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(11) | EP 3 084 101 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
WALKWAYS FAHRSTEIGE PASSERELLES |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
[0001] This invention relates to walkways for installation on roofs, and to a combination of such a walkway with a fall restraint system.
[0002] It is known to provide walkways on roofs of commercial buildings in particular. However, in order to prevent the users of such walkways - typically maintenance operatives maintaining roof-mounted equipment, rainwater drainage systems and the like - from falling from the roof, it is generally desired to provide some means for ameliorating the risk of falls.
[0003] One option is to provide a physical barrier at the edge of the roof. Whilst this is relatively simple, it can be unsightly, bulky and costly to install.
[0004] Another option is to provide a line-based fall restraint system, such as the MANSAFE (RTM) system provided by Latchways plc of Wiltshire, United Kingdom. This requires the installation of some sort of sliding anchorage for a line for a user, and is separately purchased and installed on the roof, potentially requiring a further set of mountings on the roof to those for the walkway, hence presenting more opportunity for the integrity of the roof to be violated, with the potential for water ingress or cold bridging.
[0007] As such, by having the anchorage for the fall restraint system incorporated in the walkway, it is no longer necessary to provide a separate anchorage for such a system, and so it is only necessary to fix a single system to the roof.
[0008] By providing the anchorage with a location in the toe guard, a fall restraint system can be attached directly to the walkway, thus doing away with the need to provide a separate fall restraint system; only a single apparatus need be purchased and attached to a roof, with a single set of mountings. Furthermore, the toe guard can efficiently serve two purposes, as a toe guard and as a location for the anchorage.
[0009] The anchorage may be received in the tube through the slot, so that a captive part of the anchorage is held captive within the tube, but typically will be able to slide within the tube along the slot. Typically, the tube will be rectangular, and preferably square, in cross section.
[0010] The captive part of the anchorage may comprise a carriage having at least one, and preferably a plurality, typically two, wheels depending therefrom. This will enable the anchorage to traverse corners in either direction. The anchorage may also comprise a mounting point for the fall restraint system; this may comprise a hitch onto which a line can be connected.
[0011] Where the first and second directions are, as they typically are for changes in direction for walkways, at right angles to each other, then the toe guard may extend around two edges of the tread, being an elongate edge along the first direction and a short edge at the transition into the second direction.
[0012] According to a second aspect of the invention, there is provided a combination comprising the walkway of the first aspect of the invention and a fall restraint system coupled to the anchorage.
[0013] The fall restraint system may comprise a flexible line attached to the anchorage, typically at the mounting point or hitch. This line would typically be coupled to a user, potentially via a lanyard. The fall restraint system may also comprise a fall arrest system, which is arranged to gradually dissipate the kinetic energy of a falling user.
[0014] According to a third aspect of the invention, there is provided a walkway according to claim 5.
[0015] There now follows, by way of example only, description of an embodiment of the invention described with reference to the accompanying drawings, in which:
Figure 1 shows a transverse cross section through a walkway in accordance with an embodiment of the invention;
Figure 2 shows a plan view of the walkway of Figure 1;
Figure 3 shows a longitudinal cross section through the walkway of Figure 1;
Figure 4 shows a side elevation of the sliding anchorage of the walkway of Figure 1; and
Figure 5 shows an end elevation of the sliding anchorage of Figure 4.
[0016] The accompanying drawings show a walkway 1 that can be installed on a roof, where it is desired to reduce the likelihood of a user of the walkway falling and injuring themselves. The walkway 1 comprises a tread 2, which comprises a plurality of metal (typically extruded aluminium) slats 3 held between a pair of toe guards 4, 5, again typically formed of extruded aluminium. The toe guards 4, 5 run along each lateral edge along the length 6 of the walkway and each engage the slats through a socket portion 9, 10. They each provide an upstanding portion 7, 8 at the edge of the tread 2, which provides an edge to alert a user that they are approaching the edge of the walkway 1.
