DE10064850C2 - Traction sheave elevator with a backpack-style elevator car - Google Patents

Abstract

The lift cabin moves along guide rails (3) through a counterweight (5) driven by a drive (7) comprising a motor (8), drive pulley (9) for the support cables (6), and brake (10). The axial length of the drive is greater than its diameter and the motor and drive pulley are arranged coaxial with each other. The supporting steel wire cables have a nominal diameter of about 8 mm or less and the diameter of the drive pulley is about 32 cm. The axial length of the drive pulley can be sufficient to house at least five support cables axially side by side.

Description

The invention relates to a traction sheave elevator Elevator car that can be moved along guide rails, with a counterweight also guided on rails, with in Cross section round suspension elements on which the elevator car and the Counterweight attached without a pulley in a backpack design are, and with at least one motor, a traction sheave for the suspension element and a brake formed drive, which in the upper Area of the elevator shaft between the shaft wall and the room, which the elevator car needs in its uppermost position, and / or is arranged in a vertical extension of this area, the axis of the traction sheave being approximately horizontal and simultaneous parallel to the neighboring shaft wall and / or to the neighboring one Cabin wall is oriented.

Such a traction sheave elevator is from the Japanese Utility model publication JP 4-50 297 known. The advantage this arrangement is that a separate machine room for the drive of this elevator is not required. Furthermore, the Backpack construction advantageous because it is inexpensive because it is with relatively few parts and even without deflection disks. Further results in an arrangement of the traction sheave on a parallel to the  horizontal shaft lying adjacent shaft wall a favorable Wrapping and guidance for the suspension elements.

In this known arrangement, however, the disadvantage is relative large space requirement of the entire drive, which is known in this Solution is caused by the fact that the axis of the drive motor is arranged perpendicular to the axis of the traction sheave, so that a appropriate deflection gear is required.

It was therefore already claimed in EP 0 631 967 A2, in particular 16, a backpack-type traction sheave elevator proposed, where the axis of the traction sheave and the motor are perpendicular to the adjacent shaft wall and the adjacent cabin wall are arranged and the entire drive unit so flat is designed so that it in the space between the shaft wall and cabin or vertical continuation of this area fits. there but are under the elevator car in a complex way pulleys provided and without pulleys would be a relatively large shaft head height required.

A traction sheave elevator is known from DE 197 18 626 C1, at which the drive motor including braking device in an area next to or to the side above the shaft door opening voltage should be arranged so that accessibility for Mon day and maintenance work is available. So it acts is a traction sheave elevator of another type, in which consists of an engine, a traction sheave and a brake formed drive at least to a significant extent inside the elevator shaft between the shaft wall and the space that the elevator car occupies in its uppermost position necessary, or in a vertical extension of this area is arranged, but in the cross section of the shaft wall of the door opening protrudes. This requires additional dimensions took in and at the elevator shaft.

There is therefore the task of a traction sheave elevator to create the type mentioned, in which the advantages of a rucksack-less elevator in a backpack design is retained, in which the entire drive within the elevator shaft can be arranged and the shaft head height above the top position of the elevator car can be low.

To solve this apparently contradicting task is the characterized at the beginning characterized that the axial length of the drive is greater than its diameter and that the motor and the traction sheave are arranged coaxially to one another are. This results in a relatively slim long one Drive unit, the diameter planes transverse or are arranged at right angles to the adjacent shaft wall but due to their relatively small diameter one accordingly  has a small footprint and in particular a relatively small one Height claimed. Also required for an arrangement in the shaft head this drive so there is only a small height, so that the Well head height desirably advantageously low can be held. Common parts and con structural units of lifts in backpack construction including the usual suspension means are used.

WO 99/43589 is also used for an elevator of a different type Deflection rollers under the elevator car have been a relatively long time Drive engine known in the upper area of the shaft, however it is not a backpack-style elevator and above all, special ropes, namely flat ropes, are used as suspension elements or belts required to ensure sufficient traction is transmitted and yet the traction sheave with a relative small diameter can be executed.

