CN217438759U

CN217438759U - Automatic variable-angle ditching device for high-strength rock

Info

Publication number: CN217438759U
Application number: CN202221146417.5U
Authority: CN
Inventors: 李华军; 张其一
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-09-16
Anticipated expiration: 2032-05-13

Abstract

The utility model belongs to the technical field of the ocean engineering, specifically disclose an automatic variable angle ditching device of high strength rock, the symmetry hangs in the ditching machine frame both sides of cable laying machine, the automatic variable angle ditching device of high strength rock includes the reamer mount and sets up the reamer mechanism in the reamer mount, the reamer mechanism includes the reamer link, the reamer at both ends around the hinge joint is at the reamer link, the reamer that is located the front end rotates through first pivot and installs in the reamer mount, be fixed with rock fragment suction mechanism on the reamer link, there is angle adjustment mechanism between the reamer at both ends and both ends respectively around the rock fragment suction mechanism. The utility model realizes variable-angle excavation, improves the cutting and crushing efficiency of hard rocks, and reduces the ditching operation cost; the suction arm sucks out the rock fragments cut and crushed by the reamer through a rock fragment suction port under the suction action of the dredge pump, so that a high-efficiency stable groove is formed.

Description

Automatic variable-angle ditching device for high-strength rock

Technical Field

The utility model relates to an ocean engineering technology field, especially an automatic variable angle ditching device of high strength rock.

Background

In the process of offshore oil development, the submarine pipeline is buried through the steps of firstly, directly laying on the seabed (naked) and secondly, burying under the seabed with a shallow trench depth; and thirdly, deep. At present, with the continuous improvement of relevant specifications of offshore oil development, offshore oil pipelines are generally buried in a ditch depth range of 3-4 meters at present in China, which provides great challenges for a traditional towed submarine pipeline burying system. Under the influence of the complexity and the nonuniformity of construction geology, the situation that the strength of the seabed soil exceeds the design construction capacity of a trencher is often encountered in the field construction process, and at the moment, a plurality of times of seabed trenching operation is required.

At present, the demand of ditching operation after laying new marine pipes in China is high, a ditcher is the most key machine for ditching and laying submarine pipelines, most of the domestic existing ditchers belong to products rejected abroad or high-price leased foreign equipment, more neck clamping technologies exist in the domestic ditcher in the research and development process, a lot of design difficulties exist, and the working capacity cannot meet the new development demand of the industry. The main core problems are: firstly, the ditching machine has poor soil breaking effect and shallow ditching depth; secondly, the excavation strength is low, the pipe trench is quickly silted up after trenching, the conventional trenching operation needs to be completed by multiple construction, and the trenching efficiency is low due to the multiple construction; the ditching operation speed is slow, and at present, hydraulic jet ditching or mechanical plowshare excavating is generally adopted, and the difficulty of operation in a more complicated sea area is large. At present, ditcher equipment for excavating high-strength rocks is still lacked.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve exist among the prior art not enough, provide an automatic change angle ditching device of high strength rock, fill the blank of internal super dark, high-speed, the high strength excavation rock machine.

In order to achieve the purpose, the utility model is implemented according to the following technical scheme:

the utility model provides an automatic change angle ditching device of high strength rock, the symmetry hangs in the ditching machine frame both sides of pipe cable laying machine, the automatic change angle ditching device of high strength rock includes the reamer mount and sets up the reamer mechanism in the reamer mount, the reamer mechanism includes reamer link, the hinge joint at the reamer at both ends around the reamer link, and the reamer that is located the front end rotates through first pivot and installs in the reamer mount, be fixed with rock fragment suction mechanism on the reamer link, it has angle adjustment mechanism to articulate respectively between the reamer at both ends and both ends around the rock fragment suction mechanism.

Further, the reamer includes reamer support, double gear, chain, hydraulic motor, reduction gear box, angle sensor, torque sensor, reamer support hinged joint both ends around the reamer link, and double gear sets up to a plurality of and rotates and installs on the reamer support, and the chain is installed on a plurality of double gear, the outer terminal surface of chain is equipped with a plurality of reamer teeth, on hydraulic motor, reduction gear box were fixed in the reamer support, hydraulic motor's power output shaft and reduction gear box's power input shaft axial connection still were connected with torque sensor and angle sensor on hydraulic motor's the power output shaft for monitoring hydraulic motor's drive torque and the angle between ditching machine frame and the reamer, the double gear axial fixation of reamer one end was on reduction gear box's power output shaft.

