ES2283929T3 - GIVE IT UP TO BRIDGE OF STEEL SHEET. - Google Patents

Abstract

Run plate (20) made of steel sheet (30) has run surface (21) fitted with longitudinal edges (22.1,22.2) and section stiffener (25.1,25.2) formed by chamfer which extends over entire length of run plate. Wall part of respective section stiffener are arranged diagonally outwards from run surface and extended towards edge of back grip part (40.1,40.2).

Description

Footbridge for bridging of sheet steel.

The invention relates to a metal walkway Steel for scaffolding, work platforms, consoles, dais and the like, in particular for overlapping bridges of floors of scaffolding presenting horizontal passable surfaces of modular or system scaffolding, for example, for bridging of assembly or disposal areas in construction corners and / or of holes in or in wall areas, in particular those in the that a corresponding standard gateway fixation is not possible to the modular or system scaffolding, presenting the gateway a passable surface whose longitudinal edges are provided longitudinal side beams formed by folded, which have at least one reinforcement profile formed by folding, respectively, which extends preferably primarily along the entire length of the walkway and which has metal terminal profiles on its front sides fixedly attached to the passable surface and to the stringers longitudinal sides, which extend essentially to the along the entire width of the catwalk and presenting preferably a height corresponding to the width of light between  the underside of the steel sheet that forms the surface passable and the at least one corresponding reinforcement profile, forming the end profiles and side beams longitudinal a frame, being folded, respectively, at least one of the reinforcement profiles of the longitudinal side member corresponding forming a bottom wall part that is preferably extends approximately parallel to the surface  passable inward, from which it has been folded, preferably perpendicularly, respectively, a part vertical wall that extends into the space between the stringers longitudinal sides of the corresponding reinforcement profile, of which has been folded, respectively, another wall part of the corresponding reinforcement profile, which extends, respectively, outwards. By "folding" in the sense  This document means a folding, folding and / or bending and similar, preferably with the help of folding devices, folding and / or forging by lamination, that is, a conformation of steel plates in the broadest sense of the word.

In the assembly of scaffolding, in particular, of called system or modular scaffolding, there may be areas of assembly or arrangement, for example in the corner area of buildings, in which a standard floor fixing is not possible of scaffolding and / or where gaps in or in areas of wall or should be able to provide viable scaffolding elements. In areas of this type, scaffolding floors are arranged, by for example, overlapping in their final zones and in overlapping tilted on top of each other, to be able to provide a continuous passable surface at a desired distance from the wall of the construction.

As bridging floors have been placed up to Now in many cases wooden planks. However, the boards of wood of this type have only a resistance to limited weather and its protection is not satisfactory non-slip, particularly when it rains. In addition, the planks of wood of this type cannot meet the most stringent requirements Regarding the heat load. In addition, when performing work on welding there is always the danger of being able to burn the wood planks of this type.

It is therefore desirable to be able to use floors to bridging or complementary metal floors, particularly steel and / or aluminum. For safety reasons, floors to bridge or complementary floors of this type must be secured to prevent a lift or mutual displacement. This has been done proposed in DE 203 18 090 U1 a fixing bolt with a lateral gear element behind an elastic recess and flexible, which can be inserted into recesses on surfaces at least two stories of scaffolding, so that these are secured against each other to prevent displacement thereof. To avoid repetitions and for clarity, includes in this place all the content of document DE 203 18 090 U1. The bridges to be known by this document they have longitudinal reinforcement stringers in the form of profiles in U. The flexural and torsional stiffness, as well as the manageability of bridges of this type can be improved

Steel sheet walkways intended for The assembly of modular or system scaffolding have been given to know, for example, by document DE 29 16 828 C2. The Steel sheet walkways of this type are used successfully since Many years ago. Especially in applications in areas for bypass mentioned above and in view of the requirements There, however, also seem to be improvable steel sheet walkways that have been known for a long time weather.

GB 2047317 A describes a gateway with the characteristics of the preamble of claim 1.

Therefore, the invention aims at provide a steel sheet walkway that can be manufactured from simple way and that can be handled simply and safely, also when grabbed with gloves, presenting at the same time a flexural rigidity and advantageous torsion, as well as favorable possibilities to protect against corrosion.

This objective is achieved through characteristics of claim 1, in particular, because the another wall part of the corresponding reinforcement profile is performed, respectively, as or with a side element of engage behind that extends outwardly and that moves away from the passable surface.

According to an advantageous embodiment variant it may be provided that the side element of meshing behind be configured with an inclined surface to engage behind flat, which extends along its entire width. This allows a simple and economical manufacturing, as well as a reduced weight of the catwalk and favorable conditions to engage behind, so that a simple and safe handling is possible.

For this purpose, according to a variant embodiment especially advantageous it may be provided that the element side of mesh behind is essentially configured from straight form along its entire width.

