DE202009017665U1 - Safety device for compressed air bottles - Google Patents

Abstract

Safety device for compressed air cylinders, comprising a valve (22) with a handwheel (24), which safety device has a releasably secured to the compressed air cylinder (20) fastening part (26) which is connected via a non-detachable pivotal connection with a top part (28), which can take over at least a first state and a second state via a pivoting movement, wherein the upper part (28) engages over the handwheel (24) in the first state locked by a locking device (30) and in the second state an operation of this handwheel (24 ) not disabled.

Description

The The present invention relates to a safety device for Handwheels on gas cylinders and in particular on compressed air cylinders for jump cushions.

Jump pad, such as off EP 0 317 904 B1 known to be used as rescue equipment by the fire brigade to rescue people from burning buildings or to protect people at risk of falling. A single jump pad consists of an inflatable tube scaffold, which is covered by tarpaulins and inflated by a connected compressed air cylinder in seconds. While the upper horizontal tarpaulin serves as a jumping-off area, the side tarpaulins, which have multiple openings, prevent the air from escaping too quickly inside the jump-pad. The public fire brigades in Germany mainly use jump cushions with dimensions of 3.5 m by 3.5 m by 1.7 m, which allow jumps of up to 16 m. The jump cushions are normally filled by a 300 bar filling pressure, 6 liters compressed air cylinder. Jump posters are folded when not needed, permanently connected to the compressed air cylinder, stored in the fire truck fire engines. Therefore, it is imperative that the valve of the bottle does not accidentally open and thereby unfolds the jump pad in the fire truck, which on the one hand to a blockage and on the other hand to damage the vehicle, other stored in the vehicle equipment and above all to a considerable risk for persons in near the jump pad. To avoid this, it is advisable to protect the valves and handwheel with safety devices. However, it has happened in the past that, despite the existing safety device jump cushions unfolded inside the fire truck and thereby caused considerable damage.

Classical Safety devices for gas cylinders are usually Protective caps, with their cavities the valve, including of the handwheel, enclose and by turn or snap fasteners connected to the bottles. These protective caps are for the use of jump cushions, however, unsuitable because of use of the jump pad, first remove the protective cap and then the connecting hose between compressed air bottle and jump pad must be mounted on the valve, which takes too much time in the Emergency would mean. Therefore, for jump cushions currently used protective caps for plugging, which recesses for the connecting hose between compressed air cylinder and Have jump pad. These plastic molded caps will be only frictionally via the handwheel and valve slipped. The disadvantage of this protective cap is that they are not turning around the vertical axis of the bottle in the Usually identical to or at least parallel to the axis of rotation of the Handwheel is attached. That's it in the past that the protective cap has been turned by shocks and elastically deformed so that it touches came with the handwheel. These touches caused in several cases of unintentional opening of the Valve, causing the jump pad inside the fire truck was inflated.

Other known from the prior art protective caps protect primarily the valves against possible deformations and resulting gas leaks. Such caps are for example off EP 0629812 B1 . DE 10057424 B4 . DE 10308676 B4 . DE 19648440 C1 and DE 10057471 C2 known. These caps protect the valves, allow a permanent mounting of the connecting hose, but also intend permanently easy accessibility of the handwheel, which is not desirable in the application for jump cushions, as such an unintentional operation of the handwheel can not be excluded.

Here now uses the invention, it has set itself the task a safety device for gas cylinders, and preferably for compressed air bottles for jump cushions continue to develop and improve, that on the one hand a permanent assembly of the connecting hose and a swift Use of the jump pad can be ensured on the other hand, an accidental opening of the valve can be excluded in the packaged state.

The Task is by a safety device for compressed air bottles solved, which have a valve with a handwheel, which safety device a detachable, on the compressed air cylinder fastened fastening part, which has a non-detachable Pivoting connection is connected to an upper part, which over a pivoting movement at least a first state and a second state can take, the upper part in the by a locking device locked the first state, the hand wheel overlaps and in the second state, an operation of this handwheel not with special needs.

According to the invention, the safety device has a fastening part which serves to fasten the safety device to the bottle. The attachment is designed to prevent relative rotation between the bottle and the safety device. The upper part ver by means of a pivotal connection with the fastening part is dimensioned so that it in the first state in which it engages over the handwheel, various handwheel variants provides sufficient coverage, thereby preventing unintentional opening of the valve by external influences. This first state is locked via a locking device which can be actively and rapidly removed by an operator before the top can be pivoted to a second state. In this second state, the handwheel is not overlapped by the upper part, so that operation of the handwheel is possible.

Preferably is the pivotal connection by means of two with respect to a Bottle axis opposite storage facilities realized, each consisting of a bearing part with a head and a bolt, a bearing opening in the upper part and a bolt bearing in Fastening part, wherein the bolts face each other on a common pivot axis through the respective bearing opening pushed and permanently connected to the respective pin bearing are. This indissoluble connection prevents it from happening the bolt, for example, by vibrations, from the bolt bearing and thereby the upper part of the fastening part triggers, whereby protection of the handwheel is no longer guaranteed would. Preferably, the upper part touches the handwheel not what prevents from small deformations and torsos of the upper part of the handwheel is opened unintentionally.

