DE1708078A1 - Mobile turntable ladder - Google Patents

Description

The invention relates to a mobile turntable ladder old pass-through basket arranged at the top Inclusion of τοη persons and concerns inabee especially such Ladders that are self-employed and / or motor-driven and

K) O <D OO

As is well known, turntable ladders are the chain device for Chaining people in the event of a disaster, Ee has already begun, an access basket at the top of the aerial ladders to be arranged via a holding device at the free end of the top ladder section of a set Telescopic ladder park that can be pushed into one another called so angelic that he ever sioh according to the angle of inclination further opposite the horizontal

• ANKκοντό Dresdner Bank AG. Frankfurt am Main No. iioiio

No. a * «** o Frankfurt

as a result of its own weight in üie benjirechte, aas means so, last. his? oaen- or step platform is horizontal. As a result of the applicable unfair wage provisions, in particular, some of the people who have to take the shuttle to these lörbe are only allowed to climb them if they have been straightened out, pushed out and the engine turned off. As a result, if you have not yet known the turntable ladder construction, you must first climb up to the top of the ladder, then you must be grounded, and only then you have to climb it. x »this works especially when the turntable ladder named Δ-construction in & atastropxia to ^ initiate *" en ~

^# eineeetztschenleben * as uas, for example, in the case of large fires, multi-storied iJauwerite about x-all his jcann, valuable time lost, the ladder ir. a seiche position is brought, uaii by the geiä ^ ra ^ -eeii ^ auwex ^ her aer xiurcustie ^ itorD may and can be climbed. Likewise, there is a loss of time, which, for example, can often enter the stairway in order to

to bring old and frail or injured people into them.

The same accident prevention regulations also forbid the Dekennten turntable ladder constructions from people being in the xair standing basket during the movement of the rider. The reason for this is its pendulum movement during and as a result of the further movement. This results in another essential one. Disadvantage: If it is a matter of transporting handicapped or injured people who have been lucky enough to get from the endangered place into the access basket via aie, it is necessary for helpers to carry these people down or over the ladder with the ladder held immobile pass a chain of helpers from foann to man. Also here 209815/0307

8AD OBiGiNAL - 3 -

valuable time will be lost in the saving of human life, which, as has been shown, can be decisive for a number of the rescued animals, and a considerable number of helper personnel is necessary to help with these well-known constructions To bring the most continuous flow of people to be rescued over the ladder to the ground. In addition, if a helier chain is used, which also adds a considerable weight to the weight, which, depending on the position of the operator, special supports - the door of the, mbetrieb- (tk

iringuug wieaer.ua a certain time is necessary - ^

must be provided.

In order to shorten the erioraenichen time during aen decant ion expressions at least to a slight extent, one has afterwards equipped Gen. Durchstiegicorb optionally with a hydraulic coupling or a hydraulically acting isreinszylinaer, in order to be able to slow down the rotating movement, so that it arises at daaurc Set up the ladder iniolge aer jsrascnwere independently one penaelx, calibrate "in aen perpendicular stellx". ■ These as mecnanische oaer hydraulic .bremsen wirxenaen «to 1 tonne jeaocn lediglioM shorten the oil,%

aie oune this uiliauiittel arose earlier ale waiting time, i

until the tendon movement of the access basket, which is around the more violent it was, the faster and steeper the ladder park was extended or erected, as far as it had calmed down, The access basket was in its respective single operating position, which has now been finally determined for a special application could be locked.

Entering the access basket while the! »Eiterpark is being pulled out is subject to the accident prevention regulations also :. not made possible by it.

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This means that you always have to go to the best part of the time lost, which is attributable to the processes of extending and swiveling in the further. Can be anueren also the further iiachterii through this known measure do not switch off, namely that before the ladder is pulled in as well as before it is swiveled, it is cleared by people have to be. As a result, such a known construction fails for the applications where it applies to injured or people who are no longer accurate or able to climb from grower none or over a large length of ladder bridge to rescue.

Mobile articulated mast platforms, which are also known as nubsteiger or snorkel, are already known purely in terms of assembly or the i'all of individual rescue,> e. With these devices, the platform is broken into the horizontal position and held in this position at the various inclinations of the boom via telescopic shafts and angle drives. Other constructions of JüiicJanastbühnen have platforms that are positively controlled via rods and parallel guides that are attached to the lever arms. This mobile Kiiicicmastbuhnen have besides the fact they AASS based on a too föraernde crowd, only the puncture of a "jj'ähre · ¹ and not, as the function of at turntable ladders" bridge "üaben with konuinuierlichem Menschenfiuß, Other key i ^ achteij. That they are therefore generally suitable as an alarm device for the fire brigade, for example, that such a device is very heavy and therefore usually cannot be brought to the site of operation quickly enough, and that the movement times of the enormous momentum forces must be slow because of the relaxation, which results because of the large number and size of parts that need to be assembled with particular precision compared to

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corresponding! turntable ladders with access coro higher rice.

The invention is generally based on the novel and inventive task of arming a rescue device, aas for both types of use, namely both for individual rescue by taking one or more people in the access basket and retrieving the throughput basket during operation as well as for rescue of a continuous M ously over the conductor descending number of people in bridge operation, no time delay is so for disposal W that t quickly Jiinsatzort Drin ^ bar and can be brought to this in the working position is provided as a real Alarmfgera /. That advises according to the invention is to avoid the disadvantages of the known turntable ladder constructions with pendulous and snap-through walk-through cages as well as the disadvantages of the known articulated platforms and in a simple, una cheap way to create a possibility for people from aicuten, in which in In most cases, the speed aen jsri'olg a bed decides, pji recover. "| [

The invention is characterized by the fact that with one accessible, in particular self-sufficient and / or motor-driven, Turntable ladder with access basket arranged at the top of the ladder to accommodate people aerart at the tip of the pus by means of a holding device is held that it depends on the angle of attack The ladder can be swiveled without swinging relative to the horizontal by applying an additional constraining force, that his floor or step platform shape is always horizontal Position.

