DK169927B1 - Piston engine with a Michell-type thrust bearing - Google Patents
Piston engine with a Michell-type thrust bearing Download PDFInfo
- Publication number
- DK169927B1 DK169927B1 DK021192A DK21192A DK169927B1 DK 169927 B1 DK169927 B1 DK 169927B1 DK 021192 A DK021192 A DK 021192A DK 21192 A DK21192 A DK 21192A DK 169927 B1 DK169927 B1 DK 169927B1
- Authority
- DK
- Denmark
- Prior art keywords
- pressure
- segments
- bearing
- thrust
- piston engine
- Prior art date
Links
Classifications
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/06—Sliding-contact bearings for exclusively rotary movement for axial load only with tiltably-supported segments, e.g. Michell bearings
-
- 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/321—Bearings or seals specially adapted for propeller shafts
-
- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/30—Ships, e.g. propelling shafts and bearings therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Description
DK 169927 B1DK 169927 B1
Opfindelsen angår en stempelmotor til fremdriv-ning af et fartøj og med en krumtapaksel med hovedleje-søler, som bærer krumtaparme, og hvor motoren har et trykleje af Michell-typen til optagelse af aksialtryk, 5 der fra en propeller til fremdrivning af fartøjet overføres gennem en aksel til tryklejet, som omfatter et bæreleje til understøtning af tryklejets akselafsnit, et første sæt tryksegmenter til overførsel af det fremadrettede akseltryk, som fremkommer, når propelleren 10 driver fartøjet fremover, og et andet sæt tryksegmenter til overførsel af det agterudrettede aksialtryk, som fremkommer, når propelleren bakker, hvor hvert sæt af tryksegmenter kan glide mod en tilhørende aksialvendt trykflade, der er fast forbundet med tryklejets aksel-15 afsnit.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a piston engine for propulsion of a vessel and having a crankshaft with main bearing columns carrying crank arms and the engine having a Michell-type thrust bearing for receiving axial pressure transmitted from a propeller for propulsion of the vessel through a thrust bearing shaft comprising a bearing bearing to support the thrust bearing shaft portion, a first set of thrust segments for transmitting the forward thrust thrust which emerges as the propeller 10 propels the vessel forward, and a second set of thrust segments for transmitting the stern thrust thrust resulting , when the propeller backs, where each set of pressure segments can slide against an associated axially facing thrust surface firmly connected to the shaft-15 section of the thrust bearing.
Traditionelt set er en sådan stempelmotor med et trykleje udformet ved, at en trykaksel er lejret i to bærelejer på en sådan måde, at en trykkrave med to ak-sialt modsat vendte trykflader ligger mellem de to bæ-20 relejer. Det første og det andet sæt tryksegmenter ligger på hver sin side af trykkraven i en tilhørende segmentholder, der i aksial retning ligger an mod en plan, aksialvendt sideflade på bærelejets hus, der hænger sammen med tryklejets fundament. Segmentholderen er i 25 radialretningen stillingsfikseret ved hjælp af tre med fundamentet forbundne punktunderstøtninger, der i akslens omkredsretning ligger adskilt med omtrent 90°. Segmentholderen og de deri anbragte tryksegmenter er hindret i drejning i akslens omkredsretning ved hjælp 30 af en travers eller segmentstopper, der som en separat enhed ligger hen over akslens øverste afsnit og er spændt ned mod segmentholderen ved hjælp af to bolte, som er fæstnet i gevindhuller i bærelejets hus.Traditionally, such a plunger motor having a pressure bearing is formed in that a pressure shaft is mounted in two bearing bearings in such a way that a pressure collar with two axially opposite facing faces lies between the two support bearings. The first and second sets of pressure segments lie on each side of the pressure collar in an associated segment holder, which acts in an axial direction against a flat, axially facing side surface of the bearing bearing housing which is connected to the foundation of the pressure bearing. The segment holder is positionally fixed in the radial direction by means of three point supports connected to the foundation, which are separated by about 90 ° in the circumferential direction of the shaft. The segment holder and the pressure segments therein are obstructed in rotation in the perimeter of the shaft by means of a traverse or segment stopper which, as a separate unit, extends over the upper section of the shaft and is clamped down against the segment holder by two bolts secured in threaded holes. in the carrier's house.
