SU892260A1 - Device for bottom sample taking - Google Patents

Description

(54) DEVICE FOR SELECTING BOTTOMS

one

The invention relates to a technique for oceanological research, in particular to the means of sampling loose bottom sediments in the seas and oceans, and can be used in geophysical surveys of water bodies.

A device for sampling bottom samples is known, comprising a pipe-shaped body with a piston and a cutting tip, guides, a load and a carrying cable with a suspension system 1.

Closest to the proposed technical essence and the achieved effect is a device for sampling bottom samples, comprising a pipe-shaped body with longitudinal grooves in which sliders are moved, fastened in the lower part with elastic plates passing through the slots in the cutting tip at an angle to the vertical housing axis. Inside the case there is a liner of two halves with a shell. Inside the housing is placed a system of blocks with cables connected to the arms of the grippers. In the upper part, the housing has a load with stabilizers, a valve and a bracket for suspending the housing to the release device 2.

A disadvantage of this device is the maintenance of eight blocks, fastened in brackets, connected by cables with sliders and a trigger lever. The slides have guides both outside and inside the case. All this can be clogged with sand and leads to a lack of reliability of the device as a whole.

The purpose of the invention is to increase reliability.

This goal is achieved by the fact that the load is made in the form of a ring, loosely mounted on the body, the upper edge of which is equipped with a flange, and the load is equipped with cables with rings that are placed on the lower ends of the tong-and-hold grip levers, and this grip is provided with brackets to which Attachments 15 are cables, the second ends of which are fastened with an eyebolt ring.

FIG. 1 shows the proposed device, a longitudinal section; in fig. 2 is a view A of FIG. one; in fig. 3 is a sectional view of BB 20 in FIG. one; in fig. 4 shows a section B-B in FIG. one.

The device comprises a tubular body 1 with a flange and a bracket 2, an eye bolt 3 having a head in the bracket 2 is attached to the bracket 2

In the form of a ring, on the flange of the housing there is a double valve 4 for the passage of water when the device is lowered; in addition, the flaps of the valve 4 have coil springs 5 that help the valve flaps close when the device is raised.

The housing 1 has outside guides 6, in which the sliders 7 move, fastened in the lower part with elastic grooved plates 8 passing through the guide grooves in the cutting tip 9 at an angle to the vertical axis of the housing 1.

In the upper part of the housing 1, an annular load 10 is placed freely on the housing with stabilizers 11 having openings for fastening the cables 12.

When lowering the device, the rings of the cable 12 are clamped by the ends of the tongs 13 grips, the cables 12 are tensioned and do not allow the load 10 to fall onto the slide blocks 7. The cables 14 are permanently fastened with the eyebolt 3 and the brackets 15 on the clamp 16 of the tong.

Inside the bracket 16 two curvilinear double-arm levers of the tong-and-hold grip 13 are placed, rotating on the axis 17. Shpintons 19 are placed on the axles of the axes 18, which are pushed by the spring 20. The upper ends of the levers 13 have openings for which the tong-held two ways are replaced by rings to the carrying cable 21. The lower ends of the levers 13 when lowering the device close and hold the rings of the cables 12, which are tensioned and hold the load 10. The cables 14 are lowered when lowering. In the lower part of the housing 1 a liner 22 is installed, consisting of two lutsilindrov fastened together by means of rings 23 and at the top and at the bottom. In the lower part, the liner has a bead, by means of which it is clamped between the body 1 and the edge of the cutting tip 9, which is fixed to the body 1 with screws 24 (Fig. 4).

The bottom sampling device operates as follows;

Before lowering the device, the plates 8 are installed in the slots of the cutting tip 9 in the extreme upper position, and the device becomes open at the bottom. Rings of cables 12 are installed between the lower ends of the levers of the tong clamp 13. In order to prevent the levers from spring 20 from expanding, a temporary bracket 25 is installed at the ends of the arms 13, allowing the device to be lifted from the deck and lowered overboard, after which the temporary bracket 25 is removed and the device is lowered to the bottom. When the device is lowered, the water passes through the open case 1 and opens the valve 4 with its pressure.

Having reached the bottom, the device under the action of the mass and the resulting inertia from the speed of lowering cuts into the ground, which

fills the open case 1. At the same time, the carrying cable 21 is weakened, and with it the cables 12. As a result, the levers of the clamp gripper 13 expand, the rings of the cable 12 fall out from the levers 13, freed from

Tension of the cables 12, the load 10 falls, producing a blow on the slide blocks 7, which slide along the housing 1 and close the grooved plates 8, due to which the body filled with the breakdown of the soil is closed from the bottom.

The valve leaves 4 springs close the device on top. After that, the device is ready to lift. The winch is turned on to lift the device, the carrying cable 21 pulls the cables 14, the levers 13 come down to the stop, compressing the spring 20, but the rings of the cables 12 are already free, the clamp 16 with brackets 15 pulls the cables 14, lifting the device with the soil sample taken.

When the device is lifted, the valve 4 is closed, the device is sealed, and the sample is prevented from being washed out during lifting. When the device is lifted onto the pool, the water that is located above the bottom is; that breakdown, in case 1, flows through the gap between the liner and the case, and when placed on the deck through the double-leaf valve 4, without washing out

a soil sample taken by the device.

The next step is to remove the sample. The device with the breakdown is placed horizontally on the deck. The slides 7 and the grooved plates 8 bonded to it are retracted to the upper position. Before this, shear load 10 against the flange of the housing 1, the cutting tip 9 is removed. For this, screws 24 are unscrewed and the liner 22 with the recovered sand sample is taken out of the housing 1. The liner 22 with the probe is laid on the regenerated oilcloth, separated, the sand sample is carefully released from the halves of the liner 22 and wrapped.

The proposed device has a simpler and more reliable device for closing the case by plates from the bottom in the form of a ring load that is freely applied to sliders with flexible plates, and therefore the probability of failures in the clamping plates is reduced, since the device does not contain a complicated system of blocks and cables present in the known device.

Claims (1)

1. A device for sampling bottom samples, comprising a pipe-shaped body with a cutting tip, a load with a stabilizer, a supporting cable with a tong clamp, plates arranged around the side surface of the body, the lower ends of which are installed in the inclined slots of the cutting tip, and the upper ones are fitted with sliders guides and fortified on