EP0279929A2 - Dispositif antichute - Google Patents
Dispositif antichute Download PDFInfo
- Publication number
- EP0279929A2 EP0279929A2 EP87118148A EP87118148A EP0279929A2 EP 0279929 A2 EP0279929 A2 EP 0279929A2 EP 87118148 A EP87118148 A EP 87118148A EP 87118148 A EP87118148 A EP 87118148A EP 0279929 A2 EP0279929 A2 EP 0279929A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rope
- slide
- clamping
- longitudinal recess
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/04—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion incorporating energy absorbing means
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0081—Equipment which can travel along the length of a lifeline, e.g. travelers
Definitions
- the invention relates to a fall protection with a two-part, hinged about a hinge axis, consisting of a slide part and a locking part in which a substantially straight and parallel to the hinge axis extending longitudinal recess for the insertion of the stretched rope is arranged, wherein a) a two-armed clamping lever is mounted in the slide part on a hinge axis, one end of which protrudes from the slide and has a fastening eyelet, the other end of which has a clamping lug which is so eccentric with respect to the hinge axis that the clamping lug on the eyelet during a downward pull can be pressed increasingly against the rope and lifted off the rope during an upward pull and which is in relation to the slide part under the action of an elastic return member, which acts continuously on the clamping lever in the sense of rope clamping, and b) the closure part can be locked in the longitudinal position in the closed position by means of a safety lock on the slide part, with the rope being fixed.
- the clamping lever presses the rope against the bottom of the longitudinal recess in the closure part, so that in the event of a crash, the full longitudinal and transverse forces act on the hinge joint and the locking mechanism. In the steel ropes mainly used today, these forces are particularly great because of the lack of shock absorption that would be present with hemp ropes. An incorrect closing of the slide would lead to a complete crash.
- Abseiling aids are described in French patent applications 2,472,395 and 2,339,566. Abseiling aids are to be used as rope brakes and not as fall protection devices, because they have to be secured in the devices during the ascent because of the extremely winding rope course do not let the person move along a rope, especially not along a relatively stiff steel rope.
- the invention is therefore based on the object of specifying a fall protection device of the type described at the outset, which allows the rope to be inserted with only one hand and without delay, i.e. responds immediately without excessive free fall of the secured person.
- the slide part is block-shaped and seen in cross-section U-shaped, the rope enclosing longitudinal recess laterally in such a position that one side wall runs parallel to the rope and to a plane through the hinge axis of the clamping lever, such that the Clamping force of the clamping lug is aligned perpendicular to the direction of insertion of the rope in the longitudinal recess and perpendicular to the side wall when the slide is locked and that b) the closure part is plate-shaped and in the closed position runs parallel to the pivoting plane of the clamping lever and covers the lateral access opening of the longitudinal recess.
- An essential feature of the invention is the constructive instruction to arrange the U-shaped recess and the clamping lever in one and the same slide part, in such a way that the clamping lever presses the rope against a side wall of the longitudinal recess and not against the closure part.
- the fall protection can be temporarily attached to the rope when the closure part is open, so that one-hand operation is possible.
- the closure part is completely freed of all forces generated by the clamping lever.
- the spring for generating the restoring force of the clamping lever can be designed significantly stronger because the closure part does not have to be closed against this spring force. This means that the fall protection in a case responds much faster: The initial sliding process of the rope in the sled does not take place.
- the handling is greatly simplified, and the functionality remains fully intact even if the fall arrest device is not locked in the closed position.
- the fall protection always remains clamped to the rope as long as the outer clamping lever part is not pivoted completely upwards.
- the safety lock has at least one locking pin which is arranged to be displaceable to a limited extent in a transverse bore of the block-shaped slide part parallel to the articulated axis of the clamping lever and can be inserted into an aligned transverse bore of the closure part and locked with it in the closed position of the closure part, and if Furthermore, the at least one locking pin is assigned a safety device that acts automatically due to gravity, preferably a drop body, through which the locking between the locking pin and the locking part can be brought about when the slide is attached to the rope in the correct position, and the locking between locking pin and Closure part is locked.
