EP1471030B1 - Poulie d'entraînement pour élévateur et sa méthode de production - Google Patents
Poulie d'entraînement pour élévateur et sa méthode de production Download PDFInfo
- Publication number
- EP1471030B1 EP1471030B1 EP20040008524 EP04008524A EP1471030B1 EP 1471030 B1 EP1471030 B1 EP 1471030B1 EP 20040008524 EP20040008524 EP 20040008524 EP 04008524 A EP04008524 A EP 04008524A EP 1471030 B1 EP1471030 B1 EP 1471030B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hardened
- sectors
- traction sheave
- drive pulley
- sector
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title description 7
- 238000000034 method Methods 0.000 claims description 12
- 230000006698 induction Effects 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims 2
- 239000000463 material Substances 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 238000005266 casting Methods 0.000 description 8
- 239000010439 graphite Substances 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910052595 hematite Inorganic materials 0.000 description 2
- 239000011019 hematite Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 235000005805 Prunus cerasus Nutrition 0.000 description 1
- 235000009226 Prunus puddum Nutrition 0.000 description 1
- 244000207449 Prunus puddum Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- the invention relates to a traction sheave for elevators and their manufacturing method.
- traction sheaves for elevators are currently made of lamellar graphite-containing cast iron ( ⁇ V 200, or ⁇ V 250).
- ⁇ V 200 lamellar graphite-containing cast iron
- hematite gray cast iron with a surcharge of ferrosilicon is used as the basic material for production.
- the traction sheave from the casting is completed by relaxation (See, for example, the book of Dr. Vero and Dr. Käldor: "Metallurgy of Iron Alloys", Technical Book Publishing, Budapest, 1966, page 282-299 ; or the textbook of Dr. Gillemot: The Technology of Construction Materials. "Vol. I., Lehrbuch-Verlag, Budapest, 1954 ).
- the traction sheaves produced by the above technology can not reach an acceptable service life, even under very careful operating conditions, because the too rapid wear of the cast-iron cable grooves through the steel cable necessitates premature wire replacement.
- the cost of maintaining the system is considerably increased, quite apart from the inevitable downtime costs of the elevators, which provide especially for multi-storey residential buildings for the residents difficult tolerable inconvenience, loss of time and annoyances. It would be acceptable for the operators of such facilities if the lifetime of the "traction sheave - steel rope" combination would permit at least one use cycle of about 10 years.
- this desirable characteristic today not even approximated with the pulleys made of lamellar graphite cast iron can be achieved.
- the maximum permissible groove pressure depends on the hardness of the groove material.
- the patent document DE 1120702 discloses a traction sheave with two sectors (2, 3), wherein the sector (2) consists of a cast alloy G Al Si and the sector (3) consists of a softer leather-like thermoplastic.
- Task for the introduction of the thermoplastic material is the improvement of Seilmitticalose.
- Object of the present invention is to overcome this drawback and to propose a traction sheave for lifts and their manufacturing process, which traction sheave is hardened and is not prone to cracking or does not tend to crack.
- a traction sheave which traction sheave has at least two sectors, wherein at least one sector is hardened and at least one sector is not hardened.
- the traction sheave is cast or manufactured in one piece.
- hardening during hardening is easier to solve and the likelihood of cracking is therefore reduced.
- Hardness is understood to mean any mechanical, thermal or chemical process which modifies the microstructure of a material and thereby increases its hardness.
- the surface of the traction sheave is here meant the outer cylindrical surface of the traction sheave, which carries the cables and which is worn during the elevator operation.
- the sectors of the traction sheave are defined here as the cylindrical circular cut-outs of the traction sheave, which are delimited and measured in an angular range from the center of the traction sheave.
- the angle of the sector is limited by the two sector sides and.
- Hardening of a sector means both the formation of a thin hardened layer on the surface of the traction sheave, which is subject to the angular range of the sector, or the hardening of the material of this sector below the surface of the traction sheave.
- Fig. 1 shows a hardened traction sheave 1 for lifts according to a preferred embodiment of the present invention.
- a six-furled traction sheave of 638 mm nominal diameter is fabricated.
- base material is based in a known manner from the hematite Grundroheisen, the 4.3 - 4.6% coal, 0.0015 - 0.05% manganese; 2.26 - 2.75% silicon and 0.035 - 0.11% phosphorus.
