DK147382B - RELATIONSHIP BETWEEN Piston rod and cross head loss in a stamping machine, namely a cross head diesel engine - Google Patents
RELATIONSHIP BETWEEN Piston rod and cross head loss in a stamping machine, namely a cross head diesel engine Download PDFInfo
- Publication number
- DK147382B DK147382B DK213178AA DK213178A DK147382B DK 147382 B DK147382 B DK 147382B DK 213178A A DK213178A A DK 213178AA DK 213178 A DK213178 A DK 213178A DK 147382 B DK147382 B DK 147382B
- Authority
- DK
- Denmark
- Prior art keywords
- piston rod
- cross head
- pin
- connection
- connecting bolt
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- F16C5/00—Crossheads; Constructions of connecting-rod heads or piston-rod connections rigid with crossheads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
147382 1 Opfindelsen angår en. forbindelse mellem, stempelstang og krydsbovedtap i en stempelmaskine, navnlig en krydshoved-dieselmotor og af den i krav £ls indledning angivne art.The invention relates to a. connection between, piston rod and crosshead pin in a piston machine, in particular a crosshead diesel engine and of the kind specified in the preamble of claim 1.
55
Forbindelsen mellem stempelstang og krydshovedtap er en stærkt påvirket del i en krydshoved-dieselmotor og må tilfredsstille strenge krav. Forbindelsen må på den ene side have tilstrækkelig styrke til at overbo føre gas- og massekræfter fra stempelstangen til krydshovedtappen, på den anden side er det til visse anvendelser, såsom Ro-Ro-skibe, d.v.s. skibe med gennemgående ladeplan, eller stationære anlæg tvingende nødvendigt at udforme systemet stempei-stempelstang 15 kort, for at højden af maskinrummet kan holdes lav.The connection between piston rod and crosshead pin is a highly affected part of a crosshead diesel engine and must satisfy stringent requirements. The connection, on the one hand, must have sufficient strength to superimpose gas and mass forces from the piston rod to the crosshead pin, on the other hand it is for certain applications such as Ro-Ro vessels, i.e. ships with continuous loading plane, or stationary systems, imperative to design the system piston rod 15 briefly in order to keep the height of the engine room low.
Den nævnte forbindelse fremstilles hyppigt ved hjælp af en som en forlængelse af stempelstangen udformet stempelstangtap, der passerer gennem en i krydshoved-20 tappens tværretning forløbende boring. Fastgørelsen af krydshovedtappen på stempelstangtappen bliver så sikret med en skruemøtrik, der er påskruet på den frie ende af stempelstangtappen. En sådan forbindelse er f.eks. omtalt i beskrivelsen til schweizisk 25 patent nr. 540 442.Said connection is frequently made by means of a piston rod pin formed as an extension of the piston rod which passes through a bore extending in the transverse direction of the crosshead pin 20. The fastening of the cross head pin to the piston rod pin is then secured with a screw nut screwed onto the free end of the piston rod pin. Such a compound is e.g. disclosed in the specification of Swiss Patent No. 540,442.
Denne kendte forbindelse har den væsentlige ulempe, at den samlede længde af systemet stempel-stempelstang er længere, end det er tilladeligt til mange 30 anvendelser, da med denne forbindelse navnlig den til udskiftning nødvendige højde af maskinrummet bliver utilladelig stor.This known connection has the major disadvantage that the overall length of the system piston-piston rod is longer than is permissible for many applications, since with this connection, in particular, the height of the machine space required for replacement becomes prohibitively large.
Fra dansk patent nr. 49.557 kendes en krydshovedstem- 2 147302 1 pelmaskine, hvori en forbinde·!sesbolt er ført gennem krydshovedtappen - stempelpinden - og er demonterbar fra stempelstangen, idet forbindelsesbolten gennem en boring i krydshovedtappen fastgøres i et bundhul 5 med gevind i stempelstangen. Mellem krydshovedtappen og stempelstangen er der anbragt et bæreorgan, som er forsynet med en boring, hvorigennem forbindelsesbolten kan passere. Dette bæreorgan både komplicerer konstruktionen og Øger byggehøjden af stempel-stem-10 pelstangsystemet.From Danish Patent No. 49,557, a cross head piston machine is known in which a connecting bolt is passed through the cross head pin - the piston pin - and is removable from the piston rod, the connecting bolt through a bore in the cross head pin being secured to a bottom hole 5 with thread in the piston rod. . Between the cross-head pin and the piston rod there is arranged a support which is provided with a bore through which the connecting bolt can pass. This support both complicates the construction and increases the construction height of the piston-piston rod system.