- the locking bolts can be brought into a form-fitting and releasable engagement with the closure part, but not in the other case, since the ends of the locking bolts abut the safety device, ie the drop body, without locking is possible. The user notices this immediately because the fall protection cannot be fixed on the rope.
- the fall protection 1 shown in the drawing is attached to a rope 2 which e.g. is attached to the upper and lower end of a ladder, not shown, preferably with slight tension.
- the fall arrest device 1 shows a carriage 3 comprising the cable 2, which is normally guided to be displaceable upwards along the cable 2 and is clamped to the cable 2 when the carriage 3 moves downwards or at a standstill.
- the slide 3 is in two parts and has a block-shaped slide part 3a, which has a rectangular cross-section, and a closure part 3b, which is pivotably hinged to this slide part 3a by means of a vertical joint axis 4 arranged in a corner region of the block-shaped slide part 3a.
- the block-shaped slide part 3a has a longitudinal longitudinal recess 6 running parallel to the hinge axis 4, which is seen in cross-section, is U-shaped and is open in the direction of the closure part 3b.
- This longitudinal recess 6 serves to receive the cable 2 and is laterally delimited or lockable by an end web 7, which is approximately trapezoidal in cross section and projects from the closure part 3b.
- the central region of the longitudinal recess 6 is connected to the outside or to the front 9 of the slide part 3a by means of a passage opening 8 arranged exclusively in the block-shaped slide part 3a.
- the slide part 3a consists of two half shells, which are, however, firmly connected to one another by rivets, screws, etc. 10.
- the passage opening 8 is penetrated by a transverse joint axis 11, which is arranged in a plane perpendicular to the longitudinal recess 6 and is mounted in the block-shaped slide part 3a.
- This hinge axis 11 carries a clamping lever 12, the end of which normally engages in the longitudinal recess acts as a clamping lug 12a, which is designed eccentrically with respect to the hinge axis 11, on the cable 2 in the sense of the clamping of the slide part 3a on the cable 2.
- the other end 12b of the clamping lever 12 passing through the passage opening 8 projects beyond the front 9 of the slide 3 and has a fastening eye 13 for the connecting hook of a safety belt.
- the longitudinal recess 6 is widened rearward to form a bowl-shaped bulge 14, which partly serves as a support bearing for the cable section pressed into the bulge 14 by the clamping lug 12a.
- a bowl-shaped bulge 14 which partly serves as a support bearing for the cable section pressed into the bulge 14 by the clamping lug 12a.
- the front 9 of the block-shaped slide part 3a and that of the closure part 3b are stepped from top to bottom and from front to back, the upper step 15 in the same horizontal plane as the top wall of the passage opening 8 and the lower step 16 in the horizontal plane of the floor surface this passage opening 8 are.
- the upper step 15 is preferably used as a limit stop for the clamping lever 12, which releases the cable 2 when it is in contact with the stop 15 and transmits the force acting upwards to the slide 3 at the outer lever end 12b through the safety belt or another means and thus upwards shifts.
- a vertical bore is provided, in which a stepped pressure pin 17 and a return spring 18 are mounted, which constantly acts on the clamping lever 12 in the sense of rope clamping via the pressure pin 17.
- the end web 7 preferably has a recess 22 in the central region, which corresponds to an extension of the passage opening 8 in the region of the longitudinal recess 6 when the slide 3 is in the worn position.
- a safety device 24 on the top 23 of the block-shaped slide part 3a, which on the one hand blocks the pressure pin 17 in the corresponding lower position of the clamping lever 12, so that the cable 2 is inserted because of the access to the vertical Longitudinal recess 6 blocking clamping lug 12a is impossible, and which on the other hand forces the user to hold the fall arrest device 1 in an approximately vertical position when the safety device 24 is unlocked and thus when the longitudinal recess 6 is released, in which the upper side 23 and the pressure pin 17 move upwards are directed.
