What are the types of pile drivers?
Pile driver is composed of pile hammer, pile support and auxiliary equipment. The pile hammer is attached to two parallel vertical guide rods (commonly called Longmen) at the front of the pile support and hoisted with lifting hooks. The pile foundation is a steel structure tower with a windlass at the back of which is used to lift the pile and hammer. A guide frame consisting of two guide rods is used in front of the pile to control the direction of the pile driving so that the pile can be accurately penetrated into the formation in accordance with the design orientation. The basic technical parameters of a pile driver are impact weight, impact kinetic energy and impact frequency.
Classification of pile drivers:Drop hammer pile driverThe pile hammer is a steel heavy block, which is lifted by a hoist with a hook, and is driven by the free falling of the guide frame after decoupling.Hammer piling machinePile hammer comprises a hammer head and a hammer base, with steam or compressed air as a driving force, a single action and double action two hammer hammer. Single acting piston or cylinder as the hammer to hammer, steam driven hammer up, then let the hammer seat along the guide rod fall and piling.Diesel hammer pile driverThe subject is composed of a cylinder and a piston, similar to the working principle and the single cylinder two stroke diesel engine into the cylinder combustion under high temperature and high pressure atomized diesel combustion chamber by injection pressure generated by the detonation driven hammer working.
According to the structural form of diesel hammer rod and cylinder type separation.Hydraulic hammer pile driverThe utility model is a diesel belt starting, with the hydraulic pressure as the power, and can adjust the hydraulic pressure according to the different stratum soil, so as to achieve the appropriate impact force for piling, and is a new type of pile driver. Small and medium-sized hydraulic pile driver, commonly used in highway guardrail piling, highway guardrail construction.Screw pile driverSpiral pile driver (Spiral hammers) is a power driven drill head drill bit into the underground drilling machine drilling equipment. The spiral pile driver can be divided into two parts: the pile foundation and the drilling part.
