DK173468B1 - Internal combustion engine of the crosshead type having oil supply to the crosshead - Google Patents
Internal combustion engine of the crosshead type having oil supply to the crosshead Download PDFInfo
- Publication number
- DK173468B1 DK173468B1 DK58296A DK58296A DK173468B1 DK 173468 B1 DK173468 B1 DK 173468B1 DK 58296 A DK58296 A DK 58296A DK 58296 A DK58296 A DK 58296A DK 173468 B1 DK173468 B1 DK 173468B1
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- DK
- Denmark
- Prior art keywords
- crosshead
- guide
- oil supply
- combustion engine
- internal combustion
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
- F02F7/0007—Crankcases of engines with cylinders in line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0021—Construction
- F02F7/0034—Built from sheet material and welded casings
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C5/00—Crossheads; Constructions of connecting-rod heads or piston-rod connections rigid with crossheads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F2007/0097—Casings, e.g. crankcases or frames for large diesel engines
Description
i DK 173468 B1in DK 173468 B1
Den foreliggende opfindelse angår en forbrændingsmotor af krydshovedtypen med et motorstativ omfattende tværgående vægge, der bærer styreplaner for krydshovedernes guidesko, og hvor krydshovederne har en olietilførsel til smø-5 ring af krydshovedets lejeflader og andre af olietilførsel afhængige organer, hvilken olietilførsel er etableret gennem et rør, som består af en fast del og en med oliekanalerne i krydshovedets krydspind forbundet, bevægelig del.The present invention relates to a crosshead type internal combustion engine having a motor frame comprising transverse walls, carrying guides for the crosshead guide shoes, and wherein the crossheads have an oil supply for lubricating the crosshead bearing surfaces and other oil supply means which is an oil supply through which , which consists of a fixed part and a movable part connected to the oil channels in the crosshead of the crosshead.
Ved store, totakts forbrændingsmotorer af krydshoved-10 typen er det af hensyn til smøring af krydshovedets lejeflader og køling af stempeltoppen nødvendigt med en stabil olietilførsel med betydelig kapacitet til krydshovedet. Denne olietilførsel etableres på visse motortyper ved hjælp af et teleskoprør, med en bevægelig del, der er forbundet med 15 krydshovedet og en fast del, der er placeret i motorstativet langs ydersiden af cylinderforingen. Den bevægelige del er ført gennem en pakdåse, der er placeret nederst på den faste del.In the case of large, two-stroke internal combustion engines of the crosshead type, a stable oil supply with considerable capacity to the crosshead is required for lubrication of the bearing head bearing surfaces and cooling of the piston top. This oil supply is established on certain engine types by means of a telescopic tube, with a movable portion connected to the crosshead and a fixed portion located in the engine rack along the outside of the cylinder liner. The movable portion is passed through a packing box located at the bottom of the fixed portion.
Den bevægelige del af teleskoprøret er ved en kendt 20 konstruktion fastgjort til en på krydspinden påboltet konsol, der ligger an mod en plan udfræsning i krydspindens omkredsflade. Konsollen optager plads mellem krydshovedets guidesko og plejstangsøjet, der for at opnå tilstrækkelig lejeflade må udstyres med en forholdsvis stor diameter. Pla-25 ceringen af rørkonsollen på krydspinden har været en følge af, at ingen dele af krydshovedet strakte sig uden for cylinderaksen med en afstand, der var større end cylinderforingens yderdiameter. Teleskoprøret måtte derfor under alle omstændigheder skulle sluttes til en rørkonsol med en sådan 30 længde, at teleskoprøret kunne føres uden for cylinderforingen. Det har under disse forhold været formålstjenligt, at olietilgangen til krydspinden blev placeret i nærheden af de mest olieforbrugende organer, nemlig stempelkølingen og plejlstangslejet. Placeringen af teleskoprøret på en på 35 krydspinden monteret konsol medfører imidlertid en ubalance i krydspinden, der ved stempeltrækning kan få krydspinden til at dreje sig, så genmonteringen af stemplet vanskeliggø- 2 DK 173468 B1 res. Denne ubalance vanskeliggør vedligeholdelsen af motorens stempler og anses for en væsentlig ulempe.The movable part of the telescopic tube is, by a known construction, attached to a bracket bolted to the cross-stick, which abuts a flat cut-out in the circumferential surface of the cross-stick. The console takes up space between the crosshead guide shoes and the nursing rod eye, which in order to obtain sufficient bearing surface must be equipped with a relatively large diameter. The placement of the pipe bracket on the crosspiece has been the result of no parts of the crosshead extending beyond the cylinder axis at a distance greater than the outer diameter of the cylinder liner. Therefore, the telescopic tube had to be connected in any case to a pipe bracket of such length as to allow the telescopic tube to be moved outside the cylinder liner. Under these conditions, it has been expedient that the oil supply to the peg was placed near the most oil-consuming organs, namely the piston cooling and the connecting rod bearing. However, the location of the telescopic tube on a bracket mounted on the 35 pin causes an imbalance in the pin which can cause the pivot to rotate during piston pulling, making the reassembly of the piston difficult. This imbalance makes maintenance of the pistons difficult to maintain and is considered a major disadvantage.
