EP0671303A1 - Cable guide for a ropeway, especially ropeway with endless loop - Google Patents

Abstract

The rope guide is for a rope way, partic. a circulating rope way, with two conveyor ropes (1_I,1_II,2_I,2_II) in the area of the conveyor track (F) next to one another and parallel-guided at the same height for forming a peak (1) and a valley (2) track of the same track width for the coupled vehicle (3). Two driven drive wheels (41, 42) are provided at the drive station (B) and at least two trailed deflector wheels (5) at the deflector station (T). Inner and outer diversion wheels (6, 7) are provided at both stations which feed the four parallel-arranged conveyor ropes to the deflector wheels height-displaced in angled planes.

Description

The invention relates to a cable guide for a cable car, in particular a circulating cable car, with two parallel conveyor cables running parallel to each other at the same height in the region of the conveyor line to form a mountain or valley track with the same track width for the coupled vehicles, which consist of a single, self-contained and by deflections to form an inner and an outer rope loop once crossed conveyor rope, which have the same sense of rotation when the rope crossing point is included, with two driven deflection wheels at the drive station and with at least two towed deflection wheels at the deflection station, and with inner and outer deflection wheels on both Stations that feed the four parallel-guided hoisting ropes to the deflection wheels in angled planes at different heights, or remove them from them, the associated deflection wheels at the drive or deflection station to form the same tensile forces in the vie r Conveyor ropes are anchored.

In order to give the ropeway vehicles coupled to conveyor ropes an improved stability against cross wind, there are rope guides in the ropeway construction with two conveyor ropes parallel to each other at the same height in the area of the conveyor line to form a wide mountain or valley track that is roughly the width of the Vehicles corresponds. Various rope guides are known in this context:

A cable guide known as QMC (Quad Mono Cable) has four individual, self-contained conveyor cables, each of which forms a cable loop. Each rope loop is deflected at the valley and at the mountain station with a deflection wheel; all deflection wheels have roughly horizontally mounted axes of rotation. On each pair of ropes, the rope sections running in the same direction form a train strand, to which the vehicles for ascent or descent are coupled on both sides; The empty strand of each rope loop is braced in the four conveyor cables to create the same tensile forces.

The four deflection wheels of a station are driven in pairs in opposite directions via a reversing gear, cf. US-Z: Ski Area Management, May 1988, p.102 and 103, continued on p.129. They can also be driven in the same direction and synchronized by means of a control device in pairs in synchronism in the pair of rope loops that belong together by crossing the conveyor cables with deflection wheels on the two pairs of rope loops running in opposite directions, cf. EP 285 516 A2. In emergency operation, the rope pulley diameters on the drive wheels can be mechanically adjusted.

From EP 93 680 B1 it is known to provide two individual self-contained conveyor ropes, each of which forms a rope loop; the deflection wheels at the top or bottom station can be laterally offset (Fig. 16 and 17) or coaxially arranged (Fig. 15) to form the inner and the outer rope loop with the same sense of rotation, the side by side in the area of the conveyor line same height parallel ropes to form the mountain or valley track the same track width for the coupled vehicles are formed by deflections. The two driven idler wheels have independent drives and are synchronized to the same rope conveying speed in the two rope loops.

A cable guide with two individual, each self-contained conveyor cables for forming the inner and outer rope loop is further known from EP 399 919 B1. Two driven deflection wheels offset laterally from one another are provided at the drive station and two towed deflection wheels offset laterally offset from one another are provided at the deflection station. Four deflection wheels at each of the two stations lead the four conveyor cables parallel to each other at the same height in the area of the conveyor line to and from the deflection wheels in levels angled with respect to the coupling points at different altitudes. In order to form two rope loops, each with two synchronous areas for the mountain or valley track, in this known rope guide, the two, each self-contained conveyor ropes, both at the drive station and at the deflection station are crossed once, for which the two deflection wheels of the inner rope loop are inclined at both stations in order to change the grooves on the deflection wheels, forming the rope crossing point. The two driven deflection wheels in turn have drives that are independent of one another and are synchronized to the same rope conveying speed in the two rope loops.

In the case of the aforementioned rope guides with two or even four individual, self-contained conveyor ropes, which form the inner and the outer rope loop, the control as a whole is quite complex. First of all, each individual conveyor rope has to be tensioned by itself so that the same tensile forces are present in the individual rope pairs of each rope loop; However, the rope pairs of different rope loops must then also be monitored for the same tensile force and, if necessary, adjusted to one another (see e.g. EP 93 680 B1, Fig. 16 and 17). To synchronize the rope conveying speed in the two rope loops to exact synchronism, a control device is required, to which the rope conveying speed measured in each rope loop is fed as input signals, after which it compares the speed of the associated drive motor.

