SU1581544A1 - Arrangement for levelling face edges of shells being assembled - Google Patents

Abstract

The invention relates to welding and can be used in the manufacture of cylindrical shells from shells in chemical and petroleum engineering. The purpose of the invention is to improve the accuracy of alignment of the edges of the shells by ensuring uniform alignment of the edges of the shells of different diameter. The main 25 and an additional 26 leveling rollers are installed on the console frame. The rollers 26 are mounted in vertical guides 35 and spring-loaded with respect to the frame by springs 36. Each roller, including a lever 6 rotatably mounted on the caliper 4, is spring-loaded with respect to the caliper springs 7. The device is equipped with mechanisms for leveling the deviation from the horizontal position of the shell made in the form of mounted on the calipers rolikoopor with the possibility of rotation of the axes 11 with fixed eccentric stops 12, on which are mounted the brackets 13. The axes are kinematically connected toothed -reechnoy transmission with the pointer 19 the position altitude rollers. The rollers 26 are provided with a lifting mechanism made in the form of a hydraulic cylinder fixed on the frame, the rod of which is connected to a slider 28 carrying a wedge, interacting with the rollers 30 installed in the guide pushers 30. Due to this, the assembly and welding of annular butt joints the limits of the permissible norm of the revision error and the different error of the form. 1 hp ff, 4 ill.

Description

ki The rollers 26 are mounted in vertical guides 35 and spring-loaded relative to the frame by springs 36, each roller support including lever 6 mounted on the caliper 4 rotatable, spring-loaded relative to the caliper springs 7. The device is equipped with mechanisms for leveling the deviation from the horizontal position of the shell made in the form of mounted on the supports there are rollers with the possibility of rotation of the axes 11 with fixed eccentric bearings 12, on which the brackets are mounted 13. Axles kin

mathematically connected by a gear rack and pinion with a pointer 19 of the height position of the rollers. The rollers 26 are provided with a mechanism for lifting them, made in the form of a hydraulic cylinder fixed on the frame, the rod of which is connected to a slider 28 carrying a wedge, interacting with the rollers 26 installed in the guide pushers 30. Thanks to this, the assembly and welding of annular joints of shells having different within the permissible standard error of the perimeter and a different form error. 1 hp f-ly, 4 ill.

The invention relates to welding, in particular to devices for alignment; nivaniya end edges of the collected shells, and can be used in the manufacture of cylindrical shells from the shells in the chemical and petroleum engineering.

The purpose of the invention is to improve the accuracy of alignment of the edges of the shells by ensuring uniform alignment of the edges of the shells of different sizes. Meter

FIG. Figure 1 shows schematically the proposed device for leveling the edges of the collected shells; in fig. 2 is the same, side view, in FIG. 3, node I in FIG. one; in fig. 4 - node II in FIG. 2.

The device contains four roller-mounted supports 2 mounted on trolley 1. The trolleys are mounted on the track 3, one of the rails of which is made wedge-shaped. Roller supports include a caliper 4, a horizontal axis 5 fixed on the caliper, and a rotary lever mounted on the axis 5 5. The lever 6 opposite to the axis 5 is spring-loaded with packages of disk springs 7 placed on rods x 8, made in the form of screws and fixed on the caliper 4. Roller supports equipped with a mechanism 9 for leveling the deviation from the horizontal of the position of the shell 10. The mechanism is made in the form of a drive axle 11 mounted in the bearing supports with eccentric mounted cylindrical cams 12 on which the lips the bracket is 13. on

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The top surface of the bracket is fixed to the contacts 14 of the electric signaling device (not shown), which gives a light or sound signal when the bracket 13 is in full contact with the pivoting lever 6. Axles 11 are fixed toothed gear wheels 15 of the axis 11 rotational drive coupled to the mounted in guide bearings 16 by a gear rack 17. The rack is connected to the handle 18 of its movement, measured on a scale of 19, mounted on the carriage 1. When the axis of the shell 10 is horizontal, the rack is shown when ontaktirovanii housings 13 with the swing arm carrying rollers coincide on both rulers carts.

An under- and-out trolley 20 is installed on the rail track, on which a console frame 21 mounted and mounted with the possibility of reciprocating movement is mounted. On the frame 21 an edge alignment mechanism 22, a frame 23 with a replaceable part 24 are placed. Depending on the diameter collected shells has different heights. The mechanism 22 of the alignment of the edges is made in the form of the main 25 and additional 26 leveling rollers.

