DE800783C - Electromagnetic dowel fixation in the manufacture of concrete bodies - Google Patents
Electromagnetic dowel fixation in the manufacture of concrete bodiesInfo
- Publication number
- DE800783C DE800783C DE1948P0000446 DEP0000446D DE800783C DE 800783 C DE800783 C DE 800783C DE 1948P0000446 DE1948P0000446 DE 1948P0000446 DE P0000446 D DEP0000446 D DE P0000446D DE 800783 C DE800783 C DE 800783C
- Authority
- DE
- Germany
- Prior art keywords
- formwork
- dowel
- steel
- electromagnetic
- manufacture
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
- E04B1/4121—Elements with sockets with internal threads or non-adjustable captive nuts
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
Oft ist die Einbetonierung von Stahldübeln bei Stahlbetonkörpern aller Art zweckmäßig. So werden z. B. bei Spannbetonschwellen solche verwendet zur Aufnahme der Verschraubung von Schiene und Unterlagsplatte. Die Dübel müssen meist mit großer Genauigkeit im Betonkörper sitzen, was bisher durch anfängliche Verschraubung vier Dübel finit der Stahlschalung erreicht wurde. Es ist sofort ersichtlich, daß dieses Einbauverfahren der Dübel beim Gebrauch großer Spannbetten erhebliche Schwierigkeiten bereitet, insbesondere wenn die Dübel am Boden der Schalung sitzen und selbst verhältnismäßig kurz sind. Die Verschraubung der Dübel mit der Stalilschallxiig zur Erreichung eifies genauen Sitzes muß von unten her erfolgen und muß auch von unten her wieder gelöst werden. Dies verlangt aber die Anordnung besonderer Gänge unter dem Spannbett, die so groß sein müssen, daß ein Mann hineinkriechen und dort arbeiten kann.Often, the setting in concrete of steel dowels in reinforced concrete bodies is everyone Kind of functional. So z. B. in prestressed concrete sleepers such used for recording the screw connection of the rail and the base plate. The dowels usually have to be large Accuracy sit in the concrete body, what so far by initial screwing four Dowel finite the steel formwork was achieved. It is immediately apparent that this Installation method of the dowels when using large clamping beds considerable difficulties prepares, especially when the dowels sit on the bottom of the formwork and even proportionally are short. The screwing of the dowels with the Stalilschallxiig to achieve eifies exact fit must be done from below and must also be released from below will. But this requires the arrangement of special aisles under the bed, which must be big enough for a man to crawl in and work there.
Wesentlich einfacher ist es, in solchen Fällen aiif eine Verschraubung zu verzichten und die sichere Festhaltung des Dübels an der Schalung durch magnetische Kraftwirkung zu erzielen. hierin liegt das Wesen der Erfindung.In such cases it is much easier to use a screw connection to do without and the secure holding of the anchor on the formwork by magnetic To achieve force effect. this is the essence of the invention.
Die Wirkungsweise wird in folgendem Beispiel erläutert: Abb. i zeigt den Dübel a im Betonkörper fest einbetoniert. Der Dübel besitzt eine Gewindehoiirung b.The mode of operation is explained in the following example: Fig. I shows the dowel a firmly concreted in the concrete body. The dowel has a threaded hole b.
"\lili. ? zeigt die Schraubfüllung c, die genau in die Gewindebohrung b paßt. Die Schraubfiillung c ist beispielsweise mit einem Aussparungsteller d und dem "Lentrierkegel e zu einem festen Stück vereinigt. Die Seliraubfü llung c wird zunächst ganz in den Dübel a eingedreht."\ lili.? shows the screw filling c, which is exactly in the threaded hole b fits. The screw filling c is for example with a recess plate d and the "Lentrierkegel e united to a solid piece. The Seliraubfü lling c is first screwed completely into the dowel a.