[0017] For a first one of the toe guards 4, the upstanding portion 7 is provided by a tubular box section 11. This has a slot 12 therein, extending along the length 6. A sliding anchorage 13 is provided that is held captive within the box section 11, so that a carriage portion 14 is received within the tube, but a mounting portion 15 extends out of the slot. A flexible line (not shown) can then be attached to the mounting portion 15 (of the form of a hitch or bolt or similar) in order to be attached to the user as a fall restraint or fall arrest system.
[0018] The carriage portion 14 is U-shaped as shown in Figure 4 of the accompanying drawings and carries four wheels 16; two above the slot 12 and two below, with a pair of wheels 16 on each arm of the U-shape. Thus, whether the loading on the anchorage is to either side of the slot, or forwards or backwards along the length 6, at least one of the wheels will be able to roll along the inner surface of the box section 11.
[0019] Accordingly, the sliding anchorage 12 can slide along the length 6 of the first toe guard 4 as a user walks to and fro along the walkway 1. The location of the sliding anchorage is provided within the first toe guard 4, thus providing an integrally formed walkway and fall restraint system whilst making efficient use of the first toe guard 4. Thus, less material is used and fewer products need to be bought in order to provide a safe walkway on a roof. Only the mountings required to mount the walkway to the roof are required; there is no need for a separate set of mountings for the fall restraint system.
[0020] It can be seen from Figure 2 of the accompanying drawings that the first toe guard 4 can extend around a front side 20 of the walkway 1 at right angles to the length 6. Assuming that the toe guard 4 is adequately curved, the carriage and wheels arrangement of the sliding anchorage 12 described above will have no trouble in negotiating such a curve, or the curve in the opposite direction shown in order to move onto further segment 19. Thus, there is no need for the user to have to unclip and reclip themselves when the walkway changes direction.
1. A walkway (1) for installation on a roof, comprising a tread (2) for a user to walk
upon, the tread (2) being bounded along an elongate side by a toe guard (4, 5) having
an elongate extent, and an anchorage (13) for a fall restraint system, in which the
anchorage is a sliding anchorage (13), being able to slide along the extent of the
toe guard (4 ,5) and in which the toe guard (4, 5) comprises an elongate tube (11)
coupled to the tread (2), the tube (11) having a slot (12) along the length of the
toe guard (4, 5) providing a location for the sliding anchorage (13), wherein the
tread (2) is substantially elongate along a first direction between first and second
points, and then elongate along a second direction different to the first direction
between second and third points, and wherein the toe guard (4, 5) curves at the second
point between running in the first and second directions.
2. The walkway of claim 1, in which the sliding anchorage (13) is received in the tube
(11) through the slot (12), so that a captive part (14) of the sliding anchorage (13)
is held captive within the tube (11), but will be able to slide within the tube (11)
along the slot (12).
3. The walkway of claim 2, in which the captive part (14) of the sliding anchorage (13)
comprises a carriage having at least one wheel (16) depending therefrom.
4. The walkway of any preceding claim in which the anchorage comprises a mounting point
(15) for the fall restraint system.
5. The walkway of any preceding claim, installed on a roof.
6. A combination comprising the walkway (1) of any preceding claim and a fall restraint
system coupled to the anchorage (13).
7. The combination of claim 6, in which the fall restraint system comprises a flexible
line attached to the anchorage.