Because of the simple drive and its space-saving arrangement is advantageously possible that the suspension steel wire ropes with a nominal diameter of about 8 mm or less are. This allows a correspondingly small diameter Traction sheave and yet the use of common wire ropes as Suspension means, so that the usual known calculation methods can be applied. This also helps one overall inexpensive, space-saving traction sheave elevator ready to deliver.

The diameter of the traction sheave can be about 36 cm or 32 cm or be less. The torque requirement is correspondingly low on the one hand and the space requirement on the other.

The axial length of the drive can be at least twice as large in particular about 2 1/2 times to 3 times or more than that Traction sheave diameter. The falls accordingly slim entire drive is off and its space requirement is correspondingly small  between cabin and shaft wall or in one if necessary vertical continuation range of this distance between cabin and shaft wall.

The traction sheave can be directly on the output of the motor arranged and the drive is designed in particular gearless his. Because the torque requirement of the traction sheave by the aforementioned Measures can be kept low, a transmission can be saved become.

The axial length of the drive pulley can be chosen so that it Space for at least five, in particular six suspension elements or Has hoisting ropes axially next to each other. This allows for small Traction sheave diameter the transmission correspondingly higher Load capacities, so that despite the small diameter of the suspension element Elevator cabin allows a satisfactory payload.

The slim design of the Drive allows different attachments within the Elevator shaft.

For example, to attach the drive in the Elevator shaft two parallel and at least in some areas one clear distance between the carrier can be provided and the drive can be the distance between the carriers or bridge the gap in the assembled position. This results in good statics for mounting the drive and a simple one Introduction of the forces emanating from it into the shaft walls, there the ends of the beams are embedded in the shaft walls or when sunk in the ceiling of the shaft on these walls can be stored. Instead of reaching into wall openings, you can the brackets can also be attached to brackets attached to the shaft walls are anchored. So in any case it results from the two parallel beams and those attached to these two beams Drive a compact, inherently stable, rigid and simple  Construction that also allows easy assembly.

The two spaced-apart supports can therefore be attached to each they attached drive to each other to a construction be connected before or after assembly is formed.

The carrier used to hold the drive in the elevator shaft can be roughly horizontal and parallel to the drive directly adjacent shaft wall in the elevator shaft and Fastening points or feet of the drive can be on the top or on the underside or - for profiled beams - on in Cross section of essentially horizontally oriented flanges or Legs of this carrier be attached in the use position. In particular, an attachment to the top of the carrier or on the top of flanges or legs results in a large one Security because the force application is based on pressure.

A further embodiment of the invention can consist in that the feet or attachment points of the drive with at least one Plate or several cross struts are connected, which in turn in particular releasably on the carriers, consoles or the like are attached. This will cause greater stiffening of this Construction unit achieved from the drive and its attachment.

As additional stiffening of the beams that receive the drive can be provided on these attacking cross-connections. This is particularly common with relatively large elevator shafts appropriately long straps useful to the stiffening and Improve load capacity.

A simplification of assembly and possible disassembly can can be achieved if at least one of the two carriers is parallel slidable to itself and thereby the distance between the two carriers can be enlarged so that the drive at one  Assembly or disassembly between the carriers is movable. A drive mounted on the carrier can then either from below pulled up over the straps or lowered between them become. Conversely, one of the carriers can also use these hanging drive from above between the first apart other moved carriers and then assembled or at a Disassembly between the straps.

The diameter of the traction sheave can already be used for the above explained dimensional ratios equal to or less than theirs be axial dimension and in particular about half of the axial Drive pulley length. In this way, the Traction sheave enough space for several arranged side by side Suspension means, especially those in their training and flexibility particularly cheap round wire ropes with relatively little Diameter or cross section.

Another convenient way to attach the drive can be that the drive with its attachment place directly or through one or more consoles on the the shaft wall adjacent to the drive, in particular by means of approximately anchors engaging horizontally in this shaft wall. This avoids beams running across the shaft become.

