Drilling rig URB 2A2 based on LHT-55

Characteristics of LHT-55

dimensions
Length 6400
Width 2400
Height 3 400
Track 1 690
Ground clearance 550
Structural weight, kg 12,300
Engine
Model SMD-20T
Diesel power, hp 127
Fuel tank capacity, l. 140
Transmission
Type Mechanical
The gearbox is 5-speed with constant mesh gears, 5 forward gears, 1 reverse.
Speed range, km/h 2.0 - 11.0
Rotation mechanisms Multi-disc, dry friction, permanently closed
Service brake Two dry friction band brakes on the swing mechanism drums
Final drives Single-stage helical gearbox in a one-piece housing
Chassis system
Drive wheels Single-crown cast
Number of teeth 11
Tooth pitch, mm 134
Track width, mm 440 (550)
The highest average specific ground pressure (without load) 0.049
Hydraulic system of technological equipment
Pump NSh-32U-3-L on the engine (NSH-50)
Hydraulic tank capacity, l. 56
Electrical equipment
Rated voltage, V 12
Generator With built-in rectifier and voltage regulator unit
Rechargeable battery 6ST75AM
Starter starting engine ST362A
Cabin
A safety frame that meets the requirements of standards, vibration-noise-thermal insulation, systems for normalizing the microclimate in winter and summer.
Seat adjustable in length

Characteristics of URB 2A2

Drilling depth, m
– Geophysical wells 300
– Structural wells 300
– When blowing the face with air 60
– When drilling with augers 60
Initial drilling diameter, mm 350
Final drilling diameter, mm
– For geophysical wells 118
– For structural wells 93
Drilling diameter, mm
– When blowing the face with air 150
– When drilling with augers 150
Rotator Reinforced 4000 Nm. What ensures high-performance drilling with large-diameter core pipes
Type Hydraulic movable
Rotation speed, rpm
– 1 speed 70
– 2 speed 140
Stroke, mm 5200
Moment of force, Nm (kgf)
– 1 speed 4000 (400)
– 2nd speed 2000 (200)
Rotator drive type Two high-torque hydraulic motors
Operating pressure in the system MPa/Bar/atm 16/160/160
Mechanism for lowering, lifting and feeding tools Hydraulic jack with pulley system
Load capacity, N (kgf) 45000 (4500)
Downward feed force, N (kgf) 26000 (2600)
Tool lifting speed, m/s 0 … 1.1
Mast, reinforced with a truss structure, shortened (for a 3000mm boom)
Type Welded with hydraulic support jacks
Reinforced carriage with 12 rollers
Load capacity, N (kgf) 60000 (6000)
Drill pipes (recommended)
Diameter, mm 50 (63.5)
Length, mm 3000