RU2765412C1 - Rack post - Google Patents

Abstract

FIELD: furniture.

SUBSTANCE: invention relates to general purpose rack posts. It can be used in production of posts. Said post comprises walls with stiffness elements arranged at right angle to each other, angular central stiffening rib and peripheral stiffening ribs. Multiple stiffening elements of each wall of the post are staggered on the entire surface of the wall between the central and adjacent peripheral stiffeners. Stiffness elements form a rigid wall corrugated with multiple stiffness elements made in the wall by means of its plastic deformation and located across and along the wall so that they form a wavy shape in longitudinal and cross sections of the wall. Stiffness elements form protrusions and recesses discretely located along the height and width of each wall of the post. Each stiffener can be located on the outer or inner side of the wall or on both sides of the wall. In cross-section, the wall has a smooth transition into a peripheral stiffening rib, which is rounded and bent inside the post. Angular central stiffening rib is made, preferably, in the form of a rounded bend, smoothly changing into the walls of the post. Stiffening elements are arranged in parallel rows in staggered order with displacement of stiffening elements of one row relative to elements of adjacent row. Stiffness elements are made in form of rounded extrusions in wall metal, note here that rounded concave recess is made in the wall asymmetrically to every extrusion. To connect the post to the rack beams, connection means are made in the post wall along its height, preferably, in the form of lugs located in the internal contour of the post.

EFFECT: reduction of metal consumption of the post without reduction of its rigidity and resistance to loads.

10 cl, 10 dwg

Description

This invention relates to metal racks, in particular to their racks, perceiving the load from the loaded flooring (shelves) of the racks. The invention relates to the form of execution of rack racks, aimed at reducing the metal racks while maintaining their specified rigidity and resistance to bending, compression and torsion. In addition to the indicated purpose, the invention can be used in metal structures for various purposes, having racks, as well as in metal products and their assemblies in the field of construction and engineering.

Known industrial designs of rack racks, each of which is characterized by the implementation of an L-shaped profile of an elongated shape, in the middle of which there is a longitudinal stiffener, and along the edges of the profile there are end stiffeners along the entire length of the profile (RU 99709, 16.09.2016, 06-04. RU 94276, 07/16/2015, 25-01. RU 100576, 11/16/2016, 25-01).

Structural elements of wide application are known - corners containing corrugated walls located at an angle to each other over the entire area of \u200b\u200bthe walls of the corner (Yandex. Corrugated aluminum corners. .2021). These corrugated corners are intended for facing the corner parts of structures, such as thresholds and other elements in the field of construction and mechanical engineering. Such corners are not designed to be used in a vertical position to absorb vertical loads. At the same time, the design of the known corrugated corners cannot be used for the manufacture of shelving racks from them due to the fact that the known corrugated corners do not have stiffening ribs longitudinal along the rack, which take on the main part of the vertically directed load that acts on the rack racks from the load located on the shelves. rack.

Punched structural elements with “non-through” perforation and through perforation are known, which on one side of the wall of the structural element has a collar, and on the other side the wall has a recess (Internet. Punching, threading, Mekons Copyright 2002-2021. Mekons Company). Known constructive puklevanny element (Internet. Corner profile with puklevka for attaching the baseboard WA5/AL105/PAL05. LLC "Ekoteka").

From the prior art in the field of production of racks and their components, rack racks of various designs are known, made of an angle profile with recesses in each wall of the profile and the formation of stiffeners in places of metal inflection (RU 74047 U1, 20.06.2008. RU 60326 U1, 27.012007. RU 111408 U1, 12/20/2011. RU 140452 U1, 05/10/2014. CZ 10443 U1, 09/22/2000. CZ 28786 U1, 11/18/2015. CZ 20162 U1, 11/04/2009).

In the mentioned patent RU 140452 U1, a rack rack made of an angle profile is disclosed with a recess in each wall forming a stiffener, and two stiffeners along the end sections of the walls are made by placing the ends of the walls flush with the bottom of the corresponding recess.

In patent RU 74047 U1, a shelving rack is disclosed, made in the form of a symmetrical metal profile formed by a wall with two longitudinal perforated flat sections and between them a symmetrically oriented inward chute, associated with two walls, each of which contains two flat longitudinal sections, one of which is made perforated, and flanging is made along the free edge of the other. In each wall between the flat sections, a gutter oriented inside the profile is also made, and the dimensions of all the gutters are determined by the limits: 6t≥h>4t and 12t≥1≥8t, where h is the depth of the gutter, l is the width of the gutter, and t is the wall thickness. The perforation in the rack wall is made in the form of wedge-shaped grooves located along the flat sections with equal pitch.

