WO1997022768A1 - Mast for a building scaffold or hoist - Google Patents

Abstract

A mast for a building scaffold or hoist which has a polygonal cross-section and a constant transverse area over its entire length is constructed in such a way that there is at least one plate between the edges of the mast over its entire length, the mast consists of at least one plate or at least two plates of equal or unequal size and there are cross-sectional reinforcements (4, 14, 8, 18, 24, 27, 30, 31, 34, 36, 43) in the region of the cross-section of the mast to ensure stability, at least one cross-sectional reinforcement (4, 14, 34) to form an abutment section and at least one cross-sectional reinforcement (11, 21, 25, 36, 43) for fitting a drive section (12, 22, 26, 29, 40, 42, 47, 49).

Description

 Mast for a scaffolding or a building block

The invention relates to a mast for scaffolding or a building hiff, which is polygonal in cross section and has a constant cross sectional area over its entire length.

From DE 4406987 C1, a lifting scaffold with several scaffolding masts is known, with driving platforms being provided between the scaffolding masts. The scaffolding masts are attached to a building facade by means of several retaining sockets. The scaffold tower consists of two support profiles and a corner profile, with the support profiles and the corner profile forming an isosceles triangle when viewed from above. The support profiles and the corner profile are stabilized via cross and inclined struts. Driving profiles are provided on the support profiles. Busbars are also provided on the struts

From Jarosiav Koser, "Construction with aluminum", Aluminum-Ver¬ lag GmbH, Konigsallee 30, Dusseldorf, a light antenna guy mast is known, which consists of three profile bars that are connected to each other so that they have an equilateral cross-section Form a triangle. The profile bars are identical to one another. One of these profile bars consists of a sheet metal, on one side of which a circular cylindrical reinforcement and on the other A laterally open pipe section is provided. The laterally open tube section of one profile bar takes up the cylindrical reinforcement of the adjacent profile bar. This well-known antenna guy mast consists of standardized specially pressed profiles.

From US-PS 4248025 a light pole is known which tapers from bottom to top. The known light pole is approximately triangular in shape, with a bent edge plate being provided on each of the three edges of the light pole. A trapezoidal sheet is arranged between each two edge sheets, which is screwed to the two adjacent edge sheets.

US Pat. No. 3,263,302 describes a mast for electrical overhead lines, which is a regular octagon at its lower end in cross section and a square at its upper cross section. The mast tapers from bottom to top in such a way that the width of four sheets remains constant over the entire length of the mast, while the other four sheets of the same width arranged in between taper from bottom to top to zero. The individual sheets have reinforcements in their central area and devices on their edges for connecting to adjacent sheets.

The invention has for its object to provide a scaffold mast of the type mentioned in the introduction, in which the width and / or the thickness of the sheets as well as their cross-section and the cross-section of the profile bars can be designed differently and thus statically individually designed scaffold masts can be realized.

According to the invention, this object is achieved by

that at least one sheet is provided between the edges of the mast over its entire length,

- That the mast consists of at least one sheet or at least two identical or different sheets and - In the area of the cross-section of the mast, cross-sectional reinforcements to ensure stability, at least one cross-sectional reinforcement to form a stop profile and at least one cross-sectional reinforcement to arrange a drive profile are provided.

In this way one arrives at a mast for a scaffolding or a building lift of the type mentioned in the introduction which fully fulfills the aforementioned task.

A new rolling process in the manufacture of the sheets offers the additional advantage that, in the course of the cross section, the material accumulations rolled in in the longitudinal direction of the mast sheet not only meet the structural conditions but can also be provided with a profile or toothing which can move or support the drives of the working platforms or lifts. In this way e.g. to be dispensed with the otherwise very expensive rack and pinion drive. Profiles with such profiling or toothing can also be equipped. Either during the rolling process or in work steps that follow, the mast plate or the different mast plates are, if necessary, with bevels, roll profiles, beads, bonds or the like and / or material cutouts by punching, cutting or the like adapted to all other design requirements.

If there are large distances between two edges or rolled-up material accumulations, which have to be bridged by a statically loaded sheet, there is usually a risk of sheet bending. This is counteracted in the case of large spans between the edges, profiles or rolled-up material accumulations by appropriate shaping of the sheet, for example by providing the sheet with bends or beads or by designing it as a wave profile running transversely to the tower mast axis. With large distances between the profile bars or material accumulation Cut-outs to reduce weight can also be introduced into the metal sheets to reduce the weight and static load of the support profile.

Resistance welding is particularly suitable as a connection between the sheets and possibly the profiles, since several mast sheets can be connected to one another or to profiles over the entire length in a short time, which is of interest for static analysis. However, all other joining methods as well as screw and rivet connections can also be used without restriction.

Depending on the application, the scaffold mast can be equipped with one or more busbars, toothed racks and the like according to the mast length, and centering and connecting parts can be equipped at the ends of the mast.

