EP3973208A1 - Zahnriemen - Google Patents
ZahnriemenInfo
- Publication number
- EP3973208A1 EP3973208A1 EP20713249.9A EP20713249A EP3973208A1 EP 3973208 A1 EP3973208 A1 EP 3973208A1 EP 20713249 A EP20713249 A EP 20713249A EP 3973208 A1 EP3973208 A1 EP 3973208A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- belt body
- flexible material
- tension member
- minimum thickness
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/08—Toothed driving belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/06—Driving-belts made of rubber
- F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
- F16G1/10—Driving-belts made of rubber with reinforcement bonded by the rubber with textile reinforcement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/06—Driving-belts made of rubber
- F16G1/08—Driving-belts made of rubber with reinforcement bonded by the rubber
- F16G1/12—Driving-belts made of rubber with reinforcement bonded by the rubber with metal reinforcement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/14—Driving-belts made of plastics
- F16G1/16—Driving-belts made of plastics with reinforcement bonded by the plastic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29K2705/08—Transition metals
- B29K2705/12—Iron
Definitions
- the present invention relates to a toothed belt according to the preamble of claim 1, a method for producing such a toothed belt according to claim 6, a method for producing such a toothed belt according to claim 10 and a method for producing such a toothed belt according to claim 11.
- a belt can be designed as a flexible, endlessly closed belt.
- straps can also have two open ends
- Such belts are nowadays usually made essentially of a flexible material such as an elastomeric material such as rubber or, for example, a plastic such as polyurethane (PU for short) as a flexible belt body, in which in the direction of power transmission, ie in the direction of movement, tension members such as steel cables or textile tension members are embedded.
- the belt has at least one profiled side which, when used, is in contact with at least one drive roller and possibly also with at least one deflection roller. This allows the belt to be driven and guided at the same time.
- the profiling of the drive side of the belt can, depending on the application, transversely to the direction of movement, for example as Teeth or in the direction of movement, for example as wedges or as wedge ribs
- profiled rollers are usually used as mold cores or as mold wheels in order to map the toothing of the belt on its tooth side.
- the tension members are placed on the outer diameter of the rollers so that the tension members can come into direct contact with the roller.
- the tension members are partially pressed out of the PU material on the drive side as they circulate around the roller, so that the tension members of the finished belt on the drive side are at least punctually free of the PU material.
- Tension members are exposed to environmental influences at these exposed points on the drive side.
- Corrosion in the exposed areas can be especially true for applications outside of buildings such as be the case with wind turbines. If the wind turbines are used at sea (so-called off-shore wind turbines) or at least on land (so-called on-shore wind turbines) near the coast, the corrosion can be intensified by the increased salinity of the ambient air.
- the fabric layer can now come into contact with the exposed or exposed areas of the tension members on the drive side. This cannot prevent the corrosion of the steel cables as tension members, since the moisture can be transported through the capillaries of the fabric layer to the steel cables. Rather, the corrosion can even be promoted and accelerated by the fact that the fabric layer can serve as a moisture store and thus extend the duration of exposure to moisture. This also applies to humidity with increased salt content.
- An object of the present invention is to provide a toothed belt of the type described at the outset, so that exposed tension members can be avoided. This should preferably be done as simply and / or inexpensively as possible. At least one alternative to known such toothed belts is to be created.
- the present invention relates to a toothed belt with a
- Belt body which extends essentially in a longitudinal direction and has a flexible material, wherein in the flexible material of the belt body in the longitudinal direction at least one tension member, preferably a plurality of tension members, at least substantially embedded and at least in the
- the belt body having one tooth side with it in the longitudinal direction
- the longitudinal direction corresponds to the direction of movement of the toothed belt during operation.
- the tension member which can also be referred to as a tension cord, is
- an element which extends elongate in the longitudinal direction preferably in the form of a strand of glass fibers or aramid fibers or in the form of a steel cable, as will be described in more detail below.
- Minimum thickness of the flexible material of the belt body in the vertical direction on the tension member corresponds to at least one tooth gap, preferably all tooth gaps, at least a minimum thickness (h) of the flexible material of the belt body in the vertical direction on the tension member, the minimum thickness (h) being dependent the thickness (d) of the tension member in the vertical direction and the material hardness (ShA) of the flexible material of the belt body in Shore A are calculated as follows:
- At its thinnest point in the vertical direction with respect to the tension member at least one tooth gap has a minimum thickness which is equal to or greater than a predetermined minimum thickness.
- the predetermined minimum thickness of the flexible material of the belt body is based on the one hand on the performance class of the toothed belt, which usually determines the thickness of the tension member in the vertical direction.
