US20230399798A1 - Drive Arrangement and Drive Arrangement for a Twin-Wire Press - Google Patents
Drive Arrangement and Drive Arrangement for a Twin-Wire Press Download PDFInfo
- Publication number
- US20230399798A1 US20230399798A1 US18/245,449 US202118245449A US2023399798A1 US 20230399798 A1 US20230399798 A1 US 20230399798A1 US 202118245449 A US202118245449 A US 202118245449A US 2023399798 A1 US2023399798 A1 US 2023399798A1
- Authority
- US
- United States
- Prior art keywords
- roll
- motor
- bearing
- coupling
- coupling element
- 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
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 230000008878 coupling Effects 0.000 claims description 107
- 238000010168 coupling process Methods 0.000 claims description 107
- 238000005859 coupling reaction Methods 0.000 claims description 107
- 210000003739 neck Anatomy 0.000 description 16
- 239000000835 fiber Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/0006—Driving arrangements
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof
- D21F3/045—Arrangements thereof including at least one extended press nip
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof
-
- 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
- D21F7/02—Mechanical driving arrangements
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0226—Bearings
Definitions
- the invention relates to a drive arrangement comprising a roll rotatable around an axis, a roll bearing, a bearing housing, and a motor, wherein the roll is mounted via the roller bearing, the bearing housing of the roll bearing is connected to a frame or a foundation and a drive torque of the motor can be transmitted to the roll.
- the invention further relates to a twin wire press comprising a first roll for driving a first clothing and a second roll for driving a second clothing, wherein at least one roll comprises a drive arrangement according to the invention.
- the invention also relates to the use of a drive arrangement according to the invention for driving a roll in a twin wire press.
- a drive arrangement is disclosed in DE202013009581 U1.
- a rotation means such as a motor, is attached to the axle of a roll, whereby the rotation means has a rotation shaft designed as a hollow shaft and a torque can be transmitted to the axle of the roll via the rotation shaft.
- DE1020060853 A1 discloses a roll drive unit with a gear comprising a housing, a central gearwheel, and an output shaft.
- the roll drive unit further comprises a drive motor, which is in drive connection with the central gear via a pinion.
- DE1427925 A1 discloses a compact electric gear roll with low flywheel mass and rigid bearing, wherein a planetary gear is arranged inside the bearing housing.
- the planet carrier is kept so rigid that impacts from the roll do not exert any displacement and thus no edge engagement on the toothing, so that jamming is not to be feared.
- the motor is connected to the planetary gear via a torsion bar, whereby the torsion bar acts as the inner sun wheel of the planetary gear and at the same time as a torsionally flexible coupling, which can compensate for misalignments of the electric motor.
- an elastic intermediate piece is installed between the base frame and the bearing housing to soften load shocks from the roll.
- CH671892 A5 discloses a single drive of rolls comprising a direct drive consisting of a motor and reduction gear, wherein the direct drive is flanged to the bearing housing and the torque exerted by it is supported on this housing.
- a slip-on gear usually designed as a toothed shaft—engages in recesses in the shaft of the reduction gear and the shaft journal.
- DE1285972 B discloses an individual drive for straightening rolls of a sheet metal straightening machine with planetary gears, wherein the rolls are mounted in tiltable bearing housings via roll bearings and each straightening roll has an individual drive consisting of an electric motor flanged directly to the bearing housing and of a planetary gear which is accommodated in a bore of the bearing housing.
- DE2629039 A1 discloses a roller conveyor driven by a geared motor, the journals of which are rotatably mounted in bearing housings, the geared motor being directly flanged to the bearing housing.
- Twin wire presses for dewatering a fibre suspension allow the formation of a continuous fibre web.
- a twin wire press and in particular the frame for a twin wire press is described in AT 502 584 A2.
- twin wire presses a fibre suspension is concentrated from an inlet concentration of e.g. 3 wt. %-8 wt. % to an outlet concentration of e.g. >30 wt. %.
- twin wire presses comprise a first clothing run with a first clothing and a second clothing run with a second clothing, the clothing being permeable—e.g. as a wire.
- the fibre suspension is introduced between the circulating fabrics and dewatered.
- Each clothing run comprises at least one driven roll to which the drive torque of a motor can be transmitted via a gear unit.
- a typical drive arrangement is characterized in that the driven rolls are arranged one above the other and the gear units are each mounted on the respective roll necks, the gear units also being arranged one above the other.
- the respective motor is connected to the frame and the gear units arranged one above the other are connected via connecting torque brackets, which prevent the gear housings from twisting.
- the drive comprising motor, gear unit, coupling, etc.—is built from independent standard components and must ultimately fit a very specific arrangement.
- the aim of the invention is an effective drive arrangement, a minimization of mechanical loads introduced into the roll via the drive arrangement, e.g. bending loads, with good accessibility to the individual components of the drive arrangement as well as the rolls.
- the motor is indirectly connected to the bearing housing of the roll bearing and a reaction torque of the motor can be transmitted to the bearing housing of the roll bearing.
- the rotatable roll is supported by a roll bearing and the bearing housing of the roll bearing is connected to a machine frame or foundation.
- the rotatable roll includes a roll neck on the drive side, the roll neck being supported in the roll bearing.
- the motor transmits a drive torque to the roll, e.g. to the roll neck, with further components, e.g. a gear unit, a coupling, etc., being arranged between the roll and the motor to transmit the drive torque.
- the drive torque generated by the motor causes a reaction torque.
