Pile driver rental: what are the types of pile drivers?

The pile driver is composed of pile hammer, pile frame and accessory equipment. The hammer is attached between two parallel vertical guide rods at the front end of the pile frame and is lifted by a hook. The pile frame is a steel tower with a hoist at the rear for lifting piles and pile hammers. So, pile driver rental: what are the types of pile drivers?
Pile driver rental: what are the types of pile drivers?
1. Falling hammer pile driver
The pile hammer is a heavy steel block that is lifted by a winch with a hook. After unhooking, it falls freely along the guide frame for stacking.
2. Stamping steam pile driver
The hammer consists of a hammer head and a hammer seat, and is powered by steam or compressed air. There are two kinds of single acting steam hammer and double acting steam hammer. A single steam hammer uses a plunger or cylinder as the hammer head. The steam drives the hammer head to rise, and then allows it to fall along the hammer seat guide rod for piling. Double-acting steam hammers generally use a weighted plunger as the hammer head and a cylinder as the hammer seat. The steam drives the hammer head upward, and then drives the hammer head downward to impact piling. The upper and lower speed and higher frequency make the pile vibrate when it goes deep into the ground, which can reduce the friction resistance and achieve a good pile driving effect. The differential steam hammer with unequal two-way force, the hammer seat is lighter, and the effective impact weight can be relatively increased, so the performance is better. The reversing of the inlet and exhaust rotary valves of the hammer can be controlled manually, or automatically controlled by a flange joystick installed on one side of the hammer and lifted with the hammer. The impact stroke of the hammer can be adjusted in both ways.

3. Diesel hammer pile driver
The main body is also composed of a cylinder and a plunger, and the working principle is similar to a single-cylinder two-stroke diesel engine. The atomized diesel injected into the combustion chamber of the cylinder is driven to do work by the strong pressure generated by the combustion and explosion under high pressure and high temperature. Diesel hammer is divided into guide rod type and cylinder type according to its structure. The guide rod type diesel hammer uses the plunger as the hammer seat to press the pile cap, and uses the cylinder as the hammer head to lift along the two guide rods. When driving a pile, first lift the pile into the gantry of the pile frame, then put the diesel hammer on the top of the pile, lower the hook to lift the oil cylinder, then loosen the hook to let the oil cylinder fall into the plunger, compress the air enclosed in the oil cylinder, and the oil cylinder continues to fall. When the pressure pin outside the cylinder pushes the fuel pump rocker on the hammer seat, the fuel pump will spray oil mist into the cylinder. When the oil mist encounters high-temperature gas above the ignition point, it will explode immediately, and the explosive force will impact downward to make the stack sink and move upward. As the hammer seat of the diesel hammer, the cylinder is directly guided by the lengthened inner wall of the cylinder, eliminating the need for two guide rods. The plunger is a hammer head and can move up and down in the cylinder. When driving a pile, press down the pile cap at the lower part of the pile top hammer seat, lift the plunger with a hook, then unhook, impact downward, and compress the air enclosed in the cylinder. As well as fuel injection, explosion, impact, ventilation and other working processes. The work of the diesel hammer is started by compressing and burning diesel, so it is necessary to ensure that the closed gas in the cylinder reaches a certain compression ratio. Sometimes when piling in soft soil, the reaction force is too small and the compression force is not enough to ignite and detonate. It is necessary to decouple the impact with a hook lift hammer many times before starting. The hammer seat of the diesel hammer is equipped with an injection pump, an oil tank, a cooling water tank and a pile cap. The movable gap between the plunger cylinder and the plunger cylinder is sealed by the elastic column plug ring. hydraulic hammer pile driver
It is started by diesel belt, driven by oil pressure, and the hydraulic pressure can be adjusted according to the soil quality of the formation to achieve a suitable piling impact force. This is a new type of pile driver. Small and medium-sized hydraulic pile drivers are often used in the construction of highway guardrails and highway guardrails. Similar pile driving equipment are: hydraulic pile driver, highway pile driver, guardrail pile driver, highway drilling machine. Compared with diesel pile drivers, the energy transfer efficiency of hydraulic hammer pile drivers can reach 70% ~ 95%, while diesel hammer pile drivers are only 20% ~ 30%. The hydraulic hammer pile driver is accurate in pile control and can realize pile driving in different strata. The hydraulic hammer pile driver has excellent noise reduction, vibration reduction and noise reduction performance, and is especially suitable for urban construction. Pile driver rental: hydraulic hammer pile driver energy saving effect is obvious, is the mainstream of the future development of pile driver.