Dual electrohydraulic vehicle for tunnelling and roof reinforcement

Abstract

The present invention develops a dual electrohydraulic vehicle for development of tunnels and roof fortification, comprising both a front face drilling unit and a roof support and fortification unit. Furthermore, the electrohydraulic vehicle is composed of a front chassis consisting of a pair of wheels, positioning cylinders, an operator's cab and two telescopic arms mounted on such chassis and a rear chassis located behind the front chassis according to the direction of movement and consisting of a pair of wheels, positioning cylinders, two electrohydraulic units also called Power pack, an electric cable reel and a diesel engine, wherein both chassis are articulated to each other, of the jumbo type, by means of a vertical axle. This electro-hydraulic vehicle may also include a cartridge launcher tube and a semi-automatic bolt feeding system.

1 . A dual electrohydraulic vehicle with the capacity to perform the development of tunnels or front face drilling works as well as to perform roof fortification works, CHARACTERIZED IN THAT it includes
 a front face drilling unit which consists of a telescopic arm ( 31 ), a simple or telescopic beam ( 32 ), where the simple beam consists of a single having the necessary dimensions to use 10-, 12-, 14- or 16-foot drill rods and the telescopic beam consists of two beams assembled on top of each other with the ability to expand and contract, and a hydraulic drill ( 33 ) which moves along the beam ( 32 ) when the front-end is drilled; and   a roof support and fortification unit consisting of a second telescopic arm ( 34 ), two guide beams ( 44 ) arranged in parallel where the first one supports and moves the drilling equipment capable of performing mechanized drilling and the second guide beam supports and moves the bolting equipment in charge of inserting a bolt in the previously mechanized hole.   
     
     
         2 . The dual electrohydraulic vehicle of  claim 1 , characterized in that it comprises
 a front chassis, wherein the front chassis consists of a pair of wheels ( 37 ), positioning cylinders ( 42 ), an operator's cab ( 41 ), a telescopic arm capable of performing front face drilling or tunneling works ( 31 ), and a telescopic arm capable of performing roof support and fortification ( 34 ), mounted on that chassis; and   a rear chassis located to the rear of the front chassis according to the direction of movement, where the rear chassis is made up of a pair of wheels ( 37 ), positioning cylinders ( 43 ), two electro-hydraulic units also called power packs, an electric cable reel ( 38 ), and a diesel engine ( 36 ) for moving the vehicle,   
       wherein both chassis are articulated to each other, of the jumbo type, by means of a vertical axle ( 30 ). 
     
     
         3 . The dual electro-hydraulic vehicle of  claim 1 , characterized in that the fortification and support unit contains a cartridge launcher tube, whose function is to inject a resin and cement cartridge into the previously drilled hole, and then insert a bolt. 
     
     
         4 . The dual electro-hydraulic vehicle of  claim 1 , characterized in that the fortification and support unit contains a semi-automatic bolt feeding system ( 40 ) as well, which automates the operators process of inserting one bolt per working cycle.