- the drive arrangement provides for the introduction of the reaction torque of the motor into the bearing housing of the roll bearing.
- the motor reaction torque can be transmitted by indirectly connecting the motor housing to the bearing housing.
- An indirect connection of the motor housing can be made, for example, via the components located between the bearing housing and the motor.
- a gear unit may be disposed between the bearing housing and the motor, with the motor housing connected to the gear unit housing, for example, and further connected to the bearing housing.
- the indirect connection of the motor housing to the bearing housing further allows the dead weight of the drive arrangement to be transferred to the bearing housing. There is no load on the roll or the bearing neck.
- the motor is connected to the bearing housing, wherein the motor is connected to the bearing housing at least via a gear. In this way, the reaction torque of the motor can be transmitted to the bearing housing.
- a connecting element is arranged between the bearing housing and the gear unit, wherein the motor is connected to the bearing housing via the gear unit and the connecting element.
- This connecting element is designed, for example, as a gearbox lantern.
- the connecting element allows the motor and the gear unit to be connected on one side and the bearing housing on the other, whereby the reaction torque of the motor can be transmitted to the bearing housing of the roll bearing via the connecting element.
- the coupling can be arranged inside the connecting element, whereby the drive torque of the motor can be transmitted from the gear unit to the roll via the coupling.
- An equally favourable design of the drive arrangement is characterised in that the drive torque of the motor is effective about the axis of the rotatable roll.
- the drive shaft of the motor and the axis of the rotatable roll are aligned, so that the drive torque of the motor acts around the axis of the rotatable roll.
- the various components of the drive arrangement such as the coupling, the connecting element, the gear unit, and motor, are arranged along the axis of the rotatable roll or the components surround the axis of the rotatable roll.
- each individual driven roll has its own drive arrangement, whereby the efficient arrangement of the components along the axis of the rotatable roll according to the invention allows the available space to be used optimally.
- An advantageous design of the drive arrangement is characterised in that the drive torque of the motor can be transmitted to the roll via the gear unit and a coupling arranged between the gear unit and the roll bearing.
- the roll is mounted via the roll bearing and the bearing housing is connected to a frame or foundation, whereby the reaction torque of the motor can be introduced into the bearing housing.
- the roll bearing can, for example, be accomplished by arranging the roll neck in the roll bearing.
- the drive torque of the motor is transmitted to the roll and the reaction torque to the bearing housing of the roll.
- This allows an advantageous modular design of the drive arrangement and improved accessibility.
- Particularly advantageous is the arrangement of the coupling within a connecting element that connects the bearing housing with the gear unit or the motor, whereby the coupling is multi-sectional.
- the coupling element together with the gear unit and motor can be removed from the bearing housing, leaving at least one part of the coupling on the roll and a second part of the coupling is removable together with the gear unit and motor.
- an alignment of the gear unit deviating from the axis of the rotatable roll can be compensated by the coupling.
- the gear unit transmits the drive torque of the motor to the axis of the rotatable roll.
- the coupling allows compensation in the event of deviating alignment of the roll and gear unit or motor.
- the coupling comprises a first coupling element and a second coupling element, wherein the first coupling element is connected to the roll, the second coupling element is connected to the gear unit, wherein a third coupling element connects the first coupling element and the second coupling element, and by means of the third coupling element an orientation of the gear unit deviating from the axis of the rotatable roll can be compensated.
- the first coupling element is firmly connected to the roll and the second coupling element is firmly connected to the gear unit. Compensation for a deviating alignment of roll and gear unit is made between the first coupling element and third coupling element and/or by compensation between the second coupling element and third coupling element. This is easily realised by interlocking between the first coupling element and third coupling element, or the second coupling element and third coupling element.
- the first coupling element or the second coupling element comprises, for example, a coupling hub.
- the coupling comprises a shrink disc, wherein the drive torque of the motor can be transmitted to the roll via the shrink disc and the shrink disc is connected to the roll.
- the shrink disc is shrunk onto the roll neck of the roll, whereby the shrink disc is firmly connected—e.g. screwed—to the first coupling element, for example with the first coupling hub.
- the invention also aims to provide a space-saving and easily accessible drive arrangement in a twin wire press.
- the twin wire press comprising a drive arrangement according to the invention.
- a twin wire press comprises a first roll for driving a first clothing and a second roll for driving a second clothing.
- the roll arrangement according to the invention allows better accessibility.
- FIG. 1 shows a drive arrangement according to the state of the art.
- FIG. 2 shows the roll bearing of a drive arrangement according to the invention.
- FIG. 3 shows the roll bearing and a coupling element of a drive arrangement according to the invention.
- FIG. 4 shows the roll bearing and coupling elements of a drive arrangement according to the invention.
- FIG. 5 shows the motor, gear unit and a coupling element of a drive arrangement according to the invention.
- FIG. 6 shows a connecting element of a drive arrangement according to the invention connected to the bearing housing.
- FIG. 7 shows a drive arrangement according to the invention on rolls arranged one above the other.
- FIG. 1 shows a drive arrangement according to the state of the art.
- Two rolls 1 ′, 10 ′ are arranged one above the other.
- the rolls 1 ′, 10 ′ are each mounted via a roll bearing 3 ′, whereby the bearing housings 4 ′ of the roll bearings 3 ′ are connected to a frame 16 ′.
- the rolls 1 ′, 10 ′ are mounted in the roll bearings 3 ′ by means of roll necks 2 ′ and gear units 8 ′ are mounted on the roll necks 2 ′ in each case.