- the safety device includes on the upper side 23 a locking slide 25 which is guided between two end positions and is loaded in the direction of the blocking position of the pressure pin 17 by means of at least one pressure spring 26. If there is no rope in the fall protection device, the return spring 18 moves the pressure pin 17 into the position shown in FIG. 5, in which the outer part of the clamping lever 12 is pivoted completely downwards and the clamping lug 12a blocks access to the longitudinal recess 6, and in which does not or only slightly protrudes the upper end of the pressure pin 17 over the top 23. If only the locking slide 25 in the front blocking position covers the upper end of the pressure pin 17, the rope cannot be inserted into the fall protection device 1.
- the upper side 23 also carries a stop 28 which interacts with the downward bent rear end 29 of the locking slide 25 and at the same time serves as a support for the one end of the compression springs 26, the other end of which on an inner projection 30 of the gate valve is supported.
- a stop 28 which interacts with the downward bent rear end 29 of the locking slide 25 and at the same time serves as a support for the one end of the compression springs 26, the other end of which on an inner projection 30 of the gate valve is supported.
- its front end In the rearward release position of the locking slide 25, its front end abuts the pressure pin 17, but without being able to hinder its axial movement.
- the (standard) locking bolts 21 are explained: They consist of an outer hollow cylinder which has at one end a collar 31 for engaging behind with middle and index fingers. In the longitudinal bore there is a cylindrical pin 32, one end of which is pushed out of the collar 31 by spring force (FIG. 3). The cylinder pin 32 can be pressed into the hollow cylinder with the thumb. The cylindrical pin has at its other end a control surface located within the hollow cylinder, which cooperates with two balls which are mounted in a radially movable manner in two diametrically opposite bores of the hollow cylinder, but cannot fall out of these bores.
- the actuating mechanism for these locking balls is chosen so that the locking pins can be brought into the locking position solely by pressure on the projecting ends of the cylinder pins 32, in which the locking balls are beyond a bore whose diameter is smaller than the maximum distance of the locking balls, more precisely said, the most distant points of the locking balls, which lie on a line that passes through the centers of both locking balls and thus through the axis of the locking pin. Unlocking, however, is only possible if you simultaneously reach behind the collar 31 with your index and middle fingers and press on the free ends of the cylinder pins 32.
- FIGS. 1 and 3 now show details of a safety device 33 which interacts with the locking bolts.
- An essential part of the safety device 33 is a plate-shaped drop body 34, which is approximately congruent with the closure part 3b and has two elongated holes 35 running parallel to the axis of the longitudinal recess 6 (FIGS. 8 and 9), in each of which an Allen screw 36 engages.
- the attachment takes place in such a way that the drop body 34 can move freely between the closure part 3b and the screw heads under the effect of gravity between two end positions.
- the locking bolts are mounted in such a way and are of such a length that they protrude through corresponding bores in the closure part beyond its outer surface, the locking balls also being located in the region of this outer surface 37.
- this is only possible if there are further bores 38 in the drop body 34 at exactly the right place, which enable the ends of the locking bolts 21 to pass through, as shown in FIGS. 3 and 8.
- These figures show the fall protection 1 in the correct position on the rope 2 or in the appropriate position.
- the drop body 34 is in its one end position in which the relevant ends of the two elongated holes 35 rest on the shafts of the Allen screw 36.
- the two bores 38 in the drop body 34 are exactly aligned with the two bores 20 in the closure part 3b (FIG. 4). The ends of the locking bolts 21 can thus be inserted into the bores 38 in the drop body 34.
