EP0376036B1 - Rescue and/or work basket - Google Patents
Rescue and/or work basket Download PDFInfo
- Publication number
- EP0376036B1 EP0376036B1 EP89122804A EP89122804A EP0376036B1 EP 0376036 B1 EP0376036 B1 EP 0376036B1 EP 89122804 A EP89122804 A EP 89122804A EP 89122804 A EP89122804 A EP 89122804A EP 0376036 B1 EP0376036 B1 EP 0376036B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- basket
- rescue
- bars
- work
- torsion bar
- 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.)
- Expired - Lifetime
Links
- 239000000725 suspension Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
- E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic
-
- 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
- A62B1/02—Devices for lowering persons from buildings or the like by making use of rescue cages, bags, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
Definitions
- the invention relates to a rescue and / or work cage, or the like at the upper end of a pivotable aerial ladder, an extendable mast. is articulated via a hanger.
- the object of the invention is to provide a rescue and / or work basket of the type mentioned, which is simple in construction and can be operated with very little adjustment energy.
- the essence of the invention is the arrangement of at least one torsion bar parallel to the articulation axis of the rescue and / or work cage, the torsion bar being fixed between the basket and the basket hanger.
- two essentially identical torsion bars are provided in an essentially mirror-image arrangement with respect to the width of the basket.
- the torsion bar (s) are able to absorb the weight of the rescue cage and part of the payload resulting from the weight of the cage + payload times the lever arm to the axis of rotation) in the working area of the ladder -15 ° to + 75 °) and thereby the external energy supply for to significantly reduce or save the necessary adjustment mechanism of the basket.
- the kinetic energy from the basket driving position is pivoted over the ladder set) into the working position. This movement is usually done without a payload. This results in an energy surplus for the adjustment mechanism, which is now used to pretension the torsion bars.
- a single hydraulic unit is sufficient to pivot the basket due to the low need for adjustment energy.
- An additional hydraulic unit including the associated power supply line from the gearbox to the tip of the conductor can therefore be omitted (cable drum or hydraulic line).
- the rescue and / or work cage can be arranged in a space-saving manner at the tip of the ladder by folding over the ladder set.
- Another advantage is the good use of space in the rescue cage, for example the arrangement of a stretcher, the storage of which can be easily attached while the stretcher is optimally pivotable.
- the rescue cage (2) is attached to the basket hanger (3) of the uppermost ladder part of the turntable ladder (8) via a swivel gear (4) and two torsion bars (5).
- the two torsion bars (5) which are essentially of the same mirror-image design, are located outside the articulation axis (1) of the rescue cage (2).
- Both swivel gears (4) are driven by a common hydraulic drive (7) in order to carry out the swiveling movement of the basket with respect to the turntable ladder (8).
- the basket (2) is pivoted from its aforementioned non-use position (A) into the 0 ° working position (B) with the aid of the single hydraulic drive (7) in connection with the two swivel gears (4), the two torsion bars (5) are prestressed .
- the center distance between the articulation axis (1) of the rescue cage (2) and the pivot point of the torsion bars (5) results in a small torsion bar adjustment angle.
- the swivel bearing (6) fixed to the basket (2) transmits the spring force of the torsion bars (5) on both sides, since the torsion bars (5) are firmly clamped to the hanger (3).
- the aforementioned swiveling movement between the non-use position (A) and the 0 ° working position (B) of the basket takes place without a payload.
- the pretension of the torsion bars (5) is designed so that the load torque of the basket in the 0 ° working position (B) and part of the payload for the adjustment mechanism become approximately zero.
- the restoring torque of the torsion bars (5) remains approximately constant, since the lever arm of the pivot bearing decreases with respect to the articulation axis (1) of the basket (2) while increasing the restoring force of the Torsion bars (5).
- the pivot bearing (6) describes a narrower circular arc and moves axially on the torsion bar.
- the basket (2) reaches a total swivel range of approx. 165 °.
- the articulation axis can also be located higher or lower with respect to the basket. With a lower pivot axis, the so-called standing basket design results. Access to the vehicle is then made more difficult, but the overall vehicle length is reduced because the basket can be folded over the ladder set.