- the gear units 8 ′ are also arranged one above the other, whereby a reaction torque is absorbed by a connection of the gear units 8 ′ by a torque bracket.
- the gear units 8 ′ are each driven by a motor 6 ′ attached to the frame 16 ′, the motor 6 ′ transmitting the drive torque to the gear unit 8 ′ via a cardan shaft.
- FIG. 2 shows the roll bearing of a drive arrangement according to the invention.
- the roll 1 , 10 which is rotatable about the axis 7 , is mounted via the roll bearing 3 , wherein the roll 1 , 10 comprises a roll neck 2 and the roll neck 2 is mounted in the roll bearing 3 .
- the roll bearing 3 comprises a bearing housing 4 , whereby the roll bearing 3 or the roll bearing 3 is connected to a frame or a foundation via the bearing housing 4 .
- FIG. 3 shows the roll bearing and a coupling element of a drive arrangement according to the invention.
- the roll 1 , 10 is supported by the bearing 3 , whereby the bearing housing 4 of the roll bearing 3 is connected to a frame or a foundation.
- a drive torque of a motor can be transmitted to the roll 1 , 10 via a coupling 11 , wherein the coupling 11 comprises a first coupling element 13 and the first coupling element 13 is connected to the roll 1 , 10 .
- the first coupling element 13 is designed as a coupling hub, for example.
- the coupling may further comprise a shrink disc 12 for transmitting the drive torque of the motor, wherein the shrink disc is connected to the roll, e.g.
- the first coupling element 13 is connected to the shaft 1 , 10 via the shrink disc 12 .
- the first coupling element 13 is detachably connected to the shrink disc 12 —for example, the coupling element 13 can be screwed to the shrink disc.
- FIG. 4 shows the roll bearing and coupling elements of a drive arrangement according to the invention.
- a third coupling element 15 is shown in FIG. 4 .
- the first coupling element 13 is connected to the roll 1 , 10 via the shrink disc 12 , whereby the third coupling element 15 allows the transmission of the drive torque of the motor 6 to the first coupling element 13 and a compensation of an orientation of the gear unit 8 deviating from the axis 7 of the rotatable roll 1 , 10 .
- the connection between the first coupling element 13 and the third coupling element 15 is realised, for example, by a toothing. This design makes it easy to remove the third coupling part 15 from the first coupling part 13 connected to the shaft 1 , 10 .
- FIG. 5 shows the motor, gear unit and a coupling element of a drive arrangement according to the invention.
- the reaction torque of the motor 6 can be transmitted to the gear unit 8 , whereby the housing of the motor 6 is connected to the housing of the gear unit 8 and thus the reaction torque can be transmitted.
- the drive torque of the motor 6 is transmitted to the gear unit 8 and further to the second coupling element 14 .
- the second coupling element 14 is firmly—e.g. screwed—connected to the gear unit 8 and is designed, for example, as a coupling hub.
- the drive torque of the motor 6 acts around the axis 7 of the rotatable roll 1 , 10 , or the components of the drive arrangement are arranged along the axis 7 .
- FIG. 6 shows a connecting element of a drive arrangement according to the invention connected to the bearing housing.
- the connecting element 9 is connected on one side to the bearing housing 4 and on the other side to the gear unit 8 and the motor 6 and the reaction torque of the motor 6 can be transmitted to the bearing housing 4 via the gear unit 8 and the connecting element 9 .
- the connecting element 9 is designed as a gearbox lantern, whereby the connecting element 9 is arranged around the axis 7 .
- the drive torque is transmitted from the motor 6 to the roll 1 , 10 , the drive torque being transmitted from the motor 6 to the roll 1 , 10 via the gear unit 8 and the coupling 11 , the coupling being arranged inside the connecting element 9 and the drive torque of the motor 6 acting around the axis 7 of the rotatable roll 1 , 10 .
- FIG. 7 shows a drive arrangement according to the invention on rolls arranged one above the other.
- a first roll 1 and a second roll 10 are shown, each with a drive arrangement according to the invention.
- Roll 1 and roll 10 are arranged one above the other, which is typically the case in twin wire presses, with roll 1 being part of a first clothing run and roll 10 being part of a second clothing run.
- the roll 1 , 10 is supported by the roll bearing 3 , whereby the roll bearing 3 comprises a bearing housing 4 and the bearing housing is connected to a frame or a foundation.
- the components of the drive arrangement are arranged along the axis 7 , with the drive torque of the motor 6 acting around the axis 7 of the rotatable roll 1 , 10 .
- the drive torque of the motor 6 is transmitted to the roll 1 , 10 via the gear unit 8 and the coupling 11 .
- the reaction torque of the motor 6 is transmitted to the bearing housing via the gear unit 8 and the connecting element 9 .
- the housing of the motor 6 is connected to the housing of the gear unit 8 with the connecting element 9 and further to the bearing housing 4 .
- these connections are shown as bolted connections.
- the coupling 11 is arranged inside the connecting element 9 .
- the second coupling element 14 which is firmly connected to the gear unit 8 —can be removed together with the coupling element 9 .
- at least one coupling element e.g. the first coupling element 13 which is firmly connected to the shaft 1 , 10 —remains on the shaft 1 , 10 .
- the present invention offers numerous advantages, in particular an effective drive arrangement.