Den foreliggende opfindelse tager sigte på at angive en forbindelse af den omhandlede art, der sammen med gunstige styrkeegenskaber muliggør en lavere udskift-15 ningshøjde end de kendte forbindelser.SUMMARY OF THE INVENTION The present invention aims to provide a compound of the kind which, together with favorable strength properties, allows a lower replacement height than the known compounds.
Dette opnås ifølge opfindelsen ved, at forbindelsen er udformet som angivet i krav l's kendetegnende del. 1 2 3 4 5 6 7 8 9 10 11This is achieved according to the invention in that the compound is designed as defined in the characterizing part of claim 1. 1 2 3 4 5 6 7 8 9 10 11
Ved denne udformning opnår man en forbindelse, med 2 hvilken udskiftningshøjden kan sættes ned, medens 3 der tages fuldt hensyn til styrkeegenskaberne ved, 4 at skrueforbindelsen på den største del af sin læng 5 de forlægges til et område, der ligger uden for den 6 hovedkraftstrøm, der forårsages af gaskræfterne. Der 7 med bliver påvirkningen af skrueforbindelsen på grund 8 af den skiftende gaskraftstrøm i stort omfang redu 9 ceret, og den kan således dimensioneres spinklere end 10 i de kendte konstruktioner, og man opnår en sikring 11 af centreringen af skrueforbindelsen, og denne bliver bedre beskyttet mod træthedsbrud.In this embodiment, a connection is obtained with which 2 the replacement height can be lowered, while 3 is fully taken into account the strength properties by 4 that the screw connection on the greater part of its length 5 is placed in an area outside the 6 main power current. caused by gas forces. With this, the influence of the screw connection due to 8 of the changing gas power flow is reduced to a large extent 9, thus it can be dimensioned flatter than 10 in the known constructions and a securing 11 of the centering of the screw connection is obtained and this is better protected. against fatigue fractures.
3 147382 . i Skrueforbindelsen kan hensigtsmæssigt være udformet enten som angivet i krav 2 eller som angivet i krav 3.3 147382. The screw connection may conveniently be designed either as set forth in claim 2 or as set forth in claim 3.
5 Stempelstangen kan umiddelbart stå i berøring med krydshovedtappen. Når udskiftningshøjden dog skal reduceres endnu mere, kan forbindelsen hensigtsmæssigt være udformet som angivet, i krav 5·' 10 Hensigtsmæssigt kan forbindelsen også være udformet som angivet i krav 6 og eventuelt i krav7.5 The piston rod can immediately be in contact with the cross head pin. However, when the replacement height is to be reduced even further, the connection may conveniently be configured as set forth in claim 5.
Opfindelsen forklares nærmere under henvisning til tegningen, på hvilken 15The invention is further explained with reference to the drawing, in which:
Pig. 1 viser et snit gennem et krydshoved i en dieselmotor med en første udførelsesform for forbindelsen, ved hvilken et ydergevind på en forbindelsesbolt 20 er indskruet i et indergevind i stem pelstangen,Pig. 1 shows a section through a crosshead of a diesel engine with a first embodiment of the connection in which an outer thread of a connecting bolt 20 is screwed into an inner thread of the piston rod,
Pig. 2 et til fig. 1 svarende snit med en anden udførelsesform for opfindelsen, 25 ved hvilken et ydergevind på stempel stangen er indskruet i et indergevind i forbindelsesbolten, ogPig. 2 is a view of FIG. 1 corresponding to another embodiment of the invention, in which an outer thread of the piston rod is screwed into an inner thread of the connecting bolt, and
Fig. 3 ligeledes et til fig. 1 svarende snit 30 med en tredie udførelsesform for op findelsen, ved hvilken der mellem stempelstangen og krydshovedtappen er anbragt et mellemstykke.FIG. 3 also a FIG. 1 is a section 30 corresponding to a third embodiment of the invention, in which an intermediate piece is arranged between the piston rod and the crosshead pin.
U7382 1 I figurerne er tilsvarende dele betegnet med ens Jjenn visningstal.U7382 1 In the figures, similar parts are denoted by similar Jjenn display numbers.
