SU1218067A1 - Underwater sampler - Google Patents

Description

The invention relates to underwater technical means for sampling bottom soil, in particular to samplers that are lowered from a ship on a flexible link.

The aim of the invention is to increase the efficiency and reliability of operation by simplifying the design.

FIG. 1 shows the underwater sampler, general view; in fig. 2 - scheme of his work; a - the initial position of the sampler; b - bringing the paws of the support into the working position and lowering the sampler to the bottom; c - stabilization at the bottom and the beginning of the drilling; d - end of drilling and fixing of the cage on the column end; d - lifting the sampler aboard the vessel.

The underwater sampler contains a loader 1, a core pipe 2 on which a cargo cable 3 is attached, connected to a winch (not shown). The column tube 2 is mounted in a cage consisting of flaps 4 connected by a hinge 5. In the operating position, the flaps 4 are connected to each other by means of a clamp (not shown). The hinged paws 6 are also hinged to them. The column projectile is equipped with a locking mechanism consisting of swivel cheeks 7. The hinged paws 6 are connected by a flexible link 8 to the upper part of the projectile. Swivel cheeks 7 mounted on the axis 9.

On board the vessel, a dumping device for a clip (not shown) is rigidly fixed.

Underwater sampler works as follows.

The ferrule assembled on deck is winched overboard and vertically mounted to be dropped.

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shchy device. In the same way, the coring drum is removed with the help of cable 3, after which the valves 4 are opened by turning the axis 5 of the joint 5. The columnar 2 on the cable 3 is folded into the holder so that the locking mechanism is higher than the holder.

The flaps 4 of the cage are closed with a lock (Fig. 2, a), and with the help of a dumping device the clip is dropped from the ship’s side, slipping along the coring projectile 2, while the paws 6 are opened to the working position by tension of the flexible links 8. The sampler is ready to descend to the bottom (Fig. 2, b).

On the cargo cable 3, the sampler is lowered to the bottom, where the holder with hinged paws 6 stabilizes the corolla d 2 in a vertical position. The immersion device 1 is turned on, under the action of which the coring drum 2 begins to sink into the ground (Fig. 2, c).

When the coring device is immersed, the cheeks 7 of the locking mechanism first enter the cage, deviate from the working horizontal position, and then, leaving the cage, return to their original position and fix the cage on the columnar screen. This moment is the end of drilling signal (Fig. 2, g.)

The loader 1 is turned off, and with the help of a cargo cable, the 3-column ee is lifted to the surface. In this case, the bottom end rests on the cheeks 7, and the paws 6 fold under the action of their own weight (Fig. 2e). The sampler rises to the level of the ship’s side, is mounted on the dumping device, the shutters 4 are opened, the core shell 2 is removed from the shroud, and on the cable 3 it rises to the deck of the ship.

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Compiled by E. Samoilenko

Editor L. Veselovska Tehred I. VeresKorrektor A. Zimokosov

Order 1097/40 Circulation 548 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Filia.lp PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

UNDERWATER SAMPLER, comprising a loader, a core tube with a protrusion in the upper part, a suspension in the form of a cable fixed at one end to the core tube, and the other at the winch located on board the vessel, a clip movable relative to the core tube with hinged legs pivotally mounted on it , stops and a locking mechanism that interacts with the protrusion in the upper part of the core tube, characterized in that, in order to increase efficiency and reliability by simplifying the design, the folding legs are equipped with ropes replicated on them, the clip is made with a connector along its generatrix and can be fixed on board the vessel, and the locking mechanism and the upper ends of the cables of the folding legs are fixed in the upper part of the core pipe. Fig!