical pipe, with five welding wires;

[0027] FIG. 9: Front view of the coil driver of the mobile factory of helical pipe;

[0028] FIG. 10: Side view of the coil driver of the mobile factory of helical pipe;

[0029] FIG. 11: Perspective view of the pipe straightener of the mobile factory of helical pipe;

[0030] FIG. 12: Schematic side view of the mobile factory of helical pipe mounted on a raft;

[0031] FIG. 13: Schematic top view of the mobile factory of helical pipe mounted on a raft;

[0032] FIG. 14: Schematic side view of the mobile factory of helical pipe mounted on a container-like structure;

[0033] FIG. 15: Upper schematic view of the mobile factory of helical pipe mounted on a container-like structure.

DETAILED TECHNICAL DESCRIPTION OF THE INVENTION

[0034] MOBILE FACTORY OF STEEL SHEET COIL HELICAL PIPE, consisting of a factory for the production of helical pipes that can be mounted on trailers (1), rafts (2), container-like structures (3) which is distinguished by its high production speed and the use of steel sheet coils of up to 1 and the use of an optional coil driver (4), a beveler (13) and a wire welding system (18) that may contain two (36), three (37), four (38) or five (39) welding wires per pass (internal and external).

[0035] More specifically, the invention concerns a factory for the production of helical pipes using steel sheet coils, preferably from % to 1 in thickness, which is mobile since it can be mounted on a low trailer (1), raft (2) or container-type structure (3), all autonomous and with sufficient electrical energy to drive the equipment necessary to transform a sheet strip into a helicoidal pipe at substantial speed, which results in a more productive factory model. The factory (1, 2, 3) for the production of helical pipes comprises an optional coil driver (4), used to speed up the changing and replacement of coils, since it enables the independent movement of the external support duly positioned in the region of the unwinder (6) where the steel sheet coil is moved by a set of at least three pullers (7, 8, 9) strategically positioned along the production line. Due to the fact that it operates with steel sheet coils of greater thicknesses and considering the need for increased production speed, it was necessary to add a press (10) to the existing press (11) and position them frontally, and to reposition the pullers (7, 8) located between the new pipe straightener (12), the bevel (13), lined by the guide tables (14, 15), this guide table (15) being followed by the optional supplementary puller (9) and another guide table (16) preceding the calander (17) and the welding machine (18). The optional coil driver (4), responsible for the swift placement of the coil in the unwinder (6), is positioned at the front of the trailer (1), raft (2) or container-type structure (3) and comprises a gantry (19) with casters (20) which, supported on rails (21) located on the factory floor (1, 2, 3), allows it to move towards the unwinder (6), where, at the base of said grantry (19) are elevated tracks (22) whose rails (23) traversed by rollers (24) allow for the sliding of the cradle (25) that receives the coil, which is moved by means of a hydraulic cart (26) located on the cross-beam (27). Positioned in the coil on the unwinder (6), the pullers (7, 8, 9) enter into action moving the steel sheet along the production line through the facing presses (10, 11) and the pipe straightener (12) where upper cylinders (28) parallel to lower cylinders (29), duly driven by electric motors (30), capable of adjustment by means of unwinders (31) with regulating locks (32), ready the steel sheet to enter the beveler (13), where the side edges are submitted to chamfers ranging between 15? and 30?, allowing for complete penetration of the weld into the joints of steel sheets with thicknesses of up to 1 and with fewer passes. The beveler (13) encompasses the two side edges of the sheet and comprises an electric motor (33) that drives the milling cutter (34) whose cutting inserts (35) are adjusted to angles of between 15? and 30?. The sheet, subjected to all the aforementioned procedural steps, maintains an alignment due to the action of the guide tables (14, 15, 16) proceeding to the calander (17) where the approximate sides take the form of a helical pipe for subsequent submission to the process of welding in the welding machine (18) where a wire welding system may contain two (36), three (37), four (38) or five (39) welding wires per pass (internal and external), either in the tandem-arc configuration (a welding source for each wire) and/or twin-arc (single welding power supply) and/or mixed (tandem-arc+twin-arc), where the choice of the system will depend on the parameters to be used.