EP0576808B1 - Verfahren zum Herstellen von Gitterrosten - Google Patents
Verfahren zum Herstellen von Gitterrosten Download PDFInfo
- Publication number
- EP0576808B1 EP0576808B1 EP19930107504 EP93107504A EP0576808B1 EP 0576808 B1 EP0576808 B1 EP 0576808B1 EP 19930107504 EP19930107504 EP 19930107504 EP 93107504 A EP93107504 A EP 93107504A EP 0576808 B1 EP0576808 B1 EP 0576808B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bars
- support
- grating
- crossbars
- cross bars
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title description 5
- 238000000034 method Methods 0.000 claims description 12
- 239000011295 pitch Substances 0.000 description 24
- 238000003466 welding Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/42—Gratings; Grid-like panels
- E04C2/421—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction
- E04C2/422—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern
- E04C2/423—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern with notches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/08—Making wire network, i.e. wire nets with additional connecting elements or material at crossings
- B21F27/10—Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings
Definitions
- the invention relates to a Process for the production of support and cross bars existing gratings with given dimensions and Divisions.
- German Offenlegungsschrift DE-A-26 17 696 describes a method in which the cross bars are drawn off endlessly from a bundle and in parallel position with a distance corresponding to the cross bar division, and the supporting bars are fed individually to a welding device transversely to the direction of advance of the cross bars.
- the supporting bars are pressure-welded to the cross bars in the welding device, whereby a grating web is formed, which is cut to length by means of scissors or a saw in the finished dimensions of the gratings - if appropriate taking into account the width of any edge bars - corresponding distances.
- the separation point of the grating path coincides with a rod or is so close to a rod that it is no longer possible to use scissors at the separation point provided.
- the grating track must then be subdivided elsewhere, so that a grating with undersize or oversize is obtained, or an intermediate cut is required in the region of the head end of the grating track, ie in connection with the previous cut, which leads to a scrap piece.
- Cutting with a saw is also possible in the plane of a crossbar. However, the crossbar is lost in view of the cutting width of the saw blade, for example 6 mm; this also leads to an unnecessary loss of material and is associated with high saw blade wear.
- the parting plane can shift from grating to grating with respect to the adjacent end bars if, for example, the grating length is not a multiple of the crossbar division. This not only results in different support rod protrusions on both sides of the grate, but also on both sides of the parting plane, ie from grate to grate despite the same grate dimensions. The result of this is that after the grids have been laid, the end bars no longer align with one another as a result of the different support bar projections or end fields of similar mats, and a correspondingly uneven laying pattern is produced.
- the aforementioned disadvantages occur both when welding individual cross bars as well as when welding in pairs the cross bars with the support bars because in in both cases the crossbar division by the respective Intended use is specified as well as the grating dimensions, which is completely independent of the crossbar department after the one to be designed with the gratings Area, i.e. according to the local conditions.
- the grating dimensions can vary depending on the one to be designed Area to be very different, albeit Experience has shown that around 70% of the gratings in a laying plan Grate groups with the same dimensions belong together.
- a support grate is further known from grid-like, interconnected support rods and twisted crossbars, in which the support rods and the crossbars are each arranged parallel to one another and have essentially the same distance from one another.
- the dimensions of the respective outer meshes resulting from the support and cross bars may differ from the distances between the other support and cross bars.
- a grate and a method for producing a grate are also known in which the support and cross bars are arranged so that the outer support and cross bars do not form the outer border , but protrude beyond the respective outer cross or support rod and form protrusions.
- the longitudinal bars are arranged in parallel and at equal intervals.
- the crossbars are distributed using the respectively given permissible minus and / or plus tolerance of the crossbar distances so that the same support rod projection results on each grate on both grate sides and at the same time all crossbars have the same distance.
- the aim is to achieve the same supporting rod protrusions and to keep the number of cross rods as low as possible.
- a disadvantage of this method and the grating itself is that the arrangement of the cross bars not only by the specified crossbar spacing, the the external appearance and functionality of the Grate determined, but essentially also by the Tolerance limits are determined, which are in the range of 5% of the predetermined crossbar spacing. It will therefore in favor of a given, only two The distance between a large number of cross bars from the given optimum for the crossbar spacing modified.
- the invention is based on the problem of a method to create a grating, with which gratings with predetermined dimensions and have divisions made with regard to the arrangement the support or cross bars symmetrical with respect are the central longitudinal or central transverse axis and thus have the same final mesh sizes.
- Procedure for a grating whose width is not equal the sum of an integer multiple of one predetermined pitch of the support rods and the thickness one of the support rods arranged at the edge of the grating is, support rods in the longitudinal direction parallel to each other arranged, cut to a predetermined length, and, either the two support rods between which the Central longitudinal axis, or two symmetrical to Middle longitudinal axis arranged pairs of neighboring Support bars with a spacing different from the pitch arranged while the remaining support rods are symmetrical to the central longitudinal axis with the same pitch are arranged.
- the cross bars can also be arranged.
