SU1756468A1 - Dredger - Google Patents

Abstract

Use: subsea development of the soil. SUMMARY OF THE INVENTION: The suction dredger comprises a floating body (1), a capsule (2) installed in it with a mechanism for moving it in a vertical plane and a ground pump (3). The mechanism for moving the capsule (2) is made of the top beam (6) and the bottom beam (7) with a pipe.

Description

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This invention relates to subsea excavation and can be used in hydraulic engineering construction.

The purpose of the invention is to increase the reliability of the suction dredger.

Figure 1 schematically shows a suction dredge, a longitudinal section; figure 2 is the same, the view in the plan.

The dredging projectile includes a floating body 1, a capsule 2 mounted on it, made in the form of a glass, and a ground pump 3 placed in the capsule. The ground pump 3 communicates through the discharge port 4 with the pressure slurry pipe 5. Capsule 2 has the ability to change its position in the vertical plane by means of a vertical movement mechanism, made in the form of a double rod upper beam 6, and a lower beam 7, equipped with a pipe 8, hinges 9 connected to the pressure head pipe 4 soil pump and with

pulp line 5. The upper beam 6 is hingedly connected to the capsule 2 and the floating body 1. The parallel rods of the upper beam 6 are equipped with hydraulic cylinders 10,

On the capsule 2 there is mounted a soil-intake device 11 and a frame-lifting device 12 fixed above it. On the capsule 2 there is also installed technological equipment 13 (technical water supply pump, drainage pump, etc.) serving the ground pump 3.

Suction dredge works as follows.

During the development of the soil, the capsule 2 with the soil pump 3 is lowered down and, depending on the specific local conditions, can be installed at any level within the limits of possible. When transporting the dredge and the capsule 2 is installed in the extreme upper position. Raise and lower capsule 2

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produced by the upper 6 and lower 7 beams by means of hydraulic cylinders 10. The upper beam rods and the lower beam are parallel and equal in length, so the capsule 2 moves parallel to itself and remains always in a vertical position. The intake device 11 is raised and lowered using the frame-lifting device 12, which is mounted on the capsule 2 itself and not on the body of the sump dredger and as usual, which ensures more reliable operation. - The process equipment 13 serving the ground pump 3 is installed however, on the capsule 2, and not on the case, which also increases reliability in operation, since there is no need for long communications and flexible joints at the hinges. Inside the lower beam 7, a pipe 8 is mounted. It is connected to the pressure slurry pipe by the hinges 9, made in the form of ball joints, which is also more reliable than flexible hoses. The introduction of such a dredger yes

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will improve the efficiency of soil development at sites with a great depth of material pulling and will make the work as reliable as possible when using standard ground pumps.

Claims (1)

Invention Formula A suction dredger comprising a floating body, a capsule mounted therein with a mechanism for moving it in a vertical plane, and an earth pump placed in the capsule and communicated through the discharge nozzle with slurry line from. in order to increase the reliability of the suction projectile operation, the mechanism for moving the capsule in a vertical plane is made of an upper beam pivotally connected to the capsule and the floating body with the possibility of rotation in a vertical plane by means of a hydraulic cylinder, and from the lower beam with a pipe, located inside the bottom of the beam and pivotally connected to the pressure pipe of the soil pump and slurry pipe. ten 8 9 Fig m