EP1302431A1 - Roped elevator system with two cars travelling in common and separate hatchway sections - Google Patents

Abstract

Lift system comprises baskets (21, 22) travelling in a lift shaft (12) and connected to a counterweight (29) via supporting devices (26, 27). Each basket has a drive (31, 32). A common travelling section (a) is assigned to at least one of the baskets and a travelling section (b) is assigned to both baskets. The baskets are able to travel in the same direction as well as in opposing directions. <??>Preferred Features: The baskets run on guide rails in the region of a common travelling section.

Description

The invention relates to an elevator system for transporting loads and / or persons in a hoistway with at least two persons Lift shaft movable cars, which have suspension means with a Counterweight are associated with each car associated with a drive is.

Such elevator systems are known from U.S. Patent No. 1,837,643 known. It is proposed in the elevator shaft two cars to arrange one above the other. The two cars are about one Supporting cable coupled with a common counterweight.

The use of multiple cars in a hoistway will also be in U.S. Patent No. 5,699,879. Therein it is proposed assign a separate counterweight to each car, wherein the counterweights are positioned one above the other.

To avoid that when arranging several cars on top of each other limited in a hoistway the mobility of the cars is no longer removing all the floors from all the cars can be approached in the US patent No. 5 419 414, the use of additional alternative or storage locations proposed at the top and at the bottom of the elevator shaft are arranged. Such alternative places are however associated with very significant construction costs.

Japanese Publication JP-A-4-341 479 proposes Dodge spaces for the cars in a central area of the elevator shaft to arrange. Here are two cars in a hoistway provided, which are coupled pendulum-like such that an upward travel of the one car is a downward travel the other car requires. Stops one of the cars, so this necessarily has a hold of the other car result. The conveying capacity of such elevator systems is thus limited.

Object of the present invention is an elevator system of the generic Such a way that it can be produced inexpensively is and has an improved production capacity.

This object is achieved in an elevator system of the aforementioned Art according to the invention solved in that at least two cars along the elevator shaft sections at least one common Road section and additionally separate, juxtaposed Roadway sections are associated with the cars both in the same direction and in opposite directions Directions are movable.

The movement of the two cars along the elevator shaft runs thus partially along a common roadway section and partially along separate, adjacent roadway sections. This gives the possibility of having multiple cars in one Use elevator shaft, each car in particular the Final stops can approach and the individual cars from each other independently in the same direction or in opposite directions Driving directions. Depending on which area within of a building to expect a particularly high passenger volume is, the separate, adjacent lane sections for example, in a lower, a middle and / or be arranged at an upper portion of the elevator shaft, wherein the separate lane sections over common lane sections connected to each other.

It can be seen from the user, the separate lanes be arranged side by side with the floor doors or even one behind the other and the approach can be from the front and / or from the back the elevator shafts take place. Likewise, of course, the Shaft doors should also be arranged laterally on the roadways, so that The approach can be done from both sides. If in the field of disconnected Lanes the distance of the lanes to each other large enough, the landing doors can also be between the Roadways can be arranged and passengers can between the Board elevator shafts.

Both in the area of a common roadway section as well in the area of separate lane sections can the individual cars each be assigned separate guide rails. It can be provided that the cars in the area of a common Road section along shared guide rails are movable. For this it is favorable, in the transition area between separate and common road sections Umlenkoder To arrange Umsetzmittel so that the cars to the respective Guide rails are transferable.

Preferably, both in at least one common roadway section as well as in separate carriageway stops arranged for loading and unloading the cars. So, for example be provided that in the region of the separate lane sections Each lane section at least one separate stop on each floor, taking in each floor several preferably juxtaposed shaft doors provided are so that these floors of a variety of cars can be approached.

In the transition area from a common lane section to separate, adjacent roadway sections are preferably associated with only one lane section shaft doors. But it can also open the shaft doors for a road section the shaft front and the shaft doors for another lane section be arranged on the back of the shaft, so that through every car can be served every floor.

It can be provided that the separate lane sections each associated with at least one particular car. Preferably the separate lane sections are each only one single car approachable.

