WO2018166978A1 - Courroie destinée à porter une cabine et/ou un contre-poids d'une installation d'ascenseur et poulie destinée à guider une telle courroie - Google Patents

Courroie destinée à porter une cabine et/ou un contre-poids d'une installation d'ascenseur et poulie destinée à guider une telle courroie Download PDF

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Publication number
WO2018166978A1
WO2018166978A1 PCT/EP2018/056096 EP2018056096W WO2018166978A1 WO 2018166978 A1 WO2018166978 A1 WO 2018166978A1 EP 2018056096 W EP2018056096 W EP 2018056096W WO 2018166978 A1 WO2018166978 A1 WO 2018166978A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
ribs
angle
grooves
roller
Prior art date
Application number
PCT/EP2018/056096
Other languages
German (de)
English (en)
Inventor
Oliver Berner
Oliver Simmonds
Robert Stalder
Florian Dold
Original Assignee
Inventio Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Inventio Ag filed Critical Inventio Ag
Publication of WO2018166978A1 publication Critical patent/WO2018166978A1/fr

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B15/00—Main component parts of mining-hoist winding devices
    • B66B15/02—Rope or cable carriers
    • B66B15/04—Friction sheaves; "Koepe" pulleys

Definitions

  • Belt for supporting a car and / or a counterweight of an elevator installation and roller for guiding such a belt
  • the invention relates to a belt for supporting a car and / or a counterweight of an elevator installation, wherein the belt comprises a plurality of tension members extending in the longitudinal direction of the belt and a jacket in which the tension members are embedded.
  • the belt has a first side and a second side opposite the first side, wherein at least the first side has a plurality of grooves extending in the longitudinal direction of the belt and wherein the longitudinal center axes of the tension members and thus the tension members themselves lie in one plane.
  • the invention relates to a role for guiding such a belt.
  • the belts In order to prevent lateral slipping of the belts from the rollers over which they are guided, the belts have ribs and the rollers for this purpose substantially complementary grooves, in which the ribs reach into.
  • the ribs are formed so as to give V-shaped grooves, the lateral flanks of the belts in particular each at an angle of 45 ° to the plane defined by the center axes of the tension members and thus to the flat back of the belt. This results in a wedge angle, ie an opening angle of the grooves of 90 °.
  • Belts for elevator systems are known, for example, from the document US 2015/024891 AI. Belts with other rib geometries, but which are not suitable for elevators, are known for example from US Pat. No. 3,634,572.
  • a disadvantage of the known belts for elevator systems is that, in a diagonal pull, the belts tend to rise within the grooves of the rollers, so that it can happen that the belts jump out of the grooves. This so-called belt skid deteriorates the running properties of the belts on the rollers.
  • the cross section of the ribs are each formed such that at least one edge of the ribs or, for non-rectilinear edges, a tangent to a portion of the flank of the ribs relative to the plane defined by the center axes of the tension members at an angle between 50 ° and 80 ° is arranged. This results in a wedge angle between 80 ° and 20 °.
  • the first side of the opposite side of the belt is particularly flat.
  • the flanks of the ribs or, in the case of non-linear flanks, a tangent applied to the bent flanks, at least in a partial region have an angle between 50 ° and 80 ° relative to the second side of the belt.
  • the flanks can be formed in particular straight or curved.
  • the flank itself has an angle between 50 ° and 80 ° relative to the plane defined by the center axes of the tension members.
  • the ribs are designed such that a curved cross-section results, then at least a partial region of the rib geometry is selected such that a tangent applied in this partial region encloses an angle between 50 ° and 80 ° with the plane of the central axes.
  • the tensile carriers are arranged in particular completely outside the ribs.
  • the ribs are formed exclusively of the material of which the jacket is made. This is in particular a polymer, for example PU or EPDM.
  • the cross-section of the ribs is each formed such that a first portion of the flanks of the ribs relative to the plane of the central axes at a first angle and that a second portion of the edges of the ribs relative to the plane of the center axes in one of the first angle passes different second angle.
  • the first partial region is arranged closer to the plane of the central axes than the second partial region, wherein the first angle is greater than the second angle.
  • the susceptibility to a belt jump depends in particular on the ascent of the belt on the rollers across the direction of travel. The greater this ascending power, the easier the belt can rise in the grooves of the rollers and cause a belt jump.
  • the ascent force is largely determined by two factors, namely the geometry of the grooves and the friction coefficient between the belt material and the material of the rollers.
  • a geometry with decreasing angle with increasing distance to the plane of the center axes is achieved that when ascending the belt within the grooves at some point only the portion with the smaller angle is in contact with the roller and thus the forces acting transversely to the direction of lower forces become, whereby the ascending power and thus the danger of further ascending the belt is increasingly lower.
  • a self-locking occurs, that is, the further the belt ascends in the groove, the For rising forces responsible are getting smaller and thus further upgrades are avoided and in particular takes a running back of the belt in the grooves.
