Device for attaching a jet pipe to a ladder

Abstract

Device for attaching a jet pipe (1) to a ladder (5) which can be pressurised with a pressurised fluid, the jet pipe (1) being preferably pivotably received on a holding device (8) which is provided with at least one downwardly open hooking claw (9) which can be brought into engagement with a rung (10) of the ladder (5) from above and can be secured against being lifted out by means of an associated locking member (21), characterized in that the holding device (8) is designed as an asymmetrical bracket (14) with the at least one hooking claw (9) and a side holder pocket (11) which is laterally offset outwards relative to the latter and open inwards, which can be pushed onto a stile (12) of the ladder (5) from the outside and is provided with a clamping device (13) opposite its outer web and can thus be clamped to the stile (12) of the ladder (5).

Description

[0001] The invention relates to a device for attaching a jet pipe to a ladder, which can be pressurized with a pressurized fluid, the jet pipe being preferably pivotably mounted on a holding device which is provided with at least one downwardly open hooking claw which can be brought into engagement with a rung of the ladder from above and can be secured against being lifted out by means of an associated locking member.

[0002] A device of this type is known from GBA 621 226. In this known arrangement, the holding device is designed as a rectangular frame, which is provided with four hooking claws distributed across its corner areas and can thus be hooked onto two rungs of the ladder arranged one above the other. The frame is placed loosely between the stiles and can therefore move sideways due to lateral forces. This impairs the accuracy of the jet emitted by the nozzle. It may therefore be necessary to secure the frame and thus the nozzle manually. In addition, the known frame construction proves to be bulky and space-consuming, which is particularly problematic when the holding device has to be carried on an emergency vehicle, as is the case with fire departments, where space is already limited.In addition, the known arrangement is only applicable to ladders with the same rung spacing and is therefore not universally applicable. The known arrangement therefore proves to be not user-friendly, reliable, or universally applicable enough.

[0003] Based on this, it is therefore the object of the present invention to improve a device of the type mentioned at the outset, while avoiding the disadvantages mentioned, using simple and cost-effective means in such a way that a comparatively space-saving construction and a clear and safe positioning in the event of use are ensured.

[0004] This object is achieved according to the invention in that, in the generic arrangement, the holding device is designed as an asymmetrical bracket with at least one suspension claw and a side holder pocket which is laterally offset outwards and open inwards, which can be pushed onto a stile of the ladder from the outside and is provided with a clamping device opposite its outer web and can thus be clamped to the stile of the ladder.

[0005] The bracket construction according to the invention advantageously enables a very compact design, which has a beneficial effect on the required storage space and thus facilitates space-saving storage on a fire service vehicle, etc. Furthermore, it is ensured that the holding device is reliably locked in all directions during use. The side holder pocket, which can be pushed onto a stile of the ladder, advantageously enables reliable support not only in the lateral direction, i.e. in the longitudinal direction of the rungs, but also transversely to this, resulting in a high level of safety and reliability. The side holder pocket also ensures that only one suspension claw is sufficient, which is particularly beneficial for a compact design that is independent of the rung spacing. With the measures according to the invention, the above-cited object is clearly achieved in a particularly satisfactory manner.

[0006] Advantageous embodiments and appropriate further developments of the overarching measures are specified in the subclaims.

[0007] Thus, the bracket forming the holding device can advantageously comprise two arms offset from one another, parallel to the jet pipe, and a crosspiece connecting them. The side holder pocket is attached to the end of the outer arm remote from the crosspiece, the at least one suspension claw is attached to the end of the inner arm remote from the crosspiece, and a receiving element for the jet pipe is attached to the inner end of the crosspiece. These measures result in a particularly clear and stable arrangement.

[0008] The crossbar and the arms of the bracket can be designed as hollow profile sections that are butted together and bolted together. This allows for particularly simple and cost-effective production.

[0009] A further advantageous measure may be to flange a pivoting device to the inner end of the crosspiece, which supports the jet pipe support element. This ensures good accessibility and easy operation of the pivoting device.

[0010] The nozzle holder element can simply be designed as a C-shaped cross-sectional receiving pocket, the inside diameter of which corresponds to the diameter of the nozzle, which is screwed to a side flange of the receiving pocket using the associated threaded holes without a handle. This allows the use of a standard nozzle commonly used by fire departments.

[0011] A further advantageous measure may consist in the clamping device associated with the side holder pocket being designed as a quick-release device equipped with a manually operable handle, the base of which is attached to a lateral flange of the side holder pocket and to the underside of the arm of the bracket forming the holding device that supports it. This enables quick and reliable operation.

[0012] Advantageously, the ladder accommodating the support device can be designed as a freestanding ladder, which can preferably be assigned a safety device to increase its stability. This allows for highly versatile use in an emergency. A freestanding trestle ladder can be provided, preferably consisting of at least two fire service extension ladders joined together to form a trestle by means of a trestle connector. Such extension ladders are available on every fire service vehicle, so no additional ladders are required.

