CN210421213U - Cutter suction equipment suitable for excavating cohesive soil under deep water condition - Google Patents

Abstract

The utility model discloses a cutter suction device suitable for excavating cohesive soil under deep water conditions, which comprises a soil breaking device and a mud suction device; the ground breaking device comprises a power device and a reamer, the reamer comprises a central rotating shaft and a plurality of reamer blades, and the reamer blades are vertically arranged in a staggered mode on the central rotating shaft. The utility model discloses can be used for the clay environment, improve the construction progress.

Description

Cutter suction equipment suitable for excavating cohesive soil under deep water condition

Technical Field

The utility model relates to a shaft, open caisson construction technical field. More specifically, the utility model relates to a cutter suction device suitable for deep water condition cohesive soil excavates.

Background

The drilling and sucking method is one of the common methods for sinking construction without drainage in vertical well (pipe column) and open caisson, and is characterized by that it adopts the rotary cutter device of cutter-suction machine (submersible drilling machine) to cut and stir the soil body under water, then uses the submersible pump to make the broken soil body implement reverse circulation and discharge it out of open caisson so as to attain the goal of breaking soil and sucking mud. However, when strong plastic clay is encountered, the common six-arm universal reamer head is often coated by the clay to stick a drill, and the cutter arm is blocked, so that the soil breaking and soil taking efficiency is low; in addition, the tool bit adopts dive motor drive more, generally is used for shallow water condition construction, and when the depth of water was darker, the short circuit of easily intaking under the not enough condition of motor leakproofness needs frequent maintenance, influences the construction progress.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of above-mentioned background art, provide a cutter suction equipment suitable for deep water condition cohesive soil excavates.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a cutter suction apparatus adapted for excavation of cohesive soil under deep water conditions, comprising a soil breaking device and a mud suction device; the ground breaking device comprises a power device and a reamer, the reamer comprises a central rotating shaft and a plurality of reamer blades, and the reamer blades are vertically arranged in a staggered mode on the central rotating shaft.

Preferably, the transmission shaft of the power device is connected with the central rotating shaft through a flange, and the hydraulic motor drives the transmission shaft of the power device to rotate.

Preferably, the outer edge of the reamer blade is a cutting edge, a plurality of tooth seats are uniformly distributed on the cutting edge, the distance between every two adjacent tooth seats is 5-10 cm, and cutter teeth are mounted on the tooth seats.

Preferably, the plurality of reamer blades are vertically arranged in a staggered manner on the central rotating shaft, are uniformly arranged at equal angles by taking the central rotating shaft as a circle center, and form an included angle of 10-30 degrees with a horizontal plane.

Preferably, the mud suction device is a gas lift reverse circulation mud suction device, including: a mud suction pipe and an air inlet pipe; the air inlet pipe is connected with an air compressor, the other end of the air inlet pipe is communicated with the lower end of the sludge suction pipe, the upper end of the sludge suction pipe is connected with the sludge discharge pipe through a flange, and a sludge suction port is formed in the lower end of the sludge suction pipe.

Preferably, the mud suction device comprises a hydraulic centrifugal pump and a mud suction pipe, the lower part of the mud suction pipe is connected with the hydraulic centrifugal pump, the upper end of the mud suction pipe is connected with the mud discharge pipe through a flange, and a mud suction port is formed in the bottom of the hydraulic centrifugal pump.

Preferably, the mud suction device is connected with the ground breaking device through the machine body bracket.

Preferably, a cross-shaped grid is arranged at the sludge suction port; the pipe wall of the mud suction pipe, which is positioned at the upper end of the mud suction port, is provided with an opening.

Preferably, the high-pressure water jetting device further comprises:

a water delivery pipe which delivers water to the annular shunt pipe;

the annular shunt pipe is fixed at the upper part of a mud suction port of the mud suction device;

and the plurality of guide pipes are vertically arranged and communicated with the lower part of the annular shunt pipe, and the guide pipes are connected with the high-pressure nozzle.

Preferably, the plurality of guide pipes are connected through reinforcing of a rib plate;

the high-pressure nozzle is an elbow nozzle or a vertical nozzle, and when the high-pressure nozzle is the elbow nozzle, an included angle of 45-90 degrees is formed between the high-pressure nozzle and the axis of the sludge suction port.

The utility model discloses at least, include following beneficial effect:

(1) the utility model discloses a hydraulic motor drive reamer gyration, more be applicable to the open caisson and sink many times and connect the big deep environment of water after the height, compare in ordinary electronic hank and inhale equipment, have better reliability, can cover the open caisson and borrow the overall process that sinks.

(2) The utility model discloses a vertical staggered floor of reamer blade arranges, has increased the area of contact of reamer and the soil body, has avoided six general type reamer blades commonly used and the shortcoming that the cutter tooth is too close to cut cohesive soil and easily sticks up the brill, and the three-layer cutter tooth cuts the soil body repeatedly simultaneously, changes to cut up the clay and stirs into chunky, makes things convenient for underwater pump suction or air suction mud to discharge.

