EP1728961A2 - Smoke screen - Google Patents

Abstract

Smoke apron (11) is rolled around a drum (1) equipped with mounting and drive means (27). Arrangement has first (21) and second rollers rotatably arranged along the axle with a lengthwise space between them smaller than the length of the drum. It has at least one further roller (24) rotatably located obliquely to the first and second rollers. Said rollers are so arranged that the drum can be laid on them in a stable position and kept stable between two axial limit stops. At least one of the rollers is connected with the drive means to transmit the torsional motion.

Description

The invention relates to a smoke trap arrangement according to the preamble of claim 1.

Such known from the practice smoke skirt assemblies include a roller on which a smoke skirt is wound from flame retardant material, which is unwound in a fire alarm to separate parts of the building or to form smoke sections.

In a known smoke trap arrangement, a bearing of the roller and its drive means are arranged substantially within the roller and led out for mounting partially from this side. Because of this lateral lead-out, the roller with its storage and with their drive means is difficult to assemble. In addition, the space required by the side of the roller for accommodating the led out of her parts is relatively large.

The present invention has for its object, while avoiding the disadvantages of the known smoke trap arrangement to train them so that it can be easily mounted and the side of the roller occupies little space.

This object is achieved by the formation of the smoke skirt assembly with the features of claim 1.

In this arrangement of at least three rollers outside the roller, the roller can be placed on the rollers in a simple assembly step. After completion of the assembly, the roller can be rotated by at least one of these rollers, which is driven by the drive means, to wind the smoke skirt. The drive means are arranged externally next to the roller and therefore do not require any torque-transmitting connection means or a mounting space at the end faces of the roller. The drive means may in particular be located below or on the longitudinal side of the roller. At its end faces, the roller is enclosed between two axial limits, which can be close to the end faces of the roller, can be flat and in particular consist of sheet metal.

The roller and the rollers are particularly advantageous housed in two cladding parts made of sheet metal, as stated in claim 2. In the first, on a longitudinal side partially open trim part, the rollers are arranged, which receive the roller. With the second trim panel removed, which in the mounted state can close off the trim panel which is partially open on one longitudinal side, the roll can simply be laid onto the castors in the first trim panel or removed from these castors.

The rollers are offset from the frontal Axialbegrenzungen away towards the roller center, whereby the load and deflection of the roller can be kept low.

Further, according to claim 2, a gap is left in the bottom region between the first trim part and the second trim part mounted on it, to which the smoke skirt is guided and through which it passes downwards. The arranged within the trim parts of the smoke flap assembly are largely protected against external influences, including the axial limitations of the roller can contribute to the end faces.

The parts arranged inside the first trim part include, in particular, the transverse plates on which the rollers are mounted and on which the drive means are mounted.

The cross plates have according to claim 3 preferably trough-shaped recesses, which allow an insertion of the roller on the rollers and removal of the roller from the rollers from above and laterally.

The transmission of torque from the drive means, in particular an electric geared motor to the roller takes place at this only by friction with the driven roller or the driven rollers. For a possible slip-free torque transmission between the roller or rollers and the roller, the outer circumference of the roller expedient according to claim 4 has a knurling.

For uniform transmission of torque from the drive means to the roller sit according to claim 5, the first roller and the second roller preferably on a drive shaft which can be coupled to the drive means and which is mounted in two of the cross plates.

According to claim 6, in addition to the driven rollers, two only supporting rollers, namely the third and the fourth roller on the roller respectively in substantially the same plane as the first driven roller and the second driven roller, and thus as the two driven rollers be axially offset in the longitudinal direction of the roller. Thus, the roller is supported on both sides in two axially spaced peripheral regions in each case by a driven roller and a non-driven roller and it is achieved a particularly stable support and uniform power transmission.

According to claim 7, the drive shaft is on the one hand, ie at one of its ends via a coupling with a geared motor in conjunction and on the other hand, ie at its other end, with a centrifugal brake. This results in a good use of space within the trim parts and good accessibility of the geared motor, the clutch and the centrifugal brake. With these elements, the roller can be reliably operated in a conventional manner: Normally, in the idle state, if there is no fire alarm, the smoke skirt largely wound on the roller. In this case, only a portion of the smoke skirt is guided through the slot between the trim parts to the outside and depends on the outside burdened by the force of a weight tube down. In this initial state, the roller is blocked by the geared motor. In case of fire alarm, the clutch is opened, which can be done in an electromagnetic clutch simply by switching off a stream, and the smoke skirt rolls off under the force of the weight tube automatically to form a smoke section. The centrifugal brake has the function of slowing down the smoke skirt over the roller, so there is no risk of injury during unwinding. - Only when the initial state of the smoke skirt assembly to be restored, the clutch closed and turned on the geared motor, which rotates the roller over the driven rollers, so that the roller winds the smoke skirt and thus pulls the outer end with the weight tube.