- the invention can be used in many ways, for example on elevators or telescopic work platforms.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Ladders (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Emergency Lowering Means (AREA)
Description
Die Erfindung betrifft einen Rettungs- und/oder Arbeitskorb, der am oberen Ende einer schwenkbaren Drehleiter, eines ausschiebbaren Mastes od.dgl. über ein Gehänge angelenkt ist.The invention relates to a rescue and / or work cage, or the like at the upper end of a pivotable aerial ladder, an extendable mast. is articulated via a hanger.
Es ist bekannt, an der Leiterspitze einer Drehleiter, insbesondere einer Feuerwehrleiter, einen Rettungskorb in einer hängenden Anordnung zu befestigen, wobei die Aufhängung und die Anlenkachse sich in der Schwerpunktachse befinden. Dadurch ist keine platzsparende Anordnung an der Leiterspitze möglich. Der Korb steht über die Leiterspitze hinaus.It is known to attach a rescue cage to the ladder tip of a turntable ladder, in particular a fire ladder, in a hanging arrangement, the suspension and the articulation axis being in the center of gravity. This means that no space-saving arrangement at the tip of the conductor is possible. The basket protrudes from the top of the ladder.
Eine weitere bekannte Ausführung ist der stehende oder halbhängende Rettungskorb mit außerhalb der Schwerpunktachse befindlicher Anlenkachse (vgl. FR-A-1 591 085). Hierbei treten besonders hohe Verstellkräfte auf, die für eine Senkrechtstellung des Korbes innerhalb des Aufrichtwinkels der Leiter unabdingbar sind. Ein großer Nachteil ist die hierfür erforderliche hohe Verstellenergie an der Leiterspitze. Grundsätzlich werden zwei Hydroaggregate für einen Antrieb benötigt, deren elektrischer Energiebedarf vergleichsweise groß ist.Another known version is the standing or semi-hanging rescue cage with articulation axis located outside the center of gravity (see FR-A-1 591 085). In this case, particularly high adjustment forces occur, which are essential for the vertical positioning of the basket within the upright angle of the ladder. A major disadvantage is the high adjustment energy required at the tip of the conductor. Basically, two hydraulic units are required for a drive, the electrical energy requirement of which is comparatively large.
Aufgabe der Erfindung ist die Schaffung eines Rettungs- und/oder Arbeitskorbs der eingangs genannten Art, der einfach aufgebaut ist und mit sehr geringer Verstellenergie betrieben werden kann.The object of the invention is to provide a rescue and / or work basket of the type mentioned, which is simple in construction and can be operated with very little adjustment energy.
Gelöst wird die der Erfindung zugrundeliegende Aufgabe durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Mittel.The object on which the invention is based is achieved by the means specified in the characterizing part of claim 1.
Vorteilhaft weitergebildet wird der Erfindungsgegenstand durch die Merkmale der Unteransprüche 2 bis 6.The subject of the invention is advantageously further developed by the features of subclaims 2 to 6.
Wesen der Erfindung ist die Anordnung zumindest eines Drehstabs parallel zur Anlenkachse des Rettungs- und/oder Arbeitskorbes, wobei der Drehstab zwischen Korb und Korbgehänge fixiert ist.The essence of the invention is the arrangement of at least one torsion bar parallel to the articulation axis of the rescue and / or work cage, the torsion bar being fixed between the basket and the basket hanger.
Vorzugsweise sind zwei im wesentlichen gleich ausgebildete Drehstäbe in im wesentlichen spiegelbildlicher Anordnung bezüglich der Breitenerstreckung des Korbes vorgesehen.Preferably two essentially identical torsion bars are provided in an essentially mirror-image arrangement with respect to the width of the basket.
