EP1706346B1 - Lift system - Google Patents
Lift system Download PDFInfo
- Publication number
- EP1706346B1 EP1706346B1 EP04804313A EP04804313A EP1706346B1 EP 1706346 B1 EP1706346 B1 EP 1706346B1 EP 04804313 A EP04804313 A EP 04804313A EP 04804313 A EP04804313 A EP 04804313A EP 1706346 B1 EP1706346 B1 EP 1706346B1
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- EP
- European Patent Office
- Prior art keywords
- support means
- ribs
- cross
- tensile
- belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000969 carrier Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 description 18
- 238000005452 bending Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/062—Belts
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2083—Jackets or coverings
- D07B2201/2087—Jackets or coverings being of the coated type
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2007—Elevators
Definitions
- Elevator systems of the type according to the invention usually have an elevator car and a counterweight, which are movable in an elevator shaft or along free-standing guide devices.
- the elevator installation has at least one drive with at least one traction sheave each, which carries the elevator car and the counterweight via supporting and / or drive means and transmits the required driving forces thereto.
- suspension means for the sake of simplicity.
- WO 03/043926 is a machine room elevator system known in which are used as a support means for the elevator car V-ribbed belt.
- These comprise a flat belt-like belt body produced from an elastic material (rubber, elastomers), which has a plurality of ribs extending in the longitudinal direction of the belt on its running surface facing the traction sheave.
- These ribs cooperate with complementary shaped grooves in the periphery of driving or deflecting pulleys (hereinafter referred to as pulleys) to guide the V-ribbed belt on the pulleys on the one hand and to increase traction between the traction sheave and the support means on the other hand.
- the ribs and grooves have triangular or trapezoidal, ie wedge-shaped cross-sections.
- the belt body of the V-ribbed belts are oriented in the belt longitudinal direction, consisting of metallic or non-metallic strands
- V-ribbed belts have certain disadvantages, ie, they are not optimally adapted to the requirements of a suspension means for elevator cars. Such a suspension should have the smallest possible dimensions and the lowest possible weight own high load capacity and low Lähgselastiztician and can be performed on driving and deflecting discs with the smallest possible diameters.
- the according to WO 03/043926 V-ribbed belts used as suspension means show relatively large cross-sections of the belt bodies in relation to the cross sections of the tension members, ie the thickness of the belt bodies is large with respect to the diameters of the tension members, and the edge portions of the belt bodies, in particular the tips of the wedge-shaped ribs are relatively far away from the tension members.
- the disclosed V-ribbed belt on the one hand have more than the amount of material required for the belt body and thus are too heavy and too expensive.
- the material of the relatively high in the bending direction belt body is unnecessarily strongly stressed by bending alternating voltages when the support means rotates a traction sheave or a pulley of small diameter, which can lead to cracking and premature failure of the suspension element. Strong bending alternating voltages are in particular the areas of the belt body remote from the tension members, ie the tips of the wedge-shaped ribs.
- EP 1 396 458 A2 is an elevator system known as a support and drive means for the elevator car flat belt elastomeric material reinforced by tension members embedded in the belt longitudinal direction.
- the flat belts are provided with longitudinal ribs and act like conventional V-ribbed belts with drive or deflection pulleys which are designed as pulleys, the grooves of these pulleys corresponding to the ribs of the flat belts.
- the longitudinal ribs have trapezoidal or wedge-shaped cross sections and are distributed with equal pitches over the entire belt width.
- the present invention has for its object to provide an elevator system of the type described above, in which the disadvantages mentioned are not present, ie, that the elevator system comprises a flat belt-like support means with ribs, which when used with minimum pulley diameters and for a given carrying capacity minimum dimensions and minimal weight, wherein the tension members and the belt body are exposed to the lowest possible loads, so that the support means optimum life is guaranteed.
- the proposed solution consists essentially in that in a lift installation, a flat belt-like suspension means is used according to claim.
- the sum of the cross-sectional areas of all tensile carriers is at least 25%, preferably 30% to 40%. the entire cross-sectional area of the suspension element.
- the cross-section defined by their outer diameter must be taken into account.
- a suspension element is defined which has small dimensions and material quantities for a given permissible load. Such small dimensions in turn result in correspondingly small alternating bending stresses in the material of the belt body.
- materials rubber, elastomers
- the tensile carriers assigned to its rib are arranged so that in each case an outer tensile carrier is largely in the region of the vertical projection of one flank each of the wedge-shaped rib.
- a directed perpendicular to the plane of the flat side of the support means projection is designated, and by "largely” is to be understood that at least 90% of the cross-sectional area of the respective tension member are within said projection.
- tension members with a substantially round cross-section are used in the suspension element, the outside diameter of which is at least 30%, preferably 35% to 40%, of the rib spacing.
- the distance between ribs is to be understood as meaning the distance between adjacent ribs of a suspension element, which is usually the same between all the ribs of a particular suspension element.