Når propelleren driver skibet fremad, vil det 35 forreste sæt tryksegmenter glide mod trykkravens frem-advendende trykflade og overføre aksialtrykket til seg- DK 169927 B1 2 mentholderen og videre over i det forreste bærelejes hus og ned i tryklejets fundament. Når propelleren bakker , vil det agterste sæt tryksegmenter på tilsvarende vis overføre aksialtrykket gennem segmentholderen og 5 det agterste bærelejes hus og ned i tryklejets fundament.As the propeller propels the ship forward, the front set of pressure segments will slide against the forward pressure face of the pressure collar and transfer the axial pressure to the segment holder and further into the front bearing housing and down into the bed bearing foundation. Similarly, as the propeller backs, the rear set of pressure segments will transmit the axial pressure through the segment holder and the housing of the rear bearing and down into the bed bearing foundation.
Fra det i 1918 udstedte britiske patent nr.From the 1918 British patent no.
112 272 kendes et trykleje med segmenter, der er anbragt på hver sin side af et bæreleje for at reducere 10 den aksellængde, der optages af tryklejet.112 272 discloses a thrust bearing having segments disposed on either side of a bearing bearing to reduce the shaft length occupied by the thrust bearing.
Opfindelsens formål er yderligere at mindske den aksiale længde, som kræves til indbygning af tryklejet, så at den totale indbygningslængde for fremdrivningsmo-toren med tryklejet bliver mindre.The object of the invention is further to reduce the axial length required for incorporation of the thrust bearing so that the total installation length of the thrust motor with the thrust bearing is reduced.
15 Med henblik herpå er stempelmotoren med trykle jet ifølge opfindelsen ejendommelig ved, at det første og det andet sæt tryksegmenter med tilhørende trykflade ligger aksialt på hver sin side af et hovedleje, og at enten det ene eller det andet sæt tryksegmenter glider 20 mod krumtaparmens aksialvendte sideflade.To this end, the piston jet piston engine according to the invention is characterized in that the first and second sets of pressure segments and associated pressure faces lie axially on either side of a main bearing, and that either one or the other set of pressure segments slides 20 towards the axial face of the crank arm. side surface.
Ved at anbringe tryksegmenterne på begge sider af det ene af motorens hovedlejer kan for det første det traditionelt brugte andet bæreleje undværes, og for det andet bliver tryklejet en integreret del af selve 25 motoren, og der kræves intet særskilt, pladsoptagende bæreleje til tryklejet, hvilket medfører, at akslen udenfor motoren har væsentlig kortere aksial længde end for stempelmotorer med de hidtil kendte tryklejer af Michell-typen.By placing the pressure segments on both sides of one of the main bearings of the motor, firstly, the traditionally used second bearing can be avoided, and secondly, the pressure bearing becomes an integral part of the engine itself, and no separate, space-bearing bearing is required for the pressure bearing, which This means that the shaft outside the motor has a significantly shorter axial length than for piston engines with the previously known Michell-type thrust bearings.
30 Det andet sæt tryksegmenter, som overfører aksi altrykket ved bakning, kan hensigtsmæssigt være beliggende mellem motorens agterste hovedleje og den bagud-vendte sideflade på den agterste krumtaparm, idet denne arm så kun påvirkes af baktrykket og ikke det væsent-35 ligt større aksialtryk, som kan forekomme, når propelleren driver skibet fremad.The second set of pressure segments which transmit the axial pressure during baking may conveniently be located between the rear main bearing of the engine and the rearward facing surface of the rear crank arm, this arm being then only affected by the back pressure and not substantially greater axial pressure. which may occur when the propeller is propelling the ship forward.
