WO2022189502A1 - Verfahren zur herstellung eines innenrohres für eine stützvorrichtung sowie stützvorrichtung mit einem solchen innenrohr - Google Patents
Verfahren zur herstellung eines innenrohres für eine stützvorrichtung sowie stützvorrichtung mit einem solchen innenrohr Download PDFInfo
- Publication number
- WO2022189502A1 WO2022189502A1 PCT/EP2022/056026 EP2022056026W WO2022189502A1 WO 2022189502 A1 WO2022189502 A1 WO 2022189502A1 EP 2022056026 W EP2022056026 W EP 2022056026W WO 2022189502 A1 WO2022189502 A1 WO 2022189502A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inner tube
- tube
- support device
- outer tube
- thread
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000009415 formwork Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
Definitions
- the present invention relates to a method for producing an inner pipe for a support device for transferring construction loads caused by ceiling formwork or the like onto a stable floor surface, comprising at least one such inner pipe arranged telescopically in an outer pipe with an external thread, which can be rotated with an internal thread on the outer pipe arranged adjusting nut interacts for length adjustment.
- the field of application of the present invention extends to structural engineering applications in which structural loads caused by a ceiling formwork, a precast concrete part, an installation unit to be installed overhead or the like are to be supported against a stable contact area of a building until they are firmly installed. The support device can then be removed again.
- a large number of supporting devices of the type of interest here which are set up adjacent to one another, are used, for example, to support a ceiling for the installation of an intermediate ceiling of a building.
- ceiling supports are also referred to as ceiling supports and are usually adjustable in length in order to be able to support different storey heights depending on the building plan.
- DE 195 03 296 A1 discloses a telescoping support device of the type of interest here.
- a length adjustment takes place here with the aid of a screw drive having an external thread and a nut corresponding thereto.
- the external thread is applied to the inner tube of the telescoping support device and the threaded nut is rotatably mounted on the outer tube. Turning the threaded nut thus causes the inner tube to move in or out with respect to the outer tube for the purpose of adjusting the length.
- the screw drive of this previously known support device has a pitch angle outside of the self-locking function. Due to the structural load, a torque is exerted on the threaded nut, which, however, is absorbed by a frictional connection acting on the threaded nut outside of the thread.
- the frictional connection is formed between a conical surface on the threaded nut and a funnel-shaped area of the outer tube.
- the length of the support device can be continuously adjusted so that additional spacer blocks and wedges for length adjustment can be dispensed with.
- This enables such support devices to be assembled or disassembled quite quickly.
- this advantage of stepless adjustability is associated with the manufacturing problem of providing the inner tube with an external thread over its entire length for interaction with the threaded nut, which generally requires complex machining.
- an extruded light metal tube has usually been used as a semi-finished product.
- claim 1 with regard to a method for efficiently manufacturing an inner pipe provided with an external thread.
- Claim 6 specifies an inner tube produced in this way
- claim 7 relates to a support device comprising the inner tube and claim 17 is aimed at the use of an inner tube for the support device.
- the dependent claims refer back to advantageous developments of the invention.
- the invention includes the procedural teaching that the production of the inner tube for a support device for removing structural loads caused by a ceiling formwork or the like by forming involves the following production steps:
- the inner tube designed according to the invention offers the advantage in terms of manufacturing technology that the outer thread on the inner tube can be manufactured without cutting, in that it is produced before the actual tube profiling as part of a preceding forming step. Since this is based on a sheet metal material, the inner tube can also be designed to be particularly lightweight, which ensures quick and comfortable handling. For example, a support device with a support length of 4 m weighs less than 20 kg in the maximum telescoped state. The support device designed according to the invention can preferably be infinitely adjusted in length ranges between 3 and 5 m and can carry the structural loads of a B and D support according to DIN EN 1065.
- Pre-curved thread arcs are preferably produced in the flat sheet by forming the external thread sections by bending. This facilitates the subsequent bending of the pipe and the external thread sections prefabricated in this way complement each other precisely to form a circumferential overall thread. For this, only the areas between the thread sections have to be bent in order to obtain the desired round tube geometry.
- a round tube geometry is understood to mean a geometry which is essentially round in the enveloping cross-section. Thus, segment-wise deviations from the circular shape can also be included.
- the thread structure is preferably a round thread
- Trapezoidal thread or combinations thereof formed This allows both a high load rating and a wear-resistant screw drive to be achieved.
