RU2407618C2 - Device to assemble vessel circular butts to be welded - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to device intended for assembling vessel circular butts to welded together and can be used in machine building, ship building, etc. Proposed device comprises tubular bar 7 with brackets 8 and 9. Brackets 8 are locked inside said tubular bar 7 perpendicular its axis, while brackets 9 are locked on the face parallel to its axis. Unclamping driven mechanism is hinged in brackets and consists of a set of reciprocating and turning cylinders connected in series and L-like levers 14, their number corresponding to that of forming sectors 1 and 2. First reciprocating cylinder 10 is fitted in bracket 8 and has its rod connected by L-like levers with turning cylinder 12 fitted in face bracket 9 of tubular rod. Second reciprocating cylinder 11 is arranged on the axle first turning cylinder 12 and has its rod coupled with second turning cylinder 13 articulated with the centre of each forming sector 1. Half of said sectors, next but one, has pins arranged on both sides, while another half has cutouts to make, with mating pins, the steps with tapered holes.

EFFECT: reliable squeezing of backing rind and its locking during welding, ease of removal from welded vessel neck without extra appliances.

4 dwg

Description

The technical solution proposed as an invention relates to auxiliary devices used for assembly for welding, intended for fastening and centering containers made of aluminum alloys, corrosion-resistant steels and can find application in mechanical engineering, shipbuilding, in the space and aviation industries.

From the patent literature known "Internal Centralizer", and.with. No. 569421, В23К 37/053, consisting of a rotary disk and separate segments forming the seam, pivotally mounted on rods, which in turn are pivotally connected to the rotary disk.

The disadvantage of this centralizer is that with a passage diameter smaller than the expandable one, it is difficult to remove it from the tank after welding without additional devices.

It is also known a device for assembling for welding of ring joints of containers, according to patent RU No. 2290290, BK 37/04, which is a collapsible underlay ring consisting of interconnected individual parts.

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 using additional cables and devices.

The closest analogue to the proposed technical solution can be considered “Device for assembling and forming the reverse side of the seam in the unilateral welding of cylindrical products” (AS No. 761215, V23K 37/06). This device contains an even number of forming sectors forming a continuous washer ring and a drive mechanism for expanding them, with half of the forming sectors pivotally connected through one rod with one of the movable rods of the expansion mechanism, and the other half of the forming sectors with the other rod of the expansion mechanism, movable in the direction opposite to the first rod, in addition, the expansion mechanism is provided with parallel articulated links pairwise connecting each of the forming sectors with the drive housing of the mechanism a press, and the rods connecting the forming sectors with the rods of the drive of the expanding mechanism are fixed in the middle of each of the forming sectors.

The disadvantage of this device is that in the folded state it is not possible to remove it from a container with a small starting diameter of the neck.

The objective of the proposed technical solution is to expand technological capabilities and increase productivity by creating an automatically sliding underlay ring, removed after welding from a tank with a small starting diameter of the neck.

The problem is solved in that the device for assembling for welding of the ring joints of the tanks, containing a washer ring, consisting of an even number of forming sectors, the middle of each of which is connected to the drive mechanism for their expansion, is equipped with a tubular rod with brackets, one of which is fixed inside the tubular rod perpendicularly, and others - on the end face parallel to its axis, the expansion drive mechanism is pivotally mounted in brackets and consists of the set consequently connected cylinders for reciprocating and pivoting movement of each of them and L-shaped levers, while the first cylinder for reciprocating movement is mounted in a bracket located perpendicular to the axis of the tubular rod, its rod is connected by a L-shaped lever with a cylinder for pivoting fixed in the end bracket of the tubular rod, the second cylinder for reciprocating movement is mounted on the axis of the first cylinder for rotary movement, and its rod with union of the second cylinder for pivotal movement associated with the middle of each of the sectors forming, through one half of which has pins on two sides, and the other - the recesses forming stage with tapered holes, mating pins.