The above arrangement of the clutch, the gear motor and the centrifugal brake can be easily realized with cross plates according to claim 9.

Together with the two transverse plates, in which the drive shaft is mounted, this results in a stable arrangement of at least four transverse plates according to claim 9: Thereafter, the drive shaft may be mounted at its first end at least in a third cross plate which is parallel to the first cross plate and is arranged adjacent to this. Furthermore, the drive shaft may be mounted at its second end at least in a fourth transverse plate, which is arranged parallel to the second transverse plate and adjacent thereto. The first cross plate and the third cross plate thus form a stable group, which can be supplemented with a fifth, central cross plate, at one end of the drive shaft with a roller. Similarly, at the other end of the drive shaft with a second roller, the second cross-plate, the fourth cross-plate, if necessary, with a sixth, central cross-plate a second group. In both groups, the transverse plates are arranged parallel to one another, forming clearances.

The above-mentioned guidance of the smoke skirt from the roller to the gap is carried out according to claim 10 in a low-friction manner by a simple, smooth fold on a vertical side wall on the longitudinal side of the first trim part.

Particularly advantageously, the roller for attachment of one end of the smoke skirt has a peripheral recess which extends parallel to a roll axis and is shaped so as to be suitable for receiving a receiving tube to which an inner end region of the smoke skirt is attached. To close the recess in order to form the most uniform outer periphery of the roller, serves a clamping profile, in which a reaching into the recess web, and at a distance to this two clamping tongues are formed between a first wall of the recess and one in the recess in the distance to the first wall shaped survey can be spread apart. Thereby, the clamping profile in the peripheral recess under pressure of the exception tube to the web and over this and the smoke skirt on a second wall of the peripheral recess, which is opposite to the first wall, are clamped. The recess thus ensures, in conjunction with the clamping profile, that the inner end portion of the smoke skirt with the receiving tube can be easily attached to the outer circumference of the roller and still be held securely on the roller.

In particular, the clamping tongues of the clamping profile can be spread apart by a dowel pressed or hammered in between the clamping tongues for reliable locking of the clamping profile and thus also of the receiving tube with the inner end region of the smoke skirt.

For safe transmission of the roller driving torque of the driven roller or driven rollers, also in the region of the clamping profile, this has in continuation of the curved outer periphery of the roller on a curved outer side, which is knurled like the curved outer periphery of the roller.

For uniform drive of the roller in the region of the clamping profile, in particular at the point in which the inner end portion of the smoke skirt is inserted into the recess of the roller, the outer circumference or the knurling of the roller is reduced by the thickness of the smoke skirt.

In terms of manufacturing and assembly, the roller and the clamping profile are made of aluminum. So that the smoke skirt assembly nevertheless satisfies legal requirements, and withstands sufficiently long high temperatures, which can not be reliably realized with aluminum, the receiving tube as the trim parts are made of steel. This ensures that the inner end portion of the smoke skirt with the receiving tube can not slip out of the gap between the two trim parts even when the clamping profile of the roller under extreme long-term exposure to heat dissolves.

Figur 1

eine Seitenansicht auf die Rauchschürzenanordnung im Montagezustand,

Figur 2

eine Seitenansicht auf die Rauchschürzenanordnung gemäß Figur 1, jedoch im weitgehend montierten Zustand,

Figur 3

eine Seitenansicht auf die Rauchschürzenanordnung gemäß den Figuren 1 und 2, jedoch in einem noch weiter fortgeschrittenen Montagezustand,

Figur 4

einen Schnitt durch die Rauchschürzenanordnung in der Schnittebene A-A in Figur 2,

Figur 5

in größerer Darstellung in einer Seitenansicht eine Einzelheit der Rauchschürzenanordnung, nämlich in dem Bereich einer peripheren Ausnehmung in der Walze mit eingelegtem Aufnahmerohr und mit einem Klemmprofil als Verschluß der Ausnehmung und

Figur 6

eine weitere Einzelheit der Rauchschürzenanordnung in größerer Darstellung als Seitenansicht, nämlich im Bereich der Auflage der Walze auf einer diese antreibenden Rolle.

