DK152943B

DK152943B - IN RUBBER STOCK BOLT FOR CASTLE FOOD CHAINS

Info

Publication number: DK152943B
Application number: DK287081A
Authority: DK
Inventors: Klaus Spies; Klaus Roehrig; Peter Breidohr
Original assignee: Diehl Gmbh & Co
Priority date: 1980-09-03
Filing date: 1981-06-29
Publication date: 1988-05-30
Also published as: CH653300A5; IL63564A0; JPS5747261A; DE3033086A1; AT384406B; AR231422A1; SE8104992L; NO812179L; GB2083163A; GB2083163B; FR2489233A1; DE3033086C2; FR2489233B1; ATA293781A; CA1154055A; NL8102954A; DK287081A; BE889279A; DK152943C

Description

DK 152943BDK 152943B

oisland

Den foreliggende opfindelse angår en i gummi lejret bolt til kæder for bæltedrevne køretøjer med påvulkaniserede gummiringe og i overensstemmelse med det i kravets indledning anførte.BACKGROUND OF THE INVENTION The present invention relates to a rubber-bolted chain for belt-driven vehicles with roll-up rubber rings and in accordance with the preamble of the claim.

5 Ved i gummi lejrede larvefodskæder indpresses bolten med påvulkaniserede gummiringe i larvefodskædelegemets boring. Ved kædens omløb på hjulgearet sker der en forvridning af bolten i forhold til rørlegemet. Forvridningsvejene bevirker en deformation af gummiringene i form af en torsionspåvirkning. Ved 10 friktionsforbindelse mellem gummiringene og rørlegemeboringens væg forhindres en gennemrutschning af gummiringene/ j:vf. i denne forbindelse larve fod s kæden af tobængselsbol tarten ifølge DE-GM 19 05 877.5 In rubber-caterpillar caterpillar chains, the bolt with vulcanized rubber rings is pressed into the caterpillar chain body bore. When the chain is turned on the wheel gear, the bolt is distorted in relation to the pipe body. The distortion paths cause a deformation of the rubber rings in the form of a torsional influence. At 10 friction connection between the rubber rings and the pipe body bore, a penetration of the rubber rings / j: vf is prevented. in this connection, the larva foot s chain of the two-pronged bolt tart according to DE-GM 19 05 877.

Ved en larvefodskæde ifølge enhængselsboltarten ifølge DE-OS 15 27 55 412 foreligger der ved kædens omløb ved hjulgearets omstyringshjul en dobbelt så stor drejningsvinkel som ved larvefodskæden ifølge tohængselsboltarten. Derved ophæves den til en vis drejningsvinkel tilstedeværende friktionsslutning eller -forbindelse mellem de med forspænding forsynede gummi-20 ringe og rørlegemeboringens væg, og dette resulterer i, at gummiringene rutscher igennem. Som ulemper opstår der en hurtig slidning af gummiringene ved unormal stor friktionsvarme og friktionsslid med stigende ødelæggelse af gummistrukturen.For a caterpillar foot chain according to the single hinge bolt type according to DE-OS 15 27 55 412, there is a double angle of rotation of the chain at the gearwheel gearwheel wheel as for the caterpillar foot chain of the two hinge bolt type. Thereby, the frictional closure or connection of the pre-tensioned rubber rings and the pipe body bore wall to a certain pivot angle is canceled and this results in the rubber rings slipping through. As disadvantages there is a rapid wear of the rubber rings by abnormally large frictional heat and friction wear with increasing destruction of the rubber structure.

Den ubeskyttede bolt begynder så i boringen først at rive 25 mod rørlegemets boringsrande (stål på stål), hvilket slutteligt fører til boltens brud.The unprotected bolt then begins in the bore to first tear 25 against the bore edges (steel on steel), which eventually leads to the bolt breaking.

Fra GB-patentskrift 645.415 kendes gummibøsninger, der er bundet til såvel en indre som en ydre metaldel, uden at det 30 er anført, hvorledes denne forbindelse gennemføres. Gummibøsningens indre væg kan være forbundet til en metalbøsning, altså ikke nødvendigvis direkte på bolten.GB Patent 645,415 discloses rubber bushings which are bonded to both an inner and an outer metal part without indicating how this compound is carried out. The inner wall of the rubber bush can be connected to a metal bush, ie not necessarily directly on the bolt.