- the drive arrangement according to the invention allows for a minimal load on the shaft, since the weight of the other components of the drive arrangement, but also the reaction torque induced by the motor, is not transferred to the shaft.
Abstract
A drive arrangement comprising a roll with a roll bearing, a bearing housing and a motor, wherein the bearing housing of the roll bearing is connected to a frame or a foundation and a drive torque of the motor can be transmitted to the roll. The motor is connected to the bearing housing and a reaction torque of the motor can be transmitted into the bearing housing. This allows avoidance of mechanical stresses introduced into the roll with good accessibility of the rolls.
Description
- The invention relates to a drive arrangement comprising a roll rotatable around an axis, a roll bearing, a bearing housing, and a motor, wherein the roll is mounted via the roller bearing, the bearing housing of the roll bearing is connected to a frame or a foundation and a drive torque of the motor can be transmitted to the roll.
- The invention further relates to a twin wire press comprising a first roll for driving a first clothing and a second roll for driving a second clothing, wherein at least one roll comprises a drive arrangement according to the invention. The invention also relates to the use of a drive arrangement according to the invention for driving a roll in a twin wire press.
- A drive arrangement is disclosed in DE202013009581 U1. For example, a rotation means, such as a motor, is attached to the axle of a roll, whereby the rotation means has a rotation shaft designed as a hollow shaft and a torque can be transmitted to the axle of the roll via the rotation shaft.
- DE1020060853 A1 discloses a roll drive unit with a gear comprising a housing, a central gearwheel, and an output shaft. The roll drive unit further comprises a drive motor, which is in drive connection with the central gear via a pinion.
- DE1427925 A1 discloses a compact electric gear roll with low flywheel mass and rigid bearing, wherein a planetary gear is arranged inside the bearing housing. In particular, the planet carrier is kept so rigid that impacts from the roll do not exert any displacement and thus no edge engagement on the toothing, so that jamming is not to be feared. The motor is connected to the planetary gear via a torsion bar, whereby the torsion bar acts as the inner sun wheel of the planetary gear and at the same time as a torsionally flexible coupling, which can compensate for misalignments of the electric motor. Furthermore, an elastic intermediate piece is installed between the base frame and the bearing housing to soften load shocks from the roll.
- CH671892 A5 discloses a single drive of rolls comprising a direct drive consisting of a motor and reduction gear, wherein the direct drive is flanged to the bearing housing and the torque exerted by it is supported on this housing. To transmit the torque, a slip-on gear—usually designed as a toothed shaft—engages in recesses in the shaft of the reduction gear and the shaft journal. By using the shaft-mounted gearbox, the influence of the roll on bending due to the inclined position of the direct drive is eliminated.
- DE1285972 B discloses an individual drive for straightening rolls of a sheet metal straightening machine with planetary gears, wherein the rolls are mounted in tiltable bearing housings via roll bearings and each straightening roll has an individual drive consisting of an electric motor flanged directly to the bearing housing and of a planetary gear which is accommodated in a bore of the bearing housing.
- DE2629039 A1 discloses a roller conveyor driven by a geared motor, the journals of which are rotatably mounted in bearing housings, the geared motor being directly flanged to the bearing housing.
- Twin wire presses for dewatering a fibre suspension allow the formation of a continuous fibre web. For example, a twin wire press and in particular the frame for a twin wire press is described in AT 502 584 A2.
- In twin wire presses, a fibre suspension is concentrated from an inlet concentration of e.g. 3 wt. %-8 wt. % to an outlet concentration of e.g. >30 wt. %. Typically, twin wire presses comprise a first clothing run with a first clothing and a second clothing run with a second clothing, the clothing being permeable—e.g. as a wire. The fibre suspension is introduced between the circulating fabrics and dewatered. Each clothing run comprises at least one driven roll to which the drive torque of a motor can be transmitted via a gear unit.
- A typical drive arrangement is characterized in that the driven rolls are arranged one above the other and the gear units are each mounted on the respective roll necks, the gear units also being arranged one above the other. In this arrangement, for example, the respective motor is connected to the frame and the gear units arranged one above the other are connected via connecting torque brackets, which prevent the gear housings from twisting. This arrangement is obvious because the drive—comprising motor, gear unit, coupling, etc.—is built from independent standard components and must ultimately fit a very specific arrangement.
- Conventional drive arrangements have several disadvantages. Thus, when the gear unit is mounted on the roll neck, the weight of the gear unit rests on the roll neck and causes a bending load. When torque brackets are used to prevent the gear unit housing from twisting, the roll necks are also loaded by the torques of the torque brackets. In general, accessibility to the individual components of the drive arrangement is more difficult. In addition, removal of the drive roll requires prior disassembly and dismantling of the drive.
- The aim of the invention is an effective drive arrangement, a minimization of mechanical loads introduced into the roll via the drive arrangement, e.g. bending loads, with good accessibility to the individual components of the drive arrangement as well as the rolls.
