A microtrencher having a vacuum system configured to clean spoil from a microtrench having a rotating brush. A method of using the microtrencher to cut a microtrench in a roadway and using the vacuum system to clean spoil from the roadway and microtrench.

A microtrencher having a vacuum system configured to clean spoil from a microtrench having a rotating brush. A method of using the microtrencher to cut a microtrench in a roadway and using the vacuum system to clean spoil from the roadway and microtrench.

The present invention relates to a core drill apparatus which is mounted to a working boom of an excavator so as to drill rock or a concrete structure and, more particularly, to a core drill apparatus for installation in an excavator, which comprises a ring gear and a plurality of elevation cylinders that are connected to and installed in a working support frame mounted to the end of a working boom of an excavator so as to rotate the working support frame, and at the same time, is configured to support the working frame while adjusting the height of the slope using the elevation cylinders when the working frame is supported on an inclined work surface. Therefore, the present invention enables a drilling bit provided in the working support frame to stably drill a structure regardless of the inclination of a work surface to be drilled, and can thus significantly improve the efficiency of a drilling operation.

The present invention relates to a core drill apparatus which is mounted to a working boom of an excavator so as to drill rock or a concrete structure and, more particularly, to a core drill apparatus for installation in an excavator, which comprises a ring gear and a plurality of elevation cylinders that are connected to and installed in a working support frame mounted to the end of a working boom of an excavator so as to rotate the working support frame, and at the same time, is configured to support the working frame while adjusting the height of the slope using the elevation cylinders when the working frame is supported on an inclined work surface. Therefore, the present invention enables a drilling bit provided in the working support frame to stably drill a structure regardless of the inclination of a work surface to be drilled, and can thus significantly improve the efficiency of a drilling operation.

The present invention relates to a hydraulic percussion device and a construction apparatus having the same, the hydraulic percussion device comprising: a cylinder; a piston; a backward port connecting a front chamber of the cylinder to a hydraulic source; a forward port formed on a rear chamber of the cylinder; a forward/backward valve for controlling the forward and backward movement of the piston; a control line for moving the forward/backward valve to a forward-movement location; a long-stroke port formed between the forward port and the backward port; a short-stroke port formed between the backward port on the cylinder and the long-stroke port; a shift valve disposed between the short-stroke port and the control line; a proximity sensor for detecting a bottom dead point of the piston upon the stroke on an object; and a controller for determining a striking condition on the basis of the detected bottom dead point, and transmitting a control signal to the shift valve.

The present invention relates to a hydraulic percussion device and a construction apparatus having the same, the hydraulic percussion device comprising: a cylinder; a piston; a backward port connecting a front chamber of the cylinder to a hydraulic source; a forward port formed on a rear chamber of the cylinder; a forward/backward valve for controlling the forward and backward movement of the piston; a control line for moving the forward/backward valve to a forward-movement location; a long-stroke port formed between the forward port and the backward port; a short-stroke port formed between the backward port on the cylinder and the long-stroke port; a shift valve disposed between the short-stroke port and the control line; a proximity sensor for detecting a bottom dead point of the piston upon the stroke on an object; and a controller for determining a striking condition on the basis of the detected bottom dead point, and transmitting a control signal to the shift valve.

A method of forming a structure includes a) excavating a material; b) homogenizing the material; c) ensuring aluminosilicate levels in the material; d) increasing alkaline levels of the material; e) foaming the material; and f) injecting the material onto a surface, wherein the material forms into a foam-like structure when injected.

A method of forming a structure includes a) excavating a material; b) homogenizing the material; c) ensuring aluminosilicate levels in the material; d) increasing alkaline levels of the material; e) foaming the material; and f) injecting the material onto a surface, wherein the material forms into a foam-like structure when injected.

The present disclosure is a lift attachment apparatus for construction and farm equipment, including a loader. In an embodiment of the disclosure, lift apparatus may include a frame including an attachment device configured to attach to a tilting plane of a loader having a forward facing loader arm, a pair of wheels connected to the frame, a first wheel of the pair of wheels located on a first side of the frame and a second wheel of the pair of wheels located on a second side of the frame. The lift attachment apparatus may further include a boom or forks connected directly or indirectly to the frame, wherein control of the boom or forks is provided by application of force to the attachment device by the forward facing loader arm in a downward direction to create lift and rotation of the tilting plane causing rotation of an end of the boom or forks about the first wheel and the second wheel.

A microtrencher having a vacuum system configured to clean spoil from a microtrench having a side shroud and a suction nozzle. A method of using the microtrencher to cut a microtrench in a roadway and using the vacuum system to clean spoil from the roadway and microtrench.