What are Hammer Piling Rigs?
Hammer piling is a form of driven piling, where a rigid pile is driven into the ground by impact or vibration. This is the fastest type of piling, however creates significant noise pollution and shockwaves, and can only be used in consistently malleable ground conditions – for instance, hard boulders in the soil will cause the pile to deflect.
What Hammer Piling Rigs are used for
Hammer Piling Rigs and Pile Driving Rigs are essential in construction, driving the piles needed for foundations and structural support deep into the ground, typically using high powered hydraulics or diesel explosions.
Used Hydraulic Hammer Piling Rigs
The Junttan PM20 is a fast, self-propelled hydraulic hammer with a 5 ton impact, while the PM25 goes up to 7/9 tons.
A hydraulic Hammer piling machine can be used on a crane suspension to drive steel pipe and precast concrete piles. Hydraulic Piling hammers are more environmentally friendly than older diesel powered pilling machines
With the Piling hammer operated by hydraulics instead of a diesel-powered explosion, these are fast machines, ideal for soft ground conditions in places with low population density, such as oil refineries, power lines and new factory developments. A Junttan pile driver machine can save you time and money.
A pile driver is a piling rig used to drive piles into soil to provide foundation support for buildings or other structures. The term is also used about members of the construction crew that work with pile-driving rigs. A hydraulic pile driver or a drop hammer piling rig can be used for onshore or offshore pile driving. One type of pile driver uses a weight placed between guides so that it can slide vertically. It is placed above a pile. The weight is raised, which may involve the use of hydraulics or diesel. When the weight reaches its highest point, it is released and hits the pile driving it into the ground.
Types of Pile Drivers include:
• Diesel hammer
• Vertical travel lead systems
• Hydraulic hammer / hydraulic pile driver
• Hydraulic static pile driver
• Hydraulic press-in
• Vibratory pile driver/Extractor Piling rig
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What is the difference between and diesel and hydraulic hammer?
Diesel Hammer – A large two-stroke diesel engine with a piston weight.
The cable from the crane holding the pile driver is raised and draws air into the cylinder. Diesel is injected into the cylinder and the weight is dropped. The weight of the piston compresses the air and fuel which ignites. This then transfers the energy to the pile head and back up. The cycle then begins again. You can view a diagram on how a diesel hammer works.
Hydraulic Hammer – A modern replacement for diesel hammers.
Hydraulic hammers are more environmentally friendly than older, less efficient hammers as they generate less noise and pollution. The weight is raised by a double chain which is run by a speed variable hydraulic motor. A tie bar between the chain grabs a catch on the weight and at a certain height is pushed in allowing the weight to fall. Once at the bottom, the catch is released again and the cycle continues.
Accelerated Hydraulic Hammer – Designed for multipurpose and faster piling.
Accelerated hydraulic hammers or pile driving rigs have specially developed drive cap designs which make it possible to drive a wide range of pile types and sizes such as precast concrete piles, tubular steel piles, sheet piles in pairs and all types of universal bearing piles. The downward fall of the hammer is powered which results in an accelerated stroke rate and an increased impact for faster piling.
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