公开(公告)号：WO2023064098A1

公开(公告)日：2023-04-20

申请号：PCT/US2022/044867

申请日：2022-09-27

Applicant: CATERPILLAR INC.

Inventor： JOHANNSEN, Eric J.

IPC: B62D55/21 ,  B62D55/32

Abstract: A track component (26, 40, 28a, 28b) for use with a track assembly (14) includes a gyro sensor (44a, 44b) that monitors a track wrap angle (α) of the track chain assembly (18) about the idler wheel (30), or the drive sprocket (16).

公开(公告)号：WO2023046245A1

公开(公告)日：2023-03-30

申请号：PCT/DE2022/100707

申请日：2022-09-21

Applicant: DST DEFENCE SERVICE TRACKS GMBH

Inventor： PARIZEK, Markus ,  KENSY, Jürgen

IPC: B62D55/21

Abstract: Die Erfindung betrifft eine Gleiskette (10) für Kettenfahrzeuge, insbesondere für militärische Kettenfahrzeuge, mit mehreren in Kettenrichtung (K) hintereinander angeordneten und schwenkbeweglich miteinander verbundenen Kettengliedern (1 ), die jeweils zwei Verbindungsmittel (2, 3) aufweisen, wobei zumindest ein Verbindungsmittel (2, 3) als sich quer zur Kettenrichtung (K) erstreckende rohrförmige Bolzenaufnahme (2.1 ) zur Aufnahme eines Verbindungsbolzens (8) ausgestaltet ist und wobei mindestens ein Zugträgerwickel (4) zur Übertragung von Zugkräften von einem Verbindungsmittel (2) auf das andere Verbindungsmittel (3) vorgesehen ist.

公开(公告)号：WO2023027877A1

公开(公告)日：2023-03-02

申请号：PCT/US2022/039363

申请日：2022-08-04

Applicant: CATERPILLAR INC.

Inventor： JOHANNSEN, Eric J.

IPC: B62D55/21

Abstract: A track joint assembly (34) in a track-type machine (10) includes a track link (28) having a pin bore (48) and a bushing bore (50) formed therein. A track pin (30) is attached to the track link (28) within the pin bore (48), and a track bushing (52) is attached to the track link (28) within the bushing bore (50). The track pin (30) and the track link (28) are attached by way of a tight interference-fit, and the bushing (52) and track link (28) are attached by way of a light interference-fit. Once placed in service, the bushing (52) can commence rotation during track operation to reduce wear and obviate the need for bushing turns during servicing.

公开(公告)号：WO2022159189A1

公开(公告)日：2022-07-28

申请号：PCT/US2021/062317

申请日：2021-12-08

Applicant: CATERPILLAR INC.

Inventor： JONES, Benjamin I. ,  KIESEL, Mark J. ,  LOEFFLER, Brian K.

IPC: B62D55/21

Abstract: A track chain assembly (126) includes a first track pad (200, 200a) including a first pair of lugs (232, 234) defining a gap (236) therebetween, and a second track pad (200, 200a) including an intermediate lug (230) disposed in the gap (236). The first pair of lugs (232, 234) and the intermediate lug (230) each define a concentric bore (206, 206a), defining an axis of rotation (132) for a pinned joint (138) of the track chain assembly (126), and the concentric bore (206, 206a) of one of the first pair of lugs (232, 234) is in communication with the gap (236) with a first blend (238) disposed axially between the gap (236) and the concentric bore.

公开(公告)号：WO2022132514A1

公开(公告)日：2022-06-23

申请号：PCT/US2021/062306

申请日：2021-12-08

Applicant: CATERPILLAR INC.

Inventor： WEISBRUCH, Eric, B. ,  NASH, Jeffrey, P. ,  CLARKE, Donovan, S. ,  STEINER, Kevin, L.

IPC: B62D55/21

Abstract: An articulated chain assembly (36) includes standard links (38), a master link (40), and pins (42) pivotably coupling together the standard links (38) and master link (40). The master link (40) includes a first half link (50) and a second half link (56), and bolt holes (78, 82) extending through the first half link (50) and the second half link (56). A first bolt (96) is within a first one of the bolt holes (78) and has a necked-down bolt shank (104) defining a lesser necked-down axial length. A second bolt (108) is within a second one of the bolt holes (82) and includes a necked-down bolt shank (116) defining a greater necked-down axial length. The first bolt (96) and second bolt (108) may have unequal full axial lengths.

公开(公告)号：WO2022067317A1

公开(公告)日：2022-03-31

申请号：PCT/US2021/071556

申请日：2021-09-22

Applicant: GENERAL DYNAMICS LAND SYSTEMS

Inventor： BAMFORD, Michael B.

