EP3483376B1 - Lock device for a fire fighting water barrier - Google Patents

Description

Field of the Invention

The invention relates to an extinguishing water barrier with a mechanical locking mechanism.

State of the art

Fire-fighting water barriers serve as leak protection on gates or doors in dangerous goods warehouses. In the event of an accident, the fire-fighting water barriers are lowered and seal the doors and gates near the ground, so that a closed system is created which keeps fire-fighting water in the hall. This is particularly necessary in the case of contaminated extinguishing water in order to avoid damage to nature and the environment. From the DE29506179U is a relevant device for the liquid-tight closing of building, pool, lock openings or the like, e.g. for the retention of contaminated extinguishing water in buildings, with a closing position closing the building opening about a horizontal axis into an opening position upwards pivotable barrier element known.

Current extinguishing water barriers function electrically or pneumatically. The fire-fighting barriers are usually attached to the doors and gates in parallel. In the event of an accident, the barriers are turned down and pressed into a stop on the opposite side and held pneumatically or electrically in the closed position. This means that fire water barriers with an electrical locking mechanism as well as those with a pneumatically operated mechanism require separate energy systems to maintain the electrical lock or a compressed air reservoir to supply the system with pressure

Such energy and compressed air systems, however, require more space in addition to the fire water barrier.

Presentation of the invention

The object of the invention is to provide an extinguishing water barrier which can reliably close the openings near the floor in a hall or a delimited area up to a predetermined height, so that extinguishing water cannot run out of the hall or the delimited area and a lower one Has error susceptibility in the event of a malfunction. In addition, the barrier sheets should be sealed without the need for external energy and without human intervention (semi-automatic system).

An extinguishing water barrier according to the invention for ground-level openings in halls, rooms or walls can be found in claim 1. The mechanical locking device ensures that the dam barrier is firmly anchored to the ground even without additional electrical or pneumatic systems. In addition, the susceptibility to errors in the event of a malfunction is greatly reduced, since there are only mechanical elements that cannot be damaged by the malfunction, such as electrical malfunctions. Openings near the floor designate all entrances and exits, but also windows through which extinguishing water can flow from the hall or the areas delimited by walls into the surroundings. In addition, the BGR Rule 232 —power operated doors and gates– is not used in the solution according to the invention, which enables considerable savings in the area of procurement, manufacture, assembly and maintenance. The stop for the barrier sheet can be a static stop that is firmly and immovably anchored, but can also be designed as the end of a second barrier sheet.

The fire-fighting water barrier can further comprise a locking device which prevents the locking device from opening after the fire-fighting water barrier has been triggered. The locking device preferably comprises a slide which cooperates with a stop on the locking element. As a result, the barrier sheets are held in the maximum pressed position even if the pretensioning unit malfunctions and ensures the tightness of the fire water barrier. A slide with a stop realizes this locking device in a simple and robust manner.

The mechanical locking element is preferably designed to be pivotable. This creates a leverage effect around the pivot point, with which the tensioning unit can better apply the force to the locking element. The locking element is preferably designed with a transverse lever which can be pivoted about a fixed pivot and a downwardly extending hook element which can be pivoted about the transverse lever, and the pretensioning unit is connected to the transverse lever.

The holding element is preferably designed as a hook and stop. This design of the holding element is less prone to errors and can be easily solved by a mechanical actuator.

The locking device is preferably modular. This allows the location on the dam barrier to which the locking device is attached to be freely selected. For this purpose, the locking device also has, for example, a base plate on which all elements are mounted, the base plate preferably having elongated fastening slots. This makes the assembly of a modular locking device easier, since the holes in the barrier sheet may have larger tolerances.

In particular, the locking device can further comprise an interface, for example a plug connection for a removable lever extension. With such an interface, a lever can be attached to the locking mechanism, for example, and a much greater force can be applied to the locking mechanism. The "loading" of the locking device is therefore easy to do. Such a lever extension can be, for example, at least 0.5 m, or at least 1 m.

