2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16
The URB 2A2 drilling rig is one of the most versatile in its class. The machine is designed for creating explosive and water intake wells, exploration of various deposits. In addition, it is used in the field of oil refining, geophysics, mining, engineering geology. Consider its characteristics and features.
How does a car work?
Drilling rig URB 2A2 as standard is based on a reinforced carrier-type frame. It is mounted on the base of the modernized ZIL-131 car. The truck has a high cross-country ability, which allows drilling and exploration in almost any conditions.
A movable hydraulic rotary mechanism is provided, with which you can perform the following manipulations:
- Raise and lower the drilling attachment.
- To increase the length without breaking away from the face.
- Improve the quality index of drilling operations.
The hydraulic drive greatly facilitates the whole process. The element is controlled by a remote control from the driller's seat. Such interactionguarantees sensitive and fast drilling. The kinematic structure aggregates with the truck engine using:
- Drilling type pumps (NB-50, MN-250/100, NSh-10-EL).
- Rotating mechanism, compressor, hydraulic motor.
- The transfer and transmission box, the power take-off unit of the installation itself.
Description of drilling rig URB 2A2
The technique under consideration can also be mounted on a tracked or sledge-type base. These options are optional. It is made to order, since the URB 2A2 operates from the power unit of its own wheelbase, the machine is not able to work autonomously without providing additional power.
The main advantage of the technique in question is the design, which is completely made according to domestic technology using exclusively Russian parts. This factor allows you to reduce the cost of operation without loss of quality. In addition, the special equipment has a high maintainability with the possibility of ordering the required spare parts with the fastest possible delivery. Since all consumables are produced at specialized factories in Russia, there is no need to wait several months when ordering parts, as is the case with foreign suppliers. The drilling rig URB 2A2 can be operated in the most difficult conditions. The car performed well in Yamal and Yakutia.
Features
This technique is used for geologicalresearch, with the possibility of reconnaissance at any level up to 300 meters. It is also used to create wells for water intake, which are being built in order to equip a water supply system for various purposes (industrial and domestic use). A feature of the machine is the possibility of synchronous washing or blowing of the processed drifts. It is worth noting that the overall process does not stop, which ensures the uninterrupted work.
Connection and disassembly of pipes are carried out by means of screws using a rotator, which eliminates the use of additional devices. Thanks to the presence of a hydraulic cylinder that provides lifting and lowering manipulations, even when drilling with pneumatic hammers, the required constant pressure on the bottomhole is controlled.
Technical characteristics of drilling rig URB 2A2
The following are the parameters of the technical plan of the technique in question:
- The starting diameter of the work is 19 cm.
- Drilling depth of wells (geophysical/structural/auger/) – 100/300/30 m.
- Similar indicator when blowing - 30 m.
- The maximum total drilling diameter is 11.8 cm.
- RPM (1/2/3 speed) - 140/225/325 rotations per minute.
- Torque (1/2/3 speed) - 2010/1210/830 Nm.
- System pressure indicator - 100 kg/cm2.
- Mast/Tool capacity - 6000/4600 kgf.
- Dimensions - 8, 08/2, 5/3, 5 m. In the working position, the height reaches8, 38 m.
- Weight - up to 13.8 t.
- Compressor type - KSBU-4VU1-5/9.
Operation
The URB 2A2 drilling rig is equipped with a hydraulic system with pressure gauges that guarantee the optimal mode of operation of the mechanism. With the help of special filters, the oil is cleaned, which allows several times to extend the operational life of the units. The installed mechanical type emergency pump allows you to manually deactivate the unit in the event of a vehicle breakdown.
Lifting of the working tool is provided in four modes: normal, emergency, fast and slow. It can be hung in any of the elevated positions thanks to the supporting retractable jacks. The tool can also descend in several modes. A simple yet reliable hydraulic system allows full machine control without any problems.
The power take-off is equipped with one gear and a clutch. The part is fixed in the upper compartment of the crankcase of the ZIL transfer case. Activation of the dispenser of the installation itself is carried out by means of a cardan shaft and a power take-off unit. With this block, the rotation is transmitted to the drilling and oil pumps.
Spinner
The rotation mechanism of the URB 2A2 drilling rig, the photo of which is available above, includes a box with three shafts and the same number of speeds, as well as cylindrical and gear elements. The rotator is housed in a steel cast housing, which ensures the strength and reliability of the assembly. On the controlThe remote control adjusts the spindle speed, from zero mode to the maximum rate.
The hydraulic feed jack includes a rod and a cylinder that receives part of the reactive load. The unit is equipped with one stage of pair action. The mast has a U-shaped configuration, made of channels with additional crossbars. In the inner part there is not only a jack, but also two pipes on which the load acts. This solution allows you to optimize the work of the drill in difficult conditions. The centering table makes it easier to use the tool.
Other mechanisms
The URB 2A2 drilling rig includes a tackle system that allows you to double the stroke of the rotating device, it has a reinforced design with two tensioners.
The elevator is responsible for screwing or unscrewing the working pipes and tools. It has a high-quality mount and device, easy to manage. Auger chucks give you the ability to build and lift units safely with controlled drilling quality. Features of the structure of the rotational device allow for a double speed of movement. The mast is transferred to the transport position automatically in case of failure of the drive motor or transmission. With the help of support jacks, the base vehicle is unloaded.
Scheme
Below is a schematic representation of the URB 2A2 drilling rig, the characteristics of which were discussed above, as well as the decoding of the digital designations.
- Mud pump assembly.
- PTO.
- Pump drive.
- Hydraulic type jack
- Compressors.
- Handout.
- Lift cylinder.
- Rotation mechanism.
- Carriage.
- Elevator.
- Auger chuck.
- Sealing unit.
- Working mast.
- support jack.
- Tackle equipment.
- Control system.
- Basic vehicle.
- Rama.
- Distributor.
- Tie the hydraulic assembly.
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