In addition, it may be especially advantageous that the lateral gear element behind extends towards the part of bottom wall. In this way a rigidity can be achieved advantageous of the catwalk and a simple grip, as well as safe with hand.

According to another variant embodiment it may be advantageously provided that between the outer edge or the free end of the side element to engage behind and the part of reinforcement profile wall opposite it, respectively, fundamentally no slit is formed or just a slit reduced, so that the danger is prevented or excluded in this area of an injury or imprisonment of a person's fingers that handles the catwalk.

These advantages can be achieved especially if the rear side gear element is preferably supported with its free end on the inner side of the wall part lower.

According to a variant embodiment especially advantageously it may be provided that the side beams lengths have a height of less than 60 mm, and may be especially advantageous if the height of the side beams Longitudinal is approximately 45 mm. This way you can especially secure side grip of the walkways by hand, also with gloves, in combination with a reduced weight of the catwalk.

According to a variant embodiment especially advantageously, it can also be provided that the light width of the reinforcement profile is greater than 0.3 times the height of the longitudinal lateral stringers, corresponding, in particular, approximately one third of the height of the stringers longitudinal sides. This allows a flexural rigidity and the especially large torsion of the catwalk, existing despite from it advantageous grip possibilities by hand, specifically from the inside in the reinforcement profile of the runway.

The gateway can be manufactured in a way especially economical if the wall parts that form the longitudinal lateral stringers and reinforcement profiles are folded by rolling forging.

According to another advantageous embodiment variant it may be provided that the terminal profiles are configured without auxiliary coupling means, in particular without claws hitch. This way you can reduce the danger of tripping on the area of the front edges of the catwalks and the catwalks can be grabbed on the front side with your hand on any puno along the terminal profiles, which is especially  advantageous during the assembly and disassembly of the scaffolding.

It is understood that the measures above described can be combined free choice within the framework of the feasibility of the invention.

Other advantages, characteristics and aspects of the invention can be read in the descriptive part exposed to then, in which a figure is described with the help of the figures advantageous embodiment of the invention.

They show:

fig. 1 a partial view three-dimensional of a walkway in the area of its front side;

fig. 2 a view in section transverse through the gangway according to figure 1 along the 2-2 cut line;

fig. 3 a partial side elevation with a partial longitudinal section view through the gangway according to figure 2 along the cutting line 3-3;

fig. 4 a plan view from above the catwalk according to figure 1.

The steel sheet walkway 20 shown in the figures have a passable surface 21, at whose edges lengths 22.1, 22.1 lateral stringers are provided longitudinal 23.1, 23.2 formed by folding. These present at their ends not oriented towards the surface passable 21 at least one reinforcement profile 25.2, 25.2, respectively, formed by folding (folding 37.1). The gateway 20 also presents on its front sides, of which in The figures only show a front side 26, terminal profiles 27 of metal, preferably also of sheet steel, attached fixedly to the passable surface 21 and the two stringers longitudinal sides 23.1, 23.2, here by welding (welded seams 59.1, 59.2, 59.3; figure 3).

The terminal profiles 27 extend mainly along the entire width 28 of the gateway 20 and present here a height 29, which corresponds to the width of light 32 between the bottom side 31 of the steel plate 30 forming the passable surface 21 and the at least one reinforcement profile 25.1, 25.2 corresponding, so that the terminal profiles 27 and longitudinal lateral stringers 23.1, 23.2 form a frame 33.

To improve, on the one hand, protection non-slip and to allow, on the other hand, an easy exit from liquids, the passable surface 21 is provided with a plurality of recesses 47, 48, configured here as holes Circular The cut-out edges 51 of the cut-outs 47 are folded up while the cutout edges 52 of the recesses 48 are bent down (fig. 3). The layout and configuration shown of recesses 47 and 48 at the same time they lead to an advantageous surface reinforcement passable 21 and, therefore, of the entire gateway 20.

Longitudinal side edges 23.2, 23.2 they are configured with a top rail profile 53.1, 53.2 and a bottom beam profile 54.1, 54.2, as well as a vertical wing 61.1, 61.2 folded inwards, respectively, which are arranged approximately perpendicular to the passable surface 21. The upper beam profile 53.1, 53.2 respectively upper is set respectively with a top profile part 62.1, 62.2, which is configured fundamentally straight along its entire width and that it is formed, therefore, with a flat surface, respectively. This surface is arranged with the edges of upper recess 51 of recesses 47 on a surface common flat.

It is an essential feature of the invention. that the gateway 20 is configured in a piece of sheet steel, with the exception of terminal profiles 27, and that the stringers longitudinal sides 23.1, 23.2, as well as the profiles of reinforcement 25.1, 25.2 with its wall parts 34.1, 34.2; 38.1, 38.2 and 39.1, 39.2 are made of folded steel sheet. These parts of profile are preferably manufactured by means of rolling forging.