It is advantageous if the separate lane sections each of at least two cars are approachable. This allows a higher one Flexibility of the elevator system, being particularly provided may be that a total of more cars are used as separate roadway sections are provided. So, for example be provided that the elevator system has a total of three cars has, wherein in at least one area of the elevator shaft two provided side by side separate roadway sections and at least one common lane section is used.

As mentioned above, the cars are on the support means, for example via steel or plastic suspension ropes or else via toothed or flat belt, coupled with a counterweight. It can be provided that the cars each separate Counterweights are assigned, the counterweights along the Elevator shaft either separately next to each other or at least partially movable in a common counterweight roadway are.

The drive assigned to each car can, for example, be used as a traction sheave drive drive the suspension element or a separate traction device, or he can, for example, directly the car or the counterweight drive.

Particularly cost-effective to produce an elevator system in which the Counterweights arranged one above the other and in a common Counterweight roadway are movable.

In a preferred embodiment of the elevator system according to the invention is provided that in addition to a common lane section for the cars two counterweight carriageways side by side are arranged. Such a configuration has the advantage that each car can be assigned a separate counterweight, the counterweights being movable along separate lanes are, so that a disturbance of the mobility of one of the counterweights does not affect the mobility of the other counterweight.

In particularly cramped space, it has to be advantageous proven when next to a common lane section for the Cars a counterweight carriageway with two superimposed Counterweights is positioned. The counterweights can suspended with different suspension conditions be.

In a preferred embodiment it is provided that the counterweights of two cars connected to a unit or as Unit are formed and that the two cars on a common Suspension element strand, for example a common strand of rope, connected to each other. The counterweights of the cars form a single counterweight unit, with both cars is coupled.

Preferably, it is provided that the suspension ratios of two cars and the associated counterweights different are. For example, for a first car, a suspension ratio 1: 1, for the second car a suspension ratio 2: 1, and for the common counterweight unit a suspension ratio 4: 1 be provided with additional pulleys used for the suspension element. Such a suspension As a result, the counterweight unit has a smaller area the height of the lift passes, which is traversed by the cars. in the The example shown is that of the counterweight unit traveled lifting height only 75% of the driven by the cars Lifting height.

To increase the delivery capacity can be provided that the Elevator system at least two juxtaposed common Roadway sections, wherein between the common Roadway sections, the counterweights are arranged. Here is it favorable when the the cars of a common road section associated counterweights in each case to one another Unit connected or formed as a unit. Such Embodiment is characterized by at least two adjacent arranged road strands, each roadway at least a common roadway section and in addition at least two separate, adjacent lane sections having. Between the two lane strands are the counterweights arranged so that a total of a particularly space-saving Design results.

It is particularly advantageous if the cars different Have maximum speeds. Here it is favorable, if in a common lane section the faster car over the slower car is arranged.

In a structurally particularly simple embodiment of the invention Elevator system is provided that a first car in the elevator shaft only in the vertical direction is movable and the second car at least in the area of a stop laterally next to the first car is movable. Especially with such Embodiment, it is advantageous if the cars different Have maximum speeds. Thus, for example, provided be that the faster car in the elevator shaft only in vertical Direction is movable, while the slower car at least in the area of a stop sideways next to the faster one Car is movable.

Especially in cases where the entry into a common Lane section and / or the exit from a common Road section over several floors, However, it can also be provided that the slower car in the elevator shaft can only be moved in the vertical direction while the faster car at least in the area of a stop laterally next to the slower car is movable. The faster one Car can the transition area between the separated lane sections and the common carriageway section in shorter Overcome time. Preferably, the faster car in the Transition area no stops assigned while the slower, only in the vertical direction movable car also in the Transition area between the separated carriageway sections and a common lane section on each floor a stop having.

As mentioned earlier, the guidance of the cars in the area of a common roadway section take place in such a way that the Cars use either the same guide rails or that separate guide rails are provided in each case. Be the same Used guide rails, so can in the transition area between the separate lane sections and the common Road section example switches or a deflection or Umsetzsystem be used. It can be provided that at least a car when entering a common lane section and / or when moving out of a common Road section is guided along additional guide rails.

If different for the upper and lower car guides Guide rails can be used with firmly attached to the car Guides arranged at different distances arranged the vertical orientation of the car by correspondingly large guide rail distances be achieved.

