EP0670399B1 - Lifting scaffold platform - Google Patents

Abstract

Each scaffolding mast has at least one support profile, on which at least one first toothed bar is provided which meshes with gearwheels arranged on the work platforms. At least one second toothed bar (46) for a slide is provided, which has gearwheels in its drive system. On the scaffolding mast current rails (24,25) are provided and current take-offs (52) on the work platforms and the slide. The scaffolding mast has two support profiles (17) with toothed bars. A scaffolding mast transport device is couplable to the slide. A personnel and/or material lift is couplable to the slide and is pivotable to both sides of the mast towards the facade (15) of the building.

Description

The invention relates to a mast according to the preamble of claim 1.

From US-PS 4,293,054 a mast with two scaffolding masts is known, a rack being provided on the scaffolding masts, which meshes with a motor-driven gear. The gear wheel is arranged on a work platform, so that this work platform can be adjusted in height along the scaffolding mast by means of the driven gear wheel. It is also possible in this way to adjust the height of a working bridge between two masts by means of gears and gear drives assigned to the individual masts.

The mast, however, is built up in shots by placing the masts in shots by hand.

From DE-OS 35 26 105 a scaffold for repair work on facades and eaves is known, which has a walkable scaffold bridge between two mobile masts, the scaffold bridge at work height on rails or trusses attached there can be moved towards the facade.

DE-OS 31 14 602 describes a device for work scaffolding with a lifting and lowering work platform with associated safety device. The work platform is arranged between four recessed guide rails and connected to the guide rails on both sides by a lifting mechanism and a suspension. A support bar is arranged on both sides of the work platform, with the help of which the work platform is placed on the scaffolding towers. Drop pawls are arranged on the support bar, which prevents the working platform from falling by snapping into the recesses in the guide rails when the chain of the lifting mechanism breaks.

From DE-OS 34 15 074 an aerial work platform, in particular a work platform for construction workers is known. The aerial work platform with a height-adjustable work platform connected to a frame has a work platform with at least two cross beams which are arranged at a distance from one another and can be connected to one another by longitudinal beams and which are provided with guide members via which the cross beams are each adjustable in height on or in a stand.

The invention has for its object to provide a mast of the type mentioned in such a way that the scaffold builds up and dismantles itself by the scaffold's own facilities, so that comparatively few operators are required to build a relatively large scaffold. Likewise, it should be possible with the mast that, in the case of a mast with a multiplicity of scaffold masts arranged next to one another, at least one driving platform, or else several driving platforms, can be moved independently of one another along the scaffolding masts.

This object is achieved with the features of the characterizing part of claim 1.

In this way, a lifting scaffold is reached which can be assembled by a few people, in particular with the aid of the scaffold mast transport device coupled to the carriage, in that the carriage transports the individual scaffolding parts, in particular the scaffolding masts, in shots upwards along the scaffolding masts already attached to the facade. In particular, no auxiliary equipment, such as a crane or the like, is required to assemble and disassemble the scaffold.

This makes it possible for the driving platforms in a scaffolding field formed between two adjacent scaffolding masts to be adjustable in height independently of the driving platforms of the adjacent scaffolding field along the scaffolding masts, without the moving platforms of adjacent scaffolding fields interfering with one another, which means that the driving platforms overtake one another or can meet.

Instead of a support profile, there is also the possibility that the scaffold mast has two support profiles with racks.

It is recommended that the carriage is equipped with couplings in such a way that it can take on additional functions such as crane replacement, personnel lift, material lift and the like.

One of the devices that can be coupled to the slide is expediently a scaffold mast transport device. - It is therefore possible to use the sled along additional scaffolding masts along partially erected scaffolding masts to be transported upwards to further assemble the scaffold or vice versa to transport scaffold mast sections from top to bottom when dismantling the mast.

One of the devices that can be coupled to the slide can also be expediently designed as a personnel and / or material lift. - This allows people to drive or climb the scaffold when the scaffold is finished and it is also possible to transport the materials and tools required for the work to be carried out.

The personnel and / or material lift is expediently pivotable on both sides around the scaffolding mast towards the facade.

Sometimes it is useful that one of the devices that can be coupled to the sled is a crane. - This makes it possible to unload materials from the mast itself from trucks and the like, without the need for an additional crane or truck crane.

