The application relates to a modular slurry wall cutter for preparing a slurry trench that is connectable to a carrier machine, said slurry wall cutter having a frame and at least one cutting tool arranged at the frame to break up soil material. The frame here comprises an upper frame part, a middle frame part, and a lower frame part that are releasably connectable to one another, with the upper and lower frame parts being releasably connectable to one another both directly and via the middle frame part that can be arranged therebetween. The application further relates to a carrier machine, such as to a cable excavator, having a slurry wall cutter in accordance with the application.

The invention includes digging equipment having a self-propelled base machine provided with an arm that supports a digging tool. The digging tool is provided with a device for crumbling soil. The digging tool is operatively connected to the base machine through a suspending flexible element that can be wound or unwound by a winch arranged on the base machine. The base machine also includes a main power engine, to actuate all the hydraulic apparatuses of the digging equipment, and a hydraulic system consisting of two independent and separate hydraulic circuits (S; U). A first hydraulic circuit (S) is configured to control and supply the main service apparatuses of the base machine, including a movement apparatus for moving the digging tool. A second hydraulic circuit (U) is configured to control and supply the main digging apparatuses of the digging tool, including at least the actuators of the device for crumbling soil.

Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

Described herein are tools, systems and methods for conditioning, strengthening and/or improving in situ soil geotechnical or agricultural properties while at least temporarily reducing soil density, energy requirements, and tool wear.

The invention relates to a trench cutter having at least one pair of cutting wheels, at least one bearing plate on which the cutting wheels of a pair are rotatably arranged on the two sides of the bearing plate, a base frame on the underside of which the at least one bearing plate is attached, and a cutting wheel drive for driving the cutting wheels via a transmission lubricated with transmission oil in the bearing plate. According to the invention it is provided that at least one heat exchanger is arranged above the bearing plate and that for cooling the transmission oil, an oil circuit is formed to which the at least one heat exchanger is connected above the bearing plate.

The invention relates to a change system for wear parts of an excavator bucket of an earthmoving machine, comprising a carrier structure which can be fastened to or is formed on the excavator bucket and which has a projection and also an exchange part with a pocket-like cavity for releasably plugging the exchange part onto the projection of the carrier structure, wherein, to secure the exchange part on the carrier structure, there is provided at least one connection member which is connected to the carrier structure via a first connecting mechanism and to the exchange part via a second connecting mechanism physically separated from the first connecting mechanism, wherein at least one of the two connecting mechanisms is a releasable connection.

The invention relates to a ground-working machine and a method for producing wall panels, with the ground-working machine having at least two elongate drilling and mixing tools arranged parallel to each other, which comprise a rod-form base body, on which a first screw conveyor and at least one second screw conveyor are arranged, the second screw conveyor being axially spaced apart from the first screw conveyor. According to the invention it is provided that at least on one drilling and mixing tool at a lower end the first screw conveyor is formed with an outer diameter that is greater than an outer diameter of the second screw conveyor which is arranged above the first screw conveyor.

The invention relates to a ground-working machine and a method for producing wall panels, with the ground-working machine having at least two elongate drilling and mixing tools arranged parallel to each other, which comprise a rod-form base body, on which a first screw conveyor and at least one second screw conveyor are arranged, the second screw conveyor being axially spaced apart from the first screw conveyor. According to the invention it is provided that at least on one drilling and mixing tool at a lower end the first screw conveyor is formed with an outer diameter that is greater than an outer diameter of the second screw conveyor which is arranged above the first screw conveyor.

A cab for a power machine having a side window and a rear window each hingedly connected to the same one of a right rear cab frame post and a left rear cab frame post such that when the side window and rear window are both opened by latches to rotate outward relative to the same rear post an airflow path is created diagonally across the operator between a front corner of the cab and an opposite rear corner of the cab.

The invention relates to a drive device for a diaphragm wall cutter, with a hydraulic motor, a gear unit, to which at least one cutting wheel of the diaphragm wall cutter can be connected on the output side, and a drive shaft which connects the hydraulic motor to the gear unit, wherein the drive shaft is mounted by way of at least one drive shaft bearing which is arranged between the hydraulic motor and the gear unit, wherein the drive shaft bearing has a lubricant feed line which is connected to a leakage discharge line of the hydraulic motor and/or to the hydraulic circuit in order to operate the hydraulic motor, and is configured to lubricate the drive shaft bearing with hydraulic oil.