HK1122784A - Lift with two lift cages disposed one above the other in a 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 usually has a lift cabin, which is vertically traversed in a shaft and takes passengers to transport them to a desired floor of a building. To perform this task, the elevator usually has at least the following elevator components: a drive with a motor and a drive shaft, steering wheels, traction devices, a counterweight, as well as a pair of guide rails to guide the elevator cabin and a counterweight.

The engine generates the power needed to transport the passengers in the lift. Usually, an electric motor performs this function. It drives a drive train that is in friction contact with a tractor directly or indirectly. The tractor can be a belt or a rope. It serves to suspend and support the lift and the counterweight, both of which are suspended so that their gravitational forces act in opposite directions along the train.

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.

The elevator is known from EP 1 489 033 to have at least two elevator cabins in the same shaft, one on top of the other. Each elevator cabin has its own drive and counterweight. The drives are located near the first and second shaft walls and the counterweights are also hung below the respective tractor drive near the first or second shaft walls. The axes of the drive shafts are perpendicular to the first and second shaft walls. The two independently drivable elevator cabins ensure a high conveying power. The positioning of the drives in the shaft near the first or second shaft walls makes a separate engine room fluid and allows a comparative arrangement of the drive elements in the separate shaft package.

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 cabins, which are vertically accessible independently of each other in a shaft. Each lifting cabin has its own drive with at least one engine and at least one drive, its own counterweight and at least one means of traction. One drive is fixed to a first shaft wall and another drive is fixed to an opposite second shaft wall. The drive legs are drivable from the lifting cabins and the motors of the drives are arranged vertically over the assigned drive.

The advantage of the lift lies in the space-saving arrangement of the drives on the first and second shaft walls. The drives are in the range of the light profiles of the counterweights and therefore do not occupy any additional space in the shaft head or shaft pit.

It is preferable to alternate the drives on opposite shaft walls at two different shaft heights, with the spacing between two drives of overlapping lift cabs preferably at least one cab height.

The advantage of the lift lies in the flexible and easy positioning of any number of drives and the associated lift cabins in the same shaft. In contrast, with a conventional arrangement of the drives in the shaft head, the number of drives that can be installed is limited by the space available in the shaft head.

It is advantageous to have the axles of the drives parallel to the first and second shaft walls.

The advantage of the lift is that the traction devices in contact with the drives are directly conducive from first shaft walls to second shaft walls without horizontal change of direction.

It is preferable that the lifting cabs are suspended in the form of a bottle and each has at least two rolling coils which are mounted in the lower part of the lifting cabs.

The advantage of the lift lies in the 2:1 suspension of the lift cabins and the counterweights.

It is advantageous to have two cabin guide rails for the lift cabins and to have counterweights between the cabin guide rails and the first or second shaft walls.

The advantage of the lift lies in the simple and space-saving arrangement of the counterweights.

It is preferable that the tractor be made up of at least one rope, double-wire or belt, and that the support structure of the tractor be made of aramid or vectorial fibres.

The advantage of the lift lies in the use of low-cost standard traction equipment and the use of high-strength synthetic fibres, which are characterised by an improved tensile strength to weight ratio compared with traditional steel fibres.

The advantage is that the belts are structured on one side, such as single-sided gears or wedge-ribbon belts. Such belts are advantageously guided by the drives and at least the first, second and third windings, with only one side of the belts being in contact with the drives and windings.

The advantage of the lift is that one-sided structured belts are manufactured as standard and are inexpensive. Thanks to the 180° rotation between the drive shaft and the first roll, these belts are always evenly bent over the rolls and discs. This increases the life of the belts and reduces the maintenance costs of the lift.

It is preferable to have two cabin guide rails which form a connecting plane and the traction equipment, the drives and the first and second rolling stock of the assigned cabin are on one side of the connecting plane.

The advantage of the lift lies in the use of drive discs and rolls with several parallel grooves, which can accommodate several traction units, allowing several traction units in a lift cabin to be easily run parallel to each other.

Optionally, the lifting cabs are preferably guided by two cab guide rails, which form a connecting plane and the traction equipment, drives, and first and second associated rolling stock of the associated lifting cab are located on either side of the connecting plane.

The advantage of the lift is the symmetrical suspension in the centre of gravity of the lift cabs.

Preferably, each drive is fixed on a transverse support attached to the cab guides and/or counterbalancing guides.

The advantage of the lift according to the invention is to fix the drives as easily as possible in the chessboard and to use existing structures.

