CN211735572U

CN211735572U - Stone blocking device arranged on lower suction pipe of cutter suction dredger bridge

Info

Publication number: CN211735572U
Application number: CN201922385528.6U
Authority: CN
Inventors: 向征平; 王东方; 夏贺峰; 魏哲; 方涛; 刘华; 徐大双; 方睿; 胡璋平
Original assignee: CHANGJIANG YICHANG WATERWAY ENGINEERING BUREAU
Current assignee: CHANGJIANG YICHANG WATERWAY ENGINEERING BUREAU
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-23
Anticipated expiration: 2029-12-26

Abstract

A stone blocking device arranged on a lower suction pipe of a cutter suction dredger bridge comprises a stone caisson, wherein the stone caisson is arranged on the suction pipe and is communicated with two ends of the suction pipe; the upper end of the caisson is connected with a dredger bridge through a connecting plate; the gravel box is internally provided with a gravel grid net which is transversely arranged in the gravel box to block large sundries passing through the mud suction pipe. The utility model provides a pair of install fender stone device on cutter suction dredger bridge lower suction pipe, reducible cleaning reamer or suction pipe frequency, the construction time is dredged in the extension.

Description

Stone blocking device arranged on lower suction pipe of cutter suction dredger bridge

Technical Field

The utility model relates to a dredger, especially a stone blocking device of installing on cutter suction dredger bridge is on the mud pipe down.

Background

During dredging or hydraulic filling construction, when the cutter suction dredger faces the working conditions that the dredging soil is silt silty clay with strong weathered conglomerates and medium weathered conglomerates and other sundries, the cutter disturbs the dredging soil along with the pump closing, and the mixture of the slurry, the conglomerates, the block stones and the tree piles enters the suction pipe. Therefore, the pipe blockage phenomenon often occurs in construction, and the more sundries such as pebbles, stumps and the like, the more the pipe blockage occurs. During construction, the suction port is cleaned for 1 time per hour on average, the suction port is cleaned for 24 hours per day, the suction port is cleaned for more than 10 hours per day, the suction port is cleaned for each time, a pump is removed, and the suction port and a mud suction pipe in front of an impeller are cleaned, so that the dredging efficiency is greatly reduced, and the benefit of the dredging operation is seriously influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that a keep off stone device of installing on the suction pipe under cutter suction dredger bridge can block debris such as conglomerate, lump stone, stump and continue to follow defeated mud passageway input, avoids suction pipe to take place to block up, guarantees equipment normal operating.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a stone blocking device arranged on a lower suction pipe of a cutter suction dredger bridge comprises a stone caisson, wherein the stone caisson is arranged on the suction pipe and is communicated with two ends of the suction pipe; the upper end of the caisson is connected with a dredger bridge through a connecting plate; the gravel box is internally provided with a gravel grid net which is transversely arranged in the gravel box to block large sundries passing through the mud suction pipe.

The side wall of the lithotriptic box is provided with a cover plate, and the cover plate is locked and fixed through a bolt.

The stone blocking grid net comprises a plurality of galvanized steel bars, and the galvanized steel bars are welded with the inner wall of the stone caisson through steel plates.

The utility model relates to an install fender stone device on dredge pipe under cutter suction dredger bridge has following technological effect: through setting up the detritus case, when debris such as silt silty clay presss from both sides strong morals and manners conglomerate and stroke when the dredge pump work through the mud suction pipe, the stone that the diameter ratio stone grid interval is big is blocked by the stone blocking grid net, stays the detritus bottom of the case. Therefore, large stones cannot enter the impeller, the impeller blade is prevented from being damaged, or the impeller cannot work, and the dredging benefit is influenced during repair. In addition, the debris box can collect the silted up objects, and the debris box needs a certain time to be fully piled up, so that the frequency of cleaning the reamer or the sludge suction pipe is reduced, the dredging construction time is prolonged, and the working efficiency is improved.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic view of the installation structure of the present invention.

