HK1120013B - Elevator with two superimposed cars in one shaft - Google Patents

Description

The invention relates to an elevator with at least two overlapping elevator cabins, which are vertically accessible in a shaft.

An elevator consists at least of a lift cabin, which is vertically traversed in a shaft and takes passengers to a desired floor of a building. To perform this task, the elevator usually has at least the following elevator components: a drive, rolling roller, traction elements, a counterweight, and a pair of rails to guide the lift cabin and a counterweight.

The power train is a power train that is used to carry passengers in the elevator. The power train is usually powered by an electric motor, which drives a drive train directly or indirectly in friction with a train element. The drive train can be a belt or a rope. It is used to suspend and support the lift train and the counterweight, both of which are suspended so that their gravity acts in opposite directions along the train element.

In elevator construction, the optimal use of the shaft volume is becoming increasingly important. Especially in high-rise buildings with a high level of building utilization, the most efficient way to manage the passenger volume is to aim for a given shaft volume. This goal can be achieved firstly by an optimal space-saving arrangement of the elevator components, which creates space for larger elevator cabins, and secondly by elevator concepts that allow the vertical procedure of several independent elevator cabins in one shaft.

EP 1 329 412 describes a lift with an upper cab and a lower cab moving in the same shaft. A drive for the upper cab and a drive for the lower cab are arranged horizontally in a shaft head so that the axes of rotation of the drive rollers are vertically aligned. The upper and lower cab are connected by means of a counterweight.

WO 2006/065241 describes a lift with several cabins in the same shaft. The cabins are connected to counterweights by means of supporting materials. The suspension and lengths of the supporting materials can be chosen so that the counterweights collide before the cabins can collide.

EP 1 489 033 is a known elevator with at least two elevator cabins superimposed on each other in the same shaft. Each elevator cabin has its own drive and counterweight. The drives are located close to the first and second shaft walls and the counterweights are also each below the respective drive on drive or holding ropes near the first or second shaft walls. The axis of the drive discs are perpendicular to the first and second shaft walls. The two independently drivable elevator cabins ensure a high conveying power. The positioning of the drive shaft in the first or second shaft walls makes a separate machine room and allows a compact arrangement of the drive elements in the shaft.

The present invention is intended to further improve the arrangement of elevator components for the vertical operation of several elevator cabins in one elevator shaft.

The above mentioned problem is solved by the invention according to the definition of independent patent claim.

The lift of the invention has at least two overlapping lifting cabs in a shaft, which are vertically conducive and each has its own drive, counterweight and traction device, fixed in the area of the shaft head such that one drive is fixed to a first shaft wall and another drive to an opposite second shaft wall, each having at least one drive wheel. At least one rolling coil is attached to a first drive wheel and is positioned on a second or first shaft wall opposite that drive above the counterweight attached to that drive wheel. The traction device is directed from the front of the rolling coil to the drive wheel and is attached to the front of each lift. A first rolling coil is attached to the front of each lifting coil.

The advantage of the lift of the invention lies in the space-saving arrangement of the drives in the shaft head near the first and second shaft walls. In addition, the tractor is moved from the first shaft side to the second shaft side between the drive and the first overhead roller in an otherwise unused space when changing sides in the shaft head above the lift cabin, saving space. Finally, the counterweight can be easily suspended below the first overhead roller.

It is preferable to guide a tractor through the drive shaft and the first rolling coil over the lifting cabin in such a way that the tractor forms a sharp angle with the third and fourth shaft walls. This angle is usually not greater than 20°.

The advantage of this embodiment of the invention lies in the space-saving arrangement of the counterweights in the shaft between the cab guides and the third and fourth shaft walls.

The lift is usually suspended as an upper or lower cylinder. The lift is, for example, suspended as an under-flask from the drive shaft through the lift to the second cylinder. From the second cylinder, the lift is then moved upwards from the second cylinder to the third cylinder under the upper cylinder and from there upwards to a first cylinder of the second cylinder. The second cylinder is followed by the second cylinder and the third cylinder is moved upwards from the first cylinder of the second cylinder.

The advantage of this embodiment of the invention is that, by suspending the lifting cabin as a bottle, smaller traction moments are sufficient for the operation of the lift and, accordingly, smaller and more economical drives can be used.