But it is also possible that the drive on or under a carrier is attached and an additional support on the shaft wall and / or on at least one or two guide rails for securing is provided against tipping. In this way, the Fastening or suspension of the drive within the shaft and preferably in the space between the cabin and the shaft wall Space-saving and yet effective design.

Overall, the drive can be directly or expediently indirectly attached to the shaft wall (s), what opposite  the solution of Japanese utility model publication 4-50997 has the advantage that the guide rails for the elevator car or the counterweights are not additionally loaded. It is but also possible that the drive on one at the upper ends the guide rails of the elevator car and / or the counterweight is arranged in particular by means of supports and / or a plate, if, for example, beams, brackets or wall mounts should be avoided within the shaft.

Especially when combining one or more of the above Characteristics and measures described results in a traction sheave elevator with a drive in the uppermost part of the elevator shaft, the only requires a small head height there and still due to its slim shape well between cabin and Shaft wall or in the continuation of such a space Can be accommodated so that the elevator car is also in the upper one Area can be moved close to the ceiling of the shaft. At the same time, the advantageous backpack design is used, that requires few parts and is structurally simple and yet also a high load-bearing capacity is permitted.

Below are exemplary embodiments of the invention based on the Drawing described in more detail. It shows in partly schematic Presentation:

Fig. 1 is a side view of a traction sheave elevator according to the invention in backpack design, the elevator shaft in longitudinal section and the drive are shown in front view, the drive has a relatively small diameter in relation to its axial length and in the upper region of the shaft in one Space is arranged, the width of which is somewhat smaller than the clear distance between the shaft wall and the cabin wall immediately adjacent to it,

Fig. 2 shows a cross-section of the elevator shaft with plan view of the cabin and its drive,

Fig. 3 is an enlarged and diagrammatic illustration of the mounting of the drive on two parallel horizontal beams, which are attached inside the shaft in the upper region parallel to the cage wall and the adjacent shaft wall,

Fig. 4 shows a modified embodiment of the drive attachment on two parallel beams, said loading attachment to attack provide the drive to the facing flanges of the beams,

Fig. 5 is a representation corresponding to Fig. 4 approximately a further modified embodiment of the attachment of the drive to two parallel supports and

Fig. 6 an attachment of the drive to a console, which is anchored on the shaft wall adjacent to the cabin wall, partly at its vertical area, partly at a wall recess.

Called a whole by 1, designated traction sheave elevator, or also referred to as "lift 1", comprises an elevator car 2 which along in FIG. 1 for simplicity, omitted in Fig. 2, however, indicated guide rails 3 in a lift shaft 4 upwards and downwards movable , A counterweight 5 can also be seen in FIG. 1, which, like the elevator car 2 , is guided on rails in a known manner and performs an opposite movement to the elevator car 2 .

The elevator car 2 and the counterweight 5 hang on suspension elements 6 , preferably wire ropes, which are round in cross section, and are free of deflection pulleys and have a backpack design.

For the movement of the elevator car 2 , an overall designated 7 drive is provided, which is formed from a motor 8 , a traction sheave 9 for the suspension means 6 and a brake 10 and especially in FIGS. 3 to 6 also with regard to various fastening options within the Elevator shaft 4 is shown.

Referring to FIG. 1, this drive is 7 in the upper area of the elevator shaft 4 between the shaft wall 4 a and the space that requires the elevator car 2 in its uppermost position or in a vertical extension of this area. It can be seen in Fig. 1 clear that thus this drive 7 in its lateral extent to the clearance between the shaft wall 4 a and this immediately adjacent cabin wall 2 a limited, and of course also a safety can keep distance from these walls. A relatively low shaft head above the uppermost position of the elevator car can thus suffice, although the elevator car 2 in FIG. 1 has not yet reached its uppermost position.