• a) Heben und Senken,
• b) Seitenverschieben nach rechts und links,
• c) Längsverschieben nach vorn und zurück,
• d) Neigen um eine horizontale Achse oben nach rechts und links,
• e) Drehen um eine vertikale Achse rechtsherum und linksherum und
• f) Schwenken um eine horizontale Querachse

durchzuführen und das Aufnehmen, Bewegen, Halten und Abgeben von Bauteilen zu ermöglichen.In a further embodiment of the invention, the mast can be designed so that the driving platforms are equipped with a positioning device for the precise manipulation of components, which can be moved with a movable carriage over the entire length and width of the driving platform. - With such a robot-like positioning device, there is the possibility of the movements

• a) lifting and lowering,
• b) shifting to the right and left,
• c) longitudinal displacement forward and backward,
• d) tilting to the right and left about a horizontal axis,
• e) rotating around a vertical axis clockwise and counter clockwise and
• f) pivoting about a horizontal transverse axis

perform and allow the picking up, moving, holding and dispensing of components.

The length of the driving platform can advantageously be freely determined between the scaffolding masts.

It is recommended that the platforms can be moved horizontally and parallel to the facade.

Furthermore, it is expedient if an elevator platform railing facing the facade is to be used to expand the stage floor towards the facade.

An electric or electrohydraulic drive for the gearwheels is expediently provided on the slide.

In a further embodiment of the invention, the mast can be designed so that the driving platforms have electrical or electro-hydraulic drives for driving the gear wheels.

Two gears are advantageously provided one above the other for each drive.

There is also the possibility that two gears are provided opposite each drive.

Two racks, in each of which a gearwheel runs, are expediently provided on the supporting profiles of the scaffolding masts.

However, it is also possible for at least one gear wheel to be provided to prevent the carriage and the platform from falling, or to be equipped with a device for this purpose.

To avoid accidents, it is recommended that one of the superimposed gears is provided to prevent the carriage and the platform from falling.

After setting up at least two parallel scaffolding masts, the first driving platform can be inserted between the scaffolding masts and, to put on the next scaffolding mast shot, move up to the upper end of the scaffolding masts that are already standing.

A fitter traveling in the driving platform is able to attach the next raised scaffold mast shot to the already standing scaffold mast and to the facade. After at least two scaffolding mast shots have been added, the fitter can use the platform to drive to the end point of the scaffolding masts that were previously raised and wait for the next scaffolding mast shot to be raised there for further extension. With an additional fitter for picking up the mast parts on the floor or on the platform, two fitter are therefore sufficient to quickly cover large facade areas with mobile scaffolding.

By moving the driving platforms on horizontal rails perpendicular to the facade wall and in the opposite direction, there is the advantage that there are no gaps between the facade and the driving platform that could cause a fall.

There is also the option of bypassing any projecting components on the facade.

This can also be achieved in that an additional piece of stage floor is created by folding the railing on the facade side of the driving platform towards the stage floor, which fills the space between the facade and the stage. This also has the advantage that after lowering the railing between the fitter and the facade, there are no more disturbing components of the driving platform.

Any number of lifting platforms can be moved independently of one another along the scaffolding masts between the individual scaffolding masts. Via the pantographs on the scaffolding mast, the driving platforms can be equipped with electricity for the tools of the fitters. The length of the platform between the masts is freely selectable via individually connected stage segments. This makes it possible that adjacent lifts do not interfere with their height adjustment. This means that neighboring lifts can overtake or encounter each other. Each of the scaffold bays formed by two neighboring scaffolding masts is completely independent of the scaffold bays adjacent to it with regard to the height adjustment of the driving platforms.

• a) Aufnehmen von Platten oder stabförmigen Bauteilen vom Boden oder vom Materiallift,
• b) Bewegen dieser Platten,
• c) genaues Positionieren dieser Bauteile und
• d) Abgeben dieser Bauteile nach dem Befestigen an der Fassade

ausführen können.Several platforms can be coupled to assemble large components. Positioning devices running on horizontal rails parallel to the facade are provided on the driving platform

• a) Picking up plates or rod-shaped components from the floor or from the material lift,
• b) moving these plates,
• c) exact positioning of these components and
• d) Deliver these components after fastening them to the facade

can execute.