US-patentskrift nr. 2.553.646 viser en eller todelte gummi-35 bøsninger, der er bundet til boltene 1, som også til metalbøsninger, uden at det i dette skrift er angivet på hvilken måde bindingen er frembragt.U.S. Patent No. 2,553,646 discloses one or two-piece rubber bushings attached to the bolts 1, as well as to metal bushings, without specifying in which manner the bond is produced.

OISLAND

DK 152943BDK 152943B

22

Fra GB-patentskrift 599.157 er det kendt at binde et gummielement til metaldele ved varm vulkanisering uden, at der iøvrigt i dette skrift omtales larvefodskæder til bæltedrevne køre-? tøjer.From GB patent 599,157, it is known to bond a rubber element to metal parts by hot vulcanization without mentioning in this specification caterpillar foot chains for belt-driven driving? tools.

55

Det er den foreliggende opfindelses formål at forhindre en gennemrutschning af (med forspænding forsynede) gummiringe ved større vridningsvinkler, der foreligger ved kæder af enhæng-selsboltarten. Et yderligere formål består if også ved kæder 10 af tohængselsboltarten, at forøge stabiliteten for larvefodskæders bolt-gummilejring.It is an object of the present invention to prevent the passage of (pre-tensioned) rubber rings at larger angles of rotation present at chains of the single-hinge bolt type. A further object, if also for chains 10 of the two-hinge bolt type, is to increase the stability of the larva foot bearing rubber bearing.

Dette formål tilgodeses ved, at den indledningsvist omtalte bolts ringe er fastgjort på den i kravets kendetegnende del 15 anførte måde. Herved opnås sikkerhed mod gennemrutschning af bolten, idet det her for første gang anvises at forbinde gummiringene fast og umiddelbart til kædelegemet. I denne forbindelse bliver det fordelagtigt, at man også kan opnå en gennemrutschningssikker anordning af gummiringene også 20 i det tilfælde, når der i stedet for de hidtidige rørlegems-materialer, ^nemlig stål, og de hidtidige gummiringe benyttes andre materialesammenparringer, såsom plastmaterialer, fiberforstærkede plaststoffer, såvel som andre metaller end jern, for kædelegemerne, og andre elastomere materialer i stedet 25 for den hidtidige gummi i gummiringene. Det er derfor væsentligt, at der ifølge opfindelsen kan benyttes materialesammensætninger med lavere friktionsværdier end hidtil.This object is met by the rings of the initially mentioned bolt being fixed in the manner specified in the characterizing part 15 of the claim. This provides security against bolt-through penetration, as it is for the first time instructed to attach the rubber rings firmly and immediately to the chain body. In this connection, it becomes advantageous that a permeable device for the rubber rings can also be obtained also in the case where, instead of the previous tubular body materials, namely steel and the previous rubber rings, other material comparisons such as plastic materials, fiber reinforced material are used. plastics, as well as metals other than iron, for the chain members, and other elastomeric materials instead of the previous rubber in the rubber rings. It is therefore essential that, according to the invention, material compositions having lower friction values can be used than hitherto.

Et udførelseseksempel for opfindelsens genstand er vist på 30 tegningen. På denne viser fig. 1 en forenklet gengivet larvefodskæde i delsnit og ifølge enhængselsboltprincippet, 35 fig. 2 et udsnit A fra fig. 1 og fig. 3 indpresningen af en med gummiringe forsynet bolt i larvefodskædelegemets boring.An embodiment of the object of the invention is shown in the drawing. In this, FIG. 1 shows a simplified reproduced caterpillar foot section in section and according to the one-hinge bolt principle; FIG. 2 is a section A of FIG. 1 and FIG. 3 shows the compression of a rubber ring bolt in the bore of the larval foot body.

DK 152943BDK 152943B

33

OISLAND

Som vist i fig. 1 er der mellem to larvefodskædelegemer eller bæltestykker 1, 2 en maksimal vridningsvinkel 3, således som den forekommer ved omløbet om det ikke viste omstyringshjul.As shown in FIG. 1, between two caterpillar chain members or belt pieces 1, 2 there is a maximum angle of rotation 3, as occurs at the orbit of the steering wheel not shown.

Ved den efterfølgende beskrivelse af forbindelsesstedet for 5 larvefodskædelegemerne 1, 2, såsom knaster og spændbøjle, beskrives hver gang kun en forbindelsesdel. Der er anbragt flere sådanne forbindelsesdele. Deres antal afhænger blandt andet af den trækkraft, som kæden skal overføre.In the following description of the attachment site of the 5 larval foot chain bodies 1, 2, such as cams and clamp, only one connector is described each time. Several such connecting members are provided. Their number depends, among other things, on the traction that the chain must transmit.

