EP3652101A1 - Deflection roller in a flexible drive - Google Patents
Deflection roller in a flexible driveInfo
- Publication number
- EP3652101A1 EP3652101A1 EP18720590.1A EP18720590A EP3652101A1 EP 3652101 A1 EP3652101 A1 EP 3652101A1 EP 18720590 A EP18720590 A EP 18720590A EP 3652101 A1 EP3652101 A1 EP 3652101A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- deflection
- pulleys
- pulley
- elevator
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000012791 sliding layer Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 108010066114 cabin-2 Proteins 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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 deflection roller in a traction mechanism drive, preferably in an elevator drive with elevator belt, wherein the deflection roller is rotatably mounted and a plurality of arranged on a shaft deflection pulleys for or the traction means, wherein the traction means or suspension means the deflection roller or Slices on an outer circumferential surface over a partial circumference rotates or wraps around.
- a traction drive usually a number of pulleys are required to guide the traction means and deflect, that drive rollers, driven rollers,
- Clamping devices, etc. remain in compliance with regulations and at the same time the spatial and geometric features, the dimensions and the required installation space of other machine parts is taken into account. This is the case in a special way in elevator systems, in which the
- Elevator car moves within a narrow elevator shaft and usually hangs on several ropes, which also move corresponding counterweights.
- the elevator belts or the carrying straps are guided in the elevator shaft by a series of deflection rollers in such a way that the elevator cage and counterweights can be driven safely via one or more drive rollers and can travel precisely up and down within the shaft.
- Elevator straps or carrying straps used in parallel. These straps are guided over a common traction sheave / drive pulley with which the
- the running speed of the support means substantially corresponds to the peripheral speed of the traction sheave and is provided by possibly provided pulleys to an integer fraction of the
- Transfer driving speed of the car is therefore basically determined by the number of pulleys on the elevator car and counterweight.
- Speed of the suspension element is then twice as high as the speed of travel of the car in the shaft.
- Elevator systems a plurality of support means are guided side by side over one and the same pulley. These wider pulleys are then designed so that their outer surface corresponding to multiple spherically or profiled formed areas which are separated by separating flanged wheels so that the support means adjacent to each other, but separated from each other can circulate the pulley.
- a plurality of parallel support means or straps are guided over the same pulley, resulting in the interaction between pulleys and suspension often quite significant noise problems. Namely, there are small due to elongation or expansion of the support means
- WO 2016-019135 AI discloses another solution to the noise problem in the form of a deflection roller whose deflection plate, which indeed interacts with the support means on its surface, by means of at least one bearing rotatably mounted on the shaft of the Guide roller is mounted.
- the bearing shown there is not specified. Only in the figures, a conventional ball bearings can be detected.
- the solution presented here includes a construction in which the entire and only storage of the deflection roller in the storage of deflection plates on the shaft. In principle, therefore, the hitherto usual storage of fixedly connected to the pulleys pulley at both ends of its shaft was abandoned in favor of a storage of the pulleys directly on the then fixed at both ends shaft.
- Such a solution is relatively complicated, especially if each of the deflection plates must be stored with individual bearings on the shaft of the guide roller. If, however, on the other hand, a plurality of fixedly connected pulleys on optionally one
- the object was to provide a pulley, in which said noise effects do not occur or at least greatly reduced, even if the same pulley is used for several adjacent straps, which has a simple and inexpensive construction and a high durability provides.
- the deflection plates are arranged to be slidable relative to the shaft so as to be able to slide, so that it is rotatable on the shaft in the region of the sliding friction.
- Rotational mobility in Gleitreibungs Symposium be compensated for low relative movements between the deflection of the individual juxtaposed support means and the shaft of the guide roller and not transmitted from one deflection pulley to the other.
- the slidable rotation provided here is not to be compared with a plain bearing, which is used in the range of very high speeds, for example, for crankshafts.
- the connection formed here between deflecting pulley and shaft is indeed free of play and to a small degree frictionally, but still rotatable / rotatable under
- the shaft can be formed here, for example, steel, while the deflection plate consists at least in the region of the hub of a lubricious plastic.
- a plastic of high strength and low coefficient of friction can be used here in the region of the hub.
- special polyamides or HDPE High Density Polyethylene
- the deflection discs can also be made entirely of such a plastic, if the load in the respective application allows this.
- in particular contributes to an advantageous development, which consists in the fact that the deflection plates are arranged side by side and arranged rotatable relative to the shaft and relative to each other for slidable movement.
- a further advantageous embodiment consists in that the deflection pulleys arranged next to one another have or form a flange on at least one side.
- Flush discs are used to guide the suspension / elevator belts and prevent the suspension means can abut or skip each other.
- a further advantageous embodiment is that between or next to the arranged on the shaft pulleys relative to the latter and the shaft slidably rotatable separate flanged wheels are arranged. This additionally prevents that Too strong rub the suspension elements on the flanges and heat up. In this way, the flanged wheels in the Gleitreibungs Scheme with twisting, if wear girths / suspension means.
- the rotational mobility between the pulleys with each other and between the pulleys and flanges is of course also achieved by the above-mentioned tolerance adjustment and material pairing.
- a further advantageous embodiment is that the shaft is hollow and the storage of the deflection roller takes place within the hollow shaft.
