HK1071558C - Elevator with two cars arranged one above the other in the same hoistway - Google Patents

Description

The invention relates to a lifting system for the transport of persons/goods, a method for operating this lifting system and a method for the modernization of a lifting system as defined by the general terms of the independent claims.

In the case of new elevator installations, the desire is for space-saving and easy-to-install elevators, which means that the elevators no longer require separate machinery spaces but fit into simple, standardised, square shafts, reducing the costs of building design and construction and increasing the usable building space.

In the case of upgrading of elevators, the aim is to increase the lifting capacity of the elevators, but this is to be achieved with minimal structural changes to the buildings in order to keep the cost of the upgrade low.

US5419414 shows an elevator system with several cabins arranged one above the other in a shaft. The cabins are operated independently of each other. Each cabin has a drive and counterweight. The cabins are connected by cables as a means of transportation with counterweights. In order for all cabins to serve the same floors of the building, escape rooms are provided above and below the floors served by the cabins. Thus, first cabins can enter these escape rooms and further cabins can be entered into the space in the shaft of the first cabins. The drives are mounted above the shaft.

A disadvantage of the US5419414 doctrine is that the installation of multiple drives in an engine room above the shaft is cumbersome. Such an engine room is often difficult to access. For example, the drives must be disassembled for transport to the engine room so that they fit through corridors and doors, which are on the way to the engine room.

WO02/030801 also reveals a lift system with several cabins arranged one above the other in a shaft. The cabins are operated independently of each other.

The purpose of the invention is to provide a lift system that is easy and cost-effective to install, that provides a high conveying power and that makes it easy and cost-effective to upgrade an existing lift system.

These tasks are solved by the invention as defined by the general terms of independent claims.

The invention solves this problem by means of a lifting system in which not one, but at least two cabins are arranged vertically in the direction of travel. The cabins are moved by one drive per cabin along at least one cabin guide rail. The drives are connected to the cabins by means of conveyors. According to the invention, the drives are arranged near different first walls in the shaft.

The drives are therefore located in the shaft, e.g. in the shaft head. This eliminates the machinery space, which makes optimal use of the building space and at the same time significantly increases the conveying power by using at least two cabins in the same shaft.

Preferably, a counterweight is provided per cab. Preferably, the drives are placed largely above the counterweights in the shaft. Preferably, the drives are placed at a similar height in the shaft. Preferably, each drive of a cab above the counterweight from this cab is placed close to the first walls in the shaft. Preferably, at least one counterweight guide rail is provided per counterweight. Preferably, the drives are supported at the ends of the guide rail for cab and counterweight. Preferably, the conveyor centers are located at the guide rail for electrical cabs. Preferably, the counterweight is mounted directly or indirectly on the counterweight or counterweight for the guide rail, or directly or indirectly over the counterweight or counterweight for the guide cab and is either mounted horizontally or indirectly over the counterweight or counterweight for the guide rail and directly or indirectly protected by the electrical or electrical counterweight.

In this way, otherwise unusable chassis space above the counterweights is used to a large extent for mounting the drives and electricity. The guide rails for the cabin or counterweight or the horizontal carriers also form a self-supporting structure for carrying the drives, cabins, counterweight and electricity and for fixing the fixing points of the conveyor. This structure is largely symmetrical and reflected in relation to a diagonal of the shaft cross section.

It is preferable to access the cabins through floor doors, which are located on second walls in the shaft, which are different from the first walls.

This makes the best use of not only the shaft space but also the shaft walls and thus access to the lift system. e.g. guide rails, counterweights and drives are placed close to the first two walls of the shaft, while access to the lift system is via floor doors, which are located on two second floor walls.

Preferably, at least one escape room for at least one cab is provided, which is located in the shaft head and/or shaft floor.

The first cabin now occupies no space in the shaft area of the serviced floors and another cabin can be accessed in this space. Thus, not only the first cabin but also another cabin can build the floor below or above the A-space, as in particular in the impact operation, to increase the conveying capacity.

The following illustrations of the invention are given in detail, showing: Fig. 1a schematic side view of part of a first design of a lift with two 2:1 suspended cabins in one shaft,Fig. 2a schematic side view of part of the first design of a lift according to Fig. 1,Fig. 3a schematic side view of part of a second design of a lift with two 1:1 suspended cabins in one shaft, andFig. 4a schematic side view of part of the second design of a lift according to Fig. 3,Fig. 5two side schematic side views of part of a design of a modernized lift where an existing machinery room is being converted into a folding room.

Err1:Expecting property name enclosed in double quotes: line 1 column 180 (char 179)

Err1:Expecting ',' delimiter: line 1 column 213 (char 212)

The advantage of the elevator system 10 is that it has a 4' drive per cabin 1. A first drive 4 drives the upper cabin 1 and a second drive 4 drives the lower cabin 1. The 4' drive is a drive-disc drive, for example. Knowledge of the present invention enables the use of all known and proven drives.