- at a support means designed according to this rule ensures that the forces to be transmitted by the tension members via the belt body, to a traction sheave or a pulley optimally distributed in the belt body and the surface pressures occurring between tension members and belt body are optimally low. This minimizes the risk that a loaded tension member cuts through the belt body.
- the ribs have a wedge-shaped cross section with a flank angle of 60 ° to 120 °, with the range of 80 ° to 100 ° being preferred.
- the flank angle is the angle existing between both side surfaces (flanks) of a wedge-shaped rib. With flank angles of 60 ° to 120 ° on the one hand ensures that no run between the ribs and the complementarily shaped grooves of the pulleys during the running of the support means pulleys. This reduces running noise as well as the excitation of vibrations of the V-ribbed belt. On the other hand, with such flank angles sufficient guidance of the support means on the pulleys can be achieved, which prevents lateral displacement of the support means relative to the pulleys.
- Optimal small dimensions and low weight of the suspension element can be achieved if the minimum distance of the outer contour of a tension member to a surface of a rib is at most 20% of the total thickness of the suspension element.
- the total thickness is understood to mean the entire thickness of the belt body with the grooves.
- an outer tension member is arranged completely in the region of the vertical projection (P) of in each case one flank of a wedge-shaped rib.
- tensile steel wire ropes are used. Steel wire ropes are stretched less at the same load as, for example, tensile carriers with the same cross section of conventional synthetic fibers.
- a support means with a particularly low allowable bending radius which is suitable for use in combination with pulleys of small diameter, can be achieved in that the steel wire ropes have outer diameter of less than 2 mm and are stranded from several strands, the total of more than 50 individual wires contain.
- V-ribbed belt 12 is attached at one of its ends below the traction sheave 4.1 at a first support means fixed point 10. From this, it extends down to the counterweight carrying roller 4.3, wraps around this and extends from this to the traction sheave 4.1, wraps around it and runs along the gegenimportants districten cabin wall down, wraps on both sides of the elevator car depending mounted below the elevator car 3 cabin roll 4.2 by 90 ° and extends along the counterweight 8 facing away from the cabin wall up to a second support means fixed point eleventh
- the plane of the traction sheave 4.1 is arranged at right angles to the counterweight-side cabin wall and its vertical projection is outside the vertical projection of the elevator car 3. It is therefore important that the traction sheave 4.1 has a small diameter, so that the distance between the left-hand cabin wall and the opposite wall of the Elevator shaft 1 can be as small as possible. In addition, a small pulley diameter allows the use of a gearless drive motor with relatively low drive torque as the drive unit. 2
- the traction sheave 4.1 and the counterweight support roller 4.3 are provided at their periphery with grooves which are formed complementary to the ribs of the V-ribbed belt 12. Where the V-ribbed belt 12 wraps around one of the pulleys 4.1 and 4.3, its ribs lie in corresponding grooves of the pulley, thus ensuring perfect guidance of the V-ribbed belt on these pulleys. In addition, by a serving between the grooves of the pulley 4.1 and the ribs of the pulley V-ribbed belt 12 improved wedge effect improves traction.
- Fig. 2 shows a portion of serving as a support means V-ribbed belt 12.1 of an elevator system according to the invention.
- the belt body 15.1, the wedge-shaped ribs 20.1 and the tension members 22 embedded in the belt body can be seen.
- Fig. 3 shows a cross section through a V-ribbed belt 12.1 according to the present invention, which includes a belt body 15.1 and a plurality of traction carriers 22 embedded therein.
- the belt body 15.1 is made of an elastic material. For example, natural rubber or a variety of synthetic elastomers can be used.
- the flat side 17 of the belt body 15.1 may be provided with an additional cover layer or an incorporated fabric layer.
- the at least with the traction sheave 4.1 of the drive unit 2 cooperating traction side of the belt body 15.1 has a plurality of wedge-shaped ribs 20.1, which extend in the longitudinal direction of the V-ribbed belt 12.1.
- a pulley 4 is indicated, in the periphery of which complementary grooves are incorporated into the ribs 20.1 of the V-ribbed belt 12.1.
- Each of the wedge-shaped ribs 20.1 of the V-ribbed belt 12.1 is associated with two round tension members 22, which are dimensioned so that they can jointly transmit the belt loads occurring in the V-ribbed belt per rib. These belt loads are on the one hand the transmission of pure tensile forces in the belt longitudinal direction. On the other hand, when a belt pulley 4.1 - 4.4 is wrapped, forces are transmitted radially from the tension members to the belt pulley via the belt body. The cross sections of the tension members 22 are dimensioned so that these radial forces do not cut through the belt body 15.1. In the case of wrap around a pulley, additional bending stresses occur in the tension members due to the curvature of the V-ribbed belt resting on the pulley.
- the forces to be transmitted per rib 20.1 are distributed over two tension members, although a single tension member arranged in the center of the rib would allow a slightly smaller total thickness of the V-ribbed belt.
- Extensive testing has determined an arrangement of belt body 15.1 and tension members 22 which, for a given pulley diameter D of about 90 mm, a given tensile load and given allowable alternating bending stress of the tension members and belt body material, provides the lowest possible total cross section with the least weight of the V-ribbed belt .