The additional leveling rollers 26 are provided with a mechanism for their radial movement relative to the frame 23, made in the form of a hydraulic cylinder 27 mounted on the frame, the stem of which is connected to a slider 28 carrying two pairs of wedges 29 interacting kinematically with mounted vertical guides 30 mounted on the guides. traverse 31 with racks 32 rollers 26.

In each pair of rollers 25 and 26, one of them is movable relative to the other by an amount that ensures the difference in diameters of the butt shells evenly around the circumference. The mutual displacement of the rollers in each pair is achieved by screw mechanisms 33 and 34. Additional leveling rollers 26 are installed in the guides 35 and spring-loaded relative to the frame 21 by the springs 36. On the movable column (shown partially in the drawings) is placed welding machine 37. On the trolley 20 mounted retractable end stop 38.

The device works as follows.

To the assembled part of the body of the shells 10, placed on the carts 1, the next carriage is mounted on the track. On the rollers of this cart, a second shell is installed. Before entering the cantilever frame into the shell, each of four pairs of pressure rollers is biased one of them is relatively coaxial with it by means of screw mechanisms 33 and 34 by the value of the difference of the perimeters of the collected shells. The axial force of the end stop 38 moves the carts with the shell all the way to the end of the previously installed one. In this case, the edge alignment mechanism will take up its working position along the length of the housing being assembled. After the lower rollers come into contact with the shell and gradually increase the load, with further lowering of the cantilever frame 21, the side shell joins to a horizontal position, which is controlled by the ruler of the mechanism 9 closest to the junction of the roller. In order to reduce the time and increase the reliability simultaneously with the signal about the achieved horizontal position when the contacts 14 fixed on the housing 13 are short-circuited, the drive for lowering the console frame 21 is switched off.

The specified movement of the shell from the inclined position to the horizontal will occur due to an increase in the load from the weight of the edge alignment mechanism to the proximal to the joint.

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rollers, resulting in additional compression of the disc springs 7 of these rollers and their lowering. Then, turning on the hydraulic cylinder 27, the rollers 26 are displaced upwardly relative to the rollers 25. Under the pressure of all four pairs of rollers to the shells, they will be aligned with their edges taking into account the difference in their perimeters at least four points - in places where the pressure rollers contact the shells . Here, due to the small distance between the upper rollers 26, a predetermined alignment of the edges is ensured along the entire length of the arc between these rollers. Due to the symmetry of the rollers relative to the vertical diametral plane (the longitudinal axis of the device) and the possibility of reciprocating movement of the cantilever frame 21, the alignment of the joined shell with the rest of the assembled body is ensured. The body is welded by the welding machine 37 while the shell is rotating. In this joint operation of the rollers 25 and 26 prevents the deviation from the specified value of the differential diameter of the joined shells.

Thus, the proposed device provides for assembly and welding of annular joints of shells having a perimeter different within the permissible error and a shape error (ellipsivity) that is different within the tolerance, ensuring the specified value of the differential diameter across the entire joint. In addition, the forces forming the shell, directed symmetrically relative to the vertical diametral plane of the shells, and the possibility of a smooth loading of the spring-loaded supports, allow one to obtain a straight axis of the assembled body.

Claims (2)

1. A device for aligning the end edges of the collected shells, comprising a trolley mounted on the base with supports and rollers for the shell and a rack mounted on it with the possibility of reciprocating movement of a cantilever frame with leveling rollers, an end stop characterized in that, in order to increase accurate alignment of the edges of the shells by ensuring uniform alignment of the edges of the shells, different in diameter, the device is equipped with additional leveling rollers with a radial mechanism The rollers are spring-loaded relative to the frame, each main leveling roller is equipped with a screw mechanism for its radial movement, each roller support is made in the form of a carriage and a pivot arm pivotally connected to it, the free end of which is spring-loaded relative to the carriage, each carriage is equipped with a mechanism alignment of the deviation of the shells from the horizontal, made in the form No 22 2S 31 jg j5 15448 drive axles fixed eccentrics on each of them with brackets installed with the ability to interact with the second end of the lever, while on the contact plane of the brackets are installed signal sensors, the frame is installed with the possibility of reciprocating movement along the rack. 2. A device according to claim 1, characterized in that the radial movement mechanism of the additional leveling rollers is made in the form of a hydraulic cylinder, on the stem of which a wedge is fixed, installed with the possibility of interaction with the leveling rollers. FIG. one Fig.Z Fig l