Low headroom rotary excavation rentalManufacturers talk about background

With the rapid development of highway bridge construction in China, bored pile engineering is more and more widely used on the basis of highway bridge. Rotary drilling rig is a relatively advanced construction method in pile foundation engineering in recent years. Compared with rotary drilling and impact drilling, it is higher in time, quality and economy. The base of this method can be replaced according to various soil conditions.

Low headroom rotary digging rental manufacturers share characteristics.

Sportiness: When the traditional drill bit moves between file positions, it needs to pull the platform, slide, hydraulic walking and other excavators, and the moving speed is very slow. The rotary excavator has obvious advantages in this respect. Because the rotary excavator itself has a crawler chassis, the walking speed is faster and the position rate is higher.

Accuracy: The rotary drill bit adopts full computer control and can adjust various specifications by itself to ensure that the drill bit's hole, verticality, hole diameter, hole depth and other specifications meet the specifications and design requirements. The rotary drill bit does not rely on the experience of the operator, but automatically adjusts the torque and drilling ratio according to the soft type and soft type of the formation.

Adaptability: Rotary excavators cannot be constructed in weak weathered rock formations, and the rest of the soil can be constructed.

Efficiency: The rotary drill uses the power of the drill to bury the oil well protection belt, the drill automatically expands and contracts, and does not disassemble during the drilling process, which saves the connection manpower and drilling time, has less auxiliary time, high degree of automation, and significantly improves work efficiency. Comrade oil, length, soil pile foundation, the time required for rotary drilling construction is only about 1/5 of the rotary drilling.

Low-carbon: The rotary drill bit uses non-aqueous media to borrow soil, only a small amount of mud is needed to protect the wall and clear holes, and the mud can be reapplied. The volume of soil removed is only 1.1 times the volume of the file.

Low headroom rotary digging rental manufacturers share service scope

This law applies to municipal construction, highway bridges and high-rise buildings.

The method is applicable to all kinds of soil except weak weatherization

Low headroom rotary digging rental manufacturers talk about process principles

Rotary drilling uses the form of power, uses strong torque to directly rotate to excavate soil or gravel and other drilling slag, and then uses a rotary excavator to quickly drill holes to achieve dry construction without mud support. Even if the special formation requires a mud protection wall, the mud only has a supporting effect, and the mud content of the borehole is quite low, which can greatly reduce the pollution source, thereby reducing the construction cost.

Construction method of rotary drilling

When the rotary drilling and drilling encounter large boulder stratum, if the surface stone stratum is on the shallow surface, the excavator shall dig out the surface stone and remove the backfill clay, and then put the hole protection cylinder at the bottom of the surface stone stratum. If the drifting stone is located in a deeper part, when the drifting stone particles are larger than the sand bucket entrance and cannot be drilled normally, the large drifting stone can be taken out with a barrel drill bit, and then drilled gradually together with the salvage sand bucket.

When the bored pile encounters boulder, as long as the boulder is accurately in the hole, the boulder can be directly taken out with the barrel drill bit.Low headroom rotary excavation rentalThe manufacturer believes that if most of the bouldo is buried in the princess formation to form exploration stones, it cannot be forced to drill. Slowly cut the exploration cabin outside the barrel and take it out before drilling normally.