In a particularly preferred embodiment, wherein the upper and the lower car guides use the same guide rails, is provided that when driving in a car in a common roadway section and / or when moving out aligning the car from a common lane section of the car is controlled by a handlebar system. By the handlebar system can be ensured in a structurally simple way be that the car also in the transition area between a common lane section and a separate lane section essentially retains its vertical orientation.

For example, it may be provided that at least one car is arranged on a guided on guide rails frame, the via movable handlebars connected to the car is to align of the car when entering and leaving a common Road section. Similarly, the handlebar system between the Frame and the guide rails to be arranged firmly with the Car connected frame or car is without frame coupled directly to the guide rails by the handlebar system.

The handlebar can be designed to be pivotable and the Car related to the associated guide rail when on and Extend out of the common roadway section laterally, so that the car is essentially its vertical orientation maintains while the guide rail in the transition area between the common lane section and the separated one Lane section is aligned obliquely to the vertical.

Are the cars in a common lane section along movable common rails, it can be provided that the pivoting of the handlebar on one side of the joint Road section of extending car with a Release the guides on the other side of the car from the Guide rails is coupled.

In a preferred embodiment it is provided that by the Handlebar system the distance between the guide and the car at least in an upper or a lower portion of the car in substantially horizontal direction is changeable.

The linkage system may be electrically driven and / or controllable. Preferably, the link system is mechanically actuated. So can For example, be provided that the handlebar system, a piston-cylinder unit in the transition area between a common lane section and a separate lane section hydraulically or pneumatically pressurizable. In particular, with an adjustable handlebar system in the inlet and Extension areas of the transition area one for the user pleasant car position to the beginning or ending Transverse acceleration can be achieved as a controlled damping of the car shuttle can be achieved.

Figur 1:

eine schematische Längsschnittansicht einer ersten Ausführungsform eines Aufzugsystems gemäß der vorliegenden Erfindung;

Figur 2:

eine Draufsicht auf das Aufzugsystem gemäß Figur 1 mit in einem gemeinsamen Fahrbahnabschnitt übereinander angeordneten Fahrkörben;

Figur 3:

eine Schnittansicht längs der Linie 3-3 in Figur 1 mit in einem gemeinsamen Fahrbahnabschnitt übereinander angeordneten Fahrkörben;

Figur 4:

eine Schnittansicht längs der Linie 4-4 in Figur 1 mit in getrennten Fahrbahnabschnitten nebeneinander angeordneten Fahrkörben;

Figur 5:

eine schematische Darstellung der Kopplung der Fahrkörbe mit einem gemeinsamen Gegengewicht;

Figur 6:

eine schematische Darstellung der Führung eines in einem Übergangsbereich schräg zur Vertikalen verfahrbaren Fahrkorbes;

Figur 7:

eine alternative Ausgestaltung des Fahrkorbes gemäß Figur 6;

Figur 8:

eine schematische Längsschnittansicht einer zweiten Ausführungsform eines Aufzugsystems gemäß der vorliegenden Erfindung;

Figur 9:

eine schematische Längsschnittansicht einer dritten Ausführungsform eines Aufzugsystems gemäß der vorliegenden Erfindung;

Figur 10:

eine schematische Längsschnittansicht einer vierten Ausführungsform eines Aufzugsystems gemäß der vorliegenden Erfindung.

The following description of preferred embodiments of the invention is used in conjunction with the drawings for further explanation. Show it:

FIG. 1:

a schematic longitudinal sectional view of a first embodiment of an elevator system according to the present invention;

FIG. 2:

a plan view of the elevator system according to Figure 1 with in a common lane section superposed cars;

FIG. 3:

a sectional view taken along line 3-3 in Figure 1 with in a common lane section stacked cars;

FIG. 4:

a sectional view taken along line 4-4 in Figure 1 with in separate lane sections side by side arranged cars;

FIG. 5:

a schematic representation of the coupling of the cars with a common counterweight;

FIG. 6:

a schematic representation of the leadership of a movable in a transition region obliquely to the vertical car;

FIG. 7:

an alternative embodiment of the car according to Figure 6;

FIG. 8:

a schematic longitudinal sectional view of a second embodiment of an elevator system according to the present invention;

FIG. 9:

a schematic longitudinal sectional view of a third embodiment of an elevator system according to the present invention;

FIG. 10:

a schematic longitudinal sectional view of a fourth embodiment of an elevator system according to the present invention.

