NO151034B - LARVEFOETTER - Google Patents

LARVEFOETTER Download PDF

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Publication number
NO151034B
NO151034B NO77771179A NO771179A NO151034B NO 151034 B NO151034 B NO 151034B NO 77771179 A NO77771179 A NO 77771179A NO 771179 A NO771179 A NO 771179A NO 151034 B NO151034 B NO 151034B
Authority
NO
Norway
Prior art keywords
contact surfaces
bolts
links
connecting links
grooves
Prior art date
Application number
NO77771179A
Other languages
Norwegian (no)
Other versions
NO771179L (en
NO151034C (en
Inventor
Ludwig Pietzsch
Harald Kauer
Rudolf Hartmann
Original Assignee
Pietzsch Ibp Gmbh
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
Priority claimed from DE2614691A external-priority patent/DE2614691C3/en
Priority claimed from DE2657905A external-priority patent/DE2657905C3/en
Priority claimed from DE19772708538 external-priority patent/DE2708538C3/en
Application filed by Pietzsch Ibp Gmbh filed Critical Pietzsch Ibp Gmbh
Publication of NO771179L publication Critical patent/NO771179L/en
Publication of NO151034B publication Critical patent/NO151034B/en
Publication of NO151034C publication Critical patent/NO151034C/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D55/00Endless track vehicles
    • B62D55/08Endless track units; Parts thereof
    • B62D55/18Tracks
    • B62D55/20Tracks of articulated type, e.g. chains
    • B62D55/205Connections between track links
    • B62D55/21Links connected by transverse pivot pins
    • B62D55/211Bitubular chain links assembled by pins and double connectors

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Clamps And Clips (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Saccharide Compounds (AREA)
  • Steroid Compounds (AREA)

Description

Foreliggende oppfinnelse angår larveføtter hvis kiedeledd oppviser rørelementer anordnet vinkelrett på bevegelsesretningen, hvilke rørelementer er forbundet, over forbindelsesledd samt bolter som rager gjennom disse forbindelsesledd og r ørelementene, med nabokjedeledd i bevegelsesretningen, idet forbindelsesleddene griper om endene til bolter som tilhører hvert sitt nabokjedeledd og er sikret mot dreining og aksialforskyvning relativt til boltendene ved hjelp av en for-bindelsesinnretning som klemmer kontaktflater på forbindelsesleddene mot kontaktflater på boltendene. The present invention relates to caterpillar feet whose keel joints exhibit tube elements arranged perpendicular to the direction of movement, which tube elements are connected, over connecting links and bolts that project through these connecting links and tube elements, with neighboring chain links in the direction of movement, the connecting links grasping the ends of bolts belonging to each neighboring chain link and are secured against rotation and axial displacement relative to the bolt ends by means of a connection device which clamps contact surfaces on the connecting links against contact surfaces on the bolt ends.

Slike larveføtter er f.eks. beskrevet i tysk patentansøkning nr. P 2.533.79 3.3. Such caterpillar feet are e.g. described in German patent application No. P 2.533.79 3.3.

For å oppnå klemvirkning anvendes vanligvis skruer for å klemme forbindelsesleddene fast på boltene. Vanligvis er det tilstrekkelig at klemvirkningen gir tilstrekkelig kraft for å sikre sammenholding, idet det kan benyttes avflatede par-tier som deler av kontaktflatene mellom boltene og forbindelsesleddene, for å hindre dreining av boltene i forhold til forbindelsesleddene, og aksialkrefter trenger ikke å opp-tas av klemforbindelsen. In order to achieve a clamping effect, screws are usually used to clamp the joints firmly onto the bolts. Usually it is sufficient that the clamping action provides sufficient force to ensure cohesion, since flattened parts can be used as parts of the contact surfaces between the bolts and the connecting joints, to prevent rotation of the bolts in relation to the connecting joints, and axial forces do not need to be absorbed of the clamp connection.

Når imidlertid forbindelsesleddene kommer i innbyrdes kontakt under bruk, slik at det oppstår aksialkrefter som påvirker boltene, må klemvirkningen også overføre disse krefter. However, when the connecting links come into contact with each other during use, so that axial forces occur which affect the bolts, the clamping action must also transfer these forces.

