EP1566358A1 - Machine room-less traction sheave elevator - Google Patents

Abstract

The machine room-less friction driven elevator has a counterweight and drive as well as at least three cable pulleys (2,3,5), a cable pulley (1) fitted on the counterweight (14), and a drive pulley (114), all installed on one side of the track of the elevator car (10) and in one plane. The rotational pivots of the cable pulleys installed in the shaft head, the cable pulley on the counterweight and the drive pulley are orientated parallel to one another, and the haulage gear (12) has at least two cables.

Description

The present invention relates to a machine roomless Traction sheave elevator according to the preamble of the claim 1.

Engine roomless elevators already have in Europe and worldwide found a wide distribution. It is hereby aimed Approaches to reducing manhole dimensions implement. In the theoretically favorable case here is the Length of the shaft defined only by the sum of Hoisting height, the height of the car and the required Crossings and buffer strokes. For this it is necessary to build modules the elevator drive and / or the elevator control, conventionally above or below the carriageway of the Car are arranged, as far as possible in addition to the Position the carriageway of the car.

From EP 0 719 724 B1 a traction sheave elevator with a Elevator car extending along elevator guide rails moves, a counterweight that runs along from Counterweight guide rails moved, a set of elevator ropes, where the elevator car and the counterweight are suspended in the hoistway, and a prime mover unit, one connected to the engine and driving pulley acting on the elevator ropes, known. Here, the prime mover unit is in one Engine room arranged in the elevator shaft or in the elevator shaft and its shaft wall is arranged. Although there the elevator drive next to the carriageway of the car is positioned, it is considered disadvantageous that the drive units provided there very much space need, so that, for example, the same car size compared to conventional lifts larger shaft widths and / or depths are required or additional Shaft wall recesses are necessary. In particular, can this lead to the usual shaft cross-sectional dimensions after ISO 4190-1 can not be met.

From WO 01/27016 A1 is a drive for an elevator with a ropeway car in a vertical position extending shaft is movable up and down, as well with a traction sheave for the ropes of the car and a parallel to the traction sheave drive motor arranged known, the drive motor by means of drive belt connected to a pulley. The pulley is arranged coaxially with the traction sheave. in this connection the drive is designed so that the drive motor with a braking device acting on the motor shaft provided is. A disadvantage of this structure is considered that he builds big.

There are also known solutions in which the drive units only partially next to the carriageway to be ordered. Such training proves itself as mechanically relatively expensive.

The current solutions have the common disadvantage that the required shaft length can not be reduced in this way can that the shaft neither the storey height of the uppermost Floor still the depth of the foundation under the lowest Overhanging floor.

The object of the invention is the widest possible reduction the required shaft volume for engine roomless Elevators, in particular taking into account the Elevator Directive 95/16 / EC. This is in particular required To indicate shelters, which are according to the existing Standards EN 81-1 must be maintained permanently, as well on assemblies of the drive or the controller, the conventionally above or below the roadway of the car are arranged. This is conventionally Rebuilding valuable space that is wasted during normal operation remains. This space is to be minimized according to the invention.

The task is solved with a machine-room-less Traction sheave elevator with the features of the claim 1.

According to the invention, all components of the drive are realized or the controller, in known engine roomless Elevator concepts above or below the Lane of the car are arranged next to the carriageway to move the car.

It is by the combination of features according to the invention possible to use small rope diameter, which also the use of smaller pulleys is possible, the Quotient of rope diameter and rope diameter considerable Has an influence on the rope life. With a According to the invention possible reduction of the pulley diameter It is possible to use three pulleys in shaft heads conventional size next to each other and to arrange in a plane. The use of three pulleys in the shaft head allows a spatial separation of the up and down Rope strands, so that the rope course is purely vertical and thus regardless of the head. By the arrangement the provided in the shaft head three pulleys substantially in one level is the one needed in this level Space (that is, the space parallel to the adjacent Side wall) minimized. The same applies to the dimensioning the pulleys in their rotational axis direction.

Advantageous embodiments of the traction sheave elevator according to the invention are the subject of the dependent claims.