- the proportion of the total cross-sectional area of all tensile carriers on the cross-sectional area of the V-ribbed belt should be at least 25%, preferably 30% to 40%.
- the abovementioned properties are achieved particularly optimally if the outer diameter of a tension member is at least 30% of the rib spacing.
- the rib spacing is the regular pitch T of the ribs.
- Fig. 4 shows a variant 12.2 of the V-ribbed belt, in which the wedge-shaped ribs 20.2 wider than in in Fig. 2 variant 12.1 are shown and each having three associated tension members. All others in connection with the variant according to Fig. 2 mentioned properties are also present in this variant.
- Such a V-ribbed belt has the advantage that the corresponding pulleys 4.1, 4.3, 4.4 are somewhat easier to produce.
- V-ribbed belt serving as a support means V-ribbed belt have a preferred flank angle ⁇ of about 90 °.
- the flank angle is the angle between two flanks of a wedge-shaped rib of the belt body.
- the flank angle has a decisive influence on the development of noise and the generation of vibrations, and that for a lift-carrying means provided V-ribbed belt ⁇ of 80 ° to 100 ° optimally and 60 ° are applicable up to 120 °.
- the distances A between centers of the tensile carriers 22 associated with a particular rib are slightly smaller than the distances B between centers of adjacent tensile carriers of adjacent ribs. This is due to the maintenance of a minimum required distance of the tension members 22 to the edges of the ribs 20.1, 20.2. By keeping the differences in these distances as small as possible, a homogeneous distribution of the forces introduced by the belt body in the tension members is ensured. It has proved to be advantageous if the distances A are not more than 20% smaller than the distances B.
- the 3 and 4 It can also be seen that small dimensions and low weight of the V-ribbed belt are achieved by making the distances X between the outer contours of the tension members and the surfaces of the ribs as low as possible. Optimum properties have been found for the V-ribbed belt tests, where these distances X are at most 20% of the total thickness s of the suspension element or at most 17% of the spacing T present between the ribs 20.1, 20.2. The total thickness s is the entire thickness of the belt body 15.1, 15.2 with the ribs 20.1, 20.2 to understand.
- V-ribbed belts 12.1, 12.2 when the ribs 20.1, 20.2 associated tensile carrier 22 are arranged so that in each case an outer tensile carrier largely or completely in the region of the vertical projection P of each flank of the wedge-shaped rib 20.1, 20.2 lies.
- Fig. 5 shows an enlarged view of a cross section through a preferred embodiment of a tension member 22, which is ideal for a V-ribbed belt for use in an elevator system according to the invention.
- the tension member 22 is a steel wire rope, which are stranded from a total of 75 individual wires 23 with extremely small diameters.
- the steel wire ropes used as tension members 22 consist of at least 50 individual wires.
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Types And Forms Of Lifts (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Vehicle Body Suspensions (AREA)
- Paper (AREA)
- Electromagnets (AREA)
- Reciprocating Pumps (AREA)
- Escalators And Moving Walkways (AREA)
Abstract
Description
Gegenstand der Erfindung ist eine Aufzugsanlage, wie in den Patentansprüchen definiert.The subject of the invention is an elevator installation as defined in the patent claims.
Aufzugsanlagen der erfindungsgemässen Art weisen üblicherweise eine Aufzugskabine und ein Gegengewicht auf, die in einem Aufzugsschacht oder entlang freistehender Führungseinrichtungen bewegbar sind. Zum Erzeugen der Bewegung weist die Aufzugsanlage mindestens einen Antrieb mit mindestens je einer Treibscheibe auf, die über Trag- und/oder Antriebsmittel die Aufzugkabine und das Gegengewicht tragen und die erforderlichen Antriebskräfte auf diese übertragen.Elevator systems of the type according to the invention usually have an elevator car and a counterweight, which are movable in an elevator shaft or along free-standing guide devices. To generate the movement, the elevator installation has at least one drive with at least one traction sheave each, which carries the elevator car and the counterweight via supporting and / or drive means and transmits the required driving forces thereto.
Im Folgenden werden der Einfachheit halber die Trag- und/oder Antriebsmittel nur noch als Tragmittel bezeichnet.In the following, the carrying and / or drive means will only be referred to as suspension means for the sake of simplicity.
Aus
Die aus
Die gemäss
The according to
Aus
Bei den in
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Aufzugsanlage der vorstehend beschriebenen Art zu schaffen, bei der die genannten Nachteile nicht vorhanden sind, d. h., dass die Aufzugsanlage ein flachriemenartiges Tragmittel mit Rippen umfasst, welches beim Einsatz mit minimalen Riemenscheibendurchmessern und bei vorgegebener Tragfähigkeit minimale Abmessungen und minimales Gewicht aufweist, wobei die Zugträger und der Riemenkörper geringstmöglichen Belastungen ausgesetzt sind, so dass für das Tragmittel eine optimale Lebensdauer gewährleistet ist.The present invention has for its object to provide an elevator system of the type described above, in which the disadvantages mentioned are not present, ie, that the elevator system comprises a flat belt-like support means with ribs, which when used with minimum pulley diameters and for a given carrying capacity minimum dimensions and minimal weight, wherein the tension members and the belt body are exposed to the lowest possible loads, so that the support means optimum life is guaranteed.