The central axis of the traction sheave 9 and thus also of the motor 8 is oriented approximately horizontally and at the same time parallel to the adjacent shaft wall and also to the adjacent cabin wall 2 a. So that the drive 7 fits into this intermediate space, it is of relatively slim design according to FIGS. 2 to 6 and its axial length is greater than its diameter. Furthermore, the motor 8 , the traction sheave 9 and in the exemplary embodiment also the brake 10 are arranged coaxially to one another or one behind the other. For example, Fig. 3 illustrates that the axial length of the drive 7 is greater than the largest diameter of this drive 7 .

The support means 6 , which are expediently designed as steel wire ropes, can have a nominal diameter of approximately 8 mm or less, so that a relatively small diameter of the traction sheave 9 of, for example, approximately 36 cm or 32 cm or even less can be realized, which is the overall slim design of the entire drive 7 benefits.

In the exemplary embodiment, the axial length of the drive 7 is more than twice as large, in particular approximately two and a half to approximately three times or even several times larger than the relatively small diameter of the traction sheave 9 already mentioned. This leads to an elongated, slender shape of the drive 7 with a correspondingly small outside diameter, which in this way fits well into the clear space between the shaft wall 4 a and the adjacent parallel cabin wall 2 a and allows a relatively small dimension of this distance or space.

The exemplary embodiments according to FIGS. 2 to 6 also show that the traction sheave 9 is arranged directly on the output of the motor 8 , the entire drive 7 being able to be gearless overall. It is therefore a simple, relatively light and therefore less prone to failure 7 .

The axial length of the traction sheave 9 is selected in the exemplary embodiment so that it has space for several suspension elements or hoisting ropes 6 axially next to one another. For example, it can accommodate five or six or possibly more such suspension elements 6 next to one another, so that correspondingly large loads are also made possible. However, the diameter of the traction sheave 9 is only approximately the same or even smaller than its axial dimension and can be, for example, approximately half the axial length of the traction sheave 9 . This is useful because there is enough space in the axial direction to accommodate the drive 7 and its traction sheave 9 , while this space is limited in the transverse direction in that the distance between the cabin 2 and the shaft wall 4 a should be as small as possible.

Especially in FIGS. 3 to 6 different possibilities are shown, such as the drive 7 directly or indirectly on the shaft wall (s), be it the shaft wall 8 a running transversely to the shaft wall 4 a or also attached to the shaft wall 4 a itself can:
According to FIGS. 3 to 5, two parallel and at least partially clear spacings between carriers 11 having different cross sections can be provided for fastening the drive 7 in the elevator shaft 4 . The drive 7 bridges the distance or space between these supports 11 in the assembled position and thereby contributes to the stiffening of this arrangement. These supports 11 can run beneath the manhole cover 12 through the manhole 4 or can also be fastened directly to the underside of the manhole cover 12 or even completely or partially sunk into the latter. In a manner not shown, the ends of the supports can come to rest on the shaft walls 4 b or can engage in these shaft walls 4 b in order to preferably introduce the forces absorbed by them into these shaft walls 4 b. The Fig. 3, it U-profiles according to Fig. 3 or double T-carrier according to Fig. 4 and 5, or other profiles, by the respectively attached to them drive 7 to 5 illustrate that the two spaced-apart carriers 11 are, can be connected to one another to a Konstruktionsein unit, which is formed before assembly or only after assembly in the shaft 4 .

Fig. 3 shows an arrangement in which the support 11 for holding the drive 7 can be mounted approximately horizontally and parallel to the shaft wall 4 a directly adjacent to the drive 7 in the elevator shaft 4 , with the fastening points or feet 13 of the drive 7 on attack the top of this support 11 , so that the statics leads to a pressure load at this point. In this case, these beams 11 run at a distance below the shaft cover 12 .

FIGS. 4 and 5 show solutions in which the fixing points or feet 13 of the actuator 7 are a of this carrier 11 is fixed to the cross-section is substantially horizontally oriented lower flanges 11, wherein the drive case depends 7 according to Fig. 4 downward while it is shown in Fig. 5 in such a position on flanges 11 a.