- According to the invention, this is achieved in that the motor is indirectly connected to the bearing housing of the roll bearing and a reaction torque of the motor can be transmitted to the bearing housing of the roll bearing. The rotatable roll is supported by a roll bearing and the bearing housing of the roll bearing is connected to a machine frame or foundation. For example, the rotatable roll includes a roll neck on the drive side, the roll neck being supported in the roll bearing. The motor transmits a drive torque to the roll, e.g. to the roll neck, with further components, e.g. a gear unit, a coupling, etc., being arranged between the roll and the motor to transmit the drive torque. According to the action-reaction principle, the drive torque generated by the motor causes a reaction torque. According to the invention, the drive arrangement provides for the introduction of the reaction torque of the motor into the bearing housing of the roll bearing. The motor reaction torque can be transmitted by indirectly connecting the motor housing to the bearing housing. An indirect connection of the motor housing can be made, for example, via the components located between the bearing housing and the motor. For example, a gear unit may be disposed between the bearing housing and the motor, with the motor housing connected to the gear unit housing, for example, and further connected to the bearing housing. The indirect connection of the motor housing to the bearing housing further allows the dead weight of the drive arrangement to be transferred to the bearing housing. There is no load on the roll or the bearing neck.
- According to the invention, the motor is connected to the bearing housing, wherein the motor is connected to the bearing housing at least via a gear. In this way, the reaction torque of the motor can be transmitted to the bearing housing.
- In a further advantageous embodiment, a connecting element is arranged between the bearing housing and the gear unit, wherein the motor is connected to the bearing housing via the gear unit and the connecting element. This connecting element is designed, for example, as a gearbox lantern. The connecting element allows the motor and the gear unit to be connected on one side and the bearing housing on the other, whereby the reaction torque of the motor can be transmitted to the bearing housing of the roll bearing via the connecting element. Advantageously, the coupling can be arranged inside the connecting element, whereby the drive torque of the motor can be transmitted from the gear unit to the roll via the coupling.
- An equally favourable design of the drive arrangement is characterised in that the drive torque of the motor is effective about the axis of the rotatable roll. Advantageously, the drive shaft of the motor and the axis of the rotatable roll are aligned, so that the drive torque of the motor acts around the axis of the rotatable roll. This results in a drive arrangement around or along the axis of the rotatable roll. The various components of the drive arrangement, such as the coupling, the connecting element, the gear unit, and motor, are arranged along the axis of the rotatable roll or the components surround the axis of the rotatable roll. When driven rolls are arranged vertically one above the other, each individual driven roll has its own drive arrangement, whereby the efficient arrangement of the components along the axis of the rotatable roll according to the invention allows the available space to be used optimally.
- An advantageous design of the drive arrangement is characterised in that the drive torque of the motor can be transmitted to the roll via the gear unit and a coupling arranged between the gear unit and the roll bearing. According to the invention, the roll is mounted via the roll bearing and the bearing housing is connected to a frame or foundation, whereby the reaction torque of the motor can be introduced into the bearing housing. The roll bearing can, for example, be accomplished by arranging the roll neck in the roll bearing. The drive torque of the motor is transmitted to the roll and the reaction torque to the bearing housing of the roll. This allows an advantageous modular design of the drive arrangement and improved accessibility. Particularly advantageous is the arrangement of the coupling within a connecting element that connects the bearing housing with the gear unit or the motor, whereby the coupling is multi-sectional. Thus, by detaching the coupling element from the bearing housing, the coupling element together with the gear unit and motor can be removed from the bearing housing, leaving at least one part of the coupling on the roll and a second part of the coupling is removable together with the gear unit and motor.
- According to the invention, an alignment of the gear unit deviating from the axis of the rotatable roll can be compensated by the coupling. Thus, the gear unit transmits the drive torque of the motor to the axis of the rotatable roll. In this case, the coupling allows compensation in the event of deviating alignment of the roll and gear unit or motor.
- According to the invention, the coupling comprises a first coupling element and a second coupling element, wherein the first coupling element is connected to the roll, the second coupling element is connected to the gear unit, wherein a third coupling element connects the first coupling element and the second coupling element, and by means of the third coupling element an orientation of the gear unit deviating from the axis of the rotatable roll can be compensated. The first coupling element is firmly connected to the roll and the second coupling element is firmly connected to the gear unit. Compensation for a deviating alignment of roll and gear unit is made between the first coupling element and third coupling element and/or by compensation between the second coupling element and third coupling element. This is easily realised by interlocking between the first coupling element and third coupling element, or the second coupling element and third coupling element. The first coupling element or the second coupling element comprises, for example, a coupling hub.
- In a further advantageous embodiment, the coupling comprises a shrink disc, wherein the drive torque of the motor can be transmitted to the roll via the shrink disc and the shrink disc is connected to the roll. For example, the shrink disc is shrunk onto the roll neck of the roll, whereby the shrink disc is firmly connected—e.g. screwed—to the first coupling element, for example with the first coupling hub.
- The invention also aims to provide a space-saving and easily accessible drive arrangement in a twin wire press. According to the invention, this is achieved by the twin wire press comprising a drive arrangement according to the invention. Typically, a twin wire press comprises a first roll for driving a first clothing and a second roll for driving a second clothing. Especially with driven rolls arranged one above the other, the roll arrangement according to the invention allows better accessibility.
- The invention will now be described using the examples in the drawings.