Erfindungsgemäss wird diese Aufgabe durch die im Patentanspruch 1 angegebenen Massnahmen und Merkmale gelöst.According to the invention, this object is achieved by the measures and features specified in patent claim 1.
Die vorgeschlagene Lösung besteht im Wesentlichen darin, dass bei einer Aufzugsanlage ein flachriemenartiges Tragmittel gemäß Anspruch verwendet wird.The proposed solution consists essentially in that in a lift installation, a flat belt-like suspension means is used according to claim.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den unabhängigen Ansprüchen 2 bis 7 hervor.Advantageous embodiments and modifications of the invention will become apparent from the
Bei einer besonders bevorzugten Ausführungsform des flachriemenartigen Tragmittels beträgt die Summe der Querschnittsflächen aller Zugträger mindestens 25%, vorzugsweise 30% bis 40% der gesamten Querschnittsfläche des Tragmittel. Für die Ermittlung der gesamten Querschnittsfläche der Zugträger ist der durch deren Aussendurchmesser definierte Querschnitt zu berücksichtigen. Mit dem angegebenen Verhältnis zwischen der Summe der Querschnittsflächen aller Zugträger und der Querschnittsfläche des Tragmittels wird ein Tragmittel definiert, das bei gegebener zulässiger Belastung geringe Abmessungen und Materialmengen aufweist. Solche geringe Abmessungen haben wiederum entsprechend geringe Wechsel-Biegespannungen im Material des Riemenkörper zur Folge. Für die Herstellung des Riemenkörpers können daher Materialien (Gummi, Elastomere) gewählt werden, die eine geringere zulässige Biegebeanspruchung ausweisen, jedoch höhere Flächenpressungen zwischen Zugträgern und Riemenkörper ertragen.In a particularly preferred embodiment of the flat belt-like support means, the sum of the cross-sectional areas of all tensile carriers is at least 25%, preferably 30% to 40%. the entire cross-sectional area of the suspension element. To determine the total cross-sectional area of the tension members, the cross-section defined by their outer diameter must be taken into account. With the specified ratio between the sum of the cross-sectional areas of all tensile carriers and the cross-sectional area of the suspension element, a suspension element is defined which has small dimensions and material quantities for a given permissible load. Such small dimensions in turn result in correspondingly small alternating bending stresses in the material of the belt body. For the production of the belt body therefore materials (rubber, elastomers) can be selected, which have a lower allowable bending stress, but bear higher surface pressures between tension members and belt body.
Nach einer bevorzugten Ausgestaltung der Erfindung sind die seiner Rippe zugeordneten Zugträger so angeordnet, dass jeweils ein äusserer Zugträger weitgehend im Bereich der senkrechten Projektion von jeweils einer Flanke der keilförmigen Rippe liegt.
Als senkrechte Projektion ist eine senkrecht auf die Ebene der Flachseite des Tragmittels gerichtete Projektion bezeichnet, und unter "weitgehend" ist zu verstehen, dass mindestens 90% der Querschnittsfläche des jeweiligen Zugträgers innerhalb der genannten Projektion liegen.According to a preferred embodiment of the invention, the tensile carriers assigned to its rib are arranged so that in each case an outer tensile carrier is largely in the region of the vertical projection of one flank each of the wedge-shaped rib.
As a vertical projection, a directed perpendicular to the plane of the flat side of the support means projection is designated, and by "largely" is to be understood that at least 90% of the cross-sectional area of the respective tension member are within said projection.
Gemäss einer bevorzugten Ausgestaltung der Erfindung werden im Tragmittel Zugträger mit im Wesentlichen rundem Querschnitt verwendet, deren Aussendurchmesser mindestens 30%, vorzugsweise 35% bis 40% des Rippenabstands beträgt. Als Rippenabstand ist der Abstand zwischen benachbarten Rippen eines Tragmittels zu verstehen, der üblicherweise zwischen allen Rippen eines bestimmten Tragmittels derselbe ist. Bei einem nach dieser Regel ausgebildeten Tragmittel ist gewährleistet, dass die von den Zugträgern über den Riemenkörper, auf eine Treibscheibe oder eine Umlenkrolle zu übertragenden Kräfte optimal im Riemenkörper verteilt und die zwischen Zugträgern und Riemenkörper auftretenden Flächenpressungen optimal gering sind. Damit wird das Risiko minimiert, dass ein belasteter Zugträger den Riemenkörper durchschneidet.According to a preferred embodiment of the invention, tension members with a substantially round cross-section are used in the suspension element, the outside diameter of which is at least 30%, preferably 35% to 40%, of the rib spacing. The distance between ribs is to be understood as meaning the distance between adjacent ribs of a suspension element, which is usually the same between all the ribs of a particular suspension element. at a support means designed according to this rule ensures that the forces to be transmitted by the tension members via the belt body, to a traction sheave or a pulley optimally distributed in the belt body and the surface pressures occurring between tension members and belt body are optimally low. This minimizes the risk that a loaded tension member cuts through the belt body.