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The invention results in a large number at the same time of advantages. By using a turntable ladder Entrance doors are particularly important in terms of time, aie from the low flywheel mass and aem low weight of this aerates with each train also ate light and fast transportability to the uinbatzort and aeafaen also easy, easy and extremely fast maneuverability at the starting point also in connection with the Köglie'rjceit, to be able to bridge extremely large seams or widths. At the same time, the durcr; the remaining accident prevention regulations. i'erner needs aie in the jiorb To use a hydraulic or mechanical brake to stop the basket, as it is free of pens due to an additional constraining force, depending on the angle of attack of the Head is guided and held relative to the horizontal. Eeide operating modes, namely "ferry operation" and "bridge operation" »Ina equally possible, whereby already when extending and swiveling out aer -" pus people are in Access basket can be located.

The invention is aimed at achieving these advantages both from the well-known turntable ladders with a pendulous basket as well as new ones deviating from the known articulated mast platforms, without compromising on aen constructive Features of these known constructions use aachen. The transfer of the known from articulated mast platforms The platform is held straight by means of telescopic shafts and angled drives on turntable ladders with access cage for example, with turntable ladders with a 30 meter rise telescopic shafts with extension lengths of more than 20 meters »require which calibrate with the associated winter shoots (cone and Worm drives), apart from the ice, unbearably difficult

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could be built, quite apart from the fact that the advantage of low weight and low centrifugal mass would be lost as a result. The aeraästellung by means of rods and parallel guidance is useless with turntable ladders, since these are telescoped out and would oppose the uestängeuna parallel guide parts. As a result, a telescopic shaft of such dimensions would also reinforce the replacement part and, as a result, reinforce the rotating tower, which would be more inert, which in turn would require a heavier vehicle with all of its disadvantages already explained above. W.

in a further development of the invention can one with the Integrated swiveling device be provided, the actuation of which is dependent on of the pivoting movement of the rider in the vertical direction takes place, a further advantageous embodiment of the Invention is characterized by aaaurch, aass the ächwenKeinrientging one independent, in two positions Has drive that via a control device by means of the change in the angular position of the ladder opposite ier ♦ so horizontal derived impulses * can be actuated that he drives the access basket via a transmission device in the sense of maintaining the horizontal position.

According to the invention, the drive of the swivel device be designed in such a way that it can be activated by the operating staff after a desired hilarity and corresponding positively controlled horizontal position of the floor platform of the uurchstiegicorhes can be blocked so that the floor platform can also be loaded with considerable weights without pivoting with respect to the conductor axis, in. However, further tweckaäüiger design of the binding can the drive of the pivoting device must also be designed in such a way that

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he AASS itself in aer .V'aagerechtsteliung üer Bodenplattforui of Average tie _e;. basket corresponding üteliun ^ so establishes that regardless of the load aer bottom platform, this always receives one of the respective iieitersteilung or inclination corresponding horizontal division also aanri and This is held if the inclination of the ladder park changes as a result of its vertical pivoting.

One embodiment has proven to be particularly advantageous α of the invention proved, which is characterized by ^,

aass the drive aer bchwenkeinrichtung as. is formed otor a me- chanical üraftübertragun W ;; seinrichtung wirkenaer the jjurcrjstieg- KotB ... Appropriately, the mechanical power transmission device can be designed as a screw spindle that is in direct contact with the rotor, on which an overhead nut, which is connected via at least one push rod to a pick-up for the opening basket, is aciusially verscn ^ .bbar. For particularly long and heavy ladder constructions, such as those used on Feueriötsch-öchiffs, for example, the liotor can be designed as an internal combustion engine of any known type. Young special P simple and easy constr iction, however, results from the fact that L aaß über _it .otor as in one of two directions in Aunänj ₃ iglceit from the weaning of the ^ pus betatigoartr iieictroiüoxor., Ebij.det iat. The electrical energy can be derived from the vehicle axxerie or from one of the other stiaXiori ^ .ren jDax ^ erie. ; .. e :. , '. eratn. The weights are obtained from the weights of the iCotor and the transmission device. If this auxiliary drive is designed as a drive that works with electrical energy,

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so results in particularly light weights in loading * a _re i _c h <j _it ij _G iterspitze. Experience has shown that an installed electrical output of around 200 watts is sufficient for the "usual set of conductors mounted on a motor vehicle chassis by means of a rotating tower and carriage, which means that the servo drive (auxiliary drive) is relatively light. This weight can be reduced by replacing the shunt winding of the Electric motor by natural magnets even further considerably m ve rr inge rn. ^

The drive of the swivel device can, however, also be so be designed that the motor is designed as an operable motor in one direction of rotation and with the screw spindle is coupled via a reversing gear, which depends on the change in incline of the ladder is switchable.

In all of the described exemplary embodiments of the invention with a mechanical power transmission device according to the invention regardless of the type of design of the engine as an internal combustion engine or an electric motor with or η without reversing gear, only a relatively short f and therefore light and quick and energy-saving drivable Screw spindle (transport screw) and a short, light rod consisting of at least one push rod are required.