The following illustrations and drawings illustrate and describe in greater detail the invention, showing: Fig.1Sketch side view of an elevator arrangement with two lifting cabins, two drives, two drives, two traction devices and several cranks;Fig.2Sketch side view of an elevator arrangement with two lifting cabins and two drives, two drives, two traction devices and several cranks, each on one side of the connecting plane formed by two cabin rails;Fig.3Sketch side view of an elevator arrangement with two lifting cabins and two drives, two drives, two traction devices and several cranks, each on either side of the connecting plane formed by two cable lines;Fig.4Sectional view of an arrangement on the eight-sided transverse direction.

Figure 1 shows an elevator with at least two lifting cabins 7a, 7b, each with its own drive A1, A2 and running vertically independently of each other. The drives A1, A2 are positioned sideways on first and second shaft walls. The first and second shaft walls are those opposite shaft walls that do not have shaft doors. The drives A1, A2 are located alternately on opposite shaft walls at two different shaft heights, usually at a distance of at least one height in the vertical direction. The drives A1, A2 define their position at the same time as the highest point accessible from the elevator, but the height of the 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7

The drive A1, A2 shall have an M1, M2 motor as shown in Fig. 4, preferably an electric motor, a drive 1a, 1b, and optionally a control 13a, 13b, which allows the angle of rotation of the tractor Z1, Z2 around the drive 1a, 1b and the horizontal distance of the tractor Z1, Z2 to the drive A1, A2, to the lifting cab to be set to 7a, 7b or counterweight 12a, 12b.

The M1, M2 engine is located vertically above the drive shaft 1a, 1b. This arrangement allows the drive A1, A2 to be positioned in the light projection of the counterweights 12a, 12b between the lift cabins 12a, 12b and the first and second shaft walls. This makes the drives A1, A2 drivable from the lift cabins 7a, 7b and can thus be installed in a space of the shaft not otherwise needed.

The engine M1, M2 of the drive A1, A2 drives the tractor Z1, Z2 via drive 1a, 1b. The drive 1a, 1b is designed to accommodate one or more tractor Z1, Z2. The tractor Z1, Z2 are preferably belts such as wedge-ribbed belts with one-sided ribs that penetrate one or more drive disc side recesses.

At least two lifting cabs 7a, 7b and two counterweights 12a, 12b are suspended from the traction equipment Z1, Z2 as a cylinder. The lifting cabs have at least one first and one second rolling coil 2a, 2b, 3a, 3b which are fixed in the lower part of the lifting cabs 7a, 7b. These rolling coils 2a, 2b, 3a, 3b have one or more grooves on the outer circumference designed to accommodate one or more traction equipment Z1, Z2. The rolling coils 2a, 2b, 3a, 3b are therefore suitable for guiding and contacting traction equipment Z1, Z2 and the latter. The lifting cabs 7a, 7b are suspended as a sub-cylinder.

In an optional embodiment, the roll coils 2a, 2b, 2c, 3a, 3b, 3c are located in the upper part of the lifting cab 7a, 7b, 7c. As described above, the lifting cab 7a, 7b, 7c is suspended as a top cylinder.

In the upper part of counterweights 12a, 12b there is a third rolling coil 4a, 4b which is also suitable for holding one or more traction devices Z1, Z2 in the same way as the rolling coils 2a, 2b, 3a, 3b. Accordingly, counterweights 12a, 12b are preferably suspended from the third rolling coil 4a, 4b as a top cylinder below the associated drive A1, A2.

The traction device Z1, Z2 is directed from a first fixing point 5a, 5b to a second fixing point 6a, 6b via several rolling coils 2a, 2b, 3a, 3b, 4a, 4b and the drive unit 1a, 1b from the first shaft wall to the second shaft wall. The first fixing point 5a, 5b is located opposite the assigned drive A1, A2 at approximately the same shaft height in the vicinity of a first or second shaft wall. The second fixing point 6a, 6b is located in the vicinity of the assigned drive A1, A2 on a second or first shaft wall.

From the first fixing point 5a, 5b, the tractor Z1, Z2 runs down a first or second shaft wall to the second rotor 3a, 3b, turns it from outside to inside at an angle of about 90° and leads to the first rotor 2a, 2b. The tractor Z1, Z2 turns this first rotor 2a, 2b from inside to outside again at about 90° and is then led up the lift cab 7a, 7b to the drive shaft 1a, 1b and turns it from inside to outside at about 150°. Each adjustment of the option switch 13a, 13b can vary the angle of turn in a range from 90° to 180°. The tractor Z1, Z2 is then turned from the first to the second rotor 6a, 4a, 6a or 4a, and then turned upwards from the first to the second rotor 6a, 6a or 4b, and turned back to the second rotor.

