CN110318437B

CN110318437B - Novel hobbing cutter auxiliary type drag suction dredger harrow head

Info

Publication number: CN110318437B
Application number: CN201910628161.8A
Authority: CN
Inventors: 刘增辉; 司登威; 倪福生; 顾磊; 李洪彬; 蒋爽; 魏长赟
Original assignee: Changzhou Campus of Hohai University
Current assignee: Changzhou Campus of Hohai University
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2021-02-09
Anticipated expiration: 2039-07-12
Also published as: CN110318437A

Abstract

The invention discloses a novel hob-assisted drag suction dredger drag head, which comprises a drag head cover, a reduction box, a first coupling, a second coupling, an underwater motor, a rotating shaft, a hob and drag teeth; the underwater electric machine comprises a speed reduction box, a first coupler, a second coupler and an underwater motor, wherein the speed reduction box, the first coupler, the second coupler and the underwater electric machine are located on the side of a rake head cover, a rotating shaft, a hob and rake teeth are located in the rake head cover, an output shaft of the underwater electric machine is connected with an input shaft of the speed reduction box through the first coupler, an output shaft of the speed reduction box is connected with the rotating shaft through the second coupler, the rotating shaft drives the hob to rotate and cut, the rake teeth are located at the front end. The novel hob is adopted to assist the drag head in rock breaking, the problem that the traditional drag head is insufficient in rock breaking capacity is solved, the rock cutting efficiency of the trailing suction hopper dredger is improved, and the application range of the trailing suction hopper dredger is enlarged.

Description

Novel hobbing cutter auxiliary type drag suction dredger harrow head

Technical Field

The invention relates to a novel hob-assisted drag suction dredger drag head, belonging to the technical field of dredging engineering.

Background

With the rapid development of the shipping industry in China, the capital construction projects such as ports and channels are developed vigorously, so that the demand for dredging ships in China is increasing day by day. The drag suction dredger is the most commonly used dredging ship in the dredging engineering, has strong wind wave resistance, small interference to shipping, large dredging depth and unlimited conveying distance, and is suitable for engineering of sea reclamation, large port channel construction and maintenance and the like in deep water and long-distance operation. With the gradual widening and deepening of ports and channels at home and abroad, the dredging engineering of hard clay, cemented sand and even rock substrate is continuously increased, aiming at rock and soil with the uniaxial saturated compressive strength of more than 20MPa, the drag suction dredger has weak dredging capability, low efficiency and high energy consumption, the application range of the drag suction dredger is limited, and the construction cost of the ports and the channels is increased.

Disclosure of Invention

The invention provides a novel hob-assisted trailing suction dredger drag head, which solves the problem that a conventional trailing suction dredger cannot efficiently dredge harder rock soil with higher strength.

The invention mainly adopts the technical scheme that:

a novel hob-assisted type drag suction dredger drag head comprises a drag head cover, a reduction gearbox, a first coupling, a second coupling, an underwater motor, a rotating shaft, a hob and drag teeth;

the underwater electric machine comprises a speed reduction box, a first coupler, a second coupler and an underwater motor, wherein the speed reduction box, the first coupler, the second coupler and the underwater electric machine are located on the side of a rake head cover, a rotating shaft, a hob and rake teeth are located in the rake head cover, an output shaft of the underwater electric machine is connected with an input shaft of the speed reduction box through the first coupler, an output shaft of the speed reduction box is connected with the rotating shaft through the second coupler, the rotating shaft drives the hob to rotate and cut, the rake teeth are located at the front.

Preferably, the underwater motor, the reduction gearbox, the first coupler and the second coupler are arranged in two groups and are respectively and symmetrically arranged on two side surfaces of the rake head cover, and the two motors are synchronously controlled to jointly drive the rotating shaft to rotate to do work.

Preferably, the reducing gear box includes that input shaft, bevel gear drive are vice, transmission shaft, straight-teeth gear drive are vice, output shaft and reduction box, input shaft, bevel gear drive are vice, transmission shaft, straight-teeth gear drive are vice, the output shaft is located the reduction box, and wherein the output shaft wears out the reduction box, with rotation axis connection, transmission shaft and output shaft are parallel to each other, input shaft and output shaft, transmission shaft mutually perpendicular, the input shaft links with the transmission shaft through a pair of bevel gear drive is vice, realizes the adjustment of direction of transmission, the transmission shaft links with the output shaft through a pair of straight-teeth gear drive, realizes the rotational speed and adjusts.

Preferably, the hob comprises an inner ring base body, a tapered roller bearing, a hob body and blades in sequence from inside to outside, and the blades are uniformly distributed on the periphery of the hob body.

Preferably, the blade is a diamond blade.

The invention achieves the following beneficial effects: the invention provides a novel hob assisted drag suction dredger drag head, wherein a group of novel hobs are arranged in front of drag teeth, and are powered by an underwater motor to cut rocks, destroy the integrity of the rocks, provide a cutting seam free surface for subsequent rock breaking of the drag teeth, reduce the excavating resistance of the drag teeth, improve the excavating efficiency of the drag head, and are suitable for dredging underwater hard rock substrates.