Conveniently, as support means three, four, five, six, seven, eight or more ropes with round cross section and a diameter smaller than 10 mm, in particular smaller 8 mm or less than 6.5 mm or less than 6 mm. at Use of such a number of parallel Ropes can be chosen correspondingly smaller rope cross sections without compromising the safety of the lift. By using ropes with a small one Diameter it is also possible to use pulleys to use according to small diameter.

According to the invention commercially available cost-effective limiter ropes, have rope diameters of 6 or 6.5 mm, usable as a suspension.

Advantageously, the diameter of the pulleys and / or the diameter of the traction sheave smaller than that Forty times a rope diameter. The quotient of rope pulley diameter and rope diameter has a significant influence on the life of steel wire ropes.

It is preferred that one of the pulleys in horizontal Direction a piece is pivotable, without doing the necessary Distance between car wall and shaft wall to enlarge. By this measure, a diagonal pull of the cable drive be downsized.

It also turns out to be cheap, this pivotable Pulley in horizontal direction slightly towards the car displaceable design, this also without the need to change the distance between car wall and Shaft wall to enlarge. This measure is used for Minimization of the diagonal pull of the rope drive.

Likewise, this role may be a bit deeper than the others two rollers are arranged so that even larger roller diameters can be used for the roles.

Appropriately, the traction sheave with a feeding higher coefficient of friction, in particular made of plastic. With this Measure the rope life can be extended Furthermore, noise emissions can be favorably influenced.

According to a particularly preferred embodiment of an inventive Traction sheave elevator are the pulleys in Shaft head and a counterweight rope end suspension attached to a frame, located next to the carriageway of the Car and extends over the roadway of the counterweight and essentially consists of a support, the attached to the shaft front wall and to the shaft rear wall is, or the guide rails of the counterweight and a guide rail of the car is attached. With this measure, the pulleys in the shaft basket and a rope end suspension in a particularly simple and cheaper Way in the shaft head substantially in one plane mountable. The attachment of said components to a common carrier proves to be particularly inexpensive and save space.

Conveniently, an opposite to the carrier Car-side cable end suspension and a speed limiter attached to a common receiving means, that at another car rail and / or a Shaft wall is attached.

According to the invention it is provided in particular that the height the shaft head substantially the floor height of the top accessible level corresponds, and that the normal drive of the car with people on a roof of the car prevented by an electrical safety device being on the car roof or stuck in the area the shaft head is arranged, and their sensors with running mats or plates, voltage measuring devices (DMS), light barriers, image or thermal imaging cameras or motion detectors Is provided. This safety device leaves only a ride with people on the car roof as a maintenance trip with shortened travel length, causing the car then when he is on a maintenance trip moves up, with a corresponding prescribed Safety distance to the shaft ceiling comes to a standstill. By this measure, a minimum shaft head height can be realized be added without the safety of operators Endanger maintenance work in the shaft head.

In a particularly advantageous manner, the depth of the pit is essentially not larger than the foundation depth of the building, whereby means are provided, which are any Ride the car when a person stays in the car Schachtgrube prevent, the funds in particular as electrical safety device are formed, whose Sensor technology with running mats or plates, a voltage measuring device (DMS), light barriers, image or thermal cameras or motion detectors is equipped. By This measure can correspondingly the safety of an operator during maintenance or installation work in the Pit pit at the same time implemented minimum dimensions the pit are guaranteed. In Particularly preferred embodiment is at least the door the lowest station of the elevator with a pit access control educated. By this measure is the safety of the elevator according to the invention further increased.

Conveniently, the car is with a door apron formed, the only one length of an unlocking zone corresponds, wherein further means for preventing a crash of persons during an emergency release is provided, wherein the device either opening the doors from inside the car only at approximate Flushing position of the elevator car in one stop allows and / or an apron part to be arranged on the car in a person's exemption at any Car seat position is to use. It can do this Apron part permanently arranged on the car and pushed out or be foldable or only in use be attached to the car.