Furthermore, the rock fragment pumping mechanism comprises a rock fragment pumping main body, pumping ports arranged at the bottoms of the two sides of the rock fragment pumping main body, a slurry pump or a silt pump which is connected with the rock fragment pumping main body and is driven by hydraulic pressure, and mud-water separation equipment connected with the slurry pump or the silt pump, wherein the rock fragment pumping main body is fixed on the reamer connecting frame, and pumping arms connected with the pumping ports are fixed on the two sides of the rock fragment pumping main body; the bottom of the rock fragment pumping main body is provided with rake teeth.

Further, angle adjustment mechanism includes first hydraulic push rod and second hydraulic push rod, first hydraulic push rod bottom is rotated through the pivot and is connected in rock fragment suction main part rear end, first hydraulic push rod's ejector pin tip is rotated through the pivot and is connected on the reamer support that is located reamer link rear end, second hydraulic push rod's bottom is rotated through the pivot and is connected in rock fragment suction main part front end, second hydraulic push rod's ejector pin tip is rotated through the pivot and is connected on the reamer support that is located reamer link front end, first hydraulic push rod and second hydraulic push rod change reamer cutting angle according to the drive torque and the turned angle of the hydraulic motor who monitors.

Further, the rake tooth tips are arranged obliquely downward toward the reamer holder.

Compared with the prior art, the utility model discloses can be according to rock strength, can adjust hydraulic motor, the rotational speed and the moment of torsion of double gear, and can adjust the turned angle of anterior segment reamer and the turned angle of back end reamer, variable angle excavation has been realized, in addition, according to the cutting angle of the last reamer tooth of hydraulic motor torque adjustment chain, the cutting crushing efficiency of hard rock has been improved, the ditching operation cost is reduced, suction arm is under dredge pump suction effect, the rock fragment that cuts the reamer down, suck away through rock fragment suction opening, thereby form high-efficient stable slot.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an axial view of the reamer mechanism of the present invention.

Fig. 3 is a front view of the reamer mechanism of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

As shown in fig. 1-3, an automatic variable angle ditching device of high strength rock, the symmetry hangs in the ditching machine frame both sides of pipe cable laying machine, the automatic variable angle ditching device of high strength rock includes reamer mount 1 and sets up the reamer mechanism in reamer mount 1, reamer mechanism includes reamer link 2, the hinge joint reamer 3 at both ends around reamer link 2, and the reamer 3 that is located the front end rotates through first pivot and installs in reamer mount 1, be fixed with rock fragment suction mechanism 4 on reamer link 2, there is angle adjustment mechanism between the reamer 3 at both ends and both ends around rock fragment suction mechanism 4 hinge joint respectively.

Referring to fig. 3, the reamer 3 includes a reamer support 31, two rows of gears 32, a chain 33, a hydraulic motor 35, a reduction gear box, an angle sensor and a torque sensor, the reamer support 31 is hinged at the front and rear ends of the reamer connecting frame 2, the two rows of gears 32 are provided in plurality and rotatably mounted on the reamer support 31, the chain 33 is mounted on the two rows of gears 32, a plurality of reamer teeth 34 are provided on the outer end surface of the chain 33, the hydraulic motor 35 and the reduction gear box are fixed on the reamer support 31, a power output shaft of the hydraulic motor 35 is axially connected with a power input shaft of the reduction gear box, a torque sensor and an angle sensor are further connected to the power output shaft of the hydraulic motor for monitoring the driving torque of the hydraulic motor and the angle between the trencher frame and the reamer, it should be noted that, as shown in fig. 3, the torque sensor and the angle sensor are further connected to the power output shafts of the front and rear hydraulic motors, the torque sensor and the angle sensor are coaxially arranged; the double-row gear at one end of the reamer is axially fixed on a power output shaft of the reduction gear box.