- ferrosilicon is added to the molten base pig iron as alloying material containing 73% silicon, 0.7% manganese, 0.1% phosphorus and 0.08% sulfur.
- the sulfur content of the molten bath is reduced below 0.01%, in this case to 0.008%, or adjusted.
- magnesium coke is used, which reaches the molten bath at 1480 ° C temperature. The introduction of the magnesium coke into the molten bath takes place in such a way that this aggregate is introduced below the level of the molten bath.
- the secondary modification with ferrosilicon is carried out to improve the homogeneity of the base fabric.
- the cooled cast piece is normalized for relaxation.
- the cast piece is preheated in the oven in a known manner to 920 ° C, and - after 4 hours keeping warm at this temperature in the oven - cooled to 900 ° C.
- the cooled casting is finished in a known manner to the nominal dimensions.
- hardness values: HB 210-260 kp / mm 2 are measured on the rope guide sheath (with a ball of 10 mm diameter, with a load of 30 kN).
- the spheroidal graphite iron contains: 2.8 to 3.15% coal; 2.8-3.1 silicon; Max. 0.3% manganese; Max. 0.2% phosphate; as well as 0.008% sulfur.
- Such a cast piece can be easily broken, as the conventional cast iron from lamellar graphite, which is for the cutting tools z. B. gives a 30% longer life. As a result, the cost of a longer life of the tools is further reduced.
- the workpiece is subjected to a subsequent heat treatment with subsequent hardening after finishing.
- This heat treatment aims to further increase the hardness of the surface 2 of the traction sheave, and in particular the hardness of the surface of the grooves while avoiding cracking.
- This heat treatment of the groove surface is carried out by hardening, or by one, done at 850 ° C flame hardening.
- the traction sheave which rotates at an adjustable speed, or its grooves are simultaneously heated with a special gas burner head.
- the heat-treated groove area is then immediately cooled, for example by rotating the traction sheave.
- the rotational speed, d. H. by the speed of the traction sheave, the thickness of the hardened layer 5 of the groove surface can be regulated, which in the preferred embodiment is 1 - 1.5 mm.
- the desired Glüh Anlagengrad can be determined and identified on the basis of the color (sour cherry red) in practice.
- Fig. 1 shows, for example, the hardened layer 5 of a sector with an angular range ⁇ .
- the angle ⁇ is limited by the sector sides 5a and 5b.
- a sector 3 of the traction sheave subject to an angular range ⁇ of 25 ° measured by the center is first hardened.
- the adjacent sector 4 of the traction sheave, which is subject to an angular range of 5 ° measured by the center, is then not hardened.
- the sectoral hardening of the angular ranges is carried out over the entire circle of the traction sheave, ie 12 times 25 ° hardened separated by 12 times 5 ° uncured.
- the traction sheave consists of a regular series of hardened and non-hardened sectors.
- the sectors of the traction sheave are the preferred present embodiment of the invention sequentially hardened around the entire circumference of the surface of the traction sheave and not hardened.
- a simultaneous hardening of all sectors is also conceivable in principle. Irregular consequences of hardened and unhardened sectors are also possible.
- traction sheaves can be produced for the different loading conditions with the same, universally applicable technology, which then, if necessary, can be subjected to the above-described surface hardening process after finishing.
- the respective optimum surface hardness and wear resistance can be adjusted, since the spheroidal graphite material structure achieved with the method according to the invention offers the possibility for this purpose.
- a weight saving is achieved.
- the elevator pulleys produced by the above method have been subjected to normal stress, i. in a medium-high residential building of eight floors a - compared to the conventional elevator pulleys - significantly increased wear resistance and can therefore be operated much longer. As a result, however, the sum of forced downtime can be significantly reduced.
- the depth of the cured material can be varied as desired. In the minimum case, only a thin layer of the traction sheave surface is hardened, which is a few microns. In the extreme case, an entire sector of the traction sheave is hardened, with the hardened zone reaching the center of the traction sheave.
- the sectorally hardened traction sheaves of elevator drives find use regardless of the type of drive, i. with gearbox, gearless or Riemenvorgelege.
- both the sectoral hardening over the peripheral surface of the traction sheave as well as a segment-wise hardening of the traction sheave has a positive effect.
- the hardened segments may be perpendicular to the rope groove or they may be at an angle, so diagonal to the traction sheave surface.