The advantage of the lift is that it has four rolls on which the counterweight is suspended in the form of a bottle, and the tractor is then led from the first roll down to the fourth roll and from there up again to a second fixed point of the tractor.

The advantage of this embodiment of the invention is that, by suspending the counterweight as a bottle, smaller traction torques are sufficient for the operation of the lift and, accordingly, smaller and more economical drives can be used.

It is preferable that the fixed points assigned to a train vehicle are on the same side of the assigned lift cab.

The advantage of this embodiment of the invention lies in the simpler installation of the fixing points of the traction devices. The mere proximity of the two fixing points of the traction device facilitates the installation of the same by the installer.

Preferably, the traction device is a belt that is passed through the drive shaft and at least the first, second, third and fourth pulleys, only one side of the belt is in contact with the drive shaft and pulleys and the belt is passed between the drive shaft, the pulleys and its fixed points essentially without twisting.

The advantage of this design is the simple use of belts with a one-sided structured surface such as ribs, teeth or wedges. Since the guidance of the traction device is largely torsion-free, it is possible to guide the belts through the drive and the rolls of the axle in a uniform manner. This allows a unilateral intervention of the structuring in the drives and the rolls of the axle without twisting the belt around its longitudinal axis. The belt has two dimensions for traction direction, a first dimension with a relatively wide non-rotating extension and a second dimension with a relatively thin cross-section.

The advantage is that the drives are located in the shaft head area, where the drives are fixed at different levels so that the traction equipment above the lifting cabin is directed between a drive unit and an associated first transformer without conflict. A first drive unit and its associated first transformer are fixed at a first level and a second drive unit and its associated first transformer are fixed at a second level above or below the first level. Accordingly, the traction equipment of a first and second lifting cabin are fixed at two different levels.

The advantage of this embodiment of the invention lies in the space-saving arrangement of the drives and the first rolls of the elevator, and in the fact that the traction equipment is able to run above the lift cabin without any conflict, i.e. without contact.

It is preferable to have the drives in the shaft head area, with the drives fixed at the same level.

The advantage of this embodiment of the invention lies in the space-saving arrangement of the drives and the first rolls of the first gear adjacent to each other in the shaft head, which ensures a minimum shaft head height.

Preferably, the first and second drives are fixed on a common support or alternatively, the drives are fixed on each support.

The advantage of this embodiment of the invention is the simple, flexible and space-saving arrangement of the drives in the shaft head.

The advantage of the lift is that it has sliding doors and cabin doors, with the sliding doors consisting of two sliding elements and the cabin doors consisting of more than two sliding elements.

The advantage of this embodiment of the invention is that it provides sufficient space to position the counterweight of a lift cab near first or second shaft walls between the guide rails of the lift cab and third or fourth shaft walls.

The combination of the elements of the invention described above, the positioning of at least two drives, the rolls and the counterweights and the resulting largely torsion-free guidance of the traction equipment, particularly in the case of belts, results in a compact, space-saving and yet highly flexible arrangement of the lifting components in the lift shaft.

The following illustrations and drawings illustrate and describe in greater detail the invention, showing: Figure 1Side view of an elevator design with two lifting cabins, two drives, two drives, two traction devices and several pulleys;Figure 2Side view of an elevator design with two lifting cabins, two drives, two drives, two traction devices and several pulleys;Figure 3Side view of an elevator design with two lifting cabins, two drives positioned in front of the cabin guide rails, two drives, two traction devices, several cabin guide rails, two counterweights, two weight guide rails, two opposite and opposite doors;Figure 4Side view of an elevator design with two traction devices positioned in front of the cabin guide rails, two drive discs, two traction devices, several cabin guide rails, two counterweights, two weight guide rails, two opposite and opposite doors;Figure 4Side view of an elevator design with two positive guide rails, one behind the cabin guide rails and one behind the cabin guide rails.Two drive wheels, two traction devices, two counterweights, two counterbalancing guides, a four-part cabin door and a shaft-side door;Fig.5Schematic side view of an elevator arrangement according to the invention with two lifting cabins, each suspended as a bottom or top-flap, two drives, two drive wheels, two traction devices, several balance balls, two counterweights and two counterbalancing guides;Fig.6Satistical sides of an elevator arrangement according to the invention with two lift cabins, each suspended on more than one top-flap, two drives, two under-cranks, two weight-bearing wheels, two transverse gearboxes, two transverse gearboxes, two transverse gearboxes, two transverse gearboxes, two transverse gearboxes, two transverse gearboxes, two opposite gearboxes;Fig.7Satistical sides of an elevator with two lift cabs, each suspended on more than one top-flap, two traction devices, two transverse gearboxes, two transverse gearboxes, two transverse gearboxes, two transverse gearboxes, two counter-cranks, two transverse gearboxes, two transverse gearboxes, two transverse gearboxes, and the opposite gearboxes;two counterweights and two counterweight guides; andFig.8Sketch side view of an elevator arrangement according to the invention with two lifting cabins, the upper one at a time and the lower one suspended as a top, two drives, two drive discs, two traction devices, several rolling mills,

