EN
Wheel-type water well drilling rig is a kind of specialized drilling equipment with tires as the walking device, which is mainly used in the fields of groundwater mining, geological exploration, engineering survey and so on. Its core function is to penetrate the surface rock and soil layers through rotary or percussive drilling technology to form a well hole that meets the requirements. The wheel-type design gives it high mobility and quick transfer capability, and it is suitable for operation scenarios with flat terrain and convenient traffic.
The advantageous features of wheel-type water well drilling rig can be summarized as follows:
| Model | UYT180 | UYT200 | UYT260 | UYT300 | UYT400 |
| Drilling depth(m) | 180 | 200 | 260 | 300 | 400 |
| Drilling diameter(mm) | 140-254 | 140-254 | 140-254 | 100-254 | 140-305 |
| One time advance length(m) | 3.6 | 3.6 | 3.6 | 6.6 | 6.6 |
| Engine power(kW) | 55 | 58 | 65 | 85 | 91 |
| Air pressure(MPA) | 1.7-3.0 | 1.7-3.0 | 1.7-3.0 | 1.7-3.3 | 1.7-3.3 |
| Air consumption(m3/h) | 17-30 | 17-30 | 17-30 | 17-35 | 17-35 |
| Drilling pipe length(m) | 3.0 | 3.0 | 3.0 | 6.0 | 6.0 |
| Drilling pipe diameter(mm) | 76/89 | 76/89 | 76/89 | 76/89/102 | 89/102 |
| Rig lifting force(T) | 12 | 13 | 16 | 18 | 25 |
| Rotary Torque(N.m) | 3200-4600 | 3300-4800 | 4500-6500 | 5700-7500 | 6500-9500 |
| Dimension(mm) | 3950*1700*2200 | 4100*1700*2300 | 4200*1800*2300 | 5200*1900*2400 | 5900*2100*2600 |
| The Weight(t) | 4.2 | 4.5 | 5 | 6.5 | 8 |
There are significant differences between wheel-type water well drilling rigs and crawler-type water well drilling rigs in terms of structural design, applicable scenarios and performance characteristics.The core difference between wheel-type water well drilling rigs and crawler-type water well drilling rigs:
(1) Chassis structure
wheel-type type: adopts wheeled walking mechanism, similar to truck or engineering vehicle chassis, relying on wheel-types to move.
Crawler type: equipped with rubber or steel wire crawler chassis, similar to excavator structure, driven by crawler.
(2) Terrain adaptability
wheel-type: suitable for flat, hardened road surface, climbing degree is generally not more than 40% -60%, soft ground is easy to sink.
Crawler type: it can adapt to mud, mountains, slopes (gradient of more than 30 °) and other complex terrain, the grounding ratio is small, not easy to slip.
(3)Moving and transiting
wheel-type type: fast road speed, no need for trailer, high transfer efficiency.
Crawler type: trailer is needed for transport, but it is flexible to move autonomously on the construction site, especially suitable for narrow or obstacle-ridden areas.
Power transmission: the diesel engine drives the hydraulic pump, which converts mechanical energy into hydraulic energy.
Rotary drilling: the hydraulic motor drives the drill pipe to rotate and the drill bit cuts the rock and soil.
Dredging system: Mud pump injects drilling fluid into the hole and carries rock chips back to the surface (positive cycle); or backblasts and drains the slag through an air compressor (reverse cycle).
Depth control: Hydraulic cylinder pushes the mast up and down to adjust the drilling pressure and feeding speed.
The choice of drilling method of wheel-type water well drilling rig directly affects the construction efficiency and well quality. According to the different geological conditions and operational requirements, the drilling rigs can be equipped with mud pumps, air compressors or a combination of the two to achieve a differentiated drilling process.