Drawings

FIG. 1 is a schematic diagram of the general structure of the present invention;

FIG. 2 is a schematic right view of the general structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the reduction gearbox;

fig. 4 is a schematic view of a hob construction.

In the figure: the novel rake comprises a rake head cover 1, a reduction gearbox 2, an input shaft 2-1, a bevel gear transmission pair 2-2, a transmission shaft 2-3, a straight gear transmission pair 2-4, an output shaft 2-5, a reduction gearbox body 2-6, a coupling I3, an underwater motor 4, a coupling II 5, a rotating shaft 6, a novel hob 7, an inner ring base body 7-1, a tapered roller bearing 7-2, a cutter body 7-3, blades 7-4 and rake teeth 8.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the following embodiments of the present application are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the invention is further explained in detail by combining the attached drawings:

as shown in fig. 1 and 2, a novel hob-assisted drag suction dredger harrow head mainly comprises a harrow head cover 1, a reduction gearbox 2, a first coupler 3, an underwater motor 4, a second coupler 5, a rotating shaft 6, a hob 7 and harrow teeth 8;

the underwater electric machine is characterized in that the reduction gearbox 2, the first coupling 3, the second coupling 5 and the underwater electric machine 4 are located on the side of the rake head cover 1, the rotating shaft 6, the hob 7 and the rake teeth 8 are located in the rake head cover 1, an output shaft of the underwater electric machine 4 is connected with an input shaft 2-1 of the reduction gearbox 2 through the first coupling 3, the output shaft 2-5 of the reduction gearbox 2 is connected with the rotating shaft 6 through the second coupling 5, the rotating shaft 6 drives the hob 7 to rotate and cut, the rake teeth 8 are located at the front end of the rake head, and the hob 7 is located at the rear end of the rake. The hob 7 is arranged at a certain distance in front of the rake teeth 8, so that interference on a suction port of the rake head is avoided, the hob can cut rock before the rake teeth 8, and a cutting seam free surface is provided for subsequent rock breaking of the rake teeth.

Preferably, the underwater motors 4, the reduction gearbox 2, the first coupler 3 and the second coupler 5 are arranged in two groups and are respectively and symmetrically arranged on two side surfaces of the rake head cover 1, and the two motors are synchronously controlled to jointly drive the rotating shaft 6 to do work.

Preferably, as shown in fig. 3, the reduction gearbox 2 comprises an input shaft 2-1, a bevel gear transmission pair 2-2, a transmission shaft 2-3, a spur gear transmission pair 2-4, an output shaft 2-5 and a reduction gearbox body 2-6, wherein the input shaft 2-1, the bevel gear transmission pair 2-2, the transmission shaft 2-3, the spur gear transmission pair 2-4 and the output shaft 2-5 are positioned in the reduction gearbox body 2-6, the output shaft 2-5 penetrates through the reduction gearbox body 2-6 and is connected with a rotating shaft 6, the transmission shaft 2-3 and the output shaft 2-5 are parallel to each other, the input shaft 2-1, the output shaft 2-5 and the transmission shaft 2-3 are perpendicular to each other and are linked with the transmission shaft 2-3 through a pair of bevel gear transmission pairs 2-2, the adjustment of the transmission direction is realized, and the rotation speed adjustment is realized through the linkage of a pair of straight gear transmission pairs 2-4 and an output shaft 2-5.

Preferably, as shown in fig. 4, the hob 7 comprises an inner ring base body 7-1, a tapered roller bearing 7-2, a hob body 7-3 and a plurality of blades 7-4 in sequence from inside to outside, and the plurality of blades 7-4 are uniformly distributed on the periphery of the hob body 7-3.

The above-mentioned blade 7-4 is preferably a diamond blade.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a hobbing cutter auxiliary type drag suction dredger harrow head which characterized in that: the harrow head comprises a harrow head cover, a reduction gearbox, a first coupler, a second coupler, an underwater motor, a rotating shaft, a hob and harrow teeth;

the underwater electric machine is arranged on the side of the rake head cover, the rotating shaft, the hob and the rake teeth are arranged in the rake head cover, an output shaft of the underwater electric machine is connected with an input shaft of the reduction gearbox through the first coupler, an output shaft of the reduction gearbox is connected with the rotating shaft through the second coupler, the rotating shaft drives the hob to rotate and cut, the rake teeth are arranged at the front end of the rake head, and the hob is arranged at the rear end of the rake teeth;

the reduction gearbox comprises an input shaft, a bevel gear transmission pair, a transmission shaft, a straight gear transmission pair, an output shaft and a reduction box body, wherein the input shaft, the bevel gear transmission pair, the transmission shaft, the straight gear transmission pair and the output shaft are positioned in the reduction box body;

the hob comprises an inner ring base body, a tapered roller bearing, a hob body and blades in sequence from inside to outside, wherein the blades are uniformly distributed on the periphery of the hob body.

2. The drag head of a roller cutter assisted drag suction dredge of claim 1, wherein: the two motors are synchronously controlled to drive the rotating shaft to rotate and do work together.

3. The drag head of a roller cutter assisted drag suction dredge of claim 1, wherein: the blade is a diamond blade.