In a particularly advantageous manner, the drive has a with the traction sheave cooperating electric motor, a Braking device and a countershaft, wherein the countershaft with a first, non-rotatably with a shaft of the electric motor connected counter gear, another, with the Traction sheave rotatably connected counter gear and a Transmission element for transmitting a rotation of the shaft is formed on the traction sheave. Such a trained Drive proves to be very robust and reliable, while being very small at the same time. Conveniently, can by means of the intermediate gear the required drive torque of the motor by a factor of, for example, 2 to 5 be reduced, resulting in a further significant reduction the size of the engine and the cost contributes. With However, at the same time this measure makes it possible to Keep the engine speed so low that engine noise becomes clear quieter than that of gear drives with standard industrial motors is. Alternatively, a disk-shaped Gearless drive of appropriate size can be used.

It is preferred that the brake disc of the braking device rotatably connected to the traction sheave, wherein the Support shaft of the traction sheave and the shaft of the electric motor are aligned parallel to each other, and those on the shaft and provided on the axle counter gears arranged to fly are. The measure to arrange the braking device so that they attack directly on the traction sheave can lead to the fact that there is no special safety-relevant requirements. One single transmission element for the countershaft, for example a belt or a chain, thus proves in the Practice as sufficient. As a result, the axial extent or width of the additional gear additionally minimizable.

The further provided parallel arrangement of the axes of rotation the traction sheave and the electric motor causes that Traction sheave and braking device above or beside the Electric motor can be arranged, whereby the resulting horizontal extension (in the axial direction of Motor shaft or traction sheave axis) of the drive further minimized is.

Another way to minimize the horizontal Extension of the drive is provided in the invention further provided Measure, the counter gear of the electric motor and to store the traction sheave with counter gear on the fly. Under flying storage here, accordingly the usual terminology, an axially one-sided storage the counter gear of the electric motor or the traction sheave understood with counter gear.

Advantageously, the drive and a control device are adjacent or arranged with each other, wherein the arrangement by separate devices, mounted on a common carrier Devices or devices grouped in a housing can be executed.

In addition to the control unit or instead of the control unit can also the complete elevator control or at least a part thereof be arranged in the shaft in the region of the drive. Advantageously, drive and control device are in the lower Area of the shaft at a height of 0.1 to 2.0 m arranged above a threshold of a lowermost shaft door. By this measure, by groundwater or Flood caused damage largely excluded become.

Conveniently, the car is self-supporting Car without separate catch frame and with the car floor integrated safety gears and pulleys executed.

In a particularly advantageous manner are plastic cables as suspension means provided, whose strength about the strength of steel wire ropes. Such plastic ropes are relatively flexible and favor the use smaller Pulley and pulley diameter so that the required Drive power of the drive can be minimized.

Figur 1

eine schematisch vereinfachte, perspektivische Ansicht einer bevorzugten Ausführungsform eines erfindungsgemäßen triebwerksraumlosen Treibscheibenaufzugs in einem Aufzugschacht,

Figur 2

eine schematische seitliche Ansicht eines Trägers an dem Seilrollen und Seilendaufhängungen vorteilhaft vorgesehen sind,

Figur 3

eine schematische Ansicht der Anordnung des erfindungsgemäßen Treibscheibenaufzugs in einem Aufzugsschacht von oben,

Figur 4

eine perspektivische Darstellung einer bevorzugten Ausführungsform eines im Rahmen des erfindungsgemäßen Aufzugs einsetzbaren Antriebs, und

Figur 5

eine seitliche Schnittansicht des Antriebs gemäß Figur 4.

The invention will now be explained with reference to the accompanying drawings. In this shows

FIG. 1

a schematically simplified, perspective view of a preferred embodiment of an inventive engine roomless traction sheave elevator in a hoistway,

FIG. 2

a schematic side view of a carrier are advantageously provided on the pulleys and Seilendaufhängungen

FIG. 3

a schematic view of the arrangement of the traction sheave elevator according to the invention in an elevator shaft from above,

FIG. 4

a perspective view of a preferred embodiment of an insertable in the context of the elevator according to the invention drive, and

FIG. 5

a side sectional view of the drive according to FIG. 4

A preferred embodiment of the invention Traction sheave elevator is designated 100 in Figure 1 in total. The elevator is in a shaft 102, in which a Car 10 with car doors 13a and 13b and a counterweight 14 via respective guide rails 10a, 10b, 14a, 14b moved up and down, arranged. The shaft points Shaft walls as well as a pit 104 and a shaft head 103 on. The roof of the car 10 is designated 10c.