Der kendes tillige en motorkonstruktion, hvor konsollen er boltet til en af guideskoene i området umiddelbart 5 under krydspindens leje i skoen. Også ved denne konstruktion har rørkonsollen en betydelig længde og den er derfor tung og ligesom de ovenfor omtalte konsoller sårbar overfor brud på grund af den dynamiske belastning.There is also known a motor structure in which the bracket is bolted to one of the guide shoes in the area immediately below the cross-leg bearing in the shoe. Also in this construction, the pipe bracket has a considerable length and it is therefore heavy and, like the brackets mentioned above, vulnerable to breakage due to the dynamic load.
Formålet med den foreliggende opfindelse er at mind-10 ske eller eliminere de ulemper, som forekommer ved de kendte konstruktioner. Opfindelsen tager især sigte på at udnytte de forhold, som forekommer ved motorkonstruktioner, hvor styreplanerne for krydshovedets guidesko indgår som et afstivende element i motorstativets tværgående afstivninger, 15 og hvor styreplanerne er placeret med indbyrdes forholdsvis stor afstand.The object of the present invention is to reduce or eliminate the disadvantages of the known constructions. The invention is particularly aimed at exploiting the conditions that occur in motor designs, where the control planes for the crosshead guide shoes are included as a stiffening element in the transverse struts of the motor frame, and where the control planes are spaced relatively apart.
Dette formål opfyldes ifølge opfindelsen ved at forbrændingsmotoren er ejendommelig ved, at guideskoene og styreplanerne er således indrettet, at dele af guideskoen 20 har større afstand fra stempelstangsaksen end ydersiden af cylinderforingen, at der i nævnte dele er placeret en med olietilførselsrørets bevægelige del forbundet olietilgang, at krydspinden er en udelt aksel, der forbinder krydshovedets to guidesko, at i det væsentlige hele den frie 25 længde mellem de to guidesko er udnyttet til lejeflade i krydshovedhusets underpart.This object is achieved according to the invention in that the internal combustion engine is characterized in that the guide shoes and guide planes are arranged so that parts of the guide shoe 20 are more distant from the piston rod axis than the outside of the cylinder liner, that an oil supply connected to the movable part of the oil supply pipe is placed in said parts. that the cross pin is an undivided shaft connecting the two guide shoes of the cross head, that substantially all of the free length between the two guide shoes is utilized for bearing surface in the lower part of the cross head housing.
Ved at udforme guideskoene og styreplanerne således, at de yderste dele af guideskoene strækker sig et stykke uden for ydersiden af cylinderforingen, er afstanden i moto-30 rens tværretning mellem styreplanerne øget såpas meget, at krydspindens diameter og den udvendige diameter af plejl-stangsøjet kan gøres større end i de kendte motorer, og/el-ler at plej Istangsøjet kan laves længere i motorens længderetning. Begge disse forhold bidrager til, at krydshovedets 35 lejeareal kan forøges, hvilket enten kan udnyttes til at mindske den specifikke lejebelastning eller til at overføre større trykkræfter fra stempelstangen til plej Istangen.By designing the guide shoes and guide planes such that the outermost parts of the guide shoes extend a little outside the outside of the cylinder liner, the distance in the transverse direction of the motor between the guide planes is increased so much that the diameter of the cross-stick and the outside diameter of the connecting rod eye can be increased. can be made larger than in the known motors, and / or care can be made longer in the longitudinal direction of the motor. Both of these conditions help to increase the bearing area of the crosshead 35, which can either be utilized to reduce the specific bearing load or to transfer greater compressive forces from the piston rod to the care rod.
Ved opfindelsen placeres olietilførselsrøret tæt op 3 DK 173468 B1 mod de tværgående afstivninger og på selve guideskoen. Behovet for en lang rorkonsol elimineres derved, hvorved risikoen for brud på konsollen elimineres. Behovet for demontering af tilforselsreret ved vedligeholdelse af stempler fjernes 5 og tilgængeligheden til krydshovedets bevægelige dele forbedres. Den væsentligste gevinst er dog, at lejebredden i plejlstangsøjet kan forøges, hvorved krydspindens diameter og plejlstangsojets dimensioner kan reduceres med en vægtbesparelse i motorens bevægelige dele til følge. Konstruk-10 tionen ifølge opfindelsen åbner tillige mulighed for at udforme olietilforselsroret som et teleskoprør med for fejlopretninger tolerante samlinger, hvorved risikoen for havari på grund af træthedsbrud i teleskoprørets dele reduceres.In the invention, the oil supply pipe is placed close up 3 on the transverse struts and on the guide shoe itself. The need for a long rudder console is thereby eliminated, thereby eliminating the risk of breach of the console. The need for dismantling the feedstock with the maintenance of pistons is removed 5 and accessibility to the moving parts of the crosshead is improved. The most important gain, however, is that the bearing width of the connecting rod eye can be increased, thereby reducing the diameter of the crosspiece and the connecting rod eye, resulting in a weight saving in the moving parts of the motor. The structure of the invention also opens the possibility of designing the oil supply tube as a telescopic tube with fault-tolerant joints, thereby reducing the risk of failure due to fatigue failure in the parts of the telescopic tube.