An embodiment of the invention will be described below with reference to a drawing with six figures, from which further advantageous details of the invention may result. It shows:

FIG. 1

a side view of the smoke flap assembly in the assembled state,

FIG. 2

3 is a side view of the smoke flap arrangement according to FIG. 1, but in the largely mounted state,

FIG. 3

3 shows a side view of the smoke flap arrangement according to FIGS. 1 and 2, but in an even more advanced installation state,

FIG. 4

a section through the smoke flap arrangement in the sectional plane AA in Figure 2,

FIG. 5

in a larger view in a side view of a detail of the smoke flap assembly, namely in the region of a peripheral recess in the roller with pick-up tube and with a clamping profile as a closure of the recess and

FIG. 6

a further detail of the smoke flap assembly in a larger representation than side view, namely in the region of the support of the roller on a driving this role.

In the figures, 1 denotes a roller of a smoke skirt assembly, which is formed substantially as a hollow cylinder with internally shaped stiffening ribs 2, 3, 4. In opposing pairs of grooves, e.g. 5, 6, if necessary, further stiffening plates can be inserted. A cylindrical outer periphery 7 of the roller 1 has a peripheral recess 8 which runs parallel to a central fictitious roller axis. The roll axis is referred to as fictitious, because although the roll 1 can rotate about this axis, but the axis is not materialized and thus can not serve for the storage of the roller or its drive.

The peripheral recess 8 is provided for receiving a receiving tube 9 which is inserted through a closed inner end portion 10 of a smoke skirt 11 made of non-flammable material, see Figure 5. The peripheral recess 8 can be closed by a clamping profile 12, whereby the cylindrical shape of the outer periphery 7 is largely completed.

For the rotatable mounting of the roller 1 and to its drive to wind the smoke skirt, serves an arrangement of rollers in cross members, which are arranged in a first trim part 13 made of sheet metal.

FIG. 1 shows an outer transverse plate 14 and FIG. 4 shows, in addition to the transverse plate 14, further spaced transversal transverse plates 15, 16, 17, 18 and 19, whereby the transverse plates 14, 15, 16 on the one hand and 17, 18, 19 on the other hand each form a group in which they are arranged relatively close to each other at a mutual distance. It should be noted at this point that a first cross plate 14 and a third cross plate 16 are referred to as adjacent in this application, although there is still another fifth cross plate 15 between these two cross plates. The same applies to the transverse plates 17, 18, 19 of the second group. In detail, the arrangement of the transverse plates with respect to the roller 1, in particular their longitudinal extent, from Figure 4, from which it is also apparent that the groups transverse plates 14, 15, 16 and 17, 18, 19 not directly at the ends of Rollers 1, but at a distance to these are. All transverse plates have trough-shaped recesses in order to receive the roller 1, as shown in FIGS. 2, 3 and 4, wherein the roller 1 projects beyond the outer transverse plates 14, 19 on both sides. The shape of a trough-shaped recess is shown specifically in FIG. 1 to the recess 20 of the transverse plate 14.

To accommodate the roller 1, to its rotatable mounting and to its drive serve the above-mentioned rollers which are mounted on the cross plates. In detail, two rollers 21 and 22, see Figure 4, connected to a drive shaft 23 which is rotatably supported at least in the cross plates 16 and 17. As Figure 1 shows, is transversely to the drive roller 21 offset another roller 24, while still another role, the can be arranged correspondingly with respect to the roller 22, is not visible in the drawing. The other rollers, for example 24, as well as the rollers 21 and 22 between the cross plates 15, 16 and 17, 18 may be arranged. The seated on the drive shaft 23 rollers 21, 22 may be referred to as drive rollers and the other rollers, which are not driven, as support rollers.

For example, as shown in Figure 2, the roller 1 can be stably placed on the rollers so that they can rotate in the position shown in Figure 2 on the rollers and together with these, without being pulled out of this position by the smoke skirt 11 ,

So that the roller 1 also reliably retains its axial position during rotation and possibly not quite uniform loading, axial limitations 25, 26 are provided in the form of metal sheets, see FIGS. 3 and 4.

To drive the inserted into the transverse plates 14 to 19 roller 1 to wind the smoke skirt 11, serves a geared motor 27 which is mounted on the cross plate 14 and is connected via a coupling 28 to the drive shaft 23 in torque transmitting connection. On the other hand, a centrifugal brake 29 is mounted on the outer cross plate 19, which is also connected to transmit torque to the drive shaft 23. With the centrifugal brake 29, the roller 1 can be braked automatically when the smoke skirt 11 is deducted too quickly at fire alarm after opening the clutch 21 under the force of a weight tube 30 at an outer end 31 of the smoke apron. The gear motor 27 is, as far as it is not self-locking, provided with a brake 27a.