A cable guide with the generic features mentioned above is known from DE 37 12 941 C2. The two rope loops are formed from a single, self-contained conveyor rope that is crossed once to the inner and outer rope loop in the same direction of rotation. A pair of coaxially mounted deflection wheels is provided at each of the top and bottom stations, which deflect the hoisting ropes of the two rope loops, which are parallel to one another at the same height in the area of the conveying line, and offset in height at levels angled with respect to the coupling points. The conveying ropes of the inner rope loop can run directly into the associated grooves on the deflection wheels, however the rope areas of the outer rope loop must be deflected laterally from their position one above the other in the deflection area, in order to form two identical tracks between the inner and the outer rope loop, for which purpose four Additional deflection wheels are required, one on each of the deflection wheels on the inlet and outlet side.

Furthermore, according to DE 37 12 941 C2, the two driven deflection wheels are directly coupled for common rotation or replaced by a single pulley with two running grooves; there is therefore only one drive for both rope loops. Since the effective diameters on the two grooves of the drive wheel already differ from one another due to manufacturing tolerances and also because of the frictional engagement between the conveyor cable and the drive wheel on the groove, the effective diameters on the drive wheels never match exactly, which is why the rope conveying speeds in the two rope loops are slightly different deviate and due to the feedback via the crossed conveyor cable on the drive wheel, increased friction and thus increased wear occurs, which can lead to the formation of friction vibrations, combined with undesirable noises, which are transmitted to the vehicles via the conveyor cable.

The invention is therefore based on the object of simplifying the cable guidance in such a double conveyor cable car with a single conveyor cable once crossed to form two cable loops and to ensure exactly the same cable conveying speeds in the two cable loops.

According to the invention this object is achieved with the features that the two drive wheels are arranged laterally offset from one another, that the two inner deflection wheels at the drive station for forming the rope crossing point and for changing the grooves on the drive wheels are inclined, that the first of the towed deflection wheels and the tension the inner rope sling of the two inclined deflection wheels, that either two further, laterally offset and symmetrically arranged to the first towed deflection wheel towed deflection wheels, or a correspondingly large, symmetrically arranged to the first towed deflection wheel, second towed deflection wheel and the two drive wheels tension the outer rope loop, and that the two drive wheels with a main machine and with one Auxiliary machine driven independently of one another and synchronized to the same rope conveying speed in the two rope loops.

Due to the lateral displacement of the two drive wheels in connection with the lateral displacement of the two towed deflection wheels or the correspondingly larger individual deflection wheel, the upward or downward conveying rope of the outer rope loop can run directly into the associated groove on the respective deflection wheel in the rope guide according to the invention leak out of it. In the invention, the inner rope loop is formed by the first dragged deflection wheel, which is arranged symmetrically in the center for this purpose, and the two inclined deflection wheels, which cross the conveyor cables once in mutually offset planes and change the grooves on the drive wheels.

Compared to the rope guide (DE 37 12 941 C2) mentioned in the introduction, four deflection wheels can be saved in the invention, of the four deflection wheels required at the two deflection areas, only the two deflection wheels of the inner rope loop assigned to the drive wheels for crossing the conveyor rope and for changing the grooves on the drive wheels are to be inclined.

For the required exact synchronization of the conveyor ropes in the two rope loops in the invention is provided in a manner known per se by synchronizing the two independently driven deflection wheels, but due to the feedback of the two rope loops in the once crossed conveyor rope on the drive wheels compared to the known rope guides Two (EP 93 680 B1) or four (EP 285 516 A2) individual conveyor ropes result in significant simplifications in the control:

So it is possible with the invention to drive the two drive motors as the main and secondary machine according to the master-slave principle. The armature current of the main machine is measured and a cf. simple control device supplied as an input signal, which adjusts the armature current of the auxiliary machine to that of the main machine. A Measurement of the rope conveying speed and direct measurement and monitoring of the same tensile forces in pairs in the conveyor ropes of the two rope loops is not necessary, since in the invention there is a clear situation with regard to the rope tensions due to the common bracing of all deflection wheels at the deflection station; all four hoisting ropes always have the same tractive force, which leads to uniform conditions on the drive.