The actuating element can preferably comprise an inclined projection which, by means of interacting with a stop, displaces the mechanical locking element. This construction allows the locking element to be actuated almost without error, so that when it is folded down, it reliably closes the fire-fighting water barrier without external influence.

The locking mechanism preferably further comprises a side guide for the locking mechanism. The side guide is plate-shaped and in particular a metal plate and protrudes from an L-piece attached to the side of the base plate, the side guide being parallel to the base plate (the directions in which the plate extends).

Brief description of the figures

• Figure 1 shows an isometric view of an extinguishing water barrier according to the invention with a double dam barrier in an open state;
• Figure 2 shows the fire-fighting water barrier according to the invention Figure 1 in a closed state;
• Figure 3 shows a locking mechanism in an isometric view and in an open state;
• Figure 4 shows the locking mechanism in an open state in a front view;
• Figure 5 shows the locking mechanism in a closed state in an isometric view; and
• Figure 6 shows the locking mechanism in a closed state in a front view.

Description of the preferred embodiment

In Figure 1 an extinguishing water barrier 10 is shown in an isometric view and in an open or also in "loaded" state. The extinguishing water barrier 10 comprises a fastening device 12, a barrier sheet 14 and a locking device 20. In the floor, latching elements 16 are provided which interact with the locking mechanism 20 as will be described later.

The fastening device 12 is anchored in the ground by means of screws, for example, and the dam barrier 14 is then pivotably fastened to the fastening device 12. The fastening device 12 has a connection to an adjacent one Wall on, so that the water can get around the fastening device 12 in the event of a possible application and flow past the fire-fighting water barrier. The connection can be bricked, for example, or can consist of metal profiles, which are then anchored in the wall.

The barrier sheet 14 here consists of two dam beams of different heights. The number of dam beams and the height of the individual dam beams is irrelevant if the requested height of the barrier sheet 14 is reached. The barrier sheet 14 is pivotally mounted on the fastening device 12. Usually, it is held in the open position by an electromagnet 15, which is switched off in the event of use, so that the barrier 14 swivels to the ground due to its own weight. However, it is possible to use a different type of holder that leaves the barrier sheet 14 free when activated. When the barrier sheet 14 is folded down, a damper 17 or a spring-damper system 17 regulates the speed of the folding down.

On the other side of the hall opening there is also a further fastening device 12 ', on which a stop at the outer end of the barrier sheet 14 is provided. This stop can be designed statically, that is to say as a receptacle or projection for the end of the barrier sheet 14, which then, when folded down, abuts the stop and forms a water-impermeable wall. A seal 13 is provided at the end of the barrier sheet 14 and on the underside of the barrier sheet 14. In use, this seal is compressed in order to achieve the required sealing performance by the locking device 20 of the barrier leaf 14 described later pressing against the floor.

In the present embodiment, the stop is also designed as a barrier sheet 14 ', as a result of which larger openings in a hall or a walled-in area can be closed. The fastening device 12 ', like the fastening device 12, is connected to the wall next to the opening, so that no water can flow past the barrier sheet 14' on this side either. The barrier sheet 14 'is designed like the barrier sheet 14 and then serves as a stop. For this purpose, the two ends of the barrier leaves 14, 14 'are designed with opposite bevels, as clearly shown in FIG Figure 2 can be seen.

When the extinguishing water barrier 10 shown in the figures is used, the brackets 15 ', 15 are triggered first. The bracket 15 'is triggered a predetermined time earlier and releases the barrier sheet 14'. For example, this can be done by switching off the current in the case of an electromagnetically designed holder and the electromagnet having no magnetic force for holding that of the barrier leaf 14 '. The bracket 15 'triggers first, the barrier sheet 14', which is used as a stopper for the barrier sheet 14, must first reach the end position due to the inclination of the end piece, so that the end of the barrier sheet 14 'below the end of the barrier sheet 14 lies. When the barrier sheet 14 'falls, the holder 15 releases and also allows the barrier sheet 14 to pivot downward. As soon as the barrier sheet 14, 14 'has come into the end position, the locking mechanism 20, 20' closes with the latching elements 16, 16 'anchored in the floor.

