EP2456707B1 - Drive system for a passenger transport installation - Google Patents

Description

The invention relates to a drive system for means of transport of a passenger conveyor system, in particular an escalator or a moving walkway, according to the generic part of the first claim.

The DE 25 41 397 discloses a arranged within a revolving step belt of escalators, consisting of electric motor, transmission and handrail drive unit, wherein the drive shaft of the transmission also serves as the main drive shaft of the step band.

Of the DE 35 26 905 C2 is to remove a drive for escalators and moving walkways in the reverse area, disposed within the revolving stage or pallet band, with electric motor, gear stages and handrail drive means and between the stage or pallet drive shaft and the handrail drive shaft, wherein the transmission output gear in direct engagement with the step or pallet drive shaft gear is provided. At least one electric motor with planetary gear is provided as a center axis-like drive unit axis parallel to the step or pallet drive shaft and the handrail drive shaft.

The DE 24 21 729 C3 discloses a drive for overlong escalators and moving walkways with paired drive motors, transmission gears, a main drive shaft, a tensioning shaft and the drive of the handrails serving cardan shafts.

By the BE 563031 A a generic drive system for means of transport of a passenger transport system, in particular an escalator or a moving walkway, has become known.

In the US 3,658,166 A a passenger conveyor system, in particular a drive system for a passenger transport system is described, the constructive similar construction, like the BE 563031 A Has. Here, the intermediate drive gear has Evelventen trained tooth flanks.

Finally, the reveals US 5,819,910 a chain star in a modular design, which is intended for the low-noise deflection of link chains. At least at one end of the chain star damping elements are attached.

The aim of the subject invention is to propose a drive system for overlong escalators, regardless of which geometric shape, which is simple in construction and requires no oversized drives.

This object is inventively achieved in that the gear containing the electric motor is positioned in one of the deflection of the transport and the other electric motor is used exclusively for the linear movement of the transport, such that sockets, respectively roles, the link chains outside of the tooth base of the sprocket only below Line contact with individual teeth of the sprocket abut or roll, and that the point of force application of the cylinder liners / rollers on the respective tooth of the sprocket takes place in such a way that only a unidirectional force application component is given to the respective tooth.

Advantageous developments of the drive system according to the invention can be found in the associated subclaims.

According to a further aspect of the invention, the transmission arranged in the deflection region is provided with chain elements which engage in the respective tension members designed as link chains and deflect the link chains together with the transport means fastened thereto in the associated deflection region, each further gear cooperating with sprockets whose teeth are in the link chain engage and drive the same only linear.

It is particularly advantageous that the bushes of the link chains outside the tooth base of the respective sprocket only lie in line contact with individual teeth of the sprocket or roll.

The sprocket acts, according to another idea of the invention, in the region of its teeth with a ring-shaped approach together, which serves as a support body for individual tabs of the link chain. By this measure, it is ensured that the cylinder liners / rollers of the link chain do not come into contact with the tooth base, but rather always come to rest at the same point of the teeth of the sprocket to produce a purely unidirectional force component.

The entire consisting of electric motor, transmission and sprockets drive for the passenger conveyor system is advantageously positioned between the hinged to the transport links link chains.

Figur 1

Prinzipskizze einer Einrichtung zum Personentransport;

Figur 2

linienförmige Führungsformen von Transportabschnitten einer Rollsteigs;

Figur 3

linienförmige Führungsformen von Transportabschnitten eines Rolltreppe;

Figur 4

Teildarstellung des erfindungsgemäßen Antriebssystems;

Figur 5

Prinzipskizze der Führung des Zugorgans im Bereich eines Kettenrades;

Figur 6

Teildarstellung des Kettenrades gemäß Figur 5.

