DK160895B - CRANK SHAFT FOR STAMP COMBUSTION ENGINE - Google Patents

CRANK SHAFT FOR STAMP COMBUSTION ENGINE Download PDF

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Publication number
DK160895B
DK160895B DK121186A DK121186A DK160895B DK 160895 B DK160895 B DK 160895B DK 121186 A DK121186 A DK 121186A DK 121186 A DK121186 A DK 121186A DK 160895 B DK160895 B DK 160895B
Authority
DK
Denmark
Prior art keywords
crankshaft
combustion engine
crank
ledge
stamp
Prior art date
Application number
DK121186A
Other languages
Danish (da)
Other versions
DK121186D0 (en
DK121186A (en
Inventor
Kaspar Hans Aeberli
Original Assignee
Sulzer Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sulzer Ag filed Critical Sulzer Ag
Publication of DK121186D0 publication Critical patent/DK121186D0/en
Publication of DK121186A publication Critical patent/DK121186A/en
Publication of DK160895B publication Critical patent/DK160895B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00Shafts; Axles; Cranks; Eccentrics
    • F16C3/04Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06Crankshafts

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Compressor (AREA)

Description

1 DK 160895 B1 DK 160895 B

Opfindelsen vedrører en krumtapaksel til en stempelforbrændingsmotor med parvis anbragte krumtapvanger med hulkeler ved 5 plejlstangssølen og med en afsats på hovedlejesiden på mindst en krumtapvange.BACKGROUND OF THE INVENTION The invention relates to a crankshaft for a piston-combustion engine with paired crankshafts with hollow holes at the 5 pole bar and having a head bearing side of at least one crankshaft.

Ved hidtidige krumtapaksler er krumtapvangerne forholdsvis brede i området ved plejlstangsølen. Det har den ulempe, at 10 krumtapslagets frie, roterende massekraft er forholdsvis stor. Forstærkende afsatse på krumtapvangerne betinger på den anden side en uønsket forøgelse af cylinderafstandene og dermed af maskinens aksiale byggelængde. En sådan krumtapaksel med brede krumtapvanger kendes for eksempel fra DD patentskrift nr.In the case of previous crankshafts, the crankshafts are relatively wide in the region of the connecting rod beer. It has the disadvantage that the free, rotating mass force of the crankshaft is relatively large. Reinforcing deposits on the crankshafts, on the other hand, require an undesirable increase in the cylinder spacings and thus of the axial length of the machine. Such a crankshaft with wide cranks is known, for example, from DD patent specification no.

15 42 896, som til reduktion af spændingskoncentrationer har spe cielle udsparinger i hulkelagtig udformning på siden mod plejlstangsølen og krumtapsølen, hvorved der på krumtapvangen ved siden af denne udsparing træder en forblivende afsats frem.15 42 896, which, for reducing stress concentrations, has special recesses in hollow-like design on the side against the connecting rod and crankcase, whereby a residual ledge appears on the crankshaft next to this recess.

2020

Det er nu opfindelsens opgave at forbedre den i indledningen nævnte krumtap således, at ved ensforblivende aksial bygge-længde og uformindsket styrke muliggøres en formindskelse af de roterende massers inertimoment og en forbedring af stempel-25 forbrændingsmotorens rolige gang. Denne opgave løses ifølge opfindelsen derved, at afsatsen ligger aksialt over for hulkelen, at krumtapvangen set fra siden er udformet, så den spidser til hen imod plejlstangssølen, og at den aksiale afstand mellem nabokrumtapvanger på to krumtapforkrøbninger i 30 afsatsenes område er mindre end hovedlejebredden.It is the object of the invention to improve the crankshaft mentioned in the preamble so that, with uniform axial build length and diminished strength, a reduction of the inertia of the rotary masses is possible and an improvement in the quiet running of the piston-combustion engine. This task is solved according to the invention in that the ledge is axially facing the hollow, the crank is viewed from the side so that it points towards the connecting rod sill and that the axial distance between neighboring crankshaft on two crank cranks in the area of the ledge is less than the main bearing width.

