The invention relates to a bit holder for an earth working machine, in particular a road milling machine, that comprises a bit receptacle in the region of a working side of a support member and that indirectly or directly carries an insertion projection on an insertion projection side of the support member, the support member comprising two stripping surfaces [first or second stripping surfaces] that form a stripping surface pair and are at an angle to one another. In order to achieve a stable and long-lived configuration with such a bit holder, provision is made according to the present invention that the support member comprises at least one further stripping surface that is at an angle to the two stripping surfaces of the stripping surface pair.

The invention relates to a bit holder for an earth working machine, in particular a road milling machine, that comprises a bit receptacle in the region of a working side of a support member and that indirectly or directly carries an insertion projection on an insertion projection side of the support member, the support member comprising two stripping surfaces [first or second stripping surfaces] that form a stripping surface pair and are at an angle to one another. In order to achieve a stable and long-lived configuration with such a bit holder, provision is made according to the present invention that the support member comprises at least one further stripping surface that is at an angle to the two stripping surfaces of the stripping surface pair.

The present invention belongs to the technical field of milling machines, and mainly relates to a novel cutter holder and base system for a milling machine. The cutter holder and base system according to the present invention aims to solve the problems in the prior art that a cutter holder structure is unreasonable, the cutting force of a cutter cannot be well dispersed in the cutter holder and a base, so that the service lives of the cutter holder and the base are shortened. The base is provided with a hole-shaped inner area and two curved surface areas, where the two curved surface areas are disposed in a circumferential area of the hole-shaped inner area, the curved surface areas are arranged at an angle, and each curved surface area includes two curved surfaces. The cutter holder improves its own usage performance while a lighter weight is achieved.

A cutting tool holding device, which is for holding a cutting tool, includes a base, a holder, and a limiting set, wherein the holder is disposed on the base, and the limiting set is disposed in a non-circular channel of the base. A connecting shaft portion of the holder is for inserting into a storage hole of the base, wherein the connecting shaft portion includes a shaft body and at least one positioning portion, and the non-circular channel includes an abutting member and a bolt. The bolt is passed through the abutting member, wherein the abutting member is moved to an opening hole of the storage hole along an axis by rotating the bolt so as to push the positioning portion and abut the shaft body.

Locking device for securing a wear part (1) on a support (2) for excavators and similar machines, the locking device that comprises a locking element (20), with a locking end, a thread (40), and at least one helical spring (30) defining a longitudinal axis, where the spring (30) is at least partially threaded in the thread (40). The support (2) comprises a housing (12) and the wear part (1) comprises an orifice (11) so that, in a mounted position, the housing (12) and the orifice (11) are at least partially overlapped, where the locking device is able to be introduced in the housing (12), where, in the mounted position, the locking end at least partially emerges from the housing (12) and penetrates into the orifice (11).

Locking device for securing a wear part (1) on a support (2) for excavators and similar machines, the locking device that comprises a locking element (20), with a locking end, a thread (40), and at least one helical spring (30) defining a longitudinal axis, where the spring (30) is at least partially threaded in the thread (40). The support (2) comprises a housing (12) and the wear part (1) comprises an orifice (11) so that, in a mounted position, the housing (12) and the orifice (11) are at least partially overlapped, where the locking device is able to be introduced in the housing (12), where, in the mounted position, the locking end at least partially emerges from the housing (12) and penetrates into the orifice (11).

An earth working machine encompasses a machine body having a machine frame and a drive configuration rotationally drivable relative to the machine frame around a drive axis (A). It further encompasses a working apparatus (32) for earth working to which the drive configuration is releasably connected in drive torque-transferring fashion for rotation together, the drive configuration projecting from an axial end axially into the working apparatus (32) and the working apparatus (32) being retained on the drive configuration, against axial displacement relative to the drive configuration, by an accessible central bolt arrangement having a bolt axis collinear with the drive axis (A). Provision is made according to the present invention that the earth working machine encompasses a bolting moment bracing arrangement (82) which is connected or connectable in bolting moment-transferring fashion to a bolt component, helically movable relative to the drive configuration, of the bolt arrangement, and which comprises a bracing region (82e, 82gf) that is embodied for bolting moment-bracing abutment in a bracing bolting direction against a counterpart bracing region (84b, 84c), the drive configuration being embodied to be driven to rotate, in a rotation direction codirectional with the bracing bolting direction, while the bracing region (82e, 82f) is in abutment against the counterpart bracing region (84b, 84c).

An earth working machine encompasses a machine body having a machine frame and a drive configuration rotationally drivable relative to the machine frame around a drive axis (A). It further encompasses a working apparatus (32) for earth working to which the drive configuration is releasably connected in drive torque-transferring fashion for rotation together, the drive configuration projecting from an axial end axially into the working apparatus (32) and the working apparatus (32) being retained on the drive configuration, against axial displacement relative to the drive configuration, by an accessible central bolt arrangement having a bolt axis collinear with the drive axis (A). Provision is made according to the present invention that the earth working machine encompasses a bolting moment bracing arrangement (82) which is connected or connectable in bolting moment-transferring fashion to a bolt component, helically movable relative to the drive configuration, of the bolt arrangement, and which comprises a bracing region (82e, 82gf) that is embodied for bolting moment-bracing abutment in a bracing bolting direction against a counterpart bracing region (84b, 84c), the drive configuration being embodied to be driven to rotate, in a rotation direction codirectional with the bracing bolting direction, while the bracing region (82e, 82f) is in abutment against the counterpart bracing region (84b, 84c).

A rotor associated with a machine includes a shell member. The rotor also includes at least one end ring adapted to couple to an edge of the shell member. The end ring includes an annular body defining an exterior surface. The end ring also includes a plurality of angled faces formed on the exterior surface.

A rotor associated with a machine includes a shell member. The rotor also includes at least one end ring adapted to couple to an edge of the shell member. The end ring includes an annular body defining an exterior surface. The end ring also includes a plurality of angled faces formed on the exterior surface.