In the invention, both reduction gears of the main or secondary machine are advantageously rotatably connected to one another via a differential gear, preferably epicyclic differential gear. The freely rotatable part of the differential gear can be designed to be drivable in order to correct the differential diameters on the drive wheels for the synchronism of the conveyor cables.

When braking, the two drive wheels are braked to a standstill with friction brakes; at the same time, according to the invention, the freely rotatable part of the differential gear is braked and held in place with a parking brake until the conveyor cables come to a standstill, as a result of which the main drive is non-rotatably coupled and thus inevitably connected. As a result, the two drive wheels are coupled to rotate together when braking and can therefore be braked together to a standstill, regardless of the instantaneous coefficient of friction on the friction pairings of the two friction brakes. In the case of braking, an exact mechanical adjustment of the rope pulley diameter can be dispensed with in the invention.

In emergency operation, ie in the event of a malfunction in the drive units, the passengers on the conveyor line must cf. slow driving speed can still be brought to the stops. For this purpose, a hydraulic auxiliary drive is provided in the invention:
Sprockets are attached to the two drive wheels, with which pinions driven by a hydraulic motor can be coupled and a control device monitors an auxiliary drive machine and ensures the exact synchronization of the conveyor cables.

In the invention, the drive station can be the top or bottom station; the deflection station is the other station. The drive wheels can be braced together with the drive motors and reduction gears belonging to them; the towed deflection wheels are preferably braced.

On a cable car with the cable guide according to the invention, two vehicles can run in shuttle mode on the conveyor line.

To form a circulating ropeway, the vehicles are uncoupled from the two conveyor ropes of the mountain or valley track at the stop stations and conveyed on a station track to the other track at low speed, at which the passengers can comfortably leave or board the vehicles, and there , accelerated to the conveyor speed of the two conveyor ropes, coupled again.

Since with the rope guide according to the invention the deflection of the once crossed rope to two rope loops take place in planes angled with respect to the coupling points at the holding stations, siding can advantageously be arranged at the mountain station and at the valley station between the mountain track and the valley track, on which the from the conveyor cable Have the uncoupled vehicles parked via a turnout inserted into the station track of the cable car. The number of vehicles in circulation can thus be easily adapted to the current demand for transport capacity of the cable car. The length of the siding can be dimensioned taking into account the capacity of the station tracks for the garage of all vehicles of the cable car.

Fig.1a

zeigt eine erste Ausführungsform der Seilführung nach der Erfindung in einer schematischen Draufsicht, bei der die Abspannung an den geschleppten Umlenkrädern in die Zeichenebene geklappt dargestellt ist, und

Fig.1b

ist eine mögliche Variante nach der Erfindung in der Darstellung wie in Fig.1a.

Fig.2

zeigt die erfindungsgemäße Variante nach Fig.la in einer Perspektive.

Fig.3a

zeigt eine Ansicht längs der Linie IIIa - IIIa in Fig.1a oder b auf das die beiden Untersetzungsgetriebe verbindende Umlaufräder-Differentialgetriebe,

Fig.3b

ist ein Schnitt durch das Umlaufräderdifferential längs der Linie IIIb - IIIb in Fig.3c und

Fig.3c

zeigt die Anordnung der Räder des Umlaufräderdifferentials in einer Seitenansicht.

Fig.4

zeigt den hydraulischen Hilfsantrieb für den Notbetrieb. Schließlich ist in

Fig.5

noch eine Draufsicht auf das Stationsgleis an einer Haltestation einer Umlaufseilbahn dargestellt.

Exemplary embodiments according to the invention are explained in more detail below with reference to the drawing:

Fig.1a

shows a first embodiment of the cable guide according to the invention in a schematic plan view, in which the guying on the towed deflection wheels is shown folded in the plane of the drawing, and

Fig.1b

is a possible variant according to the invention in the representation as in Fig.1a.

Fig. 2

shows the variant according to the invention according to Fig.la in one perspective.

Fig.3a

shows a view along the line IIIa - IIIa in Fig.1a or b of the epicyclic gear differential connecting the two reduction gears,

Fig.3b

is a section through the planetary gear differential along the line IIIb - IIIb in Fig.3c and

Fig.3c

shows the arrangement of the wheels of the planetary gear differential in a side view.

Fig. 4

shows the hydraulic auxiliary drive for emergency operation. Finally in

Fig. 5

shown a top view of the station track at a station of a cable car.

