EP2058615A2 - Flame testing oven - Google Patents

Abstract

The fire testing furnace for the fire behavior of building materials and -component, comprises an open chamber, in which the fire testing takes place, and a tipping frame (2) arranged at the open chamber, an operating device (10) intended for moving the tipping frame along the movable axis, and two slide rails (6). The tipping frame contains another operating device (14) for controllably tilting the tipping frame and the open chamber around a tiltable axis. The open chamber is arranged over a rotational drive around an axis turnable on the tipping frame. The fire testing furnace for the fire behavior of building materials and -component, comprises an open chamber, in which the fire testing takes place, and a tipping frame (2) arranged at the open chamber, an operating device (10) for moving the tipping frame along the movable axis, and two slide rails (6). The tipping frame contains another operating device (14) for controllably tilting the tipping frame and the open chamber around a tiltable axis. The open chamber is arranged over a rotational drive around an axis turnable on the tipping frame. The operating devices (10, 14) are controllably operatable separately from each other or together. The operating devices are gear rack/pinion units, by which a drivable pinion intervenes in a gear rack. The gear rack for a longitudinal shift of the frame on a sliding rail and/or a gear rim is provided with a pinion gear for tilting. The gear rim for tilting the tipping device is aligned with its crown gear axis aligned to a tilt axis of the tipping device. The gear rack is arranged on the slide rails and on the tipping frame of the drivable pinion. The rotational axis of the rotating device is arranged parallely to the shifting axis and/or shifting device of the operating device. The tipping frame is formed in cross-section in an L-shape, through which a long tipping frame area (3) and a small tipping frame area (4) are formed. The tipping frame area is formed from parallely arranged steel profiles. The fire testing furnace has a glide rail and/or a mounting rail, on which the tipping frame is formed with the tipping frame area in directly or indirectly overlying manner. The tipping frame is shiftably arranged along the rails with the operation device on the glide- and/or the mounting rail. The piston cylinder unit is guided on the rails and/or a base, on which the rails are arranged with a first bearing (12). A second bearing (13) and/or joint is present on the tipping frame on the lower side of the lower tipping frame area and in a surface of an edge, which is formed by the tipping frame surfaces, and on which the operation device is guided. The operation device comprises a first bearing and/or joint on the floor of the positioning surface and is guided with a second bearing on to the tipping frame surface. The second bearing is removed from the bearing in an area of the tipping frame surface and is removed with respect to the length of the tipping frame surface in relation to the L-shaped design more than half of the stretch of the total angle of the tipping frame surface. The tipping frame is guided with bearings in the slide rails. A cross girder is intended, on which the steel beam of the tipping frame surface is formed. A roll intervenes into the rails by the cross bars. Additional rolls are engaged in the rails so that the tipping device is guided on both sides of the slide rails. The tilting frame surface has a carrying mechanism for the rolls on the lower side and above the rails. The rolls are arranged in the area of a free end removed from the bearing.

Description

The invention relates to a fire test furnace according to the preamble of claim 1.

DIN 4102 relates to the fire behavior of building materials and components, whereby such building materials and components with regard to the combustibility of building materials, the fire resistance of the components according to classes and the tightness of the closures of openings are classified and tested according to the state building regulations. The components are tested on the basis of DIN 4102 - Fire behavior of building materials and components. As a result, the fire resistance class and the classification of building materials are certified with regard to their combustibility and flammability.

For this purpose, a component to be tested in a fire test a temperature stress is tested according to a standard temperature curve, the test in a practical installation (connections, joints, etc.) takes place. Accordingly, fire testers are needed for such tests, for example, have a height of about 1.50 m, a width of about 1.25 m and a depth of about 1.75 m, fire testers for walls and ceilings are distinguished , Thus, there are two different fire testers as so-called wall test stands or ceiling test stands.

The object of the invention is to provide a fire test furnace, in the flexible position-dependent, the different fire tests can be performed.

The object is achieved with a fire test furnace with the features of claim 1.

Advantageous developments are characterized in the dependent claims.

According to the invention, a fire test furnace is tiltably designed such that it can be tilted as a wall test rig to a ceiling test rig with the same Prüföffnungsgröße. By tilting and Verstellkonstruktion the fire test furnace according to the invention, a test furnace can be arbitrarily moved and tilted for the oven position wall, ceiling and 45 ° test rig. Up to now, three individual furnaces have been required for these three test positions, so that a required investment and, above all, a required installation space can be greatly reduced.