- Deflecting discs are arranged sliding rotatable receiving sleeves, i. So between the outer surface of the shaft and the inner surface of the
- Hub / receiving bore of the deflection plate sliding sleeves or slidable support sleeves are provided.
- the slidable rotatability of the deflection plate is provided by a sleeve on the shaft
- Mobility in the field of sliding friction can be provided very precisely by the choice of materials alone the sleeve.
- the shaft of such a deflection roller made of metal, preferably made of steel.
- a sliding sleeve arranged between deflecting disk and the shaft can then be produced from different materials, preferably from a plastic of high strength and low coefficient of friction.
- a plastic of high strength and low coefficient of friction preferably from a plastic of high strength and low coefficient of friction.
- special polyamides or HDPE High Density Polyethylene are suitable, as mentioned above.
- a further advantageous embodiment also in the sense of explosion and fire protection is that the receiving sleeves are designed antistatic and thus can accumulate no charges.
- a further advantageous embodiment consists in that the slidable rotatability of the deflecting disks on the shaft is provided by a sliding layer or sliding coating on the shaft, on the receiving sleeve or in the hub of the deflecting disks, preferably by a sliding layer or sliding coating with polytetrafluoroethylene.
- Fig. 2 shows one of the pulleys according to the invention an elevator system according to Fig. 1 in cross section.
- Fig. 1 shows a schematic diagram of an elevator system 1 in a 2: 1 suspension type, in which the cable ends are attached to the ceiling of a hoistway.
- Cabin 2 and counterweight 3 each hang by means of deflection rollers 4a, 4b on the support means. 5
- the or the support means revolve a driven by a motor, not shown here traction or drive pulley 6, which between cabin and
- Counterweight is arranged in the upper region of the elevator shaft. This creates a simple pulley.
- the running speed of the support means 5 is then twice as high as the driving speed of the car 2.
- the tensile force is on the
- the support means 5 is executed here as a triple parallel guided belt.
- the pulleys of which one, namely the guide roller 4 on the car roof, shown in cross section in Fig. 2, of three parallel running straps / Gurtgurt- parts 5 a, 5 b and 5 c looped around.
- the support belt 5 and, accordingly, all the carrying belt parts 5 a to 5 c are designed as a flat belt and reinforced with cords 7 as a tension member.
- the construction of the carrying strap can be seen in principle in the lower half of FIG. 2, namely where the carrying belt and the deflection pulleys are shown in section.
- the deflection rollers 4, in Fig. 2, the deflection roller 4a on the car, are rotatably mounted and have a plurality of arranged on a shaft 8 deflecting disks 9a, 9b, 9c.
- the carrier belt 5 as traction means wraps around the deflecting disks 9a to 9c on an outer circumferential surface over a partial circumference.
- the deflecting discs 9a, 9b, 9c are on the and relative to the shaft 8 backlash, but slidably mounted.
- the deflecting disks 9a, 9b, 9c are between the bearings 10 of a two-sided
- Shaft bearing arranged side by side and formed relative to the shaft 8 and also relative to each other slidably rotatable.
- the deflection pulleys 9a, 9b, 9c arranged next to each other form, on one side, a flange I 1a, 1 lb and 11 c.
- a separate, in addition to the right on the shaft 8 arranged deflecting disc 9c arranged flange 1 ld is provided which is formed relative to the guide pulley 9c and the shaft also in the manner of the invention slidably rotatable.
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017212076.2A DE102017212076A1 (en) | 2017-07-14 | 2017-07-14 | Deflection pulley in a traction mechanism drive |
PCT/EP2018/060687 WO2019011494A1 (en) | 2017-07-14 | 2018-04-26 | Deflection roller in a flexible drive |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3652101A1 true EP3652101A1 (en) | 2020-05-20 |
EP3652101B1 EP3652101B1 (en) | 2023-09-13 |
Family
ID=62063541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18720590.1A Active EP3652101B1 (en) | 2017-07-14 | 2018-04-26 | Deflection roller in a flexible drive |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3652101B1 (en) |
DE (1) | DE102017212076A1 (en) |
WO (1) | WO2019011494A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1121220A (en) * | 1966-10-10 | 1968-07-24 | Otis Elevator Co | Noise abating and traction improving elevator sheave |
JPH107351A (en) * | 1996-06-20 | 1998-01-13 | Hitachi Ltd | Elevator |
CN106232515B (en) * | 2014-05-16 | 2019-07-26 | 因温特奥股份公司 | Lift facility |
EP3174820B1 (en) | 2014-07-31 | 2020-09-02 | Otis Elevator Company | Sheave for elevator system |
EP3056461B1 (en) * | 2015-02-12 | 2017-09-06 | Kone Corporation | Arrangement and elevator |
DE202015103087U1 (en) * | 2015-06-12 | 2016-09-19 | Schwartz Gmbh | idler pulley |
-
2017
- 2017-07-14 DE DE102017212076.2A patent/DE102017212076A1/en active Pending
-
2018
- 2018-04-26 WO PCT/EP2018/060687 patent/WO2019011494A1/en unknown
- 2018-04-26 EP EP18720590.1A patent/EP3652101B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3652101B1 (en) | 2023-09-13 |
DE102017212076A1 (en) | 2019-01-17 |
WO2019011494A1 (en) | 2019-01-17 |
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