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XZ450
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Product Introduction
The XZ450 horizontal directional drilling rig, with its powerful engine, advanced hydraulic system and humanized design, has become the mainstream choice in the field of trenchless construction. Its high efficiency, reliability and wide adaptability can significantly reduce construction costs and shorten the construction period, making it an ideal equipment for municipal engineering, energy construction and other projects. The XZ450Plus version further enhances the capacity for laying large-diameter pipes, meeting the demands of the high-end market.
Product Advantage
* Pluralities of advanced control technologies are adopted, including the PLC control, electro-hydraulic proportion control, load sensitive control, etc.
* The pipe automatic disassembly and assembly device can improve the working efficiency, relieves the labor intensity and manual error operation of the operators, and reduces the construction personnel and the construction cost.
* Automatic anchor: The down and the up of the anchor is driven by hydraulics. The anchor is great in force and is easy and convenient to operate.
* The dual-speed spindle drive is operated with low speed when drilling and dragging back to ensure smooth construction, and can speed up to slide with 2 times of speed to reduce the auxiliary time and improve the working efficiency when returning and disassembling the drilling rod with empty loads.
* The engine has the turbine torque increment characteristic, which can instantly increase the power to ensure the drilling power when coming across the complex geology.
Technical Parameters
| Model | Unit | XZ450 |
| Engine | Cummins | |
| Rated power | kW | 194 |
| Push-pull | Rack and pinion | |
| Max. pullback/thrusting | kN | 450/450 |
| Spindle torque (max) | N.m | 17000 |
| Spindle speed | r/min | 0-135 |
| Taeling speed of power head | m/min | 0-38 |
| Backreaming diameter | mm | 1000 |
| Pipe length(single) | m | 4.5 |
| Pipe diameter | mm | 89 |
| Entry angle | ° | 10-20 |
| Mud flow rate (max) | L/min | 500 |
| Mud pressure (max) | bar | 10 |
| Overall weight | T | 18 |
| Dimension (L*W*H) | mm | 8960*2480*2570 |
Product Uses
Construction scenarios: Widely used for underground pipeline laying across highways, railways, rivers and busy urban areas, supporting various types of pipelines such as telecommunications, gas, water supply and drainage. The working environment temperature range is from -10 ℃ to + 45℃, and it is suitable for most non-hard rock areas at home and abroad.
Product Operate Guide
Before operation, preparations should be made: check the engine oil and hydraulic oil levels as well as the sealing of pipelines, conduct non-destructive testing of drilling tools and tighten the threads, and prepare wall protection mud according to the stratum. After the drilling rig is in place, level it so that the center line coincides with the crossing line, and test the signals of the guidance system.
The operation is divided into three steps: Drill the guide hole along the designed trajectory, select a three-cone drill bit for the rock formation, and strictly control the drilling pressure and rotational speed. Graded hole expansion, adjust the slurry pump volume to 450L/min for chip carrying and wall protection; The backdrag force is controlled within 630kN, and the continuous circulation of mud reduces drag.
In terms of safety, operators should wear protective equipment. Warning signs should be set up in the drill pipe area. In case of stuck drill, drilling should be stopped immediately and 10MPa high-pressure mud should be injected for treatment. Clean the equipment daily, replace the hydraulic filter element and gear oil regularly, and follow the official manual for operation.
FAQ
A: It is recommended that the hydraulic oil be replaced every 250 to 300 hours, and the return oil filter element be replaced simultaneously. The diesel filter should be replaced every 50 hours. The oil temperature should be controlled at around 60℃. Overheating will reduce the viscosity of the oil and accelerate the wear of components. It is necessary to regularly clean the dust accumulated on the radiator to ensure heat dissipation. Failure to maintain on time may lead to weak drilling and hydraulic system failure.
A: A combination of "three-cone drill bit + power drill tool + non-magnetic drill collar" should be adopted. During drilling, switch to a low speed (0-60 RPM), keep the drilling pressure within 70% of the equipment's rated value, and adjust the mud pump flow rate to 450L/min for chip carrying and wall protection. Reaming should be carried out in stages, with each diameter increment not exceeding 150mm. A rotary cutter reamer is preferred.
A: If the drill gets stuck, stop drilling immediately. Do not forcibly pull. Alternately apply ±50kN of push-pull force, and at the same time inject 10MPa of high-pressure mud to lubricate the hole wall. If the mud pump fails to pressurize, first check whether the suction pipe is blocked or the impeller is worn. Clean the pipeline or replace the components before starting. In case of abnormal noise, the machine should be stopped to inspect the bearings and gearboxes. Only after the faults are eliminated can the operation resume.
A: It supports the installation of semi-automatic or automatic drill pipe unloading devices, which is an official optional configuration. Mud anti-freezing systems and automatic lubrication devices can also be customized. It is necessary to confirm the reserved interfaces of the equipment. They must be modified by authorized personnel of XCMG to avoid affecting the warranty and stability.
A: Difficulty in starting is often due to a discharged battery or a clogged fuel filter, which requires charging or cleaning the filter element. If the equipment is to be parked for a long time, the residual liquid in the mud pump should be drained, anti-rust oil should be applied to the drill pipe, and it should be idled for 15 minutes every month. On a daily basis, it is necessary to clean the silt on the machine body, add lubricating oil to the guide rails and slide rails, and check the tightness of the connecting parts.