In the following, more detail is given to the attachment of the inner end portion 10 of the smoke skirt 11 on the roller 1, which has the peripheral recess 8 for this purpose, which is completed by inserting the end portion 10 of the smoke skirt 11 to the receiving tube 9 with the clamping profile 1 2 , as mentioned above:

For this purpose, a protrusion 32 is formed between the first wall 33 of the recess and a second wall 34 of the recess arranged opposite the recess 8.

The clamping profile 1 2, which virtually completes the outer circumference 7 of the roller 1 in the region of the recess 8 and closes the recess 8, has an inner web 35 which is adjacent to the second wall 34 of the recess and at a distance from the web 35 two clamping tongues 36, 37, which are conically shaped in its lower portion and are adapted to engage in recesses 38, 39 of the first wall 33 and the elevation 32 when the clamping tongues are spread apart. For this purpose, from the opposing inner sides of the clamping tongues 36, 37 shell-shaped depressions 40, 41 are formed, which are adapted to receive a cylindrical dowel pin between them, which spreads the clamping tongues 36, 37 apart. In the latter state of the clamping tongues, the clamping profile 12 and the receiving tube 9 with the inner end portion 10 of the smoke skirt 11 are clamped in the peripheral recess 8, as shown in detail in Figure 5.

From Figure 5 can be further seen that the outer periphery 7 of the roller 1 and the outer circumference complementary outer side 1 2a of the clamping profile 12 are provided with a knurling. In a region 42, on which the smoke skirt 11 on the outer circumference 7 of the roll 1 for conditioning reaches, this outer circumference or the knurling of the roller is withdrawn so far that the outer side of the clamping profile 12 connects seamlessly to the surface of the smoke skirt 11 in the area 42. Thus, a reliable continuous drive of the roller by the driven rollers 21, 22 is also achieved when the area 42 is moved over these rollers.

The further course of the smoke skirt is apparent from Figures 2 and 3. From these it can be seen that the smoke skirt under the force of a weight tube 30 which is attached to the outer end 31 of the smoke skirt 11, of the oblique course in the region of the roll. 1 is deflected vertically downwards. The deflection point is realized by a fold 43 of a vertical side wall on the longitudinal side of the first trim part 13. From there, therefore, the smoke skirt 11 extends downwards, through a gap 44 which is formed below between the first trim part 13 and a second trim part 45, when it is placed on the first trim part.

The smoke flap arrangement is held on carrier profiles 46, 47, to which in particular the transverse plates 14 to 19 can be attached. After assembly of the rollers, for example 21, 22, 24, the roller 1 can be placed on the rollers and the smoke dam assembly can be completed by the first trim part 13, the axial boundaries 25, 26 and the second trim part 45.

LIST OF REFERENCE NUMBERS

1

roller

2

rib

3

rib

4

rib

5

groove

6

groove

7

outer periphery

8th

peripheral recess

9

receiving tube

10

inner end area

11

smoke barrier

12

clamping profile

12a

outside

13

1st fairing part

20

trough-shaped recess

21

role

22

role

23

drive shaft

24

role

25

axial limitation

26

axial limitation

27

gearmotor

27a

brake

28

clutch

29

centrifugal brake

30

weight tube

31

outer end

32

survey

33

1st wall of the recess

34

2nd wall of the recess

35

web

36

clamping tongue

37

clamping tongue

38

deepening

39

deepening

40

cup-shaped recess

41

cup-shaped recess

42

Area

43

fold

44

gap

45

2nd fairing part

46

carrier profile

47

carrier profile

Claims (16)