Reinforced profiles 25.1, 25.2 folded respectively inwards (folded 37.1) of the stringers longitudinal sides 23.1, 23.2 are formed, respectively, by a lower wall portion 34.1, 34.2 folded towards the inside (folded 37.1) of longitudinal lateral stringer 23.1, 23.2 corresponding or lower beam profile 54.1, 54.2 of this, a vertical wall part 38.1, 38.2 folded from it approximately in the perpendicular direction upwards, it is that is, in the direction of the bottom side 31 of the steel plate 30 that forms the passable surface 21 (folded 37.2) and another part wall 39.1, 39.2 that extends, respectively, so tilted outward and away from the surface passable 21, folded (folded 37.3), made as an element lateral gear back 40.1, 40.2. Bottom wall part 34.1, 34.2 corresponding reinforcement profile 25.1, 25.2 is fundamentally set up straight along all your width 34.1, 34.2, so it has a support surface flat bottom, respectively. Similarly, the part of corresponding vertical wall 38.1, 38.2 of the reinforcement profile 25.2, 25.2 corresponding is basically configured from straight form along its entire width or height, so that laterally opposite surfaces are made, which are flat, respectively.

The lateral elements engage behind 40.1, 40.2 are configured identically, respectively, so that the common reference sign 40 will then be used. He Lateral gear element behind 40 is made with a inclined surface of gearing behind 42 flat, which extends fundamentally along its entire width 41 and that is fundamentally straight along its entire width 41. The element  lateral gear back 40 preferably extends towards the corresponding bottom wall part 34.1, 34.2 and is supported with its free end 43 on the inner side 44 of the wall part lower 34.1, corresponding 34.2. It is understood that the part of wall 39.1, 39.2 can also be folded up or towards outside or down or inward in the area where supports on wall part 34.1, 34.2.

The longitudinal lateral stringers 23.1, 23.2 have a height 45 that measures here approximately 45 mm. According to a fundamental characteristic of the invention, the height Free 46 of reinforcement profile 25.1, 25.2 is greater than 0.3 times the height 45 of the longitudinal lateral beams 23.1, 23.2, corresponding, in particular, approximately one third of height 45 of longitudinal lateral stringers 23.1, 23.2. In the preferable embodiment shown in the figures, the corresponding reinforcement profile 25.1, 25.2 presents a height of about 14 to 16 mm, preferably 15 mm

The terminal profiles 27 are configured here as a U-profile. This comprises a front wing 48 and a wing lower 56 and an upper wing 57 folded at a right angle to this one, respectively (fig. 3). The height 29 of the terminal profile 27 which corresponds to the distance between the lower wing 56 and the wing upper 57 corresponds to the width of light 32 or distance 55 between the lower side 31 of the steel plate 30 forming the passable surface 21 and reinforcement profile 25.1, 25.2 corresponding, that is, here the folding 37.3 of this one. This form, the terminal profile 27 can be inserted, as shown, in particular, in figures 1 and 3, between the steel plate 30 which forms the passable surface 21 and reinforcement profiles 25.1, and 25.2. The front wing 58 is preferably protruded a small distance The terminal profile 27 is fixedly connected both to the steel plate 30 which forms the passable surface 21 as to the steel plate 30 forming the reinforcement profile 25.1, 25.1 corresponding, here by welding (welded seams 59.1, 59.2, 59.3).

It is understood that instead of the reinforcement profile 25.1, 25.2 shown in the figures and extending primarily along the entire length of the gateway 20, shorter, configured reinforcement profiles can also be used with a corresponding cross section, and may be provided at the corresponding front ends of the catwalk another reinforcement profile, respectively, for example in the form of a wing folded approximately in the perpendicular direction with respect to the longitudinal side member 23.1, 23.2 corresponding to the inside. In this case, terminal profiles 27 can be used, as shown in the figures and described above or may use terminal profiles with a corresponding height major, so that the upper wing of these rests, in turn, on the bottom side 31 of the steel sheet 30 that forms the surface passable 21, while their lower wing is supported on the inner side of the folded wing at the lower end of the longitudinal side member 23.1, 23.2 corresponding to the inside, also being fixed there, preferably by welding.