The car 10 is over than a number of parallel Ropes trained suspension 12 with the counterweight 14 connected.

According to the illustrated embodiment, the ropes run 12 as follows:

A first end 12 a of the cables 12 is at one in FIG. 1 not shown suspension (in Fig. 2 denoted by 20) above the path of the counterweight 14 in the uppermost Part of the shaft attached. From the suspension 20 run the ropes 12 initially substantially vertically downwards and to a serving as a pulley pulley 1, the is rotatably provided on the counterweight 14. After appropriate Guide around the pulley 1 run the ropes 12 turn essentially vertically upward, where they open to meet a pulley 2 serving as a pulley. through the rope pulley 2, the ropes 12 are initially substantially deflected in a horizontal direction. The pulley 2 is immediately below (for the sake of clarity not shown) shaft cover rotatably arranged.

After a horizontal course the ropes hit one further, serving as a pulley pulley 3, through which they are directed substantially vertically downwards. The Length of the horizontal gradient is through the horizontal Spacing of the pulleys 2, 3 defined.

Below the shaft head area, passing through the top Anfahrbare floor is formed, for example, two, three, four, five or more meters below this level, a drive 15 is mounted on the shaft wall. The drive 15, as shown in particular in FIG. 4 is, an engine 112 and one behind a pulley 120 arranged traction sheave 114 on.

The subsequent to the deflection of the pulley 3 substantially vertically downwardly extending ropes 12 deflected at the traction sheave 114 by 180 °, so that they subsequently essentially vertically upward, where on a further, serving as a pulley pulley. 5 to meet. This pulley 5 in turn causes a deflection the ropes essentially vertically down. The pulley 5 is positioned slightly below the pulleys 2, 3, so that the horizontally extending between the pulleys 2, 3 Ropes are not hampered.

It can also be positioned laterally obliquely below the pulley 3 so again larger side roll diameter can be used in the shaft head.

The previously shown pulleys 1, 2, 3 and 5 and the traction sheave 114 are on one side of the shaft arranged laterally next to the carriageway of the car 10, as further explained below, in particular with reference to FIG. 3 becomes. The axes of rotation 1a, 2a, 3a, 5a of the pulleys 1, 2, 3, 5 and the traction sheave 114 are substantially parallel to each other, and substantially perpendicular to the side wall 102a of the hoistway 102, along the they are arranged. The arrangement of the pulleys 2, 3, 5 and the suspension 20 on a carrier will be below explained in more detail.

The as shown by the pulley 5 again substantially Ropes deflected vertically down now run to the bottom of the car 10 and are here by means of another pulley 6, which on the car 10th is rotatably mounted, extending substantially horizontally under the car.

The axis of rotation of the pulley 6 is substantially perpendicular to the axis of rotation of the pulley 5 (or the pulleys 1, 2, 3), so that the ropes on the roller 6 a deflection both (as mentioned) in the horizontal, as well in a direction perpendicular to the lateral shaft wall 102a, along which the pulleys 1, 2, 3, 5 are arranged are, experienced.

After their leadership below the car 10 meet the Ropes 12 on another, serving as a pulley pulley 7, by means of the ropes again in the vertical direction be directed above. The second ends of the ropes are on attached to a suspension 30, located in the area of a second lateral shaft wall 102b, which of the first side shaft wall 102a opposite is located. Especially can the suspension 30 via a support plate 31 at the guide rail 10b or attached to the shaft wall be. The axis of rotation of the pulley 7 runs in substantially parallel to the axis of rotation of the pulley. 6

The described pulleys or the traction sheave point one corresponding to the number of parallel ropes 12th selectable number of rope grooves.