  • the angle decreases progressively with increasing distance from the plane of the central axes, so that the transverse forces are getting smaller and smaller and thus a continuous reduction of the ascension is achieved.
  • the cross section of the ribs is selected such that an arcuate contour results.
  • This arcuate contour on the one hand has the advantage that the angle relative to the plane of the central axes with increasing distance is continuously smaller and thus enters the self-locking described above, but on the other hand, with V-shaped contours existing at steep angles, risk of entrapment of the ribs in the grooves of the rollers is avoided by the arcuate geometry. Furthermore, a high traction in the running direction with simultaneously low susceptibility to rise in diagonal pull can be achieved by the corresponding shape of the arcuate contour.
  • circular segment-shaped, in particular semicircular, ribs are used, which have a corresponding self-locking by the changing angle and a low tendency to pinch.
  • elliptical ribs may be used.
  • circular-segment or semicircular ribs with a flattened top i. h., That the "tips" of the ribs in particular have a planar surface, which is preferably parallel to the plane of the central axes.
  • the ribs may also be rectilinear, in which case the flanks relative to the plane of the central axes at an angle between 50 ° and 80 °, preferably between 52.5 ° and 75 °, in particular between 65 ° and 75 ° , are arranged.
  • the flanks of the ribs each have a first and a second region, wherein the first region is arranged closer to the plane of the central axes than the second region and wherein the surfaces of the flanks each have a greater coefficient of friction in the first region than in the second area.
  • a fabric can be applied in the second region, which ensures that in this second region the coefficient of friction is less than in the non-woven first region.
  • the size of the first region is preferably chosen such that nevertheless sufficient traction in the direction of travel is given.
  • the jacket of the belt can also be made in a two-layer construction in which the ribs in the second region are made of a different material than in the first region, wherein the material of the second region is chosen such that it has a lower friction value as the material in the first area.
  • the different friction values can also be achieved by a corresponding coating of the first and / or second region.
  • one of the two regions can be roughened to change the coefficient of friction or to be correspondingly smoothed in the opposite direction.
  • Another aspect of the invention relates to a roller for guiding a previously described belt in an elevator installation, wherein the running surface of the roller has a plurality of grooves, which grooves are formed complementary to the ribs of the belt.
  • These rollers ensure safe guidance of the belts with little risk of belt skidding.
  • the cross sections of the grooves are correspondingly designed in particular such that at least one flank of the grooves or, in the case of non-linear flanks, a tangent to the flanks of the grooves is arranged at an angle between 50 ° and 80 ° relative to the central axis of the rolls.
  • the grooves may each have an arcuate, a niksegmentförmi- gene, a semicircular or elhpsensegmentförmigen cross section.
  • the grooves each have an undercut, ie a depression within the groove bottom. This ensures that, if a belt should be damaged and the jacket is separated from the tension members, the tension members jam in the undercut and thus sufficient traction is ensured and slipping of the tension members and thus an uncontrolled movement of the car and the counterweight be avoided.
  • Another aspect of the invention relates to a device for supporting a car and a counterweight of an elevator system, the device comprising at least one belt of the type described above and at least one roller of the type described above, wherein the belt and the roller are selected such that the Geometries of the belt ribs and the roller grooves, apart from a possible undercut of the grooves, are formed substantially complementary to each other.
  • the essentially complementary formation of the grooves is understood in particular to mean that the flanks of the ribs and the grooves are shaped complementary to one another. However, in particular, an undercut can be located in the groove bottom.
  • a further aspect of the invention relates to an elevator installation which comprises a car and a counterweight, wherein the car and the counterweight are connected to one another via at least one belt described above and are supported by this belt.
  • at least one of the previously described rollers is arranged on the counterweight and / or the elevator car, on which the belt is guided.
  • Fig. 1 is a schematic, highly simplified representation of an elevator installation
  • Fig. 2 is a sectional view of a belt according to a first embodiment of the invention
  • FIG. 3 shows a section of a roller for guiding the belt according to FIG. 2;
  • FIG. 4 shows an arrangement of a belt according to FIG. 2 and a roller according to FIG. 3;
  • Fig. 5 is a sectional view of a belt according to a second embodiment of the invention.
  • Fig. 6 is a schematic representation of a section of a roller for guiding a belt according to Fig. 5;
  • Fig. 7 is a sectional view of a belt according to a third embodiment of the invention.
  • FIG. 8 is a sectional view of a belt according to a fourth embodiment of the invention.
  • FIG. 9 shows a section of a roller for guiding a belt according to FIG. 8;
  • FIG. 10 is a sectional view of a belt according to a fifth embodiment of the invention.
  • FIG. 11 is a sectional view of a belt according to a sixth embodiment of the invention.