-
FIG. 1 shows a drive arrangement according to the state of the art. -
FIG. 2 shows the roll bearing of a drive arrangement according to the invention. -
FIG. 3 shows the roll bearing and a coupling element of a drive arrangement according to the invention. -
FIG. 4 shows the roll bearing and coupling elements of a drive arrangement according to the invention. -
FIG. 5 shows the motor, gear unit and a coupling element of a drive arrangement according to the invention. -
FIG. 6 shows a connecting element of a drive arrangement according to the invention connected to the bearing housing. -
FIG. 7 shows a drive arrangement according to the invention on rolls arranged one above the other. -
FIG. 1 shows a drive arrangement according to the state of the art. Tworolls 1′, 10′ are arranged one above the other. Therolls 1′, 10′ are each mounted via a roll bearing 3′, whereby thebearing housings 4′ of theroll bearings 3′ are connected to aframe 16′. On the drive side, therolls 1′, 10′ are mounted in theroll bearings 3′ by means ofroll necks 2′ andgear units 8′ are mounted on theroll necks 2′ in each case. Corresponding to the arrangement of therolls 1′, 10′ one above the other, thegear units 8′ are also arranged one above the other, whereby a reaction torque is absorbed by a connection of thegear units 8′ by a torque bracket. Thegear units 8′ are each driven by amotor 6′ attached to theframe 16′, themotor 6′ transmitting the drive torque to thegear unit 8′ via a cardan shaft. -
FIG. 2 shows the roll bearing of a drive arrangement according to the invention. In this case, theroll axis 7, is mounted via theroll bearing 3, wherein theroll roll neck 2 and theroll neck 2 is mounted in theroll bearing 3. Theroll bearing 3 comprises a bearinghousing 4, whereby the roll bearing 3 or the roll bearing 3 is connected to a frame or a foundation via the bearinghousing 4. -
FIG. 3 shows the roll bearing and a coupling element of a drive arrangement according to the invention. Theroll bearing 3, whereby the bearinghousing 4 of the roll bearing 3 is connected to a frame or a foundation. A drive torque of a motor can be transmitted to theroll coupling 11, wherein thecoupling 11 comprises afirst coupling element 13 and thefirst coupling element 13 is connected to theroll first coupling element 13 is designed as a coupling hub, for example. The coupling may further comprise ashrink disc 12 for transmitting the drive torque of the motor, wherein the shrink disc is connected to the roll, e.g. shrunk onto theroll neck 2, and thefirst coupling element 13 is connected to theshaft shrink disc 12. For example, thefirst coupling element 13 is detachably connected to theshrink disc 12—for example, thecoupling element 13 can be screwed to the shrink disc. -
FIG. 4 shows the roll bearing and coupling elements of a drive arrangement according to the invention. In addition toFIG. 3 , athird coupling element 15 is shown inFIG. 4 . In this case, thefirst coupling element 13 is connected to theroll shrink disc 12, whereby thethird coupling element 15 allows the transmission of the drive torque of themotor 6 to thefirst coupling element 13 and a compensation of an orientation of thegear unit 8 deviating from theaxis 7 of therotatable roll first coupling element 13 and thethird coupling element 15 is realised, for example, by a toothing. This design makes it easy to remove thethird coupling part 15 from thefirst coupling part 13 connected to theshaft -
FIG. 5 shows the motor, gear unit and a coupling element of a drive arrangement according to the invention. In this case, the reaction torque of themotor 6 can be transmitted to thegear unit 8, whereby the housing of themotor 6 is connected to the housing of thegear unit 8 and thus the reaction torque can be transmitted. Further, the drive torque of themotor 6 is transmitted to thegear unit 8 and further to thesecond coupling element 14. Thesecond coupling element 14 is firmly—e.g. screwed—connected to thegear unit 8 and is designed, for example, as a coupling hub. Here, the drive torque of themotor 6 acts around theaxis 7 of therotatable roll axis 7. -
FIG. 6 shows a connecting element of a drive arrangement according to the invention connected to the bearing housing. In this case, the connectingelement 9 is connected on one side to the bearinghousing 4 and on the other side to thegear unit 8 and themotor 6 and the reaction torque of themotor 6 can be transmitted to the bearinghousing 4 via thegear unit 8 and the connectingelement 9. The connectingelement 9 is designed as a gearbox lantern, whereby the connectingelement 9 is arranged around theaxis 7. Advantageously, the drive torque is transmitted from themotor 6 to theroll motor 6 to theroll gear unit 8 and thecoupling 11, the coupling being arranged inside the connectingelement 9 and the drive torque of themotor 6 acting around theaxis 7 of therotatable roll -
FIG. 7 shows a drive arrangement according to the invention on rolls arranged one above the other. Afirst roll 1 and asecond roll 10 are shown, each with a drive arrangement according to the invention.Roll 1 and roll 10 are arranged one above the other, which is typically the case in twin wire presses, withroll 1 being part of a first clothing run and roll 10 being part of a second clothing run. Thus, theroll roll bearing 3, whereby the roll bearing 3 comprises a bearinghousing 4 and the bearing housing is connected to a frame or a foundation. The components of the drive arrangement are arranged along theaxis 7, with the drive torque of themotor 6 acting around theaxis 7 of therotatable roll motor 6 is transmitted to theroll gear unit 8 and thecoupling 11. At the same time, the reaction torque of themotor 6 is transmitted to the bearing housing via thegear unit 8 and the connectingelement 9. For this purpose, the housing of themotor 6 is connected to the housing of thegear unit 8 with the connectingelement 9 and further to the bearinghousing 4. InFIG. 7 these connections are shown as bolted connections. Advantageously, thecoupling 11 is arranged inside the connectingelement 9. Thus, it is easily possible to remove thecoupling element 9 together with thegear unit 8 andmotor 6 from the bearing housing, whereby thecoupling 11 is multi-sectional and at least one coupling part—e.g. thesecond coupling element 14, which is firmly connected to thegear unit 8—can be removed together with thecoupling element 9. Thus, at least one coupling element—e.g. thefirst coupling element 13 which is firmly connected to theshaft shaft - The present invention offers numerous advantages, in particular an effective drive arrangement. This means good accessibility to the components of the drive arrangement and in particular to the roll, whereby the modular design allows easy separation of the roll and the rest of the drive arrangement. This makes the roll accessible without having to remove all the other components, such as the coupling, gear unit and motor, individually beforehand or having to remove the other components from the frame or the foundation. At the same time, the drive arrangement according to the invention allows for a minimal load on the shaft, since the weight of the other components of the drive arrangement, but also the reaction torque induced by the motor, is not transferred to the shaft.