1. Laufbrett (1) für eine Installation auf einem Dach, das eine Trittfläche (2), auf
der ein Benutzer gehen kann, wobei die Trittfläche (2) entlang einer länglichen Seite
durch eine Schürze (4, 5) begrenzt ist, die eine längliche Ausdehnung aufweist, und
eine Verankerung (13) für ein Absturzverhinderungssystem umfasst, in dem die Verankerung
eine Gleitverankerung (13) ist, die in der Lage ist, entlang der Ausdehnung der Schürze
(4, 5) zu gleiten und in dem die Schürze (4, 5) ein längliches Rohr (11) umfasst,
das mit der Trittfläche (2) gekoppelt ist, wobei das Rohr (11) einen Schlitz (12)
entlang der Länge der Schürze (4, 5) aufweist, die einen Ort für die Gleitverankerung
(13) bereitstellt, wobei die Trittfläche (2) entlang einer ersten Richtung zwischen
einem ersten und einem zweiten Punkt im Wesentlichen länglich ist, und dann entlang
einer zweiten Richtung, die sich von der ersten Richtung unterscheidet, zwischen einem
zweiten und einem dritten Punkt länglich ist, und wobei sich die Schürze (4, 5) an
dem zweiten Punkt zwischen einem Verlaufen in die erste und die zweite Richtung biegt.
2. Laufbrett nach Anspruch 1, in dem die Gleitverankerung (13) in dem Rohr (11) durch
den Schlitz (12) aufgenommen wird, sodass ein unverlierbarer Teil (14) der Gleitverankerung
(13) innerhalb des Rohrs (11) unverlierbar gehalten wird, jedoch in der Lage sein
wird, innerhalb des Rohrs (11) entlang des Schlitzes (12) zu gleiten.
3. Laufbrett nach Anspruch 2, in dem der unverlierbare Teil (14) der Gleitverankerung
(13) einen Wagen umfasst, der wenigstens ein Rad (16) aufweist, das davon abhängt.
4. Laufbrett nach einem vorhergehenden Anspruch, in dem die Verankerung einen Befestigungspunkt
(15) für das Absturzverhinderungssystem umfasst.
5. Laufbrett nach einem vorhergehenden Anspruch, das auf einem Dach installiert ist.
6. Kombination, die das Laufbrett (1) nach einem vorhergehenden Anspruch und ein Absturzverhinderungssystem
umfasst, das mit der Verankerung (13) gekoppelt ist.
7. Kombination nach Anspruch 6, in der das Absturzverhinderungssystem eine flexible Leine
umfasst, die an der Verankerung angebracht ist.
1. Passerelle (1) à installer sur un toit, comprenant un giron (2) sur lequel un utilisateur
peut marcher, le giron (2) étant délimité le long d'un côté allongé par un garde-pieds
(4, 5) ayant une étendue allongée, et un ancrage (13) pour un système de retenue de
chute, l'ancrage étant un ancrage coulissant (13), pouvant coulisser le long de l'étendue
du garde-pieds (4, 5) et le garde-pieds (4, 5) comprenant un tube allongé (11) accouplé
au giron (2), le tube (11) ayant une fente (12) sur la longueur du garde-pieds (4,
5) fournissant un emplacement pour l'ancrage coulissant (13), le giron (2) étant sensiblement
allongé le long d'une première direction entre les premier et deuxième points, puis
s'allongeant le long d'une seconde direction différente de la première direction entre
les deuxième et troisième points, et dans lequel le garde-pieds (4, 5) se courbe au
deuxième point entre la course dans la première et la seconde direction.
2. Passerelle selon la revendication 1, l'ancrage coulissant (13) étant reçu dans le
tube (11) à travers la fente (12), de sorte qu'une partie captive (14) de l'ancrage
coulissant (13) est maintenue captive à l'intérieur du tube (11), mais pourra glisser
à l'intérieur du tube (11) le long de la fente (12).
3. Passerelle selon la revendication 2, la partie captive (14) de l'ancrage coulissant
(13) comprend un chariot ayant au moins une roue (16) en dépendant.
4. Passerelle selon l'une quelconque des revendications précédentes, l'ancrage comprenant
un point de montage (15) pour le système de retenue de chute.
5. Passerelle selon l'une quelconque des revendications précédentes, installée sur un
toit.
6. Combinaison comprenant la passerelle (1) selon l'une quelconque des revendications
précédentes et un système de retenue de chute accouplé à l'ancrage (13).
7. Combinaison selon la revendication 6, le système de retenue de chute comprenant une
ligne flexible attachée à l'ancrage.
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.
Patent documents cited in the description