Fig. 2 is a schematic main sectional view of the present invention.

Fig. 3 is a schematic cross-sectional view of the present invention.

In the figure: the device comprises a debris box 1, a mud suction pipe 2, a connecting plate 3, a dredger bridge 4, a stone blocking grid net 5 and a cover plate 6.

Detailed Description

As shown in fig. 1, the stone blocking device installed on the suction pipe under the cutter suction dredger bridge comprises a caisson 1, wherein the caisson is formed by welding 6 square steel plates for the ship, which are 4mm thick and 1 × 1m long, into a cube, and the upper end of the caisson 1 is welded with a dredger bridge 4 through a connecting plate 3. The web 3 is a rectangular steel plate for a ship having a thickness of 4mm and a length of 1m 0.3 m. The left and the right of the upper part of the detritus box are provided with 2 mud passing holes with the same pipe diameter as the mud suction pipes, so that the detritus box is smoothly communicated with the mud suction pipes, and the detritus box is welded with the left and the right mud suction pipes 2 at the mud passing holes to form a whole.

Keep away from cutter head one side at the internal portion of detritus case and set up fender stone grid net 5, keep off stone grid net 5 and constitute by 7 20mm galvanized round steel reinforcing bars, 7 reinforcing bar both ends respectively with detritus case upper plate and lower plate welding, adopt 4mm thick triangle-shaped marine steel sheet to be the impact resistance force of welt reinforcing bar and detritus case at steel-bar welding department both ends, the welt adopts welded mode to be connected with reinforcing bar and bottom plate (upper plate or lower plate).

A round hole (the diameter is 450 mm) which is approximately larger than the pipe diameter of the mud suction pipe is arranged on the side of the sinkers close to water, a cover plate 6 is arranged at the round hole, the cover plate 6 is made of a marine steel plate with the thickness of 4mm and the diameter of 700mm, and a 24mm screw rod is adopted to connect the stone drawing cover plate with the sinkers.

The working principle and the process are as follows: the cutter suction dredger is combined with a pump, a reamer head is used for disturbing riverbed soil into slurry, the slurry is conveyed to a sludge discharge pipe through a sludge suction pipe and then conveyed to a designated sludge throwing area for throwing sludge. When the disturbed mud sandwiches impurities such as conglomerates, pebbles, stumps and the like, the impurities are blocked in the device by the stone blocking grid net 5 in the caisson 1 and fall into the bottom of the caisson 1 through self weight; the mud is conveyed to a designated mud throwing area from the mud suction pipe to the mud discharge pipe. When the debris in the caisson 1 is full, the pump is taken off, the reamer head together with the bridge and the bridge lower mud suction pipe are lifted out of the water, the cover plate 6 is opened, and the debris are fished out. Therefore, the frequency of cleaning the suction port can be reduced, the suction port can be cleaned for 1 time in 4 hours on average, and the dredging working efficiency is improved. The defect before the device is not arranged is overcome.

Claims

1. The utility model provides an install fender stone device on dredge pipe under cutter suction dredger bridge which characterized in that: the device comprises a detritus box (1), wherein the detritus box (1) is arranged on a mud suction pipe (2) and is communicated with two ends of the mud suction pipe (2); the upper end of the caisson (1) is connected with a dredger bridge (4) through a connecting plate (3); the gravel-blocking grid net (5) is arranged in the gravel box (1), and the gravel-blocking grid net (5) is transversely arranged in the gravel box (1) to block large sundries passing through the mud suction pipe (2).

2. The stone blocking device installed on the suction pipe under the cutter suction dredger bridge according to claim 1, characterized in that: the side wall of the caisson (1) is provided with a cover plate (6), and the cover plate (6) is locked and fixed through a bolt.

3. The stone blocking device installed on the suction pipe under the cutter suction dredger bridge according to claim 1, characterized in that: the stone blocking grid net (5) comprises a plurality of galvanized steel bars, and the galvanized steel bars are welded with the inner wall of the stone caisson (1) through steel plates.