CN201660915U - Underwater trencher - Google Patents

Abstract

The utility model relates to an underwater trencher, belonging to an auxiliary construction device for laying an undersea flexible pipeline. The underwater trencher comprises a structural part formed by a main body frame 1 and a crow plate 2, a pipeline delivery system formed by a guide groove 3 and pipe pressing wheels, a submersible pump 4, a plowshare 5 and the like. A rolling slide way formed by a plurality of rubber rollers 8 is additionally arranged in the guide groove on each wing of a V-shaped groove. The pipe pressing wheels comprise a front pipe pressing wheel 9 which is arranged at the upper part of the guide groove 3 and is driven by a hydraulic motor 10, and a rear pipe pressing wheel 11 which is arranged at the tail part of the trencher and is connected with an oscillating rod 12, wherein a hydraulic cylinder 13 is additionally arranged between the oscillating rod 12 and the main body frame 1. The submersible pump 4 is horizontally installed and is additionally provided with an outlet elbow. The utility model has the advantages that: 1) the wear caused when the flexible pipeline 15 passes through the guide groove 3 is reduced or avoided; 2) under the drive of the hydraulic motor 10 or the hydraulic cylinder 13, the pipe pressing wheels can effectively control the flexible pipeline 15 in the guide groove 3 and an excavated trench 17; and 3) the overall height of the gravity center of the trencher is effectively reduced and the operation stability of the trencher is improved.

Description

A kind of trenching machine under water

Technical field

The utility model relates to a kind of construction auxiliary equipment that is used to lay submerged pipeline, especially is applicable to the trenching machine under water that flexible pipe lines such as flexible pipe or cable are laid.

Background technology

At present, knownly be used for trenching machine under water that flexible pipe line lays and comprise the structure division formed by the skid plate of main machine frame and its underpart, take turns flexible pipe line induction system and equipment or the parts of forming such as submersible pump and colter by gathering sill and pressure pipe.Trenching machine is connected with the observing and controlling panel with dynamical system on the pipe laying barge by the umbilical cord be made up of power pipeline and observing and controlling pipeline under water.Main machine frame is used to install and fix equipment or parts such as gathering sill, pressure pipe wheel, submersible pump, colter, and lifting hanger and tractive hanger are set on it; Skid plate is the trenching machine grounded part, and its form of structure is convenient to trenching machine and is unlikely to depression in the seabed walking.Gathering sill adopts V-type groove structure, it is the guide channel that flexible pipe line is transferred ground connection, pressure pipe wheel and back pressure pipe were taken turns two groups before pressure pipe wheel was divided into according to the difference of position difference of installing and function, its function be respectively rely on the gravity of pressure pipe wheel self to be controlled at flexible pipe line in the gathering sill and the groove that excavated in.Submersible pump is no less than two, adopts vertical mounting means to be installed on the outer both sides of gathering sill, and its function is that spray is towards submarine soil, formation groove; Colter is installed on the forward position of trenching machine, and its function is to carry out machinery in submersible pump spray before the soil body to break ground, and creates conditions for then spray forms groove towards the soil body.There is following deficiency in above-mentioned trenching machine under water: 1. in the sliding process, there are wearing and tearing in the flexible pipe line rubber topping, make its steel screen layer expose corrosion failure then easily flexible pipe line in gathering sill; 2. because flexible pipe line self flexibility is little, bend radius is bigger, adopt the poor effect of the pressure pipe wheel of gravity principle at present by its deadweight compacting flexible pipe line, 3. submersible pump adopts vertical mounting means to make the whole center of gravity of trenching machine higher, make its in use resistance to capsizing reduce relatively.

Summary of the invention

For the flexible pipe line wearing and tearing that solve existing trenching machine existence, the poor effect of pressure pipe wheel load flexible tube made line, and the whole center of gravity of trenching machine is than problems such as height, the utility model provides a kind of trenching machine under water, this trenching machine is by increasing and decreasing on improvement on the layout, on the principle or the number of components, the flexible pipe line wearing and tearing have been alleviated, improved the effect of compacting flexible pipe line, reduced whole center of gravity, and then improved the performance of trenching machine on the whole.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of trenching machine under water comprises the structure division be made up of the skid plate of main machine frame and its underpart, by pipeline induction system and equipment or parts such as submersible pump and colter that gathering sill and pressure pipe wheel are formed, it is characterized in that respectively setting up the rolling slideway of being made up of the plurality of rubber roller for one along V-type groove both wings in the gathering sill; Pressure pipe wheel and back pressure pipe were taken turns two groups before the pressure pipe wheel comprised, preceding pressure pipe wheel is positioned at gathering sill top, by fluid motor-driven; Back pressure pipe wheel is positioned at the trenching machine afterbody, sets up hydraulic cylinder between the swing arm that is attached thereto and the main body frame and is connected; Submersible pump adopts horizontal mounting means, sets up exit bend, guarantees that hydraulic spray keeps original water outlet direction.When trenching machine is worked under water, flexible pipe line is transferred along the rolling slideway of gathering sill, the common space of forming the restriction flexible pipe line between preceding pressure pipe wheel and two rolling slideways of gathering sill, guaranteed that flexible pipe line can only transfer in gathering sill, the pressure pipe wheel has the effect of carrying flexible pipe line simultaneously under the driving of hydraulic motor.

