XCMG XR420E Rotary Drilling Rig

XCMG XR420E rotary drilling rig is the company’s new generation E series large tonnage product

Based on the mature XR400E, it adopts the latest platform technology to increase engine power and system flow, increase the lifting force of the main coil, and achieve operational efficiency improvement; Optimize large structural components, such as rotary platforms with thickened I-beams, segmented thick drilling masts, vertical pin power head brackets, and 575 drill pipe configurations, to achieve improved operational stability and reliability.

This drilling rig is widely used for boring operations for concrete pouring piles in the construction of highways, railways, bridges, and large venues, making it especially suitable for civil and industrial building projects. It employs either interlocking or friction Kelly bars in conjunction with sand-grab buckets, barrel drills, or short spiral augers for rotational drilling. Additionally, it can be outfitted with long spirals, dual power heads, casing oscillators, and other working devices for construction.

Highlights of the XCMG XR420E Rotary Drilling Rig

1. Optimized Double Arm Luffing Mechanism: The double arm luffing mechanism of the rotary drilling rig has been upgraded and optimized, with the hinge point position reasonably adjusted. This optimized design effectively balances the construction stability of the rotary drilling rig during operation and the convenience of transportation during transition, greatly improving the overall practicality of the equipment.

2. Specialized Stable Chassis: It adopts a specialized H-shaped hydraulic telescopic track chassis designed exclusively for rotary drilling rigs, equipped with large-diameter slewing bearings. The integrated chassis structure not only ensures strong working stability of the whole machine during high-intensity drilling construction but also facilitates quick and convenient transportation and transfer, saving transition time.

3. High-Power and Energy-Saving Engine: Equipped with the latest platform high-pressure common rail 15L Cummins engine, the rotary drilling rig delivers strong power output to meet the high-load construction needs. At the same time, it effectively reduces fuel consumption and operating noise, achieving the dual effects of energy saving and environmental protection, and lowering daily operation costs.

4. Extended Steel Wire Rope Service Life: Both the main and auxiliary winches of the rotary drilling rig adopt single-row rope technology. Compared with traditional multi-layer rope winches, this technology can extend the service life of the steel wire rope by 2-4 times, significantly reducing the frequency of rope replacement and overall operating costs of the equipment.

5. Efficient and Stable Hydraulic System: The hydraulic system of the rotary drilling rig adopts load sensing technology, combined with total power control and limit power control technology, which greatly improves the efficiency and energy-saving performance of the hydraulic system. It is equipped with an independent radiator system, featuring high heat dissipation efficiency, which ensures the stable operation of the hydraulic system even under long-term high-load construction conditions.

6. Geology-Adaptable Power Head: The power head of the rotary drilling rig is designed with multiple gear control modes. Users can flexibly select the corresponding working mode according to different geological conditions (such as cohesive soil, sandy soil, and bedrock), which not only improves construction efficiency but also further reduces fuel consumption, adapting to diverse construction scenarios.

7. Intelligent and Safe Control System: The rotary drilling rig is equipped with an advanced intelligent control system, which realizes multiple practical functions including automatic adjustment and display of drilling mast verticality, automatic rotation, automatic soil throwing, automatic lifting and pouring of long spiral construction method, and pile type display. The bus panel design effectively prevents misoperation, making the operation process safer and more efficient.

8. Convenient Maintenance Design: A centralized lubrication system is standard-equipped on the rotary drilling rig, which simplifies the daily maintenance process of the equipment, makes maintenance more convenient and efficient, and effectively improves the working reliability of the whole machine, reducing the probability of equipment failure during construction.

XCMG XR420E Main technical parameters

XCMG XR420E Technology

1. XCMG XR420E Chassis

Equipped with XCMG TDP series rotary drilling rig specialized retractable track chassis, with high structural strength, large diameter heavy-duty rotary support, and ultra strong stability. The most mature chassis technology for rotary drilling rigs in the industry, with over 2000 experience in the application of piling equipment.

2、XCMG XR420E Engine system

The engine is selected as an imported Cummins electronically controlled turbocharged engine, which has low fuel consumption and meets Euro III emission standards. It can also be equipped with a four stage emission standard, which is energy-saving and environmentally friendly; Sufficient power reserves to meet the requirements of high-altitude construction.

3. XCMG XR420E Hydraulic system

The hydraulic main system adopts load sensitive (LUDV) control technology, with fast response and optimal composite action control performance. It adopts constant power control for the main pump, resulting in high construction efficiency. The auxiliary system adopts load sensitive control technology, which is energy-saving and efficient.

4、XCMG XR420E Power head

Adopting a vertical pin connection type power box and bracket, it has high reliability and is easy to disassemble and assemble quickly; The lower cover of the box is designed with double-layer sealing, which has good sealing performance and long service life; Equipped with a casing driver as standard, the drilling rig has strong casing running ability.

5、XCMG XR420E Winch

The main and auxiliary winches both adopt XCMG’s industry-leading single row rope technology, effectively solving the problem of wire rope wear and improving the service life of wire ropes by 2-4 times. The main winch meets the operating conditions of M6-T5.

Main winch

Auxiliary winch

Pressure winch (optional)

6.XCMG XR420E Drill pipe

The XR240E rotary drilling rig can be matched with machine locking rods or friction rods. Machine lock rods are suitable for rock layers, and friction rods are suitable for soil layers. The drill rods have four machine lock rods, five friction rods, and six friction rods, respectively.

Drilling depth (see table below)      

7. XCMG XR420E Drilling mast

The box shaped structure design made of high-strength materials combines strength and rigidity, combined with a double arm large parallelogram variable amplitude mechanism, providing a wider range and angle of support for more stable operation.

8. XCMG XR420E Driver’s cab

A noise proof cab with FOPS function, equipped with cold and warm air conditioning, internal and external lighting, windshield wipers with water spray function, etc. Large skylight design, good visibility; The protective net can be opened for easy cleaning. The seat, display screen, and monitoring screen can all be adjusted to provide a comfortable working environment for the operator.

9. XCMG XR420E Electrical system

Adopting Rexroth RC30 series controllers and Hesman 12 inch displays; Display page layout, fully considering humanization and convenience, hierarchical processing, data calibration, parameter modification, etc. require different permissions; The inclination angle, pressure and other sensors use imported components; The wiring harness adopts weaving technology, which is waterproof and wear-resistant; Add rubber and other small accessories to the connectors to ensure waterproof performance.

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