- the drop body 34 slides down under the action of gravity until the opposite ends of the elongated holes 35 in turn come to rest against the shafts of the Allen screw 36. In this position of the drop body 34 relative to the carriage 3, however, are aligned the holes 38 no longer the holes 20, so that the locking bolts 21 can no longer be brought to lock with the closure part 3b. For this reason, the fall protection 1 does not reach a fixed position on the rope. The operator of course detects this immediately and brings the fall protection 1 into the correct position according to FIG. 8. If it were possible to anchor the fall protection 1 on the rope 2 in the overhead position according to FIG.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Lowering Means (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3644559 | 1986-12-27 | ||
DE19863644559 DE3644559A1 (de) | 1986-12-27 | 1986-12-27 | An einem seil verschiebbare absturzsicherung |
DE8709183U | 1987-07-03 | ||
DE8709183U DE8709183U1 (de) | 1986-12-27 | 1987-07-03 | Absturzsicherung für die Anbringung an einem Seil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0279929A2 true EP0279929A2 (fr) | 1988-08-31 |
EP0279929A3 EP0279929A3 (fr) | 1989-06-07 |
Family
ID=25850906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87118148A Ceased EP0279929A3 (fr) | 1986-12-27 | 1987-12-08 | Dispositif antichute |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0279929A3 (fr) |
DE (1) | DE8709183U1 (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0678310A1 (fr) * | 1994-04-21 | 1995-10-25 | Froment S.A. | Appareil anti-chute verrouillable automatiquement sur une corde de sécurité |
WO2000024471A1 (fr) * | 1998-10-23 | 2000-05-04 | Latchways Plc | Dispositif de verrouillage bidirectionnel pour appareil anti-chute |
EP1488828A1 (fr) * | 2003-06-18 | 2004-12-22 | Firma Zarges GmbH & Co. KG | Dispositif de sécurité pour dispositifs pour monter, tels que des échelles |
GB2416386A (en) * | 2004-07-17 | 2006-01-25 | John Arthur Walters | Rope clamping device |
WO2013029289A1 (fr) * | 2011-09-02 | 2013-03-07 | He Shaodun | Dispositif de guidage de câble pour dispositif de descente à câble |
CN103182160A (zh) * | 2011-12-27 | 2013-07-03 | 齐德公司 | 用于沿绳索攀升的脚部攀升器 |
WO2014032746A3 (fr) * | 2012-08-31 | 2014-08-14 | Skylotec Gmbh | Coulisseau pour système d'assurage avec élément de guidage |
GB2582587A (en) * | 2019-03-26 | 2020-09-30 | Latchways Plc | Safety line apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2763248A1 (fr) * | 1997-05-14 | 1998-11-20 | Froment Sa | Dispositif anti-chute |
DE29823111U1 (de) | 1998-12-28 | 1999-02-18 | Eduard Kaufmann GmbH, 56567 Neuwied | Sicherungseinrichtung für Seilklemmen |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3703218A (en) * | 1970-07-20 | 1972-11-21 | Otto Brda | Rescuing device |
GB1397064A (en) * | 1971-02-24 | 1975-06-11 | Flowers W H | Fire escape apparatus |
DE2600559A1 (de) * | 1976-01-09 | 1977-07-14 | Pollak Otto F | Abseilvorrichtung |
FR2339566A1 (fr) * | 1976-01-29 | 1977-08-26 | Bugat Francis | Poignee avec came gachette a auto-blocage et a poulie incorporee, utilisable sur cordes lisses |
FR2417988A1 (fr) * | 1978-02-22 | 1979-09-21 | Fujii Denko | Ensemble de securite empechant un ouvrier de tomber |
DE2812073B2 (de) * | 1978-03-20 | 1980-05-08 | Mittelmann & Co Armaturenwerk, 5603 Wuelfrath | SeUsicheningsklemme |
FR2472395A1 (fr) * | 1979-12-26 | 1981-07-03 | Derrien Le Faucheur Yves | Evacuateur d'immeuble en cas de sinistre |