In the schematic illustration according to FIG. 1a , the valley station T of a cable car is the drive station. There are two driven deflection wheels 4₁, 4₂, hereinafter referred to briefly as drive wheels 4₁ or 4₂, laterally offset next to one another in the cable conveying direction and fixed in position, which are driven independently of one another in the same direction by separate electric drive motors 8₁ and 8₂ via reduction gears 9₁ and 9₂ . At the top station B, which is the deflection station, three towed deflection wheels 5₁, 5₂, 5₃, hereinafter referred to as deflection wheels 5₁ or 5₂ or 5₃, are also rotatably mounted laterally offset side by side, their bearings are over (in detail (not shown) Weights braced together, alternatively a hydraulic clamping system is also conceivable; the guy shown schematically is designated A.

The drive wheels 4₁, 4₂ span with the deflection wheels 5₁, 5₂, 5₃ to a single, self-contained conveyor rope, which to form two loops I, II and to change the grooves on the Drive wheels 4₁, 4₂ with correspondingly inclined deflection wheels 6₁, 6₂ is crossed once; the rope crossing point arranged centrally in the top view is designated by X. Including the rope crossing point X, the inner rope loop I has the same sense of rotation as the outer rope loop II.

The inner rope loop I is spanned by the middle deflection wheel 5 1 at the mountain station B and the two inclined deflection wheels 6 1 and 6 2, which feeds the crossed conveyor rope in offset levels of the higher groove on a drive wheel 4 1 or it from the lower groove on the other Drive wheel 4₂ leads away. The outer rope loop II is spanned by the two mutually laterally and the first deflecting wheel 5 ₁ symmetrically offset deflection wheels 5₂, 5₃ at the mountain station B and the two drive wheels 4₁, 4₂ at the valley station T, which are accordingly offset in the lateral direction for this purpose.

The two rope deflections at the top station B and at the bottom station T take place in a plane angled with respect to the conveying route F. For this purpose, further deflection wheels 7 are mounted horizontally at the mountain station B on the four conveyor cables; at the valley station T two more, on horizontal axes of rotation deflection wheels 7 are sufficient, which in conjunction with the two inclined deflection wheels 6₁ and 6₂ ensure the deflection of the deflection area at the valley station T. The deflecting the inner rope loop I first deflecting wheel 5₁ is offset in height relative to the two deflecting wheels 5₂, 5₃ deflecting the outer rope loop II; Likewise, the two drive wheels 4₁, 4₂ with their grooves offset in height from each other (V). For this purpose, corresponding height displacements V are provided in the conveying direction between the bearings of the respective deflecting wheels at the beginning or end of the conveying path F.

The synchronous areas of both rope loops I, II are guided parallel to one another at the same height within the conveyor path F at a distance of the track width S and accommodate vehicles 3 coupled to them. The two uphill ropes of the inner I and the outer rope loop II are included 1 _I and 1 _II respectively and form the mountain trail 1; Analogously, the valley track II is formed by the cable regions 2 _I and 2 _{II of} the two cable loops I, II leading down the valley.

For the exact synchronization of the conveyor cable is ensured by synchronization of the speed of the two independently driven drive wheels 4₁, 4₂. One drive motor 8 1 is operated as the main machine and the other drive motor 8 2 is operated as a secondary machine according to the master-slave principle. The armature current of the main machine 8 1 is measured and forms the input signal for a control device 11, which adjusts the armature current of the secondary machine 8 2 to that of the main machine 8 1. The reduction gear 9 1 of the main machine 8 1 and the reduction gear 9 2 of the auxiliary machine 8 2 are connected to one another via a schematically illustrated differential gear 10.

In the variant shown in Fig.1b , the two mutually laterally offset and symmetrically arranged to the first deflection wheel 5₁ deflection wheels 5₂, 5₃ according to Fig.1a by a large and coaxially (or symmetrically) to the first towed deflection wheel 5₁ arranged second deflection wheel 5₂, the latter Diameter determines the width of the outer rope loop II. Instead of the two inclined deflection wheels 6₁, 6₂ in Fig.1a, a set of inclined deflection rollers 6₁ ', 6₂' are provided in Fig.1b. Otherwise, the representations in FIG. 1b agree with the above statements.

