A pivotally flexible motor mount for a rotary trenching tool allows for increased life of the overall system. A flexible motor mount includes a universal pivot arrangement that allows a motor housing to universally pivot relative to a boom to accommodate misalignment between a motor shaft axis and a rock wheel rotation axis. The flexible motor mount also includes a first pair of spherical connection joints aligned along a first pivot axis and a second pair of spherical connection joints aligned along a second pivot axis. The first and second pivot axes are generally perpendicular relative to one another. The flexible motor mount further includes a component mounting plate attached to the motor housing and an intermediate plate coupled to the component mounting plate by the first pair of spherical connection joints. The intermediate plate is also coupled to the boom by the second pair of spherical connection joints.

A pivotally flexible motor mount for a rotary trenching tool allows for increased life of the overall system. A flexible motor mount includes a universal pivot arrangement that allows a motor housing to universally pivot relative to a boom to accommodate misalignment between a motor shaft axis and a rock wheel rotation axis. The flexible motor mount also includes a first pair of spherical connection joints aligned along a first pivot axis and a second pair of spherical connection joints aligned along a second pivot axis. The first and second pivot axes are generally perpendicular relative to one another. The flexible motor mount further includes a component mounting plate attached to the motor housing and an intermediate plate coupled to the component mounting plate by the first pair of spherical connection joints. The intermediate plate is also coupled to the boom by the second pair of spherical connection joints.

The invention relates to a drilling machine (10) including a grab frame (12) which comprises a body (16) extending along a longitudinal direction (L), a movable member (32), a first arm (34) pivotable relative to the movable member, a second arm (36) pivotable relative to the movable member (32), the second arm having a lower end part, at least one actuator device (37) connected to the body to move at least the first arm (34) relative to the body; The invention is characterized in that said drilling machine (10) includes a removable milling device (100) including a first dismountable securing device (120) for removably fixing the support (110) to the body (16), and a second dismountable securing device (150) for removably fixing the support (110) to the first arm, whereby the milling device can be easily dismounted from the frame.

The invention relates to a drilling machine (10) including a grab frame (12) which comprises a body (16) extending along a longitudinal direction (L), a movable member (32), a first arm (34) pivotable relative to the movable member, a second arm (36) pivotable relative to the movable member (32), the second arm having a lower end part, at least one actuator device (37) connected to the body to move at least the first arm (34) relative to the body; The invention is characterized in that said drilling machine (10) includes a removable milling device (100) including a first dismountable securing device (120) for removably fixing the support (110) to the body (16), and a second dismountable securing device (150) for removably fixing the support (110) to the first arm, whereby the milling device can be easily dismounted from the frame.

The invention relates to a drilling machine (10) for making an excavation in ground in a drilling direction, said drilling machine comprising: an anchor module (12) having an anchor device for preventing the anchor module from moving in the drilling direction relative to the ground by bearing against one of the walls of the excavation; a drilling module (20) provided with cutter members connected to the anchor module while being movable in translation relative to the anchor module; and movement means (35) for moving the cutter members in translation relative to the anchor module.

The drilling module is also hinged relative to the anchor module, and the drilling machine comprises first path correction means (40) for causing the drilling module to pivot relative to the anchor module about a pivot axis (X) perpendicular to the drilling direction.

A trench wall apparatus includes a base frame held at its top end by a holding means held by at least one soil excavation means, which is positioned at a bottom end of the base frame. When soil is excavated while forming the trench, the trench wall apparatus is held by a clamping means that includes at least two clamping elements on opposite sides extended laterally by at least one actuating cylinder, whereby at least one part of the trench wall apparatus is clamped in the trench, and a pressing means applies a pressing force on the at least one soil excavation means. The clamping elements and clamping cylinder are positioned on an intermediate frame displaceably mounted along the base frame. The intermediate frame is clamped and fixed to the ground by the clamping means. The base frame having the soil excavation means is pressed downward by the pressing means.

A trench wall apparatus includes a base frame held at its top end by a holding means held by at least one soil excavation means, which is positioned at a bottom end of the base frame. When soil is excavated while forming the trench, the trench wall apparatus is held by a clamping means that includes at least two clamping elements on opposite sides extended laterally by at least one actuating cylinder, whereby at least one part of the trench wall apparatus is clamped in the trench, and a pressing means applies a pressing force on the at least one soil excavation means. The clamping elements and clamping cylinder are positioned on an intermediate frame displaceably mounted along the base frame. The intermediate frame is clamped and fixed to the ground by the clamping means. The base frame having the soil excavation means is pressed downward by the pressing means.

The invention relates to a method for working the soil and an associated construction machine, which comprises at least one rotating drive unit for rotationally driving a tool for working the soil and at least one feed unit, with which the tool for working the soil is placed into the ground. According to the invention, a control and analysis unit is provided, with which when working the soil at least one input variable of the rotating drive unit and/or the feed unit are read and saved, at least one resulting output parameter is read and saved at the tool for working the soil, and the at least one input variable is compared to the resulting output parameter, whereby a soil working value is ascertained and saved.

The invention relates to a method for working the soil and an associated construction machine, which comprises at least one rotating drive unit for rotationally driving a tool for working the soil and at least one feed unit, with which the tool for working the soil is placed into the ground. According to the invention, a control and analysis unit is provided, with which when working the soil at least one input variable of the rotating drive unit and/or the feed unit are read and saved, at least one resulting output parameter is read and saved at the tool for working the soil, and the at least one input variable is compared to the resulting output parameter, whereby a soil working value is ascertained and saved.

The invention relates to a boring machine (10) including: a frame (12) bearing at least a first rotary milling drum, at least a first arm (40) movable with respect to the body (16); at least a first support (64) bearing the first milling drum (60), the first support (64) being connected to the lower end part (40b) of the first arm (40), an actuating device (50) to displace at least the first arm (40) with respect to the body (16). The invention is characterized by the fact that the body further includes: a translational guiding device (30) extending along the longitudinal direction, the boring machine further comprising a movable member displaceable with respect to the body along the longitudinal direction while being guided by the translational guiding device (30), the first arm (40) being mounted pivotably on the movable member (34).