After all scaffolding masts have been set up, the slide can be equipped with additional functions by means of several interchangeable modules, for example a crane boom, which can transport large and heavy components to the roof similar to an otherwise usual construction crane when a scaffolding mast extends above the roof, or one Passenger and / or material lift, which can not only move fitters and material between the individual driving platforms onto the roof, but can also be swung into the building or into the building through the openings in the building.

In a practical arrangement, a scaffold mast can be connected, for example, to a slide with a crane module and to any number of slides with lift modules, which can be moved independently of one another.

The invention is explained below with reference to an embodiment shown in the drawing.

Fig. 1

eine Vorder- und Seitenansicht auf den stehenden Mast des Hubgerüstes,

Fig. 2

eine Draufsicht auf den Gerüstmast gemäß Fig. 1,

Fig. 3

drei Ansichten des Schlittens, davon die Draufsicht mit Mast

Fig. 4

eine Draufsicht auf einen Gerüstmast mit beidseitig angeschlossenen Fahrbühnen,

Fig. 5

eine Draufsicht auf das Hubgerüst ähnlich Figur 4, mit Lift in Fahrstellung (rechte Darstellung) und in eingeschwenkter Stellung (linke Darstellung),

Fig. 6

eine Draufsicht auf das Hubgerüst mit angebautem Kran, im übrigen ähnlich Figur 5,

Fig. 7

eine Seitenansicht des Gerüstes mit Schlitten, Masttransportmodul und einem noch zu montierenden Mastteil sowie einer Vorderansicht des Masttransportmoduls mit Schlitten,

Fig. 8

eine Seitenansicht des Masttransportmoduls beim Aufnehmen eines noch zu nomtierenden Mastteiles und

Fig. 9

als Zusammenstellungszeichnung ein Hubgerüst mit vier nebeneinander angeordneten Gerüstmasten unter Bildung von drei zwischen je zwei benachbarten Gerüstmasten gebildeten Gerüstfeldern, in denen jeweils mehrere Fahrbühnen höhenverstellbar angeordnet sind und bei denen an den einzelnen Masten Schlitten höhenverstellbar vorgesehen sind.

It shows

Fig. 1

a front and side view of the standing mast of the mast,

Fig. 2

2 shows a plan view of the scaffolding mast according to FIG. 1,

Fig. 3

three views of the sled, of which the top view with mast

Fig. 4

a plan view of a scaffold mast with driving platforms connected on both sides,

Fig. 5

4 shows a top view of the mast similar to FIG. 4, with the lift in the driving position (right illustration) and in the pivoted-in position (left illustration),

Fig. 6

4 shows a plan view of the lifting frame with the crane attached, otherwise similar to FIG. 5,

Fig. 7

2 shows a side view of the scaffolding with a slide, mast transport module and a mast part still to be assembled, and a front view of the mast transport module with slide,

Fig. 8

a side view of the mast transport module when receiving a still to be nominated mast part and

Fig. 9

as an assembly drawing, a lifting scaffold with four scaffolding masts arranged next to each other, forming three scaffolding fields formed between two adjacent scaffolding masts, in which A plurality of lifting platforms are each arranged to be adjustable in height and in which sleds are provided to be adjustable in height on the individual masts.

The mast 10 shown in the drawing has a plurality of scaffolding masts 11, which stand on the floor 12 or on a platform located above the floor level and can be extended in sections are. Driving platforms 13 are provided between the scaffolding masts 11. The scaffolding masts 11 are fastened to the building facade 15 by means of a plurality of holding supports 14.

As can be seen in particular from Figures 1 and 2, the scaffold mast 11 consists of two support profiles 16, 17 and a corner profile 18, the support profiles 16, 17 and the corner profile 18 forming an isosceles triangle in plan view. The support profiles 16, 17 and the corner profile 18 are stabilized via transverse and oblique struts 19, 20, 21.

Driving profiles 22, 23 are provided on the support profiles 16, 17. In addition, a busbar 24 is provided on the struts 19 and a busbar 25 is provided on the struts 21.

As can be seen in particular and in detail from FIG. 2, the driving profile 22 is fastened to the inner profile flange 26 on the inner side of the support profile 16, while the free profile flange 27 is bent inwards by 90 °. On the free profile flange 27, a rack 28 is provided, in which a gear 29 of a slide 30 runs. A support wheel 31 is provided on the opposite side of the free flange 27.