Preferably, the fastening part consists of at least two parts which are assembled on a bottle neck and frictionally enclose this bottleneck. This arrangement allows for easy installation and prevents relative rotational movement between the compressed air cylinder and safety device. Preferably, the locking device has a plug connection, consisting of a passage in the fastening part, a bore in the upper part, which in the first state has a common locking axis with the passage, and a fixing device which is captively connected to the upper part or the fastening part. Preferably, edges and / or the narrow sides of the upper part, the fastening part and / or the locking device are defused and / or the upper part on at least one narrow side, for example made of rubber edge protection, causing injury to the operator and damage to the jump pad can be prevented. Optionally, the attachment part has an adapter adapted to the diameter of the neck of the bottle, which allows the safety device to be used on different types of compressed air bottles having different neck diameters. Preferably, the upper part is in one piece and has a second bore with the same position to bearing opening 36b like the hole 44 to storage opening 36a , An advantageous construction of the upper part 28 can be achieved for example by a preceding Bechzuschnitt stainless steel, followed by the proposed holes or punches and a U-shaped deformation of the cut sheet metal. Such a shell prevents possible incorrect assembly. Preferably, the fixing device has a ball lock pin, which allows a speedy unlocking of the locking device.

Further Advantages and features of the invention will become apparent from the others Claims and the following description of one not limiting to be understood embodiment of the Invention, in the following with reference to the drawings closer is explained. Show it:

1 FIG. 2: a perspective view of a compressed air cylinder with safety device mounted, which is in a first, locked state, FIG.

2 FIG. 3 is a perspective view of a compressed air cylinder with a safety device mounted in a second, unlocked state. FIG.

3 a perspective view of an upper part of the safety device and a fixing device, and

4 : A perspective view of a fastening part of the safety device.

All for the invention not essential components of the device in accordance with the present invention were for simplicity not shown in the drawings.

1 shows a compressed air bottle 20 that is a valve 22 with a handwheel 24 which is protected by a safety device from accidental operation. This safety device consists mainly of a fastening part 26 a shell 28 and a locking device 30 , In the in 1 shown first state overlaps the upper part 28 the handwheel 24 , whereby unintentional rotation of the handwheel is prevented. Furthermore, the fastening part 26 at the bottleneck 21 the compressed air bottle 20 frictionally mounted such that a rotational movement about a bottle axis 32 is excluded. A locking device 30 prevents the upper part 28 can pivot from the first state to a second state.

2 shows the compressed air cylinder 20 with safety device, with the upper part 28 now in a second state, which is an operation of the handwheel 24 not disabled. Starting from the first state, the second state is via unlocking the locking device 30 with subsequent pivoting movement of the upper part 28 reached. The necessary pivot connection consists of two on a pivot axis 34 lying Lagerereinrichtun conditions, which relate to the bottle axis 32 are opposite. These storage facilities each have a not shown in the figures bearing part, a bearing opening 36a and 36b in the upper part 28 and a bolt bearing 38a and 38b in the fastening part 26 on. The bearing part is through the bearing opening 36a . 36b pushed and unsolvable with the respective bolt bearing 38a . 38b connected. For this it is suitable that the bolt bearing 38a . 38b has a thread and the bearing part is realized by an associated screw. An inseparable connection between pin bearings 38a . 38b and screw can be done for example by an additional adhesive bond. The locking device 30 can preferably be realized in the form of a plug connection. This has a passage 40 in a nose 42 in the fastening part 26 , a hole 44 in the upper part and a fixing part 46 , preferably consisting of a locking pin 48 and an operating device 50 , on. The locking pin 48 is in the first, locked state through the hole 44 and the passage 40 inserted and connects these form-fitting by a locking device 52 For example, ball locks in a ball lock pin. The operating device 50 serves as a point of attack for the operator and thereby allows a speedy removal of the fixing part 46 to change to the second, unlocked state. This second condition hinders a desired operation of the handwheel 24 not, whereby a rapid deployment of the jump pad is guaranteed. In 2 is shown that the fixing part 46 through a connecting part 54 , preferably a cable or a chain, captive with the upper part 28 connected is. However, it would also be possible the fixing part 46 captive with the fastening part 26 , or the compressed air cylinder 20 connect to.

3 shows a perspective view of a possible realization of the fixing part 46 in the form of a ball locking pin and a perspective view of the upper part 28 , which is preferably formed from one piece. This shell 28 shows no sharp corners, edges and narrow sides that could damage the jump pad. Furthermore, the upper part 28 at least two sections, or over the entire length of its outer narrow side edge protection 56 on, which preferably consists of rubber. In a copy, not shown, the upper part 28 on both sides the bore 44 on. This creates an axis of symmetry at the uppermost point of the upper part. Such a symmetrical upper part has the advantage that a faulty mounting of the safety device is precluded, in particular when the upper part has a second axis of symmetry which is orthogonal to the first axis of symmetry through the center points of the bores 44 and the bearing opening 36a . 36b runs.