- the performance class of the toothed belt usually determines the thickness of the tension member in the vertical direction. The higher the performance class of the toothed belt, the thicker the tension member in the vertical direction and the larger the predetermined
- the predetermined minimum thickness of the flexible material of the belt body depends on the hardness of the flexible material of the belt body in Shore A. The harder the flexible material of the belt body, measured in Shore A, the less the deformation of the flexible material of the belt body and the thinner the predetermined minimum thickness of the flexible material of the belt body can be.
- the minimum thickness of the flexible material of the belt body in the vertical direction on the tension member corresponds to at least one tooth gap, preferably all tooth gaps, and also approximately the minimum thickness of the flexible material of the belt body in the vertical direction on the tension member.
- the tooth gap fulfills that
- the criterion of a minimum thickness of the flexible material of the belt body without, however, going significantly beyond this. This can e.g. can be achieved by using the minimum thickness of the flexible material of the
- Compensated for manufacturing tolerances and the inventive criterion of a minimum thickness of the flexible material of the belt body can be reliably observed. In this way, too great a thickness of the flexible material of the belt body in the tooth gap can be avoided, which could lead to an increased weight increase of the toothed belt and to increased material costs of manufacture without offering any additional benefit.
- the flexible material of the belt body comprises polyurethane, preferably the flexible material is
- the tension member is a steel cable, the thickness of the tension member being the diameter of the steel cable.
- a steel cable as a tension member can generate comparatively high forces in the longitudinal direction
- the present invention can also be used particularly effectively in the case of steel cables as tension members, in order to protect the steel cables from corrosion.
- the present invention also relates to a method for producing a toothed belt as described above with at least the following steps:
- a known toothed belt can be produced in a conventional manner as described at the beginning, which is the case with the introduction
- At least one such exposed point of the tension member can then by a person or by a technical
- Inspection device can be recognized. This can preferably be done optically, since the material of the tension member e.g. due to its color, due to its surface structure etc. from the surrounding flexible material of the
- Belt body can sufficiently differentiate.
- the identified exposed point of the tension member can then be closed by the person or by an application device in that a flexible material is applied to the tooth side at least where the exposed point of the tension member was identified. This is done to such an extent that the minimum thickness of the flexible material of the
- Belt body is reached in the vertical direction on the tension member at its exposed location, as previously described.
- the application takes place as application of a layer of lacquer, as gluing on a foil or as welding on of a foil.
- the A lacquer layer can be applied, in particular by a person by hand, by means of a brush or the like as lacquer liquid, which is then cured, for example by drying.
- a film is understood to mean a flat, thin structure which can be applied to the tooth side in a materially bonded manner, for example by gluing or welding. By using a film, a comparatively large area can be covered so that, if necessary, several exposed areas of the tension member that are sufficiently close to one another can be covered in one work step.
- the film when a film is used, has a fabric on the side facing away from the belt body.
- a film is first produced separately which has a fabric on one side, which e.g. can serve to reduce the coefficient of friction.
- the film is then applied with the fabric-free side to the tooth side of the belt body as described above, so that the fabric faces outwards, i.e. away from the belt body.
- a fabric as described above can be provided in the toothed belt according to the invention.
- a flexible material is applied with the material of the belt body.
- the material to be applied e.g. as paint or film, the same material used as the flexible belt body.
- Different material properties can hereby be avoided.
- a connection between the materials can also be favored, whereby the
- Life of the toothed belt according to the invention can be increased. Furthermore, the production costs can be reduced in this way, since fewer different materials have to be procured, stored and processed.
- the present invention also relates to a method of making a
- Toothed belt as described above with at least the following steps: • Manufacture of a flat belt with at least one tension member as
- a toothed belt according to the invention can initially be produced in the conventional manner as a flat belt, so that the flat belt corresponds to the belt body of the toothed belt according to the invention. This can be done by means of a first stage, a two-stage extrusion process.
- the belt body can be designed as a flat belt including a tension member, so that the inventive minimum thickness of the flexible material of the belt body is present in the vertical direction on the tension member.
- the flat belt can harden so that the tension member can no longer be pushed out of the flexible material of the belt body.
- the present invention also relates to a method of making a
- a toothed belt according to the invention can also be produced by producing a flat belt.
- the toothing is then applied to the tooth side of the flat belt as a belt body, whereby not only the teeth themselves are formed, but material is also applied in the tooth gaps so that at least the minimum thickness of the flexible material of the belt body in the vertical direction on the tension member is achieved there can be.
- the method has at least the further step:
- the friction or the coefficient of friction of the tooth side can be influenced and in particular reduced.
- the flexible material of the belt body can also be protected in this way in order to prevent or at least reduce abrasion.
- the predetermined minimum thickness of the flexible material of the belt body in the vertical direction can be ensured in the course of operation or its longevity increased.