Særlig når det på kontaktflatene er smørende stoffer, slik som olje eller fett, er det et problem å oppnå en pålitelig klemforbindelse, fordi det er mulighet for at de smørende stoffer ikke fortrenges fullstendig fra kontaktflatene ved sammenskruingen. Especially when there are lubricating substances, such as oil or grease, on the contact surfaces, it is a problem to achieve a reliable clamping connection, because there is a possibility that the lubricating substances are not completely displaced from the contact surfaces when screwing together.

Formålet med den foreliggende oppfinnelse er å komme frem til en løsning av dette problem. The purpose of the present invention is to arrive at a solution to this problem.

I henhold til oppfinnelsen er dette oppnådd ved at det i kontaktflatene oå boltene eller forbindelsesleddene er anordnet fordy<p>ninger fordelt rundt omkretsen. According to the invention, this has been achieved by the fact that there are depressions distributed around the circumference in the contact surfaces and the bolts or connecting links.

Fordy<p>ninqene utqjør fortrenqninqsrom for f.eks. smøremiddel oq andre stoffer som måtte befinne seq på kontaktflatene, idet slike stoffer ved tiltrekking av en skrue som klemmer forbindelsesleddet sammen fortrenges fra kontaktflatene oo inn i fordypninqene, slik at det sikres qod flatekontakt, oq slik at det ikke risikeres at slike stoffer langsomt Dresses ut oq nedsetter flatetrykket mens larve-fottene er i bruk. Oppfinnelsen medfører at fremmede stoffer oå kontaktflatene fortrenoes i oq med tiltrekkinqen. Når skruen trekkes til med momentnøkkel, har operatøren visshet for at det er ODonådd korrekt flatetrykk i kontaktflatene på henholdsvis forbindelsesleddene og boltene. Fordypningen eller fordypningene er bare utformet på den ene del, nemlig enten på boltendene eller i forbindelsesleddene. Fordypningene, f.eks. i form av riller, sikrer en reproduserbar inn-stilling av maksimal friksjon mellom boltene og forbindelsesleddene . The fordy<p>ninqs form a training room for e.g. lubricant and other substances that may be present on the contact surfaces, as such substances are displaced from the contact surfaces and into the recesses by tightening a screw that clamps the joint together, so that good surface contact is ensured, and so that there is no risk that such substances are slowly dressed out oq reduces the surface pressure while the caterpillar feet are in use. The invention means that foreign substances on the contact surfaces are attracted to each other. When the screw is tightened with a torque wrench, the operator is certain that the correct surface pressure has been reached in the contact surfaces of the connecting links and the bolts respectively. The recess or recesses are only formed on one part, namely either on the bolt ends or in the connecting joints. The recesses, e.g. in the form of grooves, ensures a reproducible setting of maximum friction between the bolts and the connecting links.

Fordypningen, henholdsvis fordypningene, gir plass for smøre-middel eller andre fremmedelementer mellom kontaktflatene, slik som støv eller smuss, hvilket ved sammenklemmingen presses ut, slik at kontaktflatene renses for eventuelle fremmedelementer . Derved kan oppnås den størst mulige friksjonskoeffisient mellom bolt og forbindelsesledd. The recess, or the recesses, provide space for lubricant or other foreign elements between the contact surfaces, such as dust or dirt, which is pushed out during the clamping, so that the contact surfaces are cleaned of any foreign elements. Thereby, the greatest possible coefficient of friction between bolt and connecting link can be achieved.

Fordypningene kan anordnes på boltene eller i de tilhørende utsparinger i forbindelsesleddene, f.eks. i form av langsgående riller eller gjenger med stor stigning, hvorved imidlertid spissene av gjengeflankene må bortskjæres, for å gi kontaktflate. Fordypningene kan også være utformet som spor, f.eks. krysspor. Når de utgjør langsgående riller, kan de dannes ved rømming. The depressions can be arranged on the bolts or in the associated recesses in the connecting links, e.g. in the form of longitudinal grooves or threads with a large pitch, whereby, however, the tips of the thread flanks must be cut away, to provide a contact surface. The recesses can also be designed as grooves, e.g. cross track. When they form longitudinal grooves, they can be formed by escape.

I det følgende skal oppfinnelsen beskrives.ut fra den ved-føyde tegning, som viser flere utførelsesformer og nærmere detaljer. Fig. 1 viser i perspektiv et forbindelsesledd og to for-skjellig utformede boltender med fordypninger, i henhold til oppfinnelsen. Fig. 2 viser et forbindelsesledd med utsparinger med fordypninger i henhold til oppfinnelsen, samt en tilhørende bolt. In what follows, the invention will be described based on the attached drawing, which shows several embodiments and further details. Fig. 1 shows in perspective a connecting link and two differently designed bolt ends with recesses, according to the invention. Fig. 2 shows a connecting link with recesses with depressions according to the invention, as well as an associated bolt.