The subject invention is illustrated by means of an embodiment in the drawing and will be described as follows. Show it:

FIG. 1

Schematic diagram of a passenger transportation facility;

FIG. 2

linear guide shapes of transport sections of a rolling walkway;

FIG. 3

linear guide shapes of transport sections of an escalator;

FIG. 4

Partial representation of the drive system according to the invention;

FIG. 5

Schematic diagram of the leadership of the tension member in the range of a sprocket;

FIG. 6

Partial representation of the sprocket according to FIG. 5 ,

FIG. 1 shows a schematic diagram of a trained in this example as an escalator device for passenger transport 1. The same can, if necessary, also be a moving walkway, provided that the statutory angle of inclination are met. Only indicated is one of a plurality of stages 2 (transport means) existing stage belt 2 '. The different transport directions (upwards, downwards) are indicated by arrows. In the area of the input 3 and / or output section 4, a drive for the step band 2 '(not shown) may be positioned. In this example, the lower left part of the FIG. 1 an input section 3 and the right upper part of FIG. 1 represent an output section 4. Between the bottom Input section 3 and the upper output section 4 extends a transport section 5, which is formed in this example as a spatial curve arc. Also conceivable is an overlong, under a predeterminable inclination angle between the input section 3 and the output section 4 extending rectilinear escalator, respectively a moving walkway. In this example, a curve should be given, which has a predeterminable radius R, for example, 210 m. In this example, a curved substructure 6 is provided on the building side, which accommodates the transport section 5. As already mentioned, the transport section 5 can also be designed to be self-supporting under certain conditions. The transport section 5 itself is formed by a plurality of rectilinearly extending scaffolding sections 7. Each scaffold section 7 can have supports 8, by means of which it can be adjustably supported on the surface 9 of the substructure 6. As in FIG. 2 shown, the respective frame section can also be bent or arbitrarily shaped executed.

FIG. 2 shows in line form some technically feasible ways to connect entry and exit sections of a moving walkway with transport sections. In the case of moving elevators, care must be taken to ensure that the legally prescribed angles of inclination are observed.

FIG. 3 shows in line form some technically feasible ways to connect entry and exit sections of an escalator with transport sections. Different convex and concave curved sections are used. The different radii are represented by arrows. As already stated, the radii can be of different sizes. If necessary, curved transport sections can be combined with rectilinear transport sections.

FIG. 4 shows a schematic diagram of a conventional device for passenger transport 1 ', formed in this example by an overlong escalator. All components shown here can also be applied to one Passenger conveyor 1 according to FIG. 1 be transmitted. In the example according to FIG. 4 In the upper deflection region 23 of the device 1 ', a first electric motor 24 together with the indicated reduction gear 25 is positioned. The structural design of the drive 24/25 can be analogous to DE 25 41 397 respectively.

In the lower region 26 of the device 1 ', an additional handrail drive 27 is provided in this example.

The device 1 'can be used to overcome arbitrarily large transport heights and / or transport distances by at least one further electric motor 28,29,30 together with reduction gears 31,32,33 positioned between the not shown here, forming transport aids, link chains in the transport section A. becomes. This arrangement forms an extremely space-saving design. Not shown here is that provided in the area 23 electric motor 24, respectively the reduction gear 25, cooperates with two deflecting elements formed by chain stars, which deflect the link chains together with transport in their direction. All electric motors 24,28,29,30, reduction gear 25,31-33 are designed in terms of performance in about the same, with each electric motor 24,28,29,30 for the movement of the transport over a defined section a, b, c of the transport path A. is used.

The other electric motors 28 to 30, respectively, the associated reduction gear 31 to 33, cooperate with sprockets, also not shown, which are in engagement with the cylinder liners or roles-containing link chains and are responsible exclusively for the linear movement of the transport, respectively the link chains ,

FIG. 5 shows a partial view of one of the sprockets 34, which cooperate with the other reduction gears 31,32,33 in the transport path A. Visible is the formed of a plurality of tabs 35 Lashing chain 36. In the end regions of the tabs 35 cylinder liners 37 / rollers are positioned, through which the tabs 35 are movable relative to each other. The direction of movement of the sprocket 34 is indicated by an arrow. It can be seen that the link chain 36 is moved exclusively in the linear direction (arrow). The sprocket 34 is provided with teeth 38 which engage in the space between adjacent tabs 35.

In many cases polygon effects or the like restless movements are given during the transport of link chains. To exclude this in the subject invention, a special tooth shape is selected in which the force application of the cylinder liner 37 / roller on the tooth 38 is such that a right angle is formed. By this measure, multidirectional forces at the point of application 40 are avoided. Thus, outside of the tooth base 39, only a linear contact takes place in the point of application 40 between the tooth 38 and the bush 37 / roller, so that only a unidirectional force application is given at the respective point of application.