[0013] Further advantageous embodiments and expedient developments of the overarching measures will become apparent from the following description of a preferred embodiment with reference to the drawing.

[0014] In the drawing described below: Fig. 1 a view of a stepladder equipped with a jet pipe, Fig. 2 a vertical section through the upper end area of the stepladder provided with a jet pipe holder according to Fig. 1, Fig. 3 a perspective view of the holding device from the jet pipe side diagonally above, Fig. 4. a view of the holding device from the opposite side and Fig. 5 a view of the holding device from below.

[0015] During fire service operations, it may be necessary to have a nozzle fixed at a certain height and pressurised with a pressurised fluid such as water etc. For this purpose, Fig. 1 such a jet pipe 1, which is connected to a supply hose 2, is attached to the upper end of a free-standing trestle 3, preferably formed by ladders. This can be set up in such a way that the jet pipe 1 can be used for extinguishing or smoke extraction. The trestle 3 can be constructed, as in the example shown, from fire service extension ladders 5, which are connected to one another in the upper area by a trestle connector 4 that can be attached thereto, as are carried on every fire service vehicle. The supply hose 2 is led up the ascent side of one side of the trestle 3 to the jet pipe 1 attached above. To ensure sufficient stability, the lower ends of the trestle 3 can be provided with laterally projecting crossbeams 6, preferably provided with lateral terrain compensation spindles.In the example shown, additional securing devices 7 are provided which are attached to one or more ladders 5 at a distance from the ground and which can be supports and / or holding ropes.

[0016] The jet pipe 1 is mounted on an associated holding device 8, which can be attached to the upper end area of one side of the trestle 3, ie the ladder 5 provided here. The holding device 8 has, according to Fig. 2 a suspension claw 9 which is suspended from a rung 10 of the associated ladder 5, as well as a side holder pocket 11 which is offset laterally outwards and has a C-shaped cross-section, which can be pushed from the outside onto a stile 12 of the associated ladder 5 and is clamped thereto by means of a clamping device 13 arranged opposite its outer web.

[0017] The holding device 8 is, as in particular the Fig. 3 to 5, is designed as an asymmetrical bracket 14, which has two laterally offset arms 15, 16 parallel to the jet pipe, which are connected to each other by a transverse web 17 extending transversely thereto from the outside to the inside. At the end of the outer arm 15 remote from the crossbar is the side holder pocket 11, which has a C-shaped, inwardly open cross section and, as can be seen from Fig. 2, can be pushed onto a stile 12 of the ladder 5 from the outside. Next to the side holder pocket 11, as best seen from Fig. 5, a holder 18 is provided for the clamping device 13 associated with the side holder pocket 11, which can be flanged to the arm 15 and a flange of the C-shaped cross-section side holder pocket 11. The clamping device 13 is expediently designed as a quick-action clamping device, which has a clamping head 20 cooperating with a manually operable actuating lever 19, which in use, as can be seen from Fig. 2, is pressed against the inside of the bar 12 receiving the side holder pocket 11 and thus clamps the side holder pocket 11 to the bar 12.

[0018] At the end of the inner arm 16 remote from the crossbar, the suspension claw 9 is attached, which is designed as a downwardly open hook and, when used according to Fig. 2 can be hooked from above onto a rung 9, preferably the uppermost rung 9 of the ladder 5. The downwardly open hooking claw 9 is secured against lifting out in the hooked state by a locking member 21, designed here as a pin that can be pushed through the lower area of the hook of the hooking claw 9, which can be attached captively to an element of the bracket 14, here to the inner arm 16, by means of a cord 22 etc.

[0019] At the end of the crosspiece 17 projecting inward beyond the inner arm 16, a receiving element 23 is provided for receiving the jet pipe 1. The receiving element 23 can, like the Fig. 3 to 5 clearly show, be designed as a cross-sectionally C-shaped receiving pocket, the clear height of which corresponds to the diameter of the jet pipe 1. The jet pipe 1 is generally provided with a removable handle and in the present case is placed in the receiving element 23 without a handle, ie with the handle unscrewed, and is screwed to the receiving element 23 using the threaded holes assigned in the removed handle, as indicated by the screws 24 in the region of the upper flange of the receiving element 23.

[0020] The receiving element 23, which is C-shaped in cross section, is attached with its web facing the crosspiece 14 to the pivoting member of a pivoting device 25, the base part of which is flanged to the inner end region of the crosspiece 17. The receiving element 23 is accordingly connected to the crosspiece 17 by means of the pivoting device 25. The pivoting device 25 enables an angular adjustment of the jet pipe 1, as shown in Fig. 2 is indicated by dashed lines, which allows a change in the parabola of the jet emitted by the jet pipe 1. An angular adjustment, as shown here, around a horizontal axis is sufficient in practice.