The reamers 3 at the front end and the rear end are connected through the angle adjusting mechanism, in the actual use process, the reamers 3 at the front end and the rear end are driven in real time through the angle adjusting mechanism, variable-angle excavation of the reamers 3 is finally achieved, and cutting and crushing efficiency of hard rocks is improved.

Referring to fig. 1 and 3, the rock fragment pumping mechanism 4 includes a rock fragment pumping main body 41, pumping ports disposed at the bottoms of both sides of the rock fragment pumping main body 41, a slurry pump or a sand pump connected to the rock fragment pumping main body and driven by hydraulic pressure, and a mud-water separating device connected to the slurry pump or the sand pump, wherein the rock fragment pumping main body 41 is fixed to a reamer connecting frame 2, in order to make the connection between the parts more stable, the reamer connecting frame 2 and the rock fragment pumping main body 41 are integrated, suction arms (the actual suction arms are not shown in fig. 3 and are mounted on the openings at the top ends of the rock fragment pumping main body 41 in fig. 3) connected to the pumping ports are fixed to both sides of the rock fragment pumping main body 41, and the two-phase mud-water flow pumped and discharged by the slurry pump or the sand pump is delivered to the mud-water separating device at the rear end through a pipeline, then, the mud-water two-phase flow is effectively separated, the solid mud block downwards buries the pipe cable in the groove, and the separated water body is discharged to the surrounding sea area, so that the pollution problem of the surrounding sea area is effectively reduced; the bottom of the rock fragment suction body 41 is provided with rake teeth 42, as shown in fig. 1 and 2, the ends of the rake teeth 42 are arranged to be inclined downwards towards the reamer holder; the rake tines 42 are used on the one hand to cut the rock at the bottom of the seabed and on the other hand to block large rock fragments and prevent them from blocking the suction opening.

Angle adjustment mechanism includes first hydraulic pressure push rod 5 and second hydraulic pressure push rod 6, 5 bottoms of first hydraulic pressure push rod rotate through the pivot and connect 41 rear ends in rock fragment suction main part, and the ejector pin tip of first hydraulic pressure push rod 5 rotates through the pivot and connects on the reamer support 31 that is located reamer link 2 rear end, and the bottom of second hydraulic pressure push rod 6 rotates through the pivot and connects at 41 front ends in rock fragment suction main part, and the ejector pin tip of second hydraulic pressure push rod 6 rotates through the pivot and connects on the reamer support 31 that is located reamer link 2 front end. The angle adjusting mechanism drives a cutting included angle between the front hinge and the rear hinge by a hydraulic push rod through a torque signal transmitted by the hydraulic motor, and simultaneously adjusts the angle of the reamer for cutting rocks.

Under the action of the second hydraulic push rod 6, the rock fragment suction main body can be driven to rotate along with the front reamer 3, so that the angle of the rake teeth 42 for excavating rocks is changed, and part of rock fragments in the opened groove can be cleaned out of the groove; the rear end of the rock fragment suction main body 41 is connected with the rear end reamer 3 through a chain, and the included angle between the rear end reamer 3 and the suction port can be changed through the drawing motion of the first hydraulic push rod 5, so that part of rock fragments in the groove can be conveniently and quickly drawn away through the rock fragment suction port under the suction effect of the mud pump.

Use the utility model discloses when carrying out the pipe cable shop and burying, concrete operation process as follows:

1. the automatic variable-angle ditching device for the high-strength rock is symmetrically hung on two sides of a ditching machine frame of a pipe cable laying machine, the whole pipe cable laying machine is conveyed to an operation water area by a tugboat, and then the pipe cable laying machine is put down to a specified seabed area by a crane on the boat;

2. when ditching is needed, the pipe cable laying machine lowers the reamer, the reamer rotates under the driving of the hydraulic motor when being lowered, the rotating reamer drives the cutter teeth to cut broken soil, and meanwhile, the rotating angle of the front-section reamer and the rotating angle of the rear-section reamer can be adjusted through the first hydraulic push rod and the second hydraulic push rod, so that efficient and rapid rock cutting is realized, and a groove is formed in a seabed along with the gradual deepening of the cut broken soil;

4. in the process of ditching, the suction arm is under the mud pump suction effect, and the rock fragment that cuts down the reamer is sucked away through rock fragment suction mouth to form high-efficient stable slot.