Another advantageous embodiment of the invention is characterized in that the drive of the pivoting device designed as a motor acting on the breakaway basket via a hydraulic power transmission device is. A hydraulic pump can be provided with its directly coupled motor in one of two

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Direction of rotation depending on the change in inclination of the ladder is actuatable. The hydraulic power transmission device but may equally also a reusable slider, preferably a solenoid-actuated control slide, comprise the head of the eigungsänderung depending on the & operable is. Finally, the constraining force (servo force) which can be brought into effect on the access cage could also be generated by establishing a hydraulic connection to the hydraulic system of the turntable ladder via the ladder. Whether a mechanical or hydraulic power transmission device is used depends on the requirements of the individual case. In most cases, the drive with a hydraulic power transmission device will be lighter in weight, but more expensive, and the drive with a mechanical power transmission device will be somewhat heavier, but cheaper.

An expedient embodiment of the invention is characterized in that the control device has a the respective change in inclination of the ladder appealing Has a measuring transducer and a pulse transducer which converts the measured value into pulses and which drives the swivel device are supplied as control pulses. It has been found to be advantageous if the measured value and pulse generator, a pendulum switch acting as a plumb switch, a gyro switch or a liquid balance are provided.

The simple and space-saving construction for the swivel device with drive and power transmission device, which is forcibly controlled by the change in the ladder inclination relative to the horizontal, brings with it the possibility of the invention according to a further 20981R / 0307 in a simple, inexpensive and space-saving manner

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170 au 78

To further develop inventive ideas. According to this invention thought can also have an ineffectiveness on the angle of the ladder compared to the Horizontally dependent device as a backup in the event of the complete or partial failure of the swivel device be provided through which a pivoting in the Pail of such a failure of the pivoting device of the access basket opposite the ladder is prevented. This security device is used to prevent the access basket under the effect of the load contained in it, for example the one located in it Persons could then pivot towards the ladder if due to some damage in the pivoting device, for example a break in the screw spindle and / or the push rod and / or a defect in the engine or gearbox or a failure of the hydraulic system that locks the access cage Servokreft fails. This ensures that even if a defect or a There is a blockage of the swivel device due to any circumstances, one working in bridge mode Turntable ladder according to the invention remains operational, but also one in ferry operation working turntable ladder retracted according to the invention without danger to people in the access basket and lowered in the retracted state relatively safe for the occupants of the access basket can be.

An expedient further development of the design according to this inventive concept is characterized by that the safety device as the drive of the swivel

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device in the sense of its actuation in the direction of a reduction in the inclination of the ladder corresponding Pivoting the floor platform of the access basket supporting auxiliary drive is formed. This has the effect that the security device Drive of the swivel device is supported and at least partially relieved when it is in use the turntable ladder according to the invention deliver its greatest torque or its tensile force on the holding device must raise for the access basket, namely when lowering the ladder park under load in the Phrenbetriebo A particularly simple and practical design results from the fact that the safety device as loaded via an energy storage device on Through basket articulated push or pull member is formed. A particularly simple, space-saving and cheap design is characterized in that the safety device as a tension member via an energy storage device, preferably has a spring accumulator, loaded on train rope, which in the area of its on the access basket hinged end to keep the force acting in the rope constant over a circular arc path Swivel segment of the holding device is guided.

In this case, both the pivoting device and the securing device can be acted upon individually or jointly as soon as the pivoting device fails. In some cases, however, it can be expedient to allow the access basket to pivot relative to the inclined ladder axis within certain limits, only when the pivoting device and / or safety device are blocked when they are reached. Accordingly, a 209815/0307 is identified

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170Ö078

Another embodiment of the invention in that a device is additionally provided which, when reached a predetermined, preferably adjustable, not depending on a change in the inclination of the The ladder changing the angle between the floor platform of the access basket and the ladder axis Swivel device and / or the safety device blocked. Advantageously, an actuation *

the drive of the swivel device and / or a loading ™

activity of the protection scheme depending on f |

Blocking clamping members or switches provided via preferably adjustable limit switches given pulses be. With adjustable limit switches, a certain angular range can be set by setting them for a swiveling of the access basket relative to the ladder axis when the swiveling device is disturbed as permissible, whereby when these limits are reached for the specified swivel range of the Access basket relative to the ladder axis via clamping members the safety device is blocked in such a way ~

that it prevents the trapdoor basket at a further Verschwen-% effect and to hold it in position reached l

holds. However, the action can also act on the pivoting device take place, for example with the help of clamping members or other blocking elements, those on the push rod, screw spindle, spindle nut or, in the case of a hydraulic piston, on its piston rod act, or for example by means of switches on the engine, hydraulic locking blocks on the hydraulic cylinder, Hydraulic pump or reusable slide come into effect.

The invention also offers the possibility of

209815/0307

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to cope with another task with the simplest and cheapest means in an inventive way. The access basket is primarily used to rescue disabled or injured people and children. In the previously known Dröieiter constructions with a hanging access basket, those who can walk must first get into the basket, climb a small ladder in the basket and turn 180 degrees at the top in order to be able to reach the ladder. If injured people are to be rescued over the ladder in bridge operation, the difficulties are increased by the fact that the helper carrying the injured person from the access basket over its small ladder has to turn 180 degrees with his load on the tip of the pus. While in the previously known constructions with a suspended access basket swinging around a pivot point higher than the floor platform, the distance between the platform and the top rung of the ladder changes with every ladder inclination due to the swinging in, thus making climbing from the ladder onto the platform partially impossible However, this is always associated with dangers, for example the forced control of the access basket according to the invention brings a significant improvement in these circumstances, but cannot completely switch off another guard part. Although the commute and the associated change is off the distance between the uppermost rung of the ladder set and the uppermost rung of the small ladder in trapdoor basket at a predetermined working position of the conductor Parkes by the invention, but still this distance changes when hanging trapdoor basket with the change the ladder slope · This works

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17Q8Ü78

This is particularly disadvantageous and dangerous if the people in the step-through basket want to or should dismount during the ladder entry process, i.e. when the ladder incline changes, because the distance between the top rungs of the ladder park and the small access ladder is inevitable ii: through basket changes. However, changes in the step height or the step distance increase the probability of an accident, as does the fact that the j | Person only has to turn through 180 degrees while standing on a narrow rung of the ladder in order to reach the M top ladder section of the ladder park as safely as possible.