The advantage is that the lifting system 10 has a counterweight of 2.2' per cabin 1.1, a drive unit connects and drives a cabin 1.1' to a counterweight of 2.2' via at least one conveyor 5, 5' and a first conveyor 5' connects the lower cabin 1 to an upper counterweight 2 and a second conveyor 5' connects the upper cabin 1 to a lower counterweight 2'. The advantage is that the counterweights 2.2' are carried alongside the 1.1' cabins. For example, the cabins 1.1' are carried in the centre of the shaft and the 2.2' conveyors are carried at the shaft edge close to the first 1111 wings at the latest. The conveyor 5' can be of any shape, depending on the material used. The B-5' is a round conveyor, or 5' is a reel of steel, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a reel of teak, 5' is a teak, 5' is a teak, 5' is a teak, 5' is a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a teak, a te

Err1:Expecting ',' delimiter: line 1 column 209 (char 208)

The cabs 1, 1' and 2, 2' counterweights can be used in 1:2 enclosure or 1:1 enclosure. In 1:2 enclosure the conveyor is connected 5, 5' to the cab 1, 1' and 2, 2' counterweights via at least a rolling coil 21, 21', 20, 20' and in 1:1 enclosure the conveyor is connected 5,5' to the cab 1, 1' and 2, 2' counterweights directly by one end.

Err1:Expecting ',' delimiter: line 1 column 583 (char 582)

In the version of a lifting system 10 as shown in Fig. 3 and 4, the cabs and counterweights are surrounded 1:1. The conveyor 5,5' runs from a first conveyor fixing point 50 at the counterweight 2,2' to the drive wheel of the drive 4,4' and from there to a second conveyor fixing point 50' at the cab1,1'. The advantage of the 1:2 suspension over the 1:1 suspension is that comparatively lower-powered and thus smaller and cheaper 4,4' drives can be used.

Err1:Expecting ',' delimiter: line 1 column 149 (char 148)

The advantage is that the drives 4,4' are located at a level of approximately the same height in shaft 11. The advantage is that the drives 4,4' are located at a level of approximately 2.2' of the counterweights. The advantage is that the electricity 12,12' to power the elevator system 10 is at least partially supported on the cabin drives 3,3' or on the counterweight drives 6,6',7,7'.

The cabin guides 3, 3' and the counterweight guides 6, 6', 7, 7' form a self-supporting structure for carrying the cabins 1, 1', the counterweight 2, 2' and for carrying lifting components such as the drives 4, 4' and/or the electricity 12, 12' and for fixing the conveyor fixing points 50, 50'. This self-supporting structure has minimal interfaces to the building, such as the fixing clamps of the guide rails.In addition to the cabin guides 3, 3' and the counterweight guides 6, 6', 7, 7' respectively, the self-supporting structure has horizontal carriers 22, 22' in addition to the cabin guides 3, 3' and 7' respectively. A first horizontal carriers 22 is located near a first wall 111 above the first cabin guides 3 and/or the first pair of counterweight guides 6, 6'. A second horizontal carriers 22' is located near a first wall 112 above the second cabin guides 3' and/or the second pair of counterweight guides 7, 7' respectively.The manufacturer may, however, use a number of different methods to determine the arrangement of lifting components and the design of the self-supporting structure, and may also use other lifting components not described here, such as speed limiters, position markers, etc., on the self-supporting structure.

It is preferable to access cabins 1, 1 through floor doors 9, 9', which are floor doors 9, 9' on second walls 113, 114 in shaft 11, which second walls 113, 114 are different from the first walls 111, 112. In the versions of a lift system 10 as shown in Figures 1 to 4, the cabin guide rails 3, 3' and counterweight guide rails 6, 6', 7, 7' respectively, with counterweights 2, 2' and drives 4, 4' are mounted close to the first two walls 111, 112, while access to the cabins 1,1' above floor doors 9, 9' is provided on two second walls 113, 114.

Figure 5 shows an embodiment of a modernized lifting system 10 where an existing engine room M is converted into at least one escape room 8; Figure 5a shows the elevator before the modernization where an engine room M is located above shaft 11; Figure 5b shows the elevator after the modernization where an escape room 8 is provided in shaft head 11' for at least one cabin 1.1; the embodiment of a modernized elevator system 10 according to Figure 5b corresponds to those according to Figures 1 to 4, so that reference is made to these parts of the description.