Technical result: the expansion of technological capabilities and increased productivity is achieved only by a combination of distinctive features, namely, with limited access to the inside of the welded container, for opening ring welds of containers containing the underlay ring for welding before welding and removing the underlay ring after welding , consisting of an even number of forming sectors, the middle of each of which is connected to a drive mechanism for their expansion, equipped with a tubular rod with with brackets, some of which are fixed perpendicularly inside the tubular rod and others on the end parallel to its axis, the expansion drive mechanism is pivotally mounted in brackets and consists of a set of cylinders connected in series to the reciprocating and rotary movement of each of them and G -shaped levers, while the first cylinder for reciprocating movement is mounted in a bracket located perpendicular to the axis of the tubular rod, the current is connected by a L-shaped lever with a cylinder for rotary movement, fixed in the end bracket of the tubular rod, the second cylinder for reciprocating movement is mounted on the axis of the first cylinder for rotary movement, and its rod is connected with the second cylinder for rotational movement, associated with the middle of each of the forming sectors, half of which through one has pins on both sides, and the other cuts forming steps with conical openings, mating pins.

Figure 1 presents a General view of the proposed device, figure 2 is the same at the time of disengagement of the sectors, figure 3 and 4 - the position of the sectors in the folding process.

A device for assembling for welding of ring joints of tanks contains a removable washer ring, consisting of interconnected separate parts - sectors 1 and 2, half of which through one has pins 3 on both sides, and the other cuts 4 forming steps 5 with conical openings 6 mating pins 3.

The device is equipped with a round hollow rod 7 with brackets 8 and 9. The brackets 8 are fixed inside the tubular rod 7 on its generatrix perpendicularly, and the brackets 9 - on the end parallel to the axis of the tubular rod 7.

The expanding mechanism consists of a set of cylinders connected in series corresponding to the number of all sectors 1, 2: for reciprocating 10, 11 and rotary 12, 13 movements of the working body. The cylinder 10 is pivotally mounted in the bracket 8. The cylinder 12 is hinged in the bracket 9. The rod of the cylinder 10 is connected to the cylinder 11 by a L-shaped lever 14.

On the cylinder rod 13 with a rotary movement of the working body is fixed the middle of each of the sectors 1 and 2.

In the operating position, sectors 1 and 2 comprise a washer ring with a diameter of "D", while the pins 3 are located in the conical holes 6.

Ring addition occurs in several stages:

At the first stage, sectors 1 are folded, while the command is given to the cylinders 11, the rods of which fall down, the pins 3 of the sectors 1 come out of the conical holes 6, thereby breaking the connection between sectors 1 and 2.

Then, rotary cylinders 12 are included in the work, on the axes of which cylinders 11 are fixed, the rods of which are connected to cylinders 13, rigidly connected with the middle of sectors 1. The sectors 1 are rotated and fixed in a position parallel to the axis of the hollow rod 7.

Following the rotation of the sectors 1 around the axis of the cylinder 12, the cylinders 10 and 13 are included in the work.

The rod of the cylinder 10, moving reciprocatingly, through the L-shaped lever 14 rotates the cylinders 12, 11 and 13 located on the same axis and interconnected in a plane perpendicular to the axis of the hollow rod 7 by 90 °.

At the same time, a command is given to the cylinders 13 to rotate sectors 1 from a vertical to a horizontal position.

In the second stage, the same process is repeated with sectors 2.

The backing ring is assembled in the reverse order.

The cylinders 10, 11, 12, 13 are driven, for example, by means of hydraulics.

Proposed as an invention, a device for assembling for welding annular joints of containers is characterized by reliable preloading of the underlay ring and fixing of the product at the time of welding, and can be quickly and without additional devices removed from the neck of the welded container.

Claims (1)

A device for assembling for welding annular joints of containers, containing a washer ring, consisting of an even number of forming sectors, the middle of each of which is connected to a drive mechanism for expanding them, characterized in that it is provided with a tubular rod with brackets, one of which is fixed inside the tubular rod perpendicular and others - at the end parallel to its axis, the expander is pivotally mounted in brackets and consists of a follower corresponding to the number of forming sectors of the kit but connected cylinders for reciprocating and pivoting movement of each of them and L-shaped levers, while the first cylinder for reciprocating movement is mounted in a bracket located perpendicular to the axis of the tubular rod, its rod is connected by a L-shaped lever with a cylinder for pivoting fixed in the end bracket of the tubular rod, the second cylinder for reciprocating movement is mounted on the axis of the first cylinder for rotary movement, and its rod is connected to a cylindrical cylinder for pivotal movement associated with the middle of each of the forming sectors, half of which through one has pins on both sides, and the other cuts forming steps with conical holes for mating pins.

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