- the thread sections should be continuous in the longitudinal direction, since the tools cannot be removed from the workpiece during forming, especially bending.
- a forming process can be an advantageously strong Achieve strain hardening of the formed material areas, so that the inner tube produced hereby is given a high level of stability.
- Longitudinal welding or soldering or also beading of the abutting edges can take place after profiling, with a longitudinal weld seam preferably being produced by HF welding or laser welding.
- the minimum feed speeds must be matched to the overall process.
- the inner tube and/or the outer tube is/are produced from a strip steel material in a continuous forming and welding process, with individual tube pieces being produced by cutting to length.
- the supporting device which is preferably made of a steel material, is able to absorb higher loads than comparable continuously adjustable light metal supporting devices.
- the hardening of the material achieved through cold forming - especially in the thread area - also contributes to this.
- the thread can also be produced endlessly without the need for machining.
- a particularly time-efficient production of supporting devices can be realized by using cold forming processes for the thread production and also for the tube profiling.
- the inner tube according to the invention is preferably used in a support device for transferring construction loads caused by a ceiling formwork or the like onto a floor surface, comprising an inner tube arranged telescopically in an outer tube with an outer thread, which interacts with an inner thread of an adjusting nut arranged rotatably on the outer tube for continuous length adjustment.
- the lengths of the inner and outer tubes are matched to one another in such a way that the total telescoped length is between 1.5 and 6 meters, preferably between 3 and 5 meters.
- the inner tube formed from a sheet metal material is provided with a longitudinal welded seam, soldered seam or bead connecting the abutting edges to form a closed profile tube.
- the outer tube formed from a sheet metal material is also provided with a longitudinal weld seam or flange connecting the butt edges to form a reliably closed profile tube in a simple manner.
- Pre-galvanized strip steel with a sheet thickness of between 1.5 and 5 millimeters, in particular between 2 and 4 millimeters, is preferably used as the starting material for the production of the inner tube and/or the outer tube by forming, as the optimum between stability, manufacturability and lightness.
- a slip ring disk arranged in the region of the adjusting nut be used on the end face of the outer tube, which slip ring disk is provided with a plurality of guide pins extending away from it in the axial direction. These guide pins engage in profile sections of the outer tube and in this way prevent the slip ring disk from rotating.
- the slip ring disk serves as a support for the adjusting nut and acts as an end component attached to the outer tube.
- the slip ring disk For the interaction of the slip ring disk with the adjusting nut, the latter consists of a threaded section and a groove section adjoining it axially for rotatable arrangement on the slip ring disk and thus on the outer tube.
- the adjusting nut has a plurality of outwardly extending cams which allow for manual operation or an additional wrench tool.
- Fig. 1 is a perspective view of the invention telescopic
- Fig. 2 is a perspective view of the sheet metal material of the inner tube before
- FIG. 3 is a perspective view of the inner tube after profiling
- FIG. 5 shows a perspective view of a slip ring disk for anti-twist protection
- FIG. 6 is a perspective view of an adjusting nut.
- a support device for transferring construction loads F caused by a ceiling formwork on a floor surface 2 consists essentially of an inner tube 4 arranged telescopically with an outer tube 3, which can be infinitely adjusted in length by means of a screw drive by means of an adjusting nut 5 arranged rotatably on the outer tube 3.
- the support device comprises a head plate 6 attached to the distal end of the inner tube 4 and a base plate 7 arranged on the distal end of the outer tube 3 to rest against the floor formwork 1.
- the inner tube 4 is produced from a sheet metal material that is flat in its initial form, in which a thread structure comprising a plurality of external thread sections 8a-8c is produced by bending.
- the pre-processed sheet metal material is then formed into a round tube geometry.
- the abutting edges that come into contact with each other are finally connected by a longitudinal weld seam 9 to form a closed tubular profile.
- the thread sections 8a to 8c have been formed in a pre-curved manner in the previous manufacturing step, the unprofiled pipe area lying between the thread sections is essentially rounded during profiling to give the round pipe geometry. As a result, the profile cross-section deviates somewhat from a circular geometry.
- FIG. 4 illustrates the cross section of the likewise non-circular outer tube 3, which is also profiled by bending, starting from a flat sheet metal material, and is then longitudinally welded.