* * DK 169927 B1 3* * DK 169927 B1 3
Med henblik på yderligere at reducere det i motoren indbyggede tryklejes aksiale udstrækning kan tryksegmenterne i det andet sæt, som overfører aksial-trykket ved bakning, hensigtsmæssigt have mindre aksial 5 tykkelse end tryksegmenterne i det første sæt. Tryklejets aksiale længde er her mindsket med en afstand svarende til tykkelsesreduktionen af segmenterne i det andet sæt.In order to further reduce the axial extent of the thrust bearing built into the engine, the pressure segments of the second set which transmit the axial pressure upon baking may conveniently have less axial thickness than the pressure segments of the first set. The axial length of the thrust bearing is here reduced by a distance corresponding to the thickness reduction of the segments in the second set.
I en som følge af sin enkelhed foretrukken udfø-10 relsesform er bærelejets overfald udformet som en segmentstopper, som i monteret stand hindrer i det mindste det ene sæt tryksegmenter i rotation omkring akslens omdrejningsakse. Den tidligere kendte, separate segmentstopper kan dermed helt undværes, hvilket dels re-15 ducerer fremstillings- og montageomkostningerne i og med at lejet får et færre antal komponenter, dels åbner op for en yderligere reduktion af lejets aksiallængde, idet der ikke længere kræves noget frirum for montering af en separat segmentstopper.In a preferred embodiment, due to its simplicity, the support of the bearing bed is designed as a segment stopper which in mounted condition prevents at least one set of pressure segments in rotation about the axis of rotation of the shaft. The previously known separate segment stopper can thus be completely avoided, which partly reduces the manufacturing and assembly costs in that the bearing receives a smaller number of components and partly opens up for a further reduction of the bearing's axial length, since no more space is required. for mounting a separate segment stopper.
20 Ifølge endnu en udførelsesform ifølge opfindel sen kan lejets aksiale længde reduceres yderligere ved at den tidligere kendte segmentholder helt udelades. Segmenternes radiale bevægelse begrænses i stedet ved, at de første indgrebsorganer på segmenterne virker di-25 rekte sammen med andre indgrebsorganer, som er udformet i den struktur, der hænger sammen med tryklejets fundament og optager aksialtrykket. Tryklejets aksiale længde kan dermed reduceres med segmentholderens tykkelse.According to yet another embodiment of the invention, the axial length of the bearing can be further reduced by completely omitting the previously known segment holder. Instead, the radial movement of the segments is limited by the fact that the first engaging means on the segments interact directly with other engaging means which are formed in the structure which is related to the bed bearing foundation and accepts the axial pressure. The axial length of the thrust bearing can thus be reduced by the thickness of the segment holder.
Foretrukne udførelsesformer for stempelmotoren 30 ifølge opfindelsen beskrives herefter nærmere med henvisning til den skematiske tegning, hvor fig. 1 viser et længdesnit gennem et kendt trykleje af Michell-typen, fig. 2 et længdesnit gennem en første udførel-35 sesform for motoren med et trykleje ifølge opfindelsen, fig. 3 et længdesnit gennem en anden udførelsesform for motoren med et trykleje ifølge opfindelsen, DK 169927 B1 4 fig. 4 et fra krumtaphuset set endebillede af motoren med et trykleje ifølge opfindelsen, hvor akslen og et par af tryksegmenterne for overskueligheds skyld er udeladt, og 5 fig. 5 en illustration af yderligere detaljer til positionering og smøring af tryksegmenterne.Preferred embodiments of the piston motor 30 of the invention will now be described in more detail with reference to the schematic drawing, in which: FIG. 1 is a longitudinal section through a known Michell-type pressure bed; FIG. 2 is a longitudinal section through a first embodiment of the motor with a pressure bearing according to the invention; FIG. 3 is a longitudinal section through another embodiment of the motor with a thrust bearing according to the invention; FIG. 4 shows an end view of the crankcase of the engine with a pressure bearing according to the invention, where the shaft and a few of the pressure segments for clarity are omitted, and 5 fig. 5 is an illustration of further details for positioning and lubricating the pressure segments.