List of reference signs

twenty

Runway

twenty-one

Passable surface

22.1

Longitudinal edge of 21

22.2

Longitudinal edge of 21

23.1

Longitudinal lateral stringer

23.2

Longitudinal lateral stringer

25.1

Reinforcement profile

25.2

Reinforcement profile

26

Front side

27

Terminal profile

28

20 width

29

27 height

30

Sheet steel

31

30 lower side

32

Light width

33

Framework

34.1

Bottom wall part of 25.1

34.2

Bottom wall part of 25.2

35

Space

36.1

Width of 34.1

36.2

34.2 Width

37.1

Creased

37.2

Creased

37.3

Creased

38.1

25.1 vertical wall part

38.2

25.2 vertical wall part

39.1

Other wall part of 25.1

39.2

Other wall part of 25.2

40

Lateral gear element behind

40.1

Lateral gear element behind

40.2

Lateral gear element behind

41

40 width

42

Inclined surface of mesh behind

43

Free end of 40; 40.1, 40.2

44

Lower side of 34.1, 34.2

Four. Five

Height 23.1, 23.2

46

Height 25.1, 25.2

47

Recess

48

Recess

51

Edge of recess 47

52

Edge of recess 48

53.1

Top beam profile of 23.1

53.2

Top beam profile of 23.2

54.1

23.1 Bottom Stringer Profile

54.2

Lower beam profile of 23.2

55

Distance

56

27 lower wing

57

27 upper wing

58

27 front wing

59.1

Welded seam

59.2

Welded seam

59.3

Welded seam

61.1

Vertical wing

61.2

Vertical wing

62.1

Top profile part of 23.1

62.1

Top profile part of 23.2.

Claims (9)

1. Gate (20) of sheet steel (30) for scaffolding, work platforms, consoles, daisies and the like, in particular for overlapping bridges of scaffolding floors that have horizontal transitable surfaces of modular or system scaffolding, for example , for the bridging of assembly or disposal areas in corners of constructions and / or holes of or in wall areas, the gangway presenting a walkable surface (21) at whose longitudinal edges (22.1, 22.2) longitudinal lateral stringers are provided (23.1, 23.2) formed by folding, which respectively have at least one reinforcement profile (25.1, 25.2) formed by folding, which preferably extends mainly along the entire length of the gangway (20) and which has its front sides (26) metal end profiles (27) fixedly connected to the passable surface (21) and to the longitudinal lateral stringers (23.1, 23.2), which extend fundamentally along the entire width (28) of the gangway (20) and preferably having a height (29) corresponding to the width of light (32) between the lower side (31) of the steel plate (30) ) which forms the passable surface (21) and the at least one corresponding reinforcement profile (25.1, 25.2), forming the end profiles (27) and the longitudinal lateral stringers (23.1, 23.2) a frame (33), and being folded , respectively, at least one of the reinforcing profiles (25.1, 25.2) of the corresponding longitudinal side member (23.1, 23.2) forming a lower wall portion (34.1, 34.2) extending inwards, preferably approximately parallel to the passable surface (21), of which a corresponding vertical wall portion (38.1, 38.2) of the corresponding reinforcement profile (25.1, 25.2), which extends in the space (35), has been folded perpendicularly, respectively ) between the longitudinal lateral stringers (23.1, 2 3.2), of which another wall part (39.1, 39.2) of the corresponding reinforcement profile (25.1, 25.2) has been folded, respectively, which extends, respectively, outwards, characterized in that the other wall part ( 39.1, 39.2) of the corresponding reinforcement profile (25.1, 25.2) is realized, respectively, as a lateral gear element behind (40; 40.1, 40.2), which extends outwardly and that moves away from the passable surface (21). 2. Footbridge according to claim 1, characterized in that the rear engaging lateral element (40; 40.1, 40.2) is configured with a flat inclined engagement surface behind (42), which extends essentially along its entire width (41 ). 3. Footbridge according to claim 1 or 2, characterized in that the rear engaging side element (40; 40.1, 40.2) is made straight, essentially along its entire width (41). 4. Footbridge according to one of claims 1 to 3, characterized in that the rear engaging side element (40; 40.1, 40.2) extends towards the lower wall part (34.1, 34.2). 5. Gateway according to one of claims 1 to 4, characterized in that between the outer edge or the free end (43) of the rear gear side element (40; 40.1, 40.2) and the wall part (34.1, 34.2) opposite to this one of the reinforcement profile (25.1, 25.2) fundamentally no slit is formed or only a reduced slit. 6. Gateway according to one of claims 1 to 5, characterized in that the rear gear side element (40; 40.1, 40.2) is preferably supported with its free end (43) on the inner side (44) of the lower wall part (34.1, 34.2). 7. Footbridge according to one of claims 1 to 6, characterized in that the longitudinal lateral stringers (23.1, 23.2) have a height (45) of less than 60 mm. 8. Footbridge according to claim 7, characterized in that the height (45) of the longitudinal lateral stringers (23.1, 23.2) is approximately 45 mm. 9. Gateway according to one of claims 1 to 8, characterized in that the free height (46) of the reinforcement profile (25.1, 25.2) is greater than 0.3 times the height (45) of the longitudinal lateral stringers (23.1, 23.2 ), corresponding, in particular, approximately one third of the height (45) of the longitudinal lateral stringers (23.1, 23.2).