  • FIG. 1 shows a schematic, greatly simplified illustration of an elevator installation 100.
  • the elevator installation 100 has an elevator car 102 and a counterweight 104, which are supported by a belt 106.
  • the belt 106 is guided over several rollers 108 to 112 in this case. Further, the belt 106 is passed over a traction sheave 114 of a motor 116, through which the belt 106 can be moved in its longitudinal direction, whereby the position of the elevator car 102 and the counterweight 104 within the elevator shaft of the elevator installation 100 can be changed.
  • FIG. 2 shows a schematic sectional view through a belt 10, as used in elevator systems 100 for carrying the counterweight 104 and the elevator car 102.
  • the belt 10 has a multiplicity of tension members extending in the longitudinal direction of the belt, that is to say in the illustration in FIG. 2, into the image plane, one of which is designated by the reference numeral 12 by way of example.
  • These tension members 12 are in particular thin steel cables or fiber tension members.
  • the tension members 12 are in this case arranged such that their longitudinal central axes are arranged in a common plane 14.
  • the tension members 12 are embedded in a jacket 16, which is in particular made of a plastic, preferably a polymer.
  • the belt 10 has a first side 16 and a first side 16 opposite plane second side 18. On the first side 16 a plurality of ribs are provided, one of which is designated by the reference numeral 20 by way of example.
  • the ribs are formed to have rectilinear side flanks 22 to provide approximately V-shaped grooves with a rounded bottom.
  • the cross section of the ribs 20 is selected such that the flanks 22 are arranged at a predetermined angle Wl relative to the plane 14. This angle Wl is 52.5 ° in the first embodiment of the invention shown in FIG. 2, so that a wedge angle W2 of 75 ° results.
  • the angle Wl can also be between 50 ° and 80 °, so that a wedge angle W2 between 80 ° and 20 ° results.
  • the belt 10 can be safely driven via the contact with the traction sheave 114.
  • a belt jump is certainly avoided.
  • the drifting of the belt 10 is reduced by the steeper flanks.
  • Fig. 3 is a section of a sectional view is shown by a roller 30, which serves for guiding the belt 10 according to the first embodiment.
  • the roller 30 has on its tread 32 a plurality of grooves, one of which is designated by the reference numeral 34 by way of example.
  • the grooves 34 are in this case formed such that they are shaped to be complementary to the ribs 20.
  • the flanks 36 of the grooves 34 have the same angle Wl relative to the longitudinal axis 39 of the roller 30 as the flanks 22 of the ribs 20 to the plane 14. This ensures a safe guiding of the belt 10 is achieved on the roller 30 and a belt jump of the belt 10 prevented.
  • the grooves 34 each have an undercut 38 at their bottom. This undercut serves to ensure sufficient traction between the now exposed tension members 12 and the roller 30 when the sheath 16 of the belt 10 would become loose.
  • the roller 30 may also be formed such that the grooves 34 have no undercut 38.
  • FIG. 4 is a schematic, perspective view of an arrangement of a belt 10 of FIG. 2 and a roller 30 shown in FIG. 3, wherein the belt 10 rests on the running surface 32 of the roller 30 and in each case a rib 20 in one of Grooves 34 engages.
  • FIG. 5 shows a sectional view through a belt 50 according to a second embodiment. Elements with the same structure or the same function have the same reference numerals.
  • the cross section of the ribs 20 is selected such that the flanks 22 have an angle Wl of 60 ° relative to the plane 14. This results in a wedge angle W2 of 60 °.
  • Wl angle relative to the plane 14.
  • W2 wedge angle
  • FIG. 6 shows a detail of a sectional view through a roller 60, which serves for guiding a belt 50 according to the second embodiment according to FIG.
  • the grooves 34 are in turn formed complementary to the shape of the ribs 20, so that in particular the flanks 36 have the same angle as the flanks 22.
  • an undercut 38 is again provided in the bottom of the grooves 34, which, however, may not be present in an alternative embodiment.
  • Fig. 7 is a sectional view is shown by a belt 70 according to a third embodiment.
  • This belt 70 has ribs 20, which are shaped according to the ribs 20 according to the second embodiment of FIG. 5.
  • a fabric 74 is applied in a second region 72 of the ribs 20, whereas in a first region 76 no fabric is provided.
  • the ribs 20 have a circular segment-shaped cross-section, wherein the "tips" of the ribs 20 are flattened and, in particular, have a planar surface which runs parallel to the plane 14.
  • Wl angle
  • the ribs 20 on the flanks 22 of the ribs 20 tangent 82 has with the plane 14 at an angle Wl, which is between 50 ° and 80 ° by this at least in a partial area steep angle is an ascension of the belt 80 in the Grooves 34 of the roller 90 and in particular a disengagement of the belt 80 from the grooves 34, ie a belt jump prevented.
  • a roller 90 which serves to guide the belt 80 of FIG.
  • the roller 90 has correspondingly circular segment-shaped grooves 34, wherein in the embodiment shown in Fig. 9, in turn, an undercut 38 is provided, which may not be present in an alternative embodiment, however.
  • Fig. 10 is a sectional view through a belt 92 according to a fifth embodiment of the invention is shown, wherein in this fifth embodiment, the ribs 20 each have a semi-circular cross-section.
  • Fig. 11 shows a section through a belt 94 according to a sixth embodiment of the invention, wherein the ribs 20 in this sixth embodiment ellipsensegmentförmige cross-sections, in particular schellipsenförmige, have cross-sections.

