SU1656384A1 - Device for underwater ground sampling - Google Patents

Abstract

The invention relates to devices for sampling of soil under water and makes it possible to increase the efficiency of its work on soils with rocky inclusions. The device (U) for soil sampling under water is lowered to the bottom of the reservoir on a flexible suspension (GP) 1 in a position where the clamp (F) 10 is in the lower position and locks the balls (Ø) 7 in the sleeve (B) 8, and the stop 11 Φ 10 is below the level of the lower plane of the frame 2. In the 8, it holds the soil collecting buckets (C) 4 in the open position. When reaching the bottom of the reservoir, the stop 11 first touches it. The F 10 moves upwards, its smaller diameter is at the level of W 7. The 8 is released from fixation on the hollow rack 6. When tensioned, GP 1 GK4 turns on the axis x 3 and seizes the soil sample . After the turn of HA 4 at 180 ° U rises onto the service vessel. If one of the Civil Lines 4 encounters an obstacle in the form of a solid inclusion 20 at its turn, then the movement of a part of the flexible link 12 of this Civil Code stops, the lifting of the equalization block 17 continues when the opposite part of the flexible link 12, which rotates the second Civil Code, takes a soil sample. 1 sl

Description

The invention relates to techniques for soil sampling, and more particularly to devices for sampling the surface layer of bottom sediments in natural and artificial reservoirs.

The purpose of the invention is to increase the efficiency of the device in work on soils with solid inclusions by independent operation of the ladles.

The drawing shows the proposed device (on the left side of the drawing - during the descent to the bottom of the reservoir, on the right in the sampling position of the soil), general view.

A device for sampling soil under water is connected to a base vessel (not shown) by a cable suspension 1 and includes a frame 2, in two through openings of which on the axles 3 there are mounted dirt buckets 4 with a possibility of rotation through 180 ° and the covers are fixed rigidly 5. In the center of the frame 2 there is a hollow rack 6 with a locking unit in the inoperative position (when lowering to the bottom) of buckets 4 in the form of balls 7 stamped in the rack, bushings 8 with an annular internal groove 9 for placing balls in it and a spring-loaded latch 10 with an emphasis 11. wherein the latch is made with variable m in diameter - large in the upper part and smaller - in the lower.

The flexible link 12 is fixed with its ends on the buckets 4 at points 13, it envelops the blocks 14 mounted on the frame 2, the blocks 15 'located in the upper part of the rack β on the bracket 16, and is thrown through the equalizing block 17, fixed by means of the earring 18 on the rape socket 19 flexible pendants 1.

Blocks 15 are introduced into the structure to raise the suspension point of the device on the flexible link 12 above its center of gravity to prevent the device from tipping over in suspension.

The proposed device operates as follows.

The device is lowered to the bottom of the cable suspension 1 in the position shown on the left projection of the drawing, i.e. the latch 10 is in the lower position, with its large diameter it locks the balls 7 in the sleeve 8, and the stop 11 is below the level of the lower plane of the frame 2. The sleeve 8 holds the buckets 4 in the open (inoperative) position.

The first one touches the stop 11 of the latch 10 and under the influence of the mass of the lowering device, the latch 10 moves upward, its smaller diameter is at the level of the balls 7 (as shown in the right projection of the drawing) and the sleeve 8 is able to axially move, displacing the balls 7 to the center of the device. .

After slack appears in the cable suspension 1, which serves as a signal to install the device on the bottom of the reservoir, the cable suspension 1 is pulled slowly. Dirt-mounted * ’buckets 4 raise the sleeve 8 to the upper position, turning on axles 3, and grab the soil. With further tension of the cable suspension 1, a device with a selected sample of soil rises to the surface.

If one of the buckets 4 encounters a solid inclusion 20 during its rotation (for example, a stone, which is a very frequent occurrence in mountain reservoirs), then the movement of part of the flexible link 12 of this bucket is stopped, however, the rise of the leveling block 17 continues when the opposite part of the flexible link 12 is moved , which turns the second bucket, taking a sample of the soil.

Thus, in comparison with the prototype, the number of idle trips on the ground with rocky inclusions of the proposed device is reduced. The exception of their design of the crosshead device allowed to transfer its weight to the r? And with the same load capacity of the mechanism of the service vessel to increase the insertion force on the cutting edges of the digging buckets.

Claims (1)

Claim Device for sampling soil under water, including a frame connected to the base vessel by a rope suspension, made in the form of half-cylinders, two rotary digging buckets with lids rigidly fixed to the frame, a ladle blocking unit, consisting of a hollow rack with spheres installed in the center of symmetry of the frame and the retainer and traverses associated with them, and the flexible links fixed at one end to the soil-bucket, and the second end to the rope suspension, characterized in that, in order to increase the efficiency of the device in operation on soils with solid inclusions and independent operation of the buckets, the flexible links of the soil buckets are connected by the second end to each other, and the rope suspension is equipped with an equalizing block which is encircled by the flexible links of the soil buckets and the crosshead is made in the form of an interlock block placed on a hollow rack bucket bushing.