US3756093A - Paper machine drying cylinder block - Google Patents

Paper machine drying cylinder block Download PDF

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Publication number
US3756093A
US3756093A US00264234A US3756093DA US3756093A US 3756093 A US3756093 A US 3756093A US 00264234 A US00264234 A US 00264234A US 3756093D A US3756093D A US 3756093DA US 3756093 A US3756093 A US 3756093A
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US
United States
Prior art keywords
flange
primary shaft
gear
cone gear
improvement
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.)
Expired - Lifetime
Application number
US00264234A
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English (en)
Inventor
M Kurkinen
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.)
OSAKEYHTIOKYMMENE K AB
Original Assignee
OSAKEYHTIOKYMMENE K AB
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 OSAKEYHTIOKYMMENE K AB filed Critical OSAKEYHTIOKYMMENE K AB
Application granted granted Critical
Publication of US3756093A publication Critical patent/US3756093A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21F7/02—Mechanical driving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/1966—Intersecting axes
    • Y10T74/19665—Bevel gear type

Definitions

  • the drying cylinders of a paper machine drying cylinder block are provided with a joint driving system in which the pin of almost every drying cylinder is connected to a pin gear type reduction gear having a primary shaft positively connected to a drive shaft which is perpendicular to the cylinder pins and through a cone gear pair at one end of the primary shaft.
  • an overload clutch in the form of a first flange fixed near the one end of the primary shaft, a second flange attached axially slidable at the one end of the primary shaft to define an annular recess with the first flange for receiving one cone gear of the cone gear pair, and means for pressing the one cone gear between the first and second flanges.
  • Paper machine drying cylinders are usually equipped with a driving apparatus. Several cylinders form a cylinder block with a joint drive which gives them the same peripheral velocity.
  • the individual cylinders of a cylinder block are, furthermore, connected with each other by two endless drying felts, the upper felt and the lower felt. When the felts are wide and strong they can transmit powerful moments.
  • interval blind moments can be restricted to a moderate level by individual drive, in other words, by equipping each cylinder with its own driving engine.
  • blind moments can be restricted by reducing the size of the cylinder blocks or by making some of the cylinders felt-drawn.
  • Machine damage caused by a blind moment can also be eliminated by overdimensioning the driving apparatus and other structures.
  • This invention relates to auxiliary devices for moderating the blind moments occurring in the mechanical joint drive of a paper machine drying cylinder block, taking into consideration the strength of the structure as well as the special requirements set by the paper track.
  • paper machine herein denotes a machine intended for producing paper, cellulose, or some other continuous weblike product, and employing several cylinders through which runs at least one endless felt, wire, or other organ capable of transmitting power.
  • the occurrence of peak loads caused by extreme blind moments is eliminated by providing the power transmission appliance of each cylinder with its own overload clutch which can be adjusted to comply with the dimensioning of the driving apparatus.
  • the differences between the felt speed and the peripheral velocity of the cylinder caused by variations in felt length are eliminated partly by the elasticity of the felt and partly by overload clutch slide.
  • the slide is produced either by the felt pulling the cylinder at a velocity greater than that provided by the drive, or by the felt slowing down the cylinder, or by the felt pulling one cylinder and slowing down another in a single cylinder block.
  • the pins of the drying cylinders have been provided with pin gear type reduction gears. This makes it possible to measure from the outside the torsional moments inside the power transmission equipment by means of power measuring organs known as such and situated at the anchorage points of the pin gears.
  • the overload clutches inside the pin gears are adjusted on the basis of the measured torsional moments.
  • FIG. 1 shows a section of the drying cylinders of one cylinder block with its driving apparatus as seen from the driving side
  • FIG. 2 shows a longitudinal section of a pin gear type lowering gear mounted on the pin of one drying cylinder, also showing a longitudinal section of the cone gear at the end of the primary shaft with its built-in spring-loaded overload clutch,
  • FIG. 3 is the same as FIG. 2, the only difference being that the overload clutch is driven by a hydraulic cylinder and is remote-controlled.
  • the paper machine driving apparatus shown in the figures works as follows: The entire drying cylinder block is started and stopped through release mechanism l. The speed control between the separate drying blocks and the other components of the paper machine takes place before the release mechanism. From the release mechanism power is transmitted through connecting shaft 2 to cone gear 3, from which the drive proceeds directly to lower driving shaft 6 through the vertical shaft inside box 4 and upper cone gear 5 to upper driving shaft 7.
  • pin gear type lowering gear 10 has been mounted on pin 9.
  • Cone gear 11 has been mounted on the primary shaft of lowering gear 10, and through the cone gear runs shaft 12 functioning as part of the driving shaft.
  • the pin gear moment is received by supporting point 13 which is attached to the frame and also supports car 14 of the gear.
  • Attached to the ear is organ 15 which measures the force received by the supporting point, the torsional moment being calculated on the basis of this force.
  • Pin gear wheel 16 is mounted on the pin of the drying cylinder by hole 17.
  • Cone gear 20 on driving shaft 12 spins cone wheel 22 on primary shaft 21.
  • a friction gear is built inside cone wheel 22.
  • the following components can be distinguished in the friction gear: fixed flange 24 fastened with wedge 23, and flange 25 moving only axially in relation to primary shaft 21.
  • Flange 25 is affected by the force of disk spring 26.
  • the compressive force of the disk spring can be adjusted by nut 27 on which locking device 28 has been mounted.
  • Cone gear 29 has been attached with bearings to the nave of flange 25 and it rests against fixed flange 24 with the help of sliding surfaces 30 and against moving flange 25 with the help of friction surfaces 31.
  • Oil grooves 32 have been provided for lubricating the sliding'and the friction surfaces.
  • the torsional moment from the driving shaft to the primary shaft of the pin gear has been limited to the value specified for the overload clutch; if the moment is higher than this the clutch will slide.
  • Gear 33 mounted on the primary shaft spins the drying cylinder through gear 16. Cylinder gears and cone gears with overload clutches are incorporated in a single revolving lubricating system from which oil accumulates into oil spaces 34 and 35.
  • FIG. 3 shows a different structure in that the overload clutch compressed with hydraulic power instead of spring force.
  • flange-like piece 38 has been fastened with screws 37 at the end of the primary shaft.
  • Ring-like piston 39 functions inside piece 38, and on the inner and outer cylindrical surfaces of the piston there are gaskets 40 and 41. Ring piston 39 compresses moving flange 25 creating the frictional force of the overload clutch.
  • Hydraulic pressure is produced in area 42 behind the ring piston through bores 43 and 44. The hydraulic pressure is conducted from the pump through the pressure control valve into main shaft bore 44 with the help of gasket box 47 of shaft extension 46 reaching through bearing cover 45, and also with the help of fixed pipes 48.
  • the clutch can be adjusted only when the machine has been switched off, and even then the cover of the gear box must be opened.
  • the adjustment can be made while the machine is in operation. The adjustment can then be made on each clutch individually or on several clutches simultaneously.
  • the clutches can also be released and coupled in groups, for example the upper cylinders as one and the lower cylinders as another, both by means of the closing valves.
  • the adjustment is made by means of pressure control valves, e.g. on the basis of the measured moments of the pin gears.
  • a pressure control valve can be installed which is controlled by the force affecting supporting point 13 and which automatically restricts the maximum moment to the desired level.
  • the overload clutch can also be installed at another point of the main shaft, e.g. in connection with gear 33.
  • a second flange attached axially slidable at the one end of the primary shaft and defining an annular recess with the first flange for receiving one cone gear of the cone gear pair;
  • the means for compressing the one cone gear between the first and second flange comprises a disk spring adapted to force the second flange towards the first flange.
  • the means for compressing the one cone gear between the first and second flanges comprise a flange-like piece attached to the one end of the primary shaft and defining an annular cavity with the second flange, which cavity encompasses an annular piston;
  • the means for introducing hydraulic pressure comprise a bore through the primary shaft from the other end thereof to the cavity between the piston and the flange-like piece, and inlet means for connecting the bore with an external fluid pressure source.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Transmission Devices (AREA)
US00264234A 1971-06-24 1972-06-19 Paper machine drying cylinder block Expired - Lifetime US3756093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI1810/71A FI53149C (online.php) 1971-06-24 1971-06-24

