WO1994024389A2 - Scaffolding - Google Patents
Scaffolding Download PDFInfo
- Publication number
- WO1994024389A2 WO1994024389A2 PCT/DE1994/000378 DE9400378W WO9424389A2 WO 1994024389 A2 WO1994024389 A2 WO 1994024389A2 DE 9400378 W DE9400378 W DE 9400378W WO 9424389 A2 WO9424389 A2 WO 9424389A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wedge
- longitudinal slot
- back railing
- tabs
- scaffolding according
- Prior art date
Links
Classifications
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
-
- 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
- E04G7/00—Connections between parts of the scaffold
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
- E04G7/306—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect
- E04G7/307—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect with tying means for connecting the bars or members
Definitions
- the invention relates to a scaffolding with a back railing, a vertical scaffold tube, a wedge, which has a contact edge and an obliquely extending longitudinal slot and serves to clamp the back railing and two straps attached to the vertical scaffold tube at a desired back railing height, one of which Bolt passes through the ends of the tabs and the longitudinal slot of the wedge and the back rail engages with its outer end between the tabs.
- Scaffolding on buildings is primarily used for exterior work that takes place at a greater height and is generally constructed with vertically running scaffolding tubes on which horizontal ones
- Floors are suspended in order to enable the working people to reach the desired parts of the building.
- Diagonal struts are used for stabilization, while horizontal back railings on the outside of the scaffolding are connected to the vertical scaffolding tubes about a meter above the floors and prevent the working people from falling down.
- Substitute BJ Longitudinal slot used to fix the back railing.
- Horizontal straps which are angled at their ends, are attached to the vertical scaffold tube, for example by a welded connection, and are drilled through coaxially on the end face in order to fix the longitudinal slot of the wedge by means of a screw.
- the flat ends of the back railing are suspended between the vertical scaffold tube and the wedge and fastened to the top of the wedge by hammer blows. Due to the inclination of the contact edge in relation to the longitudinal slot, the end of the back railing is pressed against the vertical scaffold tube and fixed.
- the angle of inclination is approximately 10 ° and is referred to below as ⁇ .
- the disadvantage of the known fastening devices is, in particular, that the contact edge abuts only a small area at the ends of the back railing, so that it can undesirably be deformed when the wedge is driven in due to the high pressure. Furthermore, in the known device it is to be regarded as disadvantageous that only a reduced force is used to fix the backrest when vertical hammer blows onto the wedge, while a component deforms the bolt.
- the invention is based on the problem of designing a scaffolding in such a way that the back rails are securely fastened and deformations are avoided.
- a link drive is arranged between the wedge and the back railing, which can be displaced in a direction perpendicular to the axis of the back railing and lies flat against the contact edge and the back railing.
- the main idea of the invention is to see between the back railing and the contact edge of the
- Assign Keils a link drive that can be moved in the direction perpendicular to the axis of the back railing. Since it lies flat against the contact edge and the back railing, the pressure exerted on these elements is reduced, so that undesired deformations are avoided.
- a pendulum movement of the link drive around an axis perpendicular to the scaffold tube is provided within a small angular range and prevents the back railings from deforming even if the corresponding surface is not exactly vertical.
- slightly deformed back railings are possible because the link drive pivots until it lies flat. The fixation is not impaired by the rotatability, since a pendulum movement with a fixed wedge is impossible.
- REPLACEMENT LEAF transmit downward and horizontally inward forces via the brackets or directly to the vertical scaffold tube. If they are directed vertically upwards, they are transferred to the tabs by the link drive via its bearing. If they exceed a threshold value (determined by the clamping force with which the back railings are fixed), a sliding process takes place between the back railing and the wedge. The threshold is increased, since the surface is now exactly vertical, while the clamping force in known clamping devices splits into two components, only one of which (reduced by a factor cos ⁇ ) can be used for fixing.
- a threshold value determined by the clamping force with which the back railings are fixed
- the advantages of the invention consist primarily in the fact that the back railings are securely fixed, that they are not deformed, and that existing back railings and scaffold tubes can continue to be used.