Figures 1 and 2 show an elevator for at least two lift cabins, each with its own drive A1, A2 and running vertically independently of each other. The drives A1, A2 are positioned in the shaft head above the lift cabins near the first and second shaft walls. The first and second shaft walls are those opposite shaft walls that do not have a shaft door. The drives A1, A2 are located on two different levels so that the two traction devices Z1, Z2 on which the lift cabins A1, A2 are suspended are conflict-free and can be driven without mutual contact.

The following table shows the position of the A1, A2 drives in the shaft, which allows not only the aforementioned positioning of the A1, A2 drives at different levels, but also the positioning of the drives at the same level. This position is not shown for space reasons alone, as a side view of the A1, A2 drives lying behind each other is only of limited significance.

The advantage is that the drives A1, A2 are mounted on one support, giving a wide range of freedom in the orientation of the drives A1, A2. In another advantageous variant, the drives A1, A2 are mounted on the same support, an upper drive A1 on the top of the support and a lower drive A2 on the bottom of the support. This arrangement of the drives A1, A2 is very compact and has the advantage of installing as little space as possible in the shaft head.

The drive A1, A2 together with a drive 1a, 1b to drive the tractor Z1, Z2 form a drive module. The drive 1a, 1b is designed to accommodate single or multiple tractor Z1, Z2. The tractor Z1, Z2 are preferably belts such as wedge-ribbed belts with one-sided ribs that intervene in one or more drive-side recesses.

The tractor Z1, Z2 in Figure 1 is configured as a cylinder trailer with at least one lifting cab and at least one counterweight suspended as a cylinder. The tractor Z1, Z2 is guided from a first fixing point 13a, 13b to a second fixing point 14a, 14b in such a way that it is guided by several rolling coils 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b and the drive train 1a, 1b essentially without twisting.

The tractor Z1, Z2 is then driven from a first fixed point 13a, 13b to the first rolling coil 2a, 2b in such a way that the counterweight assigned to each lifting cab is suspended as a bottle on the reels 3a, 3b. The tractor Z1, Z2 runs from the first fixed point 13a, 13b down a first or second shaft wall to the reel 3a, 3b, encircles it from the inside to the outside at an angle of about 180° and leads again along a first or second shaft wall up to the first rolling coil 2a, 2b. This first construction 2a, 2b is located in relation to the assigned propulsion shaft 1a, 1a, near the first or second shaft. The construction of the first or second shaft is so complex that the structure of the first or second shaft is flexible enough to allow the mounting of the two modules in the first shape. The mounting of the reel is flexible and flexible, so that the mounting is rigid and the mounting is flexible, and the mounting is located in a flexible position, so that the front and rear of the assembly are in a more flexible position.

From the first rolling coil 2a, 2b, the tractor Z1, Z2 is now led to the drive 1a, 1b along the shaft deck and circles this drive 1a, 1b from the inside out at an angle of 90 to 180°. In the course of the next rolling, the tractor Z1, Z2 produces a cylindrical suspension of the lifting cabin below the drive 1a, 1b with the second 4a, 4b and third 5a, 5b rolling coil, by leading the tractor Z1, Z2 down from the drive 1a, 1b along the first or second shaft rolling coil to the second turn point 4a, 4b. The second rolling coil 901, Z2 circles the tractor, which turns from 4a to 5a at an angle of about 14°. The second rolling coil then turns from 5a to 5a, and then turns in a straight line from 90a to 5a, and then turns from 5a to 5a, and then turns in a straight line from 90a to 5a, and then turns in a straight line from 5a to 5a, then turns in a straight line from 90a to 5a, and then turns in a straight line from 5a to 5a, then turns in a straight line from 90a to 5a, and then turns in a straight line from 5a to 5a.