The other problem recognized for the first time and only solvable in connection with the invention is thus that the turntable ladder according to the invention is to be designed so that the path over the ladder park into the access basket and back without changing steps.

This additional object is achieved by a further inventive idea, which is characterized characterized in that the trapdoor basket is% articulated to the ladder top so that its Bodenpiattforir. a position at about level i

the last rung of the ladder. With such a the access basket, which can also be referred to as "standing", can be the one entering or exiting the basket Person without swinging the access basket and regardless of the respective ladder inclination without danger from the ladder Change to an access cage or vice versa without having to climb up in the access cage is. This means an unhindered and continuous flow of people when used in bridge operation Turntable ladder guaranteed according to the invention.

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The invention is the same as with the known turntable ladder constructions the access basket is held in its holding device so that it is before the ladder park is extended hung on the tip of the ladder and detached from the tip of the ladder again after the end of use and on suitable place of the vehicle - mostly below the pushed-together ladder park behind the driver's cab of the vehicle - be hung up for transport

φ can. The access basket must therefore after the end

α insert can be removed from the lieiterspitze since he then, if it is designed as a hanging structure, hang the driver of the vehicle in front of the field of vision and this * in the requirements of road safety would not hinder in a corresponding way, and on the other hand, if it is a so-called standing construction is designed, the height of the vehicle would increase so that its freedom of movement therefore would be severely restricted because there are then, for example, bridges with low headroom or electrical Catenaries of trams or the like are not

^ more could happen. On the other hand, however, brings one Construction with a walk-through basket that can be

P ratzort carried separately from the ladder and after Completed use must be removed again, regardless of whether this access basket is arranged hanging or standing is, there are significant disadvantages: Especially when the speed over the success of a Rescuing people from acute dangers is decisive, namely when the turntable ladder is on site has arrived and is put into working position, a valuable part of the guide time is used as assembly time lost for hanging up the access basket "

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A further inventive idea which expediently further develops the invention enables the solution of the problem which arises from the previously described requirements, which were previously in a certain contradiction to one another. According to this novel and inventive task of the via basket should no assembly time are immediately available to attach, but should be easily removable if necessary nevertheless, to enable φ that the ladder can be used in urban driving or Wasserturmein- M set, and finally to the Ladders can also be available in the event of a disaster with attached access cage and direct, safe access, whereby a risk-free option to climb from the building into the access cage is guaranteed.

The solution to this additional task according to this further inventive concept is characterized in that the holding device is designed so that the J

Access basket in a richt corresponding to this ladder position Position, preferably in relation to its "position corresponding to this ladder position by about 90 degrees in the sense of the ladder position intended for maximum ladder inclination relative to the horizontal corresponding position folded position, durable * for is. This further training form of the invention is suitable * Use both on known turntable ladder constructions with hanging, swinging access cage as well as with Turntable ladders according to the invention with hanging or standing positively controlled access cage. When combined with the last option described, aich results

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Particularly expedient, because the production and assembly are particularly simple and inexpensive to design and simple and operationally reliable to use further embodiment of the invention in that the pivoting device is designed so that it can be switched over and so actuated after reaching the position of the access basket corresponding to the horizontal ladder position is that it brings the holding device into a position in which the access cage W is a position not corresponding to this ladder position, preferably a position corresponding to this ladder position by about 90 in the sense of its ladder position corresponding to the ladder position provided for maximum ladder inclination relative to the horizontal Position folded position, assumes.

The development of the invention according to this inventive concept is from the Federal Association of Municipalities Accident insurer approved and even as a related

^ judged fit to fire. When the ladder is put down

(Horizontal position) the access basket can be opposite

ψ of the ladder axis remain in the swiveled position on the tip of the ladder. The driver's view is not obstructed by the durability basket. Although the turning circle of the vehicle with the access basket remaining at the top of the ladder is increased somewhat, experience has shown that it is still cheaper than many turntable ladders in service today without a basket attached. The start-up of a turntable ladder designed according to the invention in this way at the place of use now takes place in a time-saving manner as follows

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when folded flat, access basket is either by a simple lever handle immediately raised by hand or by pressing a push button or another suitable Schalteleiaentes the pivoting device can be switched so that the access basket has approximately a position corresponding to the respective ladder inclination. When erecting and pulling out the ladder park the access basket is then driven by a motor and automatically positioned. Due to the fact that it was canceled liot required, only at the place of use Having to attach the access basket to the top of the ladder, Valuable seconds are saved, which are available in the event of a disaster for the quick rescue of people from danger stand.

The invention is explained in more detail below with reference to several embodiments shown in the drawings. Show:

Pigur 1 a self-propelled and motorized turntable ladder trained with an access basket arranged at the top of the ladder to accommodate people Embodiment of the invention in side view, 'with three conductor positions shown schematically are, namely the storage or horizontal position, an intermediate position at an angle of about 30 ° opposite the horizontal and a position corresponding approximately to the end position with maximum inclination vertical access basket lowered according to the ladder inclination;

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FIG. 2 shows, in a purely schematic side view, the end region of the conductor part of the conductor park that forms the conductor tip with arranged on this through basket and holding device for this, the on the Holding device acting swivel device designed mechanically acting and one as an auxiliary drive trained safety device is provided;

^ Figure 3 in Figure 2 corresponding schematic representation

Another embodiment of the creation

W finding in which the swivel device for

the access basket is designed to act hydraulically;

Figure 4- in the figure 3 corresponding representation another hydraulic swivel device for the access basket; and

Figure 5 in the figure 1 corresponding representation driving House-side part of the self-propelled and motor-driven turntable ladder according to Figure 1 in the

P ment with from the abandonment of the ladder park

k corresponding position of the access basket to et

wa 90 swiveled out access cage, whereby the support-side part of the turntable ladder is not shown is.

