Hydraulic Hammers

Advantages of Junttan hydraulic hammer

• Effective energy transfer

• Proven, simple and robust design

• Versatile options

• Easy to use and maintain

• Environmentally friendly compared to diesel hammers

Three piling hammer technologies

• Hydraulic hammers

• Diesel hammers

• Air/steam hammers

• HHK A - series: Stroke up to 1200 mm• HHK S – series: Stroke up to 1500 mm

• Ram weight from 3 to 25 tons• Energy output from 35 to 368 kNm

Junttan Hammer models

Hammer utilisation

Purpose built piling rig (hammers up to 12 ton)

Crane use with hanging leader (normally hammers

from 14 ton and up)

Hammer utilisation

Barge use with fixed leader (normally hammers from 16

ton and up)

Crane use with flying leader (normally hammers

from 14 ton and up)

Junttan Hammer Structure• Effective energy transfer

• Proven, simple and robust design

• Versatile options

• Easy to use and maintain

Junttan Hammer Attachments

• Lifting Kit for Crane Hanging application

• Includes– Cylinder Top protection– Lifting sling – Ropes

• Raked piles Kit– Long ropes

• Flying Leader Kit for Crane hanging application

• Needed for raked piles in higher inclination

• Feaster and easier work with raked piles

Junttan Hammer Attachments

Junttan Hammer Attachments

• Guide claws available for different leader profiles

• Fixed Leader application– Piling Barges– Large Piling Cranes

Junttan Hammer general arrangement

Easy and safe to useControl Box

Strokeheight scaleon hammer

frame

Energy measure

device (Optional)

Power Pack

Easy to set up and service

• Quick set up for operation

• Easy to handle

• Easy access to the service and repair points (seals, cylinder)

Diesel hammers (single acting)

• Self contained unit, does not require additional equipment

• Increase strokes in hard driving provide increasing energies, low strokes in easy driving protect concrete piles

• Relatively low ram weight compare to energy (high strokes)

• Stroke dependent on hammer-pile-soil system, the stroke can not be effectively adjusted by operator.

• Relatively low blow rates ( blows per minute) with high strokes

• Environmental problems (smoke, noise, vibration)

• Very complicated on off shore

The advantage of Hydraulic hammers• The impacting energy is adjustable with adjusting the drop height

• The time of impacting is adjustable thanks to driving is independent on the Hammer-pile-soil system

• Higher efficiency

• No smoke and oil pollution from hammer

• Lower noise level

• Lower impacting vibration

• Bigger inclination can be reached with less energy loss.

• Better penetration, more meters/hour

• Same hammer can be used to drive all of the material piles and all kind profiles

JUNTTAN hydraulic hammer offers

• Simplicity compare with other hydraulic hammer

• The stroke is designed to be suitable to both steel piles and concrete piles.

• Suitable to bigger Inclination with minimum energy loss

• Suitable to both on shore or off shore without any extra cage (free suspended driving)

• With driving cage the hammer can reach bigger inclination on concrete pile (does not bend the pile)

• The cage design could be very simple thanks to the less weight of the hammer, the bigger crane capacity is not needed.

• Perfect energy transfer from hammer ram to pile, more meters/hour

JUNTTAN Hydraulic Hammer Offers• Easy to operate

• Hydraulic and electronic control system

• Free fall hammer – The downward force is to overcome the loses in the system– To drive the concrete pile with easy drive

• The ram block weight can be easily modified into different weight. – The hammer can be performed as several hammers

• The hammer stroke could be controlled and adjusted by operator with figure tip movement, so that the hammer could be used in the most difficult soil conditions.

• Extra meters could be driven

• Longer lift time, easy service

The Hydraulic and Diesel Hammer

Hammer typeKinetic energy

(ft.lbs)

Energy on pile (ft.lbs)

Delmag D36-32

Junttan HHK 5A

83.880

44.334

37.746

42.117

Delmag D46-32

Junttan HHK 7A

107.177

62.067

48.229

59.120

Delmag D62-22

Junttan HHK 9A

165.000

79.801

74.250

76.106

Delmag D80-23

Junttan HHK 12A

225.000

106.402

101.250

101.229

Delmag D100-13

Junttan HHK 16A

300.000

141.869

135.000

134.480

We take 45% efficiency for diesel hammer, and 90% efficiency for Junttan hydraulic hammer

One Hydraulic Hammer Can Perform as Several Diesel Hammers

• The ram block weight can be formed with two to three pieces.

• The drop height can be adjusted according the soil condition and size of the pile

• With one Junttan hammer can perform the pile driving work as several diesel hammers.

Hydraulic Hammers in cranes

World Wide

Junttan Hammers around the World

Malaysia / PenangHHK 25S

• Off shore (Bridge)• Barge crane application• 1000 mm steel tubes • 45 + 45 m long

Junttan Hammers around the World

BrazilHHK 12S

• Off shore (Harbour)• Flying leader

application• 800 mm steel tubes

Junttan Hammers around the World

Australia / AdelaideHHK 18/20S

• On & Off shore (Ship yard)

• Crane application

• 1000 mm steel tubes

• 25 m

Junttan Hammers around the World

Australia / GladstoneHHK 14S

• Off shore (Harbour)• Crane application• 1000/1200 mm steel

tubes

Junttan Hammers around the World

PeruHHK 14S

• On & Off shore (Oil harbour)

• Flying leader application

• 1200 mm steel tubes

Junttan Hammers around the World

Finland / HelsinkiHHK 12S

• Off shore (Harbour)• Barge crane

application• 1200 mm steel tubes

Junttan Hammers around the World

China / ShanghaiHHK 18/20S

• Off shore (Bridge)• Barge crane application• 1200 mm steel tubes

Junttan Hammers around the World

China / Hong Kong HHK 20S

• On shore (Foundation)

• Leader crane application

• Several sizes of H-beams

Junttan Hammers around the World

China / ShantouHHK 12A

• Off shore (Harbour)• Crane application• 900 mm steel tubes• 50 - 60 meters• Raked piles 1:3 to 1:12

HHK A hammer in Hong Kong