Abrégé

The invention relates to a tensioning element for setting braking force in a swing damper, wherein the tensioning element (100) is mounted centrally on a swing joint (B) in order to exert force on a brake arrangement (50) so as to result in swing damping. The tensioning element (100) includes a pin (110) serving for the suspension of an accessory (4) to be subjected to swing damping, a sleeve (130) displaceable along a shoulder (111) on the pin (110) in order to activate the brake arrangement (50), an adjusting screw (140) designed to exert axial displacement force on the sleeve (130) via a spring assembly (143), a nut (160) for adjusting the tightening force of the adjusting screw (140) and a locking element (170) which eliminates rotational movement of the screw (140) relative to the pin (110).

Classes IPC  ?

• B66C 3/00 - Éléments ou dispositifs de prise de la charge adjoints aux mécanismes de levage ou de descente ou adaptés pour être utilisés avec ces mécanismes et destinés principalement à transmettre les efforts de levage à des matériaux en vracBennes preneuses
• B66C 13/06 - Dispositifs auxiliaires pour commander les mouvements des charges suspendues ou pour empêcher le câble de prendre du mou pour limiter ou empêcher le balancement longitudinal ou transversal des charges

Abrégé

Method for austempering at least one part of a work piece, which method comprises the steps of: a) heating at least one part of the work piece to an initial austenitizing temperature (T1); b) subjecting said at least one part of the work piece to one or more austenitizing temperatures (T1... T1n) for a predetermined time to austenitize it; c) quenching said at least one part of the work piece; d) heat treating said at least one part of the work piece at one or more austempering temperatures (T2... T2n) for a predetermined time to austemper it; e) cooling the at least one part of the work piece; whereby at least one of the steps a) to e) is/are at least partly carried out under Hot lsostatic Pressing (HIP) conditions.

Classes IPC  ?

• C21D 1/20 - Trempe isotherme, p. ex. durcissement bainitique
• C21D 5/00 - Traitement thermique de la fonte
• C22C 37/10 - Fontes alliées contenant de l'aluminium ou du silicium

Abrégé

Austempered ductile iron (ADI) for components requiring high strength and/or ductility, which has a silicon content of 3.35 weight-% to 4.60 weight-%, and which is obtainable by performing an ADI-heat treatment using an austenitization temperature of at least 910ºC.

Classes IPC  ?

• C22C 37/04 - Fontes alliées contenant du graphite sphéroïdal
• C21D 5/00 - Traitement thermique de la fonte

Abrégé

Method for manufacturing at least one part of a device (22) for mounting directly or indirectly on an arm (12) of an earth-moving or material-handling machine (10), such as an excavator, tractor, harvester, forwarder or crane, whereby the device (22) enables coupling and/or positioning (tilt and/or turn) of a tool (14), such as a bucket, grapple, fork, vibratory compactor or harvesting head, relatively to the arm of the machine. The method comprises the steps of: a) forming a melt comprising unalloyed or alloyed ductile iron, b) casting at least one part of a device (22) from said melt, c) allowing said at least one part of the device to cool, d) austenitizing said at least one part of the device, e) quenching said at least one part of the device, f) austempering said at least one part of the device, and g) allowing said at least one part of the device to cool.

Classes IPC  ?

• C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
• C21D 5/00 - Traitement thermique de la fonte
• C22C 37/04 - Fontes alliées contenant du graphite sphéroïdal
• E02F 3/36 - Éléments constitutifs

Abrégé

The invention concerns an arrangement related to a rotation device for a machine provided with a working arm, for example an excavator or the like, whereby the rotation device (40) is connectable via an upper fastening device (20) to a working arm (10) and via a lower fastening device (30) to an appropriate work implement (80). The rotation device (40) comprises a swivel device (60) for transfer of pressure medium, whereby a movable element of the swivel device (60) accompanies a rotation movement imparted to the lower fastening device (30) by a rotor (41) of the rotation device, while a fixed element of the swivel device (60) is non-rotative arranged relative to a stator (41) of the rotation device and the upper fastening device (20). The swivel device (60) has two ducts running through it for pressure medium for connection to an implement unit (50) which is attached to the lower fastening device (30) in order to be used in combination with a first work implement (80). Means (55) are provided for temporary switching of the pressure medium flow to said implement unit (50) to a second working implement (90) which requires pressure medium and which temporarily takes the place of the first work implement (80). The swivel device (60) also has two ducts running through it for pressure medium for connection to locking means of the lower fastening device (30).

Classes IPC  ?

• E02F 3/36 - Éléments constitutifs
• B66C 13/08 - Dispositifs auxiliaires pour commander les mouvements des charges suspendues ou pour empêcher le câble de prendre du mou pour déposer les charges selon un orientement ou dans une position donnés