EP2573262A1 - Dispositif de serrage d'une bande sans fin - Google Patents

Dispositif de serrage d'une bande sans fin Download PDF

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Publication number
EP2573262A1
EP2573262A1 EP11182578A EP11182578A EP2573262A1 EP 2573262 A1 EP2573262 A1 EP 2573262A1 EP 11182578 A EP11182578 A EP 11182578A EP 11182578 A EP11182578 A EP 11182578A EP 2573262 A1 EP2573262 A1 EP 2573262A1
Authority
EP
European Patent Office
Prior art keywords
motor
transverse shaft
shaft
carriages
gear
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.)
Withdrawn
Application number
EP11182578A
Other languages
German (de)
English (en)
Inventor
Richard Meyer-Theilinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP11182578A priority Critical patent/EP2573262A1/fr
Priority to PCT/DE2012/100299 priority patent/WO2013041095A1/fr
Priority to DE112012003950.5T priority patent/DE112012003950A5/de
Publication of EP2573262A1 publication Critical patent/EP2573262A1/fr
Withdrawn legal-status Critical Current

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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 called a wire tensioner
  • 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.
  • the device for tensioning an endless web in particular for tensioning machine wires or dry felts of a paper, board or tissue machine, has at least one tensioning roller for guiding the web.
  • 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.
  • the guidance of the two carriages in the respective rack and the synchronization of the displacement of the carriages by 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 track.
  • a motor as a drive source for the rotational movement of the transverse shaft, a particularly precisely defined movement (speed, angle of rotation) can be realized.
  • the transmission allows a change (adjustment) of the engine speed and the engine torque to the required displacement speed of the car or to the required displacement torque. Overall, 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 designed as a reduction gear.
  • the transmission makes it possible to convert the relatively high engine speeds of conventional engines into a relatively slow displacement motion - as normally required in the adjustment of web tension.
  • the output torque of the motor is increased accordingly, so that a relatively small motor can be used to generate the torque required for the displacement of the car.
  • the cross shaft Since the reduction gear is arranged here between the cross shaft and the rack, the cross shaft still rotates with the engine speed and the speed reduction takes place only then in the transmission. This 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 drive pinion, which sits on the cross shaft, and a driven gear, which is in engagement with the rack on.
  • the transmission directly connects the cross shaft with the rack. This makes a compact and space-saving configuration possible.
  • the drive pinion is in engagement with a first intermediate gear, which has a larger number of teeth than the drive pinion and which is disposed on an intermediate shaft lying parallel to the cross shaft, wherein on the intermediate shaft, a second intermediate gear, which has a smaller number of teeth than that first intermediate has, 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 transmission is mounted on roller bearings in the car.
  • a particularly durable and low-friction mounting of the transmission is possible.
  • the transmission may be equipped with a lubricant supply means (e.g., grease nipple).
  • 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 crosswave and can prevent the occurrence of natural resonances of the crosswave or shift to not occurring in operation frequency ranges.
  • 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 load cell and / or one or more strain gauges, is provided for detecting the forces acting on the tension roller, and the force measuring sensor is connected to a control device for adjusting 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 section of, for example, a known per se dryer section of a paper machine.
  • an endless web for example a machine wire, a drying wire or a dry felt of a paper machine, is guided over a tensioning roll 2 known per se.
  • 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, To move the carriage 3, 4 along the racks 5, 6 is a motor 7, wherein this is designed as an electric, self-locking motor.
  • the motor 7 is fixed to the carriage 3 and has an engine output shaft 8.
  • the motor output shaft 8, whose direction of rotation is represented by the directional arrow R2, drives a cross shaft 9 arranged coaxially therewith.
  • the cross shaft 9 is used to synchronize the sliding movement of the carriage 3, 4 along the rack 5 and 6 and transmits the drive power of the motor 7 to the two cars 3, 4.
  • the transverse shaft 9 in both the car 3 and in the car 4 through Rolling bearings rotatably mounted.
  • a gear 10 is provided between the transverse shaft 9 and the rack 5 and 6, respectively.
  • the transmission 10 is formed in the embodiments as a reduction gear transmission.
  • Fig. 1 is only one of the transmission 10 in a schematic manner 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 motors relatively large speeds are broken down with a corresponding increase in the torque to the process of the car 3, 4 along the rack 5 and 6 sufficient relatively low travel speed.
  • the transverse shaft 9 is surrounded by a hollow profile element 11.
  • the hollow profile element 11 has a square outer profile and is hollow, so that the transverse shaft 9 can rotate relative to the hollow profile element 11 in the direction of rotation R3.
  • the hollow profile element 11 is connected at its axial ends in each case with one of the carriages 3, 4. In this way, the hollow profile element 11 is spatially stationary, while the positioned within the hollow profile element transverse shaft 9 can rotate.
  • 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 Degradation within the web 1. In response to this occurs at the same time a reaction force, which acts back in the reverse direction of the tension roller 2 to the motor 7. Due to the rotatable mounting of the motor 7, this experiences a reaction torque in the direction R2.
  • the attached to the motor 7 lever 12 undergoes a rash in the direction R4, creating a Clamping path change to the compression spring 13 occurs.
  • This tension change is detected by a known per se displacement measuring system (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.
  • 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 measurement 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.
  • a force measuring sensor 14 load cell, strain gauges, or the like.
  • 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 for a device for reaction torque detection.
  • the engine 7 is also equipped with a lever 12.
  • the lever 12 is in communication with a force measuring sensor 15.
  • a reaction torque in the direction R2 the lever 12 mounted on the motor 7 undergoes a deflection in the direction R4. This rash is detected by the known force measuring sensor 15.
  • 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 another device for reaction torque detection.
  • Fig. 3 shows an alternative form of storage of the motor 7 without a device for reaction torque detection.
  • 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 embodiment of an apparatus for tensioning an endless web 1.
  • the embodiment of Fig. 4 differs from the embodiment Fig. 1 essentially by the configuration of the hollow profile element 11 or 111. While the hollow profile element 11 from Fig. 1 has a square outer profile, has the hollow profile element 111 from Fig. 4 a round outer diameter. Further missing in the embodiment according to Fig. 4 in the Fig. 1 illustrated device for reaction torque detection. The remaining components of the device correspond to those of Fig. 1 , In the Fig. 1 only schematically illustrated components "gear" and "engine” are in Fig. 4 Shown in more detail below and in relation to Fig. 5 described.
  • Fig. 5 shows an enlarged view of the area 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 drives the transverse shaft 9 directly.
  • 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 idler 18, a second idler 19, a third idler 20, and a driven gear 21.
  • the first pinion 18 is in engagement with the drive pinion 17 and has a larger number of teeth than the drive pinion 17.
  • the first intermediate 18 is disposed on an intermediate shaft 22.
  • the intermediate shaft 22 is formed parallel to the transverse shaft 9 and mounted in the carriage 3 by rolling bearings.
  • the second intermediate gear 19 is also seated on the intermediate shaft 22 and has a smaller number of teeth than the first intermediate 18.
  • the second idler 19 is in engagement with the third intermediate 20.
  • the third idler 20 has a larger number of teeth than the second idler 19 and sits on an output shaft 23.
  • the output shaft 23 is supported by bearings in the carriage 3 and parallel to the intermediate shaft 22 - and thus also parallel to the transverse shaft 9 - arranged.
  • the 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 Fig. 6 correspond to those of the embodiments Fig. 1 respectively. Fig. 4 so that a detailed description is omitted.
  • 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.
  • the motor 7 (in Fig. 6 not shown), 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

