WO2013041095A1 - Vorrichtung zum spannen einer endlosen bahn - Google Patents
Vorrichtung zum spannen einer endlosen bahn Download PDFInfo
- Publication number
- WO2013041095A1 WO2013041095A1 PCT/DE2012/100299 DE2012100299W WO2013041095A1 WO 2013041095 A1 WO2013041095 A1 WO 2013041095A1 DE 2012100299 W DE2012100299 W DE 2012100299W WO 2013041095 A1 WO2013041095 A1 WO 2013041095A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- motor
- transmission
- transverse shaft
- web
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/005—Wire-tensioning devices
Definitions
- the invention relates to a device for tensioning an endless web, in particular for clamping machine wires or dry felts of a paper, board or tissue machine.
- Such devices for tensioning an endless web also be referred to as a device for tensioning an endless web (also
- Called sieve tensioner have at least one tension roller for guiding the web. By moving the tension roller, the web can be stretched or relaxed.
- the invention has for its object to provide a device for tensioning an endless web, which is used variably and structurally simple and allows an exact adjustment of the web tension.
- Patent claim 1 solved.
- Advantageous embodiments are described in the subclaims.
- the device for tensioning an endless web in particular for clamping machine wires or dry felts of a paper, board or tissue machine, at least one tensioning roller to
- the tension roller is mounted to adjust the tension of the web in at least two, each on a rack guided car.
- the cars are connected to each other via a drivable transverse shaft for synchronous displacement of the car.
- a motor is provided to drive the cross shaft.
- a Gear in particular a gear transmission, provided between the transverse shaft and the rack.
- Synchronization of the displacement of the carriage through the transverse shaft lead to a reproducible and uniform displacement of the tensioning roller and thus to a controlled and uniform stress build-up or degradation within the web.
- the gearbox allows a change (adaptation) of the
- the device thus allows an exact adjustment of the web tension, the components used to lead to a variably usable and structurally simple design device.
- the transmission is provided in each of the car between the cross shaft and the respective rack. That each of the carriages is equipped with a gear which is provided between the cross shaft and the respective rack.
- the transmission is as
- the transmission has the advantage that the torque to be absorbed by the transverse shaft is relatively low. Accordingly thin the cross shaft can be designed, which reduces the design effort and leads to a material and cost savings.
- the transmission has a
- a second intermediate which has a smaller number of teeth than the first intermediate, is arranged.
- the second idler gear is engaged with a third idler gear which has a larger number of teeth than the second idler gear and which is disposed on an output shaft parallel to the intermediate shaft.
- the output gear is arranged on the output shaft.
- the transverse shaft is guided in a fixedly connected to the carriage hollow profile element.
- the transverse wave is shielded from the environment and the rotational movement of the transverse shaft is protected.
- the transverse shaft can be mounted within the hollow profile element at least one bearing point. This increases the stability of the crossbar and can reduce the occurrence of
- the engine is positioned on one of the carriages.
- the engine in particular a motor output shaft, be arranged coaxially with the transverse shaft. In this way, a direct driving of the transverse shaft by the motor without the interposition of other elements is possible.
- the engine is advantageously designed as an electric motor. However, it is also possible to use a hydraulically or pneumatically operated engine. Furthermore, the motor may be designed as a self-locking motor.
- the motor is rotatably mounted and connected to a device for detecting the reaction torque. In this way it is possible to determine the tension of the endless web by means of the reaction torque and to control the motor accordingly.
- a force measuring sensor in particular a power meter and / or one or more
- Strain gauges provided for detecting the forces acting on the tension roller forces and the force measuring sensor is connected to a control /
- Control device connected to adjust the tension of the web.
- the racks are stored protected between guide profiles and / or the racks are covered with a steel band over its entire length against contamination.
- FIG. 1 shows a first embodiment of a device for tensioning an endless web
- Fig. 2 shows a first alternative for a device for
- FIG. 3 shows an alternative mounting of the engine without a device for
- Fig. 4 is a partially sectioned plan view of a second
- FIG. 5 is an enlarged view of the area X of Fig. 4;
- Fig. 6 is a side view of a device for tensioning an endless
- Fig. 1 shows a section of, for example, a per se known dryer section of a paper machine.
- an endless web e.g. a machine screen, dryer fabric or dry felt a paper machine, passed over a known tension roller 2.
- the tension roller 2 is rotatably supported at its two axial ends in a carriage 3 and 4, respectively.
- the carriages 3, 4 are each guided on a rack 5 and 6, respectively. By moving the carriage 3, 4 along the racks 5, 6, the tension roller 2 can be moved in the direction of R1.
- the displacement of the tension roller 2 in the direction of R1 in turn causes the construction or degradation of a voltage in the web. 1
- a motor 7, wherein this is designed as an electric, self-locking motor.
- the motor 7 is fastened to the carriage 3 and has a motor output shaft 8.
- Directional arrow R2 is shown, drives a coaxial with this arranged transverse shaft 9 at.