To the next to the roadway of the car 10 as little space to consume, the drive 15 is particularly flatter Design and executed, as is clear from Figure 1, arranged next to the roadway of the counterweight 14. Under the drive 15 is a controller 80 or a controller arranged, with drive and control unit over the 104 designated pit are positioned. On the car roof is a safety device 81 for monitoring the shaft head and arranged on the bottom of the car a safety device 82 for monitoring the pit 104. Under the designated 13a Car door is arranged a car apron 90 and behind under the car a fold-out apron part 91st

In Figure 2 is a schematic side view of a carrier 200 shown, on which the pulleys 2, 3, 5 in particular favorably in a plane and with parallel axes can be mounted.

Further, on the carrier 200, the counterweight side Rope end suspension 20 is provided.

In Figure 2, only a part of the total cable course is the under Referring to Figure 1 has been described. One recognizes in particular the horizontal course of the ropes 12 between the pulleys 2 and 3.

As can also be seen in FIG. 2, the axes of rotation 2a, 3a, 5a of the pulleys 2, 3, 5 parallel to each other and perpendicular to the shaft wall 102a, which in the illustration 2 corresponds to the plane of the drawing, aligned.

In another advantageous embodiment, pulley 5 be turned in a horizontal direction a piece or be moved slightly towards the car to one side To minimize diagonal pull of the rope drive, without the intended shaft width is affected. Likewise Rope pulley 5 also lowered slightly and then further to be moved to the right, so that larger roll diameter if necessary can be used. In Figure 2 can be seen further the drive 15, which will be explained further as follows is, an electric motor 112 and a traction sheave 114th has as essential components. This drive 15 is also mounted on the shaft wall 102a.

The arrangement or configuration of the essential elevator components is again in a schematic in Figure 3 View from above.

One recognizes first the lateral shaft wall 102a and the this opposite lateral shaft wall 102b. In the Door areas 11a, 11b are elevator doors 13a, 13b, respectively shown, so that it is in the illustrated car total is a car with through-loading function.

Furthermore, the guide rails 10a can be seen in FIG. 3, 10b of the car and the guide rails 14a, 14b of the Counterweight 14.

Between the car 10 and the shaft wall 102b is on the guide rail 10b via a support plate 31 both a Speed limiter 85 as well as the second suspension cable suspension 30 arranged. Above the counterweight 14 detects one the pulley 1, the axis of rotation 1a for illustration is shown. Further to recognize are the Pulleys 2, 3, 5 and the pulley 120th

The pulleys 6, 7, which are arranged below the car are also visible. Appropriately, the Pulley 6 with respect to the car so far outward moved that she approximately protrudes into the plane, the through the pulley 2, 3, 5 arranged in the shaft head is defined. With this measure is with a slight Twisting the deflection of the ropes 12 out of the plane, the is defined by the pulleys 2, 3, 5, in the plane, which is defined by the pulleys 6, 7, possible, where Querzüge the ropes are minimized. This is the lifetime the ropes advantageous increased.

A particularly preferred embodiment of the invention Drive is shown in Figure 4.

The drive has as essential components an electric motor 112, a traction sheave 114, a braking device with a brake disk 116 and brake calipers 124, 126 as well a Riemenvorgelege 118, 120, 121 on. A case of the Electric motor 112 is designated 112a, a frame for Carrying the traction sheave with 170.

The Riemenvorgelege has a first, on the motor shaft 113th attached to the electric motor pulley 118, a second, attached to the traction sheave 114 pulley 120th and a pulley 118, 120 coupled together Strap 121 on.

The belt 121 is preferably as (positively acting) Timing belt formed of the highest strength material. As a material are for example with aramid or Kevlar fibers or strands reinforced plastics-preferred. There are Furthermore, non-positively acting belt, for example V-belt, usable.

In Figure 4 it can be seen that the electric motor 112 and the Traction sheave 114 and the braking device 116, 124, 126th are arranged one above the other so that the shaft 113 of the Electric motor 112 and the axis 150 of the traction sheave 114th parallel to each other. With this measure is the horizontal extension of the drive 115, d. H. the extension in the direction of the shaft or axle 113 or 150, can be minimized.