A control disc 6a, 6b is optional part of the drive module, which allows the adjustment, increase or decrease of the angle of rotation of the tractor at the drive unit 1a, 1b in order to transfer the desired traction forces from the drive unit 1a, 1b to the tractor A1, A2.

From Figures 2 to 4, it is shown that the two axes, consisting of the drives A1, A2 and the rolls 2a and 2b, are at a sharp angle to the third and fourth shaft walls. The third and fourth shaft walls are those opposite walls in the shaft which have at least one shaft door 8. This results in the assigned counterweights 12a, 12b, suspended as a bottle at the first fixing point 13a, 13b and the first rolls 2a, 2b, being positioned between the cabin rails 10 of the lifting cab 7a, 7b and the third and fourth positioned shafts. The front part of such a drive of the A1, 12a and 12a rolls 2a, which are located in a flat position opposite the position of the 11a and 12a rolls 12a, is arranged in opposite positions.

In addition, the axis formed by the two rolls 5a, 5b and 4a, 4b on which the lifting cab 7a, 7b is suspended is close to the cab guides 10. This reduces the moments transmitted by the suspension forces from the traction medium Z1, Z2 via the lifting cab 7a, 7b to the cab guides 10.

Figures 3 and 4 show two variants of the above-described embodiment of the invention, in which the suspension axes, formed by the rolls 4a, 4b and 5a, 5b, on which the lifting cabin 7a, 7b is suspended, are either both in front of the cabin guide rails 10 or one in front or behind the cabin guide rails 10. The technician may, depending on the space conditions in the shaft, prefer one or the other solution, the former being symmetrical suspension in relation to the moment exerted by the lifting cabin 7a, 7b on the cabin guide rails 10. The distance from the suspension axis of the lifting cabin 7a, 7b to the cabin guide rails 10 is kept to a minimum and the moment exerted by the lifting cabin is reduced to a minimum, as shown in the example above, and the other two variants are not available.

The space-saving positioning of at least one counterweight 12a, 12b between the cabin guide rails 10 and a third or fourth shaft wall can be achieved by a special arrangement of the cabin door 9. In normal operation of the elevator, the lift cabins 7a, 7b are placed at a floor level with a floor support and the cabin doors 9 are opened together with the shaft doors 8 to allow the transfer of passengers from the floor to the lift cabin 7a, 7b. When the cabin doors 9 are opened, their sliding sliding elements into the sound room and take up a certain amount of otherwise unworkable sliding space. If the elevator door 9 is not open due to two significantly different sliding elements, at least four such as the electrical or other sliding elements 9a or 12a will be used to keep the cabin moving freely in the opposite direction, but in the case of the telescopic transmission, the cabin will be able to be seen to move more freely in the opposite direction.

The manufacturer has various possibilities for hanging the lift cabs 7a and 7b according to the invention.

Figures 5 and 6 show an arrangement with two lift cabins 7a, 7b suspended as a bottle. In Figure 5 the upper lift cabin 7a is suspended as an upper bottle and the upper lift cabin 7b as a lower bottle. This suspension variant is particularly advantageous if a minimum convergence between the lift cabins is desired, for example if the floor spaces are small. According to Figure 6, both lift cabins 7a, 7b are suspended as upper bottles. This variant is then preferable when the space conditions in the shaft pit are tight.

Figures 7 and 8 show a suspension with a 1:1 suspension of the upper lifting cab 7a. The lower lifting cab 7b is suspended as a bottle according to the invention. Depending on the space conditions in the lift shaft, the lower lifting cab 7b can be suspended as an upper or a lower bottle.

Claims (20)