In the invention, a rigid tipping frame made of steel profiles in L-shape is formed. In these rigid tilting frame, the actual test stand, in which the wall test is performed, put into it and welded to the tilting frame.

From a certain position of the wall test bench can be moved horizontally by two hydraulically operated differential cylinders, one per side, the test stand. The test stand is in this case horizontally guided and moved by an impeller per side on a steel cross member at the rear outer corner point of the rigid frame.

If both differential cylinders are extended in length, the test bench can be equipped with two single-sided telescopic cylinders, one per side, lowered to the ceiling test bench. The two telescopic cylinders are held in a pit arranged under the actual test bench in two steel profiles with a corresponding support structure.

To raise the test bench again from the ceiling test bench to the wall test stand, the two telescopic cylinders are first fully extended, the test bench then lingers in an inclined position, then the test bench is returned to the position as a wall test bench by retracting the differential cylinder.

Advantageously, the fire test furnace according to the invention for the classification of fire protection in NRWGs (natural smoke and heat exhaust ventilation devices) can be brought as a roof installation in a 45 ° position. For this purpose, the telescopic cylinders are lowered in the oven position wall test stand until the required 45 ° position is achieved. In order to maintain freedom of load for all hydraulic cylinders in this position, the test stand including the rigid frame can be held in the 45 ° position by two steel supports.

The piston-cylinder units used are, as already stated, telescopic cylinders in order to ensure the appropriate stroke lengths.

In a somewhat simplified embodiment, the longitudinal displacement of the furnace via a rack / pinion engagement is ensured, wherein either the pinion or the rack on the L-shaped frame and the corresponding element are arranged correspondingly fixed to a foundation. In this embodiment, the tilting can take place in that at least one arcuate sprocket is present, which is arranged either on the L-shaped frame or on a foundation and in which a corresponding pinion engages, wherein the Pinion is arranged on each corresponding element. Advantageously, the sprocket is arranged so that it is attached to the L-shaped frame, wherein the sprocket axis is aligned with a tilting axis of the L-shaped frame.

Figur 1:

die erfindungsgemäße Vorrichtung in einer stark schematisierten Prinzipskizze in einer ersten Stellung;

Figur 2:

die Vorrichtung nach Figur 1 in einer zweiten, um 45° verschwenkten Stellung;

Figur 3:

die Vorrichtung nach Figur 1 in einer um 90° verschwenkten Stellung;

Figur 4:

die Vorrichtung nach Figur 1 in einer gegenüber Figur 2 um 90° verschwenkten Stellung;

Figur 5:

die Vorrichtung nach Figur 1 in einer Ansicht von hinten auf die Rückseite des Ofens;

Figur 6:

die Vorrichtung nach Figur 1 in einer Ansicht von hinten in einer weiteren vorteilhaften Ausführungsform;

Figur 7:

eine weitere vorteilhafte Weiterbildung der Vorrichtung nach Figur 1 in einer Ansicht von hinten auf die Rückseite des Ofens.

The invention will be explained by way of example with reference to a drawing. It shows:

FIG. 1:

the device according to the invention in a highly schematic schematic diagram in a first position;

FIG. 2:

the device after FIG. 1 in a second, pivoted by 45 ° position;

FIG. 3:

the device after FIG. 1 in a position pivoted by 90 °;

FIG. 4:

the device after FIG. 1 in one opposite FIG. 2 pivoted by 90 ° position;

FIG. 5:

the device after FIG. 1 in a view from the back on the back of the stove;

FIG. 6:

the device after FIG. 1 in a view from behind in a further advantageous embodiment;

FIG. 7:

a further advantageous embodiment of the device according to FIG. 1 in a view from the back on the back of the oven.

The fire test furnace 1 according to the invention has a rigid tilting frame 2. The tilting frame 2 is preferably formed in cross-section L-shaped. The tilting frame 2 consequently has a long tilting frame surface 3 and a short tilting frame surface 4, wherein the Kipprahmenflächen 3, 4 each need not be formed flat, but from a plurality of parallel steel profiles 5 (in FIG. 5 the steel profiles of the tilting frame surface 4) are visible.

In addition, the fire test furnace 1 comprises at least one sliding or mounting rail 6, on which the tilting frame 2 with the Kipprahmenfläche 4 is formed directly or indirectly resting.