Quick couplings are of great importance for connecting the masts to one another and in addition to the screw connections normally used. These should be designed centrally via a mechanical or hydraulic drive in such a way that all form-fitting mast connections take place simultaneously and the connection is additionally acted upon by the drive of the quick coupling or its followers with the required pretension.

Further useful features emerge from subclaims 2 to 16.

In this way, a scaffold mast is obtained, which can be implemented differently due to the different design of the sheets or profile bars. It is thus possible to create scaffolding masts which are inexpensive, quick and easy to manufacture and which can also be equipped with additional functional options, for example with guides for rollers, receiving parts for other mechanical components and the like. Statically individually designed supports or supports can thus be implemented via the different design of the sheets or profile bars.

The drawing shows four exemplary embodiments of a scaffold mast designed according to the invention. It shows:

1 shows a cross section through a scaffolding mast according to a first embodiment,

2 shows a cross section through a scaffolding mast according to a second embodiment,

3 shows a cross section through a scaffolding mast according to a third embodiment,

4 shows a cross section through a scaffold mast according to a fourth embodiment and

5 the scaffold mast according to FIG. 1 with drives for driving platforms and with drives for sledges.

The scaffold mast shown in FIG. 1 according to a first exemplary embodiment is triangular in cross section such that the cross section represents an equilateral triangle. The scaffold mast consists of sheets 1, 2, 3, the sheets 1 and 2 forming the side lines of an equilateral triangle and the sheet 3 forming the base line of this triangle in the selected form of representation.

The sheet 1 has at its upper end a thickening 4 which consists of a part 5 running in the direction of the sheet, a part 6 angled at an obtuse angle and a part 7 angled at a right angle from part 6.

At the lower end there is also a thickening 8 which consists of a part 9 running in the direction of the sheet 1 and an adjoining U-section 10 which is bent at an obtuse angle by the part 9. The U-shaped profile 10 has a leg 11 with a profile 12, in which a drive engages by means of a drive part that fits in the profile 12. The sheet 1 is equipped with beads 13 or with a corrugated profile to increase the static strength and to avoid buckling. The sheet 1 has the same cross section between the thickenings 4 and 8 over its entire width.

The sheet 2 is designed in accordance with the sheet 1, so that the parts 14 to 23 of the sheet 2 correspond to the parts 4 to 13 of the sheet 1.

At the left end of the sheet 3, this has a thickening 24, which has the shape of a lying U-profile. A profiling 26 is provided on the free leg 25, in which a drive can engage with drive means.

The conditions on the right side of the sheet 3 are corresponding, so that the components 27, 28, 29 on the right side of the sheet 3 correspond to the components 24, 25, 26 on the left side of the sheet 2. The sheet 3, like the sheets 1 and 2, has beads 32 or incorporated shafts. Line 33 represents the line of symmetry or plane of symmetry between the left half and the right half of the scaffolding mast.

The scaffold mast illustrated in FIG. 2 differs from the scaffold mast shown in FIG. 1 in that between the thickening 8 of the sheet 1 and the thickening 24 of the sheet 3 there is a hollow profile 30 and between the thickening 18 of the sheet 2 and the thickening 27 of the sheet 3 an identical hollow profile 31 are arranged.

The scaffold mast shown in FIG. 3 consists of three profiles 34, 36, 43 on the triangles of the triangle representing the cross section and three sheets 50, 51, 52 connecting two adjacent profiles. The profile representing the tip of the triangle 34 is T-shaped with a web that widens downwards on both sides. The profile 36 arranged at the left end of the base line is U-shaped, a flange 37 being angled and widening according to an angle of 60 ^* . The outer leg 39 has a profile 40, in which a drive with corresponding drive components can engage. On the opposite flange 37 there is a web 41 with a profile 42, into which a drive with correspondingly profiled drive elements can also engage.

At the right end of the triangular base line a profile 43 is provided which corresponds to the profile 36, so that the components 43 to 49 correspond to the components 36 to 42.

The upper profile 34 is connected to the lower left profile 36 via a plate 50. Likewise, the upper profile 34 is connected to the lower right profile 43 by a sheet 51. Likewise, the two lower profiles 36 and 43 are connected to one another by a sheet 52. The sheets 50, 51 and 52 are identical.

The scaffold mast shown in FIG. 4 differs from the scaffold mast illustrated in FIG. 3 in that the reinforcements 53, 54, 55 of the profiles 34, 36, 43 are stronger, and the scaffold mast is more stable.

FIG. 5 shows the scaffold mast shown in FIG. 1 with drives for work platforms 56, 60 and carriages 66, 69 arranged thereon. A drive 56 engages over a plurality of gearwheels 57, 58 by means of a segment 59 in the profiling 12 of the leg 11. In the same way, via a drive 60 and via gearwheels 61, 62 through a segment 63 which is in the profiling 22 of the Schenk 21 engages, the drive of work platforms possible.