By analogy with the electric motor 24 / reduction gear 26 arranged in the deflection region 23, the further drive units 28, 31, 29, 32 and 30, 33 provided in the region of the transport path A are also positioned between the link chains 36.

FIG. 6 shows a partial view of a section of the sprocket 34 according to FIG. 5 , Visible are the teeth 38 and a trained in this example as a separate approach 41 ring which is releasably connected by screws 42,43 with the Kettenradbasis 34 'of the sprocket 34. The approach 41 in this case carries a plastic body 44, on which a tab 35 of in FIG. 5 illustrated link chain 36 is supported. By this measure, a defined distance between the cylinder liner 37 / roller and the tooth base 39 of the sprocket 34 is brought about. <B> LIST OF REFERENCES </ b> 1 Facility 41 annular approach 1' Facility 42 screw 2 step 43 screw 2 ' Stufenbandprofile 44 Plastic body 3 input section 4 output section 5 transport section 6 substructure A transport distance 7 framework section R radius 8th In stock a defined section 9 surface b defined section 23 deflection c defined section 24 first electric motor 25 Reduction gear 26 lower area 27 Handrail drive 28 electric motor 29 electric motor 30 electric motor 31 Reduction gear 32 Reduction gear 33 Reduction gear 34 Sprocket 34 ' Kettenradbasis 35 flap 36 link chain 37 Rifle 38 tooth 39 tooth root 40 attackpoint

Claims (9)

1. A drive system for transport means of a passenger transport installation (1, 1'), in particular an escalator or a moving walkway, wherein the transport means (2'), in particular steps or pallets, are actively connected to pulling elements (36) and the pulling elements (36) can be moved in the transport direction by means of at least one electric motor (24) provided with a gear train (25), wherein at least one further electric motor (28, 29, 30) interacting with a gear train (31, 32, 33) is arranged in the course of the transport path (A), at least some of the electric motors (28-30) and gear trains (31-33) are designed to have approximately the same power and the one electric motor (24) is provided for reversing the transport means (2'), characterized in that the electric motor (24) containing the gear train (25) is positioned in one of the reversing areas (23) of the transport means (2') and the further electric motor (28-30) exclusively serves for the linear motion of the transport means (2'), in such a way that bushes (37), respectively rolls of the plate link chains (36) are adjacent to or roll along individual teeth (38) of the chain wheel (34) while only getting into line contact, outside the tooth ground (39) of the chain wheel (34), and that the point of force application (40) of the cylinder bushes (37)/rolls on the respective tooth (38) of the chain wheel (34) is realized such that only a one-directional force application component is generated at the respective tooth (38).
2. A drive system according to claim 1, characterized in that the gear train (25) arranged in the reversing area (23) is provided with chain starwheels which engage with the respective pulling element formed as plate link chains (36) and reverse the plate link chain (36) in the associated reversing area (23), and that the further gear train (31-33) interacts with chain wheels (34), the teeth (38) of which engage with the plate link chain (36) and drive the same one in an exclusively linear direction.
3. A drive system according to claim 1 or 2, characterized in that the chain wheel (34) is provided with at least one shoulder (41) in the area of its teeth (38), which shoulder supports individual plates (35, 36) when the plate link chain (36) runs through the chain wheel (34).
4. A drive system according to one of the claims 1 through 3, characterized in that the shoulder (41) is an integral component of the chain wheel (34).
5. A drive system according to one of the claims 1 through 3, characterized in that the shoulder (41) is formed by a separate ring-shaped body which is detachably connected to the chain wheel (34).
6. A drive system according to one of the claims 1 through 5, characterized in that the shoulder (41) is at least partially made of synthetic material having a predeterminable Shore hardness.
7. A drive system according to one of the claims 1 through 6, characterized in that the further electric motor (28-30) including gear train (31-33) is positioned between the plate link chains (36) connected to the transport means (2').
8. A drive system according to one of the claims 1 through 7, usable for excessively long escalators (1, 1') and moving walkways.
9. A drive system according to one of the claims 1 through 8, usable for escalators (1) or moving walkways which are designed like a spatial curve arc.

Images