Tryklejet i fig. 1 har et akselafsnit 1, der strækker sig fra en bolteflange 2 til sammenboltning med en modsvarende flange på en mellemaksel eller en 10 propelleraksel og fremover til en krumtaparm 3, der er krympet fast på forenden af akselafsnittet 1.The pressure bed in FIG. 1 has a shaft section 1 which extends from a bolt flange 2 to bolt with a corresponding flange on an intermediate shaft or propeller shaft and henceforth to a crank arm 3 which is crimped on the front end of shaft section 1.
Akselafsnittet 1 er understøttet i et forreste bæreleje 4 og et agterste bæreleje 5. For overskueligheds skyld er bærelejernes overfald ikke vist. Mel-15 lem de to bærelejer har akselafsnittet 1 en radialt udragende trykkrave 6 med en forreste og en agterste aksialvendt trykflade 7, 8, der overfører de i akslen forekommende aksialtryk til et forreste sæt tryksegmenter 9 til overførsel af et fremadrettet aksialtryk 20 (tryk rettet mod venstre i fig. 1) eller til et agterste sæt tryksegmenter 10 til overførsel af bagudrettede aksialtryk. De to sæt tryksegmenter er monteret i hver sin segmentholder 11, 12, der i aksialretningen ligger an mod en plan sideflade 13, 14 på den struk-25 tur, der udgør underparten af det tilhørende bæreleje og er forbundt med tryklejets fundament 17. Når trykkraven 6 på det roterende akselafsnit 1 presser ind mod segmenterne 9 eller 10, vil friktionen mellem segmenterne og den tilhørende trykflade 7 eller 8 30 søge at trække segmenterne med rundt i akslens omløbsretning. For at hindre dette er segmentholderen og segmenterne fikseret i omløbsretningen ved hjælp af en segmentstopper 18 eller 19, der er aftageligt forbundet med den tilhørende struktur 15 eller 16.The shaft section 1 is supported in a front bearing 4 and a rear bearing 5. For the sake of clarity, the bearing bearings are not shown. In between the two bearing bearings, the shaft section 1 has a radially projecting pressure collar 6 with a front and rear axially facing pressure surface 7, 8 which transfers the axial pressure present in the shaft to a front set of pressure segments 9 for transferring a forward axial pressure 20 (pressure directed). to the left in Fig. 1) or to an aft set of pressure segments 10 for transmitting rearward axial thrusts. The two sets of pressure segments are mounted in each segment holder 11, 12, which in the axial direction abuts on a flat side surface 13, 14 of the structure which forms the lower part of the associated bearing and is connected to the foundation bed 17. 6 on the rotating shaft section 1 presses against the segments 9 or 10, the friction between the segments and the associated pressure surface 7 or 8 will try to pull the segments around in the direction of rotation of the shaft. To prevent this, the segment holder and segments are fixed in the direction of rotation by means of a segment stopper 18 or 19 which is detachably connected to the associated structure 15 or 16.
35 Lejet køles og segmenterne smøres ved hjælp af olie, som tilføres gennem olierør 20, 20a, som leder * til dyser, der kan sprøjte olie på segmenterne.The bearing is cooled and the segments are lubricated by oil supplied through oil pipes 20, 20a which guide * to nozzles capable of spraying oil on the segments.
k DK 169927 B1 5k DK 169927 B1 5
Tryklejet i fig. 2 er arrangeret omkring motorens agterste hovedleje 21, hvis underpart går ud i ét med motorens bundramme, der virker som fundament for tryklejet, og hvis overpart er delt i to lejeoverfald 5 22, 23, som er spændt sammen med underparten ved hjælp af bolte 24. Det første sæt tryksegmenter 25 kan glide mod trykkraven 6's forreste trykflade 7 og er i radialretningen styret af en segmentholder 26, som ligger an mod en aksialvendt sideflade 27 på hoved-10 lejets underpart. En segmentstopper 28 er boltet til motorens bundramme og hindrer segmenterne 25 og holderen 26 i bevægelse i akslens omløbsretning.The pressure bed in FIG. 2 is arranged around the rear main bearing 21 of the motor, the lower part of which extends into the bottom frame of the motor, which acts as a foundation for the thrust bearing, and the upper part of which is divided into two bearing overlays 5 22, 23 which are clamped together with the lower part by means of bolts 24 The first set of pressure segments 25 can slide against the front pressure surface 7 of the pressure collar 6 and is guided in the radial direction by a segment holder 26 which abuts an axially facing side surface 27 on the lower part of the main bearing. A segment stopper 28 is bolted to the bottom frame of the motor and prevents segments 25 and holder 26 from moving in the direction of rotation of the shaft.
