EP2497741B1 - Seilrolle - Google Patents
Seilrolle Download PDFInfo
- Publication number
- EP2497741B1 EP2497741B1 EP11001926.2A EP11001926A EP2497741B1 EP 2497741 B1 EP2497741 B1 EP 2497741B1 EP 11001926 A EP11001926 A EP 11001926A EP 2497741 B1 EP2497741 B1 EP 2497741B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wear
- sheave
- marker
- pulley
- groove
- 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.)
- Active
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
Definitions
- the invention relates to a pulley, comprising a roller body with a roller ring, wherein the roller body has a hub in its center and in the roller ring, a groove for guiding the rope is formed, which has a groove bottom.
- Pulleys of the type mentioned are known in many ways. They serve to deflect ropes on cranes, excavators, cable cars and the like.
- the rollers in the groove bottom are subject to wear. Although it is trying to reduce the wear of the pulley and wire rope by the use of lubricants on the wire rope; Nevertheless, the wear can not be completely prevented. Since the wear limits the life of the pulleys, it is necessary to control the wear of the respective pulley. Here, it is only possible to measure the groove depth, ie the distance between the outermost circumference of the roller body and the groove bottom. However, this type of control is complex and also inaccurate, since an exact determination of the wear is hardly possible due to the manufacturing tolerances.
- a pulley is known in which a wear detection element is inserted into the roller ring from the outside. From the US 4,441,692 A. In addition, a pulley is known in which in the rope leading groove a wear strip made of soft, elastic material is used.
- the invention has for its object to provide a pulley, which allows a simple yet reliable control of wear in the rope groove. According to the invention, this object is achieved in that provided in the groove bottom means for indicating the role wear, wherein the means of at least one blind bore formed, in which a mark is inserted, wherein the mark has a through hole.
- a pulley is created in which the control of the wear of the rope groove is possible in a simple manner. Due to the arrangement of the means for indicating wear in the groove base in the control, it is possible to examine only the means and thereby determine the previously occurring wear. In the wear indicator only mechanical components or mechanical processing of the pulley find application. It is thus a very simple and at the same time extremely reliable way of attaching a wear indicator.
- the through hole allows in addition to the created by the inventive marker control of the wear of the pulley and a control of the residual depth until reaching the allowable wear of the pulley. Thus, the remaining life of the pulley can be determined using the inventive design in a simple manner.
- the marking can be introduced positively, positively or materially into the blind bore.
- Each of the above-mentioned possibilities of arrangement of the marking represents a reliable method of attachment.
- the individual types of attachment can be easily integrated into the production process of the pulley.
- the material of the marking has a lower degree of hardness than the material in the groove bottom.
- the formation of the mark with a lower degree of hardness ie the use of a softer material, prevents the mark may possibly be inferior in duration wear less than the groove bottom itself, which would lead to a distortion of the indication of wear by the mark.
- By the softer training of the mark would lead through the mark. Due to the softer design of the marking is also ensured that no protrusion forms through the wear on the groove bottom and thus a possible damage to the rope.
- the mark has a different color than the groove bottom.
- a simple findability of the mark is caused in the groove bottom, whereby the verification of wear is further simplified.
- the means for wear indication are formed by a transmitter.
- a transmitter By using a transmitter, it is possible to perform a non-contact control of wear. On a visual inspection of the wear indicator can thus be omitted, which also facilitates the control.
- a marking is provided on the circumference of the roller ring in the region of the marking.
- the marking is used to facilitate finding the mark in case of visual inspection. This is a considerable relief for controlling the depth of wear, in particular due to the lubricants usually present in the groove base.
- the pulley selected as the embodiment consists of a roller body 1 and a roller ring 2.
- the roller body 1 has a hub 3 in its center.
- the hub 3 serves to receive a bearing, with which the pulley is then placed on the arranged on the respective crane or the like shaft.
- the reel body 1 and the roller ring 2 are made of steel.
- the roller body 1 has at least one web 5, which form the region between the hub 3 and the roller ring 2.
- a rope pulley is shown in soupstegiger execution. Consequently, the pulley on two webs 5 and 5 '.
- the webs 5 are each welded to the hub 3 and the roller ring 2.
- FIG. 3 is a pulley shown in one-time execution, which is why only one web 5 is present.
- the web 5 is welded only to the hub 3; the roller ring 2, however, cold rolled in the web 5.
- a groove 6 for guiding the rope 4 is formed in the roller ring 2.
- the groove 6 has a groove bottom 7.
- the groove 6 has a substantially V-shaped configuration, wherein the groove bottom 7 is formed in the form of a radius.
- the radius of the groove bottom 7 is selected depending on the diameter of the rope used.
- the depth of the groove 6 and the width of the roller ring 2 are selected in coordination with the respective rope.
- the groove bottom 7 may additionally be hardened. In cold-rolled steel, it usually has a hardness of approx. 220 to 230 HB.
- means 8 are provided for indicating the role wear.
- the means 8 are formed in the embodiment of a blind bore 9, in which a marker 10 is inserted.
- the marking can be incorporated in a positive, non-positive or cohesive manner.
- the marker 10 is glued into the blind bore 9.
- the mark can also be pressed into the blind bore, soldered, welded or the like.
- the marker 10 has a through hole 11, so that the mark has an annular configuration in the embodiment.
- a plurality of markings 10 may be provided in the groove bottom 7.
- the marker 10 is made in the embodiment of brass. It therefore has a lower degree of hardness than the material in the groove bottom 7.
- the hardness of the marking is in the exemplary embodiment about 70 HB.