As can also be seen in FIG. 4, the belt countershaft is set a reduction gear, wherein the drive torque of the engine 112 expediently by a factor two to five is reduced.

The motor 112 is (in the elevator shaft, not shown in FIG. 4) below the traction sheave 114 and the braking device arranged, and protrudes in its axial length not significantly above the cumulative width of traction sheave and braking device. Furthermore, the brake disc 116 of the braking device rotatably with the traction sheave 114th connected so that even in case of failure of Riemenvorgeleges no security risks arise.

The traction sheave 114 drives, as also in Figure 4 to recognize the number of elevator ropes 12. In FIG. 4 By way of example, six parallel ropes 12 are shown.

FIG. 5 shows a sectional view of the drive according to FIG 4 in a through the shaft or axis 113 and 150 defined Level shown. The already with reference to FIG 4 described components are also shown in Figure 5 and each provided with the same reference numerals.

The electric motor 112 has a stator 130 which via a suspension 132 with the housing 112 a firmly connected is. The electric motor 112 designed as a synchronous motor also has a bell-shaped, outside running Rotor 134 on. The rotor 134 is rotationally fixed with the Motor shaft 113 connected. The rotor 134 is by means of a Bearing 138 rotatably mounted within the stator. The wave 113 is rotatable about a further motor bearing 140 in the stator stored.

On a first end, the shaft 113 with the already under Referring to Figure 4 described pulley 118th rotatably connected. On the opposite side is on the shaft 113, a pulse generator 146 rotatably applied, which, for example, in the context of a motor control or for determining a car position or speed can be used.

Overall, the bearing of the rotor and the pulley 118 flying trained, d. H. Rotor 134 and pulley 118 are not two-sided, but (axial) only one-sided provided with storage means.

The housing 112a in which the electric motor 112 is located is at the shaft wall 102a, for example by means of a Attached (not shown) carrier, or even on one or more guide rails or on a shaft framework.

Above the electric motor 112 is, as already with reference 4, a traction sheave 114 arranged. The traction sheave 114 is, for example by means of Bolt 162, non-rotatably with the pulley 120 of the Riemenvorgeleges connected. The storage of the traction sheave or the pulley on the axis 150 by means of bearings 164th

As already described with reference to FIG. 4, FIG also the pulley 120 together with the traction sheave 114 cantilevered because the axis 150 on one side in the Carrier assembly 114 a is held.

The brake disc 116 is also concentric with the axis 150 rotatably connected to the traction sheave 114. This attachment is accomplished for example by means of bolts 166.

The braking device shown in Figures 4 and 5 is a disc brake with two calipers 124 and 126. The Brake disc 116 is by means of brake calipers 124, 126 in acted upon known manner. The brake calipers 124, 126 include, for example, brake shoes 124a and 124b, which for triggering a braking operation with the brake disc 116 can be brought into operative connection.

It is advantageous that the brake calliper 124 between the support cables is arranged (see in particular Figure 4) and the Brake calliper 126 opposite to it on the side direction Motor, so that neither in the axial direction of the axis 115 nor in the width of the drive requires additional space. Instead of training the braking device as Disc brake can this also z. B. formed as a jaw brake be. Particularly advantageous here is that the diameter of the brake disc 116 is greater than the diameter of the traction sheave 114 is.

Traction sheave 114 and braking device 124, 126, 116 are held on a frame 170 via the carrier assembly 114a, fixed to the frame 112a of the engine 112, for example is connected by screws 173 (see Figure 4).

A cover hood 174 can be provided on the shaft side, which prevents an unwanted engagement in the belt drive and dampens or reduces the noise emission of the drive.

In addition, the distance between the axis 150 and the Shaft 113 by adjustment with a set screw 172 to be changed.

Such a drive 15, as shown in FIGS. 4 and 5 is shown, has a particularly flat design, and may be disposed adjacent to the roadway of the counterweight 14 become. The drive 15 can be at any height in Shaft be arranged. It is an alternative to those in the Figures 4 and 5 illustrated embodiments of a drive Also a gearless drive of appropriate size can be used.