- the transverse shaft 9 is used to synchronize the
- the transverse shaft 9 is rotatably supported both in the carriage 3 and in the carriage 4 by rolling bearings.
- a gear 10 is provided between the transverse shaft 9 and the rack 5 and 6, respectively.
- the transmission 10 is in the
- Embodiments designed as a reduction gear transmission In Fig. 1, only one of the transmissions 10 is schematically represented by three illustrated gears shown in dashed lines.
- the transmission 10 translates the input speed output by the engine 7 through one or more reduction stages into an output speed reduced relative to the input speed. In this way, the existing in conventional engines relatively high speeds with a corresponding increase in the torque to the process of the carriage 3, 4 along the
- the transverse shaft 9 is surrounded by a hollow profile element 1 1.
- Hollow profile element 1 1 has a square outer profile and is hollow, so that the transverse shaft 9 can rotate relative to the hollow profile element 1 1 in the direction of rotation R3.
- the hollow profile element 1 1 is connected at its axial ends in each case with one of the carriages 3, 4. In this way, the hollow profile element 1 1 is spatially stationary, while the positioned within the hollow profile element transverse shaft 9 can rotate.
- Rod guide and / or a rolling bearing in the hollow profile element 1 1 is mounted.
- the motor 7 is rotatably mounted in the carriage 3 by a rolling bearing and connected via a lever 12 with a compression spring 13. Upon activation of the motor 7 takes place a rotation of the transverse shaft 9, a translation of the rotational movement through the gear 10, a displacement of the carriage 3, 4 along the racks 5, 6, a method of the tension roller 2 in the direction of R1 and a corresponding stress buildup or Dismantling within the track 1. In response to this occurs at the same time a reaction force in the reverse direction of the tension roller 2 to the motor. 7
- Lever 12 undergoes a rash in the direction of R4, creating a Clamping path change to the compression spring 13 occurs.
- This clamping path change is detected by a known Wegmesssystenn (not provided in the figures with a reference numeral) and is also a measure of the existing in the web 1 voltage as a measure of the reaction torque determined. After determining the reaction torque on the
- the reaction torque can be controlled within predetermined limits, whereby the voltage in the web 1 can be adjusted and / or stabilized.
- the system consisting of the motor 7, the lever 12, the compression spring 13 and the displacement measuring system thus forms a device for reaction torque detection.
- the tensioning roller 2 is equipped at its bearing points in the carriage 3, 4 with a known force measuring sensor 14 (load cell, strain gauges, or the like). Based on the measured data of this force measuring sensor 14, a control device (not shown in the figures) can set a desired tension within the web 1 by correspondingly driving the motor 7 and then displacing the carriages 3, 4 along the racks 5, 6.
- the transmission 10 is mounted within the carriage 3, 4 by rolling bearings and provided with a lubricant supply means (not shown in the figures).
- Fig. 2 shows an alternative embodiment of a device for
- the engine 7 is also with a
- the lever 12 equipped.
- the lever 12 is in communication with a force measuring sensor 15.
- the lever 12 attached to the motor 7 undergoes a deflection in
- Force measuring sensor 15 detected.
- the signals of the force measuring sensor 15 can then serve to determine the reaction torque.
- the System consisting of the motor 7, the lever 12 and the
- Force measuring sensor 15 thus forms a further device for
- FIG. 3 shows an alternative form of mounting the motor 7 without a reaction torque detecting device.
- the engine 7 is also equipped with a lever 12.
- the lever 12 is connected to a fixed bearing 16 in connection.
- the movement of the lever 12 in the direction R4 is suppressed by the fixed bearing 16.
- Fig. 4 shows a partially sectioned plan view of a second
- the embodiment of FIG. 4 differs from the embodiment of FIG. 1 essentially by the configuration of the hollow profile element 1 1 or 1 1 1. While the hollow profile element 1 1 of FIG. 1 has a square outer profile, the hollow profile element 1 1 1 of FIG. 4 has a round outer diameter. Further, in the embodiment of Fig. 4, the reaction torque detection apparatus shown in Fig. 1 is absent. The remaining components of the device correspond to those of FIG. 1. The components “transmission” and “motor” shown only schematically in FIG. 1 are shown in more detail in FIG. 4 and will be described below with reference to FIG. 5.
- FIG. 5 shows an enlarged illustration of the region X from FIG. 4.
- the engine 7 has an engine output shaft 8. This engine output shaft 8 is directly connected to the transverse shaft 9, so that the motor 7 the
- Transverse shaft 9 drives immediately.
- the transmission 10, which is provided between the transverse shaft 9 and the rack 5, is designed as a reduction gear transmission.
- the transmission 10 has a drive pinion 17, a first intermediate gear 18, a second intermediate gear 19, a third
- the drive pinion 17 is seated on the transverse shaft 9.
- the first intermediate gear 18 is in engagement with the drive pinion 17 and has a larger number of teeth than that
- Intermediate shaft 22 is arranged.