-
-
- (1) Roll
- (2) Roll neck
- (3) Roll bearing
- (4) Bearing housing
- (5) Torque bracket
- (6) Motor
- (7) Rotation axis
- (8) Gear unit
- (9) Connecting element
- (10) Roll
- (11) Coupling
- (12) Shrink disc
- (13) First coupling element
- (14) Second coupling element
- (15) Third coupling element
- (16) Frame
Claims (13)
1-10. (canceled)
11. A drive arrangement comprising:
a roll (1,10) rotatable about an axis (7);
a roll bearing (3) with a bearing housing (4) connected to a frame (16) or a foundation, the roll bearing (3) mounting the roll (1, 10) whereby a drive torque of the motor (6) can be transmitted to the roll (1,10); and
a motor (6) indirectly connected to the bearing housing (4) of the roll bearing (3) at least via a gear unit (8), whereby a reaction torque of the motor (6) can be transmitted into the bearing housing (4) of the roll bearing (3), wherein
the drive torque of the motor (6) can be transmitted to the roll (1,10) via the gear unit (8) and a coupling (11) arranged between the gear unit (8) and the roll bearing (3), the coupling (11) comprising a first coupling element (13) and a second coupling element (14) with the first coupling element (13) being connected to the roll (1,10) and the second coupling element (14) being connected to the gear unit (8), and
a third coupling element (15) connects the first coupling element (13) and the second coupling element (14), wherein an alignment of the gear unit (8) deviating from the axis (7) of the rotatable roll (1,10) can be compensated by the third coupling element (15).
12. The drive arrangement according to claim 11 , wherein
a connecting element (9) is arranged between the bearing housing (4) and the gear unit (8), and
the motor (6) is connected to the bearing housing (4) via the gear unit (8) and the connecting element (9).
13. The drive arrangement according to claim 12 , wherein the drive torque of the motor (6) is transmitted from the motor (6) to the roll (1,10) via a coupling (11) arranged inside the connecting element (9).
14. The drive arrangement of claim 13 , wherein the coupling (11) comprises a shrink disc (12) that is connected to the roll (1, 10) and the drive torque of the motor (6) is transmitted to the roll (1,10) via the shrink disc (12).
15. The drive arrangement of claim 11 , wherein the coupling (11) comprises a shrink disc (12) that is connected to the roll (1, 10) and the drive torque of the motor (6) is transmitted to the roll (1,10) via the shrink disc (12).
16. The drive arrangement of claim 12 , wherein the coupling (11) comprises a shrink disc (12) that is connected to the roll (1, 10) and the drive torque of the motor (6) is transmitted to the roll (1,10) via the shrink disc (12).
17. The drive arrangement according to claim 15 , wherein the drive torque of the motor (6) acts around the axis (7) of the rotatable roll (1,10).
18. The drive arrangement according to claim 11 , wherein the drive torque of the motor (6) acts around the axis (7) of the rotatable roll (1,10).
19. The drive arrangement according to claim 12 , wherein the drive torque of the motor (6) acts around the axis (7) of the rotatable roll (1,10).
20. The drive arrangement according to claim 13 , wherein the drive torque of the motor (6) acts around the axis (7) of the rotatable roll (1,10).
21. A twin wire press, comprising a first roll (1) rotatable about a first axis (7) for driving a first clothing and a second roll (10) rotatable about a second axis (7) for driving a second clothing, comprising:
a roll bearing (3) with a bearing housing (4) connected to a frame (16) or a foundation, the roll bearing (3) mounting the first roll (1) whereby a drive torque of the motor (6) can be transmitted to the first roll (1); and
a motor (6) indirectly connected to the bearing housing (4) of the roll bearing (3) at least via a gear unit (8), whereby a reaction torque of the motor (6) can be transmitted into the bearing housing (4) of the roll bearing (3), wherein
the drive torque of the motor (6) can be transmitted to the first roll (1) via the gear unit (8) and a coupling (11) arranged between the gear unit (8) and the roll bearing (3), the coupling (11) comprising a first coupling element (13) and a second coupling element (14) with the first coupling element (13) being connected to the first roll (1) and the second coupling element (14) being connected to the gear unit (8), and
a third coupling element (15) connects the first coupling element (13) and the second coupling element (14), wherein an alignment of the gear unit (8) deviating from the axis (7) of the rotatable first roll (1) can be compensated by the third coupling element (15).