- the same hardening is also possible with split sheaves, with post-processing, i. a regrinding of the grooves, necessary to ensure the smoothness of high-speed elevators.
Landscapes
- Pulleys (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Claims (8)
- Poulie d'entraînement (1) pour ascenseurs avec au moins deux secteurs (3, 4), les secteurs (3, 4) étant définis comme des secteurs de cercle cylindriques de la poulie qui sont délimités par rapport au centre de la poulie (1) dans une plage angulaire (α) , caractérisée en ce que les secteurs (3, 4) se composent du même alliage métallique, l'un au moins des secteurs (3) étant trempé tandis qu'au moins un autre secteur (4) n'est pas trempé.
- Poulie d'entraînement pour ascenseurs selon la revendication 1, caractérisée en ce qu'au moins un secteur dans la plage angulaire (α) de 15 ° à 35 ° est trempé et au moins un secteur dans la zone angulaire de 1° à 15 ° n' est pas trempé.
- Poulie d'entraînement pour ascenseurs selon les revendications 1 à 2, caractérisée en ce qu'au moins un secteur est trempé par induction et/ou à la flamme.
- Poulie d'entraînement pour ascenseurs selon les revendications 1 à 3, caractérisée en ce qu'elle se compose d'une succession régulière de secteurs trempés et de secteurs non trempés.
- Procédé pour fabriquer des poulies d'entraînement (1) pour ascenseurs avec au moins deux secteurs (3, 4), les secteurs (3, 4) étant définis comme des secteurs de cercle cylindriques de la poulie qui sont délimités par rapport au centre de la poulie (1) dans une plage angulaire (α), caractérisé en ce que les secteurs (3, 4) se composent du même alliage métallique, l'un au moins des secteurs (3) étant trempé tandis qu'au moins un autre secteur (4) n'est pas trempé.
- Procédé selon la revendication 5, caractérisé en ce qu'au moins un secteur dans la plage angulaire (α) de 15° à 35° est trempé et au moins un secteur dans la zone angulaire de 1° à 15° n'est pas trempé.
- Procédé selon les revendications 5 à 6, caractérisé en ce qu'au moins un secteur est trempé par induction et/ou à la flamme.
- Procédé selon les revendications 5 à 7, caractérisé en ce que les secteurs de ladite poulie sont successivement trempés et non trempés, sur toute la circonférence de la surface de la poulie d'entraînement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040008524 EP1471030B1 (fr) | 2003-04-22 | 2004-04-08 | Poulie d'entraînement pour élévateur et sa méthode de production |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03405278 | 2003-04-22 | ||
EP03405278 | 2003-04-22 | ||
EP20040008524 EP1471030B1 (fr) | 2003-04-22 | 2004-04-08 | Poulie d'entraînement pour élévateur et sa méthode de production |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1471030A1 EP1471030A1 (fr) | 2004-10-27 |
EP1471030B1 true EP1471030B1 (fr) | 2009-07-29 |
Family
ID=32963799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040008524 Expired - Lifetime EP1471030B1 (fr) | 2003-04-22 | 2004-04-08 | Poulie d'entraînement pour élévateur et sa méthode de production |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1471030B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1886957A1 (fr) | 2006-08-11 | 2008-02-13 | Inventio Ag | Courroie d'élévateur pour un élévateur et procédé de fabrication d'une telle courroie d'élévateur |
DE202008001786U1 (de) | 2007-03-12 | 2008-12-24 | Inventio Ag | Aufzugsanlage, Tragmittel für eine Aufzugsanlage und Vorrichtung zur Herstellung eines Tragmittels |
DE102007046231A1 (de) | 2007-09-26 | 2009-04-09 | Rudolf Fuka Gmbh | Treibscheibe für Seile und/oder Riemen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120702B (de) * | 1956-02-25 | 1961-12-28 | Walter Oxe | Verwendung einer Aluminiumgusslegierung zur Herstellung des Rillenfutters von Drahtseil-Treibscheiben |
DE1042307B (de) * | 1956-08-17 | 1958-10-30 | Walter Oxe | Seilscheibe |
DE1162155B (de) * | 1962-01-11 | 1964-01-30 | Pohlig Heckel Bleichert | Seilscheibengetriebe mit einer Schuhkette |
-
2004
- 2004-04-08 EP EP20040008524 patent/EP1471030B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1471030A1 (fr) | 2004-10-27 |
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