Ved tilspidsningen har krumtappen set fra siden en væsentligt mindre bredde end hidtil. Herved lader de frie massekræfter ved rotationen sig formindske væsentligt. Samtidig opnås ved 35 den aksialt modsat liggende anbringelse af afsats og hulkel enAt the taper, the crank has a much smaller width from the side than before. In this way, the free mass forces at rotation can be greatly reduced. At the same time, by the axially opposite arrangement of ledge and hollow one is obtained

2 DK 160895 B2 DK 160895 B

uformindsket styrke af krumtappen. Spændingen i krumtappens hulkel holdes ensblivende eller formindskes endog. Og ved formindskelsen af afstanden mellem nabokrumtapvanger i afsatsenes område lader den tilstræbte, mindst mulige cylinderafstand og 5 dermed den aksiale byggelængde sig fastholde, og den ellers af afsatsene betingede aksiale forlængelse lader sig kompensere. Den nævnte opgave kan altså kun løses med opfindelsens kombination af alle de nævnte kendetegn.undiminished strength of the crank. The tension in the crankcase cavity is kept constant or even diminished. And by reducing the distance between neighboring crankshafts in the area of the ledges, the desired minimum cylinder distance and thus the axial construction length is maintained, and the otherwise axial extension conditional on the ledges can be compensated. Thus, the said task can only be solved by the combination of the invention with all the said features.

10 Den nærmere forklaring på opfindelsen sker ved hjælp af udførelseseksempler i forbindelse med vedlagte tegning, hvor: fig.la viser et billede af en krumtapaksel ifølge nuværende teknik, 15 fig. Ib viser et billede set fra siden svarende til pil Ib i fig. la, fig. 2a viser et udførelseseksempel for en krumtapaksel 20 ifølge opfindelsen, fig. 2b viser et tilsvarende billede set fra siden svarende til pil Ilb i fig. 2a, 25 fig. 3 viser et billede af et andet udførelseseksempel af en krumtapaksel ifølge opfindelsen, og fig. 4 viser et perspektivbillede af en variant ifølge fig.The further explanation of the invention is illustrated by way of example with reference to the accompanying drawings, in which: - Fig. 1a shows an image of a crankshaft according to the present art; Ib shows a side view similar to arrow Ib in FIG. 1a, FIG. Fig. 2a shows an exemplary embodiment of a crankshaft 20 according to the invention; 2b shows a similar side view similar to arrow Ilb in FIG. 2a, FIG. 3 shows a view of another embodiment of a crankshaft according to the invention, and fig. 4 is a perspective view of a variant of FIG.

3 303 30

En krumtapaksel 10 (fig. la, lb) svarende til teknikkens nuværende stade har en plejlstangssøle 12, krumtapvanger 14, 16 og hovedlejesøler 18, 20, hvilke er lejret på sædvanlig måde i ikke viste hovedlejer. Hulkelerne på plejlstangssølen 12 er 35 betegnet med 22, 24. Ved krumtappen 26 ifølge opfindelsen (2a,A crankshaft 10 (Figs. 1a, 1b) corresponding to the present state of the art has a connecting rod column 12, crankcase 14, 16 and main bearing columns 18, 20, which are conventionally mounted in main bearings not shown. The hollow shells on the connecting rod spool 12 are denoted by 22, 24. At the crank 26 according to the invention (2a,

3 DK 160895B3 DK 160895B

2b) har krumtapvangerne 32, 34 hver en afsats 28, 30 på hoved-lejesiden, og krumtapvangerne 32, 34 er udformet, så de tilspidser sig henimod plejlstangssølen. Som det fremgår af fig. 2a, befinder den pågældende afsats 28, 30 sig omtrent overfor 5 hulkelen 22 henholdsvis 24, hvorved spændingen i hulkelen bliver holdt på det samme eller bliver reduceret.2b) the cranks 32, 34 each have a ledge 28, 30 on the main bearing side, and the cranks 32, 34 are formed so that they tap into the connecting rod spool. As shown in FIG. 2a, the respective ledge 28, 30 is approximately opposite to the hollow 22 and 24 respectively, whereby the voltage in the hollow is kept at the same or reduced.

