A cutter bit assembly for use in underground mining, road grading, and the like includes a water spray assembly having a water nozzle in a first chamber that discharges a water spray through an air gap and into the open end of a second chamber facing the air gap. Air is drawn into the water spray entering the second chamber from the air gap to produce a finer spray that is discharged from a second open end of the second chamber. The water spray helps clear the second chamber of any dirt or debris drawn by the air into the second chamber.

A mobile volumetric concrete mixing system includes a suction system that vacuums up trench spoils while a trench is being cut. These trench spoils are then screened on-site for particle size to be reused and mixed with water, cement, and/or other admixtures at an auger mixer to form a backfill mixture. This backfill mixture may then be loaded into a hopper that continuously agitates the mixture so that the mixture does not harden before pouring. The agitating hopper is coupled to a discharge chute of the auger mixer and includes one or more augers disposed at various orientations that the backfill mixture is channeled through. From the agitating hopper, the backfill mixture is channeled to an applicator that moves along the trench and that enables the mixture to be quickly poured into the trench with little clean-up required.

Arrangements for diverting and removing spoil created when a microtrench is being cut. The disclosed arrangements divert the debris and dust away from the microtrench during the cutting process. In optional embodiments, a spoil vacuum system is used to remove the dust particles during the debris diversion process. In further optional embodiments, a microtrench slot cleaning tool and slot vacuum system may be used. The microtrencher can be mounted on a skid-steer loader or a similar support vehicle.

Bio-derived glycerides formed from a reaction between waste glycerol and biodegradable or bio-derived fatty acid esters such as crude biodiesel or soybean oil triglycerides are useful as dust suppressants, binders, and stabilizing agents.

A drag box or box scraper for scraping and moving loose materials on a surface uses a three point hitch having a pivotally mounted blade box holding a scraping blade attached thereto to allow the scraping blade to pivot to ride over rigid objects, such as man hole covers during road preparations. Attached water tanks add weight to the drag box and feeds a water sprayer used for dust suppression.

A hydraulic control for an attachment on a work vehicle. The attachment is mounted on the chassis of the work vehicle and movable between a first position and a second position. A hydraulic cylinder is operable to power movement of the attachment. A fluid circuit communicates with the hydraulic cylinder and is configured to carry hydraulic fluid. A fluid reservoir is in communication with the fluid circuit. Accumulators that are in communication with the fluid circuit automatically store and release hydraulic fluid in response to movement of the attachment. A valve assembly controls fluid communication between the fluid reservoir and the fluid circuit in response to movement of the attachment to its second position.

The self-propelled high-performance shot-peening machine combined with a scarifying machine, for the treatment of coatings surfaces of bituminous conglomerate, asphalt, concrete or metal, is composed of a shot-peening unit (A-A), a suction, filtering, separation and storage unit (B-B), a scarifying unit (C-C) and a mechanic-magnetic unit (d-D) coupled together.

It comes typically to solve the problem of the removal of the new typologies of drop or lamellar road markings, with subsequent regeneration of the macro and micro roughness of the road coating,

subjecting the surface to be treated to two treatmentsintegrated milling and shot-peeningby a single pass, adapting itself to the road profile and guaranteeing to remove only the protruding part of the road markings, subsequently immediately regenerating the roughness and microroughness of said surface, noticeably reducing the critical factor of the working time, eliminating the possibility of error in the application of the treatment.

The basic principle consists in utilizing the six-drum scarifying machine 20, 20 only to remove the protruding parts without breaking into the road coating, the number of rollers of the drums 21, 22, 23, 24, 25, 26 and the rotation speed being automatically chosen by the programme to optimize results and working speed; same principle applies to the shot-peening, where the rotation speed and the quantity of abrasive can vary, aiming to the highest yield and speed, the whole managed by a system software implemented by an electric device like PLC, Tablet, Smartphone or Wi-Fi Server-Router.

It solves also the problem of the recycling of the grit by its overheating with sticking of the bituminous, gummy materials and others, performing their removal by a single pass and their final decontamination from the stuck bituminous materials C in a further subsequent sieve 7 with preliminary cooling by intercooler 7, 7, the avoid their deformation and ovalization for a correct recycling D, 1, 1 and reuse of the microspheres 1, 2, 2.

The technology has been applied to a road lorry with three to five axes, with the aim to have a vehicle allowed to free circulation on the roads to reach the possible yards, airports and so on and to be able to work in moving yards without closing the lane or the section where it is necessary to remove the road markings and remake them immediately after.

An autonomous self-propelled unit (D-D) with suction, storage and housing of the magnetic group completes the regeneration and cleaning action removing from the surface coating any grit possibly dispersed and not recovered by the shot-peeni

A drilling machine for boring holes in a slab having a hole formed therein includes a main frame to which a drill gang assembly is rotatably and telescopingly mounted. The drill gang assembly includes a drill support frame supporting a plurality of drills in parallel spaced alignment. The drill gang assembly is mounted on a mast which may be rotated three hundred and sixty degrees relative to the main frame about a vertical axis up to at least one hundred and eighty degrees. The mast slides laterally relative to the main frame and the wheels supporting the main frame telescope laterally so the wheels can be supported on an adjacent lane or shoulder when the drill gang assembly is supported over a hole extending the width of a lane of a road forming by the slab.

A spray system for a cold planer machine includes a spray bank disposed inside a housing and arranged to spray fluid directed at a drum and a spray controller. The spray controller is configured to receive an indication of either one of a milling operation and a plunge cut operation is occurring and actuate fluid spray via the spray bank based at least in part on the received indication.

A cold planer and method for ventilating the cold planer. The cold planer comprises a frame, a hood, a milling drum and a ventilation system. The hood is disposed under the frame and defines a cutting chamber. A milling drum is disposed inside the cutting chamber under the hood. The ventilation system comprises a cutting chamber port, a boost fan, a settling box and a main fan. The cutting chamber port extends through the hood. The boost fan is configured to generate a siphon that draws airflow from inside the cutting chamber through the cutting chamber port. The settling box is configured to cause particles to drop out of airflow. The settling box is in fluid communication with the cutting chamber port. The main fan is configured to draw airflow from the settling box and a region in front of the hood and vent it away from the cold planer.