DE3047284A1 (de) * | 1980-12-16 | 1982-07-15 | Otto 8112 Bad Kohlgrub Brda | "abseilgeraet" |
DE3243952A1 (de) * | 1982-11-27 | 1984-05-30 | Walter 8112 Bad Kohlgrub Brda | Abseilgeraet |
US4560029A (en) * | 1984-08-29 | 1985-12-24 | Wgm Safety Corp. | Security device |
US4576248A (en) * | 1984-05-02 | 1986-03-18 | Dan Marom | Rescue and glider device |
DE3510602A1 (de) * | 1985-03-23 | 1986-09-25 | Mittelmann & Co Armaturenwerk, 5603 Wülfrath | Seilsicherungsklemme |
-
1987
- 1987-07-03 DE DE8709183U patent/DE8709183U1/de not_active Expired
- 1987-12-08 EP EP87118148A patent/EP0279929A3/fr not_active Ceased
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3703218A (en) * | 1970-07-20 | 1972-11-21 | Otto Brda | Rescuing device |
GB1397064A (en) * | 1971-02-24 | 1975-06-11 | Flowers W H | Fire escape apparatus |
DE2600559A1 (de) * | 1976-01-09 | 1977-07-14 | Pollak Otto F | Abseilvorrichtung |
FR2339566A1 (fr) * | 1976-01-29 | 1977-08-26 | Bugat Francis | Poignee avec came gachette a auto-blocage et a poulie incorporee, utilisable sur cordes lisses |
FR2417988A1 (fr) * | 1978-02-22 | 1979-09-21 | Fujii Denko | Ensemble de securite empechant un ouvrier de tomber |
DE2812073B2 (de) * | 1978-03-20 | 1980-05-08 | Mittelmann & Co Armaturenwerk, 5603 Wuelfrath | SeUsicheningsklemme |
FR2472395A1 (fr) * | 1979-12-26 | 1981-07-03 | Derrien Le Faucheur Yves | Evacuateur d'immeuble en cas de sinistre |
DE3047284A1 (de) * | 1980-12-16 | 1982-07-15 | Otto 8112 Bad Kohlgrub Brda | "abseilgeraet" |
DE3243952A1 (de) * | 1982-11-27 | 1984-05-30 | Walter 8112 Bad Kohlgrub Brda | Abseilgeraet |
US4576248A (en) * | 1984-05-02 | 1986-03-18 | Dan Marom | Rescue and glider device |
US4560029A (en) * | 1984-08-29 | 1985-12-24 | Wgm Safety Corp. | Security device |
DE3510602A1 (de) * | 1985-03-23 | 1986-09-25 | Mittelmann & Co Armaturenwerk, 5603 Wülfrath | Seilsicherungsklemme |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0678310A1 (fr) * | 1994-04-21 | 1995-10-25 | Froment S.A. | Appareil anti-chute verrouillable automatiquement sur une corde de sécurité |
FR2720283A1 (fr) * | 1994-04-21 | 1995-12-01 | Froment Sa | Appareil anti-chute verrouillage automatiquement sur une corde de sécurité. |
WO2000024471A1 (fr) * | 1998-10-23 | 2000-05-04 | Latchways Plc | Dispositif de verrouillage bidirectionnel pour appareil anti-chute |
US6530454B1 (en) | 1998-10-23 | 2003-03-11 | Latchways Plc | Two-way locking device for height safety apparatus |
EP1488828A1 (fr) * | 2003-06-18 | 2004-12-22 | Firma Zarges GmbH & Co. KG | Dispositif de sécurité pour dispositifs pour monter, tels que des échelles |
GB2416386B (en) * | 2004-07-17 | 2009-06-03 | John Arthur Walters | Rope clamp device |
GB2416386A (en) * | 2004-07-17 | 2006-01-25 | John Arthur Walters | Rope clamping device |
WO2013029289A1 (fr) * | 2011-09-02 | 2013-03-07 | He Shaodun | Dispositif de guidage de câble pour dispositif de descente à câble |
CN103182160A (zh) * | 2011-12-27 | 2013-07-03 | 齐德公司 | 用于沿绳索攀升的脚部攀升器 |
CN103182160B (zh) * | 2011-12-27 | 2016-07-06 | 齐德公司 | 用于沿绳索攀升的脚部攀升器 |
WO2014032746A3 (fr) * | 2012-08-31 | 2014-08-14 | Skylotec Gmbh | Coulisseau pour système d'assurage avec élément de guidage |
GB2582587A (en) * | 2019-03-26 | 2020-09-30 | Latchways Plc | Safety line apparatus |
GB2582587B (en) * | 2019-03-26 | 2023-01-04 | Latchways Plc | Safety line apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP0279929A3 (fr) | 1989-06-07 |
DE8709183U1 (de) | 1987-09-03 |
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