Den forstærkende virkning af afsatsen 28, 30 på stedet med den maksimale belastning muliggør en reduceret aksial tykkelse af 10 krumtapvangerne 32, 34. Sammen med tilspidsningen sker der dermed en reduktion af massekræfterne ved rotation. Ved den kendte krumtap ifølge DD patentskrift nr. 42 896 findes der ganske vist en afsats, som dog netop ikke ligger aksialt over for hulkelen, og derfor heller ikke kan give den nødvendige 15 forstærkning der.The reinforcing effect of the landing 28, 30 at the site with the maximum load allows a reduced axial thickness of the crankshaft 32, 34. Together with the taper, there is thus a reduction of the mass forces by rotation. By the known crank according to DD patent specification 42 896 there is admittedly a ledge which, however, does not precisely lie axially to the hollow, and therefore can not provide the necessary reinforcement there.

Ved udførelseseksemplet ifølge fig. 3 er krumtapvangerne 36, 38 knækket eller forkrøbbet mod hinanden. Derved er afstanden A mellem krumtapvangen 38 og nabokrumtapvangen 39 i området 20 ved afsatsene 30, 41 mindre end hovediejebredden B. Forskellen mellem afstand A og hovedlejebredde B svarer derved til højden af de to afsatse 30, 41. Som det fremgår af fig. 3, lader den normale, af afsatsene betingede cylinderafstand (Lnora) sig formindske til en værdi (Lred), så at motor længden forkortes 25 tilsvarende.In the embodiment of FIG. 3, the crankshafts 36, 38 are broken or crimped against each other. Thus, the distance A between the crank 38 and the neighbor crank 39 in the area 20 at the ledges 30, 41 is smaller than the main bearing width B. The difference between distance A and the main bearing width B corresponds to the height of the two ledges 30, 41. As can be seen in FIG. 3, the normal cylinder spacing (Lnora) can be reduced to a value (Lred) so that the motor length is shortened accordingly.

I den perspektiviske fremstilling i fig. 4 ses alle kendetegnene for en krumtap 40 ifølge opfindelsen, det vil sige, krumtapvangerne 42, 44 med afsatsene 28, 30 er udformet tilspid-30 sende hen imod krumtappen 12 og knækket imod hinanden, hvorved hulkelerne 24 (22 er ikke synlig) ligger aksialt over for afsatsene 30 og 28. Herved opnås en optimal kombination af formindsket inertimoment for de roterende masser, roligere gang, gunstige spændingsforhold og pladsbesparende byggemåde. Dette 35 er frem for alt af betydning ved maskiner med stor slaglængdeIn the perspective view of FIG. 4, all the characteristics of a crank 40 according to the invention are seen, that is, the crankshaft 42, 44 with the ledges 28, 30 are formed tapered towards the crank 12 and broken against one another, whereby the hollow beads 24 (22 are not visible) lie axially opposite the ledges 30 and 28. This results in an optimal combination of reduced moment of inertia for the rotating masses, quieter walking, favorable voltage conditions and space-saving construction. This 35 is especially important for large stroke machines

4 DK 160895 B4 DK 160895 B

med overhængende krumtapslag og store inertimomenter.with imminent crankshaft and large moments of inertia.

Claims (1)

DK 160895B Krumtapaksel til en stempelforbrændingsmotor med parvis anbragte krumtapvanger, med hulkeler ved plej 1stangssølerne og 5 med en afsats på hovedlejesiden på mindst en krumtapvange, kendetegnet ved, at afsatsen (28, 30) ligger aksi-alt over for hulkelen (22, 24), at krumtapvangen (32, 34) set fra siden er udformet tilspidsende sig hen imod plejlstangssø-len (12), og at den aksiale afstand (A) mellem nabokrumtapvan-10 ger (38, 39) på to krumtapslag i området ved afsatsene (30, 41) er mindre end hovedlejebredden (B).DK 160895B Crankshaft for a piston-combustion engine with paired crankshaft, with hollows at the groove columns and 5 with a ledge on the main bearing side of at least one crank, characterized in that the ledge (28, 30) lies axially opposite to the hollow (22, 24). that the crankshaft (32, 34) is laterally formed tapering towards the connecting rod column (12) and that the axial distance (A) between neighbor crankshaft (38, 39) of two crankshaft in the region of the ledges ( 30, 41) is smaller than the main bearing width (B).
DK121186A 1985-04-11 1986-03-14 CRANK SHAFT FOR STAMP COMBUSTION ENGINE DK160895B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH155085A CH665888A5 (en) 1985-04-11 1985-04-11 CRANKSHAFT FOR A PISTON INTERNAL COMBUSTION ENGINE.
CH155085 1985-04-11

