Diesel - Hydraulic Clamshell Grab Type DHS-B 8,0mÂ³

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A high utilisation of the crane’s lifting capacity and therefore an optimised load turn - over is guaranteed due to the minimised dead weight of the grab in combination with the designed grab volume and load capacity. The mechanical stability is guaranteed by a homogeneous construction, ample dimensioned components and a good welding workmanship. Centre Grab Section The centre grab section consists of a sturdy, welded steel construction made of high tensile steel quality St 52-3. It functions simultaneously as hydraulic tank with top-mounted fuel tank, support for the clamshells and bearing point for the working cylinders. The diesel - hydraulic drive unit is installed protected by foldable covers, the exhaust pipe unit is mounted at the outside. To avoid the exhaust pipe unit from the vibrations of the diesel engine a flexible pipe made of stainless steel is installed between the exhaust bend and the exhaust pipe. The fuel store is sufficient for a single - shift working day. The cross-member with shackle and chain is bolted to the vertical support arms. Drive Unit The drive unit consists of the diesel engine with directly flanged variable axial hydraulic piston pump. The complete unit is mounted onto the tank-top of the centre grab section. Diesel engine : Type KHD Deutz / Kubota Axial piston pump : Make Rexroth - Hydromatic or equal The hydraulic control valve, necessary remote control valves and remaining fittings are mounted on the top of the hydraulic - tank. Radio Control Unit Type : 4- Channel with German FTZ - Certificate The following functions are controlled via this mobile radio unit: - Diesel engine " Start " - Diesel engine " Stop " - Grab " Open " - Grab " Close " The receiver is mounted protected on the centre grab section below the foldable covers; the antenna is mounted at the outside of the centre machine unit. Page 4 of 6
Hydraulic cylinders Double - acting hydraulic cylinders with sea - water - resistant nickel - chrome - plated piston rods. The cylinders are protected against bulk a.s.o. by steel covers. Clamshells The grab clamshells are of a welded, stiff steel construction with solid designed bearings to be connected to the main power section and to the hydraulic cylinders. A pipe of a large diameter is installed across to the clamshell upper section and both yoke plates, which are descending from the clamshell to the grab arm bearing point. This thick walled pipe is additionally stiffening the clamshell - side plates and provides a high constructive twist resistance. The bottom- and side - plates are of steel quality St 52 - 3. The clamshell bearings are arranged rearwards, in order to enable the grab gripping into the areas underneath the top wing tanks of the vessel. The knives are a massive construction of highly wear resistant steel type HARDOX400 (or similar quality). For an additional price standard type clamshell - teeth (choice of owner) are available. Bolts - Bolt clamshell - cylinder and case : X20Cr13 - Bolt clamshell - case : 42CrMo4 Bearings Clamshell connection to main power section and cylinders: Sealed joint bearings with additional sealing Lubrication Each bearing point is provided with an individual lubrication bore, witch ensures that all bearing points can be checked with regard to proper grease passing. Lubrication nipples: countersunk mounted high pressure nipples of DIN - type 71 412 General remark All components are easily accessible and dismountable. Screws, axles, supports a.s.o. are DIN - standard type as far as possible. Connecting parts made from stainless steel (A4). Coatings Sandblasted SA 2,5 First coat : Primer Top coat : synthetic resign vanish Colours : yellow RAL 1004 Page 5 of 6
Page 1 and 2: Technical Description Diesel - Hydr
Page 3: General The below described radio -

Diesel - Hydraulic Clamshell Grab Type DHS-B 8,0mÂ³

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