Der oder die Drehstäbe sind in der Lage, im Arbeitsbereich der Leiter -15° bis +75° Aufrichtwinkel) das Gewichtsmoment des Rettungskorbes und einen Teil der Nutzlast resultierend aus dem Eigengewicht Korb + Nutzlast mal Hebelarm zur Drehachse) aufzunehmen und dadurch die externe Energiezufuhr für den notwendigen Verstellmechanismus des Korbes wesentlich zu reduzieren bzw. einzusparen. Es wird mithin die kinetische Energie von der Fahrstellung Korb über Leitersatz geschwenkt) in die Arbeitsstellung ausgenutzt. Diese Bewegung erfolgt in der Regel immer ohne Nutzlast. Daraus ergibt sich für den Verstellmechanismus ein Energieüberschuß, welcher nun zum Vorspannen der Drehstäbe genutzt wird.The torsion bar (s) are able to absorb the weight of the rescue cage and part of the payload resulting from the weight of the cage + payload times the lever arm to the axis of rotation) in the working area of the ladder -15 ° to + 75 °) and thereby the external energy supply for to significantly reduce or save the necessary adjustment mechanism of the basket. The kinetic energy from the basket driving position is pivoted over the ladder set) into the working position. This movement is usually done without a payload. This results in an energy surplus for the adjustment mechanism, which is now used to pretension the torsion bars.
Aufgrund des geringen Bedarfs an Verstellenergie genügt in vorteilhafter Weiterbildung der Erfindung ein einziges Hydroaggregat zum Verschwenken des Korbes. Ein zusätzliches Hydroaggregat einschließlich der zugehörigen Energieversorgungsleitung vom Getriebe bis zur Leiterspitze kann damit entfallen Kabeltrommel oder Hydroleitung). Der Rettungs- und/oder Arbeitskorb kann an der Leiterspitze durch Überklappen über den Leitersatz platzsparend angeordnet werden.In an advantageous further development of the invention, a single hydraulic unit is sufficient to pivot the basket due to the low need for adjustment energy. An additional hydraulic unit including the associated power supply line from the gearbox to the tip of the conductor can therefore be omitted (cable drum or hydraulic line). The rescue and / or work cage can be arranged in a space-saving manner at the tip of the ladder by folding over the ladder set.
Dies geht mit einer Verkürzung der Fahrzeuggesamtlänge einher. Von Vorteil ist ferner die gute Raumausnutzung des Rettungskorbes, beispielsweise die Anordnung einer Krankentrage, deren Lagerung einfach angebracht werden kann bei einer optimalen Verschwenkbarkeit der Trage.This is accompanied by a reduction in the overall length of the vehicle. Another advantage is the good use of space in the rescue cage, for example the arrangement of a stretcher, the storage of which can be easily attached while the stretcher is optimally pivotable.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügte schematische Zeichnung näher erläutert; es zeigt:
- Fig. 1 die Anordnung eines Rettungskorbes in schematischer Seitenansicht halbhängend in der Nichtbenutzungs- oder Fahrstellung A, in der 0°-Arbeitsstellung B sowie in der 75°-Arbeitsstellung C, und
- Fig. 2 den Rettungskorb nach Fig. 1 in der 0°-Arbeitsstellung B in schematischer Draufsicht.
- Fig. 1 shows the arrangement of a rescue cage in a schematic side view semi-hanging in the non-use or driving position A, in the 0 ° working position B and in the 75 ° working position C, and
- Fig. 2 shows the rescue cage according to Fig. 1 in the 0 ° working position B in a schematic plan view.
Der Rettungskorb (2) ist über ein Schwenkgetriebe (4) und zwei Drehstäbe (5) am Korbgehänge (3) des obersten Leiterteils der Drehleiter (8) befestigt. Die beiden im wesentlichen gleich ausgebildeten spiegelbildlich angeordneten Drehstäbe (5) befinden sich außerhalb der Anlenkachse (1) des Rettungskorbes (2). Beide Schwenkgetriebe (4) werden durch einen gemeinsamen Hydroantrieb (7) angetrieben, um die Schwenkbewegung des Korbes bezüglich der Drehleiter (8) durchzuführen.The rescue cage (2) is attached to the basket hanger (3) of the uppermost ladder part of the turntable ladder (8) via a swivel gear (4) and two torsion bars (5). The two torsion bars (5), which are essentially of the same mirror-image design, are located outside the articulation axis (1) of the rescue cage (2). Both swivel gears (4) are driven by a common hydraulic drive (7) in order to carry out the swiveling movement of the basket with respect to the turntable ladder (8).