10 på larvefodskædelegemet 1, 2 er der på forsiden anbragt indsatte knaster 4, 5, hvorpå der’via en skrueforbindelse 11, 12 er påskruet en spændbøjle 10. Spændbøjlen 10 omslutter den pågældende frie ende 13, 14 af den i fig. 3 viste bolt 15. Ved hjælp af her ikke nærmere omtalte forholdsregler sikres, at 15 spændbøjlen 10 er fastgjort form- og kraftsluttende til bolten 15, og at kædelegemerne 1, 2 holder banen nøjagtigt. På bolten 15 er der vulkaniseret gummiringe 20-23. Gummiringene 20-23 klæber via et klæbelag 26 (se fig. 2) til boringen 25's væg 24. Disse gummiringe 20-23's diameter 35 er større end boringen 20 25's diameter 36. Ved indpresning i boringen 25 deformeres gummiringene 20-23, de udfylder mellemrummene 37, 37' og er forspændt.10 on the crawler foot body 1, 2 are inserted on the front side, knobs 4, 5, on which a screw connection 11, 12 is screwed on a clamping bracket 10. The clamping bracket 10 encloses the relevant free end 13, 14 of the one shown in FIG. 3 by means of bolt 3, which is not specifically mentioned here, it is ensured that the clamping bracket 10 is fixedly molded to the bolt 15 and that the chain members 1, 2 hold the web accurately. On the bolt 15, there are vulcanized rubber rings 20-23. The rubber rings 20-23 adhere via an adhesive layer 26 (see Fig. 2) to the wall 24. The diameter 35 of these rubber rings 20-23 is larger than the diameter 36. The diameter of the bore 20 25 is 25 When pressed into the bore 25, the rubber rings 20-23 are deformed. the spaces 37, 37 'and are biased.

Som vist i fig. 2 er klæbelaget 26 påført på rørlegemet l's 25 væg 24, hvilket klæbelag 26 fast forbinder den indpressede gummi 30 med boringen 25's væg 24. Som klæbelag 26 tjener et i og for sig kendt en- eller tomkomponentmateriale.As shown in FIG. 2, the adhesive layer 26 is applied to the wall 24 of tubular body 25, which adhesive layer 26 firmly connects the pressed rubber 30 with the wall 24. The bore 25 serves as a single or empty component material known per se.

På grundlag af fig. 3 beskrives fremgangsmådetrinnene, der 30 kræves til vridningssikker placering af gummiringene 20-23 i kædelegemet l's boring 25.Based on FIG. 3, the process steps 30 required for torsion proof placement of the rubber rings 20-23 in the bore 25 of the chain member 1 are described.

1) På boringen 25's fedtfrie væg 24 påføres et klæbelag 26.1) On the grease-free wall 24 of the bore 25, an adhesive layer 26 is applied.

35 2) Bolten 15 med de påvulkaniserede gummiringe 20-23 indpresses i boringen 25 under tilsætning af et i pilretningen 31 tilført, ikke vist glidemiddel, f.eks. en til gummien tilpasset glideolie.2) The bolt 15 with the vulcanized rubber rings 20-23 is pressed into the bore 25 with the addition of a lubricant not shown in the arrow direction 31, e.g. a slip oil adapted to the rubber.

Claims

3. After pressing the rubberized bolt 15, the chain members 1, 2 must be stored for approx. 70 hours at room temperature for the reaction process between the adhesive layer 26 and the rubber rings 20-23. 5 The described adhesion of the rubber rings in the bore of the caterpillar chain bodies can be readily transferred to spring elements affected by torsion or pushing. Preferably for such spring elements, the rubber rings of which are biased 10 between metal parts. An example is a spring element of the kind that is inserted into the area of a motor vehicle at the rear axle. Claims. 15 -------------------- Bolt housed in a bore (25) of a caterpillar chain body (1,2) for a belt vehicle with vulcanized elastomeric rings on the bolt (15) (20-23), in particular rubber rings, and wherein relative rotation 20 can take place between the bolt (15) and the body (1,2), characterized in that the elastomeric material of the rings (20-23) without heating via an adhesive layer (26) is adhered to the wall of the bore. 25 30 35