IPC: B62D55/21 ,  B62D55/28

Abstract: A composite track shoe and an endless track suitable for a tracked vehicle is described herein. The composite track shoes has a shoe body with a first bearing block extending from a first lateral edge and a second bearing block extending from a second lateral edge. The shoe body also has a center guide extending from a first face thereof the shoe body. A track pad is detachably secured to the track shoe and extends from a second face of the shoe body opposite the first face. An endless track is formed by interlinking the first bearing block on a first track shoe with the second bearing block a second track shoe positioned adjacent to the first track shoe. A pin extends through the first bearing block of the first track shoe and the second bearing block of the second track shoe for pivotally coupling them together.

公开(公告)号：WO2021183282A8

公开(公告)日：2021-09-16

申请号：PCT/US2021/019349

申请日：2021-02-24

Applicant: CATERPILLAR INC.

Inventor： WEAVER, Douglas, Trent ,  VELIZ, Mark, D. ,  RECKER, Roger, L.

IPC: B62D55/21 ,  B21K23/02 ,  B62D55/32

Abstract: A bushing (100) for a track assembly includes a tubular bushing substrate (110) having a longitudinal length and an outer surface (112). The outer surface (112) includes at least one flat portion (134). The bushing (100) also includes at least one white iron member (120). The at least one white iron member (120) includes a flat inner surface (132), and the flat inner surface (132) of the at least one white iron member (120) is fixed to the flat portion (134) of the outer surface (112) of the tubular bushing substrate (110).

公开(公告)号：WO2021156807A1

公开(公告)日：2021-08-12

申请号：PCT/IB2021/050944

申请日：2021-02-05

Applicant: ITALTRACTOR ITM S.P.A.

Inventor： CALIA, Eustachio ,  MORETTI, Nicolas

IPC: B62D55/092 ,  B62D55/21 ,  B62D55/14 ,  B62D55/32 ,  G05D23/24

Abstract: A tracked undercarriage roller assembly (17) comprises a roller body (18) having a through cavity (19) delimited by a radially inner surface (20), a shaft (22) inserted into the through cavity (19) of the roller body (18), a bushing (32) extending from a first axial end (32a) to a second axial end (32b) and radially interposed between the roller body (18) and the shaft (22), an annular chamber (34) at least partially filled with a lubricant and radially interposed between the shaft (22) and the bushing (32), a housing seat (37) obtained in the shaft (22) and comprising an inlet portion (39) facing an axial end surface (22d) of the shaft (22) and a measuring portion (40) placed inside the shaft (22) in an axial position comprised between the first axial end (32a) and the second axial end (32b) of the bushing (32), wherein the inlet portion (39) and the measuring portion (40) are each other aligned along an axial direction. A temperature transducer (41) is placed inside the housing seat (37) at the measuring portion (40), wherein the measuring portion (40) is placed at a radial distance from the bushing (32) between 8 millimetres and 50 millimetres.

公开(公告)号：WO2021118801A1

公开(公告)日：2021-06-17

申请号：PCT/US2020/061952

申请日：2020-11-24

Applicant: CATERPILLAR INC.

Inventor： BAAR, William

IPC: B62D55/21

Abstract: A track joint assembly (38) includes a first track chain (30) and a second track chain (32), and a track pin (34) including a first pin end (62), a second pin end (64), and a center section (66). A track guiding space (86) extends between the first track chain (30) and the second track chain (32). The center section (66) of the track pin (34) has an enlarged diameter, relative to first and second pin ends (62,64), and an outer wear surface (68) exposed to the track guiding space (86). The outer wear surface (68) may directly contact a rotatable track-engaging element in a ground-engaging track system (18), such as a sprocket (26).

公开(公告)号：WO2021067041A1

公开(公告)日：2021-04-08

申请号：PCT/US2020/051188

申请日：2020-09-17

Applicant: CATERPILLAR INC.

Inventor： RATHOD, Chandrasen R. ,  RECKER, Roger L. ,  PICKERILL, Robert J. ,  KEELE, Scott E. ,  WEAVER, Douglas T. ,  SORDELET, Daniel J.

IPC: B62D55/21

Abstract: A steel track chain component (162, 164, 166, 168, 202, 204), such as a track bushing (204), may be formed with a carburized portion (404), a hardface portion (412), and a core portion (410). The core portion (410) may be softer than the carburized portion (404), which in turn, may be softer than the hardface portion (412). This configuration of the various portions of the component (162, 164, 166, 168, 202, 204) may allow for relatively high wear resistance of the component (162, 164, 166, 168, 202, 204), as well as toughness. The core portion (410) may be mostly ferrite crystal structure, while the carburized portion (412) and the hardface portion (412) may include martensitic and/or austenitic crystal structure. The carburized portion (412) may be formed by carburizing the track chain component (162, 164, 166, 168, 202, 204) in a heated and carbon rich environment. The hardface portion (412) may be formed by welding a hardface alloy over at least a portion of the carburized portion (404).