De i fig. 1,2 og 3 viste krydshoveder har hver en 5 krydshovedtap 2, der er fast forbundet med en stempelstang 1. Krydshovedtappen er lejret drejelig i et lejehus 3 og i glidesko 4, der er forskydelige i føringer 5 på det ikke viste motorhus. Lejehuset 3 er fast forbundet med en plejIstang 6 og overfører til 10 plejIstangen gas- og massekræfter, som er overført til krydshovedtappen 2 ved hjælp af stempelstangen 1.The The cross heads shown in 1,2 and 3 each have a 5 cross head pin 2 which is firmly connected to a piston rod 1. The cross head pin is mounted pivotally in a bearing housing 3 and in sliding shoes 4 which are slidable in guides 5 of the motor housing not shown. The bearing housing 3 is firmly connected to a plunger rod 6 and transmits to the plunger rod gas and mass forces which are transmitted to the cross head pin 2 by means of the plunger rod 1.
Stempelstangen 1 har en som en forlængelse af den udformet stempelstangtap 11, der over et rodplan 7 går 15 over i stempelstangen 1.The piston rod 1 has one as an extension of the formed piston rod pin 11 which extends over a root plane 7 into the piston rod 1.
Til forbindelse af stempelstangen 1 med krydshovedtappen 2 tjener en forbindelsesbolt 8, der strækker sig gennem en boring 9, som forløber i krydshovedtap-20 pen 2's tværretning, og med stempelstangen 1 danner en skrueforbindelse 10. I allé tre figurer ligger skrueforbindelsen 10 for størstedelen på krumtapsiden af rodplanet 7.For connecting the piston rod 1 with the cross head pin 2, a connecting bolt 8 extending through a bore 9 extending in the transverse direction of the cross head pin 20 and with the piston rod 1 forms a screw connection 10. In all three figures, the screw connection 10 is for the most part the crank side of the root plane 7.
25 Ved udførelsesformen i fig. 1 rager stempelstangtappen 11 ind i en boring 9 i krydshovedtappen 2 og er ført centralt i denne. Ydergevindet for forbindelse sbolt en 8 er indskruet i et indergevind på stempelstangen 1, der forløber koaksialt med stempel-30 stangtappen 11. Stempelstangen 1 står i umiddelbar berøring med krydshovedtappen 2.25 In the embodiment of FIG. 1, the piston rod pin 11 projects into a bore 9 of the crosshead pin 2 and is centrally guided therein. The outer thread of connection bolt 8 is screwed into an inner thread of the piston rod 1 which extends coaxially with the piston rod pin 11. The piston rod 1 is in direct contact with the cross head pin 2.
Forbindelsesbolten 8 har på den ende, der vender hen mod krumtapakslen, en yderligere skrueforbindelse 12, 5 147382 1 der består af et ydergevind 13 på forbindelsesbolten 8 og en møtrik 14, der er påskruet på ydergé-vindet. Møtrikken ligger an mod den endeflade på krydshovedtappen 2, der vender hen mod krumtapaks-5 len. Gevinddiameteren af skrueforbindeIsen 12 er fortrinsvis 20 til 40 % større end gevinddiameteren af skrueforbindelsen 10, så at der opnås en tilnærmelsesvis konstant styrke af forbindelsesbolten 8 overfor træthedsbrud både for træk- og trykkræfter.The connecting bolt 8 has at the end facing the crankshaft an additional screw connection 12, consisting of an outer thread 13 on the connecting bolt 8 and a nut 14 screwed onto the outer thread. The nut abuts the end face of the cross-head pin 2 facing the crankshaft 5. The thread diameter of the screw connection 12 is preferably 20 to 40% greater than the thread diameter of the screw connection 10, so that an approximately constant strength of the connecting bolt 8 is obtained for fatigue and compressive fractures both.
1010
Ved udførelsesformen i fig. 2 er stempelstangtappen 11 forsynet med en tap 15» der har et ydergevind, som er indskruet i et indergevind i forbindelsesbolten 8. Stempelstangen 1 står også her i umiddelbar 15 berøring med krydshovedtappen 2. Udskiftningshøjden er ved denne udførelsesform større end ved udførelsesformen i fig, 1, men skrueforbindelsen 10 befinder sig helt på krumtapakselsiden af rodplanet 7.In the embodiment of FIG. 2, the piston rod pin 11 is provided with a pin 15 which has an outer thread screwed into an inner thread of the connecting bolt 8. The piston rod 1 is also in immediate contact with the cross head pin 2. The replacement height is greater in this embodiment than in the embodiment in FIG. 1, but the screw connection 10 is completely on the crankshaft side of the root plane 7.