1. Lift with at least two lift cages (7a, 7b) which are disposed one above the other, in a shaft, which cages are vertically movable and each have an own drive (A1, A2), each an own counterweight (12a, 12b) and each an own traction means (Z1, Z2), wherein these drives (A1, A2) are fixed in the region of the shaft head in such a manner that one drive (A1) is fixed at a first shaft wall and a further drive (A2) is fixed an opposite second shaft wall and each have at least one drive pulley (1a, 1b), wherein at least one first deflecting roller (2a, 2b) is associated with one drive (A1, A2) and is positioned on a second or first shaft wall, which is opposite this drive (A1, A2), above the counterweight (12a, 12b) associated with this drive (A1, A2), and that the traction means (Z1, Z2) is led from the counterweight (12a, 12b) over the deflecting roller (2a, 2b) to the drive pulley (1a, 1b) and from there to the lift cage (7a, 7b), characterised in that associated fixing points (13a, 13, 14a, 14b) of a traction means (Z1, Z2) lie on the same side of the lift cage (7a, 7b).
2. Lift according to claim 1, characterised in that a respective first deflecting roller (2a, 2b) is associated with each of the two drives (A1, A2).
3. Lift according to any one of the preceding claims, characterised in that at least one traction means (Z1, Z2) is so guided by the drive pulley (1a, 1b) and the first deflecting roller (2a, 2b) above the lift cage (7a, 7b) that the traction means (Z1, Z2) forms an acute angle with third and fourth shaft walls.
4. Lift according to claim 3, characterised in that the angle is at most 20°.
5. Lift according to any one of the preceding claims, characterised in that the lift cage (7a, 7b) is guided by cage guide rails (10) and that the counterweight (12a, 12b) is positionable between cage guide rails (10) and third and fourth shaft walls.
6. Lift according to any one of the preceding claims, characterised in that a first lift cage (7a, 7b) is suspended in block-and-tackle manner.
7. Lift according to claim 6, characterised in that the lift cage (7a, 7b) is suspended in block-and-tackle manner at second deflecting rollers (4a, 4b) and third deflecting rollers (5a, 5b) and that the traction means (Z1, Z2) is led between the drive pulley (1a, 1b) and a first fixing point (13a, 13b) via second deflecting rollers (4a, 4b) and third deflecting rollers (5a, 5b).
8. Lift according to any one of the preceding claims, characterised in that the counterweight (10) is suspended in block-and-tackle manner at a fourth deflecting roller (3a, 3b), wherein the traction means (Z1, Z2) is led from the first deflecting roller (2a, 2b) downwardly to the fourth deflecting roller (3a, 3b) and from there back up to a second fixing point (14a, 14b) of the traction means (Z1, Z2).
9. Lift according to any one of the preceding claims, characterised in that the traction means (Z1, Z2) consist of at least one cable or double cable.
10. Lift according to any one of claims 1 to 8, characterised in that the traction means (Z1, Z2) is a belt.
11. Lift according to claim 10, characterised in that the traction means (Z1, Z2) is a belt structured at one side.
12. Lift according to claim 10 or 11, characterised in that the traction means (Z1, Z2) is a cogged belt, ribbed belt or V-belt.
13. Lift according to any one of the preceding claims, characterised in that the belt is guided by the drive pulley (1a, 1b) and at least first deflecting rollers (2a, 2b), second deflecting rollers (4a, 4b), third deflecting rollers (5a, 5b) and fourth deflecting rollers (3a, 3b), and is disposed in contact with the drive pulley (1a, 1b) and deflecting rollers (2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b) only at one side of the belt and that the belt is guided between the drive pulley (1a, 1b), the deflecting rollers (2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b) and its fixing points (13a, 13b, 14a, 14b) to be substantially free of twisting.
14. Lift according to any one of the preceding claims, characterised in that the drives (A1, A2) are disposed in the region of the shaft head, wherein the drives (A1, A2) are fastened at different levels.
15. Lift according to any one of the preceding claims, characterised in that the drives (A1, A2) are located in the region of the shaft head, wherein the drives (A1, A2) are fastened at the same level.
16. Lift according to any one of the preceding claims, characterised in that the drives (A1, A2) are positioned on the same beam.
17. Lift according to any one of the preceding claims, characterised in that the drives (A1, A2) are each positioned on a respective beam.
18. Lift according to any one of the preceding claims, characterised in that the lift has shaft doors (8) and a cage door (9), wherein the shaft doors (8) consist of two sliding elements and the cage door (9) consists of more than two sliding elements.
19. Lift according to any one of the preceding claims, characterised in that the lift cages (7a, 7b) are guided by cage guide rails (10), wherein the two drive modules and the two associated deflecting modules each lie on a respective side of the connecting line of the cage guide rails (10).
20. Lift according to any one of the preceding claims, characterised in that the lift cages (7a, 7b) are guided by cage guide rails (10), wherein the two drive modules and the two associated deflecting modules each lie on the same side of the connecting line of the cage guide rails (10).