公开(公告)号：US20220227436A1

公开(公告)日：2022-07-21

申请号：US17153039

申请日：2021-01-20

Applicant: Caterpillar Inc.

Inventor： Benjamin Isaac Jones ,  Mark J. Kiesel ,  Brian Konrad Loeffler

IPC: B62D55/088 ,  B62D55/21

Abstract: A track chain assembly includes a first track pad including a first pair of lugs defining a gap therebetween, and a second track pad including an intermediate lug disposed in the gap. The first pair of lugs and the intermediate lug each define a concentric bore, defining an axis of rotation for a pinned joint of the track chain assembly, and the concentric bore of one of the first pair of lugs is in communication with the gap with a first blend disposed axially between the gap and the concentric bore.

公开(公告)号：US20240301523A1

公开(公告)日：2024-09-12

申请号：US18119885

申请日：2023-03-10

Applicant: Caterpillar Inc.

Inventor： Scott Howard Magner ,  Mircea Dumitru ,  Brian Konrad Loeffler ,  Mohammed Maniruzzaman ,  Yongqiang Li ,  Simon Jiang

IPC: C21D1/10 ,  C21D1/18 ,  C22C38/04 ,  C22C38/44

CPC classification number: C21D1/10 ,  C21D1/18 ,  C22C38/04 ,  C22C38/44 ,  C21D2211/001

Abstract: Disclosed herein is an example track pad having a ground-contacting portion for use in a track-based machine to propel and support the machine across a supporting surface. The track pad may be a track pad that forms a link of a chain forming the track for the track-based machine. The track pad includes a cast body formed of a first alloy steel having a first strength and toughness. The track pad includes a roll path that contacts a roller of the track-based machine. The roll path is hardened through an induction hardening process to achieve a hardness level at a depth of 32 millimeters or more from the surface of the roll path. The roll path is shaped and positioned to contact rollers of the track drive assembly and thereby reduce wear and fatigue on the track pad as a result of contact and force transferred through the roller.