- the gratings are in all embodiments of the method to the central longitudinal axis and to the central transverse axis symmetrical so that all four corner stitches are the same size are. Thereby lie from the given dimensions deviating meshes either in the area of the central axes, between the central axes and the edge bars or on the edge of the grate.
- the solution to this problem is based on the idea that Support and / or the cross bars using the given Divisions, starting from a central longitudinal axis and / or a central transverse axis or starting from the outer support rods and / or the first and last crossbar with constant division in the longitudinal and transverse directions to be distributed in such a way that based on the given
- the remaining stitches in the dimensions and pitches Area of the central longitudinal axis and / or the central transverse axis lie or remaining stitches adjacent to the outer Support rods and / or to the first and last crossbar or in the area on both sides of the central longitudinal axis and / or the central transverse axis parallel and symmetrical to arise.
- the size of the end panels at the Rostecken can be Adjust fastening techniques for the gratings.
- the Gratings can be, regardless of the pitch of the Support and cross bars immediately to the side and at the beginning and produce edged at the end. There can be no duplication of material by welding a so-called third party arise, which is beneficial to behavior with a possible coating, for example one Galvanizing has an impact.
- a preferred embodiment of the manufacturing method of consisting of supporting and cross bars Gratings with specified dimensions and division dimensions is that according to the invention in a computer the grating length and width as well as the thickness and entered the division dimensions of the supporting bars and the cross bars be, the calculator the number of for a grate required supporting bars and cross bars are determined, the width of the grating not equal to the sum of one integer multiples of the pitch of the support rods and the thickness of one of the arranged at the edge of the grating Support rods is, the calculator either the two Supporting rods, between which the central longitudinal axis runs, or two arranged symmetrically to the central longitudinal axis Pairs of adjacent supporting bars with one of the Pitch different distance, the remaining support rods symmetrical to the central longitudinal axis with the same Pitch and the cross bars symmetrical to the central transverse axis distributed and in which the support rods by control a support rod holder and the cross bars Control a crossbar holder positioned and the Cross bars are welded to the support bars.
- the cross bars can also be arranged.
- the same advantage applies to all process variants, namely remaining and final stitches of equal size with symmetrical Corner areas reached, and the calculation of the
- the number of supporting beams and the number of crossbars and their distribution are limited depend on the number of support and cross bars from the given grate dimensions and To calculate divisions and these in the specified Way to distribute. Because the tolerances when positioning the support rods and the cross rods do not cumulate -
- the support rods or the cross bars are always outgoing from the central longitudinal axis or the central transverse axis or the side support bars or the first and the positioned from the last crossbar - result in precise dimensions Gratings that are easy to put together leave and result in a symmetrical laying pattern.
- the Control of the support bar and cross bar holder and the Grid pull-out if the crossbars are laid step by step are significantly simplified, so that the manufacture of the gratings according to the invention can be carried out more cost-effectively.
- the invention is based on one in the Drawing schematically shown grating explained in more detail.
- the grating consists of support rods 1, 7, 8, which are parallel in the longitudinal direction and cut to a predetermined length, of which the outer support rods 7, 8 form the lateral boundary of the grating.
- the support rods 1,7,8 are aligned with a pitch T 1 from the outer support rods 7,8 towards a central longitudinal axis 3. If the grating width does not correspond to an integer multiple of the pitch T 1 , there are 3 remaining meshes 5 with a width B in the area of the central longitudinal axis.
- the number of supporting bars 1,7,8 for a given grating width and a given pitch T 1 is chosen so that the Width B of the remaining stitches 5 does not become smaller than half the pitch T 1 and not larger than one and a half times the pitch T 1 .
- Cross bars 2, 9, 10 are pressure-welded onto the support bars 1, 7, 8, the first cross bar 9 and the last one Cross bar 10 the front and rear end of the grating form.
- the cross bars 2, 9, 10, starting from a central transverse axis 4, are distributed with the same pitch T 2 , which in addition to the first and last cross bars 9, 10 creates remaining stitches 6, the length L of which corresponds to a pitch T 2 when the grate length is one is an integer multiple of the pitch T 2 . If this is not the case, the length L of the remaining stitches 6 can be greater or smaller than the pitch T 2 , the length L being chosen not less than half the pitch T 2 and not greater than one and a half times the pitch T 2 .
- the corners 11 of the grating all have the same Size and can be the fastening technology for the Adjust grating.
- Another design of the grating can consist in that both the support rods 1,7,8 and the crossbars 2,9,10, starting from the central longitudinal axis 3 and the central transverse axis 4, are distributed with the same pitch T 1 , T 2 . In this case, the remaining stitches result next to the first and the last cross bar 9, 10 as well as next to the outer support bars 7, 8.
- gratings can also be produced in which the support bars 1,7,8 and the cross bars 2,9,10, starting from the outer support bars 7,8 or the first and the last Cross bar 9, 10, to the central longitudinal axis 3 and to the central transverse axis 4 with the same pitch T 1 , T 2 , so that the remaining meshes between the supporting bars 1 and between the cross bars 2 in the area of the central longitudinal axis 3 and the central transverse axis 4 surrender.