In the turntable ladder shown in Figures 1 and 5 is with the chassis of the turntable ladder, with 2 of the rotating tower the ladder park consisting of ladder sections 3a, 3b, 3c, 3d and with 4 the drive, designed as a hydraulic cylinder, for the pivoting movement of the ladder pool in Vertical direction. The horizontal lay-down position 3y of the ladder park is shown in solid lines

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shown, and in dash-dotted lines at an angle of inclination "fj-j- to the horizontal of about an intermediate position of the ladder park, the individual ladder parts 3a, 3b, 3c, 3d can be seen, and also at an angle of inclination ^ tjj to the horizontal of about 80 ° the position for the maximum inclination of the ladder - in the case shown in the retracted ladder position - shown. These ladder positions are denoted by 3j or 3tj or W 3jjj, this denoting the respective ^ j ladder inclination relative to the horizontal Ptj or * tj or ⁰ C j ^ - corresponds.

As can be seen, in each ladder position 3j or 3jj or 3jjj, the access basket 5 held at the ladder tip 3d by means of a holding device 6, 7 hinged to it is shown in a lowered position *, that is, in such a position, that his floor or step platform 5a always assumes a horizontal position. The position of the floor platform 5a relative to the ladder axis changes * for each ladder position 3j, 3jj or 3jjj_. The i positions of the access basket 5 assigned to the W respective ladder position 3j or 3jj or 3jj_ ·] - are denoted by 5j or 5j_j or 5jjj, and correspondingly the angles of inclination between the floor platform 5a and ladder axis 3 are denoted by P- ^ or ^ ₁₁ or Aiii » It should be noted that due to the fact that the lay-down position is also the horizontal position, H ₁ - O ⁰ and ^ ₁ * 180 °.

The mounting device only indicated in FIG 6.7 is in Figure 2 for the embodiment shown in this a mechanically acting swivel device

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for the access basket D relative to the ladder 3 in larger Scale shown. A support frame made of preferably welded profile rod material forms in conjunction with a floor or step platform 5a and suitable wire mesh or sheet metal parts the access basket 5. This is to be selected by a person skilled in the art according to the needs of the individual case and is therefore not shown in more detail Way hung and held securely on a pair of pivot segments, each of which is made of profile rod material is welded together so that between the two outer rod parts of each pivot segment 7 an angle of about 90 ° is formed, and in which the respective free ends of these rod parts are designed in the shape of a circular arc Connecting part 7a are connected. The pivoting segments 7 are with one of their end faces the receptacle 6 for the access basket 5 in ^ irk connection, and in the area of the free end of its other rod parts the pivoting segments 7 are each hinged to the conductor tip 3d 'of the conductor part 3d. This creates a swivel connection created between access basket 5 and ladder 3.

The ladder part 3d is indicated only schematically in FIG. 2 by a few main spars. A screw spindle 10 is rotatably mounted in its area facing the conductor tip 3d ^{1, which is shown in FIG} . A spindle nut 10a is arranged axially displaceably on the screw spindle 10, which over

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one on her and on the arc-shaped part 7a of the a pivot segment 7 articulated push rodSait dem Sohwenksegment 7 is in operative connection. It can too two push rods 12 may be provided, each with its one end on the spindle nut 10a and with its other Each end is then articulated to one of the two pivot segments 7.

^ i

The electric motor S is only i :. a rotating direction operating J., otor formed and not W coupled asked example with de ::: "gearbox 9 in a suitable DAR. Instead of the electric motor 8 and an internal combustion engine may be employed. The pivotal movement of the trapdoor basket 5 for mitigating the Lei t The inclination ° ir or <** j _T or ° ^ τύύ now proceeds as follows: At a suitable point of the ^ pus park 5, a pendulum switch, gyro switch or a liquid balance 25, serving as a measured value and pulse generator, is arranged and used as a plumb switch Impulse lines (not shown) are connected to the motor 8. This L-measured value transmitter responds to changes in ij

the pus slope O (compared to the horizontal on and converts the respective Iüesswert at the same time into a pulse, which is used as a starting pulse for the motor 8 and as a Sciialtimpuls is fed to the reversing gear 9. Depending on Inwardness of the ladder inclinationΛ; the reverse gear 9 switched in one direction or the other and at the same time the rotor 3 started up. This will make the Screw spiral 10 in rotation in one way or the other Offset direction and correspondingly shifted the spindle nut 10a axially in one or the other seal on her. This displacement is transmitted via the push rod 12

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SAO ORiQINAt

on the pivot segment 7 and pivoted over the holding member 6 the access basket 5 so that its bottom plate 5a always occupies a horizontal position. To the end limit the way of the spindle nut 10a are in a suitable known! Way limit switches 13,14 are provided when making contact make the spindle nut 10a with them a further drive in the same sighting impossible.

