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公开(公告)号：US09759124B2
公开(公告)日：2017-09-12
申请号：US14533168
申请日：2014-11-05
申请人： DELMAG GmbH & Co. KG
发明人： Leopold Jerch , Matthias Heichel
摘要： A pile hammer includes a cylinder, a piston displaceably guided in the cylinder, and a striker displaceably guided in the cylinder. The striker is disposed underneath the piston in the operating position of the pile hammer. A combustion chamber is delimited axially by a face surface of the striker that lies in the interior of the cylinder and by a face surface of the piston. Using at least one fuel feed device a predetermined amount of fuel can be introduced into the combustion chamber during each working cycle. A primary fuel feed device is provided, which includes a primary fuel nozzle connected with a primary fuel tank having a fuel with great anti-knock properties. The primary fuel nozzle is structured as a high-pressure injection nozzle. An ignition oil feed device is also provided, which includes an ignition oil nozzle connected with an ignition oil tank having an ignition oil. The ignition oil nozzle is structured as a low-pressure injection nozzle. A method operates such a pile hammer.
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公开(公告)号：US10167604B2
公开(公告)日：2019-01-01
申请号：US14821209
申请日：2015-08-07
申请人： DELMAG GmbH & Co. KG
发明人： Matthias Heichel , Nikodemus Heinz
摘要： A rope-suspended leader mast includes a lower part for accommodating a material to be pile-driven and an upper part for accommodating a diesel pile driver having a fuel feed. The leader mast is provided with at least one securing rope. A fuel feed interrupter interrupts the fuel feed of the diesel pile driver accommodated by the rope-suspended leader mast when the securing rope is tensioned.
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公开(公告)号：US09752295B2
公开(公告)日：2017-09-05
申请号：US14619271
申请日：2015-02-11
申请人： DELMAG GmbH & Co. KG
发明人： Matthias Heichel , Leopold Jerch
IPC分类号： E02D7/12
摘要： A pile hammer includes a cylinder, a piston displaceably guided in the cylinder, and a striker displaceably guided in the cylinder. The striker is disposed underneath the piston in the operating position of the pile hammer. A combustion chamber is delimited axially by a face surface of the striker that lies in the interior of the cylinder and by a face surface of the piston. Using at least one fuel feed device a predetermined amount of fuel can be introduced into the combustion chamber during each work cycle. An end ring is disposed on the cylinder for forming a capture groove. The piston is provided with a step that projects outward, which makes contact with the capture groove in the upper end position of the piston, and the end ring is elastically connected with the cylinder.
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