Et andet sæt tryksegmenter 29 er på hovedlejets modsatte side anbragt mellem den bagudvendte side-15 eller trykflade 30 på krumtaparmen 3 og en modstående aksialvendt sideflade 31 på hovedlejets underpart.A second set of pressure segments 29 is disposed on the opposite side of the main bearing between the rear-facing side-15 or pressure surface 30 of the crank arm 3 and an opposing axially facing side surface 31 of the lower part of the main bearing.
Tryklejets akselafsnit 1 strækker sig på tilsvarende måde som i fig. 1 fra en bolteflange 2 til 20 indspændingsstedet i krumtaparmen 3, men akselafsnittet 1 er væsentlig kortere i lejet ifølge opfindelsen. Akselafsnittet 1 kan alternativt være en særskilt trykaksel, som fortil har en bolteflange til forbindelse med et akselstykke på fremdrivningsmotoren, på 25 en kobling eller på en gearudveksling.The shaft section 1 of the thrust bearing extends in a similar manner as in FIG. 1 from a bolt flange 2 to 20 the clamping location of the crank arm 3, but the shaft section 1 is substantially shorter in the bearing according to the invention. The shaft section 1 may alternatively be a separate thrust shaft, which at the front has a bolt flange for connection with a shaft piece on the propulsion motor, on a clutch or on a gear exchange.
Et aftageligt endedæksel 51 med en ind mod akslen liggende tætningsring 52 hindrer snavs og andre forureninger i at trænge ind i motoren og sikrer, at olie ikke lækker ud af motoren.A removable end cover 51 with a sealing ring 52 located against the shaft prevents dirt and other contaminants from entering the engine and ensures that oil does not leak out of the engine.
30 Det vil umiddelbart fremgå, at motoren med lejet ifølge opfindelsen indeholder væsentligt færre elementer end det tidligere kendte leje, hvorfor der udover den fordelagtigt korte indbygningslængde opnås en omkostningsbesparelse, fordi fremstillingen og installa-35 tionen af tryklejet er mere enkel.It will be readily apparent that the motor with the bearing of the invention contains substantially fewer elements than the prior art bearing, and therefore, in addition to the advantageously short installation length, a cost saving is obtained because the manufacture and installation of the pressure bearing is simpler.
Det forreste lejeoverfald 22 har tilstrækkelig stor aksial bredde til at rage lidt ind over trykseg- 6 DK 169927 B1 * menterne 29. Som det fremgår af fig. 4 er overfaldet i hver side udført med et fremspringende parti 33, der nedadtil er afsluttet i en radialgående anlægsflade 34, som ligger an mod overkanten af det øverste tryk-5 segment 29 og hindrer dette i at rotere sammen med akslen. Overfaldet 22 er dermed udformet som segmentstopper .The front bearing overlap 22 has sufficiently large axial width to extend slightly over the pressure segments 29. As can be seen in FIG. 4, the assault on each side is effected by a projecting portion 33 which is downwardly terminated in a radially extending abutment surface 34 which abuts the upper edge of the upper pressure segment 29 and prevents it from rotating with the shaft. The assault 22 is thus designed as segment stops.
Ved beskrivelsen af de forskellige udførelsesformer ifølge opfindelsen anvendes der samme henvis-10 ningsnummer for samme slags elementer.In describing the various embodiments of the invention, the same reference number is used for the same kind of elements.