In the figures 1 to 7 is in highly schematic form a first Embodiment of an elevator system according to the invention shown which is occupied overall by the reference numeral 10. The elevator system is installed in an elevator shaft 12 with a shaft bottom 13, a shaft ceiling 14 and with shaft side walls 15 and 16 and a shaft rear wall 17 and a shaft front wall 18.

The elevator system 10 comprises two cars 21, 22, along the Elevator shaft 12 are movable. The movement of the cars 21, 22 takes place in an upper region of the elevator shaft 12 along a common lane section a, in a lower area the elevator shaft are separate, juxtaposed Roadway sections b provided. Go through the two cars 21 and 22, the common lane section a, they are one above the other arranged. In the separate lane sections can against it the cars 21 and 22, in particular from the figures 1 and 4 becomes clear, are arranged side by side. The common Lane section a is from the separate lane sections b separated by a transition region c. During the first car 21 along the entire elevator shaft 12 only in vertical Direction is movable, the direction of travel of the second runs Carriage 22 in the transition area c obliquely to the vertical. The Driving direction of the second car 22 is in the transition region c represented by the double arrow 24.

The cars 21 and 22 are via support cables 26 and 27 with a coupled common counterweight 29, wherein the support cables 26 and 27 connected in the region of the counterweight to a common rope are. To drive the cars 21 and 22 is in the field of Shaft cover 14 each held a separate drive 31 and 32 respectively. The drives 31 and 32 each comprise a traction sheave 33 or 34, over which the support cables 26 and 27 are guided. This is shown in FIG. 2 clear. To guide the suspension cables 26 and 27 are in the area of Shaft cover 14 guide rollers 36 and 37 rotatably held.

To determine the support cable 26 includes the first car 21 related centered on its base a suspension cable suspension 39, a corresponding suspension cable suspension 40 is laterally on the second Car kept 22. This will ensure that the ride of the first car 21 in the common lane section a not hampered by the second car 22 associated carrying cable 26 becomes. Alternatively, could also for the first car 21 a lateral Arrangement of the suspension cable suspension 39 are used or a diagonal suspension with a double rope, giving back a total central suspension is accessible.

To guide the first car 21 in the vertical direction along the elevator shaft 12 are two in cross-section each T-shaped Guide rails 42, 43 by means of rail supports 44 and 45 at the Shaft side wall 16 is held. The first car 21 has in itself better known and therefore only greatly simplified in the drawing Way the guide rails 41 and 42 associated guides 46, 47, each encompassing a guide rail 42 and 43, respectively (not shown). To guide the second car 22nd along the elevator shaft 12 are a total of 4 guide rails 51, 52, 53, 54 are used, which are each T-shaped and encompassed by associated guides of the second car 22 become. The guide rails 51 to 54 are on rail carriers 56 and 57, which are fixed to the shaft side wall 15. Here, the guide rails 51 and 52 at a greater distance to Shaft side wall 15 arranged as the guide rails 53 and 54. As becomes clear in particular from FIG. 6, those with the guide rails are 53 and 54 coupled guides 58, 59 over horizontal aligned, rigid arms 61 and 62 at one fixed lower portion of the second car 22, while the Guide rails 51 and 52 associated guides 64 and 65 in only a short distance at an upper area of the second car 22 are held. The leadership of the second car 22 via two in arranged at different distances from the shaft side wall 15 Guide rail pairs, the leadership of the car 22 in one serve upper area or a lower area, allows, as FIG. 6 shows the second car 22 also when driving through the car Align transition region c substantially in the vertical direction, although the direction of travel 24 of the second car 22 in this Range oblique to the vertical runs according to the track guide rails 52 and 54 in FIG. 6.

An alternative embodiment of the second car 22 is shown in FIG. 7 represented and overall occupied by the reference numeral 122. Of the Car 122 is movably supported on a catch frame 125, which again in the usual and therefore not shown in the drawing Way is guided on a pair of guide rails. The holder of the Car rack 122 on the catch frame 125 takes place at its upper area via a rigid deflector 127, which is about a horizontal, parallel to the Shaft side wall 15 aligned pivot axis 128 pivotally hinged to the catch frame 125. For holding the car 122 in its lower part on the catch frame 125 is a handlebar system 130 for use with a piston-cylinder unit 131, wherein a cylinder 133 is hinged to the catch frame 125. In the cylinder 133, a piston 134 is slidably supported on the one over the Cylinder 133 protruding piston rod 135 is fixed, the free End to a rigidly connected to the car 122 pivot arm 136 is articulated.