I den enkleste form for opfindelsen er olietilgangen 15 placeret på oversiden af guideskoen. Ved denne udformning udnyttes det sædvanlige design for guideskoen med en rundt-gående flange omkring en pladeforraet krop. Flangen danner støtte for monteringen af olietilforslens bevægelige rordel og oliekanalen kan fores langs guideskoens krop.In the simplest form of the invention, the oil inlet 15 is located on the upper side of the guide shoe. In this design, the usual design for the guide shoe is utilized with a circular flange around a plate-lined body. The flange provides support for the mounting of the movable tube part of the oil supply and the oil channel can be fed along the body of the guide shoe.
20 Ifølge en foretrukken udførelsesform er olietilfor selsrørets bevægelige del monteret direkte på guideskoen.According to a preferred embodiment, the movable portion of the oil feed tube is mounted directly on the guide shoe.
Flangen på guideskoens overside har tilstrækkelig bredde og styrke til at kunne forsynes med et plant område, hvor olietilførselsrøret kan påboltes direkte. Ved denne udformning 25 sikres tillige en placering tæt ved den tværgående afstivningsvæg, hvor olietilforselsroret ikke vil være i vejen for normal vedligeholdelse af krydshoved og stempel.The flange on the upper side of the guide shoe has sufficient width and strength to be provided with a flat area where the oil supply pipe can be directly bolted. This configuration 25 also ensures a location close to the transverse stiffening wall, where the oil supply pipe will not interfere with normal crosshead and piston maintenance.
Med henblik på at opnå en optimal placering af olietilførselsrørets faste del i motorens cylinderramme kan det 30 være hensigtsmæssigt, at olietilgangen er placeret i en i forhold til guideskoens midterplan forskudt konsol. Ved en sådan udformning åbnes den mulighed for at anbringe olietilførselsroret helt tæt op til afstivningsvæggen eller om ønsket at anbringe olietilgangen lavere end guideskoens over-35 side, hvilket kan være fordelagtigt, hvis der ved en motor med lav byggehøjde skal skaffes plads under skylleluftkamme-rets underside til pakdåsen omkring olietilførselsrørets bevægelige del.In order to achieve an optimum position of the oil supply tube fixed portion in the engine cylinder frame, it may be convenient for the oil supply to be located in a bracket displaced relative to the guide plane center plane. In such a design, it is possible to position the oil supply pipe very close to the stiffening wall or, if desired, to position the oil supply lower than the upper side of the guide shoe, which may be advantageous if space with a low build height motor is to be provided under the rinsing chamber chamber. underside of the sealing box around the movable portion of the oil supply tube.
4 DK 173468 B14 DK 173468 B1
Ifølge de foretrukne udførelsesformer er konsollen ud i ét med guideskoen, hvilket åbner mulighed for den enkleste konstruktion og medvirker til en reduktion af massen af de frem- og tilbagegående dele i motoren.According to the preferred embodiments, the console is integral with the guide shoe, which allows for the simplest construction and contributes to reducing the mass of the reciprocating parts of the engine.
5 En alternativ særlig montage- og reparationsvenlig konstruktion, hvor røret, gennem hvilket olietilførslen er etableret, er udformet som et teleskoprør, er ejendommelig ved, at olietilgangen er placeret i det indre af en parallelt med stempelstangen forløbende boring, idet teleskoprø-10 rets bevægelige del er monteret gennem denne boring. Montagemuligheden gennem guideskoen betyder, at teleskoprørets bevægelige del kan udskiftes uden at guideskoen demonteres, idet røret monteres i guideskoens øverste stilling. Konstruktionen åbner tillige mulighed for, at teleskoprørets 15 forbindelse med guideskoen kan udformes således, at den er tolerant over for små vinkelbevægelser, hvilket bevirker, at risikoen for træthedsbrud i røret reduceres, specielt hvis der forekommer unøjagtigheder i opretningen eller slør i guideskoens føring. Desuden forøges afstanden mellem pakdå-20 sen, der styrer det bevægelige teleskoprør og olietilgangen, hvorved størrelsen af eventuelle vinkelbevægelser reduceres.An alternative special assembly and repair-friendly construction in which the tube through which the oil supply is established is formed as a telescopic tube is characterized in that the oil supply is located in the interior of a bore extending parallel to the piston rod, the telescopic tube being movable. part is mounted through this bore. The mounting option through the guide shoe means that the movable part of the telescopic tube can be replaced without removing the guide shoe, as the tube is mounted in the top position of the guide shoe. The design also allows the connection of the telescopic tube 15 to the guide shoe so that it is tolerant to small angular movements, which reduces the risk of fatigue fracture in the tube, especially if inaccuracies occur or blur in the guide shoe guide. In addition, the distance between the packing box controlling the movable telescopic tube and the oil supply is increased, thereby reducing the size of any angular movements.