I udførelsesformen i fig. 3 er det agterste le-jeoverfald 23' udført med en agterovervendende aksial udvidelse, som rager ind over tryksegmenterne 25'. Den aksiale udvidelse er udført med fremspringende partier 15 og anlægsflader for segmenterne på samme måde som vist i fig. 4 i forbindelse med lejeoverfaldet 22. Lejeoverfaldet 23' virker dermed som segmentstopper, og den tidligere anvendte separate segmentstopper kan udela des. i de viste udførelsesformer er lejeoverfaldet ud-20 formet i to dele 22, 23 for at lette montering og demontering af overfaldet, men hvis pladsen omkring lejet tillader det, er det naturligvis muligt at udforme le-jeoverfaldet i et stykke, der om ønsket kan være udformet som segmentstopper for det ene eller begge sæt 25 tryksegmenter.In the embodiment of FIG. 3, the rear bearing overlap 23 'is provided with a rear-facing axial extension which projects over the pressure segments 25'. The axial extension is made with projecting portions 15 and abutment surfaces of the segments in the same manner as shown in FIG. 4 in connection with the bearing overlap 22. The bearing overlap 23 'thus acts as segment stops and the previously used separate segment stops can be dispensed with. In the illustrated embodiments, the bearing overlap is formed in two parts 22, 23 to facilitate mounting and disassembly of the assault, but if space around the bearing permits, it is of course possible to design the bearing overlap in a piece which, if desired, can be designed. be designed as segment stops for either or both sets of 25 pressure segments.
Tryksegmenterne er sædvanligvis af støbejern og har en hvidmetalbelægning på den side, der skal glide mod trykfladen 7 eller 30. Tryksegmenterne skal have tilstrækkelig stor aksial tykkelse til, at segmenterne 30 ikke deformeres under overførslen af aksialtrykket, idet en sådan deformation vil ødelægge oliefilmen mellem tryksegmentet og den roterende flade 7 eller 30. Tryksegmenterne i det andet sæt 29 har væsentlig mindre aksial tykkelse end segmenterne i det første sæt 35 25, 25'. Dette er muligt uden at segmenterne 29 udsæt tes for utilladelig deformation, fordi den maksimale *.The pressure segments are usually of cast iron and have a white metal coating on the side to slide against the printing surface 7 or 30. The pressure segments must be of sufficient axial thickness that the segments 30 are not deformed during the transfer of the axial pressure, such deformation will destroy the oil film between the pressure segments. and the rotating surface 7 or 30. The pressure segments of the second set 29 have substantially less axial thickness than the segments of the first set 35 25, 25 '. This is possible without the segments 29 being subjected to unacceptable deformation because the maximum *.
r DK 169927 B1 7 aksialkraft under bakning er væsentlig mindre end den maksimale aksialkraft under fremdrift.r DK 169927 B1 7 axial force during baking is substantially less than the maximum axial force during propulsion.
Som nævnt kan tryklejet udformes uden den traditionelt anvendte segmentholder, så at segmenterne lig-5 ger direkte an mod den sideflade (27 eller 31), som skal optage aksialtrykket. Segmenternes bevægelse i radialretningen er i så fald begrænset ved hjælp af et af segmenterne båret første indgrebsorgan, som er styret ved indgreb med et andet indgrebsorgan, der sidder 10 fast på eller er udformet i den trykoptagende flade 27 eller 31. Som vist i fig. 2-4 kan det første indgrebsorgan være en cirkelbueformet gennemgående not 35 i segmentets sideflade, og det andet indgrebsorgan kan være en eller flere fremspringende tappe 36, der er 15 indskruet eller indpresset i tilhørende huller i sidefladen (27 eller 31). Noten 35 har passende en større bredde end diameteren af tappen 36, så at segmenterne har et begrænset spillerum i radialretningen. De sammenhørende indgrebsorganer kan naturligvis være udfor-20 met på anden vis, eksempelvis som en cirkelbueformet not i den faste sideflade 27, 30 og en modsvarende, cirkelbueformet ribbe 38, som kan være udformet ud i ét stykke med hvert af tryksegmenterne 29'', 25", se fig. 5.As mentioned, the thrust bearing can be designed without the traditionally used segment holder, so that the segments abut directly against the side surface (27 or 31) which is to absorb the axial pressure. The movement of the segments in the radial direction is then restricted by means of a first engaging means carried by the segments, which is controlled by engagement with a second engaging means, which is fixed to or formed in the pressure-absorbing surface 27 or 31. As shown in FIG. 2-4, the first engaging means may be a circular arcuate groove 35 in the side face of the segment, and the second engaging means may be one or more projecting pins 36 screwed or pressed into associated holes in the side face (27 or 31). Conveniently, the groove 35 has a greater width than the diameter of the pin 36, so that the segments have a limited clearance in the radial direction. The associated engaging means may, of course, be formed differently, for example as a circular arcuate groove in the fixed side face 27, 30 and a corresponding circular arcuate rib 38, which may be integrally formed with each of the pressure segments 29 '', 25 ", see Fig. 5.