The utility model realizes variable-angle excavation according to the excavation soil quality intensity (rock and hard soil), improves the cutting and crushing efficiency of the hard rock, and reduces the ditching operation cost; the utility model can effectively adjust the angle between the front reamer and the rear reamer according to the soil quality strength and the ditching depth, thereby realizing the most efficient rock cutting ditching operation; the suction arm sucks out the rock fragments cut and crushed by the reamer through a rock fragment suction port under the suction action of the dredge pump, so that a high-efficiency stable groove is formed; the mud pump pumps the discharged mud-water two-phase flow, the mud-water two-phase flow is conveyed to a mud-water separation device at the rear end through a mud-water pumping pipeline, then the mud-water two-phase flow is effectively separated, a solid mud block downwards buries a pipe cable in the groove, and the separated water body is discharged to the surrounding sea area, so that the pollution problem of the surrounding sea area is effectively reduced; the reamer is driven by a high-rotating-speed low-torque hydraulic motor and a speed reducer, hydraulic power is derived from a hydraulic power source of the ditcher, the hydraulic motor is small in size, large in power-mass ratio and strong in stability and reliability, and meanwhile, the motor brake is not required to be additionally added due to the self-carrying motor brake performance.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. The utility model provides an automatic change angle ditching device of high strength rock, the symmetry hangs in the ditching machine frame both sides of cable laying machine, its characterized in that: the automatic variable angle ditching device of high strength rock includes the reamer mount and sets up the reamer mechanism in the reamer mount, reamer mechanism includes the reamer link, articulates the reamer at both ends around the reamer link, and the reamer that is located the front end rotates through first pivot to be installed in the reamer mount, be fixed with rock fragment suction mechanism on the reamer link, it has angular adjustment mechanism to articulate respectively between the reamer at both ends and both ends around the rock fragment suction mechanism.

2. The automated variable angle trenching apparatus of high strength rock of claim 1 wherein: the reamer includes reamer support, double gear, chain, hydraulic motor, reduction gear, angle sensor, torque sensor, reamer support hinged joint both ends around the reamer link, and double gear sets up to a plurality of and rotates and installs on the reamer support, and the chain is installed on a plurality of double gears, the outer terminal surface of chain is equipped with a plurality of reamer teeth, hydraulic motor, reduction gear are fixed in on the reamer support, and hydraulic motor's power output shaft and reduction gear's power input shaft axial connection still are connected with torque sensor and angle sensor on hydraulic motor's the power output shaft for monitor hydraulic motor's drive torque and the angle between ditching frame and the reamer, the double gear axial fixation of reamer one end is on reduction gear's power output shaft.

3. The automated variable angle trenching apparatus of high strength rock of claim 1 wherein: the rock fragment pumping mechanism comprises a rock fragment pumping main body, pumping ports arranged at the bottoms of the two sides of the rock fragment pumping main body, a hydraulically-driven slurry pump or a silt pump connected with the rock fragment pumping main body, and mud-water separation equipment connected with the slurry pump or the silt pump, wherein the rock fragment pumping main body is fixed on a reamer connecting frame, and pumping arms connected with the pumping ports are fixed on the two sides of the rock fragment pumping main body; the bottom of the rock fragment pumping main body is provided with rake teeth.

4. The automated variable angle trenching apparatus of claim 3 wherein: the angle adjusting mechanism comprises a first hydraulic push rod and a second hydraulic push rod, the bottom of the first hydraulic push rod is connected to the rear end of the rock fragment suction main body in a rotating mode through a rotating shaft, the end portion of an ejector rod of the first hydraulic push rod is connected to a reamer support located at the rear end of the reamer connecting frame in a rotating mode through a rotating shaft, the bottom of the second hydraulic push rod is connected to the front end of the rock fragment suction main body in a rotating mode through a rotating shaft, the end portion of the ejector rod of the second hydraulic push rod is connected to the reamer support located at the front end of the reamer connecting frame in a rotating mode through a rotating shaft, and the first hydraulic push rod and the second hydraulic push rod change the reamer cutting angle according to the driving torque and the rotating angle of a monitored hydraulic motor.

5. The automated variable angle trenching apparatus of claim 3 wherein: the tip of the rake teeth is arranged to slope downwardly towards the reamer mount.