DE3224542A1 - Ecologically friendly deep-sea mining - Google Patents

Abstract

The foldable flat freezing grab and the rolling cylinder freezing grab for the raising of ore nodules formed on the sea bed are discussed with reference to the main application and the first supplementary application. The folding grab can be expected to exhibit a low flow resistance and intensive cutting of the nodule zone upon lowering to the sea bed and mutual protection from mud emission and dropping of useful load when raised above water with folding of the useful-load pans. Upon arrival above water and without removal of the unit from the rope karabiner, the two useful loads are discharged with an automatic multiple-ram arrangement, and the grab device is immediately ready again for the next cycle. The cylindrical rolling grab is pulled along by the cable of the ship by brief motion of the ship and, rolling on the sea bed in frictional contact, obtains its cutting and loading rolling movement. Its advantage over all flat freezing grabs is a much greater loading and transporting capacity while maintaining the freezing coupling of the useful load to the grab, because the nodules take up a great many nodule layers during multiple circulation of the grab, the sand being displaced as ballast from the nodules.

Description

.-leg. Christian Strobel Environmentally friendly marine mining. D Aagstai 1 · Wk »tr» 5 «t Addition to P 32 21 014.0 Tel. 0821 / Θ 8351 Erf Inder: Christian Strobel

the invention described below relates, as in the associated main application, to ecology-friendly marine mining. With it, ore nodules should preferably be lifted from the seabed, e.g. from a groove 5000 meters in the middle Pacific. Superordinate main invention, which is ecologically friendly, i.e. sludge emission-free, served this purpose, is and was the "freeze handle" with one on the rope of the Sohiff crane operating gripper of flat design. The freezing coupling between the lump and grapple steel provides the cooling effect from carbonic acid trooke ice filled in the gripper, less often Refueled liquid air or its liquid components. Such tuber ore deposits are preferably located far from the sea coast. They are rare in shelf zones.

The following is a new structure and handling of the flat gripper described. With it, when the grab is lowered from the ship to the bottom, the flow pressure is reduced and that of the The descent speed generated by the gripper's own weight can be increased. Another new design and mode of operation in the use of the freezer handle is intended to ensure that each surface area and weight unit dxs gripper with a single stroke transportable tuber mass is much larger than with the previous flaah gripper types.

In this regard, according to the figures of the drawing, the additional invention consists in that

in the former case a flat freeze handle folding technology is used finds, in the latter case, however, a cylindrical freezer grip technology.

These two new designs and their modes of action are interpreted in the figures in the drawing. They are schematic and drawn immeasurably.

FiR.1. to Fig. h . show the when shutting down and when starting up

Folding grippers that fold spontaneously and are made up of 2 parts with low flow resistance.
Fig «5» to .6. show the rolling gripping type.

Fig; 1 . the arrowed fold is shown for the departure.

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Fig. 2 shows the same gripper unfolded with its sons lying on the ground for the incision, although uneven gn would still be suitable.

Fig. 3 «shows near the freeze gripping of a bulbous field in folded 180 ° the folding gripper when moving up, together with its clamped secured bulbous load. This jamming is the maxim here.

Fig . 4. shows to Fig.3. the Sioht A.

Fig.5 »shows the roll freeze grab in cross section with a multi-layered nodule load.

FIG. 6 shows the roll-up freezer grab in many layers, laden with tubers, in a longitudinal section.

In detail, the construction and modes of operation are as follows:

Fig.T. and Fig.2 .

In the well-known freezer grabber technique, each of the two halves of the folding grabber consists of a gripper body (1), a lid (2), filled with dry ice (* 4 -). Both hang in the pivot (if) of the lifting carriage (if) hanging on the rope (5) via ring (3c). 3b) .For ^the: Lafettflächen (3a) are both on the cover (2) obliquely upwardly swept, and have in this exit in direction of the arrow P1 small hydraulic Strömungswiderstand.Mit (la) are the hinges, with (le), the Hubmulden, with (1c) the troughs enclosing gates without gates, (1d) ice locking profiles, with (1b) several holes through which the material, including sand and ice, can be unloaded mechanically from the trough (le) over water with multiple stamps. (a) is the length and (b) the width of the bulbous field to be cut and lifted. (6) denotes the sand and (7) denotes the tubers. The gripper weight and its impact impulse from fast departure make the cut. In hollows (1 <the mixture of tubers, O "and, water freezes in a short time to" freeze packaging "and can be hoisted up without sludge (3) achieved due to braking on the two grippers by folding them down.

ORIGINAL INSPECTED BAD ORIGINAL, INCOMPLETE -;

COPY

Position either only through the departure flow resistance or it is additionally held by a latch the cover (2) held on the carriage stop (3a). In the latter case is released when burping due to this locking by braking force.