In the patent CZ 10443 U1, a rack post is disclosed, in which two additional intermediate ribs are made in each wall between the central stiffener and the peripheral stiffeners, which are located vertically at the entire height of the rack.

The closest analogue to the claimed technical solution is a rack rack having an angle profile formed by its walls, each of which has a recess, in the contour of the recess in the wall there are many holes located along the wall, each recess forms a stiffener and the bottom of the recess, each end the section of the profile has an additional stiffening rib, which is formed by the flanging of the end of the wall located across the wall, the flanging has a depth h, which is less than the depth h1 of the bottom of the recess, in the place of the bend, the flanging has a rounded part with a radius of curvature that is greater than the thickness of the sheet from which the wall is made , while the rack is installed on a support covering it from below and connected to the support (RU 168437 U1. 02.02.2017 - prototype).

The common features of the prototype and presented in this description of the invention is that each of these technical solutions reveal rack rack, which contains located at right angles to each other walls with stiffeners, an angular central stiffener in the wall connection area and located parallel to the central rib peripheral stiffening rib.

The rack design disclosed in the prototype meets the requirements for rack racks for strength, reliability, stability and safety. However, these requirements are met mainly by increasing the thickness of the rack walls, which is associated with an increase in the metal consumption of the rack and energy consumption for its manufacture. Many technological windows and holes in the walls of the rack weaken the strength of the rack, to increase which it is necessary to increase the thickness of the walls of the rack.

As a result, a significant technical problem in the production of racks is the high cost of metal and energy for the manufacture of rack racks: for bending, stamping the sheet strip of the rack blank and pulling the strip through bending equipment. Moreover, the greater the thickness of the sheet strip of the workpiece, the greater the consumption of metal and electricity is required for the manufacture of a rack from the sheet strip.

Used existing rack racks have excessive metal consumption associated with the excessive thickness of the walls and stiffeners of the rack, which is associated with ensuring the safety of the rack and an increased margin of its strength. Moreover, a decrease in the thickness of the sheet strip of the workpiece and a decrease in the thickness of the walls of the rack is associated with a decrease in the strength of the rack.

In accordance with the stated problem - the technical problem to be solved of the invention is to reduce the consumption of metal and electricity for the manufacture of rack racks from sheet strip without reducing the strength of the rack.

The technical result of the invention is to reduce the metal consumption of the rack without reducing its rigidity and resistance to loads, as well as reducing the energy intensity of the production process of rack racks.

The technical result is obtained by a rack rack containing walls with stiffeners located at right angles to each other, an angular central stiffener in the wall connection zone and peripheral stiffeners located parallel to the central rib, characterized in that a plurality of stiffeners of each rack wall are arranged in a checkerboard pattern on the entire surface of the wall between the central and adjacent peripheral ribs, the stiffening elements form a rigid wall corrugated by a plurality of stiffening elements made in the wall by plastic deformation and located across and along the wall so that they form a wall in the longitudinal and transverse sections wavy shape.

A plurality of stiffeners form protrusions and recesses discretely located along the height and width of each rack wall.

Each stiffening element is located on the outer side of the wall and extends outward from the wall, which is made ribbed-convex on this side, and the inner side of the wall is made flat with a plurality of recesses concave in it.

Each stiffening element is located on the inner side of the wall and extends to the inner side from the wall, which is made ribbed-convex on this side, and the outer side of the wall is made flat with a plurality of concave recesses.

The stiffening elements are located on the inner and outer sides of each wall, they extend to the inner and outer sides from the wall, which is made ribbed-convex on its two sides, and between the convex parts of the stiffening ribs there are flat sections of the wall and concave recesses.

In cross section, the wall has a smooth transition into the peripheral stiffening rib, which is made rounded, bent inside the rack.

The angular central stiffening rib is made, preferably, in the form of a rounded bend, smoothly passing into the walls of the rack.

Stiffening elements of each wall are located across and along the wall in parallel rows in a checkerboard pattern with displacement of the stiffening elements of one row relative to the stiffening elements of the row adjacent to it.

The rack wall has a plurality of stiffening elements of the same shape, preferably in the form of rounded indentations in the wall metal, while on the reverse side of the wall, asymmetrically to each indentation in the wall, a rounded concave recess is made, having a shape similar to the indentation.

To connect the rack to the beams of the rack in the wall of the rack along its height, connection means are made, preferably in the form of lugs located in the inner contour of the rack.

In FIG. 1 shows a rack with corrugated walls, a frontal view of the rack.

In FIG. 2 - view A in Fig. one.