A control panel 13a, 13b is optional part of the drive A1, A2. This control panel 13a, 13b allows the angle of rotation of the tractor at the drive 1a, 1b to be adjusted, increased or decreased in order to transfer the desired traction forces from the drive 1a, 1b to the drive Z1, Z2. Depending on the distance of the control panel 13a, 13b to the drive 1a, 1b, the distance of the control panel Z1, Z2 to the drive A1, A2 to the lifting unit 12a, 12b or to the lifting unit 7a, 7b can also be adjusted. This ensures that the tractor's traction forces are not in conflict between the control panel 1a, 1a and 2a in the first and second transition.

In Fig. 2 the lifting cabs 7a, 7b are guided by two cabin guide rails 10.1, 10.2. The two cabin guide rails 10.1, 10.2 form a connection plane V passing approximately through the centre of gravity S of the two lifting cabins 7a, 7b. In the embodiment shown, the lifting cabs 7a, 7b are suspended eccentrically. The traction devices Z1, Z2 and the associated guide means, such as steering coils 2a, 2b, 3a, 3b, 4a, 4b and drive discs 1a, 1b, are located in this suspension arrangement on one side of the connection plane V, where the steering coils are 4a, 4b, not reflecting the visibility shown in Fig. 2, i.e. all the components mentioned above are located between either the sides of a link or between the V and 7a and the connection.Third or fourth shaft walls are shaft walls with at least one shaft door 9 and opposite shaft walls. The advantage is that the distance y of the drawbars Z1, Z2 and the connecting plane V is approximately equal. The drawbars Z1, Z2 of a lift cab 7a, 7b lie alternately on one or the other side of the connecting plane V. Thus, the moments produced by the eccentric rise of the lift cabs 7a, 7b act oppositely.

The counterweights 12a, 12b are each guided by two counterbalancing rails 11a.1, 11a.2, 11b.1, 11b.2. The counterweights 12a, 12b are positioned on opposite shaft walls between the cabin guides 10.1, 10.2 and first or second shaft walls. The counterweights are conveniently suspended at their centre of gravity S on the means of transport Z1, Z2. As the lift cabins 7a, 7b are suspended eccentrically, the counterweights 12a, 12b are laterally displaced near the third and fourth shaft walls.

The axles of the drive shafts 1a, 1b and the rolls 2a, 2b, 3a, 3b, 4a, 4b are parallel to the first or second shaft walls. In the version shown, the components mentioned above are such that they can accommodate, drive or, in the case of the drive shaft 1a, 1b, also drive four parallel traction units Z1, Z2. To accommodate the traction units Z1, Z2, the drive shafts 2a, 2b, 3a, 3b, 4a, 4b and the drive shafts 1a, 1b have four specially designed contact shafts, which in the case of ropes, for example, are in the form of a frame or, in the case of belts, are also in the form of four flat or flat-shaped contact shafts, or they can be placed on a common contact surface with three rolls.

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In normal operation of the lift, the lift cabs 7a, 7b shall be placed at a level level with the floor and the cab doors 8 and the shaft doors 9 shall be opened to allow the transfer of passengers from the floor to the lift cabs 7a, 7b and vice versa.

Fig. 3 shows an alternative suspension arrangement with centrally suspended lifting cabs 7a, 7b. The traction equipment Z1, Z2 is guided by the rolls 2a, 2b, 3a, 3b, 4a, 4b and the drives 1a, 1b on either side of the connecting plane V. The advantage is that the suspension is symmetrically arranged with respect to the connecting plane V. Since in this case the centre of gravity of the suspension essentially coincides with the centre of gravity of the lifting cab 7a, 7b, no additional torques affect the cab guides 10.1, 10.2.

In this centre suspension of the lifting cabs 7a, 7b, the associated rolls 2a.1, 2a.2, 2b.1, 2b.2, 3a.1, 3a.2, 3b.1, 3b.2 and the drives 1a.1, 1a.2, 1b.1, 1b.2 shall consist of at least two rolls to the left and right of the coupling plane V. The rolls 4a, 4b of counterweights 12a, 12b shall also consist of two rolls to the left of the coupling plane V, but are not shown in Fig.3 for the sake of clarity. In this example, the upper rolls 2a, 3a, 4a and the drives 1a of the lifting cabs 7a are located in a position to the left of the coupling plane V. The first and second connections are arranged in a small distance from the centre of the coupling plane X. X. 7a and 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a. 7a 7a. 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a 7a

Here again, the counterweights 12a, 12b are conveniently suspended in their centre of gravity on the traction media Z1, Z2 between the cabin guide rails 10.1, 10.2 and the first or second shaft walls. Since the lifting cabins 7a, 7b are now centrally suspended, the counterweights 12a, 12b are also located in a middle area of the first and second shaft walls.

Fig. 4 shows a drive A1 fixed on a transverse support 19 attached to a cab guide rail 10.1 and/or the counterbalance rail 11a.1, 11a.2. In Fig.4 further details can be identified: the M1 engine with a drive train 1a and an optional controller 13a perpendicularly placed underneath it, the third transverse coil 4a on which the counterbalance 12a hangs and the lifting cab 7a in the background.