The locking device 20 will now be described in more detail below. The locking device 20 is a mechanism which is independent of external conditions. This means that it requires no electricity and no compressed air lines, but is actuated purely mechanically and in particular independently by triggering the fire-fighting water barrier 10. The locking device 20 'corresponds to the locking device 20. The locking device 20 comprises a biasing unit 22, a mechanical locking element 24, an actuating element 26 and a holding and releasing mechanism 28, 26. The locking device 20 is in particular of modular construction, that is to say there is a base plate 30, on which all elements of the locking device 20 are attached. As a result, the locking device 20 can be attached at any point on the dam barrier 14, which means great flexibility for the latching elements 16, 16 ′ to be anchored in the ground. Screws 32 can be provided, for example, for fastening the base plate 30. These then fasten the base plate 30 through holes in the dam barrier 14, in particular with the aid of a counterplate 31 which is fastened on the opposite side of the barrier sheet 14. The counterplate serves for better fastening, since it takes on a function like a washer and damage to the barrier sheet 14 (for example due to tightened screw nuts or the like) can be avoided. The bores 34 can preferably be designed as slots.

If there is no base plate, all elements are attached directly to the barrier sheet 14.

The biasing unit 22 is designed here as a spring, in particular as a compression spring. One end of this spring 22 is fastened on the base plate 30, the other on the mechanical locking element 24. In the present case, the mechanical locking element 24 comprises a cross strut 25 and a vertically arranged hook element 27. An interface 40 is preferably provided on the cross strut 25, at which one Lever extension (not shown) can be attached. The lever extension can be a simple rod that can be inserted, for example, into a plug connection designed as a hollow tube piece. The lever extension is at least 0.5m, preferably at least 1m long. The holding mechanism is formed by a holding element 28, which comprises a projection on the mechanical locking element 24 and a stop 29 on the base plate 30, the release mechanism is formed by an actuating element 26, which in the present case comprises a tapering projection 26, which then on a stop 54 of the Einklinkelements 16 is moved.

The cross strut 25 rotates about a rotating pole 33, which in the present case is located on the side of the pretensioning unit 22 opposite the hook element 27. In principle, it is also possible to use a tension spring instead of a compression spring, in which case the rotating pole 33 and the hook element 27 lie on the same side of the tension spring or the rotating pole 33 then lies between the tension spring and the hook element 27. This ensures that when the By virtue of the pretensioning unit, the hook element is pressed upward and the dam barrier 14 is pressed (or pulled) against the ground. To guide the hook element 27 laterally (in Figure 4 a direction into the plane of the drawing), a side guide 35 is provided. The Seitenfürhung 35 can be attached to the base plate, but can also be arranged on a bearing plate 36 described below, which can take over other storage functions.

Furthermore, a lock 38 is also provided, by means of which the mechanical locking element 24 can be held in a locked position. The locking device 38 is preferably designed as a slide, pin or bolt which is biased with a spring in the direction of the mechanical locking element 24. The spring is preferably arranged within the slide of the locking device 38. in Figure 4 you can see the slide in the retracted position, in Figure 6 in the locked. The small finger lever 60 then serves to pull back the pin of the lock 38. There is a stop 39 on the mechanical locking element 24, which can act together with the locking device 38 and prevents that even with one Malfunction of the spring, the hook element 27 loosens and the seal 13 relaxes. The locking lever can be fastened to the bearing plate 36, which extends perpendicularly to the base plate 30 and is fastened thereon. In the present case, the bearing plate 36 is L-shaped and fastened to the base plate 30 with bores or drill slots.

