摘要:
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.
摘要:
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).
摘要:
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.
摘要:
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).
摘要:
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).
摘要:
An undercarriage assembly includes a link assembly (48), including a plurality of laterally spaced pairs of track links (50, 52) pivotally connected to one another at pivot joints (54) to form an endless chain. The assembly may also include an idler (28), the idler including a solid disk (194) with substantially planar sides (198) and an outer tread surface (200) engaging inner portion of the endless chain.
摘要:
A bushing for use in a tracked undercarriage of a track-type machine includes a first end and a second end disposed opposite the first end. An outer surface extends between the first end and the second end and is shaped to engage a sprocket of the tracked undercarriage. The bushing also includes an annular inner surface disposed between the first end and the second end defining an internal cavity shaped to receive a track pin. An innermost portion of the inner surface forms a crown having a radius less than or equal to (PL 2 )/[(24E πDR Bush 4 )(l-cos[(PL)/(16EπDR Bush 4 ))] where L is the length of the bushing, P is the weight of the track-type machine, E is the Modulus of Elasticity of the bushing, and R Bush is a radius of the innermost portion of the annular internal cavity.
摘要翻译:用于履带式机器的履带式底架中的衬套包括第一端和与第一端相对设置的第二端。 外表面在第一端和第二端之间延伸并且成形为与履带式底盘的链轮啮合。 衬套还包括设置在第一端和第二端之间的环形内表面,其限定了被成形为接纳履带销的内腔。 内表面的最内部形成半径小于或等于(PL 2)/ [(24EπDR Bush Bush <4 4 <<4 4 4 4 crown crown crown crown crown crown) )(1-cos [(PL)/(16E DR DR <<4 4))]]其中L是衬套的长度,P是履带式机器的重量 ,E是衬套的弹性模量,而R sub是环形内腔的最内部分的半径。 p>
摘要:
The present disclosure is directed to a pin joint component for a pin joint assembly that has improved wear surfaces, especially for those portions of the pin joint component surface that interface thrust rings, lips, and other adjacent wear components. The pin joint component comprises a first treated region that is formed by removing material from the wear surface of the pin joint component and replaced with clad material. Prior to this operation, a second treated region is formed by removing material from a section of the pin joint component distinct from the first treated region and performing a nitriding process thereon.