Equipment (10) for excavating solid surfaces S such as for example made of asphalt or cement or similar solid material, in particular for obtaining or excavating trenches in said solid surfaces, said equipment (10) comprising working or excavating means (16) rotatably supported by a main frame (11), and a setting frame (30) which defines at least one contact portion (33) substantially flat and adapted to be put into contact with a corresponding portion of the surface S to be worked on, wherein the position of said setting frame (30) with respect to said main supporting frame (11) may be set so as to set the working depth K of said working means (16); wherein the said setting frame (30) is rotatably not constrained to said main supporting frame (11) in such a way that the setting frame, regardless of the particular working conditions, always perfectly lies on the surface to be worked on S.

Equipment (10) for excavating solid surfaces S such as for example made of asphalt or cement or similar solid material, in particular for obtaining or excavating trenches in said solid surfaces, said equipment (10) comprising working or excavating means (16) rotatably supported by a main frame (11), and a setting frame (30) which defines at least one contact portion (33) substantially flat and adapted to be put into contact with a corresponding portion of the surface S to be worked on, wherein the position of said setting frame (30) with respect to said main supporting frame (11) may be set so as to set the working depth K of said working means (16); wherein the said setting frame (30) is rotatably not constrained to said main supporting frame (11) in such a way that the setting frame, regardless of the particular working conditions, always perfectly lies on the surface to be worked on S.

A system for uncovering a trench. The system comprises several subsystems, including a work machine and a frame for providing a seal with the surface to be trenched with a saw blade contained therein. The blade is supported on a hub which is slidably movable relative to the frame by operation of a linear actuator, which may be a hydraulic cylinder or the like. The vertical location of the blade within the frame is continuously adjustable to create a deeper or shallower trench. A monitoring system is provided to monitor the vertical location from an operator station.

A system for uncovering a trench. The system comprises several subsystems, including a work machine and a frame for providing a seal with the surface to be trenched with a saw blade contained therein. The blade is supported on a hub which is slidably movable relative to the frame by operation of a linear actuator, which may be a hydraulic cylinder or the like. The vertical location of the blade within the frame is continuously adjustable to create a deeper or shallower trench. A monitoring system is provided to monitor the vertical location from an operator station.

A roadway access hole drill for cutting a square or rectangular access hole in a roadway having a first saw opposing a second saw and a third saw opposing a fourth saw. A method of cutting a microtrench in which the buried utility is exposed by opening a square or rectangular access hole in a roadway above the buried utility using the roadway access hole drill that is controlled by a computer system connected to an under-roadway detection unit that detects a buried utility and stops movement of the drill to avoid damaging the buried utility.

The present invention relates to a laying machine for laying at least one flexible casing or tube, cable or wire including: a blade arrangement for making a trench in the ground, a consolidation and laying means being arranged behind the blade arrangement, for clearing and safe-guarding the trench from collapsing while laying at least one flexible casing or tube, cable or wire into the trench. A blade assembly comprising compartments for cooling fluid and air.

The present invention relates to a laying machine for laying at least one flexible casing or tube, cable or wire including: a blade arrangement for making a trench in the ground, a consolidation and laying means being arranged behind the blade arrangement, for clearing and safe-guarding the trench from collapsing while laying at least one flexible casing or tube, cable or wire into the trench. A blade assembly comprising compartments for cooling fluid and air.

The invention relates to a drive device for a construction machine, in particular for a trench cutter, comprising a connection support and a wheel support, which is rotatably supported on the connection support via at least one rolling bearing and which can be rotationally driven relative to the connection support by a drive motor via at least one gear stage, wherein the gear wheel of the gear stage, said wheel being arranged within the connection support and meshing or being in rolling engagement with at least one other gear wheel, is movably and/or tiltably supported in the radial direction relative to the connection support by a flexible and/or movable bearing element so as to be rotationally fixed to the connection support and/or to a bearing shield rigidly connected thereto.

The invention relates to a drive device for a construction machine, in particular for a trench cutter, comprising a connection support and a wheel support, which is rotatably supported on the connection support via at least one rolling bearing and which can be rotationally driven relative to the connection support by a drive motor via at least one gear stage, wherein the gear wheel of the gear stage, said wheel being arranged within the connection support and meshing or being in rolling engagement with at least one other gear wheel, is movably and/or tiltably supported in the radial direction relative to the connection support by a flexible and/or movable bearing element so as to be rotationally fixed to the connection support and/or to a bearing shield rigidly connected thereto.

The invention relates to a method of installing a cutting wheel at a cutting wheel transmission of a slurry wall cutter, wherein the cutting wheel transmission and the cutting wheel each have fastening means for fastening the cutting wheel to the cutting wheel transmission and wherein at least two spacer elements are arranged at the cutting wheel transmission. The method in accordance with the invention comprises the steps (i) guiding the cutting wheel to the cutting wheel transmission, (ii) roughly aligning the cutting wheel relative to the cutting wheel transmission so that the fastening means of the cutting wheel and the cutting wheel transmission are opposite one another, without contacting one another in so doing, (iii) connecting a respective one centering element to the spacer elements, (iv) finely aligning the cutting wheel relative to the spacer elements by means of the centering elements, with the fastening means still not contacting one another, and (v) displacing the cutting wheel relative to the spacer elements by means of the centering elements so that the fastening means come into engagement with one another. The invention further relates to a kit for a slurry wall cutter and to a slurry wall cutter for the carrying out of the method in accordance with the invention.