Forbindelsesleddet 1 vist i fig. 1 består av ett stykke. The connecting link 1 shown in fig. 1 consists of one piece.

Det har en langsgående, gjennomgående åpning 2 hvis ender er utvidet til utsparinger 3 for å oppta boltene 4. Utsparingene har en form som er tilpasset boltendene, nemlig et hul-sylindrisk område 5 over den største del av omkretsen samt et avflatet område 6. Tilsvarende har boltene et sylindrisk område 5' og et avflatet området 6'. Utsparingene er bearbeidet slik at de passer til boltendene. It has a longitudinal, through opening 2, the ends of which are extended into recesses 3 to receive the bolts 4. The recesses have a shape adapted to the bolt ends, namely a hollow-cylindrical area 5 over the largest part of the circumference and a flattened area 6. Similarly the bolts have a cylindrical area 5' and a flattened area 6'. The recesses are machined to fit the bolt ends.

De to brodeler 7, 8 i det midtre område av forbindelsesleddet lar seg trekke mot hverandre ved hjelp av en ikke vist klem-skrue, hvdlken kan føres inn gjennom gjennomgående hull 9, 10 i de to brodeler og som kan trekkes til ved hjelp av en ikke vist mutter. Alternativt kan hullet 10 i brodelen 8 utformes med gjenger. The two bridge parts 7, 8 in the middle area of the connecting link can be pulled towards each other by means of a clamping screw, not shown, which can be inserted through through holes 9, 10 in the two bridge parts and which can be tightened by means of a nut not shown. Alternatively, the hole 10 in the bridge part 8 can be designed with threads.

Mens utsparingen 3 i forbindelsesleddet 1 har glatt overflate, er det på den bolt som er vist til venstre i fig. 1 utformet langsgående riller 12 over en lengde som tilsvarer bredden av forbindelsesleddet. Mellom de langsgående riller 12 står det tilbake flater 13 som i montert tilstand har kontakt med den glatte overflate 5, 6 i utsparingen 3. While the recess 3 in the connecting link 1 has a smooth surface, it is on the bolt shown on the left in fig. 1 designed longitudinal grooves 12 over a length corresponding to the width of the connecting link. Between the longitudinal grooves 12 there are remaining surfaces 13 which in the assembled state are in contact with the smooth surface 5, 6 in the recess 3.

Bolten vist til høyre i fig. 1 har i stedet for langsgående riller flere skrueformede spor 14 på boltenden som samvirker med utsparingen. Mellom disse spor 14 er dannet kontaktflater 15 for samvirke med de glatte flater 5, 6 i utsparingen. Det kan også anordnes bare et enkelt spor 14 med The bolt shown on the right in fig. 1 has, instead of longitudinal grooves, several helical grooves 14 on the bolt end which cooperate with the recess. Between these grooves 14, contact surfaces 15 are formed for cooperation with the smooth surfaces 5, 6 in the recess. It can also be arranged only a single track 14 with

tilsvarende liten stigning. correspondingly small increase.

Ved utførelseseksemplet vist i fig. 2 er boltene på de boltender som samvirker med utsparingene utstyrt med glatt, sylindrisk overflate 5' og glatte avflatninger 6' mens utsparingene 3 såvel i det sylindriske område 5 som idet avflatede område 6 har langsgående riller 12 og mellom disse liggende oppragende kontaktflater 13 for samvirke med bolt-over f1 åtene. In the embodiment shown in fig. 2, the bolts on the bolt ends that cooperate with the recesses are equipped with a smooth, cylindrical surface 5' and smooth flattenings 6', while the recesses 3 both in the cylindrical area 5 and in the flattened area 6 have longitudinal grooves 12 and protruding contact surfaces 13 lying between these for cooperation with the bolt-over f1 eats.