- the intermediate shaft 22 is parallel to
- Cross shaft 9 formed and stored in the carriage 3 by rolling bearings.
- the second intermediate 19 also sits on the intermediate shaft 22 and has a smaller number of teeth than the first intermediate 18.
- Intermediate gear 19 is engaged with the third intermediate gear 20.
- the third intermediate gear 20 has a larger number of teeth than the second
- Output gear 21 has a smaller number of teeth than the third intermediate 20. Further, the output gear 21 is in engagement with the rack 5 and transmits the rotational movement of the transmission 10 in a linear displacement of the carriage 3 along the rack. 5
- FIG. 6 shows a side view of an apparatus for tensioning an endless web 1.
- the components of the device from FIG. 6 correspond to those of the exemplary embodiments from FIG. 1 or FIG. 4, so that a detailed description is dispensed with.
- the tension roller 2 is mounted in the carriage 3.
- the carriage 3 is displaceable along the rack 5.
- the tension roller is moved in the direction of R1. In this way, a stress build-up or - degradation in the web 1 is possible, ie the web 1 is stretched as needed.
- the motor 7 (not shown in Fig. 6), the speed and torque is adjusted by means of the transmission 10.
- the motor 7 drives the drive pinion 17.
- the Drive pinion 17 is engaged with the first intermediate gear 18.
- the second intermediate gear 19 is seated together with the first intermediate gear 18 on the intermediate shaft 22 and is in engagement with the third intermediate gear 20.
- the third intermediate gear 20 is like the driven gear 21 on the output shaft 23.
- the driven gear 21 is in engagement with the rack. 5
Landscapes
- Transmission Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112012003950.5T DE112012003950A5 (de) | 2011-09-23 | 2012-09-24 | Vorrichtung zum Spannen einer endlosen Bahn |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11182578A EP2573262A1 (de) | 2011-09-23 | 2011-09-23 | Vorrichtung zum Spannen einer endlosen Bahn |
EP11182578.2 | 2011-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013041095A1 true WO2013041095A1 (de) | 2013-03-28 |
Family
ID=47177692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2012/100299 WO2013041095A1 (de) | 2011-09-23 | 2012-09-24 | Vorrichtung zum spannen einer endlosen bahn |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2573262A1 (de) |
DE (1) | DE112012003950A5 (de) |
WO (1) | WO2013041095A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103276620B (zh) * | 2013-05-30 | 2015-08-05 | 金东纸业(江苏)股份有限公司 | 片材张紧装置及方法 |
WO2015018595A1 (de) * | 2013-08-07 | 2015-02-12 | Voith Patent Gmbh | Anordnung zum spannen eines formiersiebes einer papiermaschine |
AT514702B1 (de) * | 2014-02-17 | 2015-03-15 | Jud Ag Papiermaschinen | Anlage zur Förderung von Materialien, Produkten u.dgl. mit mindestens einem in sich geschlossenen Förderband |
DE102015008219A1 (de) * | 2015-06-29 | 2016-12-29 | Texmag Gmbh Vertriebsgesellschaft | Vorrichtung zum Spannen eines umlaufenden Endlosbandes |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3026429A1 (de) * | 1979-07-13 | 1981-01-29 | Morrison Machine Co | Einrichtung zur behandlung eines endlosen bandes und/oder von darauf getragenem material |
EP0611267A1 (de) * | 1993-01-29 | 1994-08-17 | Valmet Paper Machinery Inc. | Vorrichtung zum Spannen eines Gewebes in einer Papiermaschine |
DE102006006378A1 (de) * | 2006-02-11 | 2007-08-16 | Voith Patent Gmbh | Umspannvorrichtung |
US20110023317A1 (en) * | 2009-07-31 | 2011-02-03 | Brackett Timothy J | Dryer felt tension indicator apparatus |
-
2011
- 2011-09-23 EP EP11182578A patent/EP2573262A1/de not_active Withdrawn
-
2012
- 2012-09-24 WO PCT/DE2012/100299 patent/WO2013041095A1/de active Application Filing
- 2012-09-24 DE DE112012003950.5T patent/DE112012003950A5/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3026429A1 (de) * | 1979-07-13 | 1981-01-29 | Morrison Machine Co | Einrichtung zur behandlung eines endlosen bandes und/oder von darauf getragenem material |
EP0611267A1 (de) * | 1993-01-29 | 1994-08-17 | Valmet Paper Machinery Inc. | Vorrichtung zum Spannen eines Gewebes in einer Papiermaschine |
DE102006006378A1 (de) * | 2006-02-11 | 2007-08-16 | Voith Patent Gmbh | Umspannvorrichtung |
US20110023317A1 (en) * | 2009-07-31 | 2011-02-03 | Brackett Timothy J | Dryer felt tension indicator apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP2573262A1 (de) | 2013-03-27 |
DE112012003950A5 (de) | 2014-10-09 |
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