Vorteilhafterweise weisen die Rippen einen keilförmige Querschnitt mit einem Flankenwinkel von 60° bis 120° auf, wobei der Bereich von 80° bis 100° zu bevorzugten ist. Als Flankenwinkel ist der zwischen beiden Seitenflächen (Flanken) einer keilförmigen Rippe vorhandene Winkel bezeichnet. Mit Flankenwinkeln von 60° bis 120° ist einerseits gewährleistet, dass beim Lauf des Tragmittels über Riemenscheiben kein Klemmen zwischen den Rippen und den zu ihnen komplementär geformten Rillen der Riemenscheiben auftritt. Dadurch werden Laufgeräusche wie auch die Anregung von Vibrationen des Keilrippenriemens reduziert. Andererseits kann mit solchen Flankenwinkeln eine ausreichende Führung des Tragmittels auf den Riemenscheiben erzielt werden, welche eine Seitwärtsverschiebung des Tragmittels gegenüber den Riemenscheiben verhindert.Advantageously, the ribs have a wedge-shaped cross section with a flank angle of 60 ° to 120 °, with the range of 80 ° to 100 ° being preferred. The flank angle is the angle existing between both side surfaces (flanks) of a wedge-shaped rib. With flank angles of 60 ° to 120 ° on the one hand ensures that no run between the ribs and the complementarily shaped grooves of the pulleys during the running of the support means pulleys. This reduces running noise as well as the excitation of vibrations of the V-ribbed belt. On the other hand, with such flank angles sufficient guidance of the support means on the pulleys can be achieved, which prevents lateral displacement of the support means relative to the pulleys.
Optimal geringe Abmessungen und geringes Gewicht des Tragmittels sind erreichbar, wenn der minimale Abstand der Aussenkontur eines Zugträgers zu einer Oberfläche einer Rippe höchstens 20% der Gesamtdicke des Tragmittels beträgt. Als Gesamtdicke ist die gesamte Dicke des Riemenkörpers mit den Rillen zu verstehen.Optimal small dimensions and low weight of the suspension element can be achieved if the minimum distance of the outer contour of a tension member to a surface of a rib is at most 20% of the total thickness of the suspension element. The total thickness is understood to mean the entire thickness of the belt body with the grooves.
Bei einer besonders vorteilhaften Ausführungsform ist jeweils ein äusserer Zugträger vollständig im Bereich der senkrechten Projektion (P) von jeweils einer Flanke einer keilförmigen Rippe angeordnet.In a particularly advantageous embodiment, in each case an outer tension member is arranged completely in the region of the vertical projection (P) of in each case one flank of a wedge-shaped rib.
Mit den beiden vorstehend definierten Anordnungen der Zugträger im Flankenbereich ist gewährleistet, dass beim Umlaufen einer Riemenscheibe kein Zugträger durch diejenige Stelle des Riemenkörpers abgestützt werden muss, welche die tiefste Einkerbung aufweist, die durch die zwischen den Rippen liegenden Rillen gebildet wird.With the two above-defined arrangements of the tension members in the flank area it is ensured that during the rotation of a pulley, no tension member has to be supported by that point of the belt body having the deepest notch formed by the grooves lying between the ribs.
Um ein Tragmittel zu erhalten, das bei gegebener Zugbelastung eine möglichst geringe Längsdehnung aufweisen, werden Zugträger aus Stahldrahtseilen verwendet. Stahldrahtseile werden bei gleicher Belastung weniger gedehnt als beispielsweise Zugträger mit gleichem Querschnitt aus üblichen Kunstfasern.In order to obtain a suspension, which have the lowest possible elongation at a given tensile load, tensile steel wire ropes are used. Steel wire ropes are stretched less at the same load as, for example, tensile carriers with the same cross section of conventional synthetic fibers.
Ein Tragmittel mit besonders geringen zulässigen Biegeradien, welches für die Anwendung in Kombination mit Riemenscheiben von geringem Durchmesser geeignet ist, kann dadurch erreicht werden, dass die Stahldrahtseile Aussendurchmesser von weniger als 2 mm aufweisen und aus mehreren Litzen verseilt sind, die insgesamt mehr als 50 Einzeldrähte enthalten.A support means with a particularly low allowable bending radius, which is suitable for use in combination with pulleys of small diameter, can be achieved in that the steel wire ropes have outer diameter of less than 2 mm and are stranded from several strands, the total of more than 50 individual wires contain.
Ausführungsbeispiele der Erfindung sind anhand der beigefügten Zeichnungen erläutert.Embodiments of the invention are explained with reference to the accompanying drawings.