Err1:Expecting ',' delimiter: line 1 column 812 (char 811)

Claims (14)

1. Lift installation (10) with at least two cages (1, 1') arranged one above the other in vertical travel direction in a shaft (11), at least one cage guide rail (3, 3') for guiding the cages (1, 1'), a counterweight (2, 2') for each cage (1, 1'), a drive (4, 4') for each cage (1, 1') and conveying means (5, 5') for connecting the drives (4, 4') and cages (1, 1'), characterised in that the drives (4, 4') are arranged near different first walls (111, 112) in the shaft (11), at least one counterweight guide rail (6, 6', 7, 7') is provided for each counterweight (2, 2') and that the counterweights (2, 2') and the counterweight guide rails (6, 6', 7, 7') are arranged near the first walls (111, 112) in the shaft (11).
2. Lift installation (10) according to claim 1, characterised in that the cage guide rail (3, 3') is arranged near a first wall (111, 112) in the shaft and/or that a pair of cage guide rails (3, 3') is arranged near the first walls (111, 112) in the shaft (11).
3. Lift installation (10) according to claim 2, characterised in that the drives (4, 4') are supported on a pair of cage guide rails (3, 3') and two pairs of counterweight guide rails (6, 6', 7, 7').
4. Lift installation (10) according to one of claims 1 to 3, characterised in that the drives (4, 4') are arranged in the shaft (11) at substantially the same height and/or that the drives (4, 4') are supported on the cage guide rail or rails (3, 3') or the counterweight guide rails (6, 6', 7, 7').
5. Lift installation (10) according to claim 1 or 4, characterised in that each drive (4, 4') of a cage (1, 1') is arranged substantially above the counterweight (2, 2') of this cage (1, 1') and/or that the drives (4, 4') are supported on ends of the cage guide rail or rails (3, 3') or counterweight guide rails (6, 6', 7, 7').
6. Lift installation (10) according to one of claims 1 to 5, characterised in that electrical means (12, 12') are supported on the cage guide rail or rails (3, 3') or the counterweight guide rails (6, 6', 7, 7') and/or that conveying means fixing points (50, 50') are fastened to the cage guide rail or rails (3, 3') or the counterweight guide rails (6, 6', 7, 7').
7. Lift installation (10) according to one of claims 1 to 5, characterised in that the cage guide rail or rails (3, 3') or the counterweight guide rails (6, 6', 7, 7') as well as horizontal beams (22, 22') form a self-supporting structure.
8. Lift installation (10) according to one of claims 1 to 7, characterised in that the access to the cages (1, 1') is effected by way of storey doors (9, 9'), which storey doors (9, 9') are arranged at second walls (113, 114) in the shaft (11) different from the first walls (111, 112).
9. Lift installation (10) according to one of claims 1 to 8, characterised in that the cages (1, 1') have 1:1 or 1:2 slinging.
10. Lift installation (10) according to one of claims 1 to 9, characterised in that at least one diversion space (8) for at least one cage (1, 1') is provided, which diversion space (8) is arranged in the shaft head (11') and/or in the shaft base (11").
11. Method of operating a lift installation (10) with at least two cages (1, 1') arranged one above the other in vertical travel direction in a shaft (11), at least one cage guide rail (3, 3') for guiding the cages (1, 1'), a drive (4, 4') for each cage (1, 1'), which drives (4, 4') are arranged near different first walls (111, 112) in the shaft (11), conveying means (5, 5') for connecting the drives (4, 4') and cages (1, 1'), a counterweight (2, 2') for each cage (1, 1'), and at least one counterweight guide rail (6, 6', 7, 7') for each counterweight (2, 2'), which counterweights (2, 2') and the counterweight guide rails (6, 6', 7, 7') are arranged near the first walls (111, 112) in the shaft (11), wherein the cages (1, 1') are entered by way of storey doors (9, 9') arranged at second walls (113, 114) in the shaft (11) different from the first walls (111, 112).
12. Method of modernising a lift installation, characterised in that at least two cages (1, 1') arranged one above the other in vertical travel direction are mounted in a shaft (11), with at least one cage guide rail (3, 3') for guiding the cages (1, 1'), a drive (4, 4') for each cage (1, 1'), which drives (4, 4') are arranged in the shaft (11) near different first walls (111, 112), conveying means (5, 5') for connecting the drives (4, 4') and cages (1, 1'), a counterweight (2, 2') for each cage (1, 1'), and at least one counterweight guide rail (6, 6', 7, 7') for each counterweight (2, 2'), which counterweights (2, 2') and the counterweight guide rails (6, 6', 7, 7') are arranged near the first walls (111, 112) in the shaft (11),
13. Method according to claim 12, characterised in that at least one diversion space (8) for at least one cage (1, 1') is provided, which diversion space (8) is arranged in the shaft head (11') and/or in the shaft base (11").
14. Method according to claim 13, characterised in that an existing engine room is converted to at least one diversion space (8) for at least one cage (1, 1').