The second car 122 passes through the transition region c with an angle to the vertical direction of travel 24, so he can with the help of Handlebar system 130 relative to the catch frame 125 about the pivot axis 128 are pivoted so that it is also in the area between the common lane section a and the separated lane sections b substantially retains its vertical orientation.

As already mentioned, the two cars 21 and 22 is a common Counterweight 29 assigned. The suspension of the cars 21, 22 and the counterweight 29 is illustrated in FIG. in this connection are for better clarity, the two cars 21 and 22 arranged laterally next to the counterweight 29. The Supporting cables 26 and 27 form a common strand of rope, the Rides 21 and 22 and the counterweight 29 connects to each other. Here, the two cars 21 and 22 independently be moved over the traction sheaves 33 and 34, wherein the counterweight 29 performs a corresponding compensating movement. As is clear from Figure 5, the leadership of the two cars takes place 21 and 22 and the counterweight 29 interconnecting Cable pull in such a way that the carrying cable, starting from the first car 21 initially guided over the guide roller 37 and the traction sheave 34 Then, the support cable is rotatable about the counterweight 29 held pulleys 67 and 68 led to the traction sheave 33, from the from the support cable via the deflection roller 36 to the second car 22nd is guided.

To guide the counterweight 29 are on the rail supports 44th and 45 guide rails 70 and 71 held, which are also T-shaped are configured and not shown in the drawing, in itself known guides are encompassed with the counterweight 29 are connected.

In the elevator system 10 shown in Figure 1 is the in vertical Direction movable first car 21 in each floor one Shaft door 73 assigned, so that by means of the first car 21st all floors of the building can be approached.

In contrast, the second car 22 in the transition area c no shaft doors assigned, so that the second car 22nd in the area between the common carriageway section a and the separated lane sections b no floors can drive. The second car 22, however, has a higher maximum speed on than the first car 21, so that the second car 22 in relatively short time, the transition area c can drive over while from the relatively slow car 21 in this transition area c the individual floors can be approached.

In Figure 8 is an alternative embodiment of an elevator system represented, which is generally designated by the reference numeral 80. This differs from the above with reference to the Figures 1 to 7 explained elevator system 10 only in that within the transition area c the second car 22 each Shaft doors are assigned, so that the second car 22 in the Transition area c can drive to the respective floors while for the first car 21 in the transition area c no shaft doors are provided. Alternatively, for a car within the Transition area c doors on the front of the bay and for one another car in the transition area c doors on the back of the shaft be arranged.

In the embodiments of Figure 1 and Figure 2 are only in lower portion of the elevator shaft 12 separate lane sections provided in which the cars 21 and 22 arranged side by side can be. Such a configuration of the elevator system is particularly suitable for buildings, especially in one lower range have a very high passenger volume. In these lower levels can, for example, a canteen be provided, which has a high level of publicity, while the higher floors of a smaller number of visitors be approached.

However, it may also be provided that both in a lower Building area as well as in an upper building area a high Public traffic is expected, so it is beneficial if both in the lower area as well as in the upper area of a hoistway separate roadway sections are provided. An elevator system with such a configuration is shown in Figure 9 and total occupied by the reference numeral 85. It stands out because of it from that both above and below a centrally located common lane section a separate lane sections b1 or b2 are arranged, each via a transition region c1 or c2 are connected to the common lane section a. In the separate lane sections b1 and b2, the cars 21 and 22 are each positioned side by side to within as many passengers as possible access to to enable these floor areas.