- the link drive it is recommended to connect the link drive with a horizontal pin that is perpendicular to the direction of movement of the link drive. This pen engages
- Recesses in the tabs which allow displacement of the link drive in a direction perpendicular to the axis of the back railing and transmits vertical force components to the sheet.
- the pin allows the link drive to oscillate, so that slightly deformed back rails can still be used.
- Another advantage is that upward forces on the back railing turn the link drive in such a way that the wedge is pressed down and fixed.
- the distance between the longitudinal slot and the contact edge in the bent area is constant or reduced, so that the wedge remains in the outwardly rotated position after loosening and a distance between the railing that is sufficient to remove or position it the link drive and the back railing are created.
- Another advantage is that one person can hold the back railing in the middle during assembly and insert it into the tabs at both ends. In known fastening devices, tilting often occurs, so that two workers are required for hanging or one person has to change between the two end faces of the back railing.
- the welded connection fastens and covers the inner, adjacent legs, which enclose the wedge to improve occupational safety.
- the protruding screw heads and nuts of conventional fastening devices also endanger the working personnel.
- the bolt expediently runs between the inner ones
- the accessibility of the screw connection is improved by holes which run coaxially to the bolt in the outer tabs. They make it easier to retighten the nut and make it possible to replace the bolt and / or the wedge if it is damaged.
- the diameter of the holes is larger than that of the screw head and the nut.
- a disadvantage of the known fastening devices is that, in order to create the required space, the wedge depends on the
- the angle between the contact edge and the longitudinal slot determines the clamping force on the back railing and the required length of the longitudinal slot of the wedge. If you choose this angle very small, you get a high clamping force, but you need a very long wedge, while a large angle only requires a short wedge, but an inevitable
- this angle be greater than 8 ° and less than 15 °, since such an angle ensures great security, but the wedge is easy to handle.
- Figure 1 is a side view of an inventive connection between a vertical scaffold tube and two back rails.
- FIG. 2 shows a side view of a connection according to FIG. 1.
- FIG. 1 It can be seen in FIG. 1 that the vertical scaffold tube (1) is connected to a tab (7) which serves to fix two flat ends of back rails (2, 3).
- a wedge (4) has a vertically running longitudinal slot (5) through which a bolt (6), which is provided with a nut and is fixed on the bracket (7), engages. When the wedge is inserted in the vertical direction, the distance (which is inclined relative to the longitudinal slot (6)) is reduced. ten) contact edge (14) to the vertical scaffold tube (1) until the only horizontally movable backdrop drive (10) touches both the contact edge (14) and the outer back railing (3).
- the sloping contact edge (14) causes a vertical force to split into two components, of which the force directed perpendicular to the surface results in a clamping force that fixes the back railings.
- a pin (8) is arranged in horizontal recesses (9) in order to enable movement of the link drive (10) only in the desired direction and to transmit vertical force components to the tab (7).
- upward forces on the back railings (2, 3) cause the link drive (10) to rotate, which fix the wedges (4), so that optimum securing takes place.
- the upper side of the wedge (4) runs horizontally in order to facilitate driving in by means of vertical hammer blows.
- the lower area of the longitudinal slot which is bent outwards, causes the wedge (4) to pivot outwards as soon as it reaches the bolt (6), so that the back railings (2, 3) can be easily removed.
- the distance between the longitudinal slot (5) and the contact edge (14) is constant in the area below the break point in order to enable the rotation movement.
- the longitudinal slot (5) is so long that the displacement of the link drive (10) is greater than the strength of a back railing (2, 3).
- two U-shaped tabs (7, 13) are connected to the vertical scaffold tube (1). The end faces of the outer, longer legs are fixed to the vertical scaffold tube.
- the inner legs (11, 12) are used to connect the wedge (4) and the link drive (10) and, because the bolt (6) is arranged so as to be protected by the outer legs (7, 13), increase the safety at work Holes drilled coaxially to the bolt (6), not recognizable in the drawing, in the outer
- Legs (7, 13) facilitate the replacement of a damaged bolt (6) or wedge (4).