25 I fig. 5 ses, at dete første sæt tryksegmenter 25" kan glide mod en sædvanlig trykkrave 6, mens det andet sæt tryksegmenter 29'', der skal optage aksialtrykket ved bakning, kan glide mod en i aksial retning kortere trykkrave 40, som er beliggende på bærelejets 30 modsatte side. Da tryklejet ifølge opfindelsen kun kræver meget ringe plads i aksialretningen, vil lejet normalt altid kunne opbygges omkring et passende bæreleje.In FIG. 5, it can be seen that the first set of pressure segments 25 "can slide against a conventional pressure collar 6, while the second set of pressure segments 29 '', which must take up the axial pressure during baking, can slide against an axially shorter pressure collar 40 which is located on the carrier bed. Since the pressure bearing according to the invention requires only very little space in the axial direction, the bearing can usually always be built around an appropriate bearing.
Tryksegmenterne ifølge opfindelsen kan på enkel vis smøres ved hjælp af et cirkelbueformet, perforeret 35 olierør 41, som ligger umiddelbart radialt inden for tryksegmenterne og kan overbruse disse med olie. Et sådant rør optager kun ringe plads i radialretningen.The pressure segments according to the invention can be simply lubricated by means of a circular arc-shaped, perforated oil tube 41 which is immediately radially within the pressure segments and can be sprayed with oil. Such a tube occupies little space in the radial direction.
Claims (8)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK021192A DK169927B1 (en) | 1992-02-19 | 1992-02-19 | Piston engine with a Michell-type thrust bearing |
| KR1019940702866A KR100239230B1 (en) | 1992-02-19 | 1993-02-15 | A piston engine with a thrust bearing of the michell type |
| JP51446293A JP3320725B2 (en) | 1992-02-19 | 1993-02-15 | Piston engine with Mitchell thrust bearing |
| DE4390622T DE4390622T1 (en) | 1992-02-19 | 1993-02-15 | Piston machine with a Michell type thrust bearing |
| PCT/DK1993/000055 WO1993017249A1 (en) | 1992-02-19 | 1993-02-15 | A thrust bearing of the michell type and a piston engine with such a bearing |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK21192 | 1992-02-19 | ||
| DK021192A DK169927B1 (en) | 1992-02-19 | 1992-02-19 | Piston engine with a Michell-type thrust bearing |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK21192D0 DK21192D0 (en) | 1992-02-19 |
| DK21192A DK21192A (en) | 1993-08-20 |
| DK169927B1 true DK169927B1 (en) | 1995-04-03 |
Family
ID=8090992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK021192A DK169927B1 (en) | 1992-02-19 | 1992-02-19 | Piston engine with a Michell-type thrust bearing |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3320725B2 (en) |
| KR (1) | KR100239230B1 (en) |
| DE (1) | DE4390622T1 (en) |
| DK (1) | DK169927B1 (en) |
| WO (1) | WO1993017249A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK200100412A (en) * | 2001-03-12 | 2002-09-13 | Man B & W Diesel As | Combustion engine for propeller shaft drive |
| DE10136638C2 (en) * | 2001-07-26 | 2003-11-20 | Man B&W Diesel A/S, Copenhagen Sv | reciprocating engine |
| WO2004001241A1 (en) * | 2002-06-19 | 2003-12-31 | Alstom Technology Ltd | Bearing for the rotor of a rotating machine |
| DE102008037677C5 (en) * | 2008-08-14 | 2022-10-27 | Renk Gmbh | POD drive |