A busbar 64 is arranged on the sheet metal 2 and a current collector 65 is arranged on the drive 60. Furthermore, a drive 66 is provided which engages in the profiling 26 of the leg 25 via a gear 67 and a segment 68. On the opposite side, the ratios are corresponding, so that the components 69, 70, 71 correspond to the components 66, 67, 68.

In addition, a busbar 72 is arranged on the sheet metal 3 and a current collector 73 is arranged on the drives 66 and 69.

Reference list

Sheet 34 profile 67 gear sheet 35 reinforcement 68 segment sheet 36 profile 69 drive thickening 37 flange 70 gear part 38 reinforcement 71 segment part 39 leg part 40 profiling thickening 41 web part 42 profiling U-profile 43 profile leg 44 flange profiling 45 reinforcement beads 46 Leg thickening 47 profiling part 48 web part 49 profiling part 50 sheet U-profile 51 sheet part 52 sheet U-profile 53 reinforcement leg 54 reinforcement profiling 55 reinforcement beads 56 drive thickening 57 gear leg 58 gear profiling 59 segment thickening 60 drive leg 61 gear Profiling 62 gear hollow section 63 segment hollow section 64 conductor rail beads 65 pantograph symmetry level 66 drive

Claims

claims 1. mast for a scaffolding or a building lift, which is polygonal in cross-section and has a constant cross-sectional area over its entire length, characterized in that that at least one sheet is provided between the edges of the mast over its entire length, - That the mast consists of at least one sheet or at least two sheets and - That in the area of the cross section of the mast cross-sectional reinforcements (4,14,8,18,24,27,30,31,34,36,43) to ensure the stability, at least one cross-sectional reinforcement (4,14,34) for Formation of a stop profile and at least one cross-sectional reinforcement (11, 21, 25, 28, 30, 43) for the arrangement of a drive profile (12, 22, 26, 29, 40, 42, 47, 49) are provided. 2. Mast according to claim 1, characterized in that at least two sheets (1,2,50,51) are identical. 3. Mast according to one of the preceding claims, characterized ge indicates that profile bars (4,14,8,18,34,36,43) made of steel or aluminum in the form of hollow, rolled or pressed profiles or the like in connection with the sheets are provided following the length of the mast. 4. Mast according to one of the preceding claims, characterized ge indicates that a sheet or several sheets with the Pro¬ filstäben (4,14,8,18,34,36,43) is or are connected. Mast according to one of the preceding claims, characterized in that the sheet or sheets change one or more times over the entire sheet cross-section. derenden shape in the form of material accumulations (5,7,9,15,17,19) is or are. 6. Mast according to one of the preceding claims, characterized ge indicates that the sheets between the edges, cross-sectional reinforcements (4,14,8,18,24,27,30,31,34,36,43) and / or Accumulations of material (5, 7, 9, 15, 17, 19) are bent accordingly to increase their load-bearing capacity, in particular provided with beads (13, 23, 32), bonds or a wave profile. 7. Mast according to one of the preceding claims, characterized in that the cross-sectional reinforcement of the stop profile (4, 14, 34) represents a T-shaped profile. 8. Mast according to one of the preceding claims, characterized ge indicates that the cross-sectional reinforcement (8, 18, 36, 43) for arranging a drive profile (12, 22, 26, 29, 40, 42, 47, 49) is an angled or U- shaped profile. 9. Mast according to one of the preceding claims, characterized ge indicates that the profile bar (35,38,45,53,54,55) or the profile bars (35,38,45,53,55) or the sheet metal or the Sheets (1, 2, 3) have drive profiles on one edge or both edges. 10. Mast according to one of the preceding claims, characterized ge indicates that the sheets (1,2,3,50,51,52) are connected at their edges to one another or to profiles (34,36,43). 11. Mast according to one of the preceding claims, characterized in that the mast consists of steel or aluminum or its alloys. 12. Mast according to one of the preceding claims, characterized ge indicates that on at least one of the professional bars (35,38,45,53,54,55) or the sheets (1,2,3) at least one along the profile bar or sheet In the longitudinal direction of the mast movable working platform or at least one along the profile bar (35,38,45,53,54,55) or the sheet in the longitudinal direction of the mast movable lift, slide or the like. Is arranged. 13. Mast according to one of the preceding claims, characterized ge indicates that the mast is equipped with a form-shaped Antriebs¬ profile, in particular with racks. 14. Mast according to one of the preceding claims, characterized ge indicates that the mast is equipped with a non-positive drive profile. 15. Mast according to one of the preceding claims, characterized ge indicates that the mast is equipped with busbars (64). 16. Mast according to one of the preceding claims, characterized ge indicates that the mast is equipped with mechanically or hydraulically driven snap fasteners for connection to one another.