The dash-dotted line 32 shown in the drawing (FIG. 4) represents a line of symmetry or, in plan view, a surface of symmetry between the left and the right area of the lifting mast 11 shown in FIG. 8. The components shown on the right-hand side correspond to the plane of symmetry 32 33, 34, 35, 36, 37 the components 26, 27, 28, 29, 31 shown on the left side of the plane of symmetry 32.

On the right side of the plane of symmetry 32 of FIG. 4, a driving platform 38 with railings 39, 40, 41 and with a displaceable railing 42 is arranged. A bearing block 44 is provided on the driving platform 38, on which two gear wheels 45 to be driven are provided, which run in a rack 46 of the support profile 17. Furthermore two opposite rollers 47, 48 are provided on the bearing block 44 and, in addition, a roller 50 in a further bearing block 49, which ensures that the gear 45 remains in constant contact with the rack 46. The gear 45 is driven via the shaft 51.

A current collector 52 is provided on the bearing block 44, which is held displaceably in the busbar 25 or slides in the busbar 25. Likewise, a pantograph 53 is provided on the carriage 30, which is firmly guided in the busbar 24 or slides in the busbar 24.

The relationships described above are the same on the left side of the symmetry surface 32. The driving platform 54 has railings 55, 56 which correspond to the railings 39, 41. The railing 57, which corresponds to the railing 42, is displaceable on the left side of the plane of symmetry 32 to the facade 15 and the folding railing 39 or 55 is lowered towards the facade, so that the driving platform 54 lies quite close to the facade 15, so that any Accidents are excluded.

Between the corner profile 18 and a dowel 58 inserted in the facade 15, the length-adjustable holding support 14 is arranged between a bearing 59 and a hook 60.

According to the illustration in FIG. 4, a motor 61 is provided which drives the drive shaft 51 via a gear 62 and via gear wheels 63, 64.

In addition, a lift 65 is arranged on the slide 30 in FIG. 5 and can be pivoted relative to the slide 30 in joints 66, 67. In the embodiment shown on the left, the lift 65 is pivoted by 90 ° with respect to the longitudinal orientation of the scaffolding around the joint 66.

Reference list

10th

Mast

11

Scaffolding mast

12th

ground

13

Driving platform

14

Support brackets

15

Building facade

16

Wearing profile

17th

Wearing profile

18th

Corner profile

19th

strut

20th

strut

21

strut

22

Driving profiles

23

Driving profiles

24th

Track

25th

Track

26

Profile flange

27

Profile flange

28

Rack

29

Rack

30th

carriage

31

Jockey wheel

32

Plane of symmetry

33

Component

34

Component

35

Component

36

Component

37

Component

38

Driving platform

39

railing

40

railing

41

railing

42

railing

43

---

44

Bearing block

45

gear

46

Rack

47

Roller

48

Roller

49

Bearing block

50

Roller

51

wave

52

Pantograph

53

Pantograph

54

Driving platform

55

railing

56

railing

57

railing

58

Dowels

59

camp

60

hook

61

engine

62

transmission

63

gear

64

gear

65

lift

66

joint

67

joint

68

door

69

door

70

crane

71

Crane boom

72

Bracket

73

to bake

74

to bake

75

wheel

76

Scaffolding mast shot

77

pole

78

slug

79

slug

80

axis

81

axis

82

disc

82a

position

83

Bearing block

84

joint

85

---

86

joint

87

---

88

---

89

Sprocket

90

Sprocket

91

Drive chain

5, the material and / or passenger lift 65 is aligned in the direction of the scaffold. The lift 65 has pivotable doors 68, 69 through which the individual stages can be operated or reached, provided the stage itself is not moved.

The arrangement shown in FIG. 6 differs from that shown in FIGS. 7 and 8 in that a crane 70 with a divided crane boom 71 is provided instead of the elevator 65. The other arrangements are the same or similar or known to the arrangements described above.

In FIG. 7, a clamp 72 is provided on the slide 30 of the scaffold mast 11, the two jaws 73, 74 of which can be opened and closed by a wheel 75. A scaffold mast section 76 is clamped between the two jaws 73, 74, which is pivoted by 180 ° relative to the scaffold mast 11 that has already been set up and can be raised in this state by means of the slide 30 and the pliers 72 and is pivoted back by 180 ° at the desired height , so that it is aligned with the already erected scaffold mast 11 and can be placed on it and connected to it.

