Decryption long spiral drilling rig use features

Long spiral rig service upgrades will lead the industry, and long spiral boring machines include hydraulic walking piles and drilling sections. The walking part of the machine adopts hydraulic walking type, seven-way valve control, and can be self-loaded and unloaded. When the pile is piled, it rotates 360° and there is no dead angle. There are hydraulic legs to aid walking and turning and to increase overall stability during construction. The pile frame is designed with a towing device that can be transported by the whole machine. The column is a collapsible box-type column with a flange connection, controlled by a hydraulic cylinder. The drilling system includes a power head and a drilling tool. The output shaft and the auger drill of the power head are hollow. The pile driver uses a long spiral to form a hole, and the concrete {or mud} can be pumped to the concrete CFG pile through the drill pipe center pipe. , that can be drilled into a hole to complete a machine, can also be used for dry hole, grouting displacement after changing drilling tools can also take deep mixing and other construction methods.

Structure and working principle

The hydraulic walking pile frame of the machine is mainly composed of a top pulley block, a column, a diagonal bracing, a chassis, a walking mechanism, a swing mechanism, a hoisting mechanism, a control room, a hydraulic system, an electric system and a towing mechanism.

Columns are folded, with box-section structure, flange connection. Both sides of the column are equipped with circular slides as the power head, drill rod up and down movement guide and torsion. The box-shaped collapsible column equipped with this type of drilling machine uses a hydraulic cylinder for taking off and landing, which is convenient and quick and does not require disassembly during transportation. The lower part of the column is hinged with the upper plate, and the middle part and the rear part are articulated. The top of the column has a pulley block to complete the take-off and landing of the power head, steel cage and grouting pipe. The power head can be disassembled when it slides up and down along the slideway.

Walking mechanism

The walking mechanism is a hydraulic walking type. During the advance, the hydraulic cylinders of four outriggers support the ground and the lower plate moves to the ground through the hydraulic system to drive the walking cylinder to advance the rig shoe. Then, the outriggers are stowed, and the chassis is pulled forward by the hydraulic cylinder contraction. After such repeated operations, the rig is realized. Row.

Slewing mechanism

The slewing mechanism is driven by a medium-speed hydraulic motor through a planetary reducer. With the cooperation of four-legged hydraulic cylinders, the slewing machine can be rotated. Because Henan Sanli mechanical hydraulic motor has the characteristics of stable power, stable operation, small rotating inertia and high starting efficiency, the pile driver has the advantages of stable rotation, no impact, no vibration, good stability of the whole machine and long service life.

Towing device

Support leg hydraulic cylinders support the chassis to install and remove the towing device conveniently and quickly. The towing device is mainly composed of 8 tires. Since the pile frame is designed with a towing device, the whole machine does not have to be disassembled during transportation, and only part of the components (mainly including the power head, braces, drills, drill rods, slide brackets, columns) The top pulley block) is disassembled to meet the requirements of road transport.

The power head adopts a three-ring reduction mechanism, and this type of speed reduction mechanism is a fairly mature product. The large central hole reducer, with high overload capacity, compact structure, low noise, and long life, is the most ideal power unit for domestic drilling rigs. It has two air-cooled motors, speed reducers, elbows, exhausts, lifting frames and sliding components. Two motors pass through during work

The coupling drives the high-speed rotation of the reducer, and drives the low-speed shaft and the low-speed shaft to drive the drill pipe and the drill bit to rotate through the flange.

Control room

The control room is located at the bottom of the rig's front pillar, with a steel shell structure and windows on three sides to ensure a wide field of vision and safety and comfort. The drilling rig is controlled by an electrohydraulic joint. All the control buttons and handles are placed on the control panel in front of the control room. The operation is quick and easy.