Landscapes

  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

L'invention concerne une courroie (10, 50, 70, 92, 94, 106) destinée à porter une cabine (102) et/ou un contre-poids (104) d'une installation d'ascenseur (100), comprenant plusieurs éléments de traction (12) s'étendant dans une direction longitudinale et une gaine (16), dans laquelle les éléments de traction (12) sont incorporés. En outre, la courroie (10, 50, 70, 92, 94) comprend plusieurs nervures (20) s'étendant dans une direction longitudinale, la section transversale des nervures (20) étant conçue de sorte qu'au moins dans une sous-région d'au moins un flanc (22) des nervures (20), le flanc (22) ou une tangente (82) appliquée au flanc (22) s'étende à un angle entre 50° et 80° par rapport à un plan (14) des éléments de traction (12). L'invention concerne en outre une poulie (30, 60, 90) destinée à guider une telle courroie (10, 50, 70, 92, 94, 106).
PCT/EP2018/056096 2017-03-13 2018-03-12 Courroie destinée à porter une cabine et/ou un contre-poids d'une installation d'ascenseur et poulie destinée à guider une telle courroie WO2018166978A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17160636 2017-03-13
EP17160636.1 2017-03-13

Publications (1)

Publication Number Publication Date
WO2018166978A1 true WO2018166978A1 (fr) 2018-09-20

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PCT/EP2018/056096 WO2018166978A1 (fr) 2017-03-13 2018-03-12 Courroie destinée à porter une cabine et/ou un contre-poids d'une installation d'ascenseur et poulie destinée à guider une telle courroie

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3738915A1 (fr) * 2019-05-15 2020-11-18 China Enfi Engineering Corporation Treuil koepe
WO2021233816A1 (fr) * 2020-05-18 2021-11-25 Inventio Ag Poulie de guidage de courroie pour porter une cabine et/ou un contrepoids d'un système d'ascenseur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634572A (en) 1968-12-23 1972-01-11 Dayco Corp Transmission belt and apparatus for and method of making same
EP1396458A2 (fr) * 2002-09-05 2004-03-10 ContiTech Antriebssysteme GmbH Ascenseur avec dispositif de transmission et suspension comprenant une couroie et des poulies
WO2006042427A1 (fr) * 2004-10-18 2006-04-27 Inventio Ag Ascenseur muni d'une courroie plate comme element porteur
US20100133046A1 (en) * 2007-03-12 2010-06-03 Inventio Ag Elevator system, suspension element for an elevator system, and device for manufacturing a suspension element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3634572A (en) 1968-12-23 1972-01-11 Dayco Corp Transmission belt and apparatus for and method of making same
EP1396458A2 (fr) * 2002-09-05 2004-03-10 ContiTech Antriebssysteme GmbH Ascenseur avec dispositif de transmission et suspension comprenant une couroie et des poulies
WO2006042427A1 (fr) * 2004-10-18 2006-04-27 Inventio Ag Ascenseur muni d'une courroie plate comme element porteur
US20100133046A1 (en) * 2007-03-12 2010-06-03 Inventio Ag Elevator system, suspension element for an elevator system, and device for manufacturing a suspension element
US20150024891A1 (en) 2007-03-12 2015-01-22 Inventio Ag Suspension element for an elevator system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3738915A1 (fr) * 2019-05-15 2020-11-18 China Enfi Engineering Corporation Treuil koepe
WO2021233816A1 (fr) * 2020-05-18 2021-11-25 Inventio Ag Poulie de guidage de courroie pour porter une cabine et/ou un contrepoids d'un système d'ascenseur

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