Main chain link and articulated chain assembly for a machine

By employing pin connections and necking bolts of varying lengths in the main chain link design, the problem of unequal bolt loads was solved, improving the durability and service life of the tracked machine.

CN116981614BActive Publication Date: 2026-06-23CATERPILLAR INC
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Patent Information

Application Number
CN202180084138.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-12-15
Filing Date
2021-12-08
Publication Date
2026-06-23
Estimated Expiration
2041-12-08

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Abstract

A hinged chain assembly (36) includes a standard link (38), a master link (40), and a pin (42) pivotably coupling the standard link (38) and the master link (40) together. The master link (40) includes a first half link (50) and a second half link (56), and a bolt hole (78, 82) extending through the first half link (50) and the second half link (56). A first bolt (96) is located within a first one (78) of the bolt holes and has a necked bolt shank (104) defining a smaller necked axial length. A second bolt (108) is located within a second one (82) of the bolt holes and includes a necked bolt shank (116) defining a larger necked axial length. The first bolt (96) and the second bolt (108) can have unequal overall axial lengths.
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Citation Information

Patent Citations

  • Master link for machine track and method

    US20080174175A1

  • Reversible track link with replaceable rail and method

    US3947074A

  • Master track chain connection for crawler tractors

    US4636014A