- the slip-ring disk 10 shown in FIG. 5 engages with its guide pins 11a to 11c extending axially away from it in the shoulder pockets formed by the profile cross-section of the outer tube 3 (not shown here) in order to provide anti-twist protection for the slip-ring disk.
- the anti-twist protection of the outer tube 3 relative to the inner tube 4 is realized by a profile cross section deviating from the circular shape, which can be designed, for example, in the broadest sense in the shape of a cloverleaf or the like.
- the adjusting nut 12 shown in FIG. 6 consists of a threaded section 13 which is adjoined by a groove section 14 in the axial direction. The groove section 14 interacts with the slip ring disk 10 described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22711547.4A EP4304791A1 (de) | 2021-03-11 | 2022-03-09 | Verfahren zur herstellung eines innenrohres für eine stützvorrichtung sowie stützvorrichtung mit einem solchen innenrohr |
CN202280020723.0A CN116981522A (zh) | 2021-03-11 | 2022-03-09 | 制造用于支撑装置的内管的方法以及具有这种内管的支撑装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021202378.9A DE102021202378A1 (de) | 2021-03-11 | 2021-03-11 | Verfahren zur Herstellung eines Innenrohres für eine Stützvorrichtung sowie Stützvorrichtung mit einem solchen Innenrohr |
DE102021202378.9 | 2021-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022189502A1 true WO2022189502A1 (de) | 2022-09-15 |
Family
ID=80819878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/056026 WO2022189502A1 (de) | 2021-03-11 | 2022-03-09 | Verfahren zur herstellung eines innenrohres für eine stützvorrichtung sowie stützvorrichtung mit einem solchen innenrohr |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4304791A1 (de) |
CN (1) | CN116981522A (de) |
DE (1) | DE102021202378A1 (de) |
WO (1) | WO2022189502A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2205378A1 (de) * | 1972-11-08 | 1974-05-31 | Mannesmann Meer Ag | |
DE19503296A1 (de) | 1995-02-02 | 1996-08-08 | Peri Gmbh | Teleskopartig verlängerbare Stütze |
KR20030087347A (ko) * | 2002-05-08 | 2003-11-14 | (주) 광호기공 | 열교환기 헤더파이프 제조방법과 제조장치 |
WO2015200325A1 (en) * | 2014-06-27 | 2015-12-30 | Ati Properties, Inc. | Flowforming corrosion resistant alloy tubes and tube manufactured thereby |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3445657A1 (de) | 1984-12-14 | 1986-06-26 | Friedr. Ischebeck GmbH, 5828 Ennepetal | Baustuetze |
DE10132253B4 (de) | 2001-07-04 | 2005-10-27 | Doka Industrie Gmbh | Außen- oder Ständerrohr einer axial verstellbaren Vorrichtung sowie höhenverstellbare Stütze |
DE102013206577A1 (de) | 2013-04-12 | 2014-10-16 | Peri Gmbh | Verfahren zur Festigung und Kalibrierung eines Rohrabschnittes |
EP3816367A1 (de) | 2019-10-28 | 2021-05-05 | DOKA GmbH | Schalungsstütze |
-
2021
- 2021-03-11 DE DE102021202378.9A patent/DE102021202378A1/de active Pending
-
2022
- 2022-03-09 WO PCT/EP2022/056026 patent/WO2022189502A1/de active Application Filing
- 2022-03-09 EP EP22711547.4A patent/EP4304791A1/de active Pending
- 2022-03-09 CN CN202280020723.0A patent/CN116981522A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2205378A1 (de) * | 1972-11-08 | 1974-05-31 | Mannesmann Meer Ag | |
DE19503296A1 (de) | 1995-02-02 | 1996-08-08 | Peri Gmbh | Teleskopartig verlängerbare Stütze |
KR20030087347A (ko) * | 2002-05-08 | 2003-11-14 | (주) 광호기공 | 열교환기 헤더파이프 제조방법과 제조장치 |
WO2015200325A1 (en) * | 2014-06-27 | 2015-12-30 | Ati Properties, Inc. | Flowforming corrosion resistant alloy tubes and tube manufactured thereby |
Also Published As
Publication number | Publication date |
---|---|
CN116981522A (zh) | 2023-10-31 |
DE102021202378A1 (de) | 2022-09-15 |
EP4304791A1 (de) | 2024-01-17 |
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