Smoke apron arrangement with a roller (1) on which a smoke apron (11) can be wound up and which is provided with a bearing and with drive means (27, 28),
characterized,
in that the smoke damper arrangement comprises a first roller (21) and a second roller (22) which are arranged coaxially at a longitudinal distance rotatable relative to each other, which is smaller than the length of the roller (1), and at least one third roller (24) transversely is rotatably arranged to the first roller (21) and the second roller (22), in such a way that the roller (1) in a stable position on the rollers (21, 22, 24) can be placed in which they between two Axialbegrenzungen is maintained, and that at least one of the rollers (21, 22, 24) is in torque-transmitting connection with the drive means. Smoke apron arrangement according to claim 1,
characterized,
in that the roller (1) and the rollers (21, 22, 24) are arranged in a first casing part (13) which is partially open on one longitudinal side, that a second casing part (45) on the longitudinal side of the first casing part, leaving a gap ( 44) in the bottom region between the first trim part (13) and the second trim part (45) can be mounted, that in the first trim piece cross plates (14 - 19) are arranged, on which the rollers (21, 22, 24) are mounted and the drive means (27, 28) are mounted, and that the smoke skirt (11) is guided to the gap (44) through which it passes. Smoke apron arrangement according to claims 1 and 2,
characterized,
in that the transverse plates (14-19) have recesses (20) which allow the roller (1) to be placed on the rollers (21, 22, 24) and to remove the roller (1) from the rollers (21, 22, 24) and are substantially trough-shaped for this purpose. Smoke apron arrangement according to claim 3,
characterized,
that the roller (1) has a knurling on its outer circumference (27). Smoke apron arrangement according to at least one of claims 1 to 4,
characterized,
in that the first roller (21) and the second roller (22) are seated on a drive shaft (23) which is mounted in two of the transverse plates (14-19). Smoke protection arrangement according to claims 1 and 5 and optionally at least one of claims 2 to 4,
characterized,
in that the first roller (21) and the third roller (24) are arranged essentially in a first plane and that a fourth roller is arranged coaxially with the third roller (24) substantially in a second plane in which the second roller (FIG. 22) is located. Smoke apron arrangement according to claim 5,
characterized,
that the drive shaft (23) on the one hand via a coupling (28) with a gear motor (27) is in communication and on the other hand with a centrifugal brake (29) is connected. Smoke apron arrangement according to claim 7,
characterized,
in that the drive shaft (23) is connected at its first end via the coupling (28) to the geared motor (27) mounted on a first transverse plate (14) and that the centrifugal brake (29) is connected to a second end of the drive shaft (23) is connected and attached to a second cross-plate (19). Smoke apron arrangement according to claim 8,
characterized,
in that the drive shaft (23) is mounted at its first end at least in a third transverse plate (16) which is parallel to the first transverse plate (14) and adjacent thereto, and that the drive shaft (23) at least at its second end a fourth transverse plate (17) is mounted, which is parallel to the second transverse plate (19) and arranged adjacent thereto. Smoke protection arrangement according to claim 1 and optionally one of claims 2 to 9,
characterized,
in that the guide of the smoke skirt is arranged between the first trim part (13) and the second trim part (45) Gap is formed by a fold of a vertical side wall on the longitudinal side of the first trim part (13). Smoke apron arrangement according to at least one of the preceding claims,
characterized,
in that the axial limits (25, 26) are designed as sheets which are placed on open end faces of the first trim part (13) and of the second trim part (45). Smoke apron arrangement according to at least one of the preceding claims,
characterized,
in that the roller (1) has a peripheral recess (8) which is parallel to a roller axis and is adapted to receive a receiving tube (9) to which an end region (10) of the smoke skirt (11) is attached and in which the peripheral The recess (8) can be closed by a clamping profile (12), in which a web (35) reaching into the recess (8) and at a distance therefrom two clamping tongues (36, 37) are formed, which are arranged between a first wall (33). the recess and a in the recess (8) at a distance from the first wall (33) formed elevation (32) are spread open, whereby the clamping profile (12) in the peripheral recess (8) under pressure of the receiving tube (9) to the web (35) and on this and the smoke skirt (11) to a second wall (34) of the peripheral recess, which is opposite to the first wall (33), can be clamped. Smoke apron arrangement according to at least one of the preceding claims,
characterized,
in that the clamping tongues (36, 37) can be expanded by a dowel pin pressed in between the clamping tongues (36, 37). Smoke apron arrangement according to at least one of claims 12 and 13,
characterized,
in that the clamping profile (12) has a curved outer side (12a) which, like the curved outer periphery (7) of the roller (1), is knurled. Smoke apron arrangement according to claim 14,
characterized,
that the outer circumference (7) or the knurling of the roller (1) in a region (42) in front of the peripheral recess (8) is reduced by a thickness of the smoke skirt (11). Smoke protection arrangement according to claims 1 and 12 and optionally at least one of claims 2 to 11, 13 to 15,
characterized,
in that the roller (1) and the clamping profile (12) are made of aluminum, and in that the receiving tube (9) and the covering parts (13, 45) are made of steel.

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