22. A use of the drive arrangement according to claim 11 in a twin wire press to drive a clothing with the roll (1, 10).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50823/2020A AT523269B1 (en) | 2020-09-28 | 2020-09-28 | DRIVE ARRANGEMENT AND DRIVE ARRANGEMENT FOR A DOUBLE SCREEN PRESS |
ATA50823/2020 | 2020-09-28 | ||
PCT/EP2021/068249 WO2022063453A1 (en) | 2020-09-28 | 2021-07-01 | Drive arrangement, and drive arrangement for a twin-wire press |
Publications (1)
Publication Number | Publication Date |
---|---|
US20230399798A1 true US20230399798A1 (en) | 2023-12-14 |
Family
ID=76807652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/245,449 Pending US20230399798A1 (en) | 2020-09-28 | 2021-07-01 | Drive Arrangement and Drive Arrangement for a Twin-Wire Press |
Country Status (8)
Country | Link |
---|---|
US (1) | US20230399798A1 (en) |
EP (1) | EP4217538B1 (en) |
JP (1) | JP2023546644A (en) |
CN (1) | CN116209808A (en) |
AT (1) | AT523269B1 (en) |
AU (1) | AU2021349971A1 (en) |
CA (1) | CA3190878A1 (en) |
WO (1) | WO2022063453A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1427925A1 (en) * | 1965-08-07 | 1969-01-23 | Klose Kommandit Ges | Electric gear roller |
DE1285972B (en) * | 1966-05-27 | 1969-01-02 | Neumann Ohg | Straightening roller drive for sheet metal straightening machines |
DE2629039A1 (en) * | 1976-06-29 | 1978-01-12 | Bauer Eberhard Gmbh | INDIVIDUALLY DRIVEN ROLLER ROLLER |
CH671892A5 (en) * | 1987-02-03 | 1989-10-13 | Lauener Eng Ag | Synchronised individual drive for rolling mills - individual drives mounted on roller bearing housings to improve coordination and reliability |
SE527250C2 (en) * | 2004-06-14 | 2006-01-31 | Metso Paper Inc | Frame for twin-wire press to dewater fiber suspension and form continuous web has pair of longitudinal side members releasably connected by distance elements and having upper and lower side members with flat sheet metal elements |
DE102006060853A1 (en) * | 2006-12-22 | 2008-06-26 | Voith Patent Gmbh | Roller drive unit |
DE202013009581U1 (en) * | 2012-11-08 | 2013-11-28 | Metso Paper, Inc. | Arrangement for mounting a rotating means to a roll axis |
-
2020
- 2020-09-28 AT ATA50823/2020A patent/AT523269B1/en active
-
2021
- 2021-07-01 WO PCT/EP2021/068249 patent/WO2022063453A1/en active Application Filing
- 2021-07-01 AU AU2021349971A patent/AU2021349971A1/en active Pending
- 2021-07-01 US US18/245,449 patent/US20230399798A1/en active Pending
- 2021-07-01 EP EP21739107.7A patent/EP4217538B1/en active Active
- 2021-07-01 JP JP2023513242A patent/JP2023546644A/en active Pending
- 2021-07-01 CN CN202180054045.5A patent/CN116209808A/en active Pending
- 2021-07-01 CA CA3190878A patent/CA3190878A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
AU2021349971A1 (en) | 2023-03-09 |
EP4217538A1 (en) | 2023-08-02 |
AT523269A4 (en) | 2021-07-15 |
EP4217538C0 (en) | 2024-03-13 |
CN116209808A (en) | 2023-06-02 |
WO2022063453A1 (en) | 2022-03-31 |
EP4217538B1 (en) | 2024-03-13 |
AT523269B1 (en) | 2021-07-15 |
JP2023546644A (en) | 2023-11-07 |
CA3190878A1 (en) | 2022-03-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1094844C (en) | Drive axle assembly for use in tandem axle arrangements and pinion shaft subassembly therefor | |
CN107159372B (en) | Double-roller crusher | |
CN101636580A (en) | Power distribution wind-force worm gearing | |
US4903518A (en) | Roll driving apparatus for rolling mill | |
US8702022B2 (en) | Roller mill with driven grinding roller | |
US20230399798A1 (en) | Drive Arrangement and Drive Arrangement for a Twin-Wire Press | |
USRE39323E1 (en) | Inter-axle differential assembly for a tandem drive axle set | |
CN110242739A (en) | Support device and industrial application for transmission mechanism pair | |
US6178884B1 (en) | Drive for a rotating component of a rotary printing press | |
US6401561B1 (en) | Bowl mill transmission | |
CA1092438A (en) | Drive system for rotary printing presses | |
US6368244B1 (en) | Bowl mill transmission | |
EP0118939B1 (en) | Supercompact rolling group with rolls supported at one end, and a rolling line comprising groups thus formed | |
PL232217B1 (en) | Driving system for a vertical roller mill | |
CN1158295A (en) | Side wall structure of printing equipment in wheeled offset press | |
CN101878081A (en) | Drive device | |
US8418610B2 (en) | Printing unit | |
EP1564330B1 (en) | Drive of a cylinder or roll of a paper or board machine and replacement kit for a drive of a cylinder or roll of a paper or board machine | |
US5935038A (en) | Rotary gear drive system having bevel input gears | |
CA2143983C (en) | Drive gear for a group of cylinders and method in the drive of cylinders | |
GB2203221A (en) | Deflection compensating roller assembly | |
US4879924A (en) | Gearing for driving the rolls of a roll train | |
KR20050004798A (en) | Compacting press for bulk materials | |
US3456605A (en) | Torque-compensating supporting arrangement | |
NO316214B1 (en) | Device for supplying corrugated cardboard |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ANDRITZ AG, AUSTRIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MEHINAGIC, MAHIR;KULHANEK, EWALD;SIGNING DATES FROM 20230302 TO 20230308;REEL/FRAME:062990/0315 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |