US3706237A - Device for driving a rotary element capable of deformation and of displacement parallel to its theoretical axis of rotation - Google Patents

Device for driving a rotary element capable of deformation and of displacement parallel to its theoretical axis of rotation Download PDF

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Publication number
US3706237A
US3706237A US184557A US3706237DA US3706237A US 3706237 A US3706237 A US 3706237A US 184557 A US184557 A US 184557A US 3706237D A US3706237D A US 3706237DA US 3706237 A US3706237 A US 3706237A
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US
United States
Prior art keywords
housing
rim
pinion
plane
rotary 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.)
Expired - Lifetime
Application number
US184557A
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English (en)
Inventor
Gerard Pere
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.)
Creusot Loire SA
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Creusot Loire SA
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Filing date
Publication date
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/025—Support of gearboxes, e.g. torque arms, or attachment to other devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/04—Bearings with only partial enclosure of the member to be borne; Bearings with local support at two or more points
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/02004—Gearboxes; Mounting gearing therein the gears being positioned relative to one another by rolling members or by specially adapted surfaces on the gears, e.g. by a rolling surface with the diameter of the pitch circle
    • 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
    • Y10T74/19628—Pressure distributing

Definitions

  • ABSTRACT A device for driving a rotary element, more particularly a rotary kiln, capable of deformation and displacement along its axis and comprising atoothed rim driven by a pinion mounted in a housing articulated on a fulcrum and bearing on two cylindrical tracks coaxial with the rim by way of at least one pair of rollers, characterized in that the housing is connected to a fixed block by a member capable of producing displacement of the fulcrum in a direction parallel to the axis of rotation of the kiln, freely following displacements of the kiln.
  • the driving devices usually comprise a toothed rim fixed to and coaxial with the rotary element and means for rotating the rim by way of a driving member.
  • the driving member must be able to follow the deformations of the rim.
  • the invention relates more specifically to driving devices in which the rim driving member comprises a housing providedwith at least two rollers each of which bears on one of two cylindrical tracks coaxial with the rim the rim, and at least one pinion driven by the rim rotat- Y ing means, mounted on the housing, having its axis parallel to that of the rim and meshing with the rim.
  • the rim driving pinion is therefore connected to the rim and can remain in contact with the teeth whatever the deformation to which the rim is subjected. Since the pinion must, of course, be held if it is to transmit rotary motion to the rim, the device comprises a member for connecting the housing to a fixed component, this connecting member being pivoted on a fulcrum for the housing.
  • the connecting member is usually a draw-bar whose ends are connected by universal joints to the housing fulcrum and to a fixed component.
  • This form of coupling is generally fairly satisfactory.
  • the rotary element is displaced along its axis. This occurs, for example, with rotary kilns in which expansion may cause appreciable axial displacement of the rim due to the considerable length of the kiln, and to which, moreover, a reciprocating movement along their axis is usually systematically imparted to prevent the supportv ing rollers from always bearing on the same parts of the running surfaces.
  • An object of the invention is to provide a driving device which overcomes these disadvantages.
  • the connecting member is capable of causing displacement of the housing fulcrum in a direction parallel to the theoretical axis of rotation of the rotary element, freely following axial displacement of the rotary element.
  • the bearing reaction remains substantially in the central plane of the pinion during displacement of the rotary element.
  • a first embodiment of the invention which will be described below, is characterized in that the'connectingmember is an articulated system formed of a lever which is pivoted about the housing fulcrum and on whose ends are pivoted two' rods of equal lengthsextending on each side of the lever in a plane parallel to the pinion axis, the other end of each rod pivoting about a fixed axis perpendicular to this plane.
  • a second embodiment of the invention described below is characterized in that the connecting member is at least one strut pivoted on the housing fulcrum and bearing-on a fixed plane perpendicular to the resultant of the stresses applied to the housing during rotation of the driven rotary element at its normal running speed, along a cylindrical surface whose axis passes through the fulcrum, is in the central plane of the pinion and is parallel to the said fixed plane.
  • FIG. 1 represents a cross-section through part of the driving rim for a rotary element and the drivin member
  • FIG. 2 is an elevation in the direction II-II in FIG. 1, showing the driving member illustrated in FIG. 1;
  • FIG. 3 is an elevation 'of the connecting member on a larger scale, as seen in the direction IIIIII in FIG. 1;
  • FIG. 4 is a section on a line IV-IV in FIG. 3;
  • FIG. 5 is a section on a line V-V in FIG. 3;
  • FIG. 6 is a diagrammatic perspective view of the connecting member
  • FIG. 7 is a cross-section through a second embodiment of the invention.
  • FIG. 8 is an elevation of the connecting member in the second embodiment on a larger scale.
  • FIG. 9 is a section on a line IX-IX in FIG. 8.
  • the rotary element 1 is a cylindrical drum surrounded by a rim 2, provided on its circumference with toothing 3 meshing with a pinion 4 whose axis is parallel to the axis of the rim and which is mounted on a housing 5.
  • This housing consists chiefly of two side plates 51, 52 enclosing the pinion and connected by spacers so that the housing is rigid enough to hold the pinion pivot.
  • the rim 2 is provided, on each side of its plane 0 symmetry, with two cylindrical tracks 21, 22 coaxial with the rim.
  • a roller 53 pivotably mounted on the housing 5 runs along each of these tracks.
  • the housing 5 is articulated at a fulcrum 54, normally placed in the central plane of the pinion, on a system of articulated rods 6 (FIG. 2) consisting of a lever 60 which is pivoted at its center on a ball centered on the fulcrum 54 and on whose ends two rods 61, 62 are pivoted, the other ends of these rods 61, 62 turning respectively on pivots 63, 64 mounted on a fixed base 65.
  • the lengths of the rods 61, 62 are equal.
  • the pivots 63, 64 are parallel to one another and perpendicular to a plane passing through the axis of the pinion 4. The articulated system 6 therefore remains within this plane when it is deformed.
  • the articulated system 6 is shown diagrammatically in FIG. 6. It is well known that if in a mechanical system of this kind, known as a Watt system, the ratio between the lengths of the central lever 60 and of the rods 61, 62 is suitably chosen, the mid-point 54 of the lever will be displaced along a substantially straight line when the system is deformed, and the rods 61, 62 will turn through a substantially equal angle. As a result, a force exerted on the mid-point 54 at right-angles to the direction of the straight line A along which this point shifts will produce only a very small reaction in the direction of A due to the difference of inclination between the rods 61 and 62, this difference being practically zero, of course, if certain limits are observed.
  • the pinion 4 is applied to the teeth 3 by a resilient member 7 (FIG. 1) compressed between a fixed bearing block 71 and a pivot 72 on the housing 5. From the force applying the housing to the rim, the position of the rollers 53 and the orientation of the teeth reaction for a normal rotary-element driving torque, the average orientation of the resultant of the teeth in spite of axial displacement of the rotary element. It is therefore possible to transmit high torques'to the pinion at low speeds by way of a fixed motor-driven reducing unit 9.
  • the housing 5 which bears on the tracks 21 and 22.
  • rollers 53 by way of rollers 53 and is connected to the lever 60 by forces applied to the housing can easily be deduced.
  • the plane of the articulated system 6 is therefore directed according to this resultant.
  • the housing connecting member 6 just described may be combined with a coupling comprising a plurality of articulated systems similar to that forming the connecting member.
  • a coupling of this type is described in our US. Pat. application No. 7,100,193 filed on 6.1.71. It enables a driving torque to be transmitted to the pinion 4 while adsorbing longitudinal displacement of the pinion relative to the driving shaft, without causing any appreciable reaction to be exerted on the pinion.
  • the housing connecting member is a strut l0 articulated on a pivot 11 mounted on a fork joint 55 fixed to the housing.
  • the pivot 11 is preferably provided with a ball joint whose center forms the housing fulcrum 54, and is normally placed in the central plane of the pinion.
  • the strut 10 is shown in detail in FIGS. 8 and 9.
  • This strut 10 is supported on a fixed plane 12 perpendicular to the resultant of the stresses applied to the housing during rotation of the rotary element when driven at its normal running speed, by way of a cylindrical surface 13 whose axis passes through the fulcrum 54 and is parallel to the plane 12 and to the central plane of the pinion, the fulcrum 54 being in the said central plane.
  • This arrangement applies if.the housing 5 has four rollers 53 arranged in pairs on each side of the pinion axis. Under these conditions the resilient bearing means 7 can be sited so that the strut need support only the teeth reaction and is therefore placed parallel to the teeth reaction produced in the case of a normal rotary-element driving torque.
  • the end of the strut is held in a fork joint 14 attached to the fixed support.
  • the two side plates of this fork joint contain oblong orifices 141 to receive a pivot 101 which passes through the strut.
  • This pivot enables the strut to withstand unexpected traction, but does not impede rotation of the strut on the bearing surface 13.
  • keys 15 which slide in recesses in the strut and in the bearing member 12 prevent the strut from sliding and oblige the strut to pivot on its bearing surface 13.
  • the provision of the fulcrum on a ball joint enables the housing 5 bearing on the rollers 53 to follow any deformation of the rim while keeping the pinion engaged.
  • the housing 5 was provided with four bearing rollers and one articulated strut.
  • only two bearing rollers might be used.
  • two struts would be provided, in order to absorb the resultant of the stresses applied to the housing.
  • the sole purpose of the resilient member 7 is to apply the pinion to the rim, and its length can vary as it follows the displacements of the rotary element. If it is pivoted on the bearing block 71, therefore, it can transmit only slight axial reactions. However, to eliminate even these reactions, the bearing plane 71 is preferably parallel to the theoretical axis of rotation of the rotary element, and the resilient member 7 preferably bears on this plane either by way of an articulated system similar to the system 6 shown in FIG. 1 or, like the strut 10, along a cylindrical surface whose axis is parallel to this plane and perpendicular to the axis of rotation of the rotary element. The support would be identical to that shown in FIGS. 8 and 9, and the resilient member would therefore follow displacements of the rotary element freely, transmitting to the pinion a pressure which is always at right-angles to the pinion axis.
  • the plane of the articulated system 6 or of the strut 10 is parallel to the resultant of the stresses applied to the housing and also passes through the pinion axis. It may be useful to further separate the fulcrum from the tangent plane common to the pitch circles of the sets of teeth, so that the plane of the strut forms with the tangent plane an angle greater than the pressure angle. If so, the stress applying the pinion will increase in proportion to the torque transmitted, removing any risk of separation. If the position of the housing fulcrum is chosen correctly, the resilient member will therefore need to absorb, in addition to the weight of the driving member itself, only the force required to apply the pinion to the rim when stationary.
  • connecting members such as slides, might be suitable, provided that they produce displacement of the housing fulcrum in a direction parallel to the theoretical axis of rotation, while freely following displacement of the r0- tary element so that the bearing reaction remains substantially in the central plane of the pinion, without the connecting member being able to transmit to the housing an axial component due to the displacement of the rotary element.
  • the two embodiments described make it possible to absorb axial displacement of the kiln of the order of 60 mm on each side of its central position.
  • a device of this kind can transmit high torques to the rim and cab therefore use a fixed reducing unit, particularly if the device just described is combined with a coupling of the type described in the above-mentioned prior Application.
  • the same result would be obtained by combining the device described in the present Application with any other coupling capable of transmitting the torque and of absorbing axial displacement without producing a reaction on the floating pinion.
  • articulated system 6 used in the embodiment shown in FIG. 1 can absorb both thrust and traction without any axial reaction. If
  • the housing fulcrum could therefore be placed to either side of the axis of the driving pinion.
  • a driving device as claimed in claim-1 characterized in that the bearing reaction remains substantially in the central plane of the pinionduring displacement of the rotary element.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Transmission Devices (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
US184557A 1971-01-08 1971-09-28 Device for driving a rotary element capable of deformation and of displacement parallel to its theoretical axis of rotation Expired - Lifetime US3706237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7100525A FR2120565A5 (es) 1971-01-08 1971-01-08