The embodiment according to Fig.1a is shown in perspective in Fig.2 . In the area of the conveyor section F, i.e. between the deflection wheels 6, 7 at each stop B, T, the four parallel, parallel, parallel conveying ropes 1 _I , 1 _II or 2 _I , 2 _{II are carried} by support rollers 12 (not shown) ) Supports adapted to the conditions of the existing gradient. To form a circulating cable car, horizontally guided coupling points 13 are provided at the ends of the conveyor line F, that is to say at the mountain B and valley station T, at which the vehicles are suspended from the conveyor cables at low speed on a (not shown in FIG. 2) Station track on which the Passengers get in and out, are led to the other lane, accelerated there again to the cable conveying speed and attached to the two conveyor cables. The four deflection wheels 6, 7 at the mountain station B and at the valley station T, with their displacements V, explained in more detail with reference to FIG. 1a, guide the deflection areas U _T at the valley station T and / or at an angle to the coupling points 13. U _B at the Berstation B, in which the two rope loops I, II the drive wheels 4₁, 4₂ or deflection wheels 5₁, 5₂, 5₃ are supplied at different heights or removed from them; six deflection wheels 7 are mounted approximately horizontally, the two middle deflection wheels 6₁, 6₂ at the drive station are inclined to change the grooves on the drive wheels 4₁, 4₂ to form the rope crossing point X. The deflection area U _T at the valley station T is offset at an oblique angle with respect to the adjacent coupling point 12; the deflection wheels 5 in the deflection area U _B at the top station B are suspended vertically at A (not shown).

The two reduction gear 9₁, 9₂ have according to Fig.3a PTO shafts 9₁₁ and 9₂₁, which are each connected via cardan shafts to the two inputs 10₁ or 10 insgesamt of the planetary gear differential gear designated overall with 10. The planetary gear differential 10 has three coaxially rotatably mounted parts according to Fi g .3b , namely the central wheels 10 1 and 10₅ arranged on its two input shafts and a planet gear carrier 10₆ as a web. On the planet gear carrier 10 drei, three planet gears 10₂, 10₃, 10 angeordnet are rotatably arranged on shafts which mesh with one another or with the two central gears 10₁ or 10₅; a brake disc 10₇ is rotatably connected to the planet carrier 10₆. The engagement of the wheels 10₁ to 10₅ of the planetary gear differential 10 is shown in detail in Fig.3c : Accordingly, the one central gear 10₁ meshes with the planet gear 10₂. The two planet gears 10₂ and 10₃ are rotatably arranged on the same shaft. The planet gear 10₃ is in engagement with the planet gear 10₄, which meshes with the other central gear 10₅.

At exactly the same speeds on the two drive wheels 4₁, 4₂, the planet carrier 10₆ together with the brake disc 10₇ stands still; at small speed deviations on the two drive wheels 4₁, 4₂ it begins to rotate in one or the other direction. On the brake disk 10₇ of the planetary gear differential 10 rotating with the planetary gear carrier 10₆, an application device 10₈ is arranged fixed to the frame according to FIG.

In the event of braking, the two drive wheels 4 1, 4 2 are braked to a standstill with friction brakes (not shown). At the same time, the parking brake 10₇-10₈ is actuated, which holds the planet carrier 10₆ as a web of the planetary gear differential 10, which leads to a non-rotatable connection, thus for the same speed on the two drive wheels 4₁, 4₂, regardless of the current coefficient of friction on the friction pairings of the two Friction brakes. The four conveyor cables 1 _I , 1 _II and 2 _I , 2 _II can be delayed together until they come to a standstill.

For emergency operation, i.e. in the event of any malfunction in the two drive trains 8₁-9₁-4₁ or 8₂-9₂-4₂, these can be uncoupled from the drive wheels 4₁, 4₂. According to FIG. 4, a hydraulic auxiliary drive, designated overall by 14, is provided:

A diesel engine 14₁ drives on an oil pump 14₂, which is connected via hydraulic lines 14₃₁, 14₃₂ to two hydraulic motors 14₄₁ and 14₄₂. On both drive wheels 4₁, 4₂, sprockets 14₆₁ or 14₆₂ are coaxially attached, with each of which an engaging and disengaging and driven by the associated hydraulic motor 14₄₁ or 14₄₂ driven pinion 14₅₁ or 14₅₂ can be brought into engagement. A control device 4₇ ensures the synchronism of the conveyor cables 1 _I , 1 _II or 2 _I , 2 _II . A path measuring device (not shown) measuring the cable routes serves as input signals for the control device 4₇; one touch roller on the rope is sufficient for this. Alternatively, master-slave operation is of course also possible on the preloaded system.