The tilting frame 2 can be displaced by means of at least one first piston-cylinder unit 10 on the slide or support rail 6 along the slide or support rail 6. For this purpose, the piston-cylinder unit 10 is hinged on the one hand to the bottom 11 of a storage room and / or a steel structure with a first bearing 12. In addition, located on the tilting frame 2 on the underside of the lower Kipprahmenfläche 4 and in an area an edge 17, which is formed by the Kipprahmenflächen 3, 4, beyond the Kipprahmenfläche 3 standing out a second bearing 13, with which the piston-cylinder unit 10 at the tilting frame 2 and the Kipprahmenfläche 4 is articulated.

In addition, a second piston-cylinder unit 14 is present, which is also articulated via a first bearing 15 on the floor 11 of a storage room and / or a steel structure, wherein a second bearing 16 is present, with which the second piston-cylinder unit 14th is hinged to the Kipprahmenfläche 3.

Preferably, the second bearing 16 is located away from the bearing 13 on the Kipprahmenfläche 3 and preferably in a region of the Kipprahmenfläche 3, with respect to the length of the Kipprahmenfläche 3 relative to the L-shaped configuration in cross-section more than half the distance from the common Edge 17 of the Kipprahmenflächen 3, 4 is removed.

By shortening the piston-cylinder unit 14 between the bearings 15, 16 of the tilting frame 2 can be tilted over the common edge 17 of the Kipprahmenflächen 3, 4.

In the simplest case, the tilting frame 2 slides with the tilting frame surface 4 on the slide rail 6. Preferably, however, in the region of the bearing 13 the tilting frame 2 is guided with rollers 18 in the slide rail 6, wherein preferably the slide rail 6 is removed from the lower tilting frame surface 4, for example by a roller cross member 19, which is arranged below the Kipprahmenfläche 4.

In a further preferred embodiment ( FIG. 6 ) are two slide rails 6, starting from a cross member 19, depending on a roller 18 laterally engages the rail 6, wherein additionally from the outside, from the bearings 13 ago, rollers 20 also engage in the rail 6, so that the tilting device on both sides in the slide rails 6 is guided.

In a further preferred embodiment ( FIG. 7 ) has the Kipprahmenfläche 4 below and above the rails 6 each have a support means 21 for rollers 22, wherein the rollers 22 are preferably arranged in the region of a free from the bearing 13 remote end of the Kipprahmenfläche 4 and roll on the rail 6 on the upper side, so that the tilting frame 2 on the rails 6 is easily moved.

The basic principle is based on a simultaneous longitudinal displacement by elongation of the piston-cylinder unit 10 along the slide or support rail 6 by means of the piston-cylinder unit 14 a defined and controlled tilting of the tilting frame 2 and thus arranged on the tilting frame 2 or fixed actual oven space 25 (in FIG. 1 dashed lines) perform.

For this purpose, as already stated, the piston-cylinder unit 10 is elongated. As a result, the common edge 17 or the bearings 13 are displaced in particular by the rollers 16 engaging in the rail 6. Even without a shortening of the piston-cylinder unit 14, a tilting of the tilting frame 2 already results around the bearing axes of the bearings 13 or the roller axes of the rollers 18 and the roller axes of the rollers 20 which are advantageously aligned with the bearing axes of the bearings 13.

Here, the Kipprahmenfläche 4 lifts off with a free end of the slide rail 6. The tilting movement is further promoted or supported by a corresponding shortening of the piston-cylinder units 14 until approximately a 45 ° tilt (shown in FIG FIG. 2 ) is reached. If tilting is to be carried on, so that the tilting frame surface 3 rests on the sliding or support rail 6, the piston-cylinder unit 10 is maximally extended while the piston-cylinder unit 14 initially cuts off and then, if necessary, in the course of the tilting again performs an elongation until the Kipprahmenfläche 3 rests on the rail 6.

To restore the original situation, the procedure is reversed. If the bottom-side bearing 15 of the piston-cylinder unit 14 in this case arranged to a flat bottom of a footprint, but in this case in the in FIG. 3 situation shown, both piston-cylinder units 10, 14 act in the same direction, namely horizontally, a righting moment can not be achieved.

Therefore, if appropriate, a third piston-cylinder unit may be present, which presses vertically against the Kipprahmenfläche 3 and this initially pivoted by a short distance to pivot the tilting frame 2 through the then again not in the same direction acting piston-cylinder units 10, 14 to allow.

