RU174982U1 - DEVICE FOR CHANGING POSITION OF PIPES IN THE WELDING PROCESS - Google Patents

Abstract

The device is intended for welding pipes, used mainly for the construction of oil and gas pipelines, as well as water utilities and heating networks. The technical problem of increasing productivity is realized by carrying out a set of welding operations while reducing the positioning time of the pipe billet. A device for welding pipes contains a welding unit connected by a traction and movable welding trolleys with support rollers. Support rollers are designed to accommodate the tube billet and are connected to the drive, which ensures the rotation of the tube billet in the position for welding. The drive of the support rollers is made with the possibility of rotation of the pipe billet 360 °. Each welding trolley is equipped with a plate on which drive support rollers are installed. Each plate is connected with its own drive mechanism, ensuring its vertical movement to a fixed position. The drive mechanisms are connected to a control unit having an input for inputting data on the angle of inclination of the pipe billet and an output for transmitting a control action to the corresponding drive mechanism. This ensures that the weld is up for lifting at the junction of the edges of the pipe billet for 12 hours and the weld is run for descent at the junction of the edges for 6 hours. 2 ill.

Description

The utility model relates to devices that are designed to change the position of a pipe billet in the process of welding large diameter pipes, used mainly for the construction of oil and gas pipelines, as well as water utilities and heating networks.

When organizing and modernizing production, great attention is paid to the functionality, simplicity and versatility of equipment. The technological process is built in such a way that the pipe billet undergoes a series of operations in which its position changes, in particular, its angle of inclination during various welding operations. Improvement of equipment leads to the possibility of carrying out various welding operations on the same site, requiring devices that allow maximum adjustment of the position of the pipe billet for the needs of the process.

A known mill for welding longitudinal seams of large diameter pipes of a finite length, including a welding trolley with tilt-up rollers, made with the possibility of movement along a rail mounted at an angle to the horizontal in the direction of movement of the pipe, for the possibility of welding on the run, and a welding machine ( Patent for invention RU 2291012 C2, B21C 37/08, B23K 37/04, B23K 101/06, published 01/10/2007).

The construction of the mill is complex and cumbersome, while it has a fixed angle of inclination of the rail track, which, if necessary, changes in technological parameters, in particular the angle of inclination of the tube stock, opens up the need for a long reconfiguration of the mill.

The closest analogue, selected as a prototype, is a device for welding pipes, containing a welding unit connected by a rod, and movable welding carts with support rollers made with the ability to move. Support rollers are designed to accommodate the tube billet and are connected to a drive that rotates the tube billet to the weld position (patent for invention RU 2301138 C1, B23K 37/04, B23K 101/06, published June 20, 2007). In addition, welds are performed with the horizontal position of the pipe billet.

The device has a limitation in use, since it does not involve welding on the rise and on the run, it also does not contain information about the automation of the process of turning the pipe billet into the welding position, which does not allow to evaluate the performance of this device.

Thus, the technical problem is associated with the creation of a device for changing the position of the tube stock in the welding process.

The technical problem is solved by the fact that in the device for changing the position of the tube stock in the welding process, comprising welding carts with a traction and movable with support rollers designed to accommodate the tube stock and associated with the drive, providing rotation of the tube stock in the position for welding, according to utility model, the drive of the support rollers is made with the possibility of rotation of the tube stock 360 °, each welding trolley is equipped with a plate on which the drive support rollers associated with its own drive mechanism, ensuring its vertical movement to a fixed position, and the drive mechanisms are connected to a control unit having an input for inputting data on the angle of inclination of the pipe billet and an output for transmitting control action to the corresponding drive mechanism to provide an inclined position of the pipe the workpiece when performing the weld to rise at the junction of the edges of the pipe billet for 12 hours and the execution of the weld to the descent at position edge joint for 6 hours.

Equipping each welding trolley with a plate on which the drive support rollers are mounted, connected with its own drive mechanism, ensuring its vertical movement to a fixed position, allows the pipe billet to be raised or lowered to make a weld at an angle depending on the pipe assortment, which leads to an increase its performance by expanding its functionality.

