ZR420U

Rotary Drilling Rig

ZR420U

ZR420U rotary drilling rig is a typical model of our U (green) series products, which is our technical achievement made combining with many years of design and manufacturing experience to meet the market demand. With excellent product quality, strong construction ability, superior lifting performance, and comfortable operation experience, it is active in all fields of infrastructure construction in China. This product is suitable for operation and installation projects at railways, elevated railways, highways, bridges, tunnels, ports and docks, construction sites and other places.

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2500 mm

Max.drilling diameter

110/72 m

Max.drilling depth

430 kN ·m

Max. output torque

4~28 rpm

Rotary speed range

Advantage introduction

  • Green:Engine emission standard upgraded to EuroV, more environmentally friendly.
  • Long crowd stroke: The main feature of the crowd winch rotary drilling rig is that the rotary drive has a long crowd stroke, which can push down a pile casing of more than ten meters as a whole, and then drill holes and cast piles. It can provide a complete set of construction schemes under complex geological conditions, such as underground rivers and underground karst caves.
  • Strong ability in large pile construction: High power, large displacement, high torque and high crowd force provide the products with strong power in the construction of large-diameter pile holes, hard rocks and deep piles. Solid and steady-going design concept gives full play to the strong power. Strong hoisting capacity of the hoisting winch ensures the safety and high efficiency of drilling tool hoisting in large pile construction.
  • High construction stability: With large cross-section mast, high-strength double movable arm, large cross-section reinforced turntable, super-large diameter heavy slewing bearing and low center of gravity design, the products are rigid and reliable, and have little shaking during construction due to its high stability.
  • Strong power:The new generation of high-power engine has strong power, less emissions and low fuel consumption; Equipped with a large-displacement rotary drive motor and large-flow pump valves, with high speed and large torque ensured
  • Smooth operation: Upgraded main valve function, control program, and compound actions offer more smooth traveling, hoisting and swinging
  • Convenient transportation: The mast can be folded, and the cathead is folded with one button without removing the mast support; the height of the whole machine is low, and the transfer transportation is convenient; the arrangement of the winch crowding pulley block and the rotary drive pulley block are optimized to simplify the assembly/disassembly of the wire rope. When the transportation state is switched, it is not necessary to assemble/disassemble the wire rope.
  • Intelligent control: It is equipped with crowd adaptive capability, floating pedal, wire rope pretightening, 720° around view monitoring, equipment information push to the mobile APP
  • Appearance quality : Better detail design in new cab market, combined counterweight, guardrail, pedal, mast pipeline double-row arrangement and pipeline support
  • Upgraded maintenance: Large maintenance space for hoisting winches, main valves and slewing mechanism. Centralized maintenance of machine filters and firewood filters. Additional high-precision bypass filters and magnetic bars, and hydraulic system that kept clean for a long time
Driliing
Driliing
Max.drilling diameter 2500mm
Max.drilling depth 110/72m
Rotary drive
Crowd system
Main winch
Aux.winch
Inclination angle of mast
Engine
Overall main machine