In the ready state of the extinguishing water barrier 10, the locking device 20 is biased. A preloaded locking device 20 is shown in FIGS Figures 3 and 4 shown. The cross strut 25 is pivotally mounted on the rotating pole 33 and the hook element 27 is pivotably mounted on the cross strut 25 on a second rotating pole 31. This biasing device 22 is biased in the closing direction of the mechanical locking device 24. In the present case, this is a largely vertical direction, that is, the vertical portion of the pretensioner 22 must be larger than the horizontal portion. In the present embodiment in the case of an elongated compression spring or tension spring 22, the angle α must be smaller than the angle β (see Figure 4 ).

In order to tension the locking mechanism 24, the lever extension is preferably attached to the interface 40 and the cross strut 25 is pressed down. Then the hook element 27 is moved such that the holding element 28 strikes the stop 29 and is held there (in FIG Figure 4 to the right). This can be done with a handle 43, for example. When the mechanical locking element 24 is pressed down, the prestressing device 22 is prestressed. This now presses the holding element 28 against the stop 29, so that the mechanical locking device 24 cannot move upwards.

The locking device 38 is pulled backwards and is biased by the spring inside the slide in the direction of the hook element 27. For example, it can rest on the hook element 27 (see Fig. 4 ) and when the hook element 27 is moved upwards by the pretensioning unit, engage behind the stop 39 (see Fig. 6 ).

In this state, the locking device 20 is then loaded, that is to say preloaded, and can lock itself automatically when the actuating element 26 is triggered.

Specifically in terms of Figures 3 and 4 the compression spring 22 is compressed and pushes against the cross strut 25 upwards. As a result, the holding element 28 is pressed against the stop 29 and the locking mechanism 24 is held in position. The locking element 38 is biased in the direction of the holding element 28, for example, can easily press against one side of the hook element. However, not too firmly that the holding element 28 can come loose from the stop 29.

The triggering of the fire-fighting water barrier 10, as shown in the figures, will now be described below. If the extinguishing water barrier 10 is now triggered, the barrier sheet 14 falls with the locking device 20 down onto the latching device 16. The latching device 16 is embedded in the floor and essentially comprises a receiving space 50 for the hook element 27, which is delimited by peripheral walls, in particular Walls made of metal and a hook pin, which is designed to hold the latch hook 45. An upper edge of the receiving space 50 is used in the present embodiment as a stop 54 for the actuating element 26. If the actuating element 26 is designed as a rising projection, as in the present case, then the distance d from the wall of the latching device to the latch pin 52 should be less than the distance h from the largest end of the projection 26 to the tip of the latch hook 23. This ensures that the latch hook 45 is also pushed under the latch pin 52 when the stop 24 has the inclined projection 26, but must not be less than the distance k, which corresponds to the width of the latch hook 23 at its hook tip (see Figure 4 ).

If the pretensioned locking device 20 engages with the hook element 27 in the latching device 16 when the barrier sheet 14 falls down, the hook element 27 with the actuating element 26 abuts the stop 54 of the latch element 16 and is displaced in the direction of the latch pin 52. As a result, the pawl hook 45 is displaced in the direction of the pawl pin 52 and the holding element 28 slides out of engagement with the stop 29. Due to the width ratios of h, d and k, the latch hook 45 is pushed under the latch pin 52 while the hook element 27 is moved out of engagement with the stop 29.

The movement of the hook element 27 downwards is generated by the dead weight of the barrier leaf 14 pivoting downwards, the movement to the left by the displacement of the hook element 27 to the left by the interaction of the actuating element 26 and of the stop 54. When the holding element 28 slips out of engagement with the stop 29, the prestressing element 22 presses the cross strut 25 upwards and thereby also pulls the hook element 27 upward. Since the latch hook 45 has been pushed under the latch element 52, these two elements engage with one another as soon as the hook element 27 moves upwards. This locked position is in the Figures 5 and 6 shown. The biasing spring 22 presses the cross strut 25 upwards and therefore pulls the hook element 27 against the pawl and the dam barrier 14 onto the floor. As a result, the seal 13 is compressed under the barrier sheet 14. Due to the upward movement of the hook element 28, the locking element 38 simultaneously slips under the stop 39. This prevents the hook element from loosening, even if the pretensioning element malfunctions, since it can no longer move downward.