5 shows the station track of the mountain station B of a circulating cable car, denoted overall by 15, in a plan view. The vehicles 3 uncoupled from the two incoming conveyor cables 1 _I , 1 _{II of} the mountain track 1 at the coupling point 13 are brought to slow conveying speed in the region of running tracks 19 and on a track track 18 in an arc led to the valley track 2, the passengers leaving or boarding the vehicles 3. Once there, they are accelerated again to the cable conveying speed in the region of the running tracks 19 on the valley track 2 and attached to the two outgoing conveyor cables 2 _I , 2 _{II of} the valley track 2 in the area of the coupling point 13.

In the free space between the mountain track 1 and the valley track 2, a siding 16 is set up and a turnout 17 is built into the curved track 18, so that the vehicle 3 located on the turnout 17 can be parked in the siding 16 by pivoting the turnout 17.

Reference list

Claims (7)

Rope guide for a ropeway, in particular a circulating ropeway, each with two parallel co-operating ropes (1 _I , 1 _II or 2 _I , 2 _II ) parallel to each other in the area of the conveyor line (F) to form a mountain (1) or Valley track (2) of the same track width (S) for the coupled vehicles (3), which are formed from a single, self-contained and crossed by deflections to an inner (I) and an outer loop (II) (at X) conveyor cable which have the same sense of rotation when the rope crossing point (X) is included,
with two driven deflection wheels (drive wheels 4₁, 4₂) at the drive station (B) and
with at least two towed deflection wheels (5) at the deflection station (T), and
with inner and outer deflection wheels (6 and 7) at both stations (B, T), which feed the four parallel conveyor ropes (1 _I , 1 _II and 2 _I , 2 _II ) to the deflection wheels (4, 5) offset in height at angled levels or lead away from them, the associated deflection wheels (4 or 5) of the drive station (T) or the deflection station (B) being braced to form the same tensile forces in the four conveyor cables (1 _I , 1 _II 2 _I , 2 _II ) ( Guy A),
characterized,
that the two drive wheels (4₁, 4₂) are laterally offset from each other,
that the two inner deflection wheels (6₁, 6₂) at the drive station (T) to form the rope crossing point (X) and to change the grooves on the drive wheels (4₁, 4₂) are inclined,
that the first of the towed deflection wheels (5₁) and the two inclined deflection wheels (6₁, 6₂) span the inner rope loop (I),
that either two further, laterally offset and symmetrically to the first towed deflection wheel (5₁) arranged towed deflection wheels (5₂, 5₃) or a correspondingly large, symmetrically arranged to the first towed deflection wheel (5₁) second towed deflection wheel (5₂) and the two drive wheels (4₁, 4₂) stretch the outer rope loop (II), and that the two drive wheels (4₁, 4₂) with a main machine (8₁) and with a secondary machine (8₂) are driven independently of each other and to the same rope conveying speed in the two rope loops (I, II) be synchronized. Rope guide according to claim 1, characterized in
that the synchronization of the cable conveying speed in the two rope loops (I, II) the armature current of the main machine (8₁) is measured and by means of a control device (11) the armature current of the secondary machine (8₂) is adjusted to it. Rope guide according to claim 1 or 2, characterized in that
that both reduction gears (9₁, 9₂) of the main (8₁) or secondary machine (8₂) via a differential gear (10), preferably epicyclic differential gear, are rotatably connected. Rope guide according to claim 3, characterized in
that the freely rotatable part (10₇) of the differential gear (10) can be driven in order to correct the differential diameter on the drive wheels (4₁, 4₂) with respect to the exact synchronism of the conveyor cables (1 _I , 1 _II , 2 _I , 2 _II ). Rope guide according to claim 3, characterized in
that the freely rotatable part (10₇) of the differential gear (10) can be braked when braking with a parking brake (10₇-10₈), whereby the main drive (8₁-9₁) with the auxiliary drive (8₂-9₂) is rotatably coupled. Rope guide according to one of claims 1 to 5,
characterized,
that a hydraulic auxiliary drive (14) is provided for emergency operation with
attached to the drive wheels (4₁, 4₂)
Sprockets (14₆₁, 14₆₂), with these couplable, each of a hydraulic motor (14₄₁ or 14₄₂) driven pinions (14₅₁, 14₅₂) and with one of a control device (14₇) monitored Auxiliary drive machine (14₁) for synchronizing the synchronism of the conveyor cables (1 _I , 1 _II and 2 _I , 2 _II ). Rope guide for a circulating ropeway according to one of claims 1 to 6, characterized in that
that siding tracks (16) are set up at the mountain station (B) and at the valley station (T) between the mountain track (1) and the valley track (2), on which the vehicles (3) uncoupled from the haul rope are connected to the station track ( 15) Park the rotating switch (17) inserted in the cable car.

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