Self-propelled earth working machine having an electrically driven working apparatus and a balanced weight distribution
An earth working machine includes a machine frame, a plurality of rollable drive units, a rotatable working apparatus rotatable about an axis of rotation, an electric work drive, an electrical energy store, and a receiving configuration for receiving a conveyor. In a reference state in which the earth working machine stands on level ground the electrical energy store and the receiving configuration are located on opposite sides of a reference plane containing the axis of rotation and extending orthogonal to the level ground.
1 . A self-propelled earth working machine, comprising:
a machine frame having a roll axis running parallel to a longitudinal machine direction and a pitch axis running parallel to a transverse machine direction perpendicular to the longitudinal machine direction;
at least one front rollable drive unit and at least two rear rollable drive units supporting the machine frame, wherein the at least one front rollable drive unit forms a front drive axle and the at least two rear rollable drive units form a rear drive axle;
a working apparatus for ground removal work supported from the machine frame such that the working apparatus is rotatable about an axis of rotation, wherein in at least a state of the earth working machine ready for ground removal operation, the working apparatus is located directly between the two rear rollable drive units such that one rear rollable drive unit is situated on each side of the working apparatus along the axis of rotation of the working apparatus;
an electric work drive configured to drive the working apparatus to perform a rotating working movement effecting the ground removal work during a ground removal operation;
an electrical energy store configured to output electrical energy to the working apparatus during the ground removal operation, at least a portion of the electrical energy store being located directly above the front drive axle;
a receiving configuration configured to receive a conveyor to transport removed ground material; and
wherein in a reference state in which the earth working machine stands on level ground, the electrical energy store and the receiving configuration are situated on opposite sides of a reference plane containing the axis of rotation of the working apparatus and extending orthogonal to the level ground.
2 . The self-propelled earth working machine of claim 1 , further comprising:
a conveyor mounted on the receiving configuration, the conveyor being configured to convey ground material removed during a ground removal operation in a rearward direction away from the working apparatus.
3 . The self-propelled earth working machine of claim 1 , wherein:
the electric work drive is located in the longitudinal machine direction between the reference plane and the electrical energy store.
4 . The self-propelled earth working machine of claim 1 , wherein:
the electrical energy store is at least as far removed from the reference plane as is the receiving configuration.
5 . The self-propelled earth working machine of claim 4 , wherein:
the electrical energy store is at a distance from the reference plane equal to at least one-half of a maximum diameter of a rotational cutting body formed by the rotating working apparatus.
6 . The self-propelled earth working machine of claim 1 , wherein:
the electrical energy store defines a longitudinal extension of the electrical energy store relative to the machine frame; and
the earth working machine further includes at least one functional device selected from the group consisting of a cooling device, an onboard charging device for charging the electrical energy store, and a voltage transformer electrically connected to the electrical energy store, the at least one functional device being located within the longitudinal extension of the electrical energy store relative to the machine frame.
7 . The self-propelled earth working machine of claim 1 , wherein:
the electric work drive includes an alternating current motor; and
the earth working machine further includes an inverter located in the longitudinal machine direction between the reference plane and the electrical energy store.
8 . The self-propelled earth working machine of claim 7 , wherein:
the inverter and the electric work drive are situated in a common longitudinal extension of the machine frame.
9 . The self-propelled earth working machine of claim 1 , further comprising:
a hydraulic pump; and
a further electric drive configured as a drive of the hydraulic pump.
10 . The self-propelled earth working machine of claim 1 , further comprising:
at least one further electric functional device; and
a switch connecting the electrical energy store with the electric work drive and the at least one further electric functional device.
11 . The self-propelled earth working machine of claim 10 , further comprising:
a hydraulic pump; and
wherein the at least one further electric functional device includes a further electric drive configured to drive the hydraulic pump.
12 . The self-propelled earth working machine of claim 1 , wherein:
the receiving configuration is at a distance from the reference plane equal to at least one-half of a maximum diameter of a rotational cutting body formed by the rotating working apparatus.