In FIG. 3 is a cross section of the B-B rack in FIG. 2.

In FIG. 4 is a fragment of the cross-section of the post wall in an enlarged view, the corrugations extend outward from the rectilinear plane of the post wall.

In FIG. 5 is a fragment of the cross-section of the post wall in an enlarged view, the corrugations extend inwardly from the rectilinear plane of the post wall.

In FIG. 6 is a fragment of the cross section of the post wall in an enlarged view, the corrugations extend to the outside and to the inside from the rectilinear part of the post wall.

In FIG. 7 is a fragment of the longitudinal section of the post wall in an enlarged view, the corrugations extend outward from the rectilinear plane of the post wall.

In FIG. 8 is a fragment of the longitudinal section of the post wall in an enlarged view, the corrugations extend inwardly from the rectilinear plane of the post wall.

In FIG. 9 is a fragment of the longitudinal section of the post wall in an enlarged view, the corrugations extend to the outer and inner sides from the rectilinear part of the post wall.

In FIG. 10 - rack development - a metal strip of a rack blank with corrugations of various shapes (diagram).

The rack of the rack contains located at right angles to each other walls 1 and 2 (Fig. 3) with stiffeners, an angular central stiffener 3 in the wall connection zone and peripheral stiffeners 4 and 5 located parallel to the central rib. The plurality of stiffeners 6 of each rack wall are staggered on the entire wall surface between the central and adjacent peripheral stiffeners. Each wall has curved sections and flat sections 7 and 8 (Fig. 4-9).

Stiffening elements 6 form a rigid wall of the rack, corrugated by a plurality of stiffening elements (Fig. 1, 2), made in the wall by plastic deformation and arranged in rows across and along the wall so that they form a wavy shape in the longitudinal and transverse sections of the wall ( Fig. 3). A plurality of stiffeners 6 form protrusions and recesses discretely located on one or both sides of the wall along the height and width of each rack wall.

In one version of the rack, each stiffener 6 (Fig. 4) is located on the outer side of the wall 1 and extends outward from the wall, which on this side is made ribbed-convex, and the inner side of the wall is made flat with a plurality of recesses 9 concave in it, between which are flat parts 8 of the wall.

In another version, each stiffening element is located on the inner side of the wall 1 (Fig. 5) and extends to the inner side from the wall, which on this side is made ribbed-convex, and the outer side of the wall is made flat with a plurality of concave recesses, between which there are flat parts 7 walls.

In the third version (Fig. 6), the stiffening elements 6 are located on the inner and outer sides of the wall, they extend to the inner and outer sides of the wall, which is ribbed-convex on both sides, and between the convex parts of the stiffening ribs there are flat sections 7 and 8 walls and concave recesses 9.

In cross section, the wall of the rack (Fig. 3) has a smooth transition into the peripheral stiffener 4, which is made rounded, bent inside the rack. The angular central stiffening rib 3 is made, preferably, in the form of a rounded bend, smoothly passing into the walls of the rack.

The stiffeners 6 of each wall are located across and along the wall in parallel rows in a checkerboard pattern with the offset of the stiffeners of one row relative to the stiffeners of the row adjacent to it. Each rack wall has a plurality of stiffening elements of the same shape, preferably in the form of rounded indentations in the wall metal, while on the reverse side of the wall, asymmetrically to each indentation in the wall, a rounded concave recess 9 is made, having a shape similar to the indentation.

To connect the rack with the beams of the rack in the wall of the rack along its height, connection means 10 are made, preferably in the form of lugs located in the inner contour of the rack.

The rack rack is an elongated seamless element having a sectional shape of a corner (Fig. 3), the walls 1 and 2 of which are located at a right angle α, in other versions of the rack, this angle can be within α=90-120°.

Peripheral stiffeners 4 and 5 in cross section are made along the radius Rp of the body of revolution. The central stiffener 3 is made along the radius Rc of the body of revolution, which can be greater than or equal to Rp. Peripheral stiffening ribs 4 and 5 are bent inside the rack corner.

The stand is made of a steel strip having a thickness t in the range t=0.5-3.0 mm (Fig. 3). The width f between the central stiffener 3 and each peripheral stiffener is in the range f=20-70 mm. Each transition line between the stiffener 6 and the rack wall is made along the radius r of the body of revolution, which depends on the thickness t of the rack wall and is within r=t(1.0-2.0). The specified limits of values correspond to the conditions of the given resistance of the rack to bending, compression and torsion. In this regard, in the manufacture of the rack, the values of the parameters t, f, α, Rc, Rp and r provide a wide range of standard sizes of one rack design between the minimum and maximum values of the parameters associated with the bearing capacity of the rack.