20 Ved udførelsesformen i fig. 3 er der mellem stempelstangen 1 og krydshovedtappen 2 anbragt et mellemstykke 16, der er demonterbart forbundet, f.eks. sammenskruet med krydshovedtappen 2 og har en med boringen 9 i krydshovedtappen koaksial boring 17.til cen-25 treret føring af stempelstangtappen 11. Stempelstan gen 1 står i berøring med den øverste flade på mellemstykket 16. Med denne udførelsesform kan der i nødstilfælde opnås en yderligere forkortelse af udbygningshøjden, der svarer til højden af mellemstykket 30 16.20 In the embodiment of FIG. 3, a spacer 16 is provided between the piston rod 1 and the crosshead pin 2, which is removably connected, e.g. screwed with the cross-head pin 2 and has a coaxial bore 17 with a bore 9 in the cross-head pin 17. centered on the piston rod pin 11. The piston rod 1 contacts the upper surface of the intermediate piece 16. In this case, an additional emergency can be obtained. shortening the extension height corresponding to the height of the intermediate piece 30 16.
Ved alle tre udførelsesformer for forbindelsen ifølge opfindelsen kan. forbindelsesbolten 8 være en ikke vist skrue, hvis .hoved ligger an mod den endeflade på krydshovedtappen 2, der vender hen mod krumtapakslen.In all three embodiments of the compound of the invention, the connecting bolt 8 is a screw not shown whose head abuts the end face of the cross head pin 2 facing the crankshaft.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH622577 | 1977-05-20 | ||
| CH622577A CH620276A5 (en) | 1977-05-20 | 1977-05-20 | Connection between a piston rod and a cross head pin for a piston machine, in particular for a cross head diesel engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK213178A DK213178A (en) | 1978-11-21 |
| DK147382B true DK147382B (en) | 1984-07-09 |
| DK147382C DK147382C (en) | 1985-01-28 |
Family
ID=4306243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK213178A DK147382C (en) | 1977-05-20 | 1978-05-16 | RELATIONSHIP BETWEEN Piston rod and cross head loss in a stamping machine, namely a cross head diesel engine |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS53143819A (en) |
| AT (1) | AT370218B (en) |
| BR (1) | BR7803168A (en) |
| CH (1) | CH620276A5 (en) |
| DE (1) | DE2724042C3 (en) |
| DK (1) | DK147382C (en) |
| GB (1) | GB1589138A (en) |
| IT (1) | IT1095124B (en) |
| SU (1) | SU772496A3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931685U (en) * | 1982-08-20 | 1984-02-27 | 共同コンクリ−ト株式会社 | drain |
| US4872395A (en) * | 1987-11-23 | 1989-10-10 | Dresser-Rand Company | Crosshead per se, and in combination with a connecting rod assembly and a piston rod |
| ITMI20011757A1 (en) * | 2001-08-09 | 2003-02-09 | Nuovo Pignone Spa | MEANS OF CONNECTION BETWEEN ROD AND CROSS HEAD IN AN ALTERNATIVE COMPRESSOR |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH167876A (en) * | 1932-02-19 | 1934-03-15 | William Doxford & Sons Limited | Single-acting piston machine with cross head. |
| CH540442A (en) * | 1971-07-13 | 1973-08-15 | Sulzer Ag | Cross-head journal bearings for piston engines, in particular for diesel internal combustion engines |
-
1977
- 1977-05-20 CH CH622577A patent/CH620276A5/en not_active IP Right Cessation
- 1977-05-26 AT AT0375677A patent/AT370218B/en not_active IP Right Cessation
- 1977-05-27 DE DE2724042A patent/DE2724042C3/en not_active Expired
-
1978
- 1978-04-20 JP JP4716678A patent/JPS53143819A/en active Granted
- 1978-05-11 IT IT23243/78A patent/IT1095124B/en active
- 1978-05-15 GB GB19584/78A patent/GB1589138A/en not_active Expired
- 1978-05-16 SU SU782613996A patent/SU772496A3/en active
- 1978-05-16 DK DK213178A patent/DK147382C/en active
- 1978-05-19 BR BR7803168A patent/BR7803168A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATA375677A (en) | 1982-07-15 |
| SU772496A3 (en) | 1980-10-15 |
| DK213178A (en) | 1978-11-21 |
| IT7823243A0 (en) | 1978-05-11 |
| CH620276A5 (en) | 1980-11-14 |
| DE2724042C3 (en) | 1981-04-23 |
| DK147382C (en) | 1985-01-28 |
| DE2724042A1 (en) | 1978-11-23 |
| BR7803168A (en) | 1979-01-02 |
| JPS53143819A (en) | 1978-12-14 |
| GB1589138A (en) | 1981-05-07 |
| JPS5738811B2 (en) | 1982-08-18 |
| AT370218B (en) | 1983-03-10 |
| DE2724042B2 (en) | 1980-07-24 |
| IT1095124B (en) | 1985-08-10 |
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