- FIG. 1 shows a schematic longitudinal section of a known toothed belt
- FIG. 2 shows a schematic longitudinal section of a known toothed belt with fabric on the tooth side
- Toothed belt according to a first embodiment and 4 shows a schematic longitudinal section of an inventive
- Toothed belt according to a second embodiment.
- Transverse direction (not shown) and a vertical direction Z aligned perpendicular to both the longitudinal direction X and the transverse direction
- Longitudinal direction X can also be referred to as depth X, the transverse direction also as width and the vertical direction Z also as height Z.
- Fig. 1 shows a schematic longitudinal section of a known toothed belt 1.
- the toothed belt 1 has a belt body 10, which is located in the
- tension members 13 Extends substantially in the longitudinal direction X and consists of polyurethane (PU) as a flexible material.
- PU polyurethane
- several tension members 13 are arranged in the longitudinal direction X, running parallel to one another in the transverse direction.
- the tension members 13 are each essentially embedded in the flexible material of the belt body 10 and are essentially to completely enclosed by the flexible material of the belt body 10.
- Steel cables 13 are used as tension members 13.
- the toothed belt 1 has a drive side 11 and an outer side 12 facing away from this in the vertical direction Z.
- alternating teeth 14 and tooth gaps 15 are formed in the longitudinal direction X, which is why the drive side 11 can also be referred to as the tooth side 11.
- FIG. 2 shows a schematic longitudinal section of a known toothed belt 1 with fabric 16 on the tooth side 11.
- the tooth side 11 of the toothed belt 1 is completely covered by a fabric 16, the inside of which is in contact with the flexible material of the belt body 10.
- the fabric 16 also comes directly with the o.g. exposed points 17 of the tooth side 11 in contact, so that in this case too the tension members 13 at these exposed points 17 of the tooth side 11 are exposed to environmental influences such as e.g.
- the fabric 16 can even further promote and accelerate the corrosion, in that the fabric 16 can serve as a moisture store and thus can extend the duration of exposure to moisture.
- Fig. 3 shows a schematic longitudinal section of an inventive
- Toothed belt 1 according to a first embodiment.
- a minimum thickness a of the flexible material of the tooth in the tooth gaps 15 of the tooth side 11, which have the smallest material thickness of the flexible material of the belt body 10 in the vertical direction Z on the tension member 13, a minimum thickness a of the flexible material of the tooth gaps 15 of the tooth side 11, which have the smallest material thickness of the flexible material of the belt body 10 in the vertical direction Z on the tension member 13, a minimum thickness a of the flexible material of the
- Belt body 10 is provided which corresponds to at least a minimum thickness h of the flexible material of the belt body 10 in the vertical direction Z on the tension member 13.
- the minimum thickness h is calculated as a function of the thickness d of the tension member 13 in the vertical direction Z and the material hardness ShA of the flexible material of the belt body 10 in Shore A as follows:
- the tension members 13 in the area of the tooth gaps 15 are covered by at least a minimum thickness a of the flexible material of the belt body 10 in the vertical direction Z, which is equal to or greater than the minimum thickness h. This applies at least in the manufacturing state of the
- Toothed belt according to the invention 1 It may be sufficient to adhere to the predetermined minimum thickness h of the flexible material of the belt body 10 and not significantly exceed it in order to reduce the weight of the
- Toothed belt 1 not to increase unnecessarily and to use as little flexible material as possible.
- the predetermined minimum thickness h of the flexible material of the belt body 10 is based on the one hand on the performance class of the toothed belt 1, which usually determines the thickness d of the tension member 13 in the vertical direction Z.
- the predetermined minimum thickness is based h of the flexible material of the belt body 10 according to the ShA hardness of the flexible material of the belt body 10 in Shore A. The harder the flexible material of the belt body 10, the less the deformation of the flexible material of the belt body 10 and the thinner the predetermined minimum thickness h of the flexible material of the belt body 10.
- the predetermined minimum thickness h of the flexible material of the belt body 10 can, for example, by covering recognized exposed points 17 by hand with, for example a lacquer or surface by gluing or welding foils in the appropriate size as foil pieces.
- the toothed side 11 of the toothed belt 1 can also be configured as a belt body 10 on an already manufactured flat belt.
- the predetermined minimum thickness h of the flexible material of the belt body 10 can already be achieved by the formation of the flat belt or when the teeth are applied by the
- Tooth gaps are provided with the flexible material accordingly.
- the tension members 13 can be better protected from external environmental influences than previously known. This can help avoid the occurrence of corrosion, particularly in the case of steel cables 13 as tension members 13. In this way, the longevity of the toothed belt 1 can be increased.
- Fig. 4 shows a schematic longitudinal section of an inventive
- Toothed belt 1 according to a second embodiment.
