UNAC-22TRR
2Pages

UNAC RAIL 22TRR ROAD-RAIL EXCAVATOR MANUFACTURER OF HEAVY DUTY TRENCHERS • FORESTRY MULCHING VEHICLES • MILITARY DOZERS • ROAD-RAIL SYSTEMS • SNOW CLEARERS Purpose The 22TRR is a high-capacity road-rail excavator that can perform earthwork tasks directly from a railroad track with great freedom of movement and with a large lifting capacity. Description The 22TRR is a self-propelled vehicle with hydrostatic drive. On the road, this excavator has an excellent turning radius that allows easy manoeuvring and facilitates getting on the rails. On rails, this excavator moves thanks to a direct hydrostatic drive that does not involve any direct contact with the tyres for precise movements with speeds up to 23 km/h. This vehicle is initially a Caterpillar excavator on which is maintained the same boom kinematics as the original machine and consequently modied in order to benet from: • An increase and a rearranging of counterweights to satisfy railway standards and to enable it to lift heavy loads, • Two UNAC-HDTP motorized rail axles for hydrostatic driving and braking, • A boom safety system designed to have limited movement when working under live wires, • A turret rotation movement that can be blocked in order to secure trafc on an adjacent track, • A sophisticated system to see blind spots and to alert the operator of overloads or toppling risks, • A double cab that can carry a passenger who can also react in case the operator has an ailment. Strengths • Maintains the original excavator’s lifting and earthwork capacities. The R/R excavator can lift 6 T to a distance of up to 4,50 m from the track centre, in an unfavourable cant situation and can therefore handle heavy equipment or also work off-track, • Possibility of earthmoving and lifting from a track to the opposite side of the adjacent track, • Uses a very secure system which satises the most stringent railway standards, authorizing work under live wires or where there is an adjacent track that is open to trafc, • Electronic security system for the boom’s kinematics (different contact wire height levels) and for the rotation depending on a track’s status (cant and slope, adjacent track side, etc.), as well as a mechanical blocking system, • Ergonomic controls in a Luxury/ Comfort Caterpillar cab that combines comfort, soundproong, air conditioning, visibility, and ergonomics, • Possibility of carrying standard excavator attachments, even heavy ones, or railwayspecic attachments, • Very exible axles that help to reduce risks of toppling and can tolerate high twists of tracks, • Can work in both directions of a track thanks to the turret’s full rotation and rear-view cameras, • The Caterpillar initial warranty is ofcially maintained. The excavator benets from the UNAC after-sales service and from Caterpillar’s dynamic after-sales network, • Approved for travel on the most demanding railway networks. www.unac.fr Avenue de Camargue • Zone Industrielle B.P. 9 - 30310 VERGÈZE - FRANCE T. +33 (0)4 66 35 02 53 • F. +33 (0)4 66 35 09 32 • info@unac.fr

ROAD-RAIL EXCAVATOR 22TRR ENGINE - Diesel CATERPILLAR C4.4, ACERT technology - Gross horsepower 147 hp / 108 kW at 2 000 rpm. ROAD TRANSMISSION - RAIL TRANSMISSION - Hydrostatic, 4 wheel drive - Central hydraulic motor on each axle: POCLAIN with variable displacement capacity - Speed: from 0 to 23 km/h. HYDRAULIC CIRCUIT - Two serial pumps and two pumps on PTO - Specic lifting mode: +7% of lifting capacity - Hydraulic tank: 135 L, 220 L circuit. STEERING - Hydraulic steering for 2 steering wheels - Mini turning radius: 6,30 m. BRAKING • Road: the drive axles are equipped with multi-disk...