Reference list

• Fire water barrier 10
• Fastening device 12, 12 '
• Seal 13
• Barrier sheet 14, 14 '
• Bracket (electromagnet) 15, 15 '
• Latching element 16
• Stop for actuator 17
• Damper 17
• Locking device 20
• Preload unit 22
• Klinkhaken 23
• mechanical locking element 24
• Cross strut 25
• Actuator 26
• Hook element 27
• Holding element 28
• Stop 29
• Base plate 30
• Counter plate 31
• Fastening element (screw) 32
• Swivel pole 33
• Bore / slot 34
• Side guide 35
• Bearing plate 36
• Locking device 38
• Stop 39
• Interface 40
• Handle 43
• Jack hook 45
• Recording room 50
• Jack pin 52
• Stop for actuator 54

Claims (11)

1. Fire fighting water barrier (10) for openings near the floor in halls, rooms or walls, comprising
   a fastening device (12) for fastening the fire fighting water barrier (10) to the floor or wall and for holding a barrier sheet (14);
   a barrier sheet (14) which is pivotally mounted on the fastening device (12) by its own weight on the floor and which is provided with a seal (13) on at least the underside;
   a holder (15) for holding the barrier sheet (14) in the open position and for releasing the barrier sheet (14) when activated; and
   a stop which is fixed to the floor or wall by a second fixing device (12') and against which the pivoted barrier blade (14) abuts
   wherein
   the fire fighting water barrier (10) comprises a locking device (20) attached to the barrier sheet (14), the locking device (20) comprising a mechanical locking element (24),
   characterized in that
   the locking device (20) comprises a biasing unit (22), and a holding mechanism (28) and release mechanism (26), and wherein the mechanical locking element (24) is held in an open position by the holding mechanism (28), is urged into a closed position by the biasing unit (22) and the mechanical locking element (24) can be released from the open position by the release mechanism (26) and wherein the locking device (20) interacts with a latching element (16) in the floor.
2. Fire fighting water barrier (10) according to claim 1, further comprising a blocking device (38) which prevents opening of the locking device (20) after the fire fighting water barrier (10) has been released.
3. Fire fighting water barrier (10) according to claim 2, wherein the barrier device (38) comprises a slide which interacts with a stop (39) on the mechanical locking element (24).
4. Fire fighting water barrier (10) according to any of the preceding claims, in which the mechanical locking element (24) is designed to be pivotable.
5. Fire fighting water barrier (10) according to claim 4, in which the mechanical locking element (24) is formed with a transverse lever (25) pivotable about a fixed pole of rotation (33) and a hook element (27) extending downwards and pivotable about the transverse lever, and the biasing unit (22) is connected to the transverse lever (25).
6. Fire fighting water barrier (10) according to one of the preceding claims, in which the holding element (26) is formed as a hook and stop (29).
7. Fire fighting water barrier (10) according to one of the preceding claims, in which the locking device (20) is constructed in modular form.
8. Fire fighting water barrier (10) according to claim 7, in which the locking device (20) has a base plate (30) on which all elements are mounted.
9. Fire fighting water barrier (10) according to any of the preceding claims, wherein the locking device (20) further comprises an interface (40) for a removable lever extension.
10. Fire fighting water barrier (10) according to one of the preceding claims, in which the actuating element (26) comprises an inclined projection which displaces the mechanical locking element (24) by means of a stop (54).
11. Fire fighting water barrier (10) according to one of the preceding claims, further comprising a lateral guide (35) for the mechanical locking element.

Images