Es zeigen:
- Fig. 1
- einen zu einer Aufzugskabinenfront parallelen Schnitt durch eine erfindungsgemässe Aufzugsanlage.
- Fig. 2
- eine isometrische Ansicht der Rippenseite eines Tragmittels gemäss Erfindung in Form eines Keilrippenriemens.
- Fig. 3
- einen Schnitt durch einen ersten, das Tragmittel der Aufzugsanlage bildenden Keilrippenriemen.
- Fig. 4
- einen Schnitt durch einen zweiten, das Tragmittel der Aufzugsanlage bildenden Keilrippenriemen.
- Fig. 5
- einen Querschnitt durch einen Stahldraht-Zugträger des Keilrippenriemens.
- Fig. 1
- a parallel to an elevator car front section through an inventive elevator system.
- Fig. 2
- an isometric view of the rib side of a support means according to the invention in the form of a V-ribbed belt.
- Fig. 3
- a section through a first, the support means of the elevator system forming V-ribbed belt.
- Fig. 4
- a section through a second, the support means of the elevator system forming V-ribbed belt.
- Fig. 5
- a cross section through a steel wire tension member of the V-ribbed belt.
Dargestellt sind im Wesentlichen:
- eine im Aufzugsschacht 1
fixierte Antriebseinheit 2 mit einer Treibscheibe 4.1 - eine an
Kabinenführungsschienen 5geführte Aufzugskabine 3 mit unterhalb des Kabinenbodens 6 angebrachten Kabinentragrollen 4.2 - ein an
Gegengewichtsführungsschienen 7geführtes Gegengewicht 8 mit einer Gegengewichtstragrolle 4.3 ein als Keilrippenriemen 12 ausgebildetes Tragmittel für dieAufzugskabine 3und das Gegengewicht 8, welches Tragmittel die Antriebskraft von der Treibscheibe 4.1der Antriebseinheit 2 auf die Aufzugskabine und das Gegengewicht überträgt.
(Bei einer realen Aufzugsanlage sind mindestens zwei parallel angeordnete Keilrippenriemen vorhanden)
Shown are essentially:
- a fixed in the elevator shaft 1
drive unit 2 with a traction sheave 4.1 - a guided to
cabin guide rails 5elevator car 3 with mounted below thecabin floor 6 cab support rollers 4.2 - a guided on
counterweight guide rails 7counterweight 8 with a counterweight roller 4.3 - a designed as a V-ribbed
belt 12 support means for theelevator car 3 and thecounterweight 8, which suspension means transmits the driving force from the traction sheave 4.1 of thedrive unit 2 to the elevator car and the counterweight.
(In a real elevator installation there are at least two parallel V-ribbed belts)
Der als Tragmittel dienende Keilrippenriemen 12 ist an einem seiner Enden unterhalb der Treibscheibe 4.1 an einem ersten Tragmittelfixpunkt 10 befestigt. Von diesem aus erstreckt er sich abwärts bis zu der Gegengewichtstragrolle 4.3, umschlingt diese und erstreckt sich von dieser aus zur Treibscheibe 4.1, umschlingt diese und verläuft entlang der gegengewichtsseitigen Kabinenwand abwärts, umschlingt auf beiden Seiten der Aufzugskabine je eine unterhalb der Aufzugskabine 3 angebrachte Kabinentragrolle 4.2 um je 90° und verläuft entlang der dem Gegengewicht 8 abgewandten Kabinenwand aufwärts zu einem zweiten Tragmittelfixpunkt 11.Serving as a support means V-ribbed
Die Ebene der Treibscheibe 4.1 ist rechtwinklig zur gegengewichtsseitigen Kabinenwand angeordnet und ihre Vertikalprojektion liegt ausserhalb der Vertikalprojektion der Aufzugskabine 3. Es ist daher wichtig, dass die Treibscheibe 4.1 einen geringen Durchmesser aufweist, damit der Abstand zwischen der linksseitigen Kabinenwand und der dieser gegenüber liegenden Wand des Aufzugsschachts 1 möglichst klein sein kann. Ausserdem ermöglicht ein geringer Treibscheibendurchmesser die Verwendung eines getriebelosen Antriebsmotors mit relativ geringem Antriebsdrehmoment als Antriebseinheit 2.The plane of the traction sheave 4.1 is arranged at right angles to the counterweight-side cabin wall and its vertical projection is outside the vertical projection of the
Die Treibscheibe 4.1 und die Gegengewichtstragrolle 4.3 sind an ihrer Peripherie mit Rillen versehen, die komplementär zu den Rippen des Keilrippenriemens 12 geformt sind. Wo der Keilrippenriemen 12 eine der Riemenscheiben 4.1 und 4.3 umschlingt, liegen seine Rippen in korrespondierenden Rillen der Riemenscheibe, wodurch eine perfekte Führung des Keilrippenriemens auf diesen Riemenscheiben gewährleistet ist. Ausserdem wird durch eine zwischen den Rillen der als Treibscheibe dienenden Riemenscheibe 4.1 und den Rippen des Keilrippenriemens 12 entstehende Keilwirkung die Traktionsfähigkeit verbessert.The traction sheave 4.1 and the counterweight support roller 4.3 are provided at their periphery with grooves which are formed complementary to the ribs of the V-ribbed