Med de viste deler oppnås ved tiltrekning av den ikke viste skruen en klemkraft vinkelrett på kontaktflatene med en høyere spesifikk flatebelastning enn ved glatte kontaktflater, hvilket presser rester av smøremiddel og eventuelle fremmedlegemer bort fra kontaktflatene og inn i de langsgående riller 12, henholdsvis sporene 14, slik at det mellom kontaktflatene oppstår en størst mulig friksjonskoeffisient, bestemt ved materialene i henholdsvis bolten og forbindelsesleddene. Hvis rillene eller sporene ikke fantes, kunne det ikke unn-gås at smøremiddel eller fremmedlegemer ble liggende mellom kontaktflatene, og friksjonen og dermed den nødvendige klemkraft ville derved ikke kunne beregnes. Foruten at det mangler plass for at smøremiddel og fremmedlegemer kan unn-vike, vil også den oppnådde spesifikke flatebelastning bli mindre med samme tiltrekningsmoment for skruen. With the parts shown, by tightening the screw, not shown, a clamping force is achieved perpendicular to the contact surfaces with a higher specific surface load than with smooth contact surfaces, which pushes residues of lubricant and any foreign matter away from the contact surfaces and into the longitudinal grooves 12, respectively the grooves 14, so that the largest possible coefficient of friction occurs between the contact surfaces, determined by the materials in the bolt and the connecting links respectively. If the grooves or grooves did not exist, it could not be avoided that lubricant or foreign bodies were left between the contact surfaces, and the friction and thus the necessary clamping force would thereby not be able to be calculated. Apart from the lack of space for lubricant and foreign bodies to escape, the specific surface load achieved will also be smaller with the same tightening torque for the screw.

Hensiktsmessig kan bredden av de langsgående riller 12 henholdsvis de skrueformede spor 14 og avstandene mellom disse bestemt av kontaktflatene 13, 15 være valgt slik at flatetrykket i kontaktflatene ligger like under flytegrensen for materialet i boltene og forbindelsesleddene. Appropriately, the width of the longitudinal grooves 12 and the screw-shaped grooves 14 and the distances between these determined by the contact surfaces 13, 15 can be chosen so that the surface pressure in the contact surfaces is just below the yield strength of the material in the bolts and connecting joints.

Claims (3)

1. Larveføtter hvis kjedeledd oppviser rørelementer anordnet vinkelrett på bevegelsesretninger, hvilke rørelementer er forbundet, over forbindelsesledd (1) samt bolter (4) som rager gjennom disse forbindelsesledd og rørelementene, med nabokjedeledd i bevegelsesretninger, idet forbindelsesleddene griper om endene til bolter som tilhører hvert sitt nabokjedeledd og er sikret mot dreining og aksialforskyvning relativt til boltendene ved hjelp av en forbindelsesinn-retning som klemmer kontaktflater (13) på forbindelsesleddene mot kontaktflater (13, 15) på boltendene, karakterisert ved at det i kontaktflatene (13, 15) på boltene (4) eller forbindelsesleddene (1) er anordnet fordypninger (12, 14) fordelt rundt omkretsen.1. Caterpillar feet whose chain links exhibit tube elements arranged perpendicular to the directions of movement, which tube elements are connected, over connecting links (1) and bolts (4) that project through these connecting links and the tube elements, with neighboring chain links in the directions of movement, the connecting links grasping the ends of bolts belonging to each its neighboring chain link and is secured against rotation and axial displacement relative to the bolt ends by means of a connection device which clamps contact surfaces (13) of the connection links against contact surfaces (13, 15) of the bolt ends, characterized in that in the contact surfaces (13, 15) of the bolts (4) or the connecting links (1) are provided with depressions (12, 14) distributed around the circumference. 2. Larveføtter som angitt i krav 1, karakterisert ved at fordypningene omfatter langsgående riller (12).2. Caterpillar feet as specified in claim 1, characterized in that the recesses comprise longitudinal grooves (12). 3. Larveføtter som angitt i krav 2, karakterisert ved at rillene (12) er dannet ved rømming.3. Caterpillar feet as stated in claim 2, characterized in that the grooves (12) are formed by reaming.
NO77771179A 1976-04-05 1977-04-04 LARVEFOETTER NO151034C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2614691A DE2614691C3 (en) 1976-04-05 1976-04-05 Caterpillar
DE2657905A DE2657905C3 (en) 1976-12-21 1976-12-21 Connection between the chain links of a crawler belt
DE19772708538 DE2708538C3 (en) 1977-02-28 1977-02-28 Connection between the chain links of a crawler belt

Publications (3)