Arrangementet af oliekanalerne, der er forbundet med olietilgangen, bliver særlig enkelt, når ifølge opfindelsen olietilgangen i guideskoen er sluttet til den oliekanal i 25 krydspinden, der tilfører olie til guideskoens glideflader mod styreplanerne.The arrangement of the oil channels connected to the oil supply becomes particularly simple when, according to the invention, the oil supply in the guide shoe is connected to the oil channel in the crosspiece which feeds oil to the guide surfaces of the guide shoe against the guide planes.
Placeringen af olietilgangen i guideskoene åbner i henhold til opfindelsen tillige mulighed for, at krydspinden er en udelt aksel, der forbinder krydshovedets to guidesko.According to the invention, the location of the oil supply in the guide shoes also opens up the possibility that the crosspiece is an indented shaft connecting the two guide heads of the crosshead.
30 Ved denne udformning kan såvel krydspinden som plejstangsøjet gøres lettere, hvorved der spares vægt i de reciproce-rende dele.In this embodiment, both the cross-stick and the grooming eye can be made easier, thereby saving weight in the reciprocating parts.
En forenkling af fremstillingen og monteringen af krydspinden opnås ifølge opfindelsen ved, at krydspinden har 35 samme diameter over hele sin længde.A simplification of the manufacture and mounting of the peg is achieved according to the invention in that the peg has the same diameter over its entire length.
Det foretrækkes ifølge opfindelsen af hensyn til opnåelse af fuldstændig balance i krydspinden, så vinkeldrejninger under stempeltrækning undgås, at krydspinden er i det 5 DK 173468 B1 væsentlige symmetrisk såvel i det ydre som i arrangementet af oliekanaler omkring et parallelt med motorens længdeakse forløbende plan.It is preferred according to the invention for the purpose of obtaining complete balance in the pivot pin, so that angular pivots during piston pulling prevent the pivot pin being substantially symmetrical in the outer as well as in the arrangement of oil channels about a plane parallel to the longitudinal axis of the motor.
I en foretrukken udføreIsesform har krydspinden samme 5 diameter over hele sin længde, dvs. også i de endeafsnit, der bærer guideskoene. Derved forenkles fremstillingen af krydspinden.In a preferred embodiment, the crosspiece has the same diameter over its entire length, ie. also in the end sections that carry the guide shoes. This simplifies the manufacture of the peg.
I henhold til en særlig udformning er krydspinden i det mindste ved dens ene ende lejret i en gennemgående 10 boring i den tilsvarende guidesko med mindst samme diameter som krydspinden mellem guideskoene.According to a particular embodiment, at least at one end of it the cross-stick is mounted in a through bore in the corresponding guide shoe of at least the same diameter as the cross-stick between the guide shoes.
Ved denne udformning kan montering og demontering af krydspinden ske ved indsætning eller udtrækning gennem boringen i den ene af guideskoene. Derfor må boringen have 15 mindst samme diameter - f.eks. befinde sig i et tilgrænsende toleranceområde - som krydspindafsnittet mellem guideskoene, medens forbindelsen til den anden guidesko kan udføres med samme eller mindre diameter eller eventuelt på helt anden måde som f.eks. en boltesamling.In this design, mounting and disassembly of the peg can be done by insertion or extraction through the bore in one of the guide shoes. Therefore, the bore must have at least 15 the same diameter - e.g. are in an adjacent tolerance range - such as the cross-section of the guide shoes, while the connection to the other guide shoe can be made with the same or smaller diameter or possibly in a completely different way, such as for example. a bolt assembly.
20 Som et eksempel på størrelsen af en totakts krydsho- vedmotor, hvori den foreliggende fordelagtige udformning af krydshovedet med tilhørende guidesko er særlig anvendelig, kan nævnes, at motoren kan have en ydelse per cylinder beliggende i intervallet fra 350 til 5800 kW. Cylinderborin-25 gerne i disse motorer kan ligge i intervallet fra 250 til 1000 mm, og slaglængderne kan ligge i intervallet fra 980 til 2400 mm.As an example of the size of a two-stroke crosshead motor in which the present advantageous design of the crosshead with accompanying guide shoes is particularly useful, it can be mentioned that the motor may have a performance per cylinder ranging from 350 to 5800 kW. Cylinder boron 25s in these engines can range from 250 to 1000 mm, and the stroke lengths can range from 980 to 2400 mm.
Den meget store cylinderydelse på eksempelvis 4000 kW medfører store tændkræfter, som via krydshovedet skal over-30 føres til plej Istangen. Dette frembringer meget store påvirkninger på krydshovedets lejeflade. Det er derfor af væsentlig betydning, at opfindelsen giver mulighed for i videst muligt omfang at udnytte den beskedne plads omkring krydshovedet til effektivt lejeareal i krydshovedlejets un-3 5 derpart.The very large cylinder output of, for example, 4000 kW results in great ignition forces which must be transferred to the Istangen via the crosshead. This produces very large influences on the bearing head's bearing surface. It is therefore essential that the invention allows to utilize, as far as possible, the modest space around the crosshead for effective bearing area in the un-35 part of the crosshead bed.