Die Anordnung und Fixierung der Drehstäbe (5) am Korb und am Gehänge (3) ist nun so getroffen, daß die Drehstäbe (5) bei einer horizontalen Nichtbenutzungsstellung (A) des Korbes (2) und der Leiter (8) im wesentlichen entlastet sind, d.h. in der Fahrstellung einer Feuerwehrleiter.The arrangement and fixation of the torsion bars (5) on the basket and on the hanger (3) is now such that the torsion bars (5) are substantially relieved in a horizontal non-use position (A) of the basket (2) and the ladder (8) , ie in the driving position of a fire department ladder.
Wird der Korb (2) aus seiner vorgenannten Nichtbenutzungsstellung (A) in die 0°-Arbeitsstellung (B) mit Hilfe des einzigen Hydroantriebs (7) in Verbindung mit den beiden Schwenkgetrieben (4) geschwenkt, so werden die beiden Drehstäbe (5) vorgespannt. Durch den Achsabstand zwischen der Anlenkachse (1) des Rettungskorbes (2) und dem Drehpunkt der Drehstäbe (5) resultiert ein geringer Drehstab-Verstellwinkel. Während der Schwenkbewegung überträgt das am Korb (2) fest montierte Schwenklager (6) die Federkraft der Drehstäbe (5) auf beiden Seiten, da die Drehstäbe (5) jeweils am Gehänge (3) fest eingespannt sind. Die vorgenannte Schwenkbewegung zwischen der Nichtbenutzungsstellung (A) und der 0°-Arbeitsstellung (B) des Korbes erfolgt ohne Nutzlast. Die Vorspannung der Drehstäbe (5) ist so ausgelegt, daß das Lastmoment des Korbes in der 0°-Arbeitsstellung (B) und ein Teil der Nutzlast für den Verstellmechanismus annähernd gleich Null wird.If the basket (2) is pivoted from its aforementioned non-use position (A) into the 0 ° working position (B) with the aid of the single hydraulic drive (7) in connection with the two swivel gears (4), the two torsion bars (5) are prestressed . The center distance between the articulation axis (1) of the rescue cage (2) and the pivot point of the torsion bars (5) results in a small torsion bar adjustment angle. During the swiveling movement, the swivel bearing (6) fixed to the basket (2) transmits the spring force of the torsion bars (5) on both sides, since the torsion bars (5) are firmly clamped to the hanger (3). The aforementioned swiveling movement between the non-use position (A) and the 0 ° working position (B) of the basket takes place without a payload. The pretension of the torsion bars (5) is designed so that the load torque of the basket in the 0 ° working position (B) and part of the payload for the adjustment mechanism become approximately zero.
Wird der Korb weiter in die 75°-Arbeitsstellung (C) bewegt, bleibt das Rückstellmoment der Drehstäbe (5) annähernd konstant, da sich der Hebelarm des Schwenklagers bezüglich der Anlenkachse (1) des Korbes (2) verringert unter gleichzeitiger Zunahme der Rückstellkraft der Drehstäbe (5). Hierbei beschreibt das Schwenklager (6) einen engeren Kreisbogen und verschiebt sich axial auf dem Drehstab. Der Korb (2) erreicht einen Gesamtschwenkbereich von ca. 165°.If the basket is moved further into the 75 ° working position (C), the restoring torque of the torsion bars (5) remains approximately constant, since the lever arm of the pivot bearing decreases with respect to the articulation axis (1) of the basket (2) while increasing the restoring force of the Torsion bars (5). Here, the pivot bearing (6) describes a narrower circular arc and moves axially on the torsion bar. The basket (2) reaches a total swivel range of approx. 165 °.
Obgleich der in Fig. 1 gezeigte Rettungskorb (2) in der halbhängenden Ausführungsform gezeigt ist, kann die Anlenkachse auch höher oder tiefer bezüglich des Korbes gelegen sein. Bei einer tiefergelegenen Anlenkachse ergibt sich die sog. stehende Korbausführung. Zwar wird dann der Einstieg über dem Fahrzeug erschwert, dafür verringert sich aber die Fahrzeuggesamtlänge, da der Korb über den Leitersatz geklappt werden kann.Although the rescue cage (2) shown in Fig. 1 is shown in the semi-hanging embodiment, the articulation axis can also be located higher or lower with respect to the basket. With a lower pivot axis, the so-called standing basket design results. Access to the vehicle is then made more difficult, but the overall vehicle length is reduced because the basket can be folded over the ladder set.
