RU2450876C1 - Shaped tube laying device - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: device comprises accumulating cradle made up of two sidewalls with their bottom sections jointed together, driven winding drums arranged on one of said sidewalls, single-row roller chains with one end enveloping winding drums and another end connected with tensioners arranged atop sidewalls. Chain kinks and jerks are eliminated by providing every said accumulating cradle with driven lever pick-and-place device with rollers consisting of shaft running in bearings fitted on struts, levers with rollers and levers arranged on shaft extensions and pivoted to drives. Every accumulating cradle is furnished with inclined roller guide arranged between aforesaid sidewall and lever-type pick-and-place device located on loading device side. Every tensioner is made up of crossbar running in bearings and provided with central bore to accommodate sleeve and suspension. Said suspension rests on crossbar by one end while its opposite end supports spring and female sleeves. One of the latter is fitted on crossbar body. Two nuts are fitted on suspension threaded free end to adjust spring force.

EFFECT: higher reliability and reduced weight.

4 dwg

Description

The invention relates to the production of welded pipes, and more specifically to a device for laying profile pipes in pipe welding units and finishing lines.

A device is known for silent transportation of long loads (see US Pat. Germany No. 2841918, class B65G 47/74, application. September 27, 78, publ. April 17, 1980). This device contains storage pockets made of two sidewalls connected to each other in the lower part, drive winding drums mounted on shafts in bearing bearings, flexible steel cables, covering winding drums at one end and connected to rollers mounted on storage sides at the other end pockets and loading device in the form of an inclined transfer conveyor with holder-limiter.

The disadvantage of this design of the device is that cables are used for laying pipes, which are stretched unevenly during operation and the device must often be stopped to eliminate sagging of the cable.

Another disadvantage of the device is the rigid fastening of the ends of the cable, which does not allow to evenly distribute the load on each branch and soften the jerk of the branch when it is fully selected, which increases the extension of the branches of the cable.

There is also known a device for laying pipes or rods (see AS USSR No. 156917, class B21B 39/34, application 04.16.62, publ. 01.01.63), containing a storage pocket formed by four chains between the drive part of the hopper and the rack. Each chain is attached at one end to the rack pipe by means of a bolt and spring, and a counterweight is installed at the other end, moreover, the pipe can rotate in its bearings depending on the direction of the chains, and the spring serves to evenly distribute the loads on each chain. The counterweight provides a chain support for the load sprocket; for this purpose, the single sprocket also serves. The load sprockets are mounted on a shaft which is driven in rotation through the drive sprockets and the gearbox from the electric motor. The device contains a receiving rack of rails with emphasis.

The disadvantage of this device design is the use of link chains in it, which damage the pipe surface during operation, since the mass of pipes transported by them of the order of 15 tons exerts a great force on the chain, and when the chain is removed, each link of the chain rotates around the hinge, contacts its surface with the pipe surface, causing her risks or dents. If the pipes are thin-walled or made of soft metal, then such chains cannot be used, which limits the assortment of pipes.

Another drawback is that when lifting and reversing the movement of the chains, the pipes roll over the links of the chains, and when the load on the chain is about 15 tons, the surface of the links of the chains is intensively worn, frequent replacement of chains is required, which reduces the reliability and maintainability of the equipment.

Another disadvantage of the device is that the pipes slide along the rails of the rack to the stop, the pipe hits the stop, the pipe surface is damaged and an increased noise level is created.

The closest in technical essence is the device for laying profile pipes described in A.S. Czechoslovakia No. 255914, class B21B 39/00, application. 03/26/86, publ. 10.31.88 g. This device contains storage pockets made of two sidewalls interconnected in the middle and lower parts by thick-walled pipes and cross-members, drive winding drums located on one of the sidewalls, single-row roller chains lying on thick-walled pipes and one end covering the winding drums, and at the other end connected to tensioning devices located in the upper part of the other sidewalls, and the tensioning device is made in the form of a hairpin cross-member passed into the hole, on The front end of which has a fork-shaped earring, and on the other free end is a spring and two nuts. Moreover, at the spring, one end rests on the cross member, and the other end rests on the nut, which provides the necessary spring force.

A disadvantage of the known design of the device for laying profile pipes is that as the device is filled with pipes, the forces acting on the chain increase many times in areas where single-row roller chains bend around thick-walled pipes. In addition to the tensile-compressive forces, the plate plates of the chains perceive additional bending deformations, the magnitude of which, as we know, (Orlov P.I. 215) is proportional to the third degree of the length of the chain links, and under the action of only tension-compression deformation of the chain links are proportional to the first degree of the length of the chain links. The efforts at the point of bending of the chains increase many times, which leads to intensive wear of the hinges of the chains and to their breakdown, and this reduces the reliability of the device and its maintainability. Such devices require the installation of powerful chains and reinforced metal structures of the sidewalls, which absorb additional forces, which leads to a significant increase in the mass of equipment.

The objective of the present invention is to provide a device to improve reliability and reduce the weight of the equipment.

This object is achieved in that in a device for laying profile pipes containing storage pockets made of two sidewalls connected to each other in the lower part, drive winding drums located on one of the sidewalls, single-row roller chains covering winding drums at one end, and the other end connected to tensioning devices located in the upper part of the other sidewalls, according to the invention, each storage pocket is equipped with a drive lever shifter with rollers located married from the loading side, and an inclined roller wiring located between the sidewall of the storage pocket and the transferring device, and each tensioning device is made in the form of a traverse installed in the bearing bearings and having in the central part an opening in which the sleeve and suspension are installed, one end of which rests on a traverse, and on the other end of the suspension t there is a spring and two bushings covering it, one of the bushings being placed on the beam body, in addition, the free end of the suspension has a thread on which Two nuts are installed to ensure the necessary spring force.

