RU120597U1 - EXTENDABLE SUPPORT RING FOR ASSEMBLING RING JOINS OF TANKS UNDER FRICTION WELDING WITH MIXING - Google Patents

Abstract

Expanding support ring for the assembly of annular joints of tanks for friction welding with stirring, consisting of individual sectors interconnected with the possibility of adjusting the mounting gap, the mating parts of which are made at an angle to the plane of the support ring and are connected using conical tightening bolts, characterized in that in of the mating parts of the sectors, additional counter-directed conical holes and perpendicular mating surfaces of the stepped holes are formed, equipped with tightening bolts with a head, having a diameter 1.5-2 times the diameter of the leg, placed in a stepped hole of a larger size with the possibility of longitudinal movement of the mating parts sectors between each other, and each of the sectors is provided with lugs installed at the ends of the mating parts of the sectors, and a sliding mechanism fixed in the lugs.

Description

The utility model proposed for protection can be used in rocket science, aircraft manufacturing, shipbuilding and other engineering industries and for joining sheet structures such as tanks, panels, profiles, as well as units and assemblies from various structural materials, including non-welded and limited welded by fusion welding.

From the patent literature there is known a backing ring that can be disassembled into separate parts and removed from the tank after welding (US patent No. 6247634, B23K 20/12).

A device for assembling for welding of ring joints of containers is known, comprising a collapsible washer ring, consisting of individual parts connected with each other without gaps by conical bolt connections, and the contact surface of individual parts made at an angle to the plane of the ring (RF patent No. 2290290 B23K 37/04).

This device is pre-assembled to obtain the desired diameter and disassembled after welding inside the container, therefore, it partially solves the issue of removing the backing ring from the item being welded, but it is also not technological, because after disassembling the device inside the tank, its individual parts are removed with the help of additional cables and devices.

The objective of the proposed technical solution is the expansion of technological capabilities, by ensuring the preliminary assembly of the washer ring outside the welding stand with the subsequent installation of the assembled ring at the junction of the welded cylindrical parts and its expansion to a predetermined diameter.

The problem is solved in that in the expandable support ring for assembling the ring joints of the containers for friction welding with stirring, consisting of interconnected with the possibility of adjusting the mounting gap of individual sectors, the mating parts of which are made at an angle to the plane of the support ring, and are connected using conical tightening bolts, in the mating parts of the sectors additional counter-directed conical holes and perpendicular mating surfaces of the step hole are formed shaped, equipped with tightening bolts with a head having a diameter 1.5-2 times the diameter of the legs, placed in a larger step hole with the possibility of longitudinal movement of the mating parts of the sectors among themselves, each of the sectors is equipped with eyelets mounted on the ends of the mating parts of the sectors, and a sliding mechanism fixed in the eyes.

Figure 1 shows a General view of the proposed expanding support ring for assembly for friction welding with stirring of the annular joints of the tanks, Figure 2 - connection of the mating parts using tightened bolts with a head, Figure 3 - connection of the mating parts using conical tightening bolts, Fig .4 - view A of figure 1.

The expanding support ring for assembly for friction welding with stirring of the annular joints of the tanks consists of interconnected with the possibility of adjusting the mounting gap of the individual sectors 1.

The mating parts 2 of sectors 1 are made at an angle to the plane of the support ring and are connected using conical tightening bolts 3.

In the mating parts 2 of sectors 1, additional conical holes 4 are formed, directed counter to the existing 3, under the conical tightening bolts 3.

In the mating parts of 2 sectors 1, perpendicular mating surfaces of a step-shaped hole 5 are formed, equipped with tightening bolts 6 with a head 7 and nuts 8. The head 7 has a diameter 1.5-2 times the diameter of the legs.

A bolt 6 with a head 7 is placed in a stepped hole 5 of a larger size with the possibility of longitudinal movement of the mating parts of the sectors among themselves.

Each of the sectors 1 is equipped with eyes 9 mounted on the ends of the mating parts 2 of sectors 1, and a sliding mechanism 10 fixed in the eyes 9.

To reduce weight, each sector of the ring in the middle can have an I-section.

The expanding support ring for assembly for friction welding with mixing of the annular joints of the containers works as follows:

Previously, outside the welding stand, the ring is assembled in a compressed position, for which the sectors 1 along the mating planes 2 are connected to the ring using the tightening bolts 6 through holes 5.

Then, a sliding mechanism 10 is installed in the eyes 9 and adjusted so that the outer diameter of the ring is less than the inner diameter of the parts to be welded. The assembled ring is installed under the joint of the parts to be welded, with the help of a sliding mechanism 10, the sectors of the ring 1 are pushed to the nominal diameter and finally fixed relative to each other by conical tightening bolts 3, fixed in conical openings 4 opposite to each other.

The proposed device was tested during welding of closed annular and experimental sections of the fuel tank with a diameter of 2400 mm from alloy AMg6.

No defects were found in the weld. Their quality is confirmed by x-ray, ultrasound and metallographic control. The specific strength of the welds exceeds the strength of the base material.

Claims (1)

Expanding support ring for assembling the ring joints of containers for friction welding with stirring, consisting of interconnected with the possibility of adjusting the mounting gap of individual sectors, the mating parts of which are made at an angle to the plane of the support ring and are connected using conical tightening bolts, characterized in that the mating parts of the sectors are formed additional counter-directed conical holes and perpendicular to the surface of the mating holes step-shaped, equipped with e tightening bolts with a headrest having a diameter 1.5-2 times the diameter of the legs, placed in a stepped hole of a larger size with the possibility of longitudinal movement of the mating parts of the sectors between each other, each of the sectors equipped with eyelets mounted on the ends of the mating parts of the sectors , and a sliding mechanism fixed in the eyes.