Publication Number Publication Date
NO771179L NO771179L (en) 1977-10-06
NO151034B true NO151034B (en) 1984-10-22
NO151034C NO151034C (en) 1985-01-30

Family

ID=27186819

Family Applications (1)

Application Number Title Priority Date Filing Date
NO77771179A NO151034C (en) 1976-04-05 1977-04-04 LARVEFOETTER

Country Status (15)

Country Link
JP (1) JPS52145929A (en)
AR (1) AR213637A1 (en)
AU (1) AU510969B2 (en)
BR (1) BR7702133A (en)
CA (1) CA1082264A (en)
CH (2) CH616892A5 (en)
DK (1) DK142648C (en)
ES (1) ES457533A1 (en)
FR (1) FR2347253A1 (en)
GB (1) GB1575368A (en)
IT (1) IT1082547B (en)
NL (1) NL183449C (en)
NO (1) NO151034C (en)
SE (1) SE424173B (en)
TR (1) TR19750A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450505A1 (en) * 1979-03-02 1980-09-26 Thomson Csf SEMICONDUCTOR DEVICE COMPRISING A DIFFUSED GUARD RING AND MANUFACTURING METHOD THEREOF
DE3043874A1 (en) * 1980-11-21 1982-06-24 Rheinmetall GmbH, 4000 Düsseldorf TRACK CHAIN
JPS58126286U (en) * 1982-02-22 1983-08-27 株式会社小松製作所 Track linkage device for tracked vehicles
DE3405699C2 (en) * 1983-04-22 1985-08-01 Diehl GmbH & Co, 8500 Nürnberg Device as an assembly aid on caterpillars for tracked vehicles
FR2623767A1 (en) * 1987-11-30 1989-06-02 Hutchinson Articulation spindle for a vehicle caterpillar track connector, connector and caterpillar track including such spindles
US5201171A (en) * 1991-11-26 1993-04-13 Caterpillar Inc. Method and apparatus for retaining a track chain joint
FR2703017B1 (en) * 1993-03-24 1995-06-02 Giat Ind Sa Connection device for vehicle track.
FR2766450B1 (en) 1997-07-22 1999-09-17 Giat Ind Sa DEVICE FOR CONNECTING TRACK LINKS
CN100361857C (en) * 2002-11-20 2008-01-16 株式会社普利司通 Rubber track
JP4963128B2 (en) * 2009-11-25 2012-06-27 三菱重工業株式会社 Crawler connection structure
US10518829B2 (en) * 2017-06-26 2019-12-31 Caterpillar Inc. Lobed track pin
GB2567464A (en) * 2017-10-12 2019-04-17 Clark Tracks Ltd Improvements in or relating to track apparatus
US11230334B2 (en) * 2019-05-24 2022-01-25 Caterpillar Inc. Master link for a track chain

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113018A (en) * 1933-02-27 1938-04-05 James Cunningham Son & Company Vehicle track
DE1605585A1 (en) * 1966-07-22 1971-03-11 Diehl Kg Zweigwerk Der Fa Dieh Connector caterpillar
DE1680325C3 (en) * 1968-03-16 1974-04-25 Gerlach-Werke Gmbh, 6650 Homburg Track for all-terrain vehicles, especially armored vehicles
DE1950947C3 (en) * 1969-10-09 1973-11-22 Ruf, Walter, Dipl.-Ing., Bottighofen, Thurgau (Schweiz) Caterpillar

Also Published As

Publication number Publication date
IT1082547B (en) 1985-05-21
GB1575368A (en) 1980-09-17
SE7703221L (en) 1977-10-06
AU2394577A (en) 1978-10-12
DK142648B (en) 1980-12-08
FR2347253B1 (en) 1982-05-21
NL7703746A (en) 1977-10-07
DK142648C (en) 1981-08-10
BR7702133A (en) 1977-12-20
CH616892A5 (en) 1980-04-30
ES457533A1 (en) 1978-08-16
TR19750A (en) 1979-11-28
NO771179L (en) 1977-10-06
NO151034C (en) 1985-01-30
DK143977A (en) 1977-10-06
CH626022A5 (en) 1981-10-30
NL183449B (en) 1988-06-01
NL183449C (en) 1988-11-01
SE424173B (en) 1982-07-05
AR213637A1 (en) 1979-02-28
CA1082264A (en) 1980-07-22
FR2347253A1 (en) 1977-11-04
JPS52145929A (en) 1977-12-05
AU510969B2 (en) 1980-07-24

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