| JP2011179661A (en) * | 2010-03-03 | 2011-09-15 | Mitsubishi Heavy Ind Ltd | Thrust bearing segment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH75689A (en) * | 1916-12-20 | 1918-01-16 | Bbc Brown Boveri & Cie | Combined support and support bearing with subdivided support surface |
| GB863299A (en) * | 1959-07-09 | 1961-03-22 | Svenska Turbin Aktiebolaget Lj | Improvements in thrust bearings |
| GB1269003A (en) * | 1969-04-24 | 1972-03-29 | Tacke Kg F | Improved marine propeller thrust bearing assembly |
| SE381722B (en) * | 1973-08-01 | 1975-12-15 | Stal Laval Turbin Ab | HYDRAULIC SUPPORTED BEARING BEARINGS |
| SE388176B (en) * | 1974-02-13 | 1976-09-27 | Howaldtswerke Deutsche Werft | AXIAL SLIDES FOR AXLAR SPEC. SHAFTS IN SHIPS |
| SU561690A1 (en) * | 1975-01-06 | 1977-06-15 | Angular contact support |
-
1992
- 1992-02-19 DK DK021192A patent/DK169927B1/en not_active IP Right Cessation
-
1993
- 1993-02-15 KR KR1019940702866A patent/KR100239230B1/en not_active IP Right Cessation
- 1993-02-15 WO PCT/DK1993/000055 patent/WO1993017249A1/en active Application Filing
- 1993-02-15 DE DE4390622T patent/DE4390622T1/en not_active Withdrawn
- 1993-02-15 JP JP51446293A patent/JP3320725B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DK21192A (en) | 1993-08-20 |
| WO1993017249A1 (en) | 1993-09-02 |
| JP3320725B2 (en) | 2002-09-03 |
| JPH07504261A (en) | 1995-05-11 |
| DE4390622T1 (en) | 1995-04-27 |
| KR100239230B1 (en) | 2000-01-15 |
| DK21192D0 (en) | 1992-02-19 |
| KR950700497A (en) | 1995-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5839928A (en) | Shifting mechanism for outboard drive | |
| US4452194A (en) | Outboard motor | |
| US5063895A (en) | Oil pump drive arrangement for a piston internal-combustion engine and method of making same | |
| CA2476811C (en) | Engine | |
| US4869121A (en) | Marine propulsion unit with improved drive shaft arrangement | |
| DK169927B1 (en) | Piston engine with a Michell-type thrust bearing | |
| US1910561A (en) | Marine propulsion device | |
| US5253547A (en) | Balancer device for in-line engine | |
| NL8002825A (en) | TRANSMISSION SYSTEM FOR BOAT ENGINES. | |
| JP2001200711A (en) | Piston oil-cooling device for engine | |
| US6123591A (en) | Shifting mechanism for marine transmission | |
| US7069895B2 (en) | Air intake system of outboard motor | |
| US5788546A (en) | Shift assistor for marine transmission | |
| US5800224A (en) | Splash and anti-cavitation plate for marine drive | |
| US5556312A (en) | Bearing arrangement for marine transmission | |
| US5558498A (en) | Propeller shaft assembly for marine propulsion system | |
| US6338324B1 (en) | Lubricating structure for a four-stroke engine | |
| US6904889B2 (en) | Engine for personal watercraft and crankshaft thereof | |
| JP6386239B2 (en) | Outboard motor | |
| US6022251A (en) | Water inlet for marine drive | |
| US5766046A (en) | Cooling water pickup for marine propulsion unit | |
| US6264515B1 (en) | Outboard motor | |
| US4959033A (en) | Marine propulsion device cover arrangement | |
| US7238070B2 (en) | Outboard motor | |
| JPH1018936A (en) | Fuel piping structure of outboard motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A0 | Application filed | ||
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |
Country of ref document: DK |