The angle α between the walls of the rack is selected from the conditions of the configuration of the rack, the thickness t of the walls of the rack and the width f between the central stiffener 3 and each peripheral stiffener 4 and 5 are related to the bearing capacity of the rack.

Stiffening elements 6 are made in the walls of the rack to provide a regulated margin of safety of the rack, which makes it possible to reduce the metal consumption of the rack by reducing the thickness t of the walls 1 and 2 of the rack. Essentially, the rack walls are made corrugated, formed by stiffening ribs 6 in its multitude. The corrugations are located on the entire area of each wall of the rack - between the central stiffener 3 and each peripheral stiffener adjacent to it.

Each stiffening element 6 can have the form of local protrusions in the metal walls of the rack (bulges), which on the frontal projection of the wall can have the shape of a circle, oval, ellipse, square, elongated rectangle, corner, cross and other shapes that are schematically shown in Fig. 10. In this case, each longitudinal axis of the elongated stiffeners can be located parallel to the longitudinal axis of the rack, at an angle to this axis, or across the axis of the rack. Each stiffening element can be located along the entire length of the rack and, together with adjacent similar elements, reinforce the wall of the rack.

Peripheral stiffening ribs 4 and 5 (Fig. 3) are made on the end parts of the walls 1 and 2, preferably in the form of bends rounded along the radius Rn inside the rack of the ends of the walls 1 and 2. The angular central stiffening rib 3 is made, preferably, in the form of a rounded in radius Rc of the bend, smoothly passing into the walls 1 and 2 of the rack. In this case, the stiffening ribs 4, 5 and 3 can have any shape, including bends along the mentioned radii of the bodies of revolution.

Stiffening elements 6 of the walls of the rack, forming corrugations, are parallel, longitudinal, inclined bulges on the sides of the walls, between which recesses are made. Each wall has at least several transverse stiffeners 6 located across the rack and a plurality of stiffeners longitudinally located along the wall along its entire height, while the stiffening elements are located relative to the transverse stiffeners and to each other in a checkerboard pattern ( Fig. 1).

The stiffening elements 6 of each rack wall are made of the same geometric configuration, preferably in the form of rounded bulges, while between the stiffening elements 6 there are horizontally and vertically rows of recesses, each of which also has the same geometric configuration in the presented rack execution example.

In the corrugated walls 1 and 2 can be made means for fastening to the rack rack beams (beams are not shown). The fastening means may be eyelets 10 (fig. 3 shows one eyelet). Lugs 10 can be provided in both walls 1 and 2 of the column (the second lug is not shown). Eyelets can be made in at least one wall of the rack. The means for fastening the beams to the racks can also be through holes (not shown) made in the walls 1 and 2 of the rack for bolts of connection with rack beam racks.

Eyelets and holes can be made with a step between them along the entire height of the rack. Fastening means such as eyelets are designed to accommodate the hooks of the rack beams (the hooks are not shown). The means of connection can be made both in the process of manufacturing the racks and in the process of assembling the racks at the place of use of the racks. In the latter case, rack racks are made without means of connecting rack beams to them.

In rack racks manufactured at the factory without the above connection means, at the rack assembly site, the required number of means for connecting the rack to the rack beams is performed in accordance with the number of rack shelves. As a result of such an assembly, the need to make a plurality of holes along the height of the rack in the walls of the rack is eliminated, which weaken the strength of the rack and, as a rule, are not used during the operation of the rack.

The punched set of holes in the racks, which are not used during the operation of the rack, require thickening of the walls of the rack to ensure a given strength, which is associated with an increase in the consumption of metal and electricity for the manufacture of racks with many holes in them.

The lower end of each rack is put on the thrust bearing 12 (Fig. 1), which excludes damage to the floor on which the rack racks are installed, in the upper part of the rack, a facing element 13 is put on its upper end, preventing contact of the installer's hand and the user of the rack with the edges of the walls of the rack. A thrust bearing 12 can be used as a facing element. The thrust bearing 12 and the facing element 13 are shown conventionally. In other versions, the rack rack can be made without a thrust bearing and a facing element.

A method for manufacturing a rack rack is provided, which is characterized in that the metal strip 14 (Fig. 10) is pulled through the bending equipment and a central stiffening rib 3 (Fig. 3), as well as two peripheral stiffening ribs 4 and 5, is made from the strip during its drawing. .

