A method for controlling movement of a movable element of a mining machine includes the steps of providing a relation between control values for a hydraulic valve arranged to affect a movement of the movable element and a parameter representative of the (resulting) movement of the movable element. The method further includes receiving an input representative of a desired movement of the movable element, obtaining a control value for the hydraulic valve based on the relation, and using a parameter value corresponding to the desired movement, operating the hydraulic valve with a control signal using the obtained control value, obtaining, from a feedback mechanism, a feedback relative to the movement of the movable element resulting from operating the hydraulic valve with the control signal, determining a correction value based on the desired movement and the feedback, and updating at least a part of the relation based on the correction value.

A cutter bit adapted to be fixed onto a working surface of a rotating drum of a milling, planing, mining or reclaiming machine is provided. The body of the cutter bit is generally formed of a hardened steel, the cutting surface may be a diamond composition fixed in a step in the upper end of the cutter bit. The cutter bit includes a cutting surface, and the cutting surface may include non-parallel side edges and an upper cutting edge parallel to a lower edge. The lower edge may be any length sufficient to inhibit unintended angular displacement of the cutting surface during operation of the working surface. Alternatively or in addition, the cutting surface may be defined by three edges to allow the cutting surface to be removed and repositioned in at least a second orientation.

A cutter bit adapted to be fixed onto a working surface of a rotating drum of a milling, planing, mining or reclaiming machine is provided. The body of the cutter bit is generally formed of a hardened steel, the cutting surface may be a diamond composition fixed in a step in the upper end of the cutter bit. The cutter bit includes a cutting surface, and the cutting surface may include non-parallel side edges and an upper cutting edge parallel to a lower edge. The lower edge may be any length sufficient to inhibit unintended angular displacement of the cutting surface during operation of the working surface. Alternatively or in addition, the cutting surface may be defined by three edges to allow the cutting surface to be removed and repositioned in at least a second orientation.

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.

An earth working machine (10), for example a road milling machine (10), recycler, stabilizer, or surface miner, having a propelling unit (22) and a machine frame (12) carried by the propelling unit (22), comprises a working apparatus (32) for earth working. Provision is made that the earth working machine (10) comprises, on an underside (12a) of the machine frame (12) facing toward the supporting substrate of the machine (10), a maintenance door (52) that is movable between a raised operational readiness position and a lowered maintenance position and that comprises, on its inner side (52a) that faces away from the supporting substrate (U) in the operational readiness position, at least one functional configuration (56, 58) that assists a maintenance operation.

An earth working machine (10), for example a road milling machine (10), recycler, stabilizer, or surface miner, having a propelling unit (22) and a machine frame (12) carried by the propelling unit (22), comprises a working apparatus (32) for earth working. Provision is made that the earth working machine (10) comprises, on an underside (12a) of the machine frame (12) facing toward the supporting substrate of the machine (10), a maintenance door (52) that is movable between a raised operational readiness position and a lowered maintenance position and that comprises, on its inner side (52a) that faces away from the supporting substrate (U) in the operational readiness position, at least one functional configuration (56, 58) that assists a maintenance operation.

An earth working machine (10), for example a road milling machine (10), recycler, stabilizer, or surface miner, having a propelling unit (22) and a machine frame (12) carried by the propelling unit (22), comprises a working apparatus (32) for earth working; an operator's platform (24), having an operating console (26) for controlling at least one functional device (32, 39) of the earth working machine (10), being provided on the machine frame (12). Provision is made according to the present invention that the earth working machine (10) comprises, in the region of the operator's platform (24), a seat mount arrangement (66) that is embodied to be brought into releasable mounting engagement with a counterpart mount arrangement (76) of an operating seat (62, 64).

An earth working machine (10), for example a road milling machine (10), recycler, stabilizer, or surface miner, having a propelling unit (22) and a machine frame (12) carried by the propelling unit (22), comprises a working apparatus (32) for earth working; an operator's platform (24), having an operating console (26) for controlling at least one functional device (32, 39) of the earth working machine (10), being provided on the machine frame (12). Provision is made according to the present invention that the earth working machine (10) comprises, in the region of the operator's platform (24), a seat mount arrangement (66) that is embodied to be brought into releasable mounting engagement with a counterpart mount arrangement (76) of an operating seat (62, 64).

The invention relates to a milling machine, in particular a road milling machine, a stabilizer, a recycler or a surface miner, comprising a drive means which is configured such that the milling machine performs translatory and/or rotatory movements on the ground, and a working means which is configured such that the ground is machined. The invention also relates to a method for operating a milling machine of this type. The milling machine according to the invention has a control unit 15 to input drive parameters and work parameters. The control unit 15 is distinguished by a selection unit 15C to select an operating mode from a plurality of operating modes. The control and processing unit 20 has a memory 20A which stores at least one predetermined drive parameter which is assigned to the operating mode, and/or at least one predetermined work parameter which is assigned to the operating mode, for each operating mode of the plurality of operating modes. The control and processing unit 20 is configured such that at least one assembly 4, 5; 8, 10, 11, 12, 13, 17, 18, 19 of the drive means and working means is controlled subject to the at least one drive parameter or work parameter which is stored in the memory 20A for the operating mode selected using the selection unit 15C, such that the particular machine function is carried out. The milling machine further provides that at least one function which describes the dependence of a work parameter of one assembly on a drive parameter of another assembly is stored for each operating mode, the control and processing unit 20 being configured such that, based on this function, at least one assembly of the working means or drive means is controlled such that the particular machine function is carried out.