In contrast, it would also be possible that the drive 7 is screwed directly to the underside of the carrier 11 or its flanges 11 a.

In Fig. 5 it is indicated at the same time that the feet or attachment points 13 of the drive 7 can be connected to a plate 14 , which in turn is in particular releasably attached to the carriers 11 or to a console or the like. This is expedient if the distance between the carriers 11 is too large for the width of the fastening point 13 on the drive 7 . In addition, such an additional plate 14 can increase the rigidity and stability of the entire arrangement and also connect the two supports 11 even better.

In Fig. 3 it is indicated that as additional stiffening of the drive 7 receiving carrier 11 on this cross-engaging connections 15 can be provided, which is particularly useful for relatively long beams 11 , the dynamic by the drive 7 and the movable cabin 2 be charged.

Fig. 6 shows an arrangement in which the drive 7 with its attachment points 13 is attached via a bracket 16 to the shaft wall 4 a adjacent to the drive. The shaft wall 4 a has a recess 17 in this area, so that the bracket 16 can be anchored partly in this recess 17 with vertical screws 18 , partly on the inside of the shaft wall 4 a with horizontal screws 19 or other fastening elements. The recess 17 thus enables a very stable attachment of the console 16 and thus also of the drive 7 to the shaft wall. The drive 7 is accessible from the outside of the shaft 4 since the recess 17 is continuous. If necessary, a niche is also sufficient as a recess 17 .

In a manner not shown in detail, the drive 7 could also be fastened on or under only one support 11 in the manner shown and additionally described in the figures with the aid of two supports, and it could be an additional support on the shaft wall 4 a and / or 4 b and / or be provided on at least one or both guide rails 3 for securing against tipping.

Finally, the drive 7 could also be arranged in a manner not shown on one of the upper ends of the guide rails 3 of the elevator car 2 and / or the counterweight 5, for example by means of supports and / or a plate.

The traction sheave elevator 1 with an elevator car 2 , which can be moved along guide rails 3 , with a counterweight 5 also guided on rails and with suspension elements 6 or lifting cables which are round in cross section, is designed in a backpack design, that is to say the elevator car 2 and the counterweight 5 hang on the suspension means which in turn is arranged on a traction sheave 9 of a drive 7 formed from motor 8 , traction sheave 9 and brake 10 . This drive 7 is in the upper area of the elevator shaft 4 between the immediately adjacent shaft wall 4 a and the car 2 or between the shaft wall 4 a and the space that the elevator car 2 requires in its uppermost position or in a vertical extension of this area. The axis of the traction sheave 9 runs approximately horizontally and at the same time parallel to the adjacent shaft wall 4 a and to the adjacent cabin wall 2 a. The axial length of the drive 7 is greater than its diameter and the motor 8 and the traction sheave 9 are arranged coaxially with one another, so that an angular gear between the motor 8 and the traction sheave 9 can be avoided.

Claims (17)