Approximately in the area where the rod part, which is in active connection with the pick-up part 6, or the opening of both swivel segments 7 *, a rope 15 is articulated, which is inserted into the upper spar of the ladder part 3d, which is assigned to this swivel segment 7 and is designed as a tube 26 has a clamping plate 28 at its end. Within the tube 26, approximately in the area of its end on the ladder tip side, there is arranged an attachment, designed for example as an annular flange, on which one end of a compression spring 16 is supported, the other end of which is supported against the spam plate 28 of the cable 16, which acts as a pressure plate. The compression spring 16 acting between the parts 27 and 26 acts as a spring accumulator for an additional holding force applied via the cable 15 to the holding device 6, 7 independently of the inclined conductor inclination Ot ₁ or ^ ₁₁ or ^ jjj relative to the horizontal. Even if, due to any circumstances, the drive 8 to 14 of the pivoting device should fail at a time when people are inside the access basket 5, the additional force applied by the spring accumulator 16 by means of the cable 15 would prevent the access basket 5 from pivoting, so that wedged G-efahr is that the people through the front entry opening of the access basket 5 from

209815/0307

- 25 -

fall out of this. This device for applying the additional force independent of the incline of the ladder on the Access basket 5 thus acts as a safety device for this.

The spring accumulator 16 of this safety device is sensitive to whether the entire torque around the point of articulation of the holding device on the conductor tip 3d ¹ over ™

the push rod 12, the spindle nut 10a, the spindle 10 ^ | is supported from the gearbox 9 or _o motor 8, or whether it rests on the spring 16 via the rope 15 °. When the load rests on it, this is compressed by a certain amount in accordance with its spring characteristic, as a result of which the cable 15 undergoes a sliding movement. In order to keep the associated Versehvyenkuiig of the through cage 5 relative to the ladder 3 within certain limits and to block the through cage 5 in its position, between the end of the spring storage 16 facing the through cage 5 and the articulation point Jj of the rope 15 on the holding device 6.7 located end of the ax 15, a contact element may be arranged which f

upon deflection of the spring accumulator 16 with a complementary contact element 30 arranged on the conductor part 3d, for example a limit switch, comes into operative connection and via pulses switched by this part 30, for example designed as a clamping jaw clamping device 29 is actuated, which is arranged in the region of the conductor tip can be and by pinching the rope 15 prevents its further deflection and thus the access basket .5 holds in the position it has once reached. this happens

209815/0307. - 26 -

BAO ORiGtNAi

- ²⁶ - V / Ü8U78

regardless of the size of the load in the access basket 5. Depending on the deflection of aes / ederspeichers 16, blocking pulses for further actuation of the drive 8 to 14 can also be picked up via pulse generators designed and arranged in a suitable manner. By means of suitable switching units for impulse lines or impulse-conducting control circuits, to be selected by a person skilled in the art as required and therefore not described in detail here, the ladder can be acted on the lifting drive 4 and / or the extension drive 3, not shown, in such a way that at When the safety device 7a, 15, 16, 26 to 30 takes effect, further actuation of the lifting drive 4 is blocked until the ladder park is completely retracted with a constant ladder inclination V relative to the horizontal, and then the ladder 3 only by further actuation of the lifting drive 4 can be lowered and finally all ladder drives remain blocked when they reach their storage position 3y until the error in the drive 8 to 14 of the pivoting device for the access basket 5 is eliminated and the actuation of the ladder drives is enabled again by a corresponding release pulse.

The contact 30 is arranged on the conductor part 3 d so that it can be displaced in the direction of the cable axis 15. As a result, a certain deflection path for the cable 15 can be specified as required, taking into account the characteristic curve of the spring accumulator 16, until the clamping device 29 comes into effect by actuating the switch 30 . Accordingly, by appropriate setting, a certain angular range for pivoting the access basket can also be achieved

209815/0307

- 27 -

set against ladder 3, only when it is exceeded the clamping device 29 comes into effect.

When the drive 8 to 14 of the pivoting device for the access cage 5 is working properly, the load located in it or the moment acting through it around the articulation point of the access cage 5 and ladder slot 3d 'assists when the ladder park is raised from its storage position 3y into its maximum Iseigungs- Position 3-r-rj W the rotary actuator 8 to 14. This moment has namely ^

the tendency to use the angle & ~ or / Sj-. or Λτττ between the bottom plate 5a of the Durchstieekorbes 5 and the ladder axis 3 under the effect of reducing the force of gravity. When the ladder 3 is lowered, this angle / ijjj or β -jj has to be increased again to reach the angle Ar (storage position), with the swivel drive 8 to 14 counteracting the moment around the articulation point of swivel segment 7 and 7, which remains unchanged due to the effect of the shear force Ladder part 3d work mui3. Due to the design and arrangement of the safety device 7a, 15, 16, 26 to 30 according to Pigur 2, this now acts as the % when the ladder 3 is lowered

Swivel drive 8 to 14 for the access basket 5 under |

supporting auxiliary drive, namely by the spring accumulator 16 via the rope 15 to the effect of gravity the moment generated in the access basket 5 brings up a counteracting moment. As a result of that the rope 15 is articulated to the holding device 6,7 that it is pivoted on the circular arc-shaped Part 7a of the swivel segment 7 rolls off, the swivel drive 8 to 14 is supported when the ladder is lowered Moment kept relatively constant,

209815/0307

- 28 -

that his attack lever arm is always constant and only the force acting in the rope 15 within small limits according to the characteristic of the spring accumulator 16 can vary.

In the case of the hydraulically acting one shown in FIG The swivel drive for the access basket 5 is based on the illustration of the safety device according to FIG have been omitted for the sake of clarity. The embodiment according to FIG. 3 can, however, just as well that according to FIG. 4 is equipped with a safety device according to FIG. 2 which also acts as an auxiliary drive The embodiments shown in FIGS. 3 and 4 can also be between the transducer 6 of the Have holding device and the ladder part 3d arranged pivot segment 7 according to Figure 2, on its representation in the Fi ures 3 and 4 has been omitted to a particularly simple swivel drive construction to represent.

