RU1828890C - Soil-suction device of suction-tube dredger - Google Patents

Abstract

The invention is intended for the development of soils in underwater faces and can be used to increase the efficiency of the development of aalun-containing soils by the use of an azrozion erosion by organizing active erosion of the soil around boulders and forcing ejected dead boulders from the suction bones. The invention consists of a suction pipe 2 with suction elements 3. Around nozzle 3 coaxially placed nozzles 4 and 5 are connected by jumpers 6. Tip 3 at the bottom protruding is equipped with an additional fastener 7 made of elastically semicontained in the “hollow torus”. When developing the soil, the tip 7 rests on the soil of the face. The Veda flows to the mouth of the tip explosive through the inter-pipe cavity and erodes the soil that enters the tip 3. When it encounters a boulder, the tip 7 abuts against it, a gap is formed, water is washed through this gap of the boulder side. The boulder slides to the bottom of the overhang. In case of clogging, the mouth of the tip 3 with a boulder includes the hydraulic cylinder 8 and the rod 9, the nozzles 4 and 5 are lowered. The end face of the nozzle 4, the boulder is pushed out of the suction tip. 2 ill. fe 00 ju 00 00 8

Description

The invention relates to construction and is intended for excavation in a flooded face.

The purpose of the invention is to increase the efficiency of erosion erosion development of boulder-containing soils by organizing active erosion around the boulders and forcibly pushing the jammed boulders from the tips.

In FIG. 1 shows a device, a side view; in FIG. 2 — along section AA in FIG. 1.

The device consists of a suction pipe 2 with a tip 3 located on the frame 1. The cross section of each tip 3 is adopted not exceeding the size of the passage section of the soil pump. Each tip 3 is equipped with coaxially arranged nozzles: proximal 4 and remote 5. Both nozzles are mounted for movement along the longitudinal axis of the tip by means of a drive and are interconnected by a rigid radial bridge 6. The mouth of each tip with nozzles has an additional tip 7 made of an elastic-flexible material in the form of a hollow torus, the height of which is assumed to be at least half the size of the passage section of the soil pump. The drive for moving the nozzles is made in the form of a hydraulic cylinder 8 with a rod 9 pivotally mounted on a support 10. The rod 9 is connected by a hinge And connected to a traverse 12 connecting the nozzles of both tips 3. The tips 3 are connected to the suction pipe 2 by means of a manifold 13. Position 14 is indicated hydraulic cylinder feed hoses 8.

Primer suction device is used as follows.

When the soil pump is operating, the soil suction device is brought to the surface of the soil. Lean with an additional tip 7 on the ground for the face. Water from the water rushes to the upper ends of the nozzles 4 and 5, enters the annular gap between the nozzles 4 and 5 (the flow is shown by arrows in Fig. 1), since the water flow from the sides and from the bottom is blocked by an elastic flexible tip 7. The water flow from the gap between the nozzles 4 and 5 falls from top to bottom on the ground and erodes it. This 1 tray acts as a hydraulic baking powder. The washed out soil is carried away into the tip 3 by a stream.

Upon encountering a boulder, the tip 7 abuts against it. When the soil suction device is moved from top to bottom, the tip 7 of an elastic flexible material filled with air is deformed. On the

the boulder area, the portion of the tip 7 is crushed to the entire height of the tip. Gaps are formed around the boulder, along which water flows. With this water, the soil around the boulder is washed away. A boulder falls into a blurred space near it. Moving from top to bottom, the nozzle 7 is again pushed onto the boulder. There is a new erosion of the soil near the house and lower

and the boulder rolls and falls below. This is the erosion and absorption of the overall clods of soil during the gradual lowering of boulders to the bottom of the mine. Some boulders are picked up by the suction stream and delivered to the mouth of the tip 3. Due to the peculiarities of the shape, the boulder with an elongated edge penetrates the tip 3 and gets stuck at its mouth. To clean tip 3

from a crushed boulder, the hydraulic cylinder 8 is activated. The rod 9 extends and moves the nozzles 4 and 5 downward. The pipe 4 abuts the end B against the boulder and pushes it out of the tip 3. The boulder falls to the bottom

working out. The hydraulic cylinder 8 is turned on. The rod 9 moves into the cylinder body. The nozzles 4 and 5 are set to their initial position (Fig. 1). Continue soil development.

Claims (2)

1. The soil suction device of the dredger, including a suction pipe with a tip located on the frame, characterized in that, in order to increase the efficiency of erosion erosion development of boulder-containing soils by organizing active erosion around the boulders and forcibly pushing the stuck out boulders from the tips, each tip equipped with coaxially arranged nozzles mounted for movement along the longitudinal axis of the tip by means of a drive and connected between by means of rigid radial jumpers, and the mouth of each tip with nozzles has an additional tip made of an elastic-flexible material in the form of a hollow end, height which is taken to be equal to at least half the size of the passage section of the soil pump. 2. The device according to claim 1, characterized in that the drive for moving the nozzles it is made in the form of a hydraulic cylinder pivotally attached to the frame, and the jumpers of adjacent tips are interconnected by means of a beam, to which the hydraulic cylinder rod is pivotally attached. Figure 2