- the tooth side 11 is covered by a fabric 16 in order to reduce the coefficient of friction of the tooth side 11, for example. Because of the predetermined minimum thickness h of the flexible material of the belt body 10, the fabric 16 does not come into direct contact with the tension members 13.
- ShA material hardness of the flexible material of the (PU) belt body 10 in Shore A is a material hardness of the flexible material of the (PU) belt body 10 in Shore A.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019207434.0A DE102019207434A1 (de) | 2019-05-21 | 2019-05-21 | Zahnriemen |
| PCT/EP2020/057479 WO2020233863A1 (de) | 2019-05-21 | 2020-03-18 | Zahnriemen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3973208A1 true EP3973208A1 (de) | 2022-03-30 |
Family
ID=69941367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20713249.9A Pending EP3973208A1 (de) | 2019-05-21 | 2020-03-18 | Zahnriemen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11994189B2 (de) |
| EP (1) | EP3973208A1 (de) |
| CN (1) | CN114127438B (de) |
| DE (1) | DE102019207434A1 (de) |
| WO (1) | WO2020233863A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022210728A1 (ja) * | 2021-03-30 | 2022-10-06 | 三ツ星ベルト株式会社 | 歯付ベルト及び歯付ベルト伝動装置 |
| CN116997733A (zh) * | 2021-03-30 | 2023-11-03 | 三之星机带株式会社 | 齿形带及齿形带传动装置 |
| DE102024204806A1 (de) | 2024-05-24 | 2025-11-27 | Contitech Deutschland Gmbh | Riemen mit besonderer Eignung im Tieftemperaturbereich und Verfahren zu dessen Herstellung |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0714680Y2 (ja) * | 1989-01-25 | 1995-04-10 | 三ツ星ベルト株式会社 | 動力伝動用vベルト |
| BE1004469A3 (nl) * | 1991-02-06 | 1992-11-24 | Bekaert Sa Nv | Versterkte transmissieriem. |
| DE102004044218A1 (de) | 2004-09-14 | 2006-03-16 | Contitech Antriebssysteme Gmbh | Spulverfahren bei der Herstellung von mit Stahlcord-Zugträgern zu versehenen Riemen |
| US7254934B2 (en) * | 2005-03-24 | 2007-08-14 | The Gates Corporation | Endless belt with improved load carrying cord |
| JP4497545B2 (ja) * | 2005-11-17 | 2010-07-07 | バンドー化学株式会社 | 歯付ベルト |
| RU2426923C2 (ru) | 2006-01-19 | 2011-08-20 | Дайко Юроп С.Р.Л. | Зубчатый ремень и система синхронного управления |
| CN101122097B (zh) * | 2006-08-11 | 2011-11-16 | 因温特奥股份公司 | 电梯设备的皮带和具有这种皮带的电梯设备 |
| US7824284B2 (en) * | 2007-11-29 | 2010-11-02 | The Gates Corporation | Power transmission belt and cord adhesive system and adhesion method |
| JP5415983B2 (ja) | 2010-02-09 | 2014-02-12 | バンドー化学株式会社 | 歯付ベルト |
| JP6055430B2 (ja) * | 2013-03-29 | 2016-12-27 | 三ツ星ベルト株式会社 | 伝動用ベルト |
| JP6275585B2 (ja) * | 2013-08-30 | 2018-02-07 | 三ツ星ベルト株式会社 | 歯付ベルト |
| JP6096239B2 (ja) * | 2014-04-30 | 2017-03-15 | 三ツ星ベルト株式会社 | 歯付ベルト |
| JP6807163B2 (ja) | 2015-04-28 | 2021-01-06 | 三ツ星ベルト株式会社 | ベルト及びその製造方法 |
| JP6527549B2 (ja) | 2016-06-06 | 2019-06-05 | 三ツ星ベルト株式会社 | 歯付きベルト及びその製造方法 |
-
2019
- 2019-05-21 DE DE102019207434.0A patent/DE102019207434A1/de active Pending
-
2020
- 2020-03-18 WO PCT/EP2020/057479 patent/WO2020233863A1/de not_active Ceased
- 2020-03-18 EP EP20713249.9A patent/EP3973208A1/de active Pending
- 2020-03-18 US US17/595,622 patent/US11994189B2/en active Active
- 2020-03-18 CN CN202080050861.4A patent/CN114127438B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020233863A1 (de) | 2020-11-26 |
| CN114127438A (zh) | 2022-03-01 |
| US11994189B2 (en) | 2024-05-28 |
| US20220221027A1 (en) | 2022-07-14 |
| CN114127438B (zh) | 2024-01-02 |
| DE102019207434A1 (de) | 2020-11-26 |
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