Abstract:
A pin retention device (300) comprises a fastener (308) defining a longitudinal axis (L300), a first end (310) and a second end (312) along the longitudinal axis (L300), a head (314) at the first end (310) and a threaded portion (316) at the second end (312), a tubular spacer (304) defining a thru-hole (318) configured to receive the fastener (308), and a nut (302) defining a threaded hole (320) configured to mate with the threaded portion (316) of the fastener (308).
Abstract:
A method of hardening an article of manufacture that includes a body that defines a longitudinal axis made of a material that is capable of being hardened and that is intended for a particular use is provided. The method may comprise locally heating the material at a first location found on the article along the axis to a first predetermined depth in a direction that is perpendicular to the axis and locally heating the material at a second location found on the article along the axis to a second predetermined depth in a direction that is perpendicular to the axis.
Abstract:
A track link assembly is disclosed for a machine. The track link assembly may include a first track link (202) having a first thru hole (212) and a second track link (204) having a second thru hole (214) aligned with the first thru hole (212). The track link assembly may further include a track pin (114) disposed within the first and second thru holes (212, 214). The track pin (114) may have an end protruding from the first and second track links. The track link assembly may also include a ring-shaped flange (300, 306) integrally formed from the end of the track pin (114) after insertion of the track pin (114) into the first and second track links. The ring-shaped flange (300, 306) may have an outer diameter larger than a diameter of the first and second thru holes (212, 214).
Abstract:
During the break-in period of track (22) assembly components, galling can occur between the components during use. The components include a pin (68) that is received within a bushing (70) and alternatively a sleeve bearing (74) between the pin (68) and the bushing (70) depending on the load. A method to prevent or reduce galling includes applying a coating (78) of zinc phosphate and a low-friction layer (76) on top of the zinc phosphate (78). The low-friction coating (76) can be made of WS 2 (Tungsten Disulphide), BN (Boron Nitride), MoS 2 (Molybdenum disulfide) or PTFE (Polytetrafluoroethylene) and deposited during a mechanical treatment.
Abstract:
The disclosure relates to a system and method for a link (128) for a track chain (124) in a ground-engaging track system (102). The link (128) has an elongate link body (130) including a first and a second crown (402, 404). The elongate link body (130) includes a shoe surface (132) and a rail surface (134). The shoe surface (132) is configured to contact a track shoe coupled to the elongate link body (130). The rail surface (134) is opposite the shoe surface (132) and has a first end section (302), a middle section (306), and a second end section (304). The first and second crowns (402, 404) on the rail surface (134) each define a convex portion of the rail surface (134). The first crown (402) is positioned on the first end section (302) and the second crown (404) is positioned on the second end section (304). The first and second crowns (402, 404) are configured to delay scallop formation in the rail surface (134).
Abstract:
An example track assembly (14) in accordance with the present disclosure may include a pin (22), a bushing (22), a link (26), and a seal (28). The pin (22) may define an axis (23), and may include opposing ends. The bushing (22) may be positioned about the pin (22), and may include opposing ends. The link (26) may have an inner face (2) extending radially from the axis (23) and defined by at least three portions. The three portions may include a recessed portion (30) disposed between two non-recessed portions (31). The recessed portion (30) may have a recessed face (29). The seal (28) may be disposed at least partially within the recessed portion (30) of the link (26). The seal (28) may engage the recessed face (29) of the link (26) and may engage an end of the bushing (22) such that a gap (36) exists between the inner face (2) of the link (26) and the end of the bushing (22).
Abstract:
A track assembly (16) is disclosed for use with a mobile machine (10). The track assembly may have a plurality of crawler shoes (20). Each of the plurality of crawler shoes may include a ground engaging surface (56) and first and second pairs of links (48) laterally spaced-apart on a side opposite the ground engaging surface. The track assembly may also have a first pin (22) connecting the first pair of links of each of the plurality of crawler shoes to form a first continuous chain (32), and a second pin (22) connecting the second pair of links of each of the plurality of crawler shoes to form a second continuous chain. The track assembly may further have a drive wheel (18) with dual sprockets (28) configured to simultaneously engage the first and second continuous chains.
Abstract:
A track for a snow groomer (1) has a number of grousers (10) spaced apart, extending crosswise to the travelling direction (D) of the track, and each having a gripportion (15) for gripping the terrain, and a blunt edge (10a) opposite the grip portion (15). A chain (12) is connected to the blunt edges (10a) of the grousers (10) so as to be engaged, in use, by a drive sprocket (7) of a snow groomer (1).
Abstract:
A link (25) for connecting a track shoe has shaft holes (31), (32) at both ends thereof. In the link (25), a plurality of insertion holes (39) are formed between both shaft holes (31), (32), and window holes (40), (41) are formed at the positions corresponding to respective insertion holes (39). Bolts (43) are inserted into respective insertion holes (39), and nuts (44) screwed onto the ends of the bolts (43) in the window holes (40), (41) are tightened to fix the link (25) to the track shoe (26). The area of the window hole (41) in proximity to the second shaft hole (32) is made larger than that of the other window hole (40) so that the rigidly of the link (25) can be gradually decreased toward the second shaft hole (32).
Abstract:
A cartridge bearing assembly (30) for a track chain (14) of a track type work machine (10) is provided. The cartridge bearing assembly (30) includes axial/radial load bearing insert members (36a, 36b) positioned about a pin (34), and a rotatable bushing (42) positioned therebetween. Crowned sleeve bearings (40) are disposed between the insert members (36a, 36b) and the pin (34), as well as between the pin (34) and the rotatable bushing (42). Collars (44a, 44b) are disposed at opposite ends of the pin (34) and fixedly coupled thereto, trapping the other components of the cartridge assembly (30) therebetween. A method of operating a track type work machine (10) is further provided, including reducing wear between coupled track links (15a, 15b) by reacting axial loads via insert members (36a, 36b) positioned about a track pin (34).