In Figure 3 is in each case with a schematic representation 31 an oil tank, 21 an electric motor, 22 a hydraulic pump, with 25 a reusable slide, with 24 a hose connection, with 17 a hydraulic cylinder and with 18 denotes the piston rod. Oil tank 31, electric motor 21, hydraulic pump 22, multi-way slide 25 and hydraulic cylinder 17 are stored in any known manner on the ladder «part 3d. The sensor 6 for the access basket is directly linked to the ladder section 3d. The hydraulic cylinder 17 is at one end on the bottom rail of the Iieitteils 3d articulated, and its piston rod is on

209815/0307 - 29 -

Pick-up 6 hinged above its articulation on ^ eitteil 3d. The control pulses, which are relayed by the combined measured value and pulse generator 23 (FIG. 1) via the pulse-conducting control circuit (not shown) and are dependent on the change in the conductor inclination Oij or ⁰ ^ Jj or ^ -rrr, are suitably the same as in the ^{exemplary embodiment according to I 1} IgUr 3 only unidirectional rotating electric motor and φ

at the same time, for example, as a solenoid-operated M

Control slide formed multi-way slide 25 supplied and control the start-up of the electric motor 21 as well as the Reusable slide 25 in such a way that, depending on the change in the slope GL · or fltrr or ötrr, the floor platform in each case 5a of the access basket 5 is held in a horizontal position.

The embodiment of Figure 4 differs from the embodiment according to Figure 3 only in that the hydraulic cylinder 19 on the upper spar of the ladder part 3d and its piston rod 20 on the transducer 6 for the diameter ||

rose basket 5 on its articulation on |

Head part 3d is hinged to this remote part. Furthermore, the electric motor 21 of the exemplary embodiment according to FIG. 4 is designed as an electric motor running in two directions of rotation, which is coupled to the hydraulic pump 22. Characterized is used in the embodiment according to Figure 4 of the multi-slider 25 according to FIG 3 in F _or tfall, since the electric motor is switched directly from one into the other direction of rotation by the products supplied by the combined measured value and pulse generator 23 (Figure 1) pulses.

- 30 209815/0307

- 30 - 1VÜ8U78

In Figure 5, the turntable ladder according to the invention is shown in the transport position. In this, the access basket 5 is brought into its transport position 5 _Q , in which it is folded forward by about 90 ° _{compared to its position 5_ corresponding to the storage position 3 T of the ladder park 3.} This is done by the fact that after reaching the deposit position 3j the ladder 3 is switched by a suitable not shown, in the control circuit for the φ pivoting of the access basket 5 arranged pulse generator or switch of the drive 8 to 14 of the pivoting device so that it is dependent of a further start-up pulse is actuated independently of a change in the ^ eiterneigungoij or Ui ₁₁ or OL ₁₁ in the sense that the actuation for depending on the i'eiterneigungOt-p or ° * _ττ or ° ^ r _TT in the case of dependency -

_L -L JL JL JL JL

circuit corresponds to actuation taking place. By appropriately designed and arranged limit switches can the rotary actuator 8 to 14 when reaching the

^ Transport position 5 _{Q of} the access basket 5 is switched off and an additional locking or locking device

W device, through which the access basket 5 is fixed _{in its transport position 5 Q.}

The control circuit for the swivel device can work with electrical, mechanical or hydraulic energy. Its individual measured value and pulse generator elements are accordingly as well as switches and other control and impulse transmission elements according to the type of energy selected to train.

- 31 209815/0307

The access basket 5 is designed so that it can be used when necessary also from the JJeiterpsr ^ ·: approved and in a suitable place of the chassis, for example in the free space between Iuaimsclic, ftshaus and turret 2 v / earth 3: & nn.

209815/0307

BATH ORIGINAL

Claims (22)