Opfindelsen skal i det følgende beskrives nærmere under henvisning til tegningen, på hvilken:The invention will now be described in more detail with reference to the drawing, in which:
Fig. l viser et krydshoved med olietilførsel ved DK 173468 Bl 6 hjælp af et teleskoprør og af kendt konstruktion set ovenfra, fig. 2 viser et krydshoved i en forbrændingsmotor ifølge opfindelsen, 5 fig. 3 viser en detalje af et krydshoved på en motor ifølge opfindelsen i perspektiv, fig. 4 viser en guidesko til en motor ifølge opfindelsen set ovenfra, og fig. 5 viser guideskoen ifølge fig. 4 set fra siden 10 og med et udsnit i forstørret målestok.FIG. 1 shows a crosshead with oil supply at DK 173468 B1 6 using a telescopic tube and of known construction from above; FIG. 2 shows a crosshead in an internal combustion engine according to the invention; FIG. 3 is a perspective view of a crosshead of a motor according to the invention; FIG. 4 is a top view of a guide shoe for a motor according to the invention; and FIG. 5 shows the guide shoe of FIG. 4 as seen from page 10 and with an enlarged scale.
I den følgende beskrivelse anvendes samme henvisningsbetegnelser for analoge dele på de forskellige afbildninger.In the following description, the same reference numerals for analog parts are used on the different images.
Ved forbrændingsmotorer af krydshovedtypen tilføres 15 der af hensyn til smøring af krydshovedet, guideskoene, plejIstangslejet og til forsyning med køleolie til stempeltoppen en oliestrøm til hvert krydshoved. Ved en kendt motortype sker tilførslen gennem et teleskoprør, hvis faste del er placeret langs ydersiden af cylinderforingen og pa-20 rallelt med stempelstangen. Et kendt arrangement er vist på fig. 1, der viser et krydshoved med guidesko set ovenfra, idet styreplanerne er set i snit. på figuren ses plej Istangens øverste del med plej Istangsøjets overfald 1. I plejl-stangsøjet er krydspinden 2 lejret, idet de to ender af den-25 ne er indsat i hver sin guidesko 3, 4. Guideskoene 3, 4 er bevægelige i lodret retning, idet de føres mellem styreplaner 5,6,7,8, der er fæstnet til de afstivende tværvægge 9,10, der støder op mod den pågældende plej Istang. På figuren er med en stiplet linie antydet den ydre omkreds af cy-30 linderforingen. Denne linie sætter en grænse for, hvor nær krydshovedet teleskoprøret kan placeres. Ved den kendte konstruktion fastboltes der til en plan udfræsning i krydspinden 2 en konsol 11, der forlænges med et støbt rørknæ 12, hvortil teleskoprøret 13 boltes ved hjælp af en flange 14.For intersection engines of the crosshead type, 15 for the purpose of lubricating the crosshead, guide shoes, nursing rod bearing and for supplying cooling oil to the piston top, an oil flow is applied to each crosshead. In a known motor type, the supply is through a telescopic tube, the fixed part of which is located along the outside of the cylinder liner and parallel to the piston rod. A known arrangement is shown in FIG. 1, showing a crosshead with guide shoes viewed from above, the control plans being sectioned. The figure shows the upper part of the Istang with the plunger of the Istang eye assault 1. In the pole rod eye the crosspiece 2 is mounted, the two ends of these 25 being inserted into each guide shoe 3, 4. The guide shoes 3, 4 are movable in a vertical direction. as they are passed between control boards 5,6,7,8, which are attached to the stiffening cross walls 9,10 adjacent to the care Istang. In the figure, a dashed line indicates the outer circumference of the cylinder liner. This line limits how close the crosshead can be placed to the telescopic tube. In the known construction, a bracket 11 is bolted to a flat milling in the crosspiece 2, which is extended by a molded pipe knee 12, to which the telescopic tube 13 is bolted by means of a flange 14.
35 På tilsvarende måde boltes der ved den modsatte ende af krydspinden en konsol 15, på hvilken olieafgangsrøret 16 monteres. Krydspinden 2 har en opad vendende plan flade 17, der er indrettet til påboltning af stempelstangen, og som 7 DK 173468 B1 befinder sig under en åbning 18 i plej Istangsøjets overfald 1.Similarly, a bracket 15 is bolted at the opposite end of the crosspiece to which the oil discharge tube 16 is mounted. The crosspiece 2 has an upwardly facing planar surface 17 which is adapted for bolting the piston rod and which 7 is located under an opening 18 in the groove of the Istang's eye 1.
Den kendte konstruktion har en række ulemper, der hidrører fra konsollerne, som er monteret på krydspinden.The known construction has a number of disadvantages arising from the brackets which are mounted on the peg.