Wie Abb.3 zeigt, wird nuninehr der Gesamtkörper mit der Zentrierspitze c genau auf eine gleiche Aussparung f der Schalung g gestellt. Dann wird der Elektromagnet h unter Strom gesetzt, anfangs nur gering für die Dübelfixierung auf der Schalung ;, dann beim Einbringen und Rütteln (los Betolis mit größter Kraftwirkung. Der 1?lelctroniagliet lt ist daher in seiner Kraftwirkung so zu Beinessen, daß der Dübel unverrückbar sitzt gegenüber all den Kräften, die beim Einbringen und Rütteln des Betons auf den Dübel ausgeübt werden können. Nach Beendigung des Rüttelns wird der Strom wieder ausgeschaltet. Bei der Entsclialung des Betonkörpers entstehen nicht die geringsten \\'iderstsinde. Die Schraubfüllung 1<ißt sich leicht herausschrauben. Der Dübel bleibt im Hetonkörper.As Fig.3 shows, the entire body with the centering point is now c placed exactly on the same recess f in the formwork g. Then the electromagnet h electrified, initially only slightly for fixing the dowels to the formwork ;, then when introducing and shaking (los Betolis with the greatest force. The 1? lelctroniagliet According to it, the force of the leg eats in such a way that the dowel cannot be moved sits against all the forces that occur when pouring and shaking the concrete the dowel can be exercised. When the shaking is finished, the current will be restored switched off. Not the slightest occurs when the concrete body is desclialed \\ 'iderstsinde. The screw filling 1 <can easily be unscrewed. The dowel remains in the hetone body.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1948P0000446 DE800783C (en) | 1948-10-02 | 1948-10-02 | Electromagnetic dowel fixation in the manufacture of concrete bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1948P0000446 DE800783C (en) | 1948-10-02 | 1948-10-02 | Electromagnetic dowel fixation in the manufacture of concrete bodies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE800783C true DE800783C (en) | 1950-12-07 |
Family
ID=577649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1948P0000446 Expired DE800783C (en) | 1948-10-02 | 1948-10-02 | Electromagnetic dowel fixation in the manufacture of concrete bodies |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE800783C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19746111A1 (en) * | 1997-02-21 | 1998-09-03 | Hochtief Ag Hoch Tiefbauten | Multi-section formwork body for manufacturing cut-back recesses such as anchor holes in concrete |
-
1948
- 1948-10-02 DE DE1948P0000446 patent/DE800783C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19746111A1 (en) * | 1997-02-21 | 1998-09-03 | Hochtief Ag Hoch Tiefbauten | Multi-section formwork body for manufacturing cut-back recesses such as anchor holes in concrete |
| DE19746111C2 (en) * | 1997-02-21 | 1999-02-04 | Hochtief Ag Hoch Tiefbauten | Multi-part formwork body for producing undercut recesses, especially anchor holes, in concrete |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE800783C (en) | Electromagnetic dowel fixation in the manufacture of concrete bodies | |
| DE2421985A1 (en) | Orificed concrete slab maing appts - tapered plug forced out after casting by rotating flanged screw | |
| DE3034740C2 (en) | ||
| DE2453713B2 (en) | Method for laying and fastening rails on concrete foundation strips or the like | |
| DE3403873A1 (en) | Apparatus for fastening a sleeve-shaped fixture on a formwork mould | |
| AT210911B (en) | Detachable screw connection for fastening rails to concrete sleepers | |
| DE504271C (en) | Clamp for pipe and other bodies | |
| DE19909206C2 (en) | Fastening for connecting rail supports with sleepers or supporting plates made of concrete | |
| AT205815B (en) | Process for the storage of machines and machine units on foundations | |
| DE19751812A1 (en) | Adjustment element for coordinate measuring machines | |
| DE940608C (en) | Press for applying tensile forces to the tendons in the manufacture of prestressed concrete | |
| DE1143629B (en) | Process for producing zones of high strength in synthetic resin bodies | |
| DE813370C (en) | Method and device for the manufacture of precast concrete and. like | |
| DE1815036C (en) | For the production of cavities in Be tonplatten od the like serving fillers | |
| AT225734B (en) | Rail fastening for concrete sleepers or concrete slabs | |
| DE313844C (en) | ||
| DE656101C (en) | Method of laying long tracks using wooden sleepers | |
| DE1026509B (en) | Device for anchoring tie rods with end threads, especially for pre-stressed concrete railway sleepers | |
| DE1080284B (en) | Device for wedging tensioned prestressed concrete wire bundles | |
| DE2500425A1 (en) | CONSOLE FOR SUPPORTING WASHBASIN AND SIMILAR | |
| DE827072C (en) | Rail fastening on reinforced concrete sleepers | |
| DE9104167U1 (en) | Form-true model base especially for dental jaw models | |
| DE8024650U1 (en) | ANCHOR FASTENING OF A POST CRANE | |
| DE583061C (en) | ||
| DE1812420U (en) | ANCHORS FOR SECURING THE POSITION OF INSERT BODIES IN FORMWORK CONCRETE. |