1.) Mobile, in particular self-propelled and / or motor-driven, turntable ladder with an access basket arranged on the top of the ladder for receiving people, characterized in that the access basket (5) is ^{held in such a way on the ladder tip (3d f} ) by means of a holding device (6,7) is that, depending on the angle of incidence f \ E, ^ EI, III) of the ladder (3) relative to the horizontal by applying an additional constraining force, it can be pivoted so that its bottom or Step platform (5a) always assumes a horizontal position. 2.) Turntable ladder according to claim 1, characterized in that a swiveling device (8 to 16 or 17, 18 or 19 to 22) in V / irk connection with the holding device (6,7) is provided, the actuation of which depends on the pivoting movement of the ladder (3) in the vertical direction Dresdner Bank AG bank account. Frankfurt am Main No. 2βο «ο Postal checking account no. Aes56O Frankfurt 209815/0307 management takes place. 3) Turntable ladder according to claim 2, characterized gekennze chnet i _T that said pivot means (8 to 16 or 19 to 22 bzw.17,18) an independent, operable in two directions drive (8.9 bzw.21,22) , which via a control device (23) by means of the change in the angular ^ position ^ VT, II, III) of the conductors (3) relative to the φ horizontal derived pulses can be actuated so that M it via a transmission device (7a, 10 to 12 or 18 or 20) drives the access basket (5) to maintain the horizontal position. 4.) Turntable ladder according to claim 3, characterized in that the drive (8, 9 or 21, 22) of the pivoting device (8 to 16 or 17, 18, 21, 22 or 19 to 22) is itself in the horizontal position the bottom platform (5a) of the through-pan (5) is designed to be fixed in the corresponding position. 5.) Turntable ladder according to claim 3 or 4, characterized in that that the drive of the swivel device (8 to 16) as " Via a mechanical power transmission device (7a, 10 to 12) on the access basket (5) acting motor (8) is formed. 6.) Turntable ladder according to claim 4 or 5, characterized in that the mechanical power transmission device is designed as an operatively connected screw spindle (10) with the motor (8), on which one via at least one push rod (12) on a transducer (6, 7) for the access basket (5) articulated spindle nut (10a) axially 209815/0307 ■ - 3 - is slidably guided. 7.) turntable ladder according to claim 6, characterized in that the motor (8) is designed as an electric motor which can be actuated in one of two directions of rotation depending on the change in inclination of the ladder (3). 8.) Turntable ladder according to claim 6, characterized in that the motor (8) is designed as a motor which can be actuated in one direction of rotation and is coupled to the screw spindle (10) via a reversing gear (9) which, depending on the change in inclination of the ladder ( 3) is switchable. 9.) Turntable ladder according to claim 3 or 4, characterized in that the drive (21, 22) of the pivoting device (17, 19, 21, 22 or 19 to 22) as a hydraulic power transmission device (17, 18 or 19, 20) is designed to act on the access basket motor. 10.) turntable ladder according to claim 9, characterized in that a hydraulic pump (22) is provided whose directly coupled motor (21) can be actuated in one of two directions of rotation depending on the change in inclination of the ladder (3). 11.) Turntable ladder according to claim 9, characterized in that the hydraulic power transmission device (17, 18 or 19, 20) has a multi-way slide (25), preferably a solenoid-operated control slide, which, depending on the change in inclination of the ladder (3) is actuatable. 12.) Turntable ladder according to one of claims 3 to 11, characterized 209815/0307 ¹ ! J * ¹ -? ■ * - characterized in that the control device (23) has a measuring transducer which responds to the respective change in inclination of the ladder (3) and a pulse transducer which converts the measured value into pulses and which drives the drive (8, 9 or 21, 22) of the pivoting device (8 to 16 or 17, 18, 21, 22 or «, 19 to 22) are supplied as control pulses. 13.) turntable ladder according to claim 12, characterized in that as a measured value and pulse generator act as a plumb switch φ the pendulum switch, gyro switch or a liquid balance A are provided. 14.) Turntable ladder according to any one of the preceding claims, characterized in that in addition a non-angle of attack (* I, * EI, ⁰ ^ II) of the conductor (3) relative to the horizontal dependent means (7a, 15,16, their effectiveness 26 to 28) is provided as a safeguard in the event of the complete or partial failure of the swivel device (8 to 16 or 17, 18, 21, 22 or 19 to 22), which in the event of such a failure of the swivel device (8 to 16 or 17, 18, 21, 22 or 19 to 22) prevents the access basket (5) from pivoting in relation to the ladder (3). f 15.) Turntable ladder according to claim 14, characterized in that the securing device (7a, 15,16,26 to 28) as the drive (8,9 or 21,22) of the pivoting device (8 to 16 or 17,18, 21,22 or 19 to 22) in the sense of its actuation in the direction of reducing the inclination C ^ I, II, III) the ladder (3) corresponding pivoting of the floor platform (5a) of the access basket (5) supporting Auxiliary drive is formed. 16.) turntable ladder according to claim 14 or 15, characterized gekennzeichnei 209815 / Π307 1708073 that the safety device as loaded via an energy storage device (16, 26 to 28), on the access basket (5) articulated push or pull member (15) is formed. 17.) Turntable ladder according to claim 16, characterized in that the securing device (7a, 15,16,26 to 28) as a tension member is a via an energy storage device (16,26 to 28), preferably a spring accumulator, on train loaded rope (15) which is guided in the area of its hinged on the access basket (5) to keep the force acting in the rope (15) constant via a circular arc path (7a) of a pivoting segment (7) of the holding device (6,7). 18.) Turntable ladder according to one of claims 14 to 17, characterized in that a device (29,30) is additionally provided which, when a predetermined one is reached, preferably adjustable, not depending on a change in the inclination (· Ί, * II, 'rCII) the ladder (3) changing the angle (rl, (Ί.Ι _f fi.II) between the floor platform (5a) of the access basket (5) and the ladder axis (3) the swiveling device (8 to 16 or 17, 18,21,22 or 19 to 22) and / or the safety device (7a, 15,16,26 to 28) blocked. 19.) turntable ladder according to claim 18, characterized in that an actuation of the drive (8,9 or 21,22) of the pivoting end / or device (8 to 16 or 17, 18, 21, 22 or 19 to 22) * one Actuation of the safety device (7a, 15, 16, 26 to 28) clamping members blocking depending on the impulses given by preferably adjustable limit switches (30) (29) or switches are provided. 209815/0 3 07 20.) Turntable ladder according to one of the preceding claims, characterized in that the access basket (5) ^{is articulated on the ladder tip (3d 1} ) such that its bottom platform (5a) has a position approximately at the level of the last ladder rung. 21.) Turntable ladder in particular according to one of the preceding claims, characterized in that the holding device direction (6,7) is designed so that by it at äk horizontal (^ I) placed ladder (3) the access basket (5) in a position other than this ladder position (31) speaking position, preferably in its position (51) corresponding to this ladder position (31) by about 90 ° in the sense of its intended for maximum ladder inclination (III) relative to the horizontal Ladder st411ung (3III) corresponding position (5HI) folded position (5a), is durable. 22.) turntable ladder according to claim 21, characterized in that the pivoting device (8 to 16 or 17,18,21,22 or 19 to 22) is designed so that after reaching S. that corresponds to the horizontal (I) ladder position (31) corresponding position (51) of the access basket (5) when loading | may be switched and operated so that it is the holding device (6,7) brings into a position in which the access basket (5) one of these divisions (31) non-corresponding position, preferably a position corresponding to this ladder position (31) in relation to its position (51) by about 90 ° in the sense of its intended for maximum ladder inclination (III) relative to the horizontal Ladder position (3III) corresponding position (5IH) assumes the folded position. 209815/0307 T _{3 + 4} . Patent attorney y \ i ^ wvvvvp ** Blank page