In a further embodiment, the bearings 15 of the piston-cylinder unit 14 below the level of the bearings 12, for example in a pit, arranged so that tilting and erecting of the frame 2 in the original position by piston-cylinder without further facilities Units 14 is possible.

In addition, it is possible to have an opposite tilting movement ( FIG. 4 ), in which the piston-cylinder unit 14 is elongated and, if appropriate, the piston-cylinder unit 10 is shortened so that the tilting frame surface 4 reaches below the level of the installation floor 11. For this purpose, however, it is necessary that the Kipprahmenfläche 4 in a recess or pit 26 in the ground (in FIG. 4 dashed) can dip. For this purpose, it is also necessary, deviating from the previous constructions, to arrange the sliding or mounting rails 6 laterally outside the tilting frame 2, wherein the guide in the rails 6 preferably takes place over outwardly projecting rollers, so that the rails 6 a submerged movement of the tilting frame surface 4th in the pit 26 does not hinder. In such an embodiment, of course, there are no further rollers arranged in the area of the bearings 13 in front of the rollers, since otherwise tilting would not be possible.

In the device, the piston-cylinder units can be operated separately from each other, of course, the piston-cylinder units via suitable control programs, however, can also be operated simultaneously.

The piston-cylinder units are in particular hydraulically actuated piston-cylinder units, wherein the corresponding size of the stroke are telescoping piston-cylinder units or differential cylinder units.

In a further advantageous embodiment (not shown), the actual furnace space or a support frame of the fire tester is rotatably mounted on the Kipprahmenfläche 3 with a rotary plate or other rotary device which is electrically, hydraulically, pneumatically or otherwise driven, so that on a such turntable, the most diverse rotations can be realized.

In order to obtain a support in relation to the L-frame surface 4 in this embodiment, arcuate supports can be arranged on the L-frame surface in such a way that a fire test furnace or a support element arranged between the fire test furnace and the L-frame is preferably provided with rollers the circular supports is guided and is supported on it. In this way, rotations can also be brought about at different tiltings, for example when a component is not installed according to the height but transversely into the fire test furnace and tested in a corresponding position.

In a further advantageous embodiment (not shown) instead of or at least partially instead of piston-cylinder units rack / pinion units are used to the longitudinal displacement of the L-shaped frame on the support rails and / or the tilt by means of an L-shaped Frame fixed turntable and a specified pinion drive to accomplish.

For example, may be present on the L-shaped frame, a corresponding drive for a pinion, wherein the pinion in a rack, which arranged on at least one of the slide rails is, intervenes. In this way, a displacement of the L-shaped frame can be accomplished on the slide rails.

In order to accomplish a tilting in this way, at least one turntable is laterally attached to the L-shaped frame so that preferably the axis of the turntable (even if it is only a quarter-circle turntable) is aligned with the tilting axis of the L-shaped frame , By engaging and driving a pinion in the turntable or a ring gear of the turntable tilting can be brought about.

In order to keep the L-shaped frame and thus the fire test in certain locations, the pinion drive can have appropriate provisions that are mechanical, or done by a corresponding control of the electric motor. Additionally or alternatively, fixing means may be arranged for and on the frame.

As already stated, this allows the piston-cylinder units to be partially or completely replaced.

The connections of the fire test furnace both for fuel supply lines and exhaust air lines or exhaust pipes and the lines themselves are of course designed for pivotability and designed as flexible hose designs.

In the invention, it is advantageous that a fire test device is provided, with which a wide variety of layers of a fire test furnace are to be realized, being superfluous to a plurality of fire testers, which realize the various necessary test conditions by fixed installation. As a result, space is saved in a significant way, beyond, of course, investment and operating costs.

The chosen construction is simple and robust as well as susceptible to interference.