Publications (1)

Publication Number Publication Date
US3706237A true US3706237A (en) 1972-12-19

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US184557A Expired - Lifetime US3706237A (en) 1971-01-08 1971-09-28 Device for driving a rotary element capable of deformation and of displacement parallel to its theoretical axis of rotation

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US (1) US3706237A (es)
JP (1) JPS5110314B1 (es)
AT (1) AT318998B (es)
BE (1) BE776091A (es)
CH (1) CH542417A (es)
DE (1) DE2163326C3 (es)
DK (1) DK137285B (es)
ES (1) ES398422A1 (es)
FR (1) FR2120565A5 (es)
GB (1) GB1375214A (es)
IT (1) IT945828B (es)
NL (1) NL7117564A (es)
NO (1) NO134188C (es)
SE (1) SE376068B (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890852A (en) * 1973-07-06 1975-06-24 Walter Schroder Drive for converters, rotating drums, plate conveyors or the like
US5660076A (en) * 1994-05-30 1997-08-26 Sunds Defibrator Woodhandling Oy Drive system of a rotating drum
US20120312113A1 (en) * 2010-03-01 2012-12-13 Kaestingschaefer Gerhard Drive for a rotary drum

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3104830C2 (de) * 1981-02-11 1984-10-11 A. Friedr. Flender Gmbh & Co Kg, 4290 Bocholt Antriebsanordnung
SE451397B (sv) * 1986-01-21 1987-10-05 Asea Ab Anordning for astadkommande av glappfritt ingrepp mellan ett kuggdrev och ett med detta samverkande kugghjul
DE4213916A1 (de) * 1992-04-28 1993-11-04 Krupp Polysius Ag Kippbewegliche laufrollenlagerung
FI102205B1 (fi) * 1997-03-19 1998-10-30 Sunds Defibrator Woodhandling Ruuvikuljetin

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167975A (en) * 1962-05-12 1965-02-02 Francois Durand Device for transmitting motion to a gear
US3299729A (en) * 1963-10-11 1967-01-24 Durand Francois Transmission mechanisms
US3490306A (en) * 1967-01-26 1970-01-20 Lohmann & Stolterfoht Ag Device for the actuation of a mangle wheel
US3534624A (en) * 1968-02-19 1970-10-20 Fives Lille Cail Flexible drive mechanism for rotary drums
US3572150A (en) * 1959-01-27 1971-03-23 Francois Durand Motion transmitting devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572150A (en) * 1959-01-27 1971-03-23 Francois Durand Motion transmitting devices
US3167975A (en) * 1962-05-12 1965-02-02 Francois Durand Device for transmitting motion to a gear
US3299729A (en) * 1963-10-11 1967-01-24 Durand Francois Transmission mechanisms
US3490306A (en) * 1967-01-26 1970-01-20 Lohmann & Stolterfoht Ag Device for the actuation of a mangle wheel
US3534624A (en) * 1968-02-19 1970-10-20 Fives Lille Cail Flexible drive mechanism for rotary drums

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890852A (en) * 1973-07-06 1975-06-24 Walter Schroder Drive for converters, rotating drums, plate conveyors or the like
US5660076A (en) * 1994-05-30 1997-08-26 Sunds Defibrator Woodhandling Oy Drive system of a rotating drum
US20120312113A1 (en) * 2010-03-01 2012-12-13 Kaestingschaefer Gerhard Drive for a rotary drum

Also Published As

Publication number Publication date
GB1375214A (es) 1974-11-27
NO134188C (es) 1976-09-01
DK137285C (es) 1978-07-17
SE376068B (es) 1975-05-05
CH542417A (fr) 1973-09-30
DE2163326A1 (de) 1972-08-24
BE776091A (fr) 1972-03-16
DE2163326B2 (de) 1974-10-10
FR2120565A5 (es) 1972-08-18
DK137285B (da) 1978-02-13
IT945828B (it) 1973-05-10
AT318998B (de) 1974-11-25
NL7117564A (es) 1972-07-11
DE2163326C3 (de) 1975-06-05
JPS5110314B1 (es) 1976-04-02
ES398422A1 (es) 1974-09-16
NO134188B (es) 1976-05-24

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