Publications (1)

Publication Number Publication Date
US3756093A true US3756093A (en) 1973-09-04

Family

ID=8506226

Family Applications (1)

Application Number Title Priority Date Filing Date
US00264234A Expired - Lifetime US3756093A (en) 1971-06-24 1972-06-19 Paper machine drying cylinder block

Country Status (6)

Country Link
US (1) US3756093A (online.php)
DE (1) DE2229676C3 (online.php)
FI (1) FI53149C (online.php)
GB (1) GB1388193A (online.php)
SE (1) SE393649B (online.php)
SU (1) SU401052A3 (online.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024909A1 (de) * 2005-05-31 2006-12-14 Volkswagen Ag Winkelgetriebe eines Kfz-Antriebsstrangs
CN105090449A (zh) * 2015-09-11 2015-11-25 南京宁嘉机电有限公司 驱动造纸机烘缸的组合齿轮箱

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2203997C1 (ru) * 2002-02-26 2003-05-10 Куценко Борис Николаевич Многодвигательный электропривод бумагоделательной машины

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US573119A (en) * 1896-12-15 weiss
FR822721A (fr) * 1936-06-06 1938-01-06 Ets Ringhoffer Tatra Sa Montage de roues dentées conjuguées pour commande d'essieux oscillants
DE804275C (de) * 1948-12-29 1951-04-19 Stromag G M B H Federnde Druckscheibe, insbesondere fuer Lamellenkupplungen
US3262529A (en) * 1964-01-24 1966-07-26 Gulf Kramer Corp Fluid pressure and mechanically operated clutch
US3503478A (en) * 1967-02-07 1970-03-31 Hanning Elektro Werke High and low speed motors connected by torque limiting clutch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US573119A (en) * 1896-12-15 weiss
FR822721A (fr) * 1936-06-06 1938-01-06 Ets Ringhoffer Tatra Sa Montage de roues dentées conjuguées pour commande d'essieux oscillants
DE804275C (de) * 1948-12-29 1951-04-19 Stromag G M B H Federnde Druckscheibe, insbesondere fuer Lamellenkupplungen
US3262529A (en) * 1964-01-24 1966-07-26 Gulf Kramer Corp Fluid pressure and mechanically operated clutch
US3503478A (en) * 1967-02-07 1970-03-31 Hanning Elektro Werke High and low speed motors connected by torque limiting clutch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024909A1 (de) * 2005-05-31 2006-12-14 Volkswagen Ag Winkelgetriebe eines Kfz-Antriebsstrangs
CN105090449A (zh) * 2015-09-11 2015-11-25 南京宁嘉机电有限公司 驱动造纸机烘缸的组合齿轮箱
CN105090449B (zh) * 2015-09-11 2017-07-25 南京宁嘉机电有限公司 驱动造纸机烘缸的组合齿轮箱

Also Published As

Publication number Publication date
FI53149B (online.php) 1977-10-31
DE2229676C3 (de) 1979-02-22
DE2229676A1 (de) 1973-03-01
SE393649B (sv) 1977-05-16
DE2229676B2 (de) 1978-06-29
GB1388193A (en) 1975-03-26
SU401052A3 (online.php) 1973-10-01
FI53149C (online.php) 1978-02-10

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