Optionally, the drives A1, A2 can also be fixed directly to the shaft walls, thus avoiding the transverse bearings 19.

Claims (22)

1. Elevator with at least two overlapping lifting cabs (7a, 7b) which are vertically accessible independently in one shaft and each of which has its own drive train (A1, A2) with at least one engine and at least one drive train (1a, 1b), each has its own counterweight (12a, 12b) and each has at least one means of traction (Z1, Z2), one drive train (A1) is fixed to a first shaft and another drive train (A2) is fixed to an opposite second shaft wall and the drives (A1, A2) are overlapping by the lifting cabs (7a, 7b), characterised by the engines of the drive train (A1, A2) being located above the assigned drive train (1a, 1b).
2. The lift described in claim 1 is characterised by the alternate positioning of the drives (A1, A2) on opposite first and second shaft walls at two different shaft heights.
3. The height of the lift shall be at least one cab height.
4. Lift according to one of the above requirements, characterised by the axes of the drives (1a, 1b) being parallel to the first and second shaft walls.
5. Lift according to one of the above claims, characterised by the suspension of the lift cabins (7a, 7b) as a bottle.
6. The lift described in claim 5 is characterised by the fact that the lift cabs (7a, 7b) each have at least two rolling coils (2a, 2b, 3a, 3b) mounted in the lower part of the lift cabs (7a, 7b).
7. The lift described in claim 5 is characterised by the fact that the lift cabs (7a, 7b) each have at least two rolling coils (2a, 2b, 3a, 3b) mounted in the upper part of the lift cabs (7a, 7b).
8. Lift according to claim 7, characterised by the means of traction (Z1, Z2) being directed to first fixed points by the drives (1a, 1b) and the first and second rolls (2a, 2b, 3a, 3b).
9. Lift according to one of the above claims, characterised by the counterweights (12a, 12b) suspended in a cylinder below the associated drives (A1, A2).
10. Lifting according to claim 9, characterised by the presence of third rolling coils (4a, 4b) on the counterweights (12a, 12b) fixed in the upper part of the counterweights (12a, 12b).
11. Lift according to claim 10, characterised by the means of traction (Z1, Z2) being directed from the drives (1a, 1b) via the third overhead contact winding (4a, 4b) to second fixing points (6a, 6b).
12. Lifting according to claim 11, characterised by the fact that the counterweights (12a, 12b) are each guided by two counterbalance guides (11a.1, 11a.2, 11b.1, 11b.2).
13. Lift according to one of the above claims, characterised by the lift cabs (7a, 7b) being guided by two cab guides (10) and the counterweights (12a, 12b) being positioned between cab guides (10) and first or second shaft walls.
14. Lift according to one of the above requirements, characterised by means of a drawbar (Z1, Z2) consisting of at least one rope or double rope.
15. Lift according to one of the requirements 1 to 13, characterised by the means of traction (Z1, Z2) consisting of at least one belt.
16. The 'C' value is the value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C' value of the 'C'.
17. The belt shall be designed to be fitted with a retractor.
18. Lift according to claim 15 or 17, characterised by the straps being dental straps or wedge-ribbed straps.
19. Lift according to claim 14, 17 or 18, characterised by the straps being guided by the drive shafts (1a, 1b) and at least the first (2a, 2b), second (3a, 3b) and third (4a, 4b) rolls, only one side of the straps being in contact with the drive shafts (1a, 1b) and rolls (2a, 2b, 3a, 3b, 4a, 4b) and the straps being rotated 180° about their respective longitudinal axis between the drive shafts (1a, 1b) and the first rolls (2a, 2b).
20. Elevator according to one of the above claims, characterised by the lifting cabs (7a, 7b) being guided by two cab guides (10) forming a connecting plane and the traction equipment (Z1, Z2), the drives (1a, 1b) and the first and second rolling stock (2a, 2b, 3a, 3b) of the assigned lifting cab (7a, 7b) being located on one side of the connecting plane.
21. Elevator according to one of the claims 1 to 19, characterised by the lift cabs (7a, 7b) being guided by two cab guide rails (10), these cab guide rails (10) forming a connecting plane and the traction equipment (Z1, Z2), the drives (1a, 1b) and the first and second associated rolling stock (2a, 2b, 3a, 3b) of the assigned lift cab (7a, 7b) are located on either side of the connecting plane.
22. Lift according to one of the above requirements, characterised by each drive (A1, A2) being fixed on a transverse support (19) attached to the cab guides (10) and/or counterbalance guides (11a.1, 11a.2, 11b.1, 11b.2).