5 For det første optager konsollerne plads mellem guideskoene 3, 4, hvorved lejelængden i plejIstangsøjet reduceres. For at opnå tilstrækkelig lejeflade må krydspinden derfor forsynes med en forholdsvis stor diameter, hvilket forøger konstruktionens vægt. For det andet repræsenterer konsollerne 10 en ubalance, som ved stempeltrækning kan få krydspinden til at dreje sig, hvilket vanskeliggør monteringen af stempelstangen, når stemplet atter bringes på plads. De udragende konsoller og rørknæ er desuden udsat for dynamiske kraftpåvirkninger og der er derfor risiko for brud på især rørknæ-15 et.5 First, the brackets take up space between the guide shoes 3, 4, thereby reducing the bearing length in the nursing rod eye. Therefore, in order to obtain sufficient bearing surface, the cross-stick must be provided with a relatively large diameter, which increases the weight of the structure. Secondly, the brackets 10 represent an imbalance which can cause the pivot pin to rotate during piston pulling, which makes it difficult to mount the piston rod when the piston is re-inserted. The protruding brackets and tubular knees are also subject to dynamic force effects and there is therefore a risk of fracture of the tubular knee in particular.
Fig. 2 viser en tilsvarende afbildning af plejl-stangsøjet på en forbrændingsmotor ifølge opfindelsen. Ved den ny konstruktion udnyttes det forhold, at styreplanerne 5,6,7,8 for guideskoene 3,4 udgør afstivende elementer i mo-20 torstativets tværgående afstivninger 9, 10. Som følge heraf er de placeret roed forholdsvis stor afstand, og tilsvarende har guideskoene forholdvis stor bredde. På figuren er der på lignende måde som på fig. 1 med stiplet linie indtegnet en cirkel, der repræsenterer ydersiden af cylinderforingen. Det 25 ses, at en del af guideskoene er beliggende uden for denne cirkel. Ifølge opfindelsen placeres teleskoprøret 13 på en del af guideskoen, der er beliggende uden for den indtegnede cirkel. Guideskoen udstyres med en olietilgang, der via kanaler i eller langs skoens krop fører olien frem til lejrin-30 gen for krydspinden. Gennem en tværgående boring i krydspinden føres olien videre til den normalt langs krydspindens akse forløbende hovedfordelingskanal, der har afgreninger til de forskellige lejeflader og til stempelkølingen. Oliefordelingskanalerne i krydspinden følger det traditionelle 35 mønster, bortset fra at de tværgående boringer, der udmundede ved udfræsningerne til konsollerne er udeladt, olietilførslen til hovedkanalen sker via den kanal, som tidligere kun leverede olie til guideplanerne, blot har disse kanaler 8 DK 173468 B1 et større tværsnit. Olieafgangen 16 kan tilsvarende placeres på den modsatte guidesko, idet det rør, som fører returolien fra stempelkølingen over i en opsamlingsindretning, f.eks. et opslidset opsamlingsrør, fastboltes direkte på oversiden 5 af guideskoen.FIG. 2 shows a corresponding view of the connecting rod eye on an internal combustion engine according to the invention. The new construction takes advantage of the fact that the guide planes 5,6,7,8 for the guide shoes 3,4 constitute stiffening elements in the transverse stiffeners 9, 10 of the motor frame. the guide shoes relatively wide. In the figure, similarly to FIG. 1 in dotted line, drawn a circle representing the outside of the cylinder liner. It will be seen that some of the guide shoes are located outside this circle. According to the invention, the telescopic tube 13 is placed on a portion of the guide shoe which is located outside the drawn circle. The guide shoe is provided with an oil supply which, via ducts in or along the body of the shoe, advances the oil to the camp for the peg. Through a transverse bore in the peg, the oil is passed to the normally distributed main distribution channel along the axis of the peg, which has branches to the different bearing surfaces and to the piston cooling. The oil distribution channels in the peg follow the traditional pattern, except that the transverse bores that result in the milling to the brackets are omitted, the oil supply to the main channel is via the channel which previously only supplied oil to the guide planes, only these channels 8 DK 173468 B1 larger cross section. The oil outlet 16 may similarly be placed on the opposite guide shoe, the pipe passing the return oil from the piston cooling into a collection device, e.g. a slotted collection tube, bolted directly to the top 5 of the guide shoe.
Placeringen af teleskoprøret på guideskoen medfører, at plejstangsøjet 1 kan udnytte den fulde bredde mellem guideskoene 3,4. Det bliver derved muligt at opnå tilstrækkeligt lejeareal med en tyndere og dermed lettere krydspind.The location of the telescopic tube on the guide shoe means that the nursing rod eye 1 can utilize the full width between the guide shoes 3,4. This makes it possible to obtain sufficient bearing area with a thinner and thus lighter crosspiece.