Fig. 3. and H.

When moving up with the payload in the direction of P2, the two hinge halves fold down from inertia * and with the parting line (1g), both sides of the load are placed against each other, which in addition to the. Freeze coupling effect of the payload, this mutual contact prevents the load from falling out and eliminates sludge emissions . engages, the troughs (le) of Fig.1. emptied as soon as the gripper arrives above water.

Fig. 5. and 6.

This cylinder freezer grab consists of a steel cylinder (1) with two lids (9). The cylindrical interior is filled with C02 dry ice (4). On both sides (9) there are flange screws (1O) which attach the two rope rings (8) Secure the ropes (5a, 5t>). With a large number (z ^. Of roll revolutions, a tuber field of length ^ d-TT * az] is cut into and loaded into the trough with layers of freezing tubers. Frozen water cover is indicated. It protects the water from sludge emission. (1c) is also here \ Anschnittschneide.Das the image shows how the tubers as Hartgut displaces the still visible in cross-layered flat grippers of Fig.1. to h. in the trough sand (6) entirely in Knoll layer material from z = 15-20 revolutions and the cylinder trough very close loaded with tubers; which gives the cylinder freeze grab over the flat grab in so far as with many revolutions a very long bulb field with a relatively small construction can convey with a single stroke. At z = 20, d = 2 meters and a = 2 meters, a Field 2.2.20.ΤΓ = 250 square meters cleared with a ..-> · - · - ^:: " ^ inziR9n stroke ! With P1, P2 the fall and stroke directions, with P3 the rolling direction caused by the ship's advance on the rope.

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Claims (7)

DipL-lng. Christin Strobtl tag *! »« «1. VNMiIt B 1 -! »Patent claims Tel 0821/518351 1. Ecology-friendly marine mining, according to the claims of the identical main application and the figures of Zusatzzeionung, the freezer grab for the mining of ore nodules stored on the seabed, characterized in that naoh figures 1. to k. the drawing plane gripper folding technology and according to FIGS. 5 and 6 cylinder rolling handle technology is used. 2. Marine mining according to claim 1 and Figures 1 to 4. at Plan gripper - folding technology of the freezer gripper thereby characterized in that in the downward travel phase P1 the with hinges (la) on pivot (If) of the carriage (3) hanging two folding gripper elements (1) on inclined surfaces (3a) close-fitting arrow-shaped profile with low flow resistance have, this sweep of the flow pressure of the water or additionally by a lock between lids (2) and carriage (3a) at companionway P1 is secured. 3. Marine mining according to claims 1. to 2. and Fig.1. until h. characterized in that according to Fig.2. upon impact of the carriage. (: 3) due to inertia, the lock between (2) and (3a) may be released and the two grippers with hinges around pegs (if) swiveling on the bulbous field and cutting it, whereby their Fill troughs (1e) with lumps (7) or sand (6) in one layer and the contents of the trough freeze onto the gripper metal. k. Marine mining according to claims 1 to 3 and Fig . 3 ^ to k. characterized in that after the phase Fig.2. By pulling up P2 on the rope under inertia and with the scraping action of the two outer transverse sons, the two gripper halves fold together around the pegs (if) so that their loaded troughs in the separating area (lg) touch each other and the gripper halves mutually prevent the load from falling out and prevent sludge emissions secure when booting. 5. Marine mining according to claims 1. to h. and Fig. 4. characterized in that when surfacing above water, a multi-purpose stamp corresponding to the looh pattern (1b) simultaneously pushing into the looher (1b) empties both charges of the folding gripper by pushing. 6. Marine mining according to claim 1. and Fig. 5. and <5. as Freezer roll grippers characterized by a cylindrical Hollow body (1) with circular cutting edges (ic) and a CO 2 dry ice filling closed by two lids (9) (^), being rollable around the cylinder axis on the seabed while sitting on the gripper, cut very long field zones with a large number of revolutions, making them multi-layered Can load tubers for freezing, the cylindrical shape also being better than the flat freezer grabber can also be used for uneven seabeds. 7. Marine mining according to Anspruoh 1 and 6 and according to Figures 5 · and 6, characterized in that according to Lowering on the seabed in Riohtung P1 the scuiff at Se.i (5a, 5b) pulls the gripper in the direction of P3 and thereby The gripper rotation is controlled by pins (1O) and rope rings (8) around its own axis P4 which causes the field residence and the freeze-coupling of the tubers brings about the hard ones Tubers form the white sand as they stratify displace the annular trough and the trough fills concentrated with tubers, so that with small gripper dimensions very large tubers can be conveyed per stroke and volume unit. bad original original inspected