Another alternative elevator system is shown in FIG. 10 and FIG total occupied by the reference numeral 90. This is different of the above with reference to Figures 1 to 7 explained Elevator system 10 characterized in that a total of four cars 91, 92, 93 and 94 are used, those in a lower area the elevator system 90 each separate lane sections b1 and b2 are assigned while in an upper area of the elevator system 90 side by side two common lane sections a1 and a2 are provided, in each of which two cars 91, 92 and 93, 94 arranged one above the other are movable. Two cars each 91, 92 and 93, 94 is associated with a common counterweight 96 and 97, respectively. The counterweights 96, 97 are vertical between the two Roadways are movable and they can, as shown, side by side However, they can also be used for width reduction be arranged one behind the other.

Claims (21)

Elevator system for transporting loads and / or persons in an elevator shaft (12) having at least two elevator cars (21, 22) movable in the elevator shaft (12), which are connected via suspension means (26, 27) to a counterweight (29), each one Car (21, 22) is associated with a drive (31, 32), characterized in that at least two cars (21, 22) along the elevator shaft (12) sections at least one common lane section (a) and additionally separate, juxtaposed lane sections ( b) are assigned, wherein the cars (21, 22) are movable in both the same direction and in opposite directions. Elevator system according to Claim 1, characterized in that the cars (21, 22) are guided on guide rails, wherein the same guide rails are assigned to the cars in the region of a common roadway section. Elevator system according to Claim 1, characterized in that the cars (21, 22) are guided on guide rails (42, 43, 51, 52, 53, 54), wherein the cars are respectively provided with separate guide rails (42) in the area of a common roadway section (a) , 43, 51, 52, 53, 54). Elevator system according to one of the preceding claims, characterized in that stops for loading and unloading are arranged in at least one common roadway section (a) and in separate roadway sections (b). Elevator system according to one of the preceding claims, characterized in that the separate carriageway sections (b) are each assigned to at least one specific car (21; 22). Elevator system according to one of Claims 1 to 5, characterized in that the separate carriageway sections (b) can each be approached by at least two cars. Elevator system according to one of the preceding claims, characterized in that the cars are each assigned separate counterweights, wherein the counterweights are at least partially movable in a common counterweight roadway. Elevator system according to one of the preceding claims, characterized in that, in addition to a common roadway section for the cars, at least two counterweight carriageways are arranged side by side. Elevator system according to one of claims 1 to 7, characterized in that a counterweight roadway with at least two superimposed counterweights is arranged next to a common roadway section for the cars. Elevator system according to one of claims 1 to 6, characterized in that the counterweights of two cars (21, 22) are connected together to form a unit or unit (29) and that the two cars (21, 22) via a common suspension element strand connected to each other. Elevator system according to one of the preceding claims, characterized in that the suspension ratios of two cars (21, 22) and the associated counterweights (29) are different. Elevator system according to one of the preceding claims, characterized in that the elevator system (90) comprises at least two common roadway sections (a1, a2) arranged side by side, wherein the counterweights (96, 97) are arranged between the common roadway sections (a1, a2). Elevator system according to one of the preceding claims, characterized in that the cars (21, 22) have different maximum speeds. Elevator system according to one of the preceding claims, characterized in that a first car (21) in the elevator shaft (12) is movable only in the vertical direction and that the second car (22) at least in the region of a stop laterally next to the first car (21) movable is. Elevator system according to one of the preceding claims, characterized in that at least one car is guided on entering a common roadway section and / or on exit from a common roadway section along additional guide rails. Elevator system according to one of the preceding claims, characterized in that the driving in of a car (22) into a common roadway section (a) and / or the driving out of the car (22) from a common roadway section (a) by a deflection or transfer system or points is possible. Lifting system according to one of the preceding claims, characterized in that, when a car (22) enters a common roadway section (a) and / or when the car (22) is moved out of a common roadway section (a), the car is aligned by a steering system ( 130) is controlled. Elevator system according to one of the preceding claims, characterized in that at least one car (122) is held on a guide rail guided frame (125) which is connected via movable links (127, 131) to the car (122) for aligning the car (122) when entering and / or extending from a common track section (a). Elevator system according to claim 17 or 18, characterized in that the distance between the guide and the car (122) can be changed by the handlebar system (130) in a substantially horizontal direction at least in an upper or a lower region of the car (122). Elevator system according to one of the preceding claims, characterized in that upper and lower guides (65, 59) of a car use identical or different guide rails (52, 54). Elevator system according to claim 20, characterized in that the upper and lower guides (65, 59) are held at different distances from the car.

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