- the marker 10 has a different color than the groove bottom 7 due to the different choice of material.
- an identification 12 is provided in the region of the marking 10.
- the marking 12 is formed in the embodiment in a simple manner of two notches. If necessary, the notches can be hammered into the roller ring 2 manually in a simple manner.
- An intellectual connection of the two markings 12 by a straight line passes through the center of the blind bore 9, so that the measures provided in the groove bottom 7 means 8 for displaying the role wear can be found in a simple manner.
- the means 8 are formed by a transmitter.
- a transmitter As a means for indicating wear different configurations of the transmitter are possible.
- transmitters come into consideration that work without a permanent power supply.
- so-called RFID transmitters come into consideration.
- roller wear indicating means 8 makes it possible to determine the exact state of wear of the cable pulley without complex measurements.
- the mechanical control it is only necessary to locate those locations where the means 8, for example in the form of the marker 10, are located.
- this is also particularly easy for the case for which lubricant is in the groove bottom 7 and thus the mark 10 is recognizable only when the lubricant is eliminated.
- a visual inspection of the marker can be done.
- the control is carried out in that the marker 10 is still present.
- the wear limit of the pulley is reached. If several markings 10 are provided in the groove bottom 7, they can be provided with different material thicknesses. In this way, the wear can be determined at least in stages. Depending on the visible marks, the remaining life can be determined. When using the marking 10 in the form of a ring, as shown in the figures, it is possible to continuously determine the wear, in which the depth of the hole in the mark 10 is measured. Thus, it can be determined at an early stage during regular checks, how long the pulley can still be used.
- the differently colored design of the marker 10 offers the possibility of finding the marker 10 even if the groove bottom 7 is heavily contaminated, if no marker 12 is provided on the roll collar 2.
- the also selected lower wear resistance of the marker 10 due to the lower degree of hardness in relation to the material of the groove bottom 7 also leads to a reliable wear of the marker 10, which is in any case less than the wear of the groove bottom 7.
- the mark 10th has less wear than the groove bottom 7, which would lead to a faulty inspection result.
- a pulley is created by the inventive design, which provides a reliable control of wear allows. As a result, the reliability of the pulleys is permanently guaranteed, since the maximum possible wear of the pulley is timely recognizable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES11001926.2T ES2470330T3 (es) | 2011-03-09 | 2011-03-09 | Polea de cable |
| DK11001926.2T DK2497741T3 (da) | 2011-03-09 | 2011-03-09 | Tovtrisse |
| EP11001926.2A EP2497741B1 (de) | 2011-03-09 | 2011-03-09 | Seilrolle |
| PL11001926T PL2497741T3 (pl) | 2011-03-09 | 2011-03-09 | Krążek linowy |
| SM201400073T SMT201400073B (it) | 2011-03-09 | 2014-06-18 | Carrucola |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11001926.2A EP2497741B1 (de) | 2011-03-09 | 2011-03-09 | Seilrolle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2497741A1 EP2497741A1 (de) | 2012-09-12 |
| EP2497741B1 true EP2497741B1 (de) | 2014-04-09 |
Family
ID=44359683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11001926.2A Active EP2497741B1 (de) | 2011-03-09 | 2011-03-09 | Seilrolle |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2497741B1 (da) |
| DK (1) | DK2497741T3 (da) |
| ES (1) | ES2470330T3 (da) |
| PL (1) | PL2497741T3 (da) |
| SM (1) | SMT201400073B (da) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11492230B2 (en) | 2018-08-20 | 2022-11-08 | Otis Elevator Company | Sheave liner including wear indicators |
| US11718501B2 (en) | 2020-04-06 | 2023-08-08 | Otis Elevator Company | Elevator sheave wear detection |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3130555B1 (en) * | 2015-08-12 | 2020-11-11 | KONE Corporation | Rope and rope groove monitoring |
| DE202019102212U1 (de) * | 2019-04-17 | 2019-05-13 | C. U. A. Heiderich Gmbh | Rolle |
| WO2025131639A1 (en) * | 2023-12-19 | 2025-06-26 | Inventio Ag | A wear-indicating roller assembly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441692A (en) * | 1982-04-30 | 1984-04-10 | Wyrepak Industries, Inc. | Rubber-lagged sheave |
| US5419415A (en) * | 1992-12-21 | 1995-05-30 | Inventio Ag | Apparatus for monitoring elevator brakes |
| JP5195437B2 (ja) * | 2009-01-06 | 2013-05-08 | 新日鐵住金株式会社 | シーブおよびつり上げ装置 |
-
2011
- 2011-03-09 DK DK11001926.2T patent/DK2497741T3/da active
- 2011-03-09 ES ES11001926.2T patent/ES2470330T3/es active Active
- 2011-03-09 PL PL11001926T patent/PL2497741T3/pl unknown
- 2011-03-09 EP EP11001926.2A patent/EP2497741B1/de active Active
-
2014
- 2014-06-18 SM SM201400073T patent/SMT201400073B/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11492230B2 (en) | 2018-08-20 | 2022-11-08 | Otis Elevator Company | Sheave liner including wear indicators |
| US11718501B2 (en) | 2020-04-06 | 2023-08-08 | Otis Elevator Company | Elevator sheave wear detection |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2497741A1 (de) | 2012-09-12 |
| SMT201400073B (it) | 2014-09-08 |
| DK2497741T3 (da) | 2014-06-30 |
| PL2497741T3 (pl) | 2014-08-29 |
| ES2470330T3 (es) | 2014-06-23 |
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