EP0347476A1 - Planche pour échafaudages - Google Patents
Planche pour échafaudages Download PDFInfo
- Publication number
- EP0347476A1 EP0347476A1 EP88109810A EP88109810A EP0347476A1 EP 0347476 A1 EP0347476 A1 EP 0347476A1 EP 88109810 A EP88109810 A EP 88109810A EP 88109810 A EP88109810 A EP 88109810A EP 0347476 A1 EP0347476 A1 EP 0347476A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- screed
- closure
- metal
- screed according
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/063—Friction heat forging
- B21J5/066—Flow drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/298—Forming collars by flow-drilling
-
- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
- E04G1/152—Platforms made of metal or with metal-supporting frame
-
- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
- E04G1/154—Non-detachably fixed and secured connections between platform and scaffold
-
- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
- E04G2001/158—Platforms supported by spigots which engage through holes in the platform
Definitions
- the invention relates to a screed for scaffolding in the form of an elongated hollow metal profile which is symmetrical with respect to all three central coordinate axes and has holes in the corners for the use of connecting means for attachment to the scaffolding.
- scaffolding essentially consists of vertical stands which, for example, can be constructed in a ladder-like manner and are composed of cross struts, possibly also of diagonal struts for reinforcement. Planks are provided on the scaffolding, one above the other, which can be walked on by the workers. Planks of various designs are already known. For example, there are planks made of wood or plywood, which are connected to metal frames, which in turn are locked to the scaffolding at suitable locations. Furthermore, profiled planks made of metal are known which are easier to produce than the former and easier to handle when the scaffolding is being built.
- the metal profiles of these planks are essentially C-shaped, the C-profile opening downwards, the longitudinal legs thus pointing downwards.
- the web of the C-profile connecting the two legs is provided, for example, with numerous holes with an edge that is alternately bent upwards and downwards, on the one hand to ensure non-slip safety for the workers on the accessible top and on the other to allow rainwater to drain off.
- these C-shaped planks have the disadvantage that cross winds get caught in the profile.
- the powers that come from these wind influences are very large and change direction in addition and they have to be absorbed by the scaffolding. Accordingly, the scaffolding must be anchored particularly securely and with a correspondingly large amount of effort.
- the invention is based on the object of creating a screed which is particularly reinforced at the most endangered screed ends so that it can withstand the greatest stresses occurring in practice.
- a closure profile is inserted into each of the ends, which has a web as a front wall and an upper flange and a lower flange, and that the holes are formed by flow molding in such a way that the metal of the upper screed wall and the upper flange and the lower screed wall and the lower flange is fused together in and from the area of the hole to be formed to inwardly projecting cylindrical bushings.
- the screed is in the form of an elongated hollow metal profile 1, which is designed symmetrically with respect to all three coordinate center axes x, y and z.
- the metal hollow profile 1 is formed by an upper wall 2, a lower wall 3 and two side walls 4 and 5.
- the screed can therefore be used as required, ie both walls 2 and 3 can be used as walk-on surfaces after a corresponding turn.
- the screed can also be attached to the scaffolding due to its symmetrical design.
- the screed has longitudinal ribs 14 and triangular ribs 15 on its large surfaces can be produced simultaneously with the drawing or pressing of the hollow metal profile 1.
- the screed 1 has two intermediate walls 10 and 11 which serve for reinforcement and which extend over the entire length of the screed and which are manufactured in one piece with the other parts of the screed described.
- the number of partitions depends on the width of the screed and the specified load.
- the front ends of the metal hollow profile 1 which are in the foreground for the invention are provided with the reference numerals 12 and 13 (FIG. 1).
- the area 16 is also marked in FIG. 3, which is preferably selected for making the hole 6.
- a closure profile 17 is inserted into each of the two ends 12 and 13 of the hollow metal profile 1, which is shown in FIG. 4 on an enlarged scale and in cross section.
- This closure profile 17 has a web 18 as a front wall, a lower flange 21, an upper flange 22 and an inner wall 23.
- the closure profile 17 is advantageously designed as a hollow profile with a rectangular, preferably square, cross-section, and the web 18 is expanded downwards and upwards by bead ribs 19 and 20.
- the closure profile 17 extends with the bead ribs 19, 20 in one piece over the entire width of the screed and covers the end faces of the screed walls described above.
- the metal hollow profile 1 and the two closure profiles 17 are made of the same light metal material, which is particularly advantageous for the hole formation explained below.
- the holes 6, 7, 8 and 9 are formed on both sides of the screed by flow molding such that the metal of the upper screed wall 2 and the upper flange 22 and the lower screed wall 3 and the lower flange 21 are cylindrical in the region of the hole to be formed Bushings 28 and 29 are fused together.
- the cylindrical bushes 28 and 29 protrude inwards from the edge of the hole, as is clearly shown in FIG.
- the holes are flow formed as follows. First, the closure profile is inserted into the relevant end 12 or 13 of the hollow metal profile 1. In this state, the upper and lower walls 2, 3 of the hollow metal profile 1 and the flanges 21 and 22 of the closure profile 17 still have their full wall thickness in the region of the hole to be formed.