(3) The utility model integrates high-pressure water injection, adopts the shunt tubes with annular structures, realizes that the mud sucking port is circumferentially multi-point dead-angle-free and high-pressure jet breaks the soil, and effectively solves the problem that a large soil body blocks the mud sucking port; meanwhile, the blades of the reamer are washed, so that the cutter teeth are prevented from being stuck by the cohesive soil to a certain degree.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a front view of a cutter suction device (adopting a hydraulic centrifugal pump) suitable for excavating cohesive soil under deep water conditions according to the present invention;

fig. 2 is a front view of the cutter suction device (using the air-lift reverse circulation suction dredge) suitable for excavating the cohesive soil under the deep water condition according to the present invention;

fig. 3 is a front view of a reamer of the cutter suction device suitable for excavating cohesive soil under deep water conditions according to the present invention;

fig. 4 is a top view of a pair of reamer of the cutter suction device suitable for excavating cohesive soil under deep water conditions according to the present invention;

fig. 5 is a front view of the high-pressure water injection device of the cutter suction device suitable for excavating the cohesive soil under the deep water condition.

1. A body support; 2. a mud suction pipe; 3. a sludge discharge pipe; 4. a power plant; 5. a drive shaft; 6. a reamer; 7. a water delivery pipe; 8. a hydraulic oil pipe; 9. a hydraulic centrifugal pump; 10. a high pressure water jet device; 11. a sludge suction port; 12. an air inlet pipe; 13. a flange; 14. a central rotating shaft; 15. a reamer blade; 16. a flange keyway; 17. a tooth holder; 18. cutter teeth; 19. a water inlet; 20. an annular shunt tube; 21. a conduit; 22. a rib plate; 23. a high pressure nozzle.

Detailed Description

The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.

In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1 to 4, the utility model provides a cutter suction device suitable for excavating cohesive soil under deep water conditions, which comprises a soil breaking device and a mud suction device; the soil breaking device comprises a power device 4 and a reamer 6, the reamer 6 comprises a central rotating shaft 14 and a plurality of reamer blades 15, and the reamer blades 15 are vertically arranged in a staggered mode on the central rotating shaft 14. In the embodiment, a pair of soil breaking devices are arranged and are respectively positioned at two sides of the mud suction device.

In another embodiment, for the cutter suction device, the transmission shaft 5 of the power device 4 is connected with the central revolving shaft 14 through the flange key slot 16 on the flange 13, and the hydraulic motor is connected with the power device 4 through the hydraulic oil pipe 8 to drive the transmission shaft 5 to rotate, so that the reamer 6 is driven to revolve.

In another embodiment, for the cutter suction device, the outer edge of the reamer blade 15 is a cutting edge, a plurality of tooth holders 17 are uniformly distributed on the cutting edge, the distance between every two adjacent tooth holders 17 is 5-10 cm, and cutter teeth are mounted on the tooth holders 17, so that different cutter teeth can be replaced according to different geology and used for assisting in cutting cohesive soil, and clay can be more easily cut into small blocks.

In another embodiment, for the cutter suction device, 3 reamer blades 15 are vertically and hierarchically arranged on the central rotating shaft 14, the included angle between the reamer blades 15 is 120 degrees, the included angle between the reamer blade 15 and the horizontal plane is 10-30 degrees, and the contact area between the reamer blades 15 and the soil body can be increased by hierarchically arranging the reamer blades 15.

In another embodiment, as shown in fig. 2, for the cutter suction device, the mud suction device is an air-lift reverse circulation mud suction device, comprising: the sludge suction pipe 2 and the air inlet pipe 12, the air inlet pipe 12 is connected with an air compressor, the other end of the air inlet pipe 12 is communicated with the lower end of the sludge suction pipe 2, the upper end of the sludge suction pipe 2 is connected with the sludge discharge pipe 3 through a flange, and the lower end of the sludge suction pipe is provided with a sludge suction port 11; in this embodiment, the gas lift reverse circulation sludge suction device is suitable for the sludge discharge pipe 3 when the air section is short.

In another embodiment, as shown in fig. 1, for the cutter suction equipment, the mud suction device comprises a hydraulic centrifugal pump 9 and a mud suction pipe 2, the hydraulic centrifugal pump 9 is connected to the lower part of the mud suction pipe 2, the upper end of the mud suction pipe 2 is connected with the mud discharge pipe 3 through a flange, and a mud suction port 11 is arranged at the bottom of the hydraulic centrifugal pump. In the present embodiment, the centrifugal pump 9 is disposed at the lower part of the sludge discharge pipe 3, which is suitable for the long air section of the sludge discharge pipe 3.

In another embodiment, for the cutter suction device, the mud suction device is connected with the ground breaking device through the machine body bracket 1.