Due to the flexibility in the vertical arrangement in the Shaft can be customized building requirements, for example the location of vulnerable rooms or even Groundwater hazard in the pit, in particular be met in a simple and effective way. At a Particularly favorable embodiment of the drive is the 15th together with a controller 80 or a controller in a height of 0.1 to 2.0 m above the threshold of the lowest Shaft door arranged. In this arrangement are drive 15 and control unit 80 or control for inspection and maintenance achievable without additional aids, and nevertheless at the same time before groundwater or a flood protected.

As described above with reference to FIGS. 1 and 2, is inventively provided, three pulleys 2, 3, 5 in the shaft head side by side to arrange in a plane. The use of three pulleys in the shaft head allows a spatial separation of the ascending and outgoing cable strands, so that the rope course is substantially vertical and so that it is independent of the head. Furthermore allows the spatial separation of the ascending and outgoing cable strands, the pulley 6 below the car so far in Direction of the shaft wall 102a to move outward, approximately in the plane of the pulley 5 in the shaft head, that the pulley 5 in the shaft head cost and saves space with the pulleys 2, 3 parallel axis can be arranged. Such an arrangement of the pulleys 2, 3, 5 with parallel axes thus allows the Arrangement of pulleys 2, 3, 5 in the smallest possible space, both in the extension direction parallel to the side wall 102a, as well as perpendicular thereto.

With the invention also proposed reduction the pulley diameter makes it possible the three Pulleys 2, 3, 5 next to each other and in a plane in Shaft head to arrange, without larger shaft spaces, than this are defined by the usual manhole standards to have to.

Corresponding to the reduction of the pulley diameter It is also possible to have one over the conventional one Embodiments of relatively small pulley diameter for the traction sheave 114 to choose. With this measure is it is possible to use smaller drives as these are their size essentially by the drive torque be determined. In a particularly suitable Characteristic of the invention is the drive 15 on an access side Side of the management level of the car arranged and the management level of the car relative to the Symmetry axis of the car in the direction of this access page added. This may be on the opposite this access Side of the management level of the car a counterweight be arranged even for conventional Steel filling can be made sufficiently large. Furthermore is located in the case of cars without through-loading the management level because of the high door weight so closer to the center of mass of the car, resulting in lower loads on guide rails and guides leads.

In a particularly suitable embodiment of the invention Elevators become cost-effective as suspension cables 12, commercial limiter ropes with a rope diameter of 6 or 6.5 mm used. Limiter ropes are as running Ropes proven for decades and in terms of their Lifespan and its wear behavior are well studied. Also a replacement is over longer periods unproblematic.

The necessary to meet relevant standards Shelter in the shaft head or in the lower area of the Schachtes are provided according to the invention.

In a reduced shaft head embodiment Shelter and pinch spaces on the car roof only temporarily available for maintenance and installation work posed. This results in the possibility of a considerable Reduction of the shaft length. The pit will be by an electrical safety device 82 via watch as you enter the pit each car movement prevented.

All versions can also be combined with each other.

Claims (18)