[0021] The arms 15, 16 and the crosspiece 17 of the bracket 14 are, as the Fig. 3 to 5, are designed as hollow profile sections that are butted together, preferably at right angles. These hollow profile sections have internal screw channels and can therefore be firmly connected to one another simply by self-tapping screws 26, which penetrate the crosspiece 17 and can be screwed with their inner end into an associated screw channel of the arms 15, 16. In a similar manner, the side holder pocket 11 and the suspension claw 9 can also be screwed to the side of the respective arm 15, 16 remote from the crosspiece. If necessary, gusset plates 27 can also be provided to increase stability, as can be seen from Fig. 4 is recognizable.

[0022] The jet pipe 1 can be directly coupled to the associated supply hose 2. In some cases, however, it may be advisable to install a connecting piece between the supply hose 2 and the jet pipe 1, as shown in the Fig. 2 and Fig. 4, a pipe bend 28 is provided. This can be provided with an extension piece 29, as in the example shown, so that in cases of the present type, the hose connection of the pipe bend 28 is reliably located in the ascent area of the ladder 5, which does not carry a holding device 8.

[0023] Although a preferred embodiment of the invention has been explained in more detail above, this is not intended to be a limitation. Rather, a number of equally effective measures are available to the skilled person to adapt the general concept of the invention to the circumstances of the individual case. For example, it would be readily possible to design the bracket 14 as a welded construction rather than a screw construction, and the like.

Claims

[1] Device for attaching a jet pipe (1) which can be pressurised with a pressurised fluid to a ladder (5), the jet pipe (1) being preferably pivotably mounted on a holding device (8) which is provided with at least one downwardly open hooking claw (9) which can be brought from above into engagement with a rung (10) of the ladder (5) and which can be secured against being lifted out by means of an associated locking member (21), characterized by that the holding device (8) is designed as an asymmetrical bracket (14) with at least one suspension claw (9) and a side holder pocket (11) which is laterally offset outwards and open inwards, which can be pushed from the outside onto a stile (12) of the ladder (5) and is provided with a clamping device (13) opposite its outer web and can thus be clamped to the stile (12) of the ladder (5). [2] Device according to claim 1, characterized byin that the bracket (14) forming the holding device (8) has two arms (15, 16) offset parallel to one another and parallel to the jet pipe, and a crosspiece (17) connecting these arms, the side holder pocket (11) being attached to the end of the outer arm (15) remote from the crosspiece, the at least one suspension claw (9) being attached to the end of the inner arm (16) remote from the crosspiece, and a receiving element (23) for the jet pipe (1) being attached to the inner end of the crosspiece (17). [3] Device according to one of the preceding claims, characterized by that only one suspension claw (9) is provided. [4] Device according to one of the preceding claims 2, 3, characterized by that the crosspiece (17) and the arms (15, 16) of the bracket (14) are designed as hollow profile sections which are butt-jointed and screwed together. [5] Device according to one of the preceding claims 2 to 4, characterized bythat the side holder pocket (11) and the at least one suspension claw (9) are attached to the end face of the respectively associated arm (15, 16) remote from the crossbar. [6] Device according to one of the preceding claims, characterized by that a pivoting device (25) is provided which is associated with the receiving element (23) for the jet pipe (1), which is preferably flanged to the inner end region of the transverse web (17) and carries the receiving element (23). [7] Device according to one of the preceding claims, characterized by that the receiving element (23) for the jet pipe (1) is designed as a receiving pocket with a C-shaped cross section, the clear height of which corresponds to the diameter of the jet pipe (1), which, when the handle is removed, is screwed to a lateral flange of the receiving element (23) using the threaded holes assigned to it. [8] Device according to one of the preceding claims, characterized bythat the clamping device assigned to the side holder pocket (11) is designed as a quick-action clamping device provided with a manually operable handle (19), the base part of which is attached to a lateral flange of the side holder pocket (11), which is C-shaped in cross section, and to the underside of the arm (15) carrying the latter, of the bracket (14) forming the holding device (8). [9] Device according to one of the preceding claims, characterized by that the jet pipe (1) can be connected to the supply hose (2) via a pipe bend (28) preferably provided with an extension (29). [10] Device according to one of the preceding claims, characterized by that the ladder (5) receiving the holding device (8) belongs to a free-standing trestle (3) to which a safety device is assigned to increase stability. [11] Device according to claim 10, characterized bythat the safety device has lower cross members (6) and / or lateral supporting or holding members (7). [12] Device according to claim 10 or 11, characterized by that the ladder (5) belongs to a free-standing trestle ladder, which is preferably formed from at least two fire service extension ladders connected together to form a trestle (3) by means of a trestle connector (4).

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