The beneficial effects of the utility model are: the wearing and tearing that 1) reduce or avoided existing in the process of flexible pipe line by gathering sill; 2) the pressure pipe wheel can effectively be controlled at flexible pipe line in the groove of gathering sill and excavation under the driving of hydraulic motor or hydraulic cylinder; 3) effectively reduce the whole height of C.G. of trenching machine, improved its operating stability.

Description of drawings

Be described further below in conjunction with drawings and Examples.

Fig. 1 is the utility model positive view;

Fig. 2 is the utility model vertical view.

Wherein: the 1-main machine frame; The 2-skid plate; The 3-gathering sill; The 4-submersible pump; The 5-colter; 6-lifts hanger; 7-tractive hanger; The 8-rubber roll; Pressure pipe wheel before the 9-; The 10-hydraulic motor; Pressure pipe wheel behind the 11-; The 12-swing arm; The 13-hydraulic cylinder; The 14-exit bend; The 15-flexible pipe line; The 16-seabed; The 17-groove.

The specific embodiment

As shown in Figure 1, 2, the trenching machine pipeline induction system and equipment or the parts such as submersible pump 4 and colter 5 that comprise the structure division formed by the skid plate 2 of main machine frame 1 and its underpart, form by gathering sill 3 and pressure pipe wheel under water.Trenching machine is connected with the observing and controlling panel with dynamical system on the pipe laying barge by the umbilical cord be made up of power pipeline and observing and controlling pipeline under water.Main machine frame 1 is used to install and fix equipment or parts such as gathering sill 3, pressure pipe wheel, submersible pump 4, colter 5, and lifting hanger 6 and tractive hanger 7 are set on it; Skid plate 2 under the main machine frame 1 is the trenching machine grounded part.Respectively set up the rolling slideway of forming by plurality of rubber roller 8 together along V-type groove both wings in the gathering sill 3, pressure pipe wheel 9 and 11 liang of groups of back pressure pipe wheel before the pressure pipe wheel comprises, preceding pressure pipe wheel 9 is positioned at gathering sill 3 tops, is driven by hydraulic motor 10; Back pressure pipe wheel 11 is positioned at the trenching machine afterbody, sets up hydraulic cylinder 13 between the swing arm 12 that is attached thereto and the main body frame 1 and is connected; Submersible pump 4 adopts horizontal mounting means, sets up exit bend 14, guarantees that hydraulic spray keeps original water outlet direction.

In flexible pipe line 15 laying constructions, pipe laying barge will be under water trenching machine hang entry, transfer to the seabed 16.Pipe laying barge tractive trenching machine under water when moving ahead, is transferred flexible pipe line 15 along the design pipeline trajectory.Behind the colter 5 scarifying soil that are positioned at gathering sill 3 front ends, the High-Pressure Water that submersible pump 4 delivery ports eject big flow destroys the soil body, forms the groove 17 that holds flexible pipe line 15.Flexible pipe line 15 is transferred along the rolling slideway of trenching machine gathering sill 3 under water, the common space of forming restriction flexible pipe line 15 between preceding pressure pipe wheel 9 and 3 two rolling slideways of gathering sill, guaranteed that flexible pipe line 15 can only transfer in gathering sill 3, pressure pipe wheel 9 has the effect of carrying flexible pipe line 15 simultaneously under the driving of hydraulic motor 10.After flexible pipe line 15 enters groove 17, be compressed on groove 17 bottoms by the back pressure pipe wheel 11 under hydraulic cylinder 13 controls.According to the ditching of above scheme trenching machine while advancing, simultaneously flexible pipe line 15 is put into groove 17, finally finish pipelaying work.

Claims (3)

1. One kind under water trenching machine comprise the structure division formed by the skid plate of main machine frame and its underpart, by pipeline induction system and equipment or parts such as submersible pump and colter that gathering sill and pressure pipe wheel are formed, it is characterized in that respectively setting up the rolling slideway of forming by the plurality of rubber roller for one along V-type groove both wings in the gathering sill.
2. 2. according to the trenching machine under water of claim 1, pressure pipe wheel and back pressure pipe were taken turns two groups before said pressure pipe wheel comprised, preceding pressure pipe wheel is positioned at gathering sill top, by fluid motor-driven; Back pressure pipe wheel is positioned at the trenching machine afterbody, sets up hydraulic cylinder between the swing arm that is attached thereto and the main body frame and is connected.
3. 3. according to the trenching machine under water of claim 1, said submersible pump adopts horizontal mounting means, sets up exit bend, guarantees that hydraulic spray keeps original water outlet direction.

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