1. traction sheave elevator ( 1 ) with an elevator car ( 2 ) which can be moved along guide rails ( 3 ), with a counterweight ( 5 ) also guided on rails, with suspension elements ( 6 ) which are round in cross section and on which the elevator car ( 2 ) and the counterweight ( 5 ) are attached without a pulley in a backpack design, and with a drive ( 7 ) formed at least from a motor ( 8 ), a traction sheave ( 9 ) for the suspension means ( 6 ) and a brake ( 10 ) the upper area of the elevator shaft ( 4 ) between the shaft wall ( 4 a) and the space that the elevator car ( 2 ) needs in its uppermost position, and / or in a vertical extension of this area, the axis of the traction sheave ( 9 ) is oriented approximately horizontally and at the same time parallel to the adjacent shaft wall ( 4 a) and / or to the adjacent cabin wall ( 2 a), characterized in that the axial length of the drive ( 7 ) is greater than its diameter and that the motor ( 8 ) and the traction sheave ( 9 ) are arranged coaxially to one another. 2. traction sheave elevator according to claim 1, characterized in that the support means ( 6 ) are steel wire ropes with a nominal diameter of about 8 mm or less. 3. traction sheave elevator according to claim 1 or 2, characterized in that the diameter of the traction sheave ( 9 ) is about 36 cm or 32 cm or less. 4. traction sheave elevator according to one of claims 1 to 3, characterized in that the axial length of the drive ( 7 ) is at least twice as large, in particular about 2 1/2 to 3 times or more than the diameter of the traction sheave ( 9 ). 5. traction sheave elevator according to one of claims 1 to 4, characterized in that the traction sheave ( 9 ) is arranged directly on the output of the motor ( 8 ) and the drive ( 7 ) is in particular gearless. 6. traction sheave elevator according to one of claims 1 to 5, characterized in that the axial length of the traction sheave ( 9 ) is selected so that it has space for at least five, in particular six suspension means or hoisting ropes ( 6 ) axially next to one another. 7. traction sheave elevator according to one of claims 1 to 6, characterized in that the diameter of the traction sheave ( 9 ) is equal to or smaller than its axial dimension and in particular is approximately half the axial length of the traction sheave ( 9 ). 8. traction sheave elevator according to one of claims 1 to 7, characterized in that the drive ( 7 ) is directly or indirectly attached to the or the shaft walls ( 4 a, 4 b). 9. traction sheave elevator according to one of claims 1 to 8, characterized in that for the fastening of the drive ( 7 ) in the elevator shaft ( 4 ) two parallel and at least partially a clear distance between the carrier ( 11 ) are provided and the drive ( 7th ) bridges the distance or space between the supports ( 11 ) in the assembled position. 10. traction sheave elevator according to one of claims 1 to 9, characterized in that the two spaced carriers ( 11 ) are connected to each other to form a constructional unit by the drive ( 7 ) attached to them. 11. traction sheave elevator according to one of claims 1 to 10, characterized in that the support for holding the drive ( 7 ) serving ( 11 ) approximately horizontally and parallel to the drive ( 7 ) directly adjacent shaft wall ( 4 a) in the elevator shaft ( 4 ) are mounted and that fastening points or feet ( 13 ) of the drive ( 7 ) on the top or on the bottom or - with profiled beams - on flanges ( 11 a) or legs of these beams ( 11 ) which are essentially horizontal in cross section Use position are attached. 12. traction sheave elevator according to one of claims 1 to 11, characterized in that the feet or fastening points ( 13 ) of the drive ( 7 ) with at least one plate ( 14 ) or in particular a plurality of cross struts are connected, which in turn in particular releasably on the carriers ( 11 ), Consoles or the like are attached. 13. traction sheave elevator according to one of claims 1 to 12, characterized in that as additional stiffening of the drive ( 7 ) receiving carrier ( 11 ) on these cross connections ( 15 ) are provided. 14. traction sheave elevator according to one of claims 1 to 13, characterized in that at least one of the two carriers ( 11 ) is displaceable parallel to itself and thereby the distance between the two carriers ( 11 ) can be increased such that the drive ( 7 ) assembly or disassembly between the carriers ( 11 ) is movable. 15. traction sheave elevator according to one of claims 1 to 14, characterized in that the drive ( 7 ) with its attachment points ( 13 ) directly or via one or more brackets ( 16 ) on the shaft wall adjacent to the drive ( 4 a) in particular by means of approximately anchors engaging horizontally in this shaft wall. 16. traction sheave elevator according to one of the preceding claims, characterized in that the drive ( 7 ) is fixed on or under a support ( 11 ) and an additional support on the shaft wall ( 4 a, 4 b) and / or on at least one or two Guide rails ( 3 ) are provided to secure against tipping. 17. traction sheave elevator according to one of the preceding claims, characterized in that the drive ( 7 ) on one at the upper ends of the guide rails ( 3 ) of the elevator car ( 2 ) and / or the counterweight ( 5 ) in particular by means of carriers ( 11 ) and / or a plate ( 14 ) is arranged.