Publications (3)

Publication Number Publication Date
DK121186D0 DK121186D0 (en) 1986-03-14
DK121186A DK121186A (en) 1986-10-12
DK160895B true DK160895B (en) 1991-04-29

Family

ID=4213031

Family Applications (1)

Application Number Title Priority Date Filing Date
DK121186A DK160895B (en) 1985-04-11 1986-03-14 CRANK SHAFT FOR STAMP COMBUSTION ENGINE

Country Status (7)

Country Link
EP (1) EP0199907B1 (en)
JP (1) JPS61241514A (en)
CN (1) CN1004507B (en)
CH (1) CH665888A5 (en)
DE (1) DE3519985A1 (en)
DK (1) DK160895B (en)
NO (1) NO164369C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913088A1 (en) * 1988-05-04 1989-11-23 Volkswagen Ag Crankshaft
FR2799244B1 (en) * 1999-10-01 2001-11-09 Renault CRANKSHAFT OF MULTICYLI INTERNAL COMBUSTION ENGINE
CN103573834B (en) * 2012-07-20 2016-05-18 北京精密机电控制设备研究所 The transmission joint of a kind of servo control mechanism and engine
JP6244690B2 (en) * 2013-06-27 2017-12-13 新日鐵住金株式会社 Reciprocating engine crankshaft
CN106574650B (en) * 2014-08-07 2019-09-24 日本制铁株式会社 The crankshaft of reciprocating engine
JP6398453B2 (en) * 2014-08-12 2018-10-03 新日鐵住金株式会社 Reciprocating engine crankshaft

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB113561A (en) *
FR379813A (en) * 1907-07-11 1907-11-20 Emile Cambier Crankshaft for multi-cylinder automotive car engines
FR514635A (en) * 1917-06-21 1921-03-15 Alois Riedler Bent shaft
FR584262A (en) * 1923-10-12 1925-02-03 Emile Salmson Fils De Multi-piece crankshaft assembly device
GB583560A (en) * 1944-10-31 1946-12-20 Doxford William & Sons Ltd Improvements in crankshafts and other machine elements
US2741828A (en) * 1951-08-31 1956-04-17 Isthmian Metals Inc Composite metal structure
DD42896A1 (en) * 1964-11-19 1965-11-05 Fritz Willner Crankshaft, in particular for internal combustion engines
GB1090446A (en) * 1965-05-11 1967-11-08 Schmidt Gmbh Karl Improvements in or relating to crankshafts
JPS5254645Y2 (en) * 1972-10-23 1977-12-10
CH567194A5 (en) * 1973-07-30 1975-09-30 Sulzer Ag Crankshaft for internal combustion piston engines - crank sections are eccentrically mounted force fit on shaft to permit stroke setting variation
JPS5221385U (en) * 1975-08-01 1977-02-15
DK232682A (en) * 1982-05-24 1982-12-07 B & W Diesel As WELDING CRANK SHAFT FOR A MULTI-CYLINDERED Piston MACHINE AND PROCEDURE FOR INSTALLING THE CRANK SHAFT IN THE MACHINE BOTTOM

Also Published As

Publication number Publication date
CH665888A5 (en) 1988-06-15
NO164369C (en) 1990-09-26
EP0199907B1 (en) 1989-09-27
DE3519985C2 (en) 1989-07-27
NO861394L (en) 1986-10-13
JPS61241514A (en) 1986-10-27
DK121186D0 (en) 1986-03-14
JPH0434002B2 (en) 1992-06-04
DK121186A (en) 1986-10-12
NO164369B (en) 1990-06-18
DE3519985A1 (en) 1986-10-16
EP0199907A1 (en) 1986-11-05
CN86101857A (en) 1986-12-17
CN1004507B (en) 1989-06-14

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