Engine roomless traction sheave elevator with a at least two-to-one suspended car (10), wherein the car (10) via support means (12) with a Counterweight (14) is connected, and one below the Schachtkopfbereiches arranged, a motor (112) and a drive pulley (114) having drive (15), wherein the counterweight and the drive and at least three in the shaft head arranged pulleys (2, 3, 5), one at the counterweight (14) mounted pulley (1) and the Traction sheave (114) on one side of the carriageway of the Car (10) and substantially in one plane are arranged, the axes of rotation (2a, 3a, 5a, 1a, 4a) of the Shaft head arranged pulleys (2, 3, 5), the Counterweight (10) arranged pulley (1) and the Traction sheave (4) substantially parallel to each other are aligned, and the support means (12) at least two Have ropes. Traction sheave elevator according to claim 1, characterized in that as suspension means three, four, five, six, seven, eight or more ropes with a round cross-section and a diameter of less than 10 mm, in particular less than 8 mm or less than 6.5 mm or less than 6 mm are. Traction sheave elevator according to one of claims 1 or 2, characterized in that the diameter of the pulleys (2, 3, 5) and / or the diameter of the traction sheave (4) is less than forty times a rope diameter. Traction sheave elevator according to one of the preceding claims, characterized in that the pulley (5) in the horizontal direction is a piece pivotally, without increasing the distance between the car wall and shaft wall. Traction sheave elevator according to one of the preceding claims, characterized in that the pulley (5) in the horizontal direction is slightly displaceable in the direction of the car, without increasing the distance between the car wall and the shaft wall. Traction sheave elevator according to one of the preceding claims, characterized in that the traction sheave (4) has a feeding with a higher coefficient of friction. Traction sheave elevator according to one of the preceding claims, characterized in that the pulleys (2, 3, 5) in the shaft head and a counterweight rope end suspension (20) on a frame (200) are attached, located next to the carriageway of the car and on the road surface of the Counterweight (14) and consists essentially of a support which is fixed to the shaft front wall and the shaft rear wall, or on guide rails (14a, 14b) of the counterweight and a guide rail (10a) of the car (10) is fixed. Traction sheave elevator according to claim 7, characterized in that the carrier (200) opposite car-side cable end suspension (30) and a speed limiter (85) on a common receiving means (31) are attached to a further car rail (10b) and / or on the Shaft wall is attached. Traction sheave elevator according to one of the preceding claims, characterized in that the height of the shaft head (103) substantially corresponds to the storey height of the uppermost approachable floor, and that the normal travel with people on a roof (10c) of the car (10) by an electrical safety device ( 81), which is arranged on the roof of the car or also fixed in the area of the shaft head, and whose sensors are equipped with running mats or plates, voltage measuring devices (DMS), light barriers, image or thermal cameras or motion detectors. Traction sheave elevator according to one of the preceding claims, characterized in that the depth of the shaft pit (104) does not substantially exceed the foundation depth of the building, and in that means (82) are provided for any travel of the car when a person stays in the shaft pit (104 ), wherein the means are designed in particular as an electrical safety device whose sensor is equipped with running mats or plates, a voltage measuring device (DMS), light barriers, image or thermal imaging cameras or motion detectors. Traction sheave elevator according to one of the preceding claims, characterized in that at least the door of the lowest station is provided with a pit access control. Traction sheave elevator according to one of the preceding claims, characterized in that the car is formed with a door apron (90) which corresponds to only one length of unlocking zone, further comprising means (91) for preventing a person from falling during an emergency release the device either the opening of the doors from the inside of the car only at approximate leveling position of the elevator car (10) in a stop allows, and / or on the car (10) to be arranged skirt part, which is to be used in a passenger exemption at any car position. Traction sheave elevator according to one of the preceding claims, characterized in that the drive comprises a with the traction sheave (114) cooperating electric motor (112), a braking device (116, 124, 126) and a countershaft, wherein the countershaft with a first, non-rotatably with a Shaft (113) of the electric motor connected counter gear (118), another, with the traction sheave (114) rotatably connected Vorlegerad (120) and a transmission element (121) for transmitting a rotation of the shaft (113) on the traction sheave (114) is formed , Traction sheave elevator according to claim 13, characterized in that the brake disc (116) of the braking device is rotatably connected to the traction sheave (114), wherein the axis of rotation (150) of the traction sheave (114) and the shaft (113) of the electric motor are aligned parallel to each other, and the counter gears provided on the shaft (113) and the axle (150) are arranged in a flying manner. Traction sheave elevator according to one of the preceding claims, characterized in that the drive (15) and a control device (80) and / or at least a part of the elevator control are arranged side by side or with each other, wherein the arrangement by separate devices, mounted on a common carrier devices or combined in a housing devices can be executed. Traction sheave elevator according to one of the preceding claims, characterized in that drive (15) and control device (80) are arranged in the lower region of the shaft at a height between 0.1 m to 2.0 m above a threshold of a lowermost shaft door. Traction sheave elevator according to one of the preceding claims, characterized in that the car (10) is designed as a self-supporting car without separate catch frame with integrated in the car floor safety gear and pulleys (6, 7). Traction sheave elevator according to one of the preceding claims, characterized in that plastic cables are used as suspension means.

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