Bei der Tragmittel-Unterschlingung unterhalb der Aufzugskabine 3 ist keine seitliche Führung zwischen den Kabinentragrollen 4.2 und dem Keilrippenriemen 12 gegeben, da die Rippen des Keilrippenriemens sich auf seiner von den Kabinentragrollen 4.2 abgewandten Seite befinden. Um die Seitenführung des Keilrippenriemens dennoch zu gewährleisten, sind am Kabinenboden 6 zwei mit Rillen versehene Führungsrollen 4.4 angebracht, deren Rillen mit den Rippen des Keilrippenriemens 12 als Seitenführung zusammenwirken.In the support means unterschlingung below the
Jeder der keilförmigen Rippen 20.1 des Keilrippenriemens 12.1 sind zwei runde Zugträger 22 zugeordnet, die so dimensioniert sind, dass sie gemeinsam die im Keilrippenriemen pro Rippe auftretenden Riemenbelastungen übertragen können. Es handelt sich bei diesen Riemenbelastungen einerseits um die Übertragung reiner Zugkräfte in Riemenlängsrichtung. Andererseits werden bei der Umschlingung einer Riemenscheibe 4.1 - 4.4 von den Zugträgern Kräfte in radialer Richtung über den Riemenkörper auf die Riemenscheibe übertragen. Die Querschnitte der Zugträger 22 sind so dimensioniert, dass diese radialen Kräfte nicht den Riemenkörper 15.1 durchschneiden. Im Falle der Umschlingung einer Riemenscheibe treten in den Zugträgern zusätzliche Biegespannungen infolge der Krümmung des auf der Riemenscheibe aufliegenden Keilrippenriemens auf. Um diese zusätzlichen Biegespannungen in den Zugträgern 22 so gering wie möglich zu halten, werden die pro Rippe 20.1 zu übertragenden Kräfte auf zwei Zugträger verteilt, obwohl ein im Zentrum der Rippe angeordneter einziger Zugträger eine etwas geringere Gesamtdicke des Keilrippenriemens ermöglichen würde.Each of the wedge-shaped ribs 20.1 of the V-ribbed belt 12.1 is associated with two
Durch umfangreiche Tests wurde eine Anordnung von Riemenkörper 15.1 und Zugträgern 22 ermittelt, die bei einem gegebenem Riemenscheibendurchmesser D von etwa 90 mm, einer gegebenen Zugbelastung und gegebener zulässiger Wechsel-Biegebeanspruchung der Zugträger und des Riemenkörper-Materials einen geringstmöglichen Gesamtquerschnitt bei geringstmöglichem Gewicht des Keilrippenriemens ergibt. Als wichtiges Kriterium für einen Keilrippenriemen mit den genannten Eigenschaften hat sich dabei ergeben, dass der Anteil der Gesamt-Querschnittsfläche aller Zugträger an der Querschnittsfläche des Keilrippenriemens mindestens 25%, vorzugsweise 30% bis 40% betragen soll.Extensive testing has determined an arrangement of belt body 15.1 and
Der in
Bei einem Keilrippenriemen 12.1 mit zwei Zugträgern pro Rippe 20.1 werden vorstehend genannte Eigenschaften besonders optimal erreicht, wenn der Aussendurchmesser eines Zugträgers mindestens 30% des Rippenabstands beträgt. Als Rippenabstand wird der regelmässige Teilungsabstand T der Rippen bezeichnet.In the case of a V-ribbed belt 12.1 with two tension members per rib 20.1, the abovementioned properties are achieved particularly optimally if the outer diameter of a tension member is at least 30% of the rib spacing. The rib spacing is the regular pitch T of the ribs.
Die in
In
Den
Besonders geringe Abmessungen und gute Laufeigenschaften haben sich für Keilrippenriemen 12.1, 12.2 ergeben, wenn die einer Rippe 20.1, 20.2 zugeordneten Zugträger 22 so angeordnet sind, dass jeweils ein äusserer Zugträger weitgehend oder vollständig im Bereich der senkrechten Projektion P von jeweils einer Flanke der keilförmigen Rippe 20.1, 20.2 liegt.Particularly small dimensions and good running properties have shown for V-ribbed belts 12.1, 12.2, when the ribs 20.1, 20.2 associated
Um eine lange Lebensdauer des Tragmittels in Aufzugsanlagen mit Riemenscheiben von geringem Durchmesser zu erreichen, ist es von wesentlichem Vorteil, wenn die als Zugträger 22 verwendeten Stahldrahtseile aus mindestens 50 Einzeldrähten bestehen.In order to achieve a long service life of the suspension element in elevator systems with pulleys of small diameter, it is of considerable advantage if the steel wire ropes used as
Claims (7)
- Lift installation with a drive engine (2), which drives at least one support means (12.1) of flat belt form, which carries a lift cage (3), by way of a drive pulley (4.1), wherein the support means has, at least on a running surface facing the drive pulley (4.1), several ribs (20.1, 20.2) of wedge-shaped cross-section which extend parallelly in the longitudinal direction of the support means and which per rib has at least two tensile carriers (22) oriented in the longitudinal direction of the support means (12.1, 12.2), characterised in that the spacings (A) between the centres of tensile carriers (22) respectively associated with a rib are at most 20% smaller than the spacings (B) between the centres of adjacent tensile carriers (22) associated with two adjoining ribs, wherein a total cross-sectional area of all tensile carriers (22) is at least 25% of a cross-sectional area of the support means (12.1, 12.2).