In another embodiment, for the cutter suction device, a cross-shaped grid is arranged at the sludge suction port 11 to prevent the sludge suction port 11 from being blocked; the pipe wall of the mud suction pipe at the upper end of the mud suction port 11 is provided with an opening, and when the mud suction port 11 is blocked, the opening can also suck mud.

In another embodiment, as shown in fig. 5, for the cutter suction device, a high pressure water injection device 10 is further included, which includes:

a water delivery pipe 7 which delivers water to the annular shunt pipe 20;

the annular shunt pipe 20 is fixed at the upper part of the mud suction port 11 of the mud suction device, and a water inlet 19 is arranged at the upper part of the annular shunt pipe 20;

and a plurality of guide pipes 21 vertically arranged to communicate with the lower portion of the ring-shaped flow dividing pipe 20, the guide pipes 21 being connected to a high pressure nozzle 23.

In this embodiment, adopt annular structure shunt tubes, realize 11 circumference multiple spot dead angle free high pressure jet of mud suction port and break ground, effectively solve the orificial problem of mud suction port of bold soil mass jam.

In another embodiment, for the cutter suction device, the plurality of guide pipes 21 are connected through reinforcing plates 22;

the high-pressure nozzle 23 is an elbow nozzle or a vertical nozzle, and when the high-pressure nozzle is the elbow nozzle, the included angle of the high-pressure nozzle and the axis of the sludge suction port 11 is 45-90 degrees, so that secondary crushing of large soil at the sludge suction port 11 into slurry is assisted; the vertical nozzles may be used to flush the reamer blades 15.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (10)

1. A cutter suction device suitable for excavating cohesive soil under deep water conditions is characterized by comprising a soil breaking device and a mud suction device; the ground breaking device comprises a power device and a reamer, the reamer comprises a central rotating shaft and a plurality of reamer blades, and the reamer blades are vertically arranged in a staggered mode on the central rotating shaft.

2. The cutter suction device suitable for excavating cohesive soil under deep water conditions as claimed in claim 1, wherein a driving shaft of the power unit is connected to the central rotating shaft through a flange, and the hydraulic motor drives the driving shaft of the power unit to rotate.

3. The cutter suction device suitable for excavating cohesive soil under the deep water condition as claimed in claim 1 or 2, wherein the outer edge of the blade of the cutter is a cutting edge, a plurality of tooth seats are uniformly distributed on the cutting edge, the distance between every two adjacent tooth seats is 5-10 cm, and cutter teeth are mounted on the tooth seats.

4. The cutter suction device suitable for excavating cohesive soil under the deep water condition as claimed in claim 1, wherein a plurality of reamer blades are vertically staggered on the central rotating shaft, are uniformly arranged at equal angles by taking the central rotating shaft as a circle center, and form an included angle of 10-30 degrees with a horizontal plane.

5. The cutter suction device suitable for excavating cohesive soil in deep water conditions as claimed in claim 1, wherein the mud suction device is a gas-lift reverse circulation mud suction device comprising: a mud suction pipe and an air inlet pipe; the air inlet pipe is connected with an air compressor, the other end of the air inlet pipe is communicated with the lower end of the sludge suction pipe, the upper end of the sludge suction pipe is connected with the sludge discharge pipe through a flange, and a sludge suction port is formed in the lower end of the sludge suction pipe.

6. The cutter suction equipment suitable for the excavation of the cohesive soil under the deep water condition as claimed in claim 1, wherein the mud suction device comprises a hydraulic centrifugal pump and a mud suction pipe, the hydraulic centrifugal pump is connected to the lower portion of the mud suction pipe, the upper end of the mud suction pipe is connected with a mud discharge pipe through a flange, and a mud suction port is formed in the bottom of the hydraulic centrifugal pump.

7. A cutter suction device suitable for excavating cohesive soil under deep water conditions as claimed in claim 5 or 6, wherein the mud suction device is connected with the soil breaking device through a machine body bracket.

8. The cutter suction device suitable for excavating cohesive soil under the deep water condition as claimed in claim 5 or 6, wherein a cross-shaped grid is arranged at the sludge suction port; the pipe wall of the mud suction pipe, which is positioned at the upper end of the mud suction port, is provided with an opening.

9. The cutter suction device suitable for excavation of cohesive soil under deep water conditions as claimed in claim 1, further comprising a high-pressure water jet device comprising:

a water delivery pipe which delivers water to the annular shunt pipe;

the annular shunt pipe is fixed at the upper part of a mud suction port of the mud suction device;

and the plurality of guide pipes are vertically arranged and communicated with the lower part of the annular shunt pipe, and the guide pipes are connected with the high-pressure nozzle.

10. The cutter suction device suitable for excavating cohesive soil under the deep water condition according to claim 9, wherein the plurality of guide pipes are connected by reinforcing with a rib plate;

the high-pressure nozzle is an elbow nozzle or a vertical nozzle, and when the high-pressure nozzle is the elbow nozzle, an included angle of 45-90 degrees is formed between the high-pressure nozzle and the axis of the sludge suction port.

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