Such a constructive implementation of the device for laying profile pipes allows to increase the reliability of the device, to eliminate kinks in single-row roller chains, since the end of the chain is mounted on a suspension mounted in a traverse, which is mounted in bearing bearings. When changing the direction of the forces acting on the chain branch, when laying the profile pipes, the traverse, on which the suspension is mounted with the fixed end of the roller chain, turns in bearings (self-installs). The chains are always directed in the direction of the force vector, therefore only the compression-tensile forces always act on the chain links and stresses arising in the links from bending the chain when it is bent are excluded, which many times increases the reliability and durability of the chains during operation due to the multiple reduction of the wear of the links in chain joints.

In addition, such a structural embodiment of the tensioning device allows you to adjust the springs to a given load, thereby ensuring a uniform load on the chain, to eliminate jerking of the chains when unloading storage profile pipes.

All this eliminates the installation of powerful chains and reinforced metal structures of the sidewalls for the perception of additional effort, which leads to a significant reduction in the weight of the equipment.

Such a constructive implementation of the device allows laying profile pipes without impacts due to the fact that the rollers on the inclined wiring during rotation form one roller inclined plane along which the profile pipe rolls onto the rollers of single-row chains. As the profile pipes accumulate, the branches of the chains on the device drop and it is completely filled with profile pipes.

To explain the invention, a specific embodiment of the invention is given below with reference to the accompanying drawings, in which:

figure 1 - shows a General view of the device for laying profile pipes;

figure 2 is the same, plan view;

figure 3 is a section aa in figure 1;

figure 4 is a section bB in figure 3.

A device for laying profile pipes contains storage pockets made of two sidewalls 1, 2 connected to each other in the lower part, drive winding drums 3 located on the sidewall 1 mounted on interconnected shafts 4 in the bearing bearings 5, single-row roller chains 6. The chains 6 at one end cover the winding drums 3, and at the other end are connected to tensioning devices 7 located in the upper part of the sidewalls 2. The shaft 4 is connected to the drive 8 at one end and the sensor 9, which determines the position oryadnyh roller chains 6 in the extreme positions. Each storage pocket is equipped with a drive lever shifter 10 with rollers. The drive lever shifter 10 consists of a shaft 11 mounted in bearing bearings 12, mounted on racks 13, levers 14 with rollers 15 and levers 16, and the levers 16 are located at the ends of the shaft 11 and pivotally connected to the actuators 17, made, for example, in the form pneumatic cylinders. A sensor 18 is installed on one of the racks 13 to determine the extreme position of the levers 14 of the lever shifter 10. Each storage pocket is also equipped with an inclined roller wiring 19 located between the sidewall 1 of the storage pocket and the lever shifter 10 with rollers. And the lever shifter 10 is located on the side of the loading device 20, which is made in the form of rollers 21 connected to the drive 22 and mounted on the racks 23. A sensor 24 is installed on one of the racks 23, which determines the position of the pipe on the loading device 20.

Each tensioning device 7 is made in the form of a traverse 25 installed in the bearing bearings 26 and having a hole 27 in the central part in which the sleeve 28 and the suspension 29 are mounted. The suspension 29 rests on the beam 25 at one end and a spring is located on the other free end of the suspension 29 30 and two bushings 31, 32 covering it. The bush 31 is placed on the body of the beam 25. The free end of the suspension 29 has a thread on which two nuts 33 are mounted, providing the necessary spring force 30.

A device for laying profile pipes works as follows.

The profile pipe 34 is fed through the rollers 21 of the loading device 20 to the sensor 24. Then, the levers 14 of the drive lever shifter 10 with the rollers are rotated by a predetermined angle, which is controlled by the sensor 18, and the profile pipe 34 along the rollers 15 mounted on the levers 14 and the rollers of the inclined roller wiring 19 is moved to a single-row roller chain 6. After that, the levers of the shifter 10 are returned to their original position and the process of transferring pipes 34 to the roller chain 6 is repeated. As the profile tubes 34 accumulate on single-row roller chains 6, the drive winding drums 3 begin to rotate and the supply of roller chains 6 located on them opens up, forming pockets where the profile tubes enter. The tension of the single-row roller chains 6 is carried out and controlled by tensioning devices 7, and the extreme positions of the chains 6 are controlled by the sensor 9. When the storage pocket is filled with profile pipes, the sensor 9 is triggered, the pipes are stopped until they are completely unloaded, for example, by a crane. Then, the process of accumulating the profile tubes 34 is repeated.

The proposed device for laying profile pipes in comparison with the known allows to increase the reliability and reduce the weight of the equipment.

Claims (1)

A device for laying profile pipes, containing storage pockets made of two sidewalls connected to each other in the lower part, drive winding drums located on one of the sidewalls, single-row roller chains covering winding drums at one end and connected to tensioning devices at the other end, located in the upper part of the other sidewalls, characterized in that each storage pocket is equipped with a drive lever shifter with rollers located on the loading side, and an inclined roof face wiring located between the sidewall of the storage pocket and the transferr, each tensioning device is made in the form of a traverse installed in bearing bearings and having in the central part an opening in which a sleeve and a suspension are installed, the front end of which rests on the cross-beam, at the other end of the suspension the spring and two bushes covering it are located, one of the bushes being placed on the crosshead housing, and the free end of the suspension has a thread on which two nuts are installed, providing bhodimoe spring force.

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