SU1097471A1 - Device for welding non-rotary butts of pipes - Google Patents

Abstract

A WELDING TUBE BELT WELDING DEVICE containing a faceplate, a welding wire feed mechanism, a butt setting mechanism, a tracking mechanism, an arc length, a swing mechanism and a welding torch, characterized in that, in order to improve the quality of welding to ensure the stability of the position of the burner relative to the joint, it is equipped with a bracket mounted on the faceplate with a rotatable position, on which the tracking mechanism for the arc length and the oscillation mechanism are mounted, an axis, a hinge a fixed bracket, rez bovoy draft type pivotally mounted on the faceplate and located in the threaded bore axis and compensators backlash made in the form of springs installed i the chance of contacting with the bracket faceplate. (L about

Description

The invention relates to welding equipment and can be used in power engineering, chemical and other industries.

Devices are known for welding fixed pipe joints that contain a faceplate with a vrash drive, a welding torch, a carriage with a torch setting mechanism for a joint 1 and 2.

The disadvantage of these devices is the inaccuracy of the burner setting at the joint as a result of backlash and elastic deformations of the spring dogs, as well as the self-unscrewing of the setting elements, which results in poor quality seams in some cases.

Closest to the invention is a device for welding fixed pipe joints containing its faceplate, valve feed mechanism, welding wire feed mechanism, butt welding torch setting mechanism, arc length tracking mechanism, oscillation mechanism and welding torch. The adjustment of the welding torch across the joint (along the axis of the product) is carried out with the aid of a handle through a screw, gear, drive gear, rolling pin and console, by moving the lever around the hinge, thereby correcting the position of the torch across the joint. The adjustment of the arc gap is carried out with a knob using a pinion and a drive nut 3.

A disadvantage of the known device is the kinematic multilink, the presence of gearing and threaded connections without locking, allowing for significant play and self-unscrewing, which leads to the removal of the torch from the joint and the rejection of the welded joint.

The purpose of the invention is to improve the quality of welding by ensuring the stability of the position of the burner relative to the joint.

The goal is achieved by the fact that the device for welding fixed pipe joints, which contains a rotary-driven faceplate, a wire feed mechanism, a burner-to-butt setting mechanism, a tracking mechanism, the arc length, a swinging mechanism and a welding torch, is provided with a bracket mounted on the faceplate rotatable, on which the mechanism for tracking the arc length and the oscillation mechanism is mounted, with an axis hinged to the bracket, a threaded rod that is hinged on the faceplate and placed in the threaded hole of the axle, and a backlash of backlash, made in the form of springs, installed with the possibility of contact with the plate on the brackets.

FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one.

The device for welding of non-rotating pipe joints contains a rotary-mounted face plate 1 on which the filler wire feeding mechanism 2, the butt-setting for the joint, the arc length tracking mechanism 4 and the swing mechanism 5, are mounted. The mechanism 3 settings burner on the joint contains a bracket 6, installed with the possibility of rotation on the axis x 7 racks 8, mounted on

0 faceplate 1, tgu 9, fixed with the help of the hinge 10 on the faceplate I and connected with a thread to the axis 11, hingedly mounted in the housing 12 rigidly mounted on the bracket 6, compensators 13 backlashes consisting of springs 14, each of which is located at one end in the cup 15 of the bracket 6, and at the other abutting the faceplate 1, and of the stopper 16. On the bracket 6 there is also a mechanism 4 for tracking the arc length, which regulates

0 arc gap in automatic mode, consisting of a burner 17 mounted on a fixed plate 18 of a gearbox 19 located on a bracket 20, and electric motors 21. In addition, a mechanism 5 is located on the bracket 6 providing an oscillatory movement of the burner 17 across the butt joint in the process welding. It consists of an eccentric 22, a gearbox 23 and an electric motor 24.

The device works as follows.

After installation and fixation of the device over the pipe butt, adjustment and adjustment of the welding mechanisms are performed. To install the burner at the joint, the rotation of the rod 9 through the axis 11 and the body 12 causes the bracket 6 to be moved together with the mechanisms 4 and 5 so that the burner 17 is positioned above the joint or in the center of the joint butt if the welding is done with edge grooves. A permanently fixed position of the burner is maintained by backlash compensators 13, which provide a preloaded state of the threaded connection of the rod 9 and the axis 11, which excludes the possibility of self-unscrewing during operation. The preload force can be adjusted by sample 16.

Upon completion of the setting of the burner 17, the butt includes a drive for rotating the faceplate 1, a drive for tracking the arc length, a drive for the 5 oscillations of the burner, a drive for feeding the wire 2, welding of the pipe butt is performed.

Ensuring the stability of the burner setting at the joint compared with the known devices makes it possible to perform automatic welding of pipes in hard-to-reach places, eliminates the likelihood of rejection, improves the quality of welding.

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Claims (1)

DEVICE FOR WELDING NON-TURNABLE PIPES JOINTS, containing a faceplate with a rotation drive, welding wire feed mechanism, welding torch adjustment mechanism, arc tracking mechanism, oscillation mechanism and welding torch, characterized in that, in order to improve the quality of welding by to ensure stability of the position of the burner relative to the joint, it is equipped with a bracket mounted on the faceplate with the possibility of rotation, on which are mounted a mechanism for tracking the length of the arc and the oscillation mechanism, the axis, pivotally closed eplennoy bracket, rez bovoy rod pivotally mounted on the faceplate and located in the threaded bore axis and compensators backlash made in the form of springs, mounted for contacting with the face plate on the bracket.