4 shows a perspective view of a possible fastening part 26 , In the illustrated copy this consists of two parts 58 and 60 that have two screw connections 62a and 62b be frictionally flanged around the neck of the bottle. At one of the two parts 58 is the nose vertically 42 integrated, which the passage 40 for the fixing part 46 includes. In the presented version is the fixing part 46 a ball lock pin, which is widely used for quick fixing, connecting and securing of individual parts or workpieces. By pressing the spring-loaded bolt 48 be at least two balls 52 unlocked and locked again when released. As a result, such a fixing part is particularly suitable for the protective device described here of compressed air bottles for jump cushions. As another feature of in 4 shown fastening part 26 are the rounded corners, which reduce the risk of damage to the jump pad in the packaged state.

Of course, the present invention is not limited to the embodiment described above. For example, the attachment part can be designed so that the safety device can be mounted on compressed air cylinders with different bottleneck diameters by simple adaptation by means of adapters. Furthermore, the vertical nose of the locking device could also be designed horizontally. Instead of the screw connections of the fastening part 26 For example, clamping and / or plug connections could also be used. Also possible is a fastening part, which is dimensioned as an attachment element for the valve thread, so that it is after assembly between the bottle body 23 and cylinder valve 22 located. Advantageously, the items are 58 and 60 of the fastening part 26 designed identically, whereby the fabrication of the parts is much easier. Furthermore, it is likely that this can reduce manufacturing costs. In the previous embodiment, in this case, the part would 60 also a nose like part 58 exhibit.

alternative Locking devices could, for example, terminals, spring plugs, and / or bolts with spring plugs.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 0317904 B1 [0002]
• - EP 0629812 B1 [0004]
• - DE 10057424 B4 [0004]
• - DE 10308676 B4 [0004]
• - DE 19648440 C1 [0004]
• - DE 10057471 C2 [0004]

Claims (12)

Safety device for compressed air cylinders containing a valve ( 22 ) with a handwheel ( 24 ), which safety device a detachable, on the compressed air cylinder ( 20 ) attached fastening part ( 26 ), which via an inextricable pivotal connection with an upper part ( 28 ), which can assume at least a first state and a second state via a pivoting movement, wherein the upper part ( 28 ) in which by a locking device ( 30 ) first locked the handwheel ( 24 ) and in the second state an operation of this handwheel ( 24 ) not disabled. Safety device according to claim 1, characterized in that the pivoting connection by means of two with respect to a bottle axis ( 32 ) opposite bearing devices is realized, each consisting of - a bearing part with a head and a bolt - a bearing opening ( 36a . 36b ) in the upper part ( 28 ) and - a bolt bearing ( 38a . 38b ) in the fastening part ( 26 Further, the bolts are mutually oppositely directed on a common pivot axis ( 34 ) through the respective bearing opening ( 36a . 36b ) and preferably unsolvable with the respective pin bearing ( 38a . 38b ) are connected. Safety device according to one of the preceding claims, characterized in that the upper part ( 28 ) the handwheel ( 24 ) not touched. Safety device according to one of the preceding claims, characterized in that the fastening part ( 26 ) of at least two parts ( 58 . 60 ) at a bottleneck ( 21 ) and this bottleneck ( 21 ) frictionally enclose. Safety device according to one of the preceding claims, characterized in that the locking device ( 30 ) has a plug connection, consisting of - a passage ( 40 ) in the fastening part ( 26 ), - a bore ( 44 ) in the top ( 28 ), which in the first state a common locking axis ( 31 ) with the passage ( 40 ), and a fixing part ( 46 ), which in the first state the passage ( 40 ) with the bore ( 44 ) connects positively and thereby prevents unintentional loosening. Safety device according to one of the preceding claims, characterized in that the fixing part ( 46 ) by a connecting part ( 54 ) captive with the upper part ( 28 ) or the fastening part ( 26 ) connected is. Safety device according to one of the preceding claims, characterized in that edges and / or narrow sides of the upper part ( 28 ), the fastening part ( 26 ) and / or the locking device ( 30 ) are defused and / or the upper part ( 28 ) on at least one narrow side of an edge protection preferably made of rubber ( 56 ) having. Safety device according to one of the preceding claims, characterized in that the fastening part ( 26 ) of at least two parts ( 58 . 60 ) and optionally the diameter of the neck of the bottle ( 21 ) adapted adapter exists. Safety device according to one of the preceding claims, characterized in that the upper part ( 28 ) is molded in one piece and that the upper part ( 28 ) preferably a second bore with the same position to bearing opening 36b like the hole 44 to storage opening 36a having. Safety device according to claims 5 to 9, characterized in that the fixing part ( 46 ) a blocking part ( 48 ), for example a ball lock pin, and an operating device ( 50 ) having. Safety device according to one of claims 5 to 10, characterized in that the bore ( 44 ) in a preferred vertical nose ( 42 ) of the fastening part ( 26 ) is located. Safety device according to one of the preceding claims, characterized in that the compressed air cylinder ( 20 ) is permanently connected to a jump pad.