- the result is a scaffolding that makes unintentional loosening of the back railings (2, 3) difficult and improves occupational safety.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59404041T DE59404041D1 (en) | 1993-04-07 | 1994-04-02 | SCAFFOLDING |
CZ952570A CZ285418B6 (en) | 1993-04-07 | 1994-04-02 | Gripping element for scaffold railing |
EP94911102A EP0693153B1 (en) | 1993-04-07 | 1994-04-02 | Scaffolding |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG9305290.1U | 1993-04-07 | ||
DE9305290U DE9305290U1 (en) | 1993-04-07 | 1993-04-07 | Scaffolding |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1994024389A2 true WO1994024389A2 (en) | 1994-10-27 |
WO1994024389A3 WO1994024389A3 (en) | 1994-12-22 |
Family
ID=6891763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1994/000378 WO1994024389A2 (en) | 1993-04-07 | 1994-04-02 | Scaffolding |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0693153B1 (en) |
AT (1) | ATE158049T1 (en) |
CZ (1) | CZ285418B6 (en) |
DE (2) | DE9305290U1 (en) |
WO (1) | WO1994024389A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9314353U1 (en) * | 1993-09-22 | 1993-12-16 | Hans-J. Gebauer GmbH, 56727 Mayen | Working platform, preferably scaffolding for scaffolding or the like. |
CN107060316A (en) * | 2017-05-09 | 2017-08-18 | 成都市容德建筑劳务有限公司 | A kind of locking disk buckle type scaffold |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2878079A (en) * | 1957-01-29 | 1959-03-17 | Hyre Robert Warren | Scaffolding |
GB1250607A (en) * | 1967-11-25 | 1971-10-20 | ||
GB2011008A (en) * | 1977-12-22 | 1979-07-04 | Layher E | Wedge Connector for Scaffolding |
DE3429630A1 (en) * | 1984-08-11 | 1986-02-20 | Peri-Werk Artur Schwörer GmbH & Co KG, 7912 Weißenhorn | Transverse strut for stacking tower |
FR2585088A1 (en) * | 1985-07-19 | 1987-01-23 | Gendrot Fernand | Device for the rapid assembly of two elements |
DE3801354A1 (en) * | 1987-05-11 | 1988-12-01 | Mj Geruest Gmbh | Device for suspending and clamping back railings on frameworks, in particular scaffoldings, upon which it is possible to walk |
-
1993
- 1993-04-07 DE DE9305290U patent/DE9305290U1/en not_active Expired - Lifetime
-
1994
- 1994-04-02 EP EP94911102A patent/EP0693153B1/en not_active Expired - Lifetime
- 1994-04-02 WO PCT/DE1994/000378 patent/WO1994024389A2/en active IP Right Grant
- 1994-04-02 CZ CZ952570A patent/CZ285418B6/en not_active IP Right Cessation
- 1994-04-02 DE DE59404041T patent/DE59404041D1/en not_active Expired - Fee Related
- 1994-04-02 AT AT94911102T patent/ATE158049T1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2878079A (en) * | 1957-01-29 | 1959-03-17 | Hyre Robert Warren | Scaffolding |
GB1250607A (en) * | 1967-11-25 | 1971-10-20 | ||
GB2011008A (en) * | 1977-12-22 | 1979-07-04 | Layher E | Wedge Connector for Scaffolding |
DE3429630A1 (en) * | 1984-08-11 | 1986-02-20 | Peri-Werk Artur Schwörer GmbH & Co KG, 7912 Weißenhorn | Transverse strut for stacking tower |
FR2585088A1 (en) * | 1985-07-19 | 1987-01-23 | Gendrot Fernand | Device for the rapid assembly of two elements |
DE3801354A1 (en) * | 1987-05-11 | 1988-12-01 | Mj Geruest Gmbh | Device for suspending and clamping back railings on frameworks, in particular scaffoldings, upon which it is possible to walk |
Also Published As
Publication number | Publication date |
---|---|
DE9305290U1 (en) | 1993-06-09 |
CZ257095A3 (en) | 1996-05-15 |
CZ285418B6 (en) | 1999-08-11 |
DE59404041D1 (en) | 1997-10-16 |
WO1994024389A3 (en) | 1994-12-22 |
EP0693153B1 (en) | 1997-09-10 |
ATE158049T1 (en) | 1997-09-15 |
EP0693153A1 (en) | 1996-01-24 |
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