- predetermined fixed division dimensions T 1 , T 2 serve to distribute the support rods 1,7,8 and the cross bars 2,9,10, respectively, either starting from the central longitudinal axis 3 and the central transverse axis 4 or , starting from the outer support rods 7,8, or the first and the last crossbar 9,10, so that either in the area of the central longitudinal axis 3 and the central transverse axis 4, or next to the outer support rods 7,8 or the first and the last crossbar 9.10 residual meshes arise which can be larger, equal or smaller than the pitch T 1 , T 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Description
Mit einer Säge ist zwar auch ein Trennen in der Ebene eines Querstabs möglich. Der Querstab geht jedoch angesichts der Schnittbreite des Sägeblatts von beispielsweise 6 mm verloren; auch das führt zu einem unnötigen Materialverlust und ist mit einem hohen Sägeblattverschleiß verbunden. Ein weiterer Nachteil besteht darin, daß sich die Trennebene von Gitterrost zu Gitterrost in bezug auf die einander benachbarten Endstäbe verschieben kann, wenn beispielsweise die Gitterrostlänge nicht ein Vielfaches der Querstabteilung beträgt. Daraus resultieren nicht nur unterschiedliche Tragstabüberstände an beiden Seiten des Gitterrostes, sondern auch beiderseits der Trennebene, d. h. von Gitterrost zu Gitterrost trotz gleichbleibender Rostabmessungen. Das hat zur Folge, daß nach dem Verlegen der Roste die Endstäbe infolge der unterschiedlichen Tragstabüberstände bzw. Endfelder gleichartiger Matten nicht mehr miteinander fluchten und ein entsprechend ungleichmäßiges Verlegungsbild entsteht.
Claims (2)
- Verfahren zum Herstellen von aus Trag- und aus Querstäben bestehenden Gitterrosten mit Restteilungen, wobei sich die Restteilungen aus dem Verhältnis von vorgegebenen Abmessungen und vorgegebenem Teilungsmaß ergeben, dadurch gekennzeichnet, daß die Zahl der Tragstäbe unter Berücksichtigung deren Dicke ermittelt wird, die Tragstäbe symmetrisch zur Mittellängsachse angeordnet werden und die Tragstäbe, zwischen denen die Mittellängsachse verläuft oder zwei Paare von benachbarten Tragstäben so angeordnet werden, daß deren Abstand vom vorgegebenen Teilungsmaß abweicht und die verbleibenden Tragstäbe mit dem vorgegebenen Teilungsmaß angeordnet werden können.
- Verfahren zum Herstellen von aus Trag- und aus Querstäben bestehenden Gitterrosten mit Restteilungen, wobei sich die Restteilungen aus dem Verhältnis von vorgegebenen Abmessungen und vorgegebenem Teilungsmaß ergeben, dadurch gekennzeichnet, daß die Zahl der Querstäbe unter Berücksichtigung deren Dicke ermittelt wird, die Querstäbe symmetrisch zur Mittelquerachse angeordnet werden und die Querstäbe, zwischen denen die Mittelquerachse verläuft, oder zwei Paare von benachbarten Querstäben so angeordnet werden, daß deren Abstand vom vorgegebenen Teilungsmaß abweicht und die verbleibenden Querstäbe mit dem vorgegebenen Teilungsmaß angeordnet werden können.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4221469 | 1992-06-30 | ||
DE19924221469 DE4221469C2 (de) | 1992-06-30 | 1992-06-30 | Verfahren zum Herstellen von Gitterrosten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0576808A1 EP0576808A1 (de) | 1994-01-05 |
EP0576808B1 true EP0576808B1 (de) | 1998-06-10 |
Family
ID=6462165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930107504 Expired - Lifetime EP0576808B1 (de) | 1992-06-30 | 1993-05-08 | Verfahren zum Herstellen von Gitterrosten |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0576808B1 (de) |
DE (1) | DE4221469C2 (de) |
ES (1) | ES2121031T3 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE238115T1 (de) * | 1999-11-05 | 2003-05-15 | Stapelmann Gmbh | Verfahren zur herstellung von aus trag- und aus querstäben gebildeten gitterrosten mit einheitlichen maschengrössen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2124523A1 (de) * | 1971-05-18 | 1972-12-07 | Weland & Söhne GmbH, 2400 Lübeck | Tragrost |
DE2617696C3 (de) * | 1976-04-23 | 1981-10-15 | Stapelmann & Co, 4044 Kaarst | Verfahren zum Herstellen von Gitterrosten |
DE3245179C2 (de) * | 1982-12-07 | 1985-01-17 | Staco Stapelmann GmbH, 4044 Kaarst | Vorrichtung zum Herstellen von Gitterrosten |
-
1992
- 1992-06-30 DE DE19924221469 patent/DE4221469C2/de not_active Expired - Fee Related
-
1993
- 1993-05-08 ES ES93107504T patent/ES2121031T3/es not_active Expired - Lifetime
- 1993-05-08 EP EP19930107504 patent/EP0576808B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE4221469C2 (de) | 2000-03-23 |
ES2121031T3 (es) | 1998-11-16 |
DE4221469A1 (de) | 1994-01-05 |
EP0576808A1 (de) | 1994-01-05 |
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