Moreover, the presence of a connection between the drive mechanisms and the control unit having an input for entering data on the angle of inclination of the pipe billet and an output for transmitting control action to the corresponding drive mechanism to ensure the inclined position of the pipe billet, allows automating the process of raising and lowering the pipe billet, thereby reducing tube billet positioning time. The drive of the support rollers with the ability to rotate the pipe billet 360 °, as well as the ability to weld for lifting at the junction of the edges of the pipe billet for 12 hours and welding for descent at the junction of the edges for 6 hours also contribute to increased productivity of the device due to the possibility of simultaneous performing several operations, namely, turning the tube stock to a predetermined position and tilting it to a predetermined angle depending on the input data.

The essence of the utility model is illustrated by drawings:

- figure 1 shows a device for welding pipes (General view, the operation of internal welding);

- figure 2 shows a device for welding pipes (General view, the operation of external welding).

A device for changing the position of a pipe billet during a pipe welding process comprises welding carts 1 connected by a rod 2 and made to move along rails 3 or along linear guides. Support rollers 4 are mounted on welding trolleys 1, are designed to accommodate the tube stock 5 and are connected to the drive 6, providing rotation of the tube stock 5 in the position for welding. In this case, the drive 6 of the support rollers 4 is made with the possibility of rotation of the pipe billet 360 °. Each welding trolley 1 is equipped with a plate 7, on which drive support rollers are mounted 4. In this case, the plate 7 is connected with its own drive mechanism 8, ensuring its vertical movement to a fixed position. The drive mechanism 8 is connected to a control unit 9 having an input for inputting data on the angle of inclination of the pipe billet 5 and an output for transmitting a control action to the corresponding drive mechanism. This ensures that the weld is up for lifting at the junction of the edges of the pipe billet for 12 hours and the weld is run for descent at the junction of the edges for 6 hours.

The principle of operation of the device for changing the position of the tube stock during the welding process is as follows.

Before the pipe billet 5 is fed into the welding zone, the operator sets the welding modes using the control unit of the device 9, including adjusting the position of the welding head 10 by lifting it on the vertical corrector 11 to the desired diameter of the pipe billet 5. In addition, to the control unit input 9 enter data on the angle of inclination of the tube stock 5. Next, the control signal is transmitted from the output of the control unit 9 to the drive mechanism 8 connected to the plate 7, to ensure vertical movement of the plate 7 to its fixed position. Next, the welding trolleys 1 connected by a rod 2 are moved to the loading zone of the tube stock 5. The tube stock 5 is mounted on the support rollers 4 and rotated on them until the edge joint is in the “weld” position by means of a drive 6 configured to accommodate the tube edge joints blanks at 12 o’clock and at 6 o’clock.

In a specific embodiment of the utility model for welding the inner seam of the tube billet 5, the optimal angle of inclination is -2 °, while the junction of the edges of the tube billet 5 is at 6 o’clock (Fig. 1), and welding is performed by an arc torch under a flux layer or in a protective environment gases.

Then the carts 1 are moved to the welding zone until the welding head 10 takes its initial position. The welding process starts. At the end of the welding process, the position of the pipe billet 5 for welding the external seam is changed. Moreover, in a specific embodiment of the utility model, the optimum angle of inclination of the tube stock 5 is + 2 °, while the position of the junction of the edges is changed using the drives of the support rollers 4 to the 12 o'clock position (Fig. 2). The weld on the rise perform an optical laser head. Welding trolleys 1 are moved to the welding zone until the welding head 10 takes its initial position. The welding process starts.

An alternative use of the drive mechanism 8, designed to ensure the inclined position of the tube stock 5, can serve as a servo with an encoder.

Claims (1)

A device for changing the position of a tube stock during a welding process, comprising welding carts with drive support rollers arranged to be moved and movable to accommodate the tube stock, configured to rotate the tube stock to a position for welding, characterized in that the drive support rollers are configured to 360 ° pipe billet rotation, each welding trolley is equipped with a drive plate made with the possibility of vertical movement to a fixed point while the drive support rollers are mounted on said drive plates associated with a control unit configured to input data on the angle of inclination of the pipe billet and output to transmit a control action to the corresponding drive plate to provide an inclined position of the pipe billet when performing a weld on lifting at the junction of the edges of the pipe billet for 12 hours and performing the weld to the descent at the junction of the edges for 6 hours.

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