Introduction to the rental of rotary drilling rigs The pile driver consists of a pile hammer, a pile frame and auxiliary equipment. The pile hammer is installed between two parallel vertical guide rods (commonly known as gantry) at the front end of the pile frame, and the quality is improved by the hook. The pile frame is a research steel structure tower with a hoist at the rear for enterprise lifting piles and pile hammers. There is a guide frame composed of two guide rods in front of the pile frame, which is used to control the development direction of the pile, so that the pile can accurately penetrate into the ground according to the design of different directions. The pile driver leasing company said that the basic technical parameters of the pile driver are the weight of the impact piece, the impact kinetic energy and the impact frequency. According to the main source of movement development power, pile hammer can be divided into drop hammer, steam hammer, diesel hammer, hydraulic hammer and so on.

Rotary drilling rig rental company introduces pile driver types

The pile hammer is a heavy steel block that is lifted by a winch with a hook, and then dropped freely along the guide frame to pile.

Rotary drilling rig rental: The pile hammer consists of a hammer head and a base, and is powered by steam or compressed air. There are two types of single-acting steam hammers and double-acting steam hammers. The single-acting steam hammer uses a plunger or an oil cylinder as the hammer head. The steam drives the hammer head to rise, and then drops the guide rod of the hammer seat to drive piles. Double-acting steam hammers can generally use weighted plunger movement as the hammer head, and the cylinder work as the hammer seat. The steam pushed the hammer up and then pushed the hammer onto the pile. The up and down reciprocating motion develops fast and has high frequency, which makes the pile body produce influence vibration when studying the formation in depth, which can reduce the trade friction resistance and achieve good piling effect of the enterprise. The two-way differential steam hammer has unequal force, light hammer seat, relatively increased effective impact weight and better performance. The reversing system of the steam hammer inlet and exhaust valves can be manually managed and controlled, and can also be automatically controlled by the flange rod installed on the side of the hammer head and lifted with the hammer head. Both methods can adjust the impact stroke of the steam hammer.

Rotary Drilling Rig Rental Company Introduces Diesel Hammer Piling Driver

Rotary drilling rig rental: The main body is also composed of a cylinder and a plunger. Its working principle is similar to a single-cylinder two-stroke diesel engine. The powerful pressure generated by the explosion of atomized diesel injected into the combustion chamber of the cylinder is used to drive the hammer head. Diesel hammer can be divided into guide rod type and barrel type according to the structural design form. The guide rod diesel hammer uses the plunger as the hammer seat and presses on the pile cap, and the oil cylinder acts as the hammer head to move up and down along the two guide rods.

Rotary drilling rig rental: when piling, first lift the pile to the gantry of the pile frame, then put the diesel hammer on the top of the pile, lower the safety hook to lift the oil cylinder at the same time, and then loosen the control hook to make the oil cylinder whether it falls into a plunger and is about to be enclosed in the cylinder. When the pressure pin outside the cylinder pushes the fuel pump rocker arm on the hammer seat, the fuel pump sprays oil mist into the cylinder. When the oil mist encounters high-temperature ambient gas above the fire point, information explosion immediately begins to occur, and the explosive force develops downward to impact the pile Sinking, pushing upward continuously to make the cylinder rise. The second impact cycle begins when the cylinder drops down the guide rod again.

Rotary drilling rig rental: The invention uses a cylinder as a hammer seat, which is directly guided by the inner wall of the slender cylinder, and saves two guide rods. The plunger is a hammer head that can move up and down through the cylinder. When driving a pile, press the pile cap on the lower part of the pile top hammer seat, lift the plunger with a hook, then unhook and knock it down to compress the air in the cylinder. And fuel injection, explosion, impact, ventilation and other working processes.

Rotary drilling rig rental: The work of the diesel hammer is started by the compression ignition of diesel, so we must be able to ensure that the enclosed gas in the cylinder can reach a certain compression ratio of the enterprise. When driving piles in soft soil, sometimes the reaction force is too small and the pressure is not enough to ignite. To detonate, the hammer needs to be lifted several times with a hook before starting to decouple the impact. Fuel injection pump, fuel tank, cooling control water tank and pile cap are installed on the hammer seat of diesel hammer. The moving gap between the plunger and the cylinder is sealed with an elastic column plug ring.