Die Erfindung ist vielfach anwendbar, beispielsweise bei Hubsteigern oder Teleskop-Arbeitsbühnen.The invention can be used in many ways, for example on elevators or telescopic work platforms.
Claims (6)
characterised in that
at least one torsion bar (5), which is fixed to the basket (2) and to the suspension arrangement (3) of the basket, is arranged parallel to the pivot axis (1), in which the torsion bar is situated outside the pivot axis and the pivot axis is situated in the region of the axis through the centre of gravity of the basket (2).
characterised in that
two torsion bars (5) of substantially identical construction are provided in a substantially mirror-image arrangement with respect to the extent of the width of the basket (Fig. 2).
characterised in that
a single hydro-drive is provided for the swivelling of the basket (2).
characterised in that
the torsion bar or bars (5) are unloaded when the basket (2) and the ladder (8) are in a horizontal position of non-use (A).
characterised in that
the prestressing of the torsion bar or bars (5) outside the pivot axis is designed, through a corresponding arrangement and fixing on the basket (2) and also on the suspension attachment (3), such that the load moment of the basket (2) in its 0° working position (B), i.e. in the vertical position of the basket with a substantially horizontal turntable ladder, and a portion of the working load for the adjustment mechanism becomes equal to zero.
characterised in that
the prestressing of the torsion bar or bars (5) outside the pivot axis is designed, through arrangement and fixing on the basket (2) and also on the suspension attachment (3), such that on a further rotating motion of the basket (2) of approximately 75° in the direction of the 75° working position (C) of the basket (2), the restoring moment of the torsion bars (5) remains substantially constant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3842666A DE3842666A1 (en) | 1988-12-19 | 1988-12-19 | RESCUE AND / OR WORK BASKET |
| DE3842666 | 1988-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0376036A1 EP0376036A1 (en) | 1990-07-04 |
| EP0376036B1 true EP0376036B1 (en) | 1992-05-20 |
Family
ID=6369501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89122804A Expired - Lifetime EP0376036B1 (en) | 1988-12-19 | 1989-12-11 | Rescue and/or work basket |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0376036B1 (en) |
| JP (1) | JPH0817837B2 (en) |
| DE (2) | DE3842666A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4405594A1 (en) * | 1994-02-22 | 1995-08-24 | Paul Lingen | Add-on crane for a mobile implement |
| JP7341094B2 (en) * | 2020-03-25 | 2023-09-08 | 株式会社日立ビルシステム | Hoistway working device and its posture stabilization method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2500815A (en) * | 1947-03-10 | 1950-03-14 | Gerli | Flying stage |
| DE1559650B1 (en) * | 1966-08-12 | 1970-06-25 | Kloeckner Humboldt Deutz Ag | Device for parallel guidance of a pulpit attached to the upper end of a ladder or a mast |
| FR1591085A (en) * | 1968-03-14 | 1970-04-27 | ||
| US3710893A (en) * | 1971-06-21 | 1973-01-16 | Bliss & Laughlin Ind | Portable extendible crane with work basket |
-
1988
- 1988-12-19 DE DE3842666A patent/DE3842666A1/en not_active Withdrawn
-
1989
- 1989-12-11 DE DE8989122804T patent/DE58901497D1/en not_active Expired - Lifetime
- 1989-12-11 EP EP89122804A patent/EP0376036B1/en not_active Expired - Lifetime
- 1989-12-18 JP JP1328108A patent/JPH0817837B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0376036A1 (en) | 1990-07-04 |
| DE3842666A1 (en) | 1990-06-21 |
| JPH02213363A (en) | 1990-08-24 |
| DE58901497D1 (en) | 1992-06-25 |
| JPH0817837B2 (en) | 1996-02-28 |
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