- a flow former which consists of a particularly sintered hard metal and has the shape of a cylindrical mandrel with a lower conical end with a centering tip, is now placed in the direction of the dash-dotted axis 41 according to FIG.
- This mandrel is set, for example, by means of a suitable boring machine in high rotation and at the same time exposed to an adapted pressure. Due to the friction generated, such heat is generated that the metal walls described in the area of the bore to be formed change into a plastic state, initially forming a conical trough and then progressively a cylindrical bushing.
- the cylindrical bushes are provided with the reference numerals 28 and 29. They ultimately consist of the material that was originally between the dashed lines 24, 25 and 26, 27. These wall parts are then fused together in the cylindrical bushes 28, 29. It goes without saying that the bushing 28 is formed in the position shown in FIG. 5, while the bushing 29 is produced separately after the metal hollow profile 1 has been inverted with the wall 3 facing upwards.
- the flow forming is expediently carried out in such a way that the mutually facing inner edges 39 and 40 of the bushings 28 and 29 are at a certain distance 38 from one another, but in such a way that the two bushings 28 and 29 are aligned with one another, the cylindrical inner surfaces run parallel to the common axis 41 .
- the flow molding can also be designed so that the outer edges of the bushings 28 and 29 have small annular beads 30 and 31, which contribute to the reinforcement.
- closure profile 17 To facilitate insertion or handling of the closure profile 17, this is expediently provided, as shown in FIG. 4, with rounded edges and adapted to the cavity of the metal hollow profile while maintaining small air gaps.
- the metal hollow profile 1 expediently has a plurality of partitions, preferably two, partitions 10 and 11. These must be adapted to the closure profile 17 to be inserted. This is done in that the partitions are shortened according to the depth of penetration of the closure profile.
- the closure profile 17 has slots in the area of the intermediate walls 10, 11, into which the corresponding outer intermediate wall parts engage, so that there is further anchoring between the hollow metal profile 1 and the closure profile 17. The depth of the slots depends on the manufacturing conditions and the particular circumstances.
- the front ends 12 and 13 of the hollow metal profile 1 are largely closed by the closure profiles 17.
- the area of the closure profiles 17, including the cavities 32, 33 and 34 formed therein, and that between the closure profile 17 and metal hollow profile 1 existing gaps 35 and 36 and the not shown slots are sealed by plastic, preferably foam plastic.
- the plastic or foam plastic can be fed through the end faces of the holes formed. It is understood that the holes themselves are kept clear within the inner walls of the bushings.
- the entire cavity 37 of the hollow metal profile 1 can be foamed with foam plastic.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
- Body Structure For Vehicles (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Road Paving Machines (AREA)
- Extrusion Of Metal (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP88109810A EP0347476B1 (fr) | 1988-06-20 | 1988-06-20 | Planche pour échafaudages |
ES198888109810T ES2035163T3 (es) | 1988-06-20 | 1988-06-20 | Tablon para andamios de construccion. |
DE8888109810T DE3874330D1 (de) | 1988-06-20 | 1988-06-20 | Bohle fuer baugerueste. |
AT88109810T ATE80194T1 (de) | 1988-06-20 | 1988-06-20 | Bohle fuer baugerueste. |
GR920401930T GR3005604T3 (fr) | 1988-06-20 | 1992-09-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP88109810A EP0347476B1 (fr) | 1988-06-20 | 1988-06-20 | Planche pour échafaudages |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0347476A1 true EP0347476A1 (fr) | 1989-12-27 |
EP0347476B1 EP0347476B1 (fr) | 1992-09-02 |
Family
ID=8199069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88109810A Expired - Lifetime EP0347476B1 (fr) | 1988-06-20 | 1988-06-20 | Planche pour échafaudages |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0347476B1 (fr) |
AT (1) | ATE80194T1 (fr) |
DE (1) | DE3874330D1 (fr) |
ES (1) | ES2035163T3 (fr) |
GR (1) | GR3005604T3 (fr) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5555955A (en) * | 1994-06-17 | 1996-09-17 | Patent Construction Systems, Harsco Corporation | Combination scaffold plank |