The carriage 30 is shown in detail in FIG. A rod 77 is to be driven via the motor 61, which has two worms 78, 79, via which the four gear wheels 29 are to be driven by means of axes 80, 81. The support rollers are also shown.

A round disk 82 is provided in FIG. 7, which is fastened to the pliers 72 of the slide 30. A bearing block 83 is provided on the disk 82, on which the bearing block 85 is articulated in a joint 84. A multi-stage cylinder 88 is located in a joint 86 of the plate 82 and a joint 87 of the bearing block 85 provided, with the aid of which the joint 86 can be pivoted on a circular arc around the joint 84 until the disk 82 assumes the position provided perpendicularly thereto.

In addition, a drive chain 91 is provided between two sprockets 89, 90 so that a positive synchronism can be achieved here.

Claims (18)

1. Lift frame (10) comprising a plurality of frame uprights (11), which are shoot-like extendable and between which are height-variably situated platforms (13), wherein the frame uprights may be fixed on the facade of a building by a plurality of holders,
   characterised in

   - that every frame upright (11) comprises at least one carrier section (16) on which is provided at least one first rack (28) with which engage pinions (29) situated on the movable platforms and driven by drives (61),

   - that at least one second rack (46) is provided for every frame upright, along which rack (46) is height-displaceably arranged a carriage (30) with pinions (29) and a drive for these pinions (29), and

   - that current supply bars (24, 25) are provided on the frame upright (11) and current collectors (52, 53) are provided on the movable platforms (38, 54) and the carriage (30).
2. Lift frame according to claim 1, characterised in that the frame upright (11) comprises two carrier sections (16, 17) with racks (28, 46).
3. Lift frame according to claim 1 or 2, characterised in that one of the devices which can be coupled to the carriage (30) is a frame upright transport device.
4. Lift frame according to any one of the preceding claims, characterised in that one of the devices which can be coupled to the carriage (30) is a lift for persons or material (65).
5. Lift frame according to claim 4, characterised in that the lift for persons or material is tiltable to both sides about the frame upright (11) towards the facade (15).
6. Lift frame according to any one of the preceding claims, characterised in that one of the devices which can be coupled to the carriage (30) is a crane (70).
7. Lift frame according to any one of the preceding claims, characterised in that the movable platforms (38, 54) is provided with a positioning device which is movable along the whole width of the movable platform (38, 54) by a movable mounting.
8. Lift frame according to any one of the preceding claims, characterised in that the movable platform (38, 54) is along its length freely fixable between the frame uprights (11).
9. Lift frame according to any one of the preceding claims, characterised in that the movable platforms (38, 54) are movable on rails horizontally and parallel to the facade (15).
10. Lift frame according to any one of the preceding claims, characterised in that a guard rail (39, 40, 41, 42, 55, 56, 57) of the movable platform pointing to the facade (15) may be used for widening of the platform floor towards the facade (15).
11. Lift frame according to any one of the preceding claims, characterised in that an electric or electrohydraulic drive for the pinions (29) is provided on the carriage (30).
12. Lift frame according to any one of the preceding claims, characterised in that the movable platforms (38, 54) have electric or electrohydraulic drives for driving the pinions (45).
13. Lift frame according to any one of the preceding claims, characterised in that two pinions (29, 45) are provided one above the other for every drive.
14. Lift frame according to any one of claims 1 to 12, characterised in that two pinions (29, 45) are provided opposite to each other for every drive.
15. Lift frame according to any one of the preceding claims, characterised in that two racks (28, 46), positioned opposite to each other, are provided on every carrier section (16, 17) of the frame uprights (11), one pinion (29, 45) running in every rack.
16. Lift frame according to any one of claims 1 to 14, characterised in that two racks (28, 46), positioned opposite to each other, are provided on every carrier section (16, 17) of the frame uprights (11), more than one pinion (29, 45) running in every rack.
17. Lift frame according to any one of the preceding claims, characterised in that at least one pinion (29, 45) is provided to safeguard against the crash of the carriage (30) and the movable platform (38, 54) or a device is provided for this purpose.
18. Lift frame according to any one of the preceding claims, characterised in that between the individual frame uprights any number of movable platforms may be displaceable along the frame uprights independently of each other.

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