A milling rotor of a milling machine can include a drum, cutting teeth, and a centering ring. The drum can extend along a longitudinal axis and can define an inner surface and an opposing outer surface. The drum can be securable to a drive assembly of the milling machine to allow the drum to rotate therewith. The cutting teeth can be connected to the outer surface of the drum and can be configured to engage pavement. The centering ring can be connected to the inner surface of the drum and can include a centering interface and an alignment interface. The centering interface can extend radially inward and can be engageable with a centering flange of the drive assembly to center the milling rotor with respect to the drive assembly. The alignment interface can be adjacent the centering interface and can extend radially inward of the centering interface.

In a self-propelled construction machine (1), in particular road milling machine, stabilizer, recycler or surface miner, comprising a machine frame (2), and at least one working device (6), in particular milling drum, which is arranged in a housing (4) open towards the bottom that is at least partially closed on at least one side by at least one edge protector (8) height-adjustable relative to the machine frame (2), wherein, for the purpose of height adjustment, at least one first lifting device (10) is provided, the first end (15) of which is connected to the machine frame (2), and the second end (16) of which is connected to the height-adjustable edge protector (8), it is provided for the following features to be achieved: a second lifting device (12) is provided, the first end (18) of which is connected to the machine frame (2), and the second end (20) of which is connected to a first end (22) of a transmission device (14), which is in turn connected, with a second end (24), to the height-adjustable edge protector (8).

A method for coupling a machine frame (12) of an earth working machine (10) to a working device (28) between the machine frame (12) and a substrate (U) encompasses the following steps: arranging the machine frame (12) and the working device (28) between the machine frame (12) and the substrate (U); aligning the receiving portion (42) and working device (28) relative to one another in such a way that fastening formations (56, 60) of the working device (28) are lined up, along a spacing direction, with fastening counter-formations (58, 62) of the machine frame (12); bringing the fastening formations (56, 60) and fastening counter-formations (58, 62) closer to one another; and operably fastening the working device (28) onto the receiving portion (42).

According to the present invention the aligning step encompasses the following sub-steps: connecting the machine frame (12) and the working device (28) to one another by means of a connecting apparatus (76), in such a way that the working device (28) is movable in response to its weight, parallel to the effective direction of gravity (g) and orthogonally thereto, relative to the machine frame (12); then allowing the working device (28) to hang on the machine frame (12); and then supporting the working device (28).

The invention relates to an ejector unit, in particular for a road milling machine, having an ejector that is replaceably mounted on a carrier. In one aspect the ejector is curved in a scoop-like fashion. In another aspect the ejector is reversible upon the carrier to allow the ejector to be reversed after one wear surface is worn, thus presenting a new second wear surface.

The present invention relates to a self-propelled construction machine, in particular a road milling machine, a recycler or a surface miner, comprising a machine frame 1 supported by a chassis 2 which comprises front and rear running gear 3, 4. A working device 5 is arranged on the machine frame 1 and comprises a working roller 17 for working the ground. Lifting devices 15, 16 are associated with the individual running gears 3, 4 and can each be retracted or extended for raising or lowering the running gears with respect to the machine frame. In addition, the construction machine comprises a control unit 20 for actuating the lifting devices 15, 16, which control unit comprises a lifting position measuring device 22 for detecting the lifting position of the lifting devices and a tilt detection device 23 for detecting the tilt of the machine frame 1 transversely to the working direction A of the construction machine. The control unit 20 provides a first mode of operation for working the ground and a second mode of operation for moving the construction machine, and is characterized in that, in the second mode of operation, the lifting devices 15, 16 associated with the individual running gears 3, 4 or wheel are actuated in such a way that the machine frame 1 is substantially levelled transversely to the working direction A of the construction machine, the ground clearance b preferably being at a maximum or the distance not falling below a minimum distance.

A vibrating ripper, according to the present invention, has: a main body portion; a vibrating body which is coupled to the main body portion and a vibrating body support unit and vibrates; and a vibration generating unit which is provided on the vibrating body, wherein the vibrating body support unit has a rotating member rotatably provided on the vibrating body or the main body portion for supporting the vibrating body, has first and second connecting members of which both end portions are rotatably connected to the upper and lower sides of the rotating member, with respect to the rotating center of same, and to the main body portion or the vibrating body, respectively such that the vibrating body can be supported in accordance with the main body portion, has a ripper blade provided on the vibrating body, thereby, when the vibrating body vibrates in accordance with the main body portion, offsetting, by means of the rotating of the rotating member, the change in coupling positions of the first and second connecting members and the vibrating body due to the vibration.

In a drum housing for a working drum of a construction machine or mining machine, said working drum being provided with tools and rotating about a drum axis, with a housing shell which at least partially encloses the circumference of the working drum, and with at least one inspection opening for a monitoring device arranged in the housing shell, wherein said monitoring device inspects the condition of the working drum or the tools thereof, it is provided for the following features to be achieved: a closing mechanism is arranged on the outside of the housing shell, said closing mechanism enabling closure of the at least one inspection opening.

In a drum housing for a working drum of a construction machine or mining machine, said working drum being provided with tools and rotating about a drum axis, with a housing shell which at least partially encloses the circumference of the working drum, and with at least one inspection opening for a monitoring device arranged in the housing shell, wherein said monitoring device inspects the condition of the working drum or the tools thereof, it is provided for the following features to be achieved: a closing mechanism is arranged on the outside of the housing shell, said closing mechanism enabling closure of the at least one inspection opening.

A milling machine has a frame, a rotor, a mixing chamber with a front door and a rear door, and a controller. The controller is in communication with the frame, the rotor, the front door, and the rear door, and configured to operate the milling machine in a travel mode and a work mode. When the travel mode is actuated, the controller raises the rotor to a predetermined position, closes the front door and the rear door, and raises the frame to a predetermined height. When the work mode is actuated, the controller lowers the frame to a predetermined height, lowers the rotor to a predetermined position, and opens the front door and the rear door to predetermined positions.

The present invention relates to an exchangeable milling drum box for a ground milling machine, particularly for a road milling machine, a recycler, a stabilizer or a surface miner, with a milling drum rotatably mounted in the exchangeable milling drum box and a transmission, via which the milling drum can be driven, the transmission comprising a lubrication device with a lubricant, and the exchangeable milling drum box comprising a cooling and/or heating device for lubricant. Furthermore, the present invention relates to a ground milling machine having such an exchangeable milling drum box. The present invention also relates to a method for cooling and/or heating lubricant of a transmission of a milling drum mounted rotatably in an exchangeable milling drum box of a ground milling machine, the method comprising the steps: Supplying cooling and/or a heating medium from the ground milling machine to the lubricant located in a lubrication device arranged on the exchangeable milling drum box; cooling and/or heating the lubricant through heat transfer between the coolant and/or heating medium and the lubricant; and discharging the cooling and/or heating medium from the exchangeable milling drum box to the ground milling machine.