10 På grund af den tyndere krydspind bliver også plejlstangs-øjet slankere, hvorved der frilægges en del 'a' af guideskoen, hvor olietilgangen kan placeres. Den foretrukne placering er imidlertid direkte på oversiden af guideskoen som vist på fig. 2. Monteringen kan finde sted inden for guide-15 skoens normale kontur, eller guideskoens øvre flange kan som vist være udvidet ind mod afstivningen 10, hvorved olietilgangen kan placeres langs den ind mod afstivningen vendende side af guideskoens krop 20 (fig. 3). Placeringen af teleskoprøret 13 op mod afstivningen 10 giver endvidere de for-20 del, at teleskoprøret ikke kommer i vejen ved vedligeholdelse af krydshoved og stempel, og demontering af teleskoprøret kan derved undgås ved stempeltrækning. Ved udformningen ifølge opfindelsen elimineres desuden enhver ubalance i krydspinden 2, der kan udformes som en gennemgående, ubrudt 25 aksel med ensartet diameter over hele sin længde. Der er også mulighed for på en af sidefladerne af guideskoen at montere en konsol, der fastboltes ud for olietilgangen og til hvilken teleskoprøret fastgøres. Ved den indirekte fastgørelse af teleskoprøret kan der opnås visse lettelser ved af-30 og påmontering af teleskoprøret f.eks. ved vedligeholdelse af pakdåsen nederst på teleskoprørets faste del.10 Due to the thinner cross-stick, the connecting rod eye also becomes slimmer, thereby exposing a portion 'a' of the guide shoe where the oil supply can be placed. However, the preferred location is directly on the upper side of the guide shoe as shown in FIG. 2. Mounting may take place within the normal contour of the guide shoe, or the upper flange of the guide shoe may be extended toward the stiffener 10, whereby the oil supply may be located along the side facing the stiffener body 20 of the guide shoe (Fig. 3). The positioning of the telescopic tube 13 against the stiffener 10 furthermore provides the advantage that the telescopic tube does not get in the way of maintenance of the crosshead and piston, and disassembly of the telescopic tube can thereby be avoided by piston pulling. In addition, in the design according to the invention, any imbalance in the crosspiece 2 which can be designed as a continuous unbroken shaft of uniform diameter over its entire length is eliminated. It is also possible to mount on one of the side surfaces of the guide shoe a bracket which is bolted to the oil inlet and to which the telescopic tube is attached. By the indirect attachment of the telescopic tube, certain reliefs can be obtained by removing and attaching the telescopic tube e.g. by maintaining the packing box at the bottom of the fixed part of the telescopic tube.
Den som en ubrudt, gennemgående aksel udformede krydspind 2 er et vigtigt aspekt ifølge opfindelsen. Udformningen, der fremgår af fig. 2, er en konsekvens af, at 35 plejlstangsøjet kan optage hele bredden mellem guideskoene, og at disse på grund af den forholdsvis store afstand mellem styreplanerne kan optage krydspindens fulde diameter. Konstruktionen er anvendelig, når disse betingelse er til stede 9 DK 173468 B1 og er derfor anvendelig i forbindelse med andre udformninger af olietilførslen end teleskoprøret, blot tilførslen ikke gør brug af konsoller eller lignende, som fastgøres til krydspinden i området mellem plejIstangsøjet og guideskoene.The pivot 2 formed as an unbroken through shaft is an important aspect of the invention. The design shown in FIG. 2 is a consequence of the fact that the connecting rod eye can take up the entire width between the guide shoes and that, because of the relatively large distance between the guide planes, it can take up the full diameter of the peg. The construction is applicable when these conditions are present and is therefore applicable in connection with other designs of the oil supply other than the telescopic tube, provided that the supply does not use brackets or the like, which are attached to the cross pin in the area between the nursing rod eye and the guide shoes.
5 Samling og adskillelse af krydshovedet finder sted ved ak-sial forskydning af krydspinden, idet denne under en del af operationen skal kunne føres delvis gennem en åbning i den tværgående afstivning af motorstativet.5 Assembly and separation of the crosshead takes place by axial displacement of the crosshead, during which part of the operation it must be possible to pass partially through an opening in the transverse stiffening of the motor stand.
Fig. 3 illustrerer det forenklede arrangement ifølge 10 opfindelsen af krydshovedet og teleskoprøret. Figuren viser i perspektiv en guidesko 4 med en central boring gennem hvilken den ene ende af krydspinden 2 er indsat. Figuren viser desuden en del af det ene styreplan 8, medens det andet er udeladt, så guideskoens glideflade kan ses. Teleskoprøret 15 er ved hjælp af en flange 14 boltet direkte til guideskoens øvre flange 21. Teleskoprøret 13 er ført gennem en pakdåse 22 ind i teleskoprørets faste del 23, der er monteret i forbrændingsmotorens skylleluftkammer, der nedadtil er aflukket ved hjælp af en i det væsentlige vandret forløbende væg 24, 20 hvoraf der kun er vist et lille udsnit. På figuren er tillige vist en del af stempelstangen 25 og en del af plejl-stangen 26.FIG. 3 illustrates the simplified arrangement according to the invention of the crosshead and the telescopic tube. The figure shows in perspective a guide shoe 4 with a central bore through which one end of the peg 2 is inserted. The figure also shows part of one control plane 8, while the other is omitted, so that the slide of the guide shoe can be seen. The telescopic tube 15 is bolted directly to the upper flange 21 of the guide shoe by means of a flange 14. The telescopic tube 13 is passed through a packing box 22 into the fixed part 23 of the telescopic tube, which is mounted in the combustion engine's purge air chamber, which is closed downwards by a substantially horizontally extending wall 24, 20 of which only a small section is shown. Also shown in the figure is a portion of the piston rod 25 and a portion of the connecting rod 26.