AT1028U1 (de) * | 1994-08-25 | 1996-09-25 | Alusuisse Lonza Services Ag | Begehbare planke, insbesondere planke für den gerüstbau |
US5882136A (en) * | 1997-07-18 | 1999-03-16 | Safway Steel Products, Inc. | End cap system for scaffolding planks |
US6076991A (en) * | 1996-05-17 | 2000-06-20 | Safway Steel Products, Inc. | End cap system for scaffolding planks |
US6105723A (en) * | 1996-12-23 | 2000-08-22 | Harsco Corporation | Steel plank for scaffolding |
US7090053B2 (en) * | 1999-07-13 | 2006-08-15 | Bothwell Enterprises, Inc. | Scaffold plank with end connector and method of making the same |
US7401556B2 (en) | 2004-01-09 | 2008-07-22 | 3 Day Blinds, Inc. | Fixture for printing blinds |
CN107130807A (zh) * | 2017-04-13 | 2017-09-05 | 中建钢构有限公司 | 简易传送带式安装平台 |
CN115176061A (zh) * | 2019-09-11 | 2022-10-11 | 澳德菲尔控股有限公司 | 脚手架甲板、甲板元件及其部件 |
CN115977360A (zh) * | 2023-01-09 | 2023-04-18 | 江苏悦达绿色建筑科技有限公司 | 一种装配式建筑安全施工平台 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1189384A (fr) * | 1957-12-31 | 1959-10-02 | Houilleres Bassin Du Nord | Procédé et outil de formation de collets, et collets résultant de ce procédé |
DE1962274A1 (de) * | 1969-12-12 | 1971-07-15 | Eberhard Layher | Horizontales Geruestelement fuer Holz- und Metallgerueste |
NL8101502A (nl) * | 1981-03-26 | 1982-10-18 | Drabus Bv | Werkwijze voor behulp van een vloeiboor aanbrengen van een kraag in een plaat. |
US4496029A (en) * | 1983-03-30 | 1985-01-29 | Shigeharu Kuroda | Scaffold plank |
DE8617082U1 (de) * | 1986-06-26 | 1986-08-14 | Fa. Otto Fuchs, 5882 Meinerzhagen | Gerüstbohle |
-
1988
- 1988-06-20 DE DE8888109810T patent/DE3874330D1/de not_active Expired - Lifetime
- 1988-06-20 AT AT88109810T patent/ATE80194T1/de active
- 1988-06-20 EP EP88109810A patent/EP0347476B1/fr not_active Expired - Lifetime
- 1988-06-20 ES ES198888109810T patent/ES2035163T3/es not_active Expired - Lifetime
-
1992
- 1992-09-03 GR GR920401930T patent/GR3005604T3/el unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1189384A (fr) * | 1957-12-31 | 1959-10-02 | Houilleres Bassin Du Nord | Procédé et outil de formation de collets, et collets résultant de ce procédé |
DE1962274A1 (de) * | 1969-12-12 | 1971-07-15 | Eberhard Layher | Horizontales Geruestelement fuer Holz- und Metallgerueste |
NL8101502A (nl) * | 1981-03-26 | 1982-10-18 | Drabus Bv | Werkwijze voor behulp van een vloeiboor aanbrengen van een kraag in een plaat. |
US4496029A (en) * | 1983-03-30 | 1985-01-29 | Shigeharu Kuroda | Scaffold plank |
DE8617082U1 (de) * | 1986-06-26 | 1986-08-14 | Fa. Otto Fuchs, 5882 Meinerzhagen | Gerüstbohle |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5555955A (en) * | 1994-06-17 | 1996-09-17 | Patent Construction Systems, Harsco Corporation | Combination scaffold plank |
AT1028U1 (de) * | 1994-08-25 | 1996-09-25 | Alusuisse Lonza Services Ag | Begehbare planke, insbesondere planke für den gerüstbau |
US6076991A (en) * | 1996-05-17 | 2000-06-20 | Safway Steel Products, Inc. | End cap system for scaffolding planks |
US6105723A (en) * | 1996-12-23 | 2000-08-22 | Harsco Corporation | Steel plank for scaffolding |
US5882136A (en) * | 1997-07-18 | 1999-03-16 | Safway Steel Products, Inc. | End cap system for scaffolding planks |
US7188707B2 (en) | 1999-07-13 | 2007-03-13 | Bothwell Enterprises, Inc. | Scaffold plank with end connector and method of making the same |
US7090053B2 (en) * | 1999-07-13 | 2006-08-15 | Bothwell Enterprises, Inc. | Scaffold plank with end connector and method of making the same |
US7584824B2 (en) | 1999-07-13 | 2009-09-08 | Bothwell Enterprises, Inc. | Scaffold plank with end connector and method of making same |
US7401556B2 (en) | 2004-01-09 | 2008-07-22 | 3 Day Blinds, Inc. | Fixture for printing blinds |
CN107130807A (zh) * | 2017-04-13 | 2017-09-05 | 中建钢构有限公司 | 简易传送带式安装平台 |
CN115176061A (zh) * | 2019-09-11 | 2022-10-11 | 澳德菲尔控股有限公司 | 脚手架甲板、甲板元件及其部件 |
CN115977360A (zh) * | 2023-01-09 | 2023-04-18 | 江苏悦达绿色建筑科技有限公司 | 一种装配式建筑安全施工平台 |
CN115977360B (zh) * | 2023-01-09 | 2023-10-20 | 江苏悦达绿色建筑科技有限公司 | 一种装配式建筑安全施工平台 |
Also Published As
Publication number | Publication date |
---|---|
EP0347476B1 (fr) | 1992-09-02 |
DE3874330D1 (de) | 1992-10-08 |
GR3005604T3 (fr) | 1993-06-07 |
ES2035163T3 (es) | 1993-04-16 |
ATE80194T1 (de) | 1992-09-15 |
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