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EP11182578A 2011-09-23 2011-09-23 Dispositif de serrage d'une bande sans fin Withdrawn EP2573262A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11182578A EP2573262A1 (fr) 2011-09-23 2011-09-23 Dispositif de serrage d'une bande sans fin
PCT/DE2012/100299 WO2013041095A1 (fr) 2011-09-23 2012-09-24 Dispositif pour tendre une bande sans fin
DE112012003950.5T DE112012003950A5 (de) 2011-09-23 2012-09-24 Vorrichtung zum Spannen einer endlosen Bahn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11182578A EP2573262A1 (fr) 2011-09-23 2011-09-23 Dispositif de serrage d'une bande sans fin

Publications (1)

Publication Number Publication Date
EP2573262A1 true EP2573262A1 (fr) 2013-03-27

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ID=47177692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11182578A Withdrawn EP2573262A1 (fr) 2011-09-23 2011-09-23 Dispositif de serrage d'une bande sans fin

Country Status (3)

Country Link
EP (1) EP2573262A1 (fr)
DE (1) DE112012003950A5 (fr)
WO (1) WO2013041095A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103276620A (zh) * 2013-05-30 2013-09-04 金东纸业（江苏）股份有限公司 片材张紧装置及方法
WO2015018595A1 (fr) * 2013-08-07 2015-02-12 Voith Patent Gmbh Dispositif tendeur destiné à tendre une toile de formage d'une machine à papier
EP2907917A1 (fr) * 2014-02-17 2015-08-19 JUD Aktiengesellschaft Papiermaschinen Installation de transport de matériaux, produits ou similaires à l'aide d'au moins une bande de transport fermée
DE102015008219A1 (de) * 2015-06-29 2016-12-29 Texmag Gmbh Vertriebsgesellschaft Vorrichtung zum Spannen eines umlaufenden Endlosbandes

Citations (4)

* Cited by examiner, † Cited by third party
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 (fr) * 1993-01-29 1994-08-17 Valmet Paper Machinery Inc. Appareil pour mettre sous tension une toile dans une machine à papier
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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 (fr) * 1993-01-29 1994-08-17 Valmet Paper Machinery Inc. Appareil pour mettre sous tension une toile dans une machine à papier
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103276620A (zh) * 2013-05-30 2013-09-04 金东纸业（江苏）股份有限公司 片材张紧装置及方法
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 (fr) * 2013-08-07 2015-02-12 Voith Patent Gmbh Dispositif tendeur destiné à tendre une toile de formage d'une machine à papier
CN105452562A (zh) * 2013-08-07 2016-03-30 福伊特专利有限公司 用于张紧造纸机的成型网的设备
EP2907917A1 (fr) * 2014-02-17 2015-08-19 JUD Aktiengesellschaft Papiermaschinen Installation de transport de matériaux, produits ou similaires à l'aide d'au moins une bande de transport fermée
CN104843452A (zh) * 2014-02-17 2015-08-19 奥胜制造(太仓)有限公司 用于传送物料和产品的具有至少一个连续传送带的装置
DE102015008219A1 (de) * 2015-06-29 2016-12-29 Texmag Gmbh Vertriebsgesellschaft Vorrichtung zum Spannen eines umlaufenden Endlosbandes

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DE112012003950A5 (de) 2014-10-09
WO2013041095A1 (fr) 2013-03-28

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