Fig. 4 og 5 viser en særlig udformning, af guideskoen 4, der muliggør en montering af teleskoprøret 13 fra guide-25 skoens underside. Ved den viste udformning forøges afstanden mellem pakdåsen i rørets faste del og monteringsstedet i guideskoen. Teleskoprøret føres gennem et par huller 27,28 i guideskoens flanger, hvilke huller har en diameter, som er noget større end rørdiameteren. Den nederste flange har en 30 fortykkelse 29, i hvilken der er en boring med et afsnit 30, som svarer til telekoprørdiameteren og et afsnit 31 nedenfor med større diameter. Teleskoprøret er forsynet med en flange 32, der støtter mod det bryst, som dannes ved overgangen mellem den større og mindre diameter af hullet. I boringen 35 31 er der indsat en prop 33, der har en langsgående og en tværgående boring og en rundtgående not, som tilsammen kan overføre den gennem røret strømmende olie til en i guideskoen placeret oliekanal 34, der fører olien frem til de i 10 DK 173468 B1 krydspinden placerede oliekanaler. Proppen 33 kan holdes på plads ved hjælp af en påboltet plade 35. Ved det viste arrangement lettes montagen af teleskoprøret samtidig med at der opnås en konstruktion, der er tolerant overfor opret-5 ningsunøjagtigheder og slør i guideskoen.FIG. 4 and 5 show a special configuration, of the guide shoe 4, which enables the telescopic tube 13 to be mounted from the underside of the guide 25 shoe. In the embodiment shown, the distance between the packing box in the fixed part of the pipe and the mounting point in the guide shoe is increased. The telescopic tube is passed through a pair of holes 27,28 in the flange of the guide shoe, which holes have a diameter somewhat larger than the tube diameter. The lower flange has a 30 thickening 29, in which there is a bore having a section 30 corresponding to the telescope tube diameter and a section 31 below with a larger diameter. The telescopic tube is provided with a flange 32 which supports against the chest formed at the transition between the larger and smaller diameter of the hole. A bore 33 is provided in the bore 35 31, which has a longitudinal and a transverse bore and a circumferential groove, which together can transfer the oil flowing through the tube to an oil channel 34 located in the guide shoe which carries the oil to the 173468 B1 cross pin placed oil channels. The plug 33 can be held in place by means of a bolted-on plate 35. In the arrangement shown, the mounting of the telescopic tube is facilitated while at the same time obtaining a construction which is tolerant of erratic inaccuracies and blurring in the guide shoe.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK58296A DK173468B1 (en) | 1996-05-15 | 1996-05-15 | Internal combustion engine of the crosshead type having oil supply to the crosshead |
| JP12404097A JP3421216B2 (en) | 1996-05-15 | 1997-05-14 | Crosshead internal combustion engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK58296 | 1996-05-15 | ||
| DK58296A DK173468B1 (en) | 1996-05-15 | 1996-05-15 | Internal combustion engine of the crosshead type having oil supply to the crosshead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK58296A DK58296A (en) | 1997-11-16 |
| DK173468B1 true DK173468B1 (en) | 2000-12-04 |
Family
ID=8095195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK58296A DK173468B1 (en) | 1996-05-15 | 1996-05-15 | Internal combustion engine of the crosshead type having oil supply to the crosshead |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3421216B2 (en) |
| DK (1) | DK173468B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1881255A2 (en) * | 2006-07-18 | 2008-01-23 | Wärtsilä Schweiz AG | Hub holder for the shaft of a reciprocating combustion machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100656834B1 (en) | 2005-07-13 | 2006-12-13 | 엠에이엔 비앤드떠블유 디젤 에이/에스 | A two-stroke internal combustion engine of the crosshead type having an oil pan mounted below a bed plate |
| CN104265398B (en) * | 2014-07-24 | 2016-07-13 | 江苏科技大学 | Diesel engine cross lubrication fueller |
-
1996
- 1996-05-15 DK DK58296A patent/DK173468B1/en not_active IP Right Cessation
-
1997
- 1997-05-14 JP JP12404097A patent/JP3421216B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1881255A2 (en) * | 2006-07-18 | 2008-01-23 | Wärtsilä Schweiz AG | Hub holder for the shaft of a reciprocating combustion machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1077819A (en) | 1998-03-24 |
| JP3421216B2 (en) | 2003-06-30 |
| DK58296A (en) | 1997-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PUP | Patent expired |
Expiry date: 20160515 |