RU2099168C1 - Stand for assembly of units from large-size components - Google Patents

Abstract

FIELD: manufacture of cold-rolled pipes with change of roll passes of cold-reducing pipe mill. SUBSTANCE: stand has bed 1 carrying device 2 for installation of embraced part - roll with pass and device for transfer and putting of embracing parts on the embraced ones, bands. Device for transfer and putting-on of embracing parts is made in the form of cantilevered centering bushings 5 installed on cantilevers bosses 3 of bed 1, on both sides of device 2 and transferred from drive 4. Installed on cantilevered bosses of bed 1 are movable centers 6. Mounted on bed 1 on opposite sides of device 2 are two movable cross-pieces 9 whose upper half carries induction heaters 10 for heating conical part of toothed bands. Bushings 5 have holes 11 for installation of instruments 12 for registration of temperature. EFFECT: higher efficiency. 3 dwg

Description

 The invention relates to the field of production of cold-rolled pipes and relates to the improvement of auxiliary equipment for assembling assemblies from large-sized parts, mainly, gauges of rolls of cold rolling pipe mills.

 The objective of the present invention is to create a stand that provides a reliable connection of the covered part, mainly consisting of two parts of the roll and caliber, covering the parts with gear bandages, as well as reducing wear of the resulting connection.

 The problem is solved in that the stand for assembling nodes from large-sized parts, mainly, gauges of rolls of cold rolling pipe mills, is characterized by the fact that it contains a device placed on the bed for installing the covered part, means for centering it in the form of moving centers, a device for moving and landing female parts on the male, made in the form located on both sides of the device for installing the male parts of the cantilever centering sleeves installed with the possibility of reciprocating movement from the drive, two located on both sides of the device for installing the covered part with the possibility of moving the traverse with inductors fixed to them in the upper half of the coaxial cantilever centering bushings, each of which is made in the form corresponding to the shape of the part being heated, and also control devices for recording the heating temperature of the enclosing parts and controlling it, while the console centering sleeves are made with holes for installation at mentioned control devices.

 Such a constructive implementation of the stand for assembling nodes from large-sized parts, mainly, gauges of rolls of cold rolling mill tubes, ensures the reliability of the connection of the covered part, consisting of two parts of the roll and caliber with covering parts - gear bandages.

 This is achieved due to the multiple sequential batch heating of the conical surfaces of the sector of one and the other bandages to the required temperature, which was made possible by bringing the heating elements - inductors closer to the places where the heated bandages fit onto the neck rolls and caliber, placing them concentrically with conical bandages and performing the inductors in a shape corresponding to the shape of the heated part of the female part.

 The holes in the cantilever centering bushings for installing control instruments that record the heating temperature allow you to quickly measure the heating temperature of the bandages and prevent them from overheating, which is very important for bandage of the gear sectors to prevent tempering teeth from being released.

The invention is illustrated by graphic materials, where: in FIG. 1 shows a General view of the stand for the assembly of nodes from large parts, in FIG. 2
section AA in FIG. 1, in FIG. 3, a bandage with a roll, caliber and inductor is shown enlarged.

 A stand for assembling assemblies from large-sized parts, mainly, gauges of rolls of cold rolling mill tubes, contains a frame 1, a device 2 placed on it for installing a covered roll part with a caliber, and a device for moving the seating of gripping parts on a covered one — bandages having gear sectors with conical outer surfaces on a roll with caliber.

 A device for moving the landing of the covering parts is made in the form of a frame 1 mounted on cantilever tides 3 on both sides of the device 2 and movable centering sleeves 5 moved from the drive 4 of the frame. Movable centers are also installed on the cantilevered frame tides 6. Bandages are installed on the cantilevered centering sleeves 5, made in the form of gear sectors, which are fastened with bolts 7. The actuators 4 of the cantilever centering bushings are made in the form of hydraulic cylinders mounted on the ends of the frame coaxially with the centers 6. On the bed 1, on opposite sides of the device for the part to be covered, two traverses 9 movable from the drives 8 are mounted on which conical sector inductors 10 are mounted in the upper part, which heat the conical part of the gear bandages. The traverse drive is made in the form of hydraulic cylinders. In the cantilever centering bushings, holes 11 are made for installing control devices 12 that record the heating temperature of the bandages. The roll 13 and caliber 14 form two landing necks, on which two braces 15 with gear sectors are mounted.

 Control of heating, mounting and dismounting the connection of the roll with the caliber provides an automatic electronic system (not shown in the drawings).

 In the initial position "B" devices for planting bandages are apart. The roller 13 and caliber 14 are mounted on the device 2 and mounted in the centers 6. On the cantilever centering bushings 5, conical shafts 15 with gear sectors are mounted and bolted 7. The traverses 8 with the inductors located on them, the hydraulic cylinders 8 are moved all the way into the stop bolts 7 of the cantilever the centering sleeve 5. The alternating heating of the conical part of both bands 15 is brought to the required temperature. Due to the fact that the inductors are made in the form of a sector of a hollow truncated cone and are placed concentrically with conical bands, the heating of the latter occurs evenly.

 The temperature is recorded by control devices 12 installed in the holes 11 of the cantilever centering sleeves 5. Then the bandages 15 with gear sectors using hydraulic cylinders 4 moving the centering sleeves 5 are fed to the landing necks of the roll 13 and gauge 14 (position "B"). The bolts 7 are removed and the cantilever centering bushings 5 are simultaneously retracted by means of the hydraulic cylinders 4. The traverses 9 with the inductors 10 installed on them are retracted to the initial position by the hydraulic cylinders 8. The roll 13 is fastened with a caliber 14 at the same time on both sides when cooling the bandages due to interference.

 After installing the roll 13 with caliber 14 in the centers 6, an automatic control system for heating, displacement and control drives for installation and dismantling is turned on. Removing bandages with gear sectors from the assembled roll mounted on the stand is carried out in the reverse order. After removing the bandages, the caliber is replaced and then the cycle repeats.

 The stand described above for assembling assemblies of large-sized parts, mainly, rolls of cold rolling mills, ensures the strength of the connection of the roll with the caliber and the durability of the roll, caliber and gear bandages during their assembly and disassembly due to uniform heating of the bandages to the required temperature, which is determined by the control devices.

 The device also allows you to reduce the time for transshipment, to ensure the mechanization of labor-intensive work to replace the caliber.

Claims (1)

 A stand for assembling assemblies from large-sized parts, mainly gauges of rolls of cold rolling pipe mills, characterized in that it comprises a device placed on the bed for installing the male part, means for centering it in the form of moving centers, a device for moving and fitting female parts on the male, made in the form of cantilever centering sleeves located on both sides of the device for installing the male part, mounted with the possibility of reciprocating about movement from the drive, two located on both sides of the device for installing the covered part with the possibility of reciprocating movement of the beam with the inductors fixed to them in the upper half of the coaxial cantilever centering bushings, each of which is made in the form corresponding to the shape of the heated part of the covering part, as well as control devices for recording the heating temperature of the enclosing parts and controlling it, while the console centering sleeves are made with holes for mounting Application of said control devices.

Images