LIST OF REFERENCE NUMBERS

1

fire test furnace

2

rigid tipping frame

3

long tilting frame surface

4

short tilting frame surface

5

steel sections

6

Sliding or mounting rail

10

first piston-cylinder unit

11

Floor of a storage room

12

camp

13

camp

14

second piston-cylinder unit

15

camp

16

camp

17

edge

18

roll

19

Role crossmember

20

roll

21

support means

22

roll

25

furnace

26

Recess, pit

Claims (20)

Fire test furnace with a furnace chamber (26), in which fire tests are feasible, and a tilting frame (2) on which the furnace chamber (26) is arranged, wherein the tilting frame (2) comprises at least one actuating device (14), with the tilting frame ( 2) and the oven chamber (26) are tilted controlled about a tilt axis. Fire test furnace according to claim 1, characterized in that the furnace chamber (26) is rotatably arranged on the tilting frame (2) via a rotating device about at least one axis. Fire test furnace according to claim 1 or 2, characterized in that at least one actuating device (10) is provided, with which the tilting frame (2) along a traverse axis is movable. Fire test furnace according to one of the preceding claims, characterized in that the actuating means (10, 14) are operated separately or jointly controlled. Fire test furnace according to one of the preceding claims, characterized in that the actuating means (10, 14) are piston-cylinder units. Fire test furnace according to one of the preceding claims, characterized in that the actuators are racks / pinion units in which a drivable pinion engages in a rack, wherein a rack for a longitudinal displacement of the frame on the slide rails and / or a ring gear with a corresponding pinion is present, in order to bring about a tilt. Fire test furnace according to claim 6, characterized in that the ring gear is designed to tilt the tilting device with its sprocket axis in alignment with a tilting axis of the tilting device in alignment. Fire test furnace according to claim 6 or 7, characterized in that at least one rack is arranged on one of the slide rails (6) and on the tilting frame (2) the drivable pinion is arranged. Fire test furnace according to one of the preceding claims, characterized in that the axis of rotation of the rotary device is arranged to extend parallel to the displacement axis or displacement device of the actuating device (10). Fire test furnace according to one of the preceding claims, characterized in that the tilting frame (2) is formed in cross-section approximately L-shaped, whereby a long Kipprahmenfläche (3) and a short Kipprahmenfläche (4) are formed. Fire test furnace according to one of the preceding claims, characterized in that the Kipprahmenflächen (3, 4) of a plurality of parallel steel profiles (5) are formed. Fire test furnace according to one of the preceding claims, characterized in that the fire test furnace (1) comprises at least one slide or support rail (6) on which the tilting frame (2) with the Kipprahmenfläche (4) is formed directly or indirectly resting. Fire test furnace according to one of the preceding claims, characterized in that the tilting frame (2) with the actuating device (10) on the slide or support rail (6) along the rail (6) is arranged displaceably, wherein the piston-cylinder unit ( 10) on the rail (6) and / or a floor (11) on which the rails (6) is arranged, with a first bearing (12) is articulated and on the tilting frame (2) on the underside of the lower Kipprahmenfläche (4) and in a region of an edge (17) formed by the tilting frame surfaces (3, 4) there is a second bearing (13) or hinge to which the actuating device (10) is articulated. Fire test furnace according to one of the preceding claims, characterized in that the actuating device (14) for tilting the belt test furnace (1) comprises a first bearing (15) or a first joint (15) on the bottom (11) of a Aufstellraumes and hinged thereto is and is hinged to a second bearing (16) on the Kipprahmenfläche (3). Fire test furnace according to one of the preceding claims, characterized in that the second bearing (16) is located away from the bearing (13) on the tilting frame surface (3) and preferably in a region of the tilting frame surface (3) which with respect to the length of the tilting frame surface (3). 3) based on the L-shaped configuration more than half the distance from the common edge (17) of the Kipprahmenfläche (3, 4) is removed. Fire test furnace according to one of the preceding claims, characterized in that the tilting frame (2) in the region of the bearing or joint (13) with rollers (18) in the slide rail (6) is guided. Fire test furnace according to one of the preceding claims, characterized in that two slide rails (6) are present. Fire test furnace according to one of the preceding claims, characterized in that a transverse support (19) is provided, on which the steel beams (5) of the tilting frame surface (4) are designed to rest on one end, one roller (18) starting from the transverse support (19). engages laterally in the rail (6). Fire test furnace according to one of the preceding claims, characterized in that in addition to the rollers (18) from the outside, of the bearings (13) ago, rollers (20) engage in the rail (6), so that the tilting device on both sides in the slide rails ( 6) is guided. Fire test furnace according to one of the preceding claims, characterized in that the tilting frame surface (4) on the underside and above the rails (6) each have a support means (21) for rollers (22), wherein the rollers (22) in the region of a free from the bearing ( 13) remote end of the Kipprahmenfläche (4) are arranged and on the rail (6) are arranged on the upper side rolling, so that the tilting frame (2) on the rails (6) with the rollers (18) and / or the rollers (20, 22) is movable.

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