- Lift installation according to claim 1, characterised in that the sum of the cross-sectional areas of all tensile carriers (22) amounts to 25% to 40% of the total cross-sectional area of the support means (12.1, 12.2).
- Lift installation according to claim 1, characterised in that the tensile carriers (22) are so distributed in transverse direction of the support means (12.1) that exactly two tensile carriers (22) are associated with each of the ribs (20.1), wherein in each instance at least 90% of the cross-sectional area of a tensile carrier lies within the perpendicular projection (P) of a respective inclined flank of one of the ribs (20.1).
- Lift installation according to claim 3, characterised in that an outer diameter of a tensile carrier amounts to at least 30% of a rib spacing (T).
- Lift installation according to one of claims 1 to 4, characterised in that the ribs (20.1, 20.2) have a wedge-shaped or trapezium-shaped cross-section with a flank angle (β) of 60° to 120°.
- Lift installation according to one of claims 1 to 5, characterised in that a minimum spacing (X) between an outer contour of a tensile carrier (22) and a surface of a rib (20.1, 20.2) amounts to at most 20% of the total thickness (s) of the support means (12.1, 12.2).
- Lift installation according to one of claims 1 to 6, characterised in that the tensile carriers (22) consist of steel wire cables, which are twisted from several stands in total containing more than 50 individual wires (23).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04804313A EP1706346B1 (en) | 2004-01-06 | 2004-12-27 | Lift system |
PL06118333T PL1724226T3 (en) | 2004-01-06 | 2004-12-27 | Elevator |
DK06118333.1T DK1724226T3 (en) | 2004-01-06 | 2004-12-27 | Elevator Plant |
EP06118333A EP1724226B1 (en) | 2004-01-06 | 2004-12-27 | Elevator |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04405008A EP1555234B1 (en) | 2004-01-06 | 2004-01-06 | Elevator |
EP04804313A EP1706346B1 (en) | 2004-01-06 | 2004-12-27 | Lift system |
PCT/EP2004/014723 WO2005066060A1 (en) | 2004-01-06 | 2004-12-27 | Lift system |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06118333A Division-Into EP1724226B1 (en) | 2004-01-06 | 2004-12-27 | Elevator |
EP06118333A Division EP1724226B1 (en) | 2004-01-06 | 2004-12-27 | Elevator |
EP06118333.1 Division-Into | 2004-12-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1706346A1 EP1706346A1 (en) | 2006-10-04 |
EP1706346B1 true EP1706346B1 (en) | 2012-10-10 |
Family
ID=34610248
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04405008A Expired - Lifetime EP1555234B1 (en) | 2004-01-06 | 2004-01-06 | Elevator |
EP06118333A Active EP1724226B1 (en) | 2004-01-06 | 2004-12-27 | Elevator |
EP04804313A Active EP1706346B1 (en) | 2004-01-06 | 2004-12-27 | Lift system |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
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EP04405008A Expired - Lifetime EP1555234B1 (en) | 2004-01-06 | 2004-01-06 | Elevator |
EP06118333A Active EP1724226B1 (en) | 2004-01-06 | 2004-12-27 | Elevator |
Country Status (20)
Country | Link |
---|---|
US (2) | US7757817B2 (en) |
EP (3) | EP1555234B1 (en) |
JP (1) | JP4896738B2 (en) |
CN (1) | CN1902119B (en) |
AT (2) | ATE325771T1 (en) |
AU (1) | AU2004312154B2 (en) |
BR (1) | BRPI0418358A (en) |
CA (1) | CA2552202C (en) |
CY (1) | CY1110542T1 (en) |
DE (2) | DE502004000538D1 (en) |
DK (2) | DK1555234T3 (en) |
ES (2) | ES2264105T3 (en) |
MX (1) | MXPA06007700A (en) |
NO (1) | NO334078B1 (en) |
NZ (1) | NZ548565A (en) |
PL (1) | PL1724226T3 (en) |
PT (2) | PT1555234E (en) |
SI (1) | SI1724226T1 (en) |
WO (1) | WO2005066060A1 (en) |
ZA (1) | ZA200606452B (en) |
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2004
- 2004-01-06 DK DK04405008T patent/DK1555234T3/en active
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