The differences of the method lie in the fact that, first, on the workpiece - a metal strip 14 - by plastic deformation of the strip, a plurality of stiffening elements 6 are made, forming corrugations 15 located on smooth tracks 16 and 17 of the strip 14. In this case, the tracks 16 and 17 are located to the right and left of axis 18 of symmetry of the strip 14 so that the third, non-corrugated smooth track 19 is located in the center of the strip, and two smooth tracks 20 are located along the edges of the strip 14 (one track 20 is shown in Fig. 10).

Further, after the workpiece strip 14 is corrugated, a central stiffening rib 3 (Fig. 3) and two peripheral stiffening ribs 4 and 5 are made by pulling the strip 14 through the bending equipment.

The shelving rack works as follows. Static loads of compression of the rack in the longitudinal direction along the longitudinal axis of the rack from the action of the load located on the shelves of the rack act on each rack of the rack during its operation. Each column of the rack in the course of its operation is also affected by dynamic loads of compression of the rack in the longitudinal direction along the longitudinal axis of the rack from the action of the load in the process of its loading onto the shelves of the rack. At the same time, bending loads acting across the rack and crushing loads of the rack walls acting on the rack from the rack beams through the means of attaching the rack beams to the racks also act on each rack rack. In combination with these loads, each rack rack is subject to torsion loads that can occur around the longitudinal axis of the rack. These loads can act on the rack at the same time and when the total load exceeds the limits of strength and stability of the rack, the rack breaks and the rack collapses.

The strength and stability of the post, among other factors, mainly depends on the thickness t of the steel strip from which the post is made, as well as on the shape of the post in its cross section.

If the indicated loads act on a rack having corrugations and a reduced thickness t of each wall (compared to the wall thickness of a standard rack), then the indicated loads during the operation of the rack are redistributed between the walls 1 and 2 of the rack and its longitudinal stiffeners 3,4,5 more evenly through the stiffeners 6, which reduces the stress concentration on the walls and stiffeners of the racks. This leads to an increase in the resistance of the rack to the specified loads acting on it during operation.

It has been established that the resistance of the corrugated walls of the rack is higher than the resistance of non-corrugated (smooth) walls of the rack. As a result of increasing the resistance of the corrugated walls 1 and 2 to loads, the thickness t of the steel strip blank from which the rack is made is reduced, and, accordingly, the metal consumption of the rack is reduced. At the same time, the energy intensity of the process of bending, stamping and broach of the workpiece, as well as trimming the rack, is reduced.

Claims (10)

1. Rack rack, containing located at right angles to each other walls with stiffeners, an angular central stiffener in the wall connection area and peripheral stiffeners located parallel to the central rib, characterized in that a plurality of stiffeners of each rack wall are located in a checkerboard pattern on the entire surface of the wall between the central and adjacent peripheral ribs, the stiffening elements form a rigid wall corrugated by a plurality of stiffening elements made in the wall by plastic deformation and located across and along the wall so that they form a wavy shape in the longitudinal and transverse sections of the wall form. 2. Rack rack according to claim 1, characterized in that a plurality of stiffeners form projections and recesses discretely located along the height and width of each wall of the rack. 3. Rack rack according to claim 1, characterized in that each stiffening element is located on the outer side of the wall and extends outward from the wall, which is made ribbed-convex on this side, and the inner side of the wall is made flat with a plurality of recesses concave in it . 4. Rack rack p. 1, characterized in that each stiffening element is located on the inner side of the wall and extends to the inner side of the wall, which on this side is made ribbed-convex, and the outer side of the wall is made flat with many concave recesses. 5. Rack rack p. 1, characterized in that the stiffening elements are located on the inner and outer sides of each wall, they extend to the inner and outer sides of the wall, which on both sides is made ribbed-convex, and between the convex parts of the ribs are located flat wall sections and concave recesses. 6. Rack rack p. 1, characterized in that the cross section of the wall has a smooth transition into the peripheral rib, which is made rounded, bent inside the rack. 7. Rack rack p. 1, characterized in that the angular central rib is made, preferably, in the form of a rounded bend, smoothly passing into the walls of the rack. 8. Rack rack p. 1, characterized in that the stiffeners of each wall are located across and along the rack in parallel rows in a checkerboard pattern with the offset of the stiffeners of one row relative to the stiffeners of the row adjacent to it. 9. The rack of the rack of claim 1, characterized in that the wall of the rack has a plurality of stiffening elements of the same shape, preferably in the form of rounded extrusions in the metal of the wall, while on the reverse side of the wall, asymmetrically to each extrusion in the wall, a rounded concave recess is made, having a similar extrusion shape. 10. Rack rack p